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Document and Entity Information	3 Months Ended
Document and Entity Information	Mar. 31, 2020 shares
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
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	1,387,812,907
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
	Mar. 31, 2020	Mar. 31, 2019
Revenue
Total Revenue	$ 7,455	$ 7,879
Interest & other income	39	14
Expenses
Research & engineering	173	173
General & administrative	127	112
Impairments & other	8,523
Interest	136	147
Income (loss) before taxes	(8,089)	509
Tax expense (benefit)	(721)	79
Net income (loss)	(7,368)	430
Net income attributable to noncontrolling interests	8	9
Net income (loss) attributable to Schlumberger	$ (7,376)	$ 421
Basic earnings (loss) per share of Schlumberger	$ (5.32)	$ 0.30
Diluted earnings (loss) per share of Schlumberger	$ (5.32)	$ 0.30
Average shares outstanding:
Basic	1,387	1,385
Assuming dilution	1,387	1,397
Services
Revenue
Total Revenue	$ 5,426	$ 5,906
Expenses
Cost of services and sales	4,727	5,111
Product
Revenue
Total Revenue	2,029	1,973
Expenses
Cost of services and sales	$ 1,897	$ 1,841

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (7,368)	$ 430
Currency translation adjustments
Unrealized net change arising during the period	(125)	77
Cash flow hedges
Net loss on cash flow hedges	(203)	(5)
Reclassification to net income (loss) of net realized loss	(1)	(2)
Pension and other postretirement benefit plans
Amortization to net income (loss) of net actuarial loss	51	24
Amortization to net income (loss) of net prior service credit	(5)	(3)
Income taxes on pension and other postretirement benefit plans	(4)
Comprehensive income (loss)	(7,653)	525
Comprehensive income attributable to noncontrolling interests	8	9
Comprehensive income (loss) attributable to Schlumberger	$ (7,661)	$ 516

CONSOLIDATED BALANCE SHEET - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Current Assets
Cash	$ 1,375	$ 1,137
Short-term investments	1,969	1,030
Receivables less allowance for doubtful accounts (2020 - $249; 2019 - $255)	7,486	7,747
Inventories	4,148	4,130
Other current assets	1,288	1,486
Current assets total	16,266	15,530
Investments in Affiliated Companies	1,515	1,565
Fixed Assets less accumulated depreciation	8,550	9,270
Multiclient Seismic Data	556	568
Goodwill	12,924	16,042
Intangible Assets	3,673	7,089
Deferred Taxes	155
Other Assets	4,955	6,248
Total Assets	48,594	56,312
Current Liabilities
Accounts payable and accrued liabilities	10,168	10,663
Estimated liability for taxes on income	1,157	1,209
Short-term borrowings and current portion of long-term debt	1,233	524
Dividends payable	704	702
Current Liabilities Total	13,262	13,098
Long-term Debt	15,409	14,770
Postretirement Benefits	936	967
Deferred Taxes		491
Other Liabilities	3,004	2,810
Total Liabilities	32,611	32,136
Equity
Common stock	12,963	13,078
Treasury stock	(3,360)	(3,631)
Retained earnings	10,681	18,751
Accumulated other comprehensive loss	(4,723)	(4,438)
Schlumberger stockholders' equity	15,561	23,760
Noncontrolling interests	422	416
Total equity	15,983	24,176
Liabilities and stockholders equity	$ 48,594	$ 56,312

CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts on receivable	$ 249	$ 255

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

3 Months Ended

Mar. 31, 2020

Mar. 31, 2019

Cash flows from operating activities:

Net income (loss)

$ (7,368)

$ 430

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

Impairments and other charges

8,523

Depreciation and amortization

^[1]

792

903

Deferred taxes

(781)

(72)

Stock-based compensation expense

108

Earnings of equity method investments, less dividends received

(10)

Change in assets and liabilities:

Decrease (increase) in receivables

^[2]

233

(280)

Increase in inventories

^[2]

(42)

(197)

Decrease (increase) in other current assets

^[2]

(93)

(Increase) decrease in other assets

^[2]

(7)

Decrease in accounts payable and accrued liabilities

^[2]

(640)

(483)

(Decrease) increase in estimated liability for taxes on income

^[2]

(48)

Decrease in other liabilities

^[2]

(37)

(42)

Other

^[2]

NET CASH PROVIDED BY OPERATING ACTIVITIES

784

326

Cash flows from investing activities:

Capital expenditures

(407)

(413)

APS investments

(163)

(151)

Multiclient seismic data costs capitalized

(35)

(45)

(Purchase) sale of investments, net

(941)

420

Net proceeds from asset divestitures

298

Other

(64)

(41)

NET CASH USED IN INVESTING ACTIVITIES

(1,312)

(230)

Cash flows from financing activities:

Dividends paid

(692)

Proceeds from employee stock purchase plan

Proceeds from exercise of stock options

Stock repurchase program

(26)

(98)

Proceeds from issuance of long-term debt

1,475

1,812

Repayment of long-term debt

(90)

(1,368)

Net increase (decrease) in short-term borrowings

(38)

Other

(9)

(20)

NET CASH PROVIDED (USED) IN FINANCING ACTIVITIES

777

(297)

Net increase (decrease) in cash before translation effect

249

(201)

Translation effect on cash

(11)

(2)

Cash, beginning of period

1,137

1,433

Cash, end of period

$ 1,375

$ 1,230

[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.

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)	430			421		9
Currency translation adjustments	77				77
Changes in fair value of cash flow hedges	(3)				(3)
Pension and other postretirement benefit plans	21				21
Shares sold to optionees, less shares exchanged	22	(25)	47
Vesting of restricted stock		(100)	100
Shares issued under employee stock purchase plan	85	(115)	200
Stock repurchase program	(98)		(98)
Stock-based compensation expense	108	108
Dividends declared	(693)			(693)
Other	(11)		1			(12)
Balance at Mar. 31, 2019	36,524	13,000	(3,756)	31,386	(4,527)	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)	$ (7,368)			(7,376)		8
Currency translation adjustments	(128)				(125)	(3)
Changes in fair value of cash flow hedges	(202)				(202)
Pension and other postretirement benefit plans	$ 42				42
Vesting of restricted stock		$ (117)	$ 117
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	$ 108	108
Dividends declared	(694)			(694)
Other	(10)	(11)				1
Balance at Mar. 31, 2020	$ 15,983	$ 12,963	$ (3,360)	$ 10,681	$ (4,723)	$ 422
Balance, shares at Mar. 31, 2020	1,388	1,434
Treasury shares, Balance at Mar. 31, 2020			(46)

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Parenthetical) (Unaudited) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Retained Earnings
Dividends declared, per share	$ 0.50	$ 0.50

Basis of Presentation

3 Months Ended

Mar. 31, 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 three-month period ended March 31, 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

3 Months Ended

Mar. 31, 2020

Restructuring And Related Activities [Abstract]

Charges and Credits

2. Charges and Credits

In connection with the preparation of its first-quarter 2020 financial statements, Schlumberger recorded the following charges:

	(Stated in millions)

	Pretax		Tax			Net
Goodwill	$	3,070	$	-		$	3,070
Intangible assets		3,321		(815	)		2,506
APS investments		1,264		4			1,268
North America pressure pumping		587		(133	)		454
Severance		202		(7	)		195
Other		79		(9	)		70
Valuation allowance		-		164			164
	$	8,523	$	(796	)	$	7,727

All of the pretax charges presented above are classified in Impairments & other in the Consolidated Statement of Income (Loss).

•

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.

The fair value of these impaired assets 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 judgment.

•

$202 million of severance, the vast majority of which is expected to be paid during the second quarter of 2020.

•

$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 foreign tax credits in the US.

Schlumberger expects to record a significant charge relating to severance during the second quarter of 2020. However, at this time the amount cannot be reasonably estimated. Additionally, as market conditions evolve and Schlumberger further develops 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, inventory, fixed assets and other assets.

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

Earnings (Loss) Per Share

3 Months Ended

Mar. 31, 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 Loss			Average Shares Outstanding		Loss per Share			Schlumberger Net Income		Average Shares Outstanding		Earnings per Share
First Quarter
Basic	$	(7,376	)		1,387	$	(5.32	)	$	421		1,385	$	0.30
Unvested restricted stock		-			-					-		12
Diluted	$	(7,376	)		1,387	$	(5.32	)	$	421		1,397	$	0.30

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)

	Three Months Ended March 31,
	2020		2019
Employee stock options		51		43
Unvested restricted stock		16		11

Inventories

3 Months Ended

Mar. 31, 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)

	Mar. 31,		Dec. 31,
	2020		2019
Raw materials & field materials	$	1,949	$	1,857
Work in progress		542		515
Finished goods		1,657		1,758
	$	4,148	$	4,130

Fixed Assets

3 Months Ended

Mar. 31, 2020

Property Plant And Equipment [Abstract]

Fixed Assets

5. Fixed Assets

A summary of fixed assets follows:

(Stated in millions)

	Mar. 31,		Dec. 31,
	2020		2019
Property, plant & equipment	$	34,105	$	35,009
Less: Accumulated depreciation		25,555		25,739
	$	8,550	$	9,270

Depreciation expense relating to fixed assets was $449 million and $512 million in the first quarter of 2020 and 2019, respectively.

Multiclient Seismic Data

3 Months Ended

Mar. 31, 2020

Multiclient Seismic Data [Abstract]

Multiclient Seismic Data

6. Multiclient Seismic Data

The change in the carrying amount of multiclient seismic data for the three months ended March 31, 2020 was as follows:

(Stated in millions)

Balance at December 31, 2019	$	568
Capitalized in period		35
Charged to expense		(47	)
Balance at March 31, 2020	$	556

Intangible Assets

3 Months Ended

Mar. 31, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Intangible Assets

7. Intangible Assets

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

	(Stated in millions)

	Mar. 31, 2020						Dec. 31, 2019
	Gross		Accumulated		Net Book		Gross		Accumulated		Net Book
	Book Value		Amortization		Value		Book Value		Amortization		Value
Customer relationships	$	1,758	$	442	$	1,316	$	3,779	$	868	$	2,911
Technology/technical know-how		1,387		512		875		2,498		779		1,719
Tradenames		772		146		626		1,885		264		1,621
Other		1,553		697		856		1,514		676		838
	$	5,470	$	1,797	$	3,673	$	9,676	$	2,587	$	7,089

Amortization expense charged to income was $133 million during the first quarter of 2020 and $160 million during the first quarter of 2019.

Based on the net book value of intangible assets at March 31, 2020, amortization charged to income for the subsequent five years is estimated to be: remaining three quarters of 2020—$237 million; 2021—$307 million; 2022—$298 million; 2023—$280 million; 2024—$259 million; and 2025—$254 million.

Long-term Debt

3 Months Ended

Mar. 31, 2020

Debt Disclosure [Abstract]

Long-term Debt

8. Long-term Debt

A summary of Long-term Debt follows:

(Stated in millions)

	Mar. 31,		Dec. 31,
	2020		2019
3.30% Senior Notes due 2021	$	1,598	$	1,597
3.65% Senior Notes due 2023		1,495		1,495
3.90% Senior Notes due 2028		1,445		1,444
2.40% Senior Notes due 2022		998		998
0.25% Notes due 2027		983		550
0.50% Notes due 2031		972		544
4.00% Senior Notes due 2025		929		929
4.30% Senior Notes due 2029		845		845
3.75% Senior Notes due 2024		746		746
1.00% Guaranteed Notes due 2026		656		665
2.65% Senior Notes due 2022		598		598
0.00% Notes due 2024		548		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		2,745		2,222
Other		-		135
	$	15,409	$	14,770

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.

The estimated fair value of Schlumberger’s Long-term Debt, based on quoted market prices at March 31, 2020 and December 31, 2019, was $15.1 billion and $15.3 billion, respectively.

At March 31, 2020, Schlumberger had separate committed credit facility agreements aggregating $6.25 billion with commercial banks, of which $3.5 billion was available and unused. These committed facilities support commercial paper programs in the United States and Europe, of which $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.

Subsequent to the end of the first quarter of 2020, Schlumberger entered into a €1.2 billion committed revolving credit facility. This one-year facility can be extended at Schlumberger’s option for up to an additional year. Schlumberger can potentially upsize this facility through syndication. As of April 22, 2020, no amounts have been drawn under this facility.

Borrowings under the commercial paper programs at March 31, 2020 were $2.75 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.

Derivative Instruments and Hedging Activities

3 Months Ended

Mar. 31, 2020

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities

9. 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 March 31, 2020, Schlumberger had fixed rate debt aggregating $13.7 billion and variable rate debt aggregating $2.9 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.

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 March 31, 2020, contracts were outstanding for the US dollar equivalent of $7.3 billion in various foreign currencies, of which $4.0 billion relates to hedges of debt denominated in currencies other than the functional currency.

At March 31, 2020, Schlumberger recognized a cumulative $202 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)
	First Quarter
	2020			2019			Consolidated Statement of Income (Loss) Classification
Derivatives designated as cash flow hedges:
Foreign exchange contracts	$	(1	)	$	(2	)	Cost of services/sales
Cross currency swaps		58			(16	)	Interest expense
	$	57		$	(18	)
Derivatives not designated as hedges:
Foreign exchange contracts	$	(9	)	$	6		Cost of services/sales

Contingencies

3 Months Ended

Mar. 31, 2020

Commitments And Contingencies Disclosure [Abstract]

Contingencies

10. 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

3 Months Ended

Mar. 31, 2020

Segment Reporting [Abstract]

Segment Information

11. Segment Information

				(Stated in millions)

	First Quarter 2020						First Quarter 2019
				Income (Loss)						Income (Loss)
				Before						Before
	Revenue			Taxes			Revenue			Taxes
Reservoir Characterization	$	1,311		$	184		$	1,459		$	281
Drilling		2,291			285			2,387			307
Production		2,703			212			2,890			217
Cameron		1,254			121			1,259			148
Eliminations & other		(104	)		(26	)		(116	)		(45	)
					776						908
Corporate & other ⁽¹⁾					(228	)					(273	)
Interest income ⁽²⁾					15						10
Interest expense ⁽³⁾					(129	)					(136	)
Charges and credits ⁽⁴⁾					(8,523	)					-
	$	7,455		$	(8,089	)	$	7,879		$	509

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; $1 million in 2019).

⁽³⁾	^{Interest expense excludes amounts which are included in the segments’ income ($7 million in 2020; $11 million in 2019).}

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

Revenue by geographic area was as follows:

	(Stated in millions)

	First Quarter
	2020		2019
North America	$	2,279	$	2,738
Latin America		945		992
Europe/CIS/Africa		1,751		1,707
Middle East & Asia		2,425		2,338
Eliminations & other		55		104
	$	7,455	$	7,879

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

							(Stated in millions)

	First Quarter 2020
	North						Eliminations
	America			International			& other			Total
Reservoir Characterization	$	199		$	1,107		$	5		$	1,311
Drilling		524			1,722			45			2,291
Production		1,066			1,637			-			2,703
Cameron		506			726			22			1,254
Other		(16	)		(71	)		(17	)		(104	)
	$	2,279		$	5,121		$	55		$	7,455


	First Quarter 2019
	North						Eliminations
	America			International			& other			Total
Reservoir Characterization	$	216		$	1,239		$	4		$	1,459
Drilling		578			1,755			54			2,387
Production		1,373			1,516			1			2,890
Cameron		581			621			57			1,259
Other		(10	)		(94	)		(12	)		(116	)
	$	2,738		$	5,037		$	104		$	7,879

Revenue in excess of billings related to contracts where revenue is recognized over time was $0.2 billion at both March 31, 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 $3.0 billion at March 31, 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 March 31, 2020 and $0.9 billion at December 31, 2019. Such amounts are included within Accounts payable and accrued liabilities in the Consolidated Balance Sheet.

Pension and Other Postretirement Benefit Plans

3 Months Ended

Mar. 31, 2020

Compensation And Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefit Plans

12. Pension and Other Postretirement Benefit Plans

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

(Stated in millions)

	First Quarter
	2020						2019
	US			Int'l			US			Int'l
Service cost	$	15		$	37		$	14		$	32
Interest cost		37			75			45			83
Expected return on plan assets		(58	)		(147	)		(58	)		(150	)
Amortization of prior service cost		2			-			2			2
Amortization of net loss		11			40			8			16
	$	7		$	5		$	11		$	(17	)

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

(Stated in millions)

	First Quarter
	2020			2019
Service cost	$	9		$	8
Interest cost		10			12
Expected return on plan assets		(17	)		(16	)
Amortization of prior service credit		(7	)		(7	)
	$	(5	)	$	(3	)

Charges and Credits (Tables)

3 Months Ended

Mar. 31, 2020

Restructuring And Related Activities [Abstract]

Summary of Charges and Credits

In connection with the preparation of its first-quarter 2020 financial statements, Schlumberger recorded the following charges:

	(Stated in millions)

	Pretax		Tax			Net
Goodwill	$	3,070	$	-		$	3,070
Intangible assets		3,321		(815	)		2,506
APS investments		1,264		4			1,268
North America pressure pumping		587		(133	)		454
Severance		202		(7	)		195
Other		79		(9	)		70
Valuation allowance		-		164			164
	$	8,523	$	(796	)	$	7,727

Earnings (Loss) Per Share (Tables)

3 Months Ended

Mar. 31, 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 Loss			Average Shares Outstanding		Loss per Share			Schlumberger Net Income		Average Shares Outstanding		Earnings per Share
First Quarter
Basic	$	(7,376	)		1,387	$	(5.32	)	$	421		1,385	$	0.30
Unvested restricted stock		-			-					-		12
Diluted	$	(7,376	)		1,387	$	(5.32	)	$	421		1,397	$	0.30

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

(Stated in millions)

	Three Months Ended March 31,
	2020		2019
Employee stock options		51		43
Unvested restricted stock		16		11

Inventories (Tables)

3 Months Ended

Mar. 31, 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)

	Mar. 31,		Dec. 31,
	2020		2019
Raw materials & field materials	$	1,949	$	1,857
Work in progress		542		515
Finished goods		1,657		1,758
	$	4,148	$	4,130

Fixed Assets (Tables)

3 Months Ended

Mar. 31, 2020

Property Plant And Equipment [Abstract]

Summary of Fixed Assets

A summary of fixed assets follows:

(Stated in millions)

	Mar. 31,		Dec. 31,
	2020		2019
Property, plant & equipment	$	34,105	$	35,009
Less: Accumulated depreciation		25,555		25,739
	$	8,550	$	9,270

Multiclient Seismic Data (Tables)

3 Months Ended

Mar. 31, 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 three months ended March 31, 2020 was as follows:

(Stated in millions)

Balance at December 31, 2019	$	568
Capitalized in period		35
Charged to expense		(47	)
Balance at March 31, 2020	$	556

Intangible Assets (Tables)

3 Months Ended

Mar. 31, 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)

	Mar. 31, 2020						Dec. 31, 2019
	Gross		Accumulated		Net Book		Gross		Accumulated		Net Book
	Book Value		Amortization		Value		Book Value		Amortization		Value
Customer relationships	$	1,758	$	442	$	1,316	$	3,779	$	868	$	2,911
Technology/technical know-how		1,387		512		875		2,498		779		1,719
Tradenames		772		146		626		1,885		264		1,621
Other		1,553		697		856		1,514		676		838
	$	5,470	$	1,797	$	3,673	$	9,676	$	2,587	$	7,089

Long-term Debt (Tables)

3 Months Ended

Mar. 31, 2020

Debt Disclosure [Abstract]

Summary of Long-term Debt

A summary of Long-term Debt follows:

(Stated in millions)

	Mar. 31,		Dec. 31,
	2020		2019
3.30% Senior Notes due 2021	$	1,598	$	1,597
3.65% Senior Notes due 2023		1,495		1,495
3.90% Senior Notes due 2028		1,445		1,444
2.40% Senior Notes due 2022		998		998
0.25% Notes due 2027		983		550
0.50% Notes due 2031		972		544
4.00% Senior Notes due 2025		929		929
4.30% Senior Notes due 2029		845		845
3.75% Senior Notes due 2024		746		746
1.00% Guaranteed Notes due 2026		656		665
2.65% Senior Notes due 2022		598		598
0.00% Notes due 2024		548		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		2,745		2,222
Other		-		135
	$	15,409	$	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=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644

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=26873400&loc=d3e23780-122690

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 835
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-Section 45
-Paragraph 2
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Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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-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)

3 Months Ended

Mar. 31, 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)
	First Quarter
	2020			2019			Consolidated Statement of Income (Loss) Classification
Derivatives designated as cash flow hedges:
Foreign exchange contracts	$	(1	)	$	(2	)	Cost of services/sales
Cross currency swaps		58			(16	)	Interest expense
	$	57		$	(18	)
Derivatives not designated as hedges:
Foreign exchange contracts	$	(9	)	$	6		Cost of services/sales

Segment Information (Tables)

3 Months Ended

Mar. 31, 2020

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

				(Stated in millions)

	First Quarter 2020						First Quarter 2019
				Income (Loss)						Income (Loss)
				Before						Before
	Revenue			Taxes			Revenue			Taxes
Reservoir Characterization	$	1,311		$	184		$	1,459		$	281
Drilling		2,291			285			2,387			307
Production		2,703			212			2,890			217
Cameron		1,254			121			1,259			148
Eliminations & other		(104	)		(26	)		(116	)		(45	)
					776						908
Corporate & other ⁽¹⁾					(228	)					(273	)
Interest income ⁽²⁾					15						10
Interest expense ⁽³⁾					(129	)					(136	)
Charges and credits ⁽⁴⁾					(8,523	)					-
	$	7,455		$	(8,089	)	$	7,879		$	509

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; $1 million in 2019).

⁽³⁾	^{Interest expense excludes amounts which are included in the segments’ income ($7 million in 2020; $11 million in 2019).}

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

Revenue by Geographic Area

Revenue by geographic area was as follows:

	(Stated in millions)

	First Quarter
	2020		2019
North America	$	2,279	$	2,738
Latin America		945		992
Europe/CIS/Africa		1,751		1,707
Middle East & Asia		2,425		2,338
Eliminations & other		55		104
	$	7,455	$	7,879

Summary of North America and International Revenue Disaggregated by Segment

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

							(Stated in millions)

	First Quarter 2020
	North						Eliminations
	America			International			& other			Total
Reservoir Characterization	$	199		$	1,107		$	5		$	1,311
Drilling		524			1,722			45			2,291
Production		1,066			1,637			-			2,703
Cameron		506			726			22			1,254
Other		(16	)		(71	)		(17	)		(104	)
	$	2,279		$	5,121		$	55		$	7,455


	First Quarter 2019
	North						Eliminations
	America			International			& other			Total
Reservoir Characterization	$	216		$	1,239		$	4		$	1,459
Drilling		578			1,755			54			2,387
Production		1,373			1,516			1			2,890
Cameron		581			621			57			1,259
Other		(10	)		(94	)		(12	)		(116	)
	$	2,738		$	5,037		$	104		$	7,879

Pension and Other Postretirement Benefit Plans (Tables)

3 Months Ended

Mar. 31, 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)

	First Quarter
	2020						2019
	US			Int'l			US			Int'l
Service cost	$	15		$	37		$	14		$	32
Interest cost		37			75			45			83
Expected return on plan assets		(58	)		(147	)		(58	)		(150	)
Amortization of prior service cost		2			-			2			2
Amortization of net loss		11			40			8			16
	$	7		$	5		$	11		$	(17	)

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

(Stated in millions)

	First Quarter
	2020			2019
Service cost	$	9		$	8
Interest cost		10			12
Expected return on plan assets		(17	)		(16	)
Amortization of prior service credit		(7	)		(7	)
	$	(5	)	$	(3	)

Charges and Credits - Summary of Charges and Credits (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Charges And Credits [Line Items]
Charges and credits, Pretax	$ 8,523,000,000
Charges and credits, Tax	(796,000,000)
Charges and credits, Net	7,727,000,000	$ 0
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 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
APS investments \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	1,264,000,000
Charges and credits, Tax	4,000,000
Charges and credits, Net	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
Severance \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	202,000,000
Charges and credits, Tax	(7,000,000)
Charges and credits, Net	195,000,000
Other \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	79,000,000
Charges and credits, Tax	(9,000,000)
Charges and credits, Net	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

Charges and Credits - Additional Information (Detail)	3 Months Ended
Charges and Credits - Additional Information (Detail)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($) Unit	Mar. 31, 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		$ 12,924,000,000		$ 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		7,727,000,000	$ 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 \| Scenario Forecast [Member]
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
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
	Mar. 31, 2020	Mar. 31, 2019
Schlumberger Net Income (Loss)
Basic	$ (7,376)	$ 421
Diluted	$ (7,376)	$ 421
Average Shares Outstanding
Basic	1,387	1,385
Unvested restricted stock		12
Diluted	1,387	1,397
Earnings (loss) per Share
Basic	$ (5.32)	$ 0.30
Diluted	$ (5.32)	$ 0.30

Earnings (Loss) Per Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail) - shares shares in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 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	51	43
Unvested Restricted Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount	16	11

Inventories - Summary of Inventory (Detail) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Raw materials & field materials	$ 1,949	$ 1,857
Work in progress	542	515
Finished goods	1,657	1,758
Inventories	$ 4,148	$ 4,130

Fixed Assets - Summary of Fixed Assets (Detail) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Property Plant And Equipment [Abstract]
Property, plant & equipment	$ 34,105	$ 35,009
Less: Accumulated depreciation	25,555	25,739
Fixed assets less accumulated depreciation	$ 8,550	$ 9,270

Fixed Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Property Plant And Equipment [Abstract]
Depreciation expense relating to fixed assets	$ 449	$ 512

Multiclient Seismic Data - Change in Carrying Amount of Multiclient Seismic Data (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)
Multiclient Seismic Data [Abstract]
Opening balance	$ 568
Capitalized in period	35
Charged to expense	(47)
Ending balance	$ 556

Intangible Assets - Schedule of Intangible Assets by Major Class (Detail) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Finite Lived Intangible Assets [Line Items]
Gross Book Value	$ 5,470	$ 9,676
Accumulated Amortization	1,797	2,587
Net Book Value	3,673	7,089
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,758	3,779
Accumulated Amortization	442	868
Net Book Value	1,316	2,911
Technology/Technical Know-How
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,387	2,498
Accumulated Amortization	512	779
Net Book Value	875	1,719
Tradenames
Finite Lived Intangible Assets [Line Items]
Gross Book Value	772	1,885
Accumulated Amortization	146	264
Net Book Value	626	1,621
Other
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,553	1,514
Accumulated Amortization	697	676
Net Book Value	$ 856	$ 838

Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense	$ 133	$ 160
Estimated amortization charged to income, remaining three quarters of 2020	237
Estimated amortization charged to income, 2021	307
Estimated amortization charged to income, 2022	298
Estimated amortization charged to income, 2023	280
Estimated amortization charged to income, 2024	259
Estimated amortization charged to income, 2025	$ 254

Long-term Debt - Summary of Long-term Debt (Detail) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 15,409	$ 14,770
3.30% Senior Notes due 2021
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,598	1,597
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	1,445	1,444
2.40% Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt, carrying amount	998	998
0.25% Notes due 2027
Debt Instrument [Line Items]
Long-term debt, carrying amount	983	550
0.50% Notes due 2031
Debt Instrument [Line Items]
Long-term debt, carrying amount	972	544
4.00% Senior Notes due 2025
Debt Instrument [Line Items]
Long-term debt, carrying amount	929	929
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	656	665
2.65% Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt, carrying amount	598	598
0.00% Notes due 2024
Debt Instrument [Line Items]
Long-term debt, carrying amount	548	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
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	$ 2,745	$ 2,222

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

Long-term Debt - Additional Information (Detail) € in Millions, $ in Millions		3 Months Ended	12 Months Ended
	Apr. 22, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Mar. 31, 2020 EUR (€)	Dec. 31, 2019 EUR (€)
Debt Instrument [Line Items]
Long-term debt, fair value		$ 15,100	$ 15,300
Committed credit facility agreement aggregated		6,250
Unused credit facility		$ 3,500
Revolving Credit Facility
Debt Instrument [Line Items]
Committed credit facility agreement aggregated \| €				€ 1,200
Credit facility extended period		1 year
Revolving Credit Facility \| Subsequent Event
Debt Instrument [Line Items]
Credit facility drawn	$ 0
Commercial paper programs mature in February 2023
Debt Instrument [Line Items]
Committed credit facility agreement aggregated		$ 2,750
Commercial paper programs mature in July 2024
Debt Instrument [Line Items]
Committed credit facility agreement aggregated		1,500
Commercial paper programs mature in February 2025
Debt Instrument [Line Items]
Committed credit facility agreement aggregated		2,000
Commercial paper borrowings
Debt Instrument [Line Items]
Long-term debt		$ 2,750	$ 2,200
0.25% Notes due 2027
Debt Instrument [Line Items]
Notes, face amount \| €				€ 400	€ 500
Debt instrument interest rate		0.25%	0.25%	0.25%	0.25%
Debt instrument maturity date		2027	2027
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%
Debt instrument maturity date		2031	2031

Derivative Instruments and Hedging Activities - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2020 USD ($) Country	Mar. 31, 2020 EUR (€) Country	Dec. 31, 2019 EUR (€)	Dec. 31, 2017 USD ($)
Derivative [Line Items]
Fixed rate debt aggregate	$ 13,700,000,000
Variable rate debt aggregate	$ 2,900,000,000
Number of countries in which Schlumberger generates revenue \| Country	120	120
Denominated debt issued		€ 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	$ 202,000,000
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 \| €		€ 400,000,000	€ 500,000,000
Derivative swap interest rate	0.25%	0.25%	0.25%
Promissory note interest rate	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%	0.50%
Promissory note interest rate	0.50%	0.50%	0.50%
Cross currency swaps
Derivative [Line Items]
Notional amount of interest rate swap		€ 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%	1.87%	2.51%
Cross currency swaps \| 0.50% Notes due 2031
Derivative [Line Items]
Promissory note interest rate	2.20%	2.20%	2.76%
Foreign exchange contracts
Derivative [Line Items]
Notional amount of interest rate swap	$ 7,300,000,000
Foreign exchange contracts \| Debt \| Derivatives designated as hedges
Derivative [Line Items]
Notional amount of interest rate swap	$ 4,000,000,000.0

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
	Mar. 31, 2020	Mar. 31, 2019
Derivatives not designated as hedges \| Foreign exchange contracts \| Cost of services/sales
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ (9)	$ 6
Cash Flow Hedging \| Derivatives designated as hedges
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	57	(18)
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	(1)	(2)
Cash Flow Hedging \| Derivatives designated as hedges \| Cross currency swaps \| Interest expense
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ 58	$ (16)

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

3 Months Ended

Mar. 31, 2020

Mar. 31, 2019

Segment Reporting Information [Line Items]

Revenue

$ 7,455

$ 7,879

Income (Loss) Before Taxes

(8,089)

509

Pretax segment operating income

776

908

Interest expense

136

147

Reservoir Characterization

Segment Reporting Information [Line Items]

Revenue

1,311

1,459

Drilling

Segment Reporting Information [Line Items]

Revenue

2,291

2,387

Production

Segment Reporting Information [Line Items]

Revenue

2,703

2,890

Cameron

Segment Reporting Information [Line Items]

Revenue

1,254

1,259

Operating Segments

Segment Reporting Information [Line Items]

Revenue

7,455

7,879

Interest income

Interest expense

Operating Segments | Reservoir Characterization

Segment Reporting Information [Line Items]

Revenue

1,311

1,459

Income (Loss) Before Taxes

184

281

Operating Segments | Drilling

Segment Reporting Information [Line Items]

Revenue

2,291

2,387

Income (Loss) Before Taxes

285

307

Operating Segments | Production

Segment Reporting Information [Line Items]

Revenue

2,703

2,890

Income (Loss) Before Taxes

212

217

Operating Segments | Cameron

Segment Reporting Information [Line Items]

Revenue

1,254

1,259

Income (Loss) Before Taxes

121

148

Eliminations & other

Segment Reporting Information [Line Items]

Revenue

(104)

(116)

Income (Loss) Before Taxes

(26)

(45)

Corporate & other

^[1]

(228)

(273)

Interest income

^[2]

Interest expense

^[3]

(129)

$ (136)

Charges and credits

^[4]

$ (8,523)

[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; $1 million in 2019).
[3]	Interest expense excludes amounts which are included in the segments’ income ($7 million in 2020; $11 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
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Interest expense	$ 136	$ 147
Operating Segments
Segment Reporting Information [Line Items]
Interest income		1
Interest expense	$ 7	$ 11

Segment Information - Revenue by Geographic Area (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Revenue	$ 7,455	$ 7,879
Operating Segments
Segment Reporting Information [Line Items]
Revenue	7,455	7,879
Operating Segments \| North America
Segment Reporting Information [Line Items]
Revenue	2,279	2,738
Operating Segments \| Latin America
Segment Reporting Information [Line Items]
Revenue	945	992
Operating Segments \| Europe/CIS/Africa
Segment Reporting Information [Line Items]
Revenue	1,751	1,707
Operating Segments \| Middle East & Asia
Segment Reporting Information [Line Items]
Revenue	2,425	2,338
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	$ 55	$ 104

Segment Information - Summary of North America and International Revenue Disaggregated by Segment (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Revenue	$ 7,455	$ 7,879
Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,311	1,459
Drilling
Segment Reporting Information [Line Items]
Revenue	2,291	2,387
Production
Segment Reporting Information [Line Items]
Revenue	2,703	2,890
Cameron
Segment Reporting Information [Line Items]
Revenue	1,254	1,259
Other
Segment Reporting Information [Line Items]
Revenue	(104)	(116)
Operating Segments
Segment Reporting Information [Line Items]
Revenue	7,455	7,879
Operating Segments \| Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,311	1,459
Operating Segments \| Drilling
Segment Reporting Information [Line Items]
Revenue	2,291	2,387
Operating Segments \| Production
Segment Reporting Information [Line Items]
Revenue	2,703	2,890
Operating Segments \| Cameron
Segment Reporting Information [Line Items]
Revenue	1,254	1,259
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	55	104
Eliminations & other \| Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	5	4
Eliminations & other \| Drilling
Segment Reporting Information [Line Items]
Revenue	45	54
Eliminations & other \| Production
Segment Reporting Information [Line Items]
Revenue		1
Eliminations & other \| Cameron
Segment Reporting Information [Line Items]
Revenue	22	57
Eliminations & other \| Other
Segment Reporting Information [Line Items]
Revenue	(17)	(12)
North America \| Operating Segments
Segment Reporting Information [Line Items]
Revenue	2,279	2,738
North America \| Operating Segments \| Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	199	216
North America \| Operating Segments \| Drilling
Segment Reporting Information [Line Items]
Revenue	524	578
North America \| Operating Segments \| Production
Segment Reporting Information [Line Items]
Revenue	1,066	1,373
North America \| Operating Segments \| Cameron
Segment Reporting Information [Line Items]
Revenue	506	581
North America \| Operating Segments \| Other
Segment Reporting Information [Line Items]
Revenue	(16)	(10)
International \| Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,121	5,037
International \| Operating Segments \| Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,107	1,239
International \| Operating Segments \| Drilling
Segment Reporting Information [Line Items]
Revenue	1,722	1,755
International \| Operating Segments \| Production
Segment Reporting Information [Line Items]
Revenue	1,637	1,516
International \| Operating Segments \| Cameron
Segment Reporting Information [Line Items]
Revenue	726	621
International \| Operating Segments \| Other
Segment Reporting Information [Line Items]
Revenue	$ (71)	$ (94)

Segment Information - Additional Information (Detail) - USD ($) $ in Billions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Segment Reporting [Abstract]
Revenue in excess of billings	$ 0.2	$ 0.2
Total backlog	$ 3.0
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
	Mar. 31, 2020	Mar. 31, 2019
Postretirement medical plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 9	$ 8
Interest cost	10	12
Expected return on plan assets	(17)	(16)
Amortization of prior service cost	(7)	(7)
Total pension cost (credit)	(5)	(3)
US
Defined Benefit Plan Disclosure [Line Items]
Service cost	15	14
Interest cost	37	45
Expected return on plan assets	(58)	(58)
Amortization of prior service cost	2	2
Amortization of net loss	11	8
Total pension cost (credit)	7	11
International
Defined Benefit Plan Disclosure [Line Items]
Service cost	37	32
Interest cost	75	83
Expected return on plan assets	(147)	(150)
Amortization of prior service cost		2
Amortization of net loss	40	16
Total pension cost (credit)	$ 5	$ (17)