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Document and Entity Information	6 Months Ended
Document and Entity Information	Jun. 30, 2020 shares
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Entity Registrant Name	SCHLUMBERGER LIMITED/NV
Entity Central Index Key	0000087347
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	1,388,101,743
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity File Number	1-4601
Entity Tax Identification Number	52-0684746
Entity Address, Address Line One	5599 SAN FELIPE
Entity Address, City or Town	HOUSTON
Entity Address, State or Province	TX
Entity Incorporation, State or Country Code	P8
Entity Address, Country	US
Entity Address, Postal Zip Code	77056
City Area Code	713
Local Phone Number	513-2000
Document Quarterly Report	true
Document Transition Report	false
Title of 12(b) Security	common stock, par value $0.01 per share
Security Exchange Name	NYSE
Trading Symbol	SLB

CONSOLIDATED STATEMENT OF INCOME (LOSS) (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue
Total Revenue	$ 5,356	$ 8,269	$ 12,811	$ 16,149
Interest & other income	33	25	72	39
Expenses
Research & engineering	142	179	315	351
General & administrative	81	114	208	225
Impairments & other	3,724		12,247
Interest	144	156	281	302
Income (loss) before taxes	(3,627)	593	(11,716)	1,101
Tax expense (benefit)	(199)	99	(920)	178
Net income (loss)	(3,428)	494	(10,796)	923
Net income attributable to noncontrolling interests	6	2	14	10
Net income (loss) attributable to Schlumberger	$ (3,434)	$ 492	$ (10,810)	$ 913
Basic earnings (loss) per share of Schlumberger	$ (2.47)	$ 0.36	$ (7.79)	$ 0.66
Diluted earnings (loss) per share of Schlumberger	$ (2.47)	$ 0.35	$ (7.79)	$ 0.65
Average shares outstanding:
Basic	1,388	1,384	1,388	1,385
Assuming dilution	1,388	1,395	1,388	1,396
Services
Revenue
Total Revenue	$ 3,721	$ 6,153	$ 9,147	$ 12,059
Expenses
Cost of services and sales	3,383	5,308	8,109	10,422
Product
Revenue
Total Revenue	1,635	2,116	3,664	4,090
Expenses
Cost of services and sales	$ 1,542	$ 1,944	$ 3,439	$ 3,787

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (3,428)	$ 494	$ (10,796)	$ 923
Currency translation adjustments
Unrealized net change arising during the period	19	(37)	(106)	39
Cash flow hedges
Net (loss) gain on cash flow hedges	(28)	1	(231)	(4)
Reclassification to net income (loss) of net realized loss	4	1	5	4
Pension and other postretirement benefit plans
Amortization to net income (loss) of net actuarial loss	37	23	88	47
Amortization to net income (loss) of net prior service credit	8	(3)	3	(6)
Impact of curtailment	(69)		(69)
Income taxes on pension and other postretirement benefit plans	14	(2)	10	(2)
Comprehensive income (loss)	(3,443)	477	(11,096)	1,001
Comprehensive income attributable to noncontrolling interests	6	2	14	10
Comprehensive income (loss) attributable to Schlumberger	$ (3,449)	$ 475	$ (11,110)	$ 991

CONSOLIDATED BALANCE SHEET - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Current Assets
Cash	$ 1,462	$ 1,137
Short-term investments	2,127	1,030
Receivables less allowance for doubtful accounts (2020 - $312; 2019 - $255)	5,808	7,747
Inventories	3,601	4,130
Other current assets	1,381	1,486
Current assets total	14,379	15,530
Investments in Affiliated Companies	1,484	1,565
Fixed Assets less accumulated depreciation	7,729	9,270
Multiclient Seismic Data	356	568
Goodwill	12,954	16,042
Intangible Assets	3,622	7,089
Other Assets	4,143	6,248
Total Assets	44,667	56,312
Current Liabilities
Accounts payable and accrued liabilities	9,824	10,663
Estimated liability for taxes on income	1,054	1,209
Short-term borrowings and current portion of long-term debt	603	524
Dividends payable	184	702
Current Liabilities Total	11,665	13,098
Long-term Debt	16,763	14,770
Postretirement Benefits	905	967
Deferred Taxes	42	491
Other Liabilities	2,836	2,810
Total Liabilities	32,211	32,136
Equity
Common stock	13,044	13,078
Treasury stock	(3,339)	(3,631)
Retained earnings	7,073	18,751
Accumulated other comprehensive loss	(4,738)	(4,438)
Schlumberger stockholders' equity	12,040	23,760
Noncontrolling interests	416	416
Total equity	12,456	24,176
Liabilities and stockholders equity	$ 44,667	$ 56,312

CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts on receivable	$ 312	$ 255

CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) - USD ($)
$ in Millions

6 Months Ended

Jun. 30, 2020

Jun. 30, 2019

Cash flows from operating activities:

Net income (loss)

$ (10,796)

$ 923

Adjustments to reconcile net income (loss) to cash provided by operating activities:

Impairments and other charges

12,247

Depreciation and amortization

^[1]

1,396

1,841

Deferred taxes

(1,050)

(101)

Stock-based compensation expense

213

194

Earnings of equity method investments, less dividends received

(26)

Change in assets and liabilities:

Decrease (increase) in receivables

^[2]

1,910

(581)

Increase in inventories

^[2]

(74)

(332)

Decrease (increase) in other current assets

^[2]

129

(57)

Decrease (increase) in other assets

(16)

Decrease in accounts payable and accrued liabilities

^[2]

(2,204)

(422)

Decrease in estimated liability for taxes on income

(184)

(68)

Decrease in other liabilities

^[2]

(42)

(39)

Other

^[2]

NET CASH PROVIDED BY OPERATING ACTIVITIES

1,587

1,434

Cash flows from investing activities:

Capital expenditures

(658)

(817)

APS investments

(224)

(332)

Multiclient seismic data costs capitalized

(61)

(109)

Business acquisitions and investments, net of cash acquired

(30)

(17)

(Purchase) sale of investments, net

(1,099)

464

Net proceeds from asset divestitures

298

Other

(85)

(63)

NET CASH USED IN INVESTING ACTIVITIES

(1,859)

(874)

Cash flows from financing activities:

Dividends paid

(1,386)

(1,385)

Proceeds from employee stock purchase plan

Proceeds from exercise of stock options

Stock repurchase program

(26)

(199)

Proceeds from issuance of long-term debt

4,985

2,350

Repayment of long-term debt

(3,070)

(1,413)

Net increase (decrease) in short-term borrowings

(22)

Other

(51)

NET CASH PROVIDED BY (USED) IN FINANCING ACTIVITIES

610

(531)

Net increase in cash before translation effect

338

Translation effect on cash

(13)

Cash, beginning of period

1,137

1,433

Cash, end of period

$ 1,462

$ 1,466

[1]	Includes depreciation of property, plant and equipment and amortization of intangible assets, multiclient seismic data costs, and APS investments.
[2]	Net of the effect of business acquisitions and divestitures.

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common Stock Issued	Common Stock In Treasury	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balance at Dec. 31, 2018	$ 36,586	$ 13,132	$ (4,006)	$ 31,658	$ (4,622)	$ 424
Net income (loss)	923			913		10
Currency translation adjustments	39				39
Pension and other postretirement benefit plans	39				39
Shares sold to optionees, less shares exchanged	21	(26)	47
Vesting of restricted stock		(126)	126
Shares issued under employee stock purchase plan	85	(115)	200
Stock repurchase program	(199)		(199)
Stock-based compensation expense	194	194
Dividends declared	(1,385)			(1,385)
Other	(30)	(22)	5			(13)
Balance at Jun. 30, 2019	36,273	13,037	(3,827)	31,186	(4,544)	421
Balance at Mar. 31, 2019	36,524	13,000	(3,756)	31,386	(4,527)	421
Net income (loss)	494			492		2
Currency translation adjustments	(37)				(37)
Changes in fair value of cash flow hedges	2				2
Pension and other postretirement benefit plans	18				18
Shares sold to optionees, less shares exchanged		(1)	1
Vesting of restricted stock		(26)	26
Stock repurchase program	(101)		(101)
Stock-based compensation expense	86	86
Dividends declared	(692)			(692)
Other	(21)	(22)	3			(2)
Balance at Jun. 30, 2019	36,273	13,037	(3,827)	31,186	(4,544)	421
Balance at Dec. 31, 2019	$ 24,176	$ 13,078	$ (3,631)	18,751	(4,438)	416
Balance, shares at Dec. 31, 2019	1,385	1,434
Treasury shares, Balance at Dec. 31, 2019			(49)
Net income (loss)	$ (10,796)			(10,810)		14
Currency translation adjustments	(108)				(106)	(2)
Changes in fair value of cash flow hedges	(226)				(226)
Pension and other postretirement benefit plans	$ 32				32
Vesting of restricted stock		$ (131)	$ 131
Vesting of restricted stock, shares	2		2
Shares issued under employee stock purchase plan	$ 85	(95)	$ 180
Shares issued under employee stock purchase plan, shares	2		2
Stock repurchase program	$ (26)		$ (26)
Stock repurchase program, shares	(1)		(1)
Stock-based compensation expense	$ 213	213
Dividends declared	(868)			(868)
Other	(26)	(21)	$ 7			(12)
Balance at Jun. 30, 2020	$ 12,456	$ 13,044	$ (3,339)	7,073	(4,738)	416
Balance, shares at Jun. 30, 2020	1,388	1,434
Treasury shares, Balance at Jun. 30, 2020			(46)
Balance at Mar. 31, 2020	$ 15,983	$ 12,963	$ (3,360)	10,681	(4,723)	422
Net income (loss)	(3,428)			(3,434)		6
Currency translation adjustments	20				19	1
Changes in fair value of cash flow hedges	(24)				(24)
Pension and other postretirement benefit plans	(10)				(10)
Vesting of restricted stock		(14)	14
Stock-based compensation expense	105	105
Dividends declared	(174)			(174)
Other	(16)	(10)	7			(13)
Balance at Jun. 30, 2020	$ 12,456	$ 13,044	$ (3,339)	$ 7,073	$ (4,738)	$ 416
Balance, shares at Jun. 30, 2020	1,388	1,434
Treasury shares, Balance at Jun. 30, 2020			(46)

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Parenthetical) (Unaudited) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Retained Earnings
Dividends declared, per share	$ 0.125	$ 0.50	$ 0.625	$ 1.00

Basis of Presentation

6 Months Ended

Jun. 30, 2020

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Basis of Presentation

1. Basis of Presentation

The accompanying unaudited consolidated financial statements of Schlumberger Limited and its subsidiaries (“Schlumberger”) have been prepared in accordance with generally accepted accounting principles in the United States of America for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of Schlumberger management, all adjustments considered necessary for a fair statement have been included in the accompanying unaudited financial statements. All intercompany transactions and balances have been eliminated in consolidation. Operating results for the six-month period ended June 30, 2020 are not necessarily indicative of the results that may be expected for the full year ending December 31, 2020. The December 31, 2019 balance sheet information has been derived from the Schlumberger 2019 audited financial statements. For further information, refer to the Consolidated Financial Statements and notes thereto included in the Schlumberger Annual Report on Form 10-K for the year ended December 31, 2019, filed with the Securities and Exchange Commission on January 22, 2020.

Charges and Credits

6 Months Ended

Jun. 30, 2020

Restructuring And Related Activities [Abstract]

Charges and Credits

2. Charges and Credits

Schlumberger recorded the following charges and credits during 2020, all of which are classified in Impairments & other in the Consolidated Statement of Income (Loss):

	(Stated in millions)

	Pretax			Tax			Net
First quarter:
Goodwill	$	3,070		$	-		$	3,070
Intangible asset impairments		3,321			(815	)		2,506
Asset Performance Solutions investments		1,264			4			1,268
North America pressure pumping impairment		587			(133	)		454
Workforce reductions		202			(7	)		195
Other		79			(9	)		70
Valuation allowance		-			164			164
Second quarter:
Workforce reductions		1,021			(71	)		950
Asset Performance Solutions investments		730			(15	)		715
Fixed asset impairments		666			(52	)		614
Inventory write-downs		603			(49	)		554
Right-of-use asset impairments		311			(67	)		244
Costs associated with exiting certain activities		205			25			230
Multiclient seismic data impairment		156			(2	)		154
Repurchase of bonds		40			(2	)		38
Postretirement benefits curtailment gain		(69	)		16			(53	)
Other		61			(4	)		57
	$	12,247		$	(1,017	)	$	11,230

First quarter 2020:

•

Geopolitical events that increased the supply of low-priced oil to the global market occurred at the same time that demand weakened due to the worldwide effects of the COVID-19 pandemic, leading to a collapse in oil prices during March 2020. As a result, Schlumberger’s market capitalization deteriorated significantly compared to the end of 2019. Schlumberger’s stock price reached a low during the first quarter of 2020 not seen since 1995. Additionally, the Philadelphia Oil Services Sector index, which is comprised of companies involved in the oil services sector, reached an all-time low. As a result of these facts, Schlumberger determined that it was more likely than not that the fair value of certain of its reporting units were less than their carrying value. Therefore, Schlumberger performed an interim goodwill impairment test.

Schlumberger had 11 reporting units with goodwill balances aggregating $16.0 billion. Schlumberger determined that the fair value of four of its reporting units, representing $4.5 billion of the goodwill, was substantially in excess of their carrying value. Schlumberger performed a detailed quantitative impairment assessment of the remaining seven reporting units, which represented $11.5 billion of goodwill. As a result of this assessment, Schlumberger concluded that the goodwill associated with each of these seven reporting units was impaired, resulting in a $3.1 billion goodwill impairment charge. This charge primarily relates to goodwill associated with the Drilling and Production segments.

Following the $3.1 billion goodwill impairment charge relating to these seven reporting units, six of these reporting units had a remaining goodwill balance. These six reporting units had goodwill balances which ranged between $0.2 billion and $5.0 billion and aggregated to $8.4 billion as of March 31, 2020.

Schlumberger used the income approach to estimate the fair value of its reporting units, but also considered the market approach to validate the results. The income approach estimates the fair value by discounting each reporting unit’s estimated future cash flows using Schlumberger’s estimate of the discount rate, or expected return, that a marketplace participant would have required as of the valuation date. The market approach includes the use of comparative multiples to corroborate the discounted cash flow results. The market approach involves significant judgement involved in the selection of the appropriate peer group companies and valuation multiples.

Some of the more significant assumptions inherent in the income approach include the estimated future net annual cash flows for each reporting unit and the discount rate. Schlumberger selected the assumptions used in the discounted cash flow projections using historical data supplemented by current and anticipated market conditions and estimated growth rates. Schlumberger’s estimates are based upon assumptions believed to be reasonable. However, given the inherent uncertainty in determining the assumptions underlying a discounted cash flow analysis, particularly in the current volatile market, actual results may differ from those used in Schlumberger’s valuations which could result in additional impairment charges in the future.

The discount rates utilized to value Schlumberger’s reporting units were between 12.0% and 13.5%, depending on the risks and uncertainty inherent in the respective reporting unit as well as the size of the reporting unit. Assuming all other assumptions and inputs used in each of the respective discounted cash flow analysis were held constant, a 50-basis point increase or decrease in the discount rate assumptions would have changed the fair value of the seven reporting units, on average, by less than 5%.

•

The negative market indicators described above were triggering events that indicated that certain of Schlumberger’s long-lived intangible and tangible assets may be impaired. Recoverability testing indicated that certain long-lived assets were impaired. The estimated fair value of these assets was determined to be below their carrying value. As a result, Schlumberger recorded the following impairment charges:

$3.3 billion of intangible assets, of which $2.2 billion relates to Schlumberger’s 2016 acquisition of Cameron International Corporation and $1.1 billion relates to Schlumberger’s 2010 acquisition of Smith International, Inc. Following this impairment charge, the carrying value of the impaired intangible assets was approximately $0.9 billion.

$1.3 billion relating to the carrying value of certain Asset Performance Solutions (“APS”) projects in North America.

$0.6 billion of fixed assets associated with the pressure pumping business in North America.

•

$202 million of severance.

•

$79 million of other restructuring charges, primarily consisting of the impairment of an equity method investment that was determined to be other-than-temporarily impaired.

•

$164 million relating to a valuation allowance against certain deferred tax assets.

Second quarter 2020:

•

As previously noted, late in the first quarter of 2020 geopolitical events that increased the supply of low-priced oil to the global market occurred at the same time as demand weakened due to the worldwide effects of the COVID-19 pandemic, which led to a collapse in oil prices. As a result, the second quarter of 2020 was the most challenging quarter in past decades. Schlumberger responded to these market conditions by taking actions to restructure its business and rationalize its asset base during the second quarter of 2020. These actions included reducing headcount, closing facilities and exiting business lines in certain countries. Additionally, due to the resulting activity decline, Schlumberger had assets that will no longer be utilized. As a consequence of these circumstances and decisions, Schlumberger recorded the following restructuring and asset impairment charges:

$1.021 billion of severance associated with reducing its workforce by more than 21,000 employees. The vast majority of this charge is expected to be paid during the second half of 2020.

$730 million relating to the carrying value of certain APS projects in Latin America.

$666 million of fixed asset impairments primarily relating to equipment that will no longer be utilized and facilities it is exiting.

$603 million write-down of the carrying value of inventory to its net realizable value.

$311 million write-down of right-of-use assets under operating leases associated with leased facilities Schlumberger is exiting and excess equipment.

$205 million of costs associated with exiting certain activities.

$156 million impairment of certain multiclient seismic data.

$61 million of other costs, including a $42 million increase in the allowance for the doubtful accounts.

•

During the second quarter of 2020, Schlumberger repurchased certain Senior Notes (see Note 9 – Long-term debt), which resulted in a $40 million charge.

•

As a consequence of the workforce reductions described above, Schlumberger recorded a curtailment gain of $69 million relating to its US postretirement medical plan. See Note 13 – Pension and Other Postretirement Benefit Plans for further details.

The fair value of the impaired intangible assets, fixed assets, APS investments, right-of-use assets and multiclient seismic data was estimated based on the present value of projected future cash flows that the underlying assets are expected to generate. Such estimates included unobservable inputs that required significant judgement.

As market conditions evolve and Schlumberger continues to develop its strategy to deal with such conditions, it may result in further restructuring and/or impairment charges in future periods relating to, among other things, fixed assets, facilities, workforce reductions and other assets.

There were no charges or credits recorded during the first six months of 2019.

Earnings (Loss) Per Share

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Earnings (Loss) Per Share

3. Earnings (Loss) Per Share

The following is a reconciliation from basic earnings (loss) per share of Schlumberger to diluted earnings (loss) per share of Schlumberger:

(Stated in millions, except per share amounts)

	2020								2019
	Schlumberger Net Loss			Average Shares Outstanding		Loss per Share			Schlumberger Net Income		Average Shares Outstanding		Earnings per Share
Second Quarter
Basic	$	(3,434	)		1,388	$	(2.47	)	$	492		1,384	$	0.36
Unvested restricted stock		-			-					-		11
Diluted	$	(3,434	)		1,388	$	(2.47	)	$	492		1,395	$	0.35


	2020								2019
	Schlumberger Net Loss			Average Shares Outstanding		Loss per Share			Schlumberger Net Income		Average Shares Outstanding		Earnings per Share
Six Months
Basic	$	(10,810	)	$	1,388	$	(7.79	)	$	913	$	1,385	$	0.66
Unvested restricted stock		-			-					-		11
Diluted	$	(10,810	)	$	1,388	$	(7.79	)	$	913	$	1,396	$	0.65

The number of outstanding options to purchase shares of Schlumberger common stock that were not included in the computation of diluted earnings per share, because to do so would have had an antidilutive effect, was as follows:

(Stated in millions)

	Second Quarter			Six Months
	2020	2019		2020	2019
Employee stock options	50	48		50		42
Unvested restricted stock	15		-	15		-

Inventories

6 Months Ended

Jun. 30, 2020

Inventory Disclosure [Abstract]

Inventories

4. Inventories

A summary of inventories, which are stated at the lower of average cost or net realizable value, is as follows:

(Stated in millions)

	Jun. 30,		Dec. 31,
	2020		2019
Raw materials & field materials	$	1,677	$	1,857
Work in progress		481		515
Finished goods		1,443		1,758
	$	3,601	$	4,130

Fixed Assets

6 Months Ended

Jun. 30, 2020

Property Plant And Equipment [Abstract]

Fixed Assets

5. Fixed Assets

A summary of fixed assets follows:

(Stated in millions)

	Jun. 30,		Dec. 31,
	2020		2019
Property, plant & equipment	$	32,737	$	35,009
Less: Accumulated depreciation		25,008		25,739
	$	7,729	$	9,270

Depreciation expense relating to fixed assets was as follows:

(Stated in millions)

	2020		2019
Second Quarter	$	417	$	514
Six Months	$	866	$	1,026

Multiclient Seismic Data

6 Months Ended

Jun. 30, 2020

Multiclient Seismic Data [Abstract]

Multiclient Seismic Data

6. Multiclient Seismic Data

The change in the carrying amount of multiclient seismic data for the six months ended June 30, 2020 was as follows:

(Stated in millions)

Balance at December 31, 2019	$	568
Capitalized in period		61
Charged to expense		(96	)
Impairments (See Note 2)		(156	)
Other		(21	)
Balance at June 30, 2020	$	356

Goodwill

6 Months Ended

Jun. 30, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill

7. Goodwill

The changes in the carrying amount of goodwill by segment were as follows:

	(Stated in millions)

	Reservoir
	Characterization			Drilling			Production			Cameron			Total
Balance at December 31, 2019	$	4,560		$	7,092		$	3,949		$	441		$	16,042
Impairment (See Note 2)		-			(1,659	)		(1,228	)		(183	)		(3,070	)
Impact of changes in exchange rates and other		(3	)		6			(21	)		-			(18	)
Balance at June 30, 2020	$	4,557		$	5,439		$	2,700		$	258		$	12,954

Intangible Assets

6 Months Ended

Jun. 30, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Intangible Assets

8. Intangible Assets

The gross book value, accumulated amortization and net book value of intangible assets were as follows:

	(Stated in millions)

	Jun. 30, 2020						Dec. 31, 2019
	Gross		Accumulated		Net Book		Gross		Accumulated		Net Book
	Book Value		Amortization		Value		Book Value		Amortization		Value
Customer relationships	$	1,751	$	458	$	1,293	$	3,779	$	868	$	2,911
Technology/technical know-how		1,387		538		849		2,498		779		1,719
Tradenames		770		153		617		1,885		264		1,621
Other		1,575		712		863		1,514		676		838
	$	5,483	$	1,861	$	3,622	$	9,676	$	2,587	$	7,089

Amortization expense charged to income was as follows:

(Stated in millions)

	2020		2019
Second Quarter	$	80	$	164
Six Months	$	213	$	324

Based on the net book value of intangible assets at June 30, 2020, amortization charged to income for the subsequent five years is estimated to be: remaining two quarters of 2020—$161 million; 2021—$307 million; 2022—$302 million; 2023—$291 million; 2024—$261 million; and 2025—$254 million.

Long-term Debt

6 Months Ended

Jun. 30, 2020

Debt Disclosure [Abstract]

Long-term Debt

9. Long-term Debt

A summary of Long-term Debt follows:

(Stated in millions)

	Jun. 30,		Dec. 31,
	2020		2019
3.65% Senior Notes due 2023	$	1,495	$	1,495
3.90% Senior Notes due 2028		1,447		1,444
1.375% Guaranteed Notes due 2026		1,119		-
2.00% Guaranteed Notes due 2032		1,119		-
0.25% Notes due 2027		1,008		550
0.50% Notes due 2031		1,008		544
2.40% Senior Notes due 2022		999		998
4.00% Senior Notes due 2025		929		929
2.65% Senior Notes due 2030		892		-
4.30% Senior Notes due 2029		845		845
3.75% Senior Notes due 2024		746		746
1.00% Guaranteed Notes due 2026		671		665
3.30% Senior Notes due 2021		664		1,597
2.65% Senior Notes due 2022		598		598
0.00% Notes due 2024		560		551
3.63% Senior Notes due 2022		295		294
7.00% Notes due 2038		207		208
5.95% Notes due 2041		114		114
5.13% Notes due 2043		99		99
4.00% Notes due 2023		81		81
3.70% Notes due 2024		55		55
4.20% Senior Notes due 2021		-		600
Commercial paper borrowings		1,812		2,222
Other		-		135
	$	16,763	$	14,770

The estimated fair value of Schlumberger’s Long-term Debt, based on quoted market prices at June 30, 2020 and December 31, 2019, was $17.3 billion and $15.3 billion, respectively.

During the second quarter of 2020, Schlumberger entered into a €1.54 billion committed revolving credit facility. This one-year facility can be extended at Schlumberger’s option for up to an additional year. No amounts have been drawn under this facility.

At June 30, 2020, Schlumberger had separate committed credit facility agreements aggregating $7.98 billion with commercial banks, of which $6.17 billion was available and unused. These committed facilities support commercial paper programs in the United States and Europe, of which $1.73 billion matures in April 2021, $2.75 billion matures in February 2023, $1.5 billion matures in July 2024 and $2.0 billion matures in February 2025. Interest rates and other terms of borrowing under these lines of credit vary by facility.

Borrowings under the commercial paper programs at June 30, 2020 were $1.81 billion, all of which was classified in Long-term debt in the Consolidated Balance Sheet. At December 31, 2019, borrowings under the commercial paper programs were $2.22 billion, all of which was classified in Long-term debt in the Consolidated Balance Sheet.

During the first quarter of 2020, Schlumberger issued €400 million of 0.25% Notes due 2027 and €400 million of 0.50% Notes due 2031.

During the second quarter of 2020, Schlumberger issued €1.0 billion of 1.375% Guaranteed Notes due 2026, $900 million of 2.65% Senior Notes due 2030 and €1.0 billion of 2.00% Guaranteed Notes due 2032.

During the second quarter of 2020, Schlumberger repurchased all $600 million of its 4.20% Senior Notes due 2021 and $935 million of its 3.30% Senior Notes due 2021. Schlumberger paid a premium of approximately $40 million in connection with these repurchases. This premium was classified in Impairments & other in the Consolidated Statement of Income (Loss). See Note 2 – Charge and Credits.

During the second quarter of 2020, Schlumberger established a €5.0 billion Guaranteed Euro Medium Term Note program that provides for the issuance of various types of debt instruments such as fixed or floating rate notes in euro, US dollar or other currencies. Schlumberger has not issued any debt under this program.

Derivative Instruments and Hedging Activities

6 Months Ended

Jun. 30, 2020

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities

10. Derivative Instruments and Hedging Activities

Schlumberger is exposed to market risks related to fluctuations in foreign currency exchange rates and interest rates. To mitigate these risks, Schlumberger utilizes derivative instruments. Schlumberger does not enter into derivative transactions for speculative purposes.

Interest Rate Risk

Schlumberger is subject to interest rate risk on its debt and its investment portfolio. Schlumberger maintains an interest rate risk management strategy that uses a mix of variable and fixed rate debt combined with its investment portfolio, to mitigate the exposure to changes in interest rates.

At June 30, 2020, Schlumberger had fixed rate debt aggregating $15.5 billion and variable rate debt aggregating $1.9 billion.

Foreign Currency Exchange Rate Risk

As a multinational company, Schlumberger generates revenue in more than 120 countries. Schlumberger’s functional currency is primarily the US dollar. However, outside the United States, a significant portion of Schlumberger’s expenses are incurred in foreign currencies. Therefore, when the US dollar weakens (strengthens) in relation to the foreign currencies of the countries in which Schlumberger conducts business, the US dollar-reported expenses will increase (decrease).

Schlumberger is exposed to risks on future cash flows to the extent that the local currency is not the functional currency and expenses denominated in local currency are not equal to revenues denominated in local currency. Schlumberger uses foreign currency forward contracts to provide a hedge against a portion of these cash flow risks. These contracts are accounted for as cash flow hedges, with the changes in the fair value of the hedge recorded on the Consolidated Balance Sheet and in Accumulated Other Comprehensive Loss. Amounts recorded in Accumulated Other Comprehensive Loss are reclassified into earnings in the same period or periods that the hedged item is recognized in earnings.

Schlumberger is also exposed to risks on future cash flows relating to certain of its fixed rate debt denominated in currencies other than the functional currency. Schlumberger uses cross-currency swaps to provide a hedge against these cash flow risks.

During 2017, a Canadian-dollar functional currency subsidiary of Schlumberger issued $1.1 billion of US-dollar denominated debt. Schlumberger entered into cross-currency swaps for an aggregate notional amount of $1.1 billion in order to hedge changes in the fair value of its $0.5 billion of 2.20% Senior Notes due 2020 and its $0.6 billion of 2.65% Senior Notes due 2022. These cross-currency swaps effectively convert the US-dollar denominated notes to Canadian-dollar denominated debt with fixed annual interest rates of 1.97% and 2.52%, respectively.

During 2019, a US-dollar functional currency subsidiary of Schlumberger issued €1.5 billion of Euro-denominated debt. Schlumberger entered into cross-currency swaps for an aggregate notional amount of €1.5 billion in order to hedge changes in the fair value of its €0.5 billion 0.00% Notes due 2024, €0.5 billion 0.25% Notes due 2027 and €0.5 billion 0.50% Notes due 2031. These cross-currency swaps effectively convert the Euro-denominated notes to US-dollar denominated debt with fixed annual interest rates of 2.29%, 2.51% and 2.76%, respectively.

During the first quarter of 2020, a US-dollar functional currency subsidiary of Schlumberger issued €0.8 billion of Euro-denominated debt. Schlumberger entered into cross-currency swaps for an aggregate notional amount of €0.8 billion in order to hedge changes in the fair value of its €0.4 billion of 0.25% Notes due 2027 and €0.4 billion of 0.50% Notes due 2031. These cross-currency swaps effectively convert the Euro-denominated notes to US-dollar denominated debt with fixed annual interest rates of 1.87% and 2.20%, respectively.

During the second quarter of 2020, a US-dollar functional currency subsidiary of Schlumberger issued €2.0 billion of Euro-denominated debt. Schlumberger entered into cross-currency swaps for an aggregate notional amount of €1.6 billion in order to hedge changes in the fair value of its €1.0 billion of 1.375% Guaranteed Notes due 2026 and €0.6 billion of 2.00% Guaranteed Notes due 2032. These cross-currency swaps effectively convert the swapped portion of the Euro-denominated notes to US-dollar denominated debt with fixed annual interest rates of 2.77% and 3.45%, respectively. Schlumberger hedged its exposure to currency fluctuations on the remaining €0.4 billion of Euro-denominated debt issued by using foreign currency forward contracts that are not designated as hedges for accounting purposes.

Schlumberger is exposed to changes in the fair value of assets and liabilities that are denominated in currencies other than the functional currency. While Schlumberger uses foreign currency forward contracts and foreign currency options to economically hedge this exposure as it relates to certain currencies, these contracts are not designated as hedges for accounting purposes. Instead, the fair value of the contracts is recorded on the Consolidated Balance Sheet, and changes in the fair value are recognized in the Consolidated Statement of Income (Loss) as are changes in fair value of the hedged item.

At June 30, 2020, contracts were outstanding for the US dollar equivalent of $9.8 billion in various foreign currencies, of which $6.0 billion relates to hedges of debt denominated in currencies other than the functional currency.

At June 30, 2020, Schlumberger recognized a cumulative $260 million loss in Accumulated Other Comprehensive Loss relating to changes in the fair value of foreign currency forward contracts and cross-currency swaps.

The effect of derivative instruments designated as fair value and cash flow hedges, and those not designated as hedges, on the Consolidated Statement of Income (Loss) was as follows:

							(Stated in millions)

	Gain (Loss) Recognized in Income (Loss)
	Second Quarter						Six Months
	2020			2019			2020			2019			Consolidated Statement of Income (Loss) Classification
Derivatives designated as cash flow hedges:
Foreign exchange contracts	$	(4	)	$	(2	)	$	(5	)	$	(4	)	Cost of services/sales
Cross currency swaps		92			(22	)		150			(38	)	Interest expense
	$	88		$	(24	)	$	145		$	(42	)
Derivatives not designated as hedges:
Foreign exchange contracts	$	11		$	(14	)	$	2		$	(8	)	Cost of services/sales

Contingencies

6 Months Ended

Jun. 30, 2020

Commitments And Contingencies Disclosure [Abstract]

Contingencies

11. Contingencies

Schlumberger is party to various legal proceedings from time to time. A liability is accrued when a loss is both probable and can be reasonably estimated. Management believes that the probability of a material loss with respect to any currently pending legal proceeding is remote. However, litigation is inherently uncertain and it is not possible to predict the ultimate disposition of any of these proceedings.

Segment Information

6 Months Ended

Jun. 30, 2020

Segment Reporting [Abstract]

Segment Information

12. Segment Information

				(Stated in millions)

	Second Quarter 2020						Second Quarter 2019
				Income (Loss)						Income (Loss)
				Before						Before
	Revenue			Taxes			Revenue			Taxes
Reservoir Characterization	$	1,052		$	185		$	1,558		$	317
Drilling		1,731			165			2,420			301
Production		1,615			25			3,077			235
Cameron		1,015			80			1,328			165
Eliminations & other		(57	)		(59	)		(114	)		(50	)
					396						968
Corporate & other ⁽¹⁾					(169	)					(238	)
Interest income ⁽²⁾					7						9
Interest expense ⁽³⁾					(137	)					(146	)
Charges and credits ⁽⁴⁾					(3,724	)					-
	$	5,356		$	(3,627	)	$	8,269		$	593

Certain prior period amounts have been reclassified to conform to the current period presentation.

⁽¹⁾	Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets, certain centrally managed initiatives and other nonoperating items.

⁽²⁾	Interest income excludes amounts which are included in the segments’ income ($- million in 2020; $2 million in 2019).

⁽³⁾	^{Interest expense excludes amounts which are included in the segments’ income ($7 million in 2020; $10 million in 2019).}

⁽⁴⁾	^{See Note 2 – Charges and Credits.}

				(Stated in millions)

	Six Months 2020						Six Months 2019
				Income (Loss)						Income (Loss)
				Before						Before
	Revenue			Taxes			Revenue			Taxes
Reservoir Characterization	$	2,363		$	369		$	3,017		$	598
Drilling		4,020			450			4,806			608
Production		4,318			237			5,967			453
Cameron		2,270			201			2,586			313
Eliminations & other		(160	)		(85	)		(227	)		(96	)
					1,172						1,876
Corporate & other ⁽¹⁾					(397	)					(511	)
Interest income ⁽²⁾					22						18
Interest expense ⁽³⁾					(266	)					(282	)
Charges and credits ⁽⁴⁾					(12,247	)					-
	$	12,811		$	(11,716	)	$	16,149		$	1,101

Certain prior period amounts have been reclassified to conform to the current period presentation.

⁽¹⁾	Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets, certain centrally managed initiatives and other nonoperating items.

⁽²⁾	Interest income excludes amounts which are included in the segments’ income ($1 million in 2020; $5 million in 2019).

⁽³⁾	^{Interest expense excludes amounts which are included in the segments’ income ($15 million in 2020; $20 million in 2019).}

⁽⁴⁾	^{See Note 2 – Charges and Credits.}

Revenue by geographic area was as follows:

					(Stated in millions)

	Second Quarter				Six Months
	2020		2019		2020		2019
North America	$	1,183	$	2,801	$	3,463	$	5,539
Latin America		543		1,115		1,488		2,107
Europe/CIS/Africa		1,449		1,896		3,200		3,602
Middle East & Asia		2,146		2,452		4,572		4,790
Eliminations & other		35		5		88		111
	$	5,356	$	8,269	$	12,811	$	16,149

North America and International revenue disaggregated by segment was as follows:

							(Stated in millions)

	Second Quarter 2020
	North						Eliminations
	America			International			& other			Total
Reservoir Characterization	$	165		$	880		$	7		$	1,052
Drilling		269			1,417			45			1,731
Production		408			1,205			2			1,615
Cameron		341			676			(2	)		1,015
Other		-			(40	)		(17	)		(57	)
	$	1,183		$	4,138		$	35		$	5,356


	Second Quarter 2019
	North						Eliminations
	America			International			& other			Total
Reservoir Characterization	$	242		$	1,312		$	4		$	1,558
Drilling		552			1,819			49			2,420
Production		1,419			1,657			1			3,077
Cameron		600			754			(26	)		1,328
Other		(12	)		(79	)		(23	)		(114	)
	$	2,801		$	5,463		$	5		$	8,269

				(Stated in millions)

	Six Months 2020
	North						Eliminations
	America			International			& other			Total
Reservoir Characterization	$	365		$	1,988		$	10		$	2,363
Drilling		792			3,139			89			4,020
Production		1,475			2,842			1			4,318
Cameron		847			1,402			21			2,270
Other		(16	)		(111	)		(33	)		(160	)
	$	3,463		$	9,260		$	88		$	12,811


	Six Months 2019
	North						Eliminations
	America			International			& other			Total
Reservoir Characterization	$	458		$	2,552		$	7		$	3,017
Drilling		1,128			3,574			104			4,806
Production		2,792			3,173			2			5,967
Cameron		1,182			1,375			29			2,586
Other		(21	)		(175	)		(31	)		(227	)
	$	5,539		$	10,499		$	111		$	16,149

Revenue in excess of billings related to contracts where revenue is recognized over time was $0.2 billion at both June 30, 2020 and December 31, 2019. Such amounts are included within Receivables less allowance for doubtful accounts in the Consolidated Balance Sheet.

Due to the nature of its business, Schlumberger does not have significant backlog. Total backlog was $2.8 billion at June 30, 2020, of which approximately 50% is expected to be recognized as revenue over the next 12 months.

Billings and cash collections in excess of revenue was $1.1 billion at June 30, 2020 and $0.9 billion at December 31, 2019. Such amounts are included within Accounts payable and accrued liabilities in the Consolidated Balance Sheet.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

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+ Details

Pension and Other Postretirement Benefit Plans

6 Months Ended

Jun. 30, 2020

Compensation And Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefit Plans

13. Pension and Other Postretirement Benefit Plans

Net pension cost (credit) for the Schlumberger pension plans included the following components:

(Stated in millions)

	Second Quarter												Six Months
	2020						2019						2020						2019
	US			Int'l			US			Int'l			US			Int'l			US			Int'l
Service cost	$	16		$	37		$	13		$	32		$	31		$	74		$	27		$	64
Interest cost		38			75			46			83			75			150			91			166
Expected return on plan assets		(59	)		(147	)		(57	)		(148	)		(117	)		(294	)		(115	)		(298	)
Amortization of prior service cost		2			-			2			2			4			-			4			4
Amortization of net loss		11			39			8			15			22			79			16			31
	$	8		$	4		$	12		$	(16	)	$	15		$	9		$	23		$	(33	)

The net periodic benefit credit for the Schlumberger US postretirement medical plan included the following components:

(Stated in millions)

	Second Quarter						Six Months
	2020			2019			2020			2019
Service cost	$	9		$	7		$	18		$	15
Interest cost		10			12			20			24
Expected return on plan assets		(17	)		(17	)		(34	)		(33	)
Amortization of prior service credit		(7	)		(7	)		(14	)		(14	)
Curtailment gain		(69	)		-			(69	)		-
	$	(74	)	$	(5	)	$	(79	)	$	(8	)

- Definition

The entire disclosure for retirement benefits.

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-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

+ Details

Charges and Credits (Tables)

6 Months Ended

Jun. 30, 2020

Restructuring And Related Activities [Abstract]

Summary of Charges and Credits

Schlumberger recorded the following charges and credits during 2020, all of which are classified in Impairments & other in the Consolidated Statement of Income (Loss):

	(Stated in millions)

	Pretax			Tax			Net
First quarter:
Goodwill	$	3,070		$	-		$	3,070
Intangible asset impairments		3,321			(815	)		2,506
Asset Performance Solutions investments		1,264			4			1,268
North America pressure pumping impairment		587			(133	)		454
Workforce reductions		202			(7	)		195
Other		79			(9	)		70
Valuation allowance		-			164			164
Second quarter:
Workforce reductions		1,021			(71	)		950
Asset Performance Solutions investments		730			(15	)		715
Fixed asset impairments		666			(52	)		614
Inventory write-downs		603			(49	)		554
Right-of-use asset impairments		311			(67	)		244
Costs associated with exiting certain activities		205			25			230
Multiclient seismic data impairment		156			(2	)		154
Repurchase of bonds		40			(2	)		38
Postretirement benefits curtailment gain		(69	)		16			(53	)
Other		61			(4	)		57
	$	12,247		$	(1,017	)	$	11,230

Earnings (Loss) Per Share (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Reconciliation of Earnings (loss) Per Share

The following is a reconciliation from basic earnings (loss) per share of Schlumberger to diluted earnings (loss) per share of Schlumberger:

(Stated in millions, except per share amounts)

	2020								2019
	Schlumberger Net Loss			Average Shares Outstanding		Loss per Share			Schlumberger Net Income		Average Shares Outstanding		Earnings per Share
Second Quarter
Basic	$	(3,434	)		1,388	$	(2.47	)	$	492		1,384	$	0.36
Unvested restricted stock		-			-					-		11
Diluted	$	(3,434	)		1,388	$	(2.47	)	$	492		1,395	$	0.35


	2020								2019
	Schlumberger Net Loss			Average Shares Outstanding		Loss per Share			Schlumberger Net Income		Average Shares Outstanding		Earnings per Share
Six Months
Basic	$	(10,810	)	$	1,388	$	(7.79	)	$	913	$	1,385	$	0.66
Unvested restricted stock		-			-					-		11
Diluted	$	(10,810	)	$	1,388	$	(7.79	)	$	913	$	1,396	$	0.65

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

(Stated in millions)

	Second Quarter			Six Months
	2020	2019		2020	2019
Employee stock options	50	48		50		42
Unvested restricted stock	15		-	15		-

Inventories (Tables)

6 Months Ended

Jun. 30, 2020

Inventory Disclosure [Abstract]

Summary of Inventory

A summary of inventories, which are stated at the lower of average cost or net realizable value, is as follows:

(Stated in millions)

	Jun. 30,		Dec. 31,
	2020		2019
Raw materials & field materials	$	1,677	$	1,857
Work in progress		481		515
Finished goods		1,443		1,758
	$	3,601	$	4,130

Fixed Assets (Tables)

6 Months Ended

Jun. 30, 2020

Property Plant And Equipment [Abstract]

Summary of Fixed Assets

A summary of fixed assets follows:

(Stated in millions)

	Jun. 30,		Dec. 31,
	2020		2019
Property, plant & equipment	$	32,737	$	35,009
Less: Accumulated depreciation		25,008		25,739
	$	7,729	$	9,270

Depreciation Expense Relating to Fixed Assets

Depreciation expense relating to fixed assets was as follows:

(Stated in millions)

	2020		2019
Second Quarter	$	417	$	514
Six Months	$	866	$	1,026

Multiclient Seismic Data (Tables)

6 Months Ended

Jun. 30, 2020

Multiclient Seismic Data [Abstract]

Change in Carrying Amount of Multiclient Seismic Data

The change in the carrying amount of multiclient seismic data for the six months ended June 30, 2020 was as follows:

(Stated in millions)

Balance at December 31, 2019	$	568
Capitalized in period		61
Charged to expense		(96	)
Impairments (See Note 2)		(156	)
Other		(21	)
Balance at June 30, 2020	$	356

Goodwill (Tables)

6 Months Ended

Jun. 30, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill by segment were as follows:

	(Stated in millions)

	Reservoir
	Characterization			Drilling			Production			Cameron			Total
Balance at December 31, 2019	$	4,560		$	7,092		$	3,949		$	441		$	16,042
Impairment (See Note 2)		-			(1,659	)		(1,228	)		(183	)		(3,070	)
Impact of changes in exchange rates and other		(3	)		6			(21	)		-			(18	)
Balance at June 30, 2020	$	4,557		$	5,439		$	2,700		$	258		$	12,954

Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets by Major Class

The gross book value, accumulated amortization and net book value of intangible assets were as follows:

	(Stated in millions)

	Jun. 30, 2020						Dec. 31, 2019
	Gross		Accumulated		Net Book		Gross		Accumulated		Net Book
	Book Value		Amortization		Value		Book Value		Amortization		Value
Customer relationships	$	1,751	$	458	$	1,293	$	3,779	$	868	$	2,911
Technology/technical know-how		1,387		538		849		2,498		779		1,719
Tradenames		770		153		617		1,885		264		1,621
Other		1,575		712		863		1,514		676		838
	$	5,483	$	1,861	$	3,622	$	9,676	$	2,587	$	7,089

Amortization Expense Charged to Income for Intangible Assets

(Stated in millions)

	2020		2019
Second Quarter	$	80	$	164
Six Months	$	213	$	324

Long-term Debt (Tables)

6 Months Ended

Jun. 30, 2020

Debt Disclosure [Abstract]

Summary of Long-term Debt

A summary of Long-term Debt follows:

(Stated in millions)

	Jun. 30,		Dec. 31,
	2020		2019
3.65% Senior Notes due 2023	$	1,495	$	1,495
3.90% Senior Notes due 2028		1,447		1,444
1.375% Guaranteed Notes due 2026		1,119		-
2.00% Guaranteed Notes due 2032		1,119		-
0.25% Notes due 2027		1,008		550
0.50% Notes due 2031		1,008		544
2.40% Senior Notes due 2022		999		998
4.00% Senior Notes due 2025		929		929
2.65% Senior Notes due 2030		892		-
4.30% Senior Notes due 2029		845		845
3.75% Senior Notes due 2024		746		746
1.00% Guaranteed Notes due 2026		671		665
3.30% Senior Notes due 2021		664		1,597
2.65% Senior Notes due 2022		598		598
0.00% Notes due 2024		560		551
3.63% Senior Notes due 2022		295		294
7.00% Notes due 2038		207		208
5.95% Notes due 2041		114		114
5.13% Notes due 2043		99		99
4.00% Notes due 2023		81		81
3.70% Notes due 2024		55		55
4.20% Senior Notes due 2021		-		600
Commercial paper borrowings		1,812		2,222
Other		-		135
	$	16,763	$	14,770

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28541-108399

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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-Paragraph 2
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Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 10
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-Paragraph 8
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Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

Derivative Instruments and Hedging Activities (Tables)

6 Months Ended

Jun. 30, 2020

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Effect of Derivative Instruments Designated as Fair Value and Cash Flow Hedges and Not Designated as Hedges on Consolidated Statement of (Loss) Income

The effect of derivative instruments designated as fair value and cash flow hedges, and those not designated as hedges, on the Consolidated Statement of Income (Loss) was as follows:

							(Stated in millions)

	Gain (Loss) Recognized in Income (Loss)
	Second Quarter						Six Months
	2020			2019			2020			2019			Consolidated Statement of Income (Loss) Classification
Derivatives designated as cash flow hedges:
Foreign exchange contracts	$	(4	)	$	(2	)	$	(5	)	$	(4	)	Cost of services/sales
Cross currency swaps		92			(22	)		150			(38	)	Interest expense
	$	88		$	(24	)	$	145		$	(42	)
Derivatives not designated as hedges:
Foreign exchange contracts	$	11		$	(14	)	$	2		$	(8	)	Cost of services/sales

Segment Information (Tables)

6 Months Ended

Jun. 30, 2020

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

				(Stated in millions)

	Second Quarter 2020						Second Quarter 2019
				Income (Loss)						Income (Loss)
				Before						Before
	Revenue			Taxes			Revenue			Taxes
Reservoir Characterization	$	1,052		$	185		$	1,558		$	317
Drilling		1,731			165			2,420			301
Production		1,615			25			3,077			235
Cameron		1,015			80			1,328			165
Eliminations & other		(57	)		(59	)		(114	)		(50	)
					396						968
Corporate & other ⁽¹⁾					(169	)					(238	)
Interest income ⁽²⁾					7						9
Interest expense ⁽³⁾					(137	)					(146	)
Charges and credits ⁽⁴⁾					(3,724	)					-
	$	5,356		$	(3,627	)	$	8,269		$	593

Certain prior period amounts have been reclassified to conform to the current period presentation.

⁽¹⁾	Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets, certain centrally managed initiatives and other nonoperating items.

⁽²⁾	Interest income excludes amounts which are included in the segments’ income ($- million in 2020; $2 million in 2019).

⁽³⁾	^{Interest expense excludes amounts which are included in the segments’ income ($7 million in 2020; $10 million in 2019).}

⁽⁴⁾	^{See Note 2 – Charges and Credits.}

				(Stated in millions)

	Six Months 2020						Six Months 2019
				Income (Loss)						Income (Loss)
				Before						Before
	Revenue			Taxes			Revenue			Taxes
Reservoir Characterization	$	2,363		$	369		$	3,017		$	598
Drilling		4,020			450			4,806			608
Production		4,318			237			5,967			453
Cameron		2,270			201			2,586			313
Eliminations & other		(160	)		(85	)		(227	)		(96	)
					1,172						1,876
Corporate & other ⁽¹⁾					(397	)					(511	)
Interest income ⁽²⁾					22						18
Interest expense ⁽³⁾					(266	)					(282	)
Charges and credits ⁽⁴⁾					(12,247	)					-
	$	12,811		$	(11,716	)	$	16,149		$	1,101

Certain prior period amounts have been reclassified to conform to the current period presentation.

⁽¹⁾	Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets, certain centrally managed initiatives and other nonoperating items.

⁽²⁾	Interest income excludes amounts which are included in the segments’ income ($1 million in 2020; $5 million in 2019).

⁽³⁾	^{Interest expense excludes amounts which are included in the segments’ income ($15 million in 2020; $20 million in 2019).}

⁽⁴⁾	^{See Note 2 – Charges and Credits.}

Revenue by Geographic Area

Revenue by geographic area was as follows:

					(Stated in millions)

	Second Quarter				Six Months
	2020		2019		2020		2019
North America	$	1,183	$	2,801	$	3,463	$	5,539
Latin America		543		1,115		1,488		2,107
Europe/CIS/Africa		1,449		1,896		3,200		3,602
Middle East & Asia		2,146		2,452		4,572		4,790
Eliminations & other		35		5		88		111
	$	5,356	$	8,269	$	12,811	$	16,149

Summary of North America and International Revenue Disaggregated by Segment

North America and International revenue disaggregated by segment was as follows:

							(Stated in millions)

	Second Quarter 2020
	North						Eliminations
	America			International			& other			Total
Reservoir Characterization	$	165		$	880		$	7		$	1,052
Drilling		269			1,417			45			1,731
Production		408			1,205			2			1,615
Cameron		341			676			(2	)		1,015
Other		-			(40	)		(17	)		(57	)
	$	1,183		$	4,138		$	35		$	5,356


	Second Quarter 2019
	North						Eliminations
	America			International			& other			Total
Reservoir Characterization	$	242		$	1,312		$	4		$	1,558
Drilling		552			1,819			49			2,420
Production		1,419			1,657			1			3,077
Cameron		600			754			(26	)		1,328
Other		(12	)		(79	)		(23	)		(114	)
	$	2,801		$	5,463		$	5		$	8,269

				(Stated in millions)

	Six Months 2020
	North						Eliminations
	America			International			& other			Total
Reservoir Characterization	$	365		$	1,988		$	10		$	2,363
Drilling		792			3,139			89			4,020
Production		1,475			2,842			1			4,318
Cameron		847			1,402			21			2,270
Other		(16	)		(111	)		(33	)		(160	)
	$	3,463		$	9,260		$	88		$	12,811


	Six Months 2019
	North						Eliminations
	America			International			& other			Total
Reservoir Characterization	$	458		$	2,552		$	7		$	3,017
Drilling		1,128			3,574			104			4,806
Production		2,792			3,173			2			5,967
Cameron		1,182			1,375			29			2,586
Other		(21	)		(175	)		(31	)		(227	)
	$	5,539		$	10,499		$	111		$	16,149

Pension and Other Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2020

Compensation And Retirement Disclosure [Abstract]

Net Pension Cost (Credit) for Schlumberger Pension Plans and US Postretirement Medical Plan

Net pension cost (credit) for the Schlumberger pension plans included the following components:

(Stated in millions)

	Second Quarter												Six Months
	2020						2019						2020						2019
	US			Int'l			US			Int'l			US			Int'l			US			Int'l
Service cost	$	16		$	37		$	13		$	32		$	31		$	74		$	27		$	64
Interest cost		38			75			46			83			75			150			91			166
Expected return on plan assets		(59	)		(147	)		(57	)		(148	)		(117	)		(294	)		(115	)		(298	)
Amortization of prior service cost		2			-			2			2			4			-			4			4
Amortization of net loss		11			39			8			15			22			79			16			31
	$	8		$	4		$	12		$	(16	)	$	15		$	9		$	23		$	(33	)

The net periodic benefit credit for the Schlumberger US postretirement medical plan included the following components:

(Stated in millions)

	Second Quarter						Six Months
	2020			2019			2020			2019
Service cost	$	9		$	7		$	18		$	15
Interest cost		10			12			20			24
Expected return on plan assets		(17	)		(17	)		(34	)		(33	)
Amortization of prior service credit		(7	)		(7	)		(14	)		(14	)
Curtailment gain		(69	)		-			(69	)		-
	$	(74	)	$	(5	)	$	(79	)	$	(8	)

Charges and Credits - Summary of Charges and Credits (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Jun. 30, 2019
Charges And Credits [Line Items]
Charges and credits, Net				$ 0
Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax			$ 12,247,000,000
Charges and credits, Tax			(1,017,000,000)
Charges and credits, Net			$ 11,230,000,000
Goodwill \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax		$ 3,070,000,000
Charges and credits, Net		3,070,000,000
Intangible assets impairment \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax		3,321,000,000
Charges and credits, Tax		(815,000,000)
Charges and credits, Net		2,506,000,000
Asset Performance Solutions Investments \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	$ 730,000,000	1,264,000,000
Charges and credits, Tax	(15,000,000)	4,000,000
Charges and credits, Net	715,000,000	1,268,000,000
North America pressure pumping asset impairments \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax		587,000,000
Charges and credits, Tax		(133,000,000)
Charges and credits, Net		454,000,000
Workforce reductions \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	1,021,000,000	202,000,000
Charges and credits, Tax	(71,000,000)	(7,000,000)
Charges and credits, Net	950,000,000	195,000,000
Other \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	61,000,000	79,000,000
Charges and credits, Tax	(4,000,000)	(9,000,000)
Charges and credits, Net	57,000,000	70,000,000
Valuation allowance \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Tax		164,000,000
Charges and credits, Net		$ 164,000,000
Fixed Asset Impairments \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	666,000,000
Charges and credits, Tax	(52,000,000)
Charges and credits, Net	614,000,000
Inventory Write Down \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	603,000,000
Charges and credits, Tax	(49,000,000)
Charges and credits, Net	554,000,000
Right-of-use Asset Impairments \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	311,000,000
Charges and credits, Tax	(67,000,000)
Charges and credits, Net	244,000,000
Costs Associated With Exiting Certain Activities \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	205,000,000
Charges and credits, Tax	25,000,000
Charges and credits, Net	230,000,000
Multiclient Seismic Data Impairment \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	156,000,000
Charges and credits, Tax	(2,000,000)
Charges and credits, Net	154,000,000
Repurchase of bonds \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	40,000,000
Charges and credits, Tax	(2,000,000)
Charges and credits, Net	38,000,000
Postretirement Benefits Curtailment Gain \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	(69,000,000)
Charges and credits, Tax	16,000,000
Charges and credits, Net	$ (53,000,000)

Charges and Credits - Additional Information (Detail)	3 Months Ended		6 Months Ended
Charges and Credits - Additional Information (Detail)	Jun. 30, 2020 USD ($) Emp	Mar. 31, 2020 USD ($) Unit	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Charges And Credits [Line Items]
Total number of reporting units \| Unit		11
Goodwill		$ 16,000,000,000.0
Goodwill impairment charge		$ 3,100,000,000
Goodwill	$ 12,954,000,000			$ 16,042,000,000
Expected increase/decrease in discount rate assumption		0.50%
Number of reporting units fair value to be impacted \| Unit		7
Intangible assets		$ 3,300,000,000
Charges And Credits			$ 0
Carrying Value Of Impaired Intangible Asset
Charges And Credits [Line Items]
Intangible assets		900,000,000
Carrying Value Of Asset Production Solutions \| North America
Charges And Credits [Line Items]
Intangible assets		1,300,000,000
North America pressure pumping asset impairments \| North America
Charges And Credits [Line Items]
Intangible assets		600,000,000
Severance
Charges And Credits [Line Items]
Intangible assets	202,000,000
Other Restructuring
Charges And Credits [Line Items]
Intangible assets		79,000,000
Valuation allowance \| North America
Charges And Credits [Line Items]
Intangible assets		164,000,000
Workforce reductions
Charges And Credits [Line Items]
Restructuring and asset impairment charges	$ 1,021,000,000.000
Reduction in workforce \| Emp	21,000
Asset Performance Solutions Investments \| Latin America
Charges And Credits [Line Items]
Restructuring and asset impairment charges	$ 730,000,000
Fixed Asset Impairments
Charges And Credits [Line Items]
Restructuring and asset impairment charges	666,000,000
Inventory Write Down
Charges And Credits [Line Items]
Restructuring and asset impairment charges	603,000,000
Right-of-use Asset Impairments
Charges And Credits [Line Items]
Restructuring and asset impairment charges	311,000,000
Costs Associated With Exiting Certain Activities
Charges And Credits [Line Items]
Restructuring and asset impairment charges	205,000,000
Multiclient Seismic Data Impairment
Charges And Credits [Line Items]
Restructuring and asset impairment charges	156,000,000
Other
Charges And Credits [Line Items]
Restructuring and asset impairment charges	61,000,000
Allowance For Doubtful Accounts
Charges And Credits [Line Items]
Restructuring and asset impairment charges	42,000,000
Repurchase of bonds
Charges And Credits [Line Items]
Restructuring and asset impairment charges	40,000,000
Postretirement Benefits Curtailment Gain
Charges And Credits [Line Items]
Restructuring and asset impairment charges	$ 69,000,000
Cameron
Charges And Credits [Line Items]
Intangible assets		2,200,000,000
Smith International Inc Smith Aand Geoservices
Charges And Credits [Line Items]
Intangible assets		$ 1,100,000,000
Minimum
Charges And Credits [Line Items]
Discount rate utilized		12.00%
Maximum
Charges And Credits [Line Items]
Discount rate utilized		13.50%
Expected percentage change in fair value of reporting units		5.00%
Four Reporting Units [Member]
Charges And Credits [Line Items]
Total number of reporting units \| Unit		4
Goodwill		$ 4,500,000,000
Seven Reporting Units [Member]
Charges And Credits [Line Items]
Total number of reporting units \| Unit		7
Goodwill		$ 11,500,000,000
Six Reporting Units
Charges And Credits [Line Items]
Total number of reporting units \| Unit		6
Goodwill		$ 8,400,000,000
Six Reporting Units \| Minimum
Charges And Credits [Line Items]
Goodwill		200,000,000
Six Reporting Units \| Maximum
Charges And Credits [Line Items]
Goodwill		$ 5,000,000,000.0

Earnings (Loss) Per Share - Reconciliation of Earnings (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Schlumberger Net Income (Loss)
Basic	$ (3,434)	$ 492	$ (10,810)	$ 913
Diluted	$ (3,434)	$ 492	$ (10,810)	$ 913
Average Shares Outstanding
Basic	1,388	1,384	1,388	1,385
Unvested restricted stock		11		11
Diluted	1,388	1,395	1,388	1,396
Earnings (loss) per Share
Basic	$ (2.47)	$ 0.36	$ (7.79)	$ 0.66
Diluted	$ (2.47)	$ 0.35	$ (7.79)	$ 0.65

Earnings (Loss) Per Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Employee Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount	50	48	50	42
Unvested Restricted Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount	15		15

Inventories - Summary of Inventory (Detail) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Raw materials & field materials	$ 1,677	$ 1,857
Work in progress	481	515
Finished goods	1,443	1,758
Inventories	$ 3,601	$ 4,130

Fixed Assets - Summary of Fixed Assets (Detail) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Property Plant And Equipment [Abstract]
Property, plant & equipment	$ 32,737	$ 35,009
Less: Accumulated depreciation	25,008	25,739
Fixed assets less accumulated depreciation	$ 7,729	$ 9,270

Fixed Assets - Depreciation Expense Relating to Fixed Assets (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Property Plant And Equipment [Abstract]
Depreciation expense relating to fixed assets	$ 417	$ 514	$ 866	$ 1,026

Multiclient Seismic Data - Change in Carrying Amount of Multiclient Seismic Data (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2020 USD ($)
Multiclient Seismic Data [Abstract]
Opening balance	$ 568
Capitalized in period	61
Charged to expense	(96)
Impairments (See Note 2)	(156)
Other	(21)
Ending balance	$ 356

Goodwill - Changes in Carrying Amount of Goodwill (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2020 USD ($)
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 16,042
Impairment (See Note 2)	(3,070)
Impact of changes in exchange rates and other	(18)
Goodwill, Ending Balance	12,954
Cameron
Goodwill [Line Items]
Goodwill, Beginning Balance	441
Impairment (See Note 2)	(183)
Goodwill, Ending Balance	258
Operating Segments \| Reservoir Characterization
Goodwill [Line Items]
Goodwill, Beginning Balance	4,560
Impact of changes in exchange rates and other	(3)
Goodwill, Ending Balance	4,557
Operating Segments \| Drilling
Goodwill [Line Items]
Goodwill, Beginning Balance	7,092
Impairment (See Note 2)	(1,659)
Impact of changes in exchange rates and other	6
Goodwill, Ending Balance	5,439
Operating Segments \| Production
Goodwill [Line Items]
Goodwill, Beginning Balance	3,949
Impairment (See Note 2)	(1,228)
Impact of changes in exchange rates and other	(21)
Goodwill, Ending Balance	$ 2,700

Intangible Assets - Schedule of Intangible Assets by Major Class (Detail) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Finite Lived Intangible Assets [Line Items]
Gross Book Value	$ 5,483	$ 9,676
Accumulated Amortization	1,861	2,587
Net Book Value	3,622	7,089
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,751	3,779
Accumulated Amortization	458	868
Net Book Value	1,293	2,911
Technology/Technical Know-How
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,387	2,498
Accumulated Amortization	538	779
Net Book Value	849	1,719
Tradenames
Finite Lived Intangible Assets [Line Items]
Gross Book Value	770	1,885
Accumulated Amortization	153	264
Net Book Value	617	1,621
Other
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,575	1,514
Accumulated Amortization	712	676
Net Book Value	$ 863	$ 838

Intangible Assets - Amortization Expense Charged to Income for Intangible Assets (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense	$ 80	$ 164	$ 213	$ 324

Intangible Assets - Additional Information (Detail) $ in Millions	Jun. 30, 2020 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Estimated amortization charged to income, remaining two quarters of 2020	$ 161
Estimated amortization charged to income, 2021	307
Estimated amortization charged to income, 2022	302
Estimated amortization charged to income, 2023	291
Estimated amortization charged to income, 2024	261
Estimated amortization charged to income, 2025	$ 254

Long-term Debt - Summary of Long-term Debt (Detail) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 16,763	$ 14,770
3.65% Senior Notes due 2023
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,495	1,495
3.90% Senior Notes due 2028
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,447	1,444
1.375% Guaranteed Notes due 2026
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,119
2.0% Guaranteed Notes due 2032
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,119
0.25% Notes due 2027
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,008	550
0.50% Notes due 2031
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,008	544
4.00% Senior Notes due 2025
Debt Instrument [Line Items]
Long-term debt, carrying amount	929	929
2.40% Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt, carrying amount	999	998
2.65% Senior Notes due 2030
Debt Instrument [Line Items]
Long-term debt, carrying amount	892
4.30% Senior Notes due 2029
Debt Instrument [Line Items]
Long-term debt, carrying amount	845	845
3.75% Senior Notes due 2024
Debt Instrument [Line Items]
Long-term debt, carrying amount	746	746
1.00% Guaranteed Notes due 2026
Debt Instrument [Line Items]
Long-term debt, carrying amount	671	665
3.30% Senior Notes due 2021
Debt Instrument [Line Items]
Long-term debt, carrying amount	664	1,597
0.00% Notes due 2024
Debt Instrument [Line Items]
Long-term debt, carrying amount	560	551
3.63% Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt, carrying amount	295	294
7.00% Notes due 2038
Debt Instrument [Line Items]
Long-term debt, carrying amount	207	208
5.95% Notes due 2041
Debt Instrument [Line Items]
Long-term debt, carrying amount	114	114
2.65% Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt, carrying amount	598	598
5.13% Notes due 2043
Debt Instrument [Line Items]
Long-term debt, carrying amount	99	99
4.00% Notes due 2023
Debt Instrument [Line Items]
Long-term debt, carrying amount	81	81
3.70% Notes due 2024
Debt Instrument [Line Items]
Long-term debt, carrying amount	55	55
4.20% Senior Notes due 2021
Debt Instrument [Line Items]
Long-term debt, carrying amount		600
Other
Debt Instrument [Line Items]
Long-term debt, carrying amount		135
Commercial paper borrowings
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 1,812	$ 2,222

Long-term Debt - Summary of Long-term Debt (Parenthetical) (Detail)	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
3.65% Senior Notes due 2023
Debt Instrument [Line Items]
Debt instrument interest rate	3.65%		3.65%	3.65%
Debt instrument maturity date			2023	2023
3.90% Senior Notes due 2028
Debt Instrument [Line Items]
Debt instrument interest rate	3.90%		3.90%	3.90%
Debt instrument maturity date			2028	2028
1.375% Notes due 2026
Debt Instrument [Line Items]
Debt instrument interest rate	1.375%		1.375%	1.375%
Debt instrument maturity date	2026		2026	2026
2.0% Notes due 2032
Debt Instrument [Line Items]
Debt instrument interest rate	2.00%		2.00%	2.00%
Debt instrument maturity date	2032		2032	2032
2.40% Senior Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate	2.40%		2.40%	2.40%
Debt instrument maturity date			2022	2022
0.25% Notes due 2027
Debt Instrument [Line Items]
Debt instrument interest rate	0.25%	0.25%	0.25%	0.25%
Debt instrument maturity date		2027	2027	2027
0.50% Notes due 2031
Debt Instrument [Line Items]
Debt instrument interest rate	0.50%	0.50%	0.50%	0.50%
Debt instrument maturity date		2031	2031	2031
4.00% Senior Notes due 2025
Debt Instrument [Line Items]
Debt instrument interest rate	4.00%		4.00%	4.00%
Debt instrument maturity date			2025	2025
4.30% Senior Notes due 2029
Debt Instrument [Line Items]
Debt instrument interest rate	4.30%		4.30%	4.30%
Debt instrument maturity date			2029	2029
3.75% Senior Notes due 2024
Debt Instrument [Line Items]
Debt instrument interest rate	3.75%		3.75%	3.75%
Debt instrument maturity date			2024	2024
2.65% Senior Notes due 2030
Debt Instrument [Line Items]
Debt instrument interest rate	2.65%		2.65%	2.65%
Debt instrument maturity date	2030		2030	2030
1.00% Guaranteed Notes due 2026
Debt Instrument [Line Items]
Debt instrument interest rate	1.00%		1.00%	1.00%
Debt instrument maturity date			2026	2026
2.65% Senior Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate	2.65%		2.65%	2.65%
Debt instrument maturity date			2022	2022
0.00% Notes due 2024
Debt Instrument [Line Items]
Debt instrument interest rate	0.00%		0.00%	0.00%
Debt instrument maturity date			2024	2024
3.30% Senior Notes due 2021
Debt Instrument [Line Items]
Debt instrument interest rate	3.30%		3.30%	3.30%
Debt instrument maturity date	2021		2021	2021
3.63% Senior Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate	3.63%		3.63%	3.63%
Debt instrument maturity date			2022	2022
7.00% Notes due 2038
Debt Instrument [Line Items]
Debt instrument interest rate	7.00%		7.00%	7.00%
Debt instrument maturity date			2038	2038
5.95% Notes due 2041
Debt Instrument [Line Items]
Debt instrument interest rate	5.95%		5.95%	5.95%
Debt instrument maturity date			2041	2041
5.13% Notes due 2043
Debt Instrument [Line Items]
Debt instrument interest rate	5.13%		5.13%	5.13%
Debt instrument maturity date			2043	2043
4.00% Notes due 2023
Debt Instrument [Line Items]
Debt instrument interest rate	4.00%		4.00%	4.00%
Debt instrument maturity date			2023	2023
3.70% Notes due 2024
Debt Instrument [Line Items]
Debt instrument interest rate	3.70%		3.70%	3.70%
Debt instrument maturity date			2024	2024
4.20% Senior Notes due 2021
Debt Instrument [Line Items]
Debt instrument interest rate	4.20%		4.20%	4.20%
Debt instrument maturity date	2021		2021	2021

Long-term Debt - Additional Information (Detail) € in Millions, $ in Millions		3 Months Ended		6 Months Ended	12 Months Ended
	Jul. 29, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 EUR (€)	Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jun. 30, 2020 EUR (€)	Dec. 31, 2019 EUR (€)
Debt Instrument [Line Items]
Long-term debt, fair value		$ 17,300		$ 17,300	$ 15,300
Committed credit facility agreement aggregated		7,980		7,980
Unused credit facility		6,170		6,170
Debt instrument premium paid on repurchase		40
Long-term debt, carrying amount		$ 16,763		$ 16,763	$ 14,770
0.25% Notes due 2027
Debt Instrument [Line Items]
Notes, face amount \| €			€ 400			€ 1,000	€ 500
Debt instrument interest rate		0.25%	0.25%	0.25%	0.25%	0.25%	0.25%
Debt instrument maturity date			2027	2027	2027
Long-term debt, carrying amount		$ 1,008		$ 1,008	$ 550
0.50% Notes due 2031
Debt Instrument [Line Items]
Notes, face amount \| €			€ 400				€ 500
Debt instrument interest rate		0.50%	0.50%	0.50%	0.50%	0.50%	0.50%
Debt instrument maturity date			2031	2031	2031
Long-term debt, carrying amount		$ 1,008		$ 1,008	$ 544
1.375% Notes due 2026
Debt Instrument [Line Items]
Notes, face amount \| €						€ 1,000
Debt instrument interest rate		1.375%		1.375%	1.375%	1.375%	1.375%
Debt instrument maturity date		2026		2026	2026
Long-term debt, carrying amount		$ 1,119		$ 1,119
2.65% Senior Notes due 2030
Debt Instrument [Line Items]
Notes, face amount \| €						€ 900
Debt instrument interest rate		2.65%		2.65%	2.65%	2.65%	2.65%
Debt instrument maturity date		2030		2030	2030
Long-term debt, carrying amount		$ 892		$ 892
2.0% Notes due 2032
Debt Instrument [Line Items]
Notes, face amount		$ 1,000		$ 1,000
Debt instrument interest rate		2.00%		2.00%	2.00%	2.00%	2.00%
Debt instrument maturity date		2032		2032	2032
Long-term debt, carrying amount		$ 1,119		$ 1,119
4.20% Senior Notes due 2021
Debt Instrument [Line Items]
Debt instrument interest rate		4.20%		4.20%	4.20%	4.20%	4.20%
Debt instrument maturity date		2021		2021	2021
Debt instrument, repurchase amount		$ 600		$ 600
Long-term debt, carrying amount					$ 600
3.30% Senior Notes due 2021
Debt Instrument [Line Items]
Debt instrument interest rate		3.30%		3.30%	3.30%	3.30%	3.30%
Debt instrument maturity date		2021		2021	2021
Debt instrument, repurchase amount		$ 935		$ 935
Long-term debt, carrying amount		664		664	$ 1,597
Commercial paper programs mature in April 2021
Debt Instrument [Line Items]
Committed credit facility agreement aggregated		1,730		1,730
Commercial paper programs mature in February 2023
Debt Instrument [Line Items]
Committed credit facility agreement aggregated		2,750		2,750
Commercial paper programs mature in July 2024
Debt Instrument [Line Items]
Committed credit facility agreement aggregated		1,500		1,500
Commercial paper programs mature in February 2025
Debt Instrument [Line Items]
Committed credit facility agreement aggregated		2,000		2,000
Commercial paper borrowings
Debt Instrument [Line Items]
Long-term debt		1,810		1,810	2,220
Long-term debt, carrying amount		$ 1,812		$ 1,812	$ 2,222
Guaranteed Euro Medium Term Note Program
Debt Instrument [Line Items]
Long-term debt, carrying amount \| €						€ 5,000
Revolving Credit Facility
Debt Instrument [Line Items]
Committed credit facility agreement aggregated \| €						€ 1,540
Credit facility extended period		1 year
Credit facility drawn	$ 0

Derivative Instruments and Hedging Activities - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2020 USD ($) Country	Jun. 30, 2020 EUR (€) Country	Mar. 31, 2020 EUR (€)	Dec. 31, 2019 EUR (€)	Dec. 31, 2017 USD ($)
Derivative [Line Items]
Fixed rate debt aggregate	$ 15,500,000,000
Variable rate debt aggregate	$ 1,900,000,000
Number of countries in which Schlumberger generates revenue \| Country	120	120
Denominated debt issued		€ 2,000,000,000.0	€ 800,000,000	€ 1,500,000,000	$ 1,100,000,000
Recognized a cumulative loss in accumulated other comprehensive loss relating to changes in the fair value of foreign currency forward contracts and cross-currency swaps	$ 260,000,000
2.20% Senior Notes due 2020
Derivative [Line Items]
Notes, face amount					$ 500,000,000
Derivative swap interest rate					2.20%
2.65% Senior Notes due 2022
Derivative [Line Items]
Notes, face amount					$ 600,000,000
Derivative swap interest rate					2.65%
Promissory note interest rate	2.65%	2.65%		2.65%
0.00% Notes due 2024
Derivative [Line Items]
Notes, face amount \| €				€ 500,000,000
Derivative swap interest rate				0.00%
Promissory note interest rate	0.00%	0.00%		0.00%
0.25% Notes due 2027
Derivative [Line Items]
Notes, face amount \| €		€ 1,000,000,000.0	€ 400,000,000	€ 500,000,000
Derivative swap interest rate	1.375%	1.375%	0.25%	0.25%
Promissory note interest rate	0.25%	0.25%	0.25%	0.25%
0.50% Notes due 2031
Derivative [Line Items]
Notes, face amount \| €			€ 400,000,000	€ 500,000,000
Derivative swap interest rate			0.50%	0.50%
Promissory note interest rate	0.50%	0.50%	0.50%	0.50%
0.50% Notes due 2031
Derivative [Line Items]
Notes, face amount \| €			€ 400,000,000
Derivative swap interest rate			0.50%
1.375% Notes due 2026
Derivative [Line Items]
Notes, face amount \| €		€ 1,000,000,000.0
Derivative swap interest rate	1.375%	1.375%
Promissory note interest rate	1.375%	1.375%		1.375%
2.00% Notes due 2032
Derivative [Line Items]
Notes, face amount \| €		€ 600,000,000
Derivative swap interest rate	2.00%	2.00%
Cross currency swaps
Derivative [Line Items]
Notional amount of interest rate swap		€ 1,600,000,000	€ 800,000,000	€ 1,500,000,000	$ 1,100,000,000
Cross currency swaps \| 2.20% Senior Notes due 2020
Derivative [Line Items]
Promissory note interest rate					1.97%
Cross currency swaps \| 2.65% Senior Notes due 2022
Derivative [Line Items]
Promissory note interest rate					2.52%
Cross currency swaps \| 0.00% Notes due 2024
Derivative [Line Items]
Promissory note interest rate				2.29%
Cross currency swaps \| 0.25% Notes due 2027
Derivative [Line Items]
Promissory note interest rate			1.87%	2.51%
Cross currency swaps \| 0.50% Notes due 2031
Derivative [Line Items]
Promissory note interest rate			2.20%	2.76%
Cross currency swaps \| 1.375% Notes due 2026
Derivative [Line Items]
Promissory note interest rate	2.77%	2.77%
Cross currency swaps \| 2.00% Notes due 2032
Derivative [Line Items]
Promissory note interest rate	3.45%	3.45%
Foreign exchange contracts
Derivative [Line Items]
Notional amount of interest rate swap	$ 9,800,000,000
Foreign exchange contracts \| Debt \| Derivatives designated as hedges
Derivative [Line Items]
Notional amount of interest rate swap	$ 6,000,000,000.0

Derivative Instruments and Hedging Activities - Effect of Derivative Instruments Designated as Fair Value and Cash Flow Hedges and Not Designated as Hedges on Consolidated Statement of Income (Loss) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivatives not designated as hedges \| Foreign exchange contracts \| Cost of services/sales
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ 11	$ (14)	$ 2	$ (8)
Cash Flow Hedging \| Derivatives designated as hedges
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	88	(24)	145	(42)
Cash Flow Hedging \| Derivatives designated as hedges \| Foreign exchange contracts \| Cost of services/sales
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	(4)	(2)	(5)	(4)
Cash Flow Hedging \| Derivatives designated as hedges \| Cross currency swaps \| Interest expense
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ 92	$ (22)	$ 150	$ (38)

Segment Information - Schedule of Segment Reporting Information, by Segment (Detail) - USD ($)
$ in Millions

3 Months Ended

6 Months Ended

Jun. 30, 2020

Jun. 30, 2019

Jun. 30, 2020

Jun. 30, 2019

Segment Reporting Information [Line Items]

Revenue

$ 5,356

$ 8,269

$ 12,811

$ 16,149

Income (Loss) Before Taxes

(3,627)

593

(11,716)

1,101

Pretax segment operating income

396

968

1,172

1,876

Interest expense

144

156

281

302

Reservoir Characterization

Segment Reporting Information [Line Items]

Revenue

1,052

1,558

2,363

3,017

Drilling

Segment Reporting Information [Line Items]

Revenue

1,731

2,420

4,020

4,806

Production

Segment Reporting Information [Line Items]

Revenue

1,615

3,077

4,318

5,967

Cameron

Segment Reporting Information [Line Items]

Revenue

1,015

1,328

2,270

2,586

Operating Segments

Segment Reporting Information [Line Items]

Revenue

5,356

8,269

12,811

16,149

Interest income

Interest expense

Operating Segments | Reservoir Characterization

Segment Reporting Information [Line Items]

Revenue

1,052

1,558

2,363

3,017

Income (Loss) Before Taxes

185

317

369

598

Operating Segments | Drilling

Segment Reporting Information [Line Items]

Revenue

1,731

2,420

4,020

4,806

Income (Loss) Before Taxes

165

301

450

608

Operating Segments | Production

Segment Reporting Information [Line Items]

Revenue

1,615

3,077

4,318

5,967

Income (Loss) Before Taxes

235

237

453

Operating Segments | Cameron

Segment Reporting Information [Line Items]

Revenue

1,015

1,328

2,270

2,586

Income (Loss) Before Taxes

165

201

313

Eliminations & other

Segment Reporting Information [Line Items]

Revenue

(57)

(114)

(160)

(227)

Income (Loss) Before Taxes

(59)

(50)

(85)

(96)

Corporate & other

^[1]

(169)

(238)

(397)

(511)

Interest income

^[2]

Interest expense

^[3]

(137)

$ (146)

(266)

$ (282)

Charges and credits

^[4]

$ (3,724)

$ (12,247)

[1]	Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets, certain centrally managed initiatives and other nonoperating items.
[2]	Interest income excludes amounts which are included in the segments’ income ($- million in 2020; $2 million in 2019).
[3]	Interest expense excludes amounts which are included in the segments’ income ($7 million in 2020; $10 million in 2019).
[4]	See Note 2 – Charges and Credits.

Segment Information - Schedule of Segment Reporting Information, by Segment (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Interest expense	$ 144	$ 156	$ 281	$ 302
Operating Segments
Segment Reporting Information [Line Items]
Interest income		2	1	5
Interest expense	$ 7	$ 10	$ 15	$ 20

Segment Information - Revenue by Geographic Area (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Revenue	$ 5,356	$ 8,269	$ 12,811	$ 16,149
Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,356	8,269	12,811	16,149
Operating Segments \| North America
Segment Reporting Information [Line Items]
Revenue	1,183	2,801	3,463	5,539
Operating Segments \| Latin America
Segment Reporting Information [Line Items]
Revenue	543	1,115	1,488	2,107
Operating Segments \| Europe/CIS/Africa
Segment Reporting Information [Line Items]
Revenue	1,449	1,896	3,200	3,602
Operating Segments \| Middle East & Asia
Segment Reporting Information [Line Items]
Revenue	2,146	2,452	4,572	4,790
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	$ 35	$ 5	$ 88	$ 111

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130543-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

+ Details

Segment Information - Summary of North America and International Revenue Disaggregated by Segment (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Revenue	$ 5,356	$ 8,269	$ 12,811	$ 16,149
Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,052	1,558	2,363	3,017
Drilling
Segment Reporting Information [Line Items]
Revenue	1,731	2,420	4,020	4,806
Production
Segment Reporting Information [Line Items]
Revenue	1,615	3,077	4,318	5,967
Cameron
Segment Reporting Information [Line Items]
Revenue	1,015	1,328	2,270	2,586
Other
Segment Reporting Information [Line Items]
Revenue	(57)	(114)	(160)	(227)
Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,356	8,269	12,811	16,149
Operating Segments \| Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,052	1,558	2,363	3,017
Operating Segments \| Drilling
Segment Reporting Information [Line Items]
Revenue	1,731	2,420	4,020	4,806
Operating Segments \| Production
Segment Reporting Information [Line Items]
Revenue	1,615	3,077	4,318	5,967
Operating Segments \| Cameron
Segment Reporting Information [Line Items]
Revenue	1,015	1,328	2,270	2,586
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	35	5	88	111
Eliminations & other \| Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	7	4	10	7
Eliminations & other \| Drilling
Segment Reporting Information [Line Items]
Revenue	45	49	89	104
Eliminations & other \| Production
Segment Reporting Information [Line Items]
Revenue	2	1	1	2
Eliminations & other \| Cameron
Segment Reporting Information [Line Items]
Revenue	(2)	(26)	21	29
Eliminations & other \| Other
Segment Reporting Information [Line Items]
Revenue	(17)	(23)	(33)	(31)
North America \| Operating Segments
Segment Reporting Information [Line Items]
Revenue	1,183	2,801	3,463	5,539
North America \| Operating Segments \| Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	165	242	365	458
North America \| Operating Segments \| Drilling
Segment Reporting Information [Line Items]
Revenue	269	552	792	1,128
North America \| Operating Segments \| Production
Segment Reporting Information [Line Items]
Revenue	408	1,419	1,475	2,792
North America \| Operating Segments \| Cameron
Segment Reporting Information [Line Items]
Revenue	341	600	847	1,182
North America \| Operating Segments \| Other
Segment Reporting Information [Line Items]
Revenue		(12)	(16)	(21)
International \| Operating Segments
Segment Reporting Information [Line Items]
Revenue	4,138	5,463	9,260	10,499
International \| Operating Segments \| Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	880	1,312	1,988	2,552
International \| Operating Segments \| Drilling
Segment Reporting Information [Line Items]
Revenue	1,417	1,819	3,139	3,574
International \| Operating Segments \| Production
Segment Reporting Information [Line Items]
Revenue	1,205	1,657	2,842	3,173
International \| Operating Segments \| Cameron
Segment Reporting Information [Line Items]
Revenue	676	754	1,402	1,375
International \| Operating Segments \| Other
Segment Reporting Information [Line Items]
Revenue	$ (40)	$ (79)	$ (111)	$ (175)

Segment Information - Additional Information (Detail) - USD ($) $ in Billions	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Segment Reporting [Abstract]
Revenue in excess of billings	$ 0.2	$ 0.2
Total backlog	$ 2.8
Percentage of revenue expected to be recognized over next 12 months	50.00%
Billings and cash collections in excess of revenue	$ 1.1	$ 0.9

Pension and Other Postretirement Benefit Plans - Net Pension Cost (Credit) for Schlumberger Pension Plans and US Postretirement Medical Plan (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	$ 69		$ 69
Postretirement medical plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	9	$ 7	18	$ 15
Interest cost	10	12	20	24
Expected return on plan assets	(17)	(17)	(34)	(33)
Amortization of prior service cost	(7)	(7)	(14)	(14)
Total pension cost (credit)	(74)	(5)	(79)	(8)
Curtailment gain	(69)		(69)
US
Defined Benefit Plan Disclosure [Line Items]
Service cost	16	13	31	27
Interest cost	38	46	75	91
Expected return on plan assets	(59)	(57)	(117)	(115)
Amortization of prior service cost	2	2	4	4
Amortization of net loss	11	8	22	16
Total pension cost (credit)	8	12	15	23
International
Defined Benefit Plan Disclosure [Line Items]
Service cost	37	32	74	64
Interest cost	75	83	150	166
Expected return on plan assets	(147)	(148)	(294)	(298)
Amortization of prior service cost		2		4
Amortization of net loss	39	15	79	31
Total pension cost (credit)	$ 4	$ (16)	$ 9	$ (33)

Pension and Other Postretirement Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020
Defined Benefit Plan Disclosure [Line Items]
Impact of curtailment	$ (69)	$ (69)
Postretirement medical plan
Defined Benefit Plan Disclosure [Line Items]
Impact of curtailment	69	$ 69
Postretirement medical plan \| Impairment and Other
Defined Benefit Plan Disclosure [Line Items]
Impact of curtailment	$ 69