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Document and Entity Information	3 Months Ended
Document and Entity Information	Mar. 31, 2015 shares
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	SLB
Entity Registrant Name	SCHLUMBERGER LTD /NV/
Entity Central Index Key	0000087347
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	1,269,726,824

CONSOLIDATED STATEMENT OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Revenue	$ 10,248	$ 11,239
Interest & other income	49	76
Expenses
Cost of revenue	8,096	8,745
Research & engineering	267	284
General & administrative	119	106
Restructuring & other	439	0
Interest	82	103
Income before taxes	1,294	2,077
Taxes on income	306	469
Net income	988	1,608
Net income attributable to noncontrolling interests	13	16
Net income attributable to Schlumberger	$ 975	$ 1,592
Basic earnings per share of Schlumberger	$ 0.76	$ 1.22
Diluted earnings per share of Schlumberger	$ 0.76	$ 1.21
Average shares outstanding:
Basic	1,276	1,306
Assuming dilution	1,285	1,318

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 988	$ 1,608
Currency translation adjustments
Unrealized net change arising during the period	(113)	(88)
Marketable securities
Unrealized (loss) gain arising during the period	(18)	11
Cash flow hedges
Net (loss) gain on cash flow hedges	(152)	16
Reclassification to net income of net realized loss (gain)	118	(3)
Actuarial loss
Amortization to net income of net actuarial loss	74	41
Prior service cost
Amortization to net income of net prior service cost	27	32
Income taxes on pension and other postretirement benefit plans	(15)	(10)
Comprehensive income	909	1,607
Comprehensive income attributable to noncontrolling interests	13	16
Comprehensive income attributable to Schlumberger	$ 896	$ 1,591

CONSOLIDATED BALANCE SHEET - USD ($) $ in Millions	Mar. 31, 2015	Dec. 31, 2014
Current Assets
Cash	$ 2,121	$ 3,130
Short-term investments	4,682	4,371
Receivables less allowance for doubtful accounts (2015 - $292; 2014 - $275)	10,443	11,171
Inventories	4,666	4,628
Deferred taxes	156	144
Other current assets	1,326	1,250
Current assets total	23,394	24,694
Fixed Income Investments, held to maturity	436	442
Investments in Affiliated Companies	3,272	3,235
Fixed Assets less accumulated depreciation	15,135	15,396
Multiclient Seismic Data	850	793
Goodwill	15,512	15,487
Intangible Assets	4,575	4,654
Other Assets	2,237	2,203
Total Assets	65,411	66,904
Current Liabilities
Accounts payable and accrued liabilities	8,469	9,246
Estimated liability for taxes on income	1,631	1,647
Long-term debt - current portion	3,180	1,244
Short-term borrowings	648	1,521
Dividends payable	644	518
Current Liabilities Total	14,572	14,176
Long-term Debt	8,898	10,565
Postretirement Benefits	1,419	1,501
Deferred Taxes	1,363	1,296
Other Liabilities	1,293	1,317
Total Liabilities	27,545	28,855
Equity
Common stock	12,535	12,495
Treasury stock	(12,263)	(11,772)
Retained earnings	41,669	41,333
Accumulated other comprehensive loss	(4,285)	(4,206)
Schlumberger stockholders' equity	37,656	37,850
Noncontrolling interests	210	199
Total equity	37,866	38,049
Liabilities and stockholders equity	$ 65,411	$ 66,904

CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2015	Dec. 31, 2014
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts on receivable	$ 292	$ 275

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

3 Months Ended

Mar. 31, 2015

Mar. 31, 2014

Cash flows from operating activities:

Net income

$ 988

$ 1,608

Adjustments to reconcile net income to cash provided by operating activities:

Restructuring and other charges

439

Depreciation and amortization

^[1]

1,042

1,001

Pension and other postretirement benefits expense

114

Stock-based compensation expense

Pension and other postretirement benefits funding

(120)

(72)

Earnings of equity method investments, less dividends received

(35)

(61)

Change in assets and liabilities:

Decrease (increase) in receivables

^[2]

793

(202)

Increase in inventories

^[2]

(52)

(137)

Increase in other current assets

^[2]

(97)

(181)

Increase in other assets

^[2]

(60)

(31)

Decrease in accounts payable and accrued liabilities

^[2]

(1,348)

(592)

(Decrease) increase in estimated liability for taxes on income

^[2]

(66)

242

Decrease in other liabilities

^[2]

(57)

(20)

Other

^[2]

149

119

NET CASH PROVIDED BY OPERATING ACTIVITIES

1,770

1,837

Cash flows from investing activities:

Capital expenditures

(606)

(864)

SPM investments

(109)

(202)

Multiclient seismic data capitalized

(101)

(82)

Business acquisitions and investments, net of cash acquired

(44)

(239)

(Purchase) sale of investments, net

(307)

1,576

Other

(70)

(17)

NET CASH (USED IN) PROVIDED BY INVESTING ACTIVITIES

(1,237)

172

Cash flows from financing activities:

Dividends paid

(512)

(410)

Proceeds from employee stock purchase plan

144

134

Proceeds from exercise of stock options

146

Stock repurchase program

(719)

(899)

Proceeds from issuance of long-term debt

1,572

1,110

Repayment of long-term debt

(1,144)

(1,574)

Net decrease in short-term borrowings

(902)

(222)

Other

(2)

NET CASH USED IN FINANCING ACTIVITIES

(1,525)

(1,708)

Net (decrease) increase in cash before translation effect

(992)

301

Translation effect on cash

(17)

(21)

Cash, beginning of period

3,130

3,472

Cash, end of period

$ 2,121

$ 3,752

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

CONSOLIDATED STATEMENT OF EQUITY - 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, 2013	$ 39,635	$ 12,192	$ (8,135)	$ 37,966	$ (2,554)	$ 166
Net income	1,608			1,592		16
Unrealized net change arising during the period	(88)				(88)
Unrealized (loss) gain arising during the period	11				11
Changes in fair value of cash flow hedges	13				13
Pension and other postretirement benefit plans	63				63
Shares sold to optionees, less shares exchanged	146	(7)	153
Vesting of restricted stock		(30)	30
Shares issued under employee stock purchase plan	134	6	128
Stock repurchase program	(899)		(899)
Stock-based compensation expense	77	77
Dividends declared	(522)			(522)
Other	2	8				(6)
Balance at Mar. 31, 2014	40,180	12,246	(8,723)	39,036	(2,555)	176
Balance at Dec. 31, 2014	38,049	12,495	(11,772)	41,333	(4,206)	199
Net income	988			975		13
Unrealized net change arising during the period	(113)				(113)
Unrealized (loss) gain arising during the period	(18)				(18)
Changes in fair value of cash flow hedges	(34)				(34)
Pension and other postretirement benefit plans	86				86
Shares sold to optionees, less shares exchanged	38	(16)	54
Vesting of restricted stock		(39)	39
Shares issued under employee stock purchase plan	144	9	135
Stock repurchase program	(719)		(719)
Stock-based compensation expense	80	80
Dividends declared	(639)			(639)
Other	4	6				(2)
Balance at Mar. 31, 2015	$ 37,866	$ 12,535	$ (12,263)	$ 41,669	$ (4,285)	$ 210
Balance, shares at Dec. 31, 2014	1,275	1,434	(159)
Shares sold to optionees, less shares exchanged, shares	1		1
Vesting of restricted stock, shares	1		1
Shares issued under employee stock purchase plan, shares	2		2
Stock repurchase program, shares	(9)		(9)
Balance, shares at Mar. 31, 2015	1,270	1,434	(164)

CONSOLIDATED STATEMENT OF EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Retained Earnings
Dividends declared, per share	$ 0.50	$ 0.40

Basis of Presentation	3 Months Ended
Basis of Presentation	Mar. 31, 2015
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, 2015 are not necessarily indicative of the results that may be expected for the full year ending December 31, 2015. The December 31, 2014 balance sheet information has been derived from the Schlumberger 2014 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, 2014, filed with the Securities and Exchange Commission on January 29, 2015. New Accounting Pronouncement In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers. This ASU amends the existing accounting standards for revenue recognition and is based on the principle that revenue should be recognized to depict the transfer of goods or services to a customer at an amount that reflects the consideration a company expects to receive in exchange for those goods or services. Schlumberger is required to adopt this ASU on January 1, 2017 and does not expect this ASU to have a material impact on its consolidated financial statements.

Charges and Credits

3 Months Ended

Mar. 31, 2015

Restructuring And Related Activities [Abstract]

Charges and Credits

2. Charges and Credits

Schlumberger recorded the following charges and credits in continuing operations during the first quarter of 2015:

As a result of the severe fall in activity in North America combined with the impact of lower international activity due to customer budget cuts driven by lower oil prices, Schlumberger decided to further reduce its headcount during the first quarter of 2015. Schlumberger recorded a $390 million charge during the first quarter associated with this headcount reduction as well as an incentivized leave of absence program.

During 2014, Venezuela enacted certain changes to its foreign exchange system such that, in addition to the official rate of 6.3 Venezuelan Bolivares per US dollar, there were two other legal exchange rates that could be obtained via different exchange rate mechanisms. These changes included the expansion of the SICAD I auction rate and the introduction of what was known as the SICAD II auction process. The SICAD I and SICAD II exchange rates were approximately 11 and 50 Venezuelan Bolivares to the US dollar, respectively, at December 31, 2014.

Although the functional currency of Schlumberger’s operations in Venezuela is the US dollar, a portion of the transactions are denominated in local currency. Prior to December 31, 2014, Schlumberger had historically applied the official exchange rate to remeasure local currency transactions and balances into US dollars.

Effective December 31, 2014, Schlumberger concluded that it was appropriate to apply the SICAD II exchange rate as it believed this rate best represented the economics of Schlumberger’s business activity in Venezuela. As a result, Schlumberger recorded a $472 million devaluation charge during the fourth quarter of 2014.

In February 2015, the Venezuelan government replaced SICAD II with a new foreign exchange market system known as SIMADI. The SIMADI exchange rate was approximately 192 Venezuela Bolivares to the US dollar as of March 31, 2015. As a result, Schlumberger recorded a $49 million devaluation charge during the first quarter of 2015, reflecting the adoption of the SIMADI exchange rate.

These changes result in a reduction in the US dollar reported amount of local currency denominated revenues, expenses and, consequently, income before taxes and net income in Venezuela. For example, if Schlumberger had applied an exchange rate of 192 Venezuelan Bolivares to the US dollar throughout 2014, it would have reduced Schlumberger earnings by approximately $0.09 per share.

The following is a summary of these charges:

	(Stated in millions)
	Pretax		Tax		Net		Classification
Workforce reduction	$	390		56	$	334	Restructuring & other
Currency devaluation loss in Venezuela		49		—		49	Restructuring & other
	$	439	$	56	$	383

There were no charges or credits recorded during the first quarter of 2014.

Earnings Per Share

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Earnings Per Share

3. Earnings Per Share

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

	(Stated in millions, except per share amounts)
	2015						2014
	Schlumberger Net Income		Average Shares Outstanding		Earnings per Share		Schlumberger Net Income		Average Shares Outstanding		Earnings per Share
First Quarter
Basic	$	975		1,276	$	0.76	$	1,592		1,306	$	1.22
Assumed exercise of stock options		—		5				—		8
Unvested restricted stock		—		4				—		4
Diluted	$	975		1,285	$	0.76	$	1,592		1,318	$	1.21

The number of outstanding options to purchase shares of Schlumberger common stock which 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)
	2015		2014
First Quarter		16		1

Inventories

3 Months Ended

Mar. 31, 2015

Inventory Disclosure [Abstract]

Inventories

4. Inventories

A summary of inventories follows:

(Stated in millions)
	Mar. 31,		Dec. 31,
	2015		2014
Raw materials & field materials	$	2,835	$	2,666
Work in process		240		273
Finished goods		1,591		1,689
	$	4,666	$	4,628

Fixed Assets

3 Months Ended

Mar. 31, 2015

Property Plant And Equipment [Abstract]

Fixed Assets

5. Fixed Assets

A summary of fixed assets follows:

(Stated in millions)
	Mar. 31,		Dec. 31,
	2015		2014
Property, plant & equipment	$	37,174	$	36,964
Less: Accumulated depreciation		22,039		21,568
	$	15,135	$	15,396

Depreciation expense relating to fixed assets was $827 million and $793 million in the first quarter of 2015 and 2014, respectively.

Multiclient Seismic Data

3 Months Ended

Mar. 31, 2015

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, 2015 was as follows:

(Stated in millions)

Balance at December 31, 2014	$	793
Capitalized in period		101
Charged to expense		(44	)
Balance at March 31, 2015	$	850

Goodwill

3 Months Ended

Mar. 31, 2015

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill

7. Goodwill

The changes in the carrying amount of goodwill by reporting unit for the three months ended March 31, 2015 were as follows:

	(Stated in millions)
	Reservoir
	Characterization			Drilling			Production			Total
Balance at December 31, 2014	$	3,812		$	8,488		$	3,187		$	15,487
Acquisitions		—			31			20			51
Impact of changes in exchange rates		(11	)		(7	)		(8	)		(26	)
Balance at March 31, 2015	$	3,801		$	8,512		$	3,199		$	15,512

Intangible Assets

3 Months Ended

Mar. 31, 2015

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)
	Mar. 31, 2015						Dec. 31, 2014
	Gross		Accumulated		Net Book		Gross		Accumulated		Net Book
	Book Value		Amortization		Value		Book Value		Amortization		Value
Technology/Technical Know-How	$	1,744	$	568	$	1,176	$	1,747	$	535	$	1,212
Tradenames		1,640		335		1,305		1,641		319		1,322
Customer Relationships		2,530		555		1,975		2,531		523		2,008
Other		377		258		119		380		268		112
	$	6,291	$	1,716	$	4,575	$	6,299	$	1,645	$	4,654

Amortization expense charged to income was $88 million during the first quarter of 2015 and $86 million during the first quarter of 2014.

Based on the net book value of intangible assets at March 31, 2015, amortization charged to income for the subsequent five years is estimated to be: remaining three quarters of 2015—$270 million; 2016—$351 million; 2017—$342 million; 2018—$331 million; 2019—$323 million; and 2020—$302 million.

Long-term Debt

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Long-term Debt

9. Long-term Debt

A summary of Long-term Debt follows:

(Stated in millions)
	Mar. 31,		Dec. 31,
	2015		2014
3.30% Senior Notes due 2021	$	1,597	$	1,597
3.65% Senior Notes due 2023		1,496		1,495
1.95% Senior Notes due 2016		1,100		1,100
4.20% Senior Notes due 2021		1,100		1,100
1.25% Senior Notes due 2017		1,000		1,000
2.40% Senior Notes due 2022		999		999
1.50% Guaranteed Notes due 2019		561		628
2.65% Senior Notes due 2016		—		500
Commercial paper borrowings		444		1,538
Other		601		608
	$	8,898	$	10,565

The estimated fair value of Schlumberger’s Long-term Debt at March 31, 2015 and December 31, 2014, based on quoted market prices, was $9.2 billion and $10.7 billion, respectively.

Borrowings under the commercial paper program at March 31, 2015 were $2.0 billion, of which $1.6 billion is classified within Long-term debt – current portion in the Consolidated Balance Sheet. At December 31, 2014, borrowings under the commercial paper program were $1.5 billion, all of which were classified within Long-term debt in the Consolidated Balance Sheet.

Derivative Instruments and Hedging Activities

3 Months Ended

Mar. 31, 2015

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 and occasionally interest rate swaps to mitigate the exposure to changes in interest rates.

During the fourth quarter of 2013, Schlumberger entered into a cross currency swap for a notional amount of €0.5 billion in order to hedge changes in the fair value of Schlumberger’s €0.5 billion 1.50% Guaranteed Notes due 2019. Under the terms of this swap, Schlumberger will receive interest at a fixed rate of 1.50% on the euro notional amount and pay interest at a floating rate of three-month LIBOR plus approximately 64 basis points on the US dollar notional amount.

This cross currency swap is designated as a fair value hedge of the underlying debt. This derivative instrument is marked to market with gains and losses recognized in income to largely offset the respective gains and losses recognized on changes in the fair value of the hedged debt.

At March 31, 2015, Schlumberger had fixed rate debt aggregating $8.9 billion and variable rate debt aggregating $3.8 billion, after taking into account the effect of the swap.

Short-term investments and Fixed income investments, held to maturity, totaled $5.1 billion at March 31, 2015. The carrying value of these investments approximated fair value, which was estimated using quoted market prices for those or similar investments.

Foreign Currency Exchange Rate Risk

As a multinational company, Schlumberger conducts its business in approximately 85 countries. Schlumberger’s functional currency is primarily the US dollar. However, outside the United States, a significant portion of Schlumberger’s expenses is 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 is also exposed to risks on future cash flows relating to certain of its fixed rate debt which is denominated in currencies other than the functional currency. Schlumberger uses foreign currency forward contracts and foreign currency options to provide a hedge against a portion of these cash flow risks. These contracts are accounted for as cash flow hedges, with the effective portion of 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. The ineffective portion of changes in the fair value of hedging instruments, if any, is recorded directly to earnings.

At March 31, 2015, Schlumberger recognized a cumulative net $130 million loss in Accumulated other comprehensive loss relating to revaluation of foreign currency forward contracts and foreign currency options designated as cash flow hedges, the majority of which is expected to be reclassified into earnings within the next 12 months.

Schlumberger is exposed to changes in the fair value of assets and liabilities which 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 as are changes in fair value of the hedged item.

At March 31, 2015, contracts were outstanding for the US dollar equivalent of $6.3 billion in various foreign currencies, of which $2.5 billion relate to hedges of debt denominated in currencies other than the functional currency.

The fair values of outstanding derivative instruments were as follows:

	(Stated in millions)
	Fair Value of Derivatives				Consolidated Balance Sheet Classification
	Mar. 31,		Dec. 31,
	2015		2014
Derivative Assets
Derivatives designated as hedges:
Foreign exchange contracts	$	3	$	3	Other current assets
Foreign exchange contracts		34		32	Other Assets
	$	37	$	35

Derivatives not designated as hedges:
Foreign exchange contracts	$	22	$	5	Other current assets
	$	59	$	40
Derivative Liabilities
Derivatives designated as hedges:
Foreign exchange contracts	$	115	$	80	Accounts payable and accrued liabilities
Foreign exchange contracts		138		105	Other Liabilities
Cross currency swap		60		42	Other Liabilities
	$	313	$	227

Derivatives not designated as hedges:
Foreign exchange contracts	$	43	$	28	Accounts payable and accrued liabilities
	$	356	$	255

The fair value of all outstanding derivatives was determined using a model with inputs that are observable in the market or that can be derived from or corroborated by observable data.

The effect of derivative instruments designated as fair value hedges and those not designated as hedges on the Consolidated Statement of Income was as follows:

		(Stated in millions)
	Gain (Loss) Recognized in Income
	First Quarter
		2015			2014		Consolidated Statement of Income Classification
Derivatives designated as fair value hedges:
Cross currency swap	$	(70	)	$	(1	)	Interest expense

Derivatives not designated as hedges:
Foreign exchange contracts	$	(118	)	$	13		Cost of revenue

- Definition

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=35706170&loc=d3e41620-113959

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579240-113959

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4D
-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624177-113959

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80784-113994

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=35706170&loc=d3e41641-113959

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Income Taxes

3 Months Ended

Mar. 31, 2015

Income Tax Disclosure [Abstract]

Income Taxes

11. Income Taxes

Income before taxes subject to US and non-US income taxes was as follows:

(Stated in millions)
	First Quarter
	2015			2014
United States	$	165	$	524
Outside United States		1,129		1,553
	$	1,294	$	2,077

Schlumberger recorded pretax charges of $439 million during the three months ended March 31, 2015 ($93 million of charges in the US and $346 million of charges outside the US). See Note 2 – Charges and Credits.

The components of net deferred tax assets (liabilities) were as follows:

(Stated in millions)
	Mar. 31,			Dec. 31,
	2015			2014
Postretirement benefits	$	314		$	327
Intangible assets		(1,484	)		(1,435	)
Investments in non-US subsidiaries		(225	)		(227	)
Other, net		188			183
	$	(1,207	)	$	(1,152	)

The above deferred tax balances at March 31, 2015 and December 31, 2014 were net of valuation allowances relating to net operating losses in certain countries of $172 million and $190 million, respectively.

The components of consolidated Taxes on income were as follows:

(Stated in millions)
	First Quarter
		2015			2014
Current:
United States-Federal	$	75		$	147
United States-State		5			7
Outside United States		248			336
	$	328		$	490
Deferred:
United States-Federal	$	(26	)	$	7
United States-State		—			(1	)
Outside United States		4			(27	)
	$	(22	)	$	(21	)
	$	306		$	469

A reconciliation of the US statutory federal tax rate of 35% to the consolidated effective income tax rate follows:

	First Quarter
		2015		2014
US federal statutory rate		35	%	35	%
Non-US income taxed at different rates		(12	)	(11	)
Charges and credits (See Note 2)		3		—
Other		(2	)	(1	)
		24	%	23	%

Contingencies	3 Months Ended
Contingencies	Mar. 31, 2015
Commitments And Contingencies Disclosure [Abstract]
Contingencies	12. Contingencies On March 25, 2015, Schlumberger resolved a previously disclosed investigation by the U.S. Department of Justice into past violations of US sanctions regarding its historical operations in Iran and Sudan that occurred between 2004 and 2010. A non-US subsidiary of Schlumberger has agreed to plead guilty to one criminal count of conspiracy to violate the International Emergency Economic Powers Act. Under the terms of the plea agreement, Schlumberger will pay a total amount of approximately $233 million in fines, penalties and assessments. This amount, which has been previously accrued for, is expected to be paid during the second quarter of 2015 and will be reflected within Cash flow used in discontinued operations – operating activities in Schlumberger’s Consolidated Statement of Cash Flows when paid. All terms of the plea agreement are subject to judicial approval. Schlumberger and its subsidiaries are party to various other 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 these other legal proceedings is remote. However, litigation is inherently uncertain and it is not possible to predict the ultimate disposition of any of these proceedings.

- Definition

The entire disclosure for loss and gain contingencies. Describes any existing condition, situation, or set of circumstances involving uncertainty as of the balance sheet date (or prior to issuance of the financial statements) as to a probable or reasonably possible loss incurred by an entity that will ultimately be resolved when one or more future events occur or fail to occur, and typically discloses the amount of loss recorded or a range of possible loss, or an assertion that no reasonable estimate can be made.

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+ Details

Segment Information

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Segment Information

13. Segment Information

	(Stated in millions)
	First Quarter 2015						First Quarter 2014
	Revenue			Income before taxes			Revenue			Income before taxes
Reservoir Characterization	$	2,550		$	655		$	2,979		$	792
Drilling		3,963			790			4,331			881
Production		3,769			549			3,989			724
Eliminations & other		(34	)		(1	)		(60	)		(29	)
Pretax operating income					1,993						2,368
Corporate & other ⁽¹⁾					(192	)					(201	)
Interest income ⁽²⁾					8						7
Interest expense ⁽³⁾					(76	)					(97	)
Charges and credits ⁽⁴⁾					(439	)					—
	$	10,248		$	1,294		$	11,239		$	2,077

⁽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 ($5 million in 2015; $5 million in 2014).

⁽³⁾ Interest expense excludes amounts which are included in the segments’ income ($6 million in 2015; $6 million in 2014).

⁽⁴⁾ Charges and credits recorded during the first quarter of 2015 are described in detail in Note 2 to the Consolidated Financial Statements.

- 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

3 Months Ended

Mar. 31, 2015

Compensation And Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefit Plans

14. Pension and Other Postretirement Benefit Plans

Net pension cost for the Schlumberger pension plans included the following components:

(Stated in millions)
	First Quarter
	2015						2014
	US			Int’l			US			Int’l
Service cost — benefits earned during period	$	22		$	49		$	19		$	31
Interest cost on projected benefit obligation		41			74			41			72
Expected return on plan assets		(56	)		(128	)		(52	)		(113	)
Amortization of prior service cost		5			30			3			30
Amortization of net loss		31			38			20			20
	$	43		$	63		$	31		$	40

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

(Stated in millions)
	First Quarter
	2015			2014
Service cost — benefits earned during period	$	11		$	11
Interest cost on accumulated postretirement benefit obligation		13			15
Expected return on plan assets		(13	)		(11	)
Amortization of prior service credit		(8	)		(1	)
Amortization of net loss		5			1
	$	8		$	15

Accumulated Other Comprehensive Loss

3 Months Ended

Mar. 31, 2015

Equity [Abstract]

Accumulated Other Comprehensive Loss

15. Accumulated Other Comprehensive Loss

Accumulated Other Comprehensive Loss consists of the following:

	(Stated in millions)
							Pension and			Unrealized
	Currency						Other			Gain/(Loss) on
	Translation			Cash Flow			Postretirement			Marketable
	Adjustments			Hedges			Benefit Plans			Securities			Total
Balance, January 1, 2015	$	(1,531	)	$	(96	)	$	(2,589	)	$	10		$	(4,206	)
Other comprehensive loss before reclassifications		(113	)		(152	)		—			(18	)		(283	)
Amounts reclassified from accumulated other comprehensive loss		—			118			101			—			219
Income taxes		—			—			(15	)		—			(15	)
Net other comprehensive income (loss)		(113	)		(34	)		86			(18	)		(79	)
Balance, March 31, 2015	$	(1,644	)	$	(130	)	$	(2,503	)	$	(8	)	$	(4,285	)

	(Stated in millions)
							Pension and			Unrealized
	Currency						Other			Gain on
	Translation			Cash Flow			Postretirement			Marketable
	Adjustments			Hedges			Benefit Plans			Securities		Total
Balance, January 1, 2014	$	(1,068	)	$	29		$	(1,691	)	$	176	$	(2,554	)
Other comprehensive income (loss) before reclassifications		(88	)		16			—			11		(61	)
Amounts reclassified from accumulated other comprehensive loss		—			(3	)		73			—		70
Income taxes		—			—			(10	)		—		(10	)
Net other comprehensive income (loss)		(88	)		13			63			11		(1	)
Balance, March 31, 2014	$	(1,156	)	$	42		$	(1,628	)	$	187	$	(2,555	)

- Definition

The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.

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+ Details

Basis of Presentation (Policies)	3 Months Ended
Basis of Presentation (Policies)	Mar. 31, 2015
Organization Consolidation And Presentation Of Financial Statements [Abstract]
New Accounting Pronouncement	New Accounting Pronouncement In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers. This ASU amends the existing accounting standards for revenue recognition and is based on the principle that revenue should be recognized to depict the transfer of goods or services to a customer at an amount that reflects the consideration a company expects to receive in exchange for those goods or services. Schlumberger is required to adopt this ASU on January 1, 2017 and does not expect this ASU to have a material impact on its consolidated financial statements.

Charges and Credits (Tables)

3 Months Ended

Mar. 31, 2015

Restructuring And Related Activities [Abstract]

Summary of the Charges

The following is a summary of these charges:

	(Stated in millions)
	Pretax		Tax		Net		Classification
Workforce reduction	$	390		56	$	334	Restructuring & other
Currency devaluation loss in Venezuela		49		—		49	Restructuring & other
	$	439	$	56	$	383

Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Reconciliation of Earnings Per Share

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

	(Stated in millions, except per share amounts)
	2015						2014
	Schlumberger Net Income		Average Shares Outstanding		Earnings per Share		Schlumberger Net Income		Average Shares Outstanding		Earnings per Share
First Quarter
Basic	$	975		1,276	$	0.76	$	1,592		1,306	$	1.22
Assumed exercise of stock options		—		5				—		8
Unvested restricted stock		—		4				—		4
Diluted	$	975		1,285	$	0.76	$	1,592		1,318	$	1.21

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

(Stated in millions)
	2015		2014
First Quarter		16		1

Inventories (Tables)

3 Months Ended

Mar. 31, 2015

Inventory Disclosure [Abstract]

Inventory Disclosure

A summary of inventories follows:

(Stated in millions)
	Mar. 31,		Dec. 31,
	2015		2014
Raw materials & field materials	$	2,835	$	2,666
Work in process		240		273
Finished goods		1,591		1,689
	$	4,666	$	4,628

Fixed Assets (Tables)

3 Months Ended

Mar. 31, 2015

Property Plant And Equipment [Abstract]

Property, Plant and Equipment

A summary of fixed assets follows:

(Stated in millions)
	Mar. 31,		Dec. 31,
	2015		2014
Property, plant & equipment	$	37,174	$	36,964
Less: Accumulated depreciation		22,039		21,568
	$	15,135	$	15,396

Multiclient Seismic Data (Tables)

3 Months Ended

Mar. 31, 2015

Multiclient Seismic Data [Abstract]

Multiclient Seismic Data

The change in the carrying amount of multiclient seismic data for the three months ended March 31, 2015 was as follows:

(Stated in millions)

Balance at December 31, 2014	$	793
Capitalized in period		101
Charged to expense		(44	)
Balance at March 31, 2015	$	850

Goodwill (Tables)

3 Months Ended

Mar. 31, 2015

Goodwill And Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill by reporting unit for the three months ended March 31, 2015 were as follows:

	(Stated in millions)
	Reservoir
	Characterization			Drilling			Production			Total
Balance at December 31, 2014	$	3,812		$	8,488		$	3,187		$	15,487
Acquisitions		—			31			20			51
Impact of changes in exchange rates		(11	)		(7	)		(8	)		(26	)
Balance at March 31, 2015	$	3,801		$	8,512		$	3,199		$	15,512

Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2015

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, 2015						Dec. 31, 2014
	Gross		Accumulated		Net Book		Gross		Accumulated		Net Book
	Book Value		Amortization		Value		Book Value		Amortization		Value
Technology/Technical Know-How	$	1,744	$	568	$	1,176	$	1,747	$	535	$	1,212
Tradenames		1,640		335		1,305		1,641		319		1,322
Customer Relationships		2,530		555		1,975		2,531		523		2,008
Other		377		258		119		380		268		112
	$	6,291	$	1,716	$	4,575	$	6,299	$	1,645	$	4,654

Long-term Debt (Tables)

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Long-term Debt

A summary of Long-term Debt follows:

(Stated in millions)
	Mar. 31,		Dec. 31,
	2015		2014
3.30% Senior Notes due 2021	$	1,597	$	1,597
3.65% Senior Notes due 2023		1,496		1,495
1.95% Senior Notes due 2016		1,100		1,100
4.20% Senior Notes due 2021		1,100		1,100
1.25% Senior Notes due 2017		1,000		1,000
2.40% Senior Notes due 2022		999		999
1.50% Guaranteed Notes due 2019		561		628
2.65% Senior Notes due 2016		—		500
Commercial paper borrowings		444		1,538
Other		601		608
	$	8,898	$	10,565

- 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://www.xbrl.org/2003/role/presentationRef
-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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

+ Details

Derivative Instruments and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2015

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Fair Values of Outstanding Derivative Instruments

The fair values of outstanding derivative instruments were as follows:

	(Stated in millions)
	Fair Value of Derivatives				Consolidated Balance Sheet Classification
	Mar. 31,		Dec. 31,
	2015		2014
Derivative Assets
Derivatives designated as hedges:
Foreign exchange contracts	$	3	$	3	Other current assets
Foreign exchange contracts		34		32	Other Assets
	$	37	$	35

Derivatives not designated as hedges:
Foreign exchange contracts	$	22	$	5	Other current assets
	$	59	$	40
Derivative Liabilities
Derivatives designated as hedges:
Foreign exchange contracts	$	115	$	80	Accounts payable and accrued liabilities
Foreign exchange contracts		138		105	Other Liabilities
Cross currency swap		60		42	Other Liabilities
	$	313	$	227

Derivatives not designated as hedges:
Foreign exchange contracts	$	43	$	28	Accounts payable and accrued liabilities
	$	356	$	255

Effect of Derivative Instruments Designated as Fair Value Hedges and Not Designated as Hedges on Consolidated Statement of Income

The effect of derivative instruments designated as fair value hedges and those not designated as hedges on the Consolidated Statement of Income was as follows:

		(Stated in millions)
	Gain (Loss) Recognized in Income
	First Quarter
		2015			2014		Consolidated Statement of Income Classification
Derivatives designated as fair value hedges:
Cross currency swap	$	(70	)	$	(1	)	Interest expense

Derivatives not designated as hedges:
Foreign exchange contracts	$	(118	)	$	13		Cost of revenue

Income Taxes (Tables)

3 Months Ended

Mar. 31, 2015

Income Tax Disclosure [Abstract]

Income Before Taxes

Income before taxes subject to US and non-US income taxes was as follows:

(Stated in millions)
	First Quarter
	2015			2014
United States	$	165	$	524
Outside United States		1,129		1,553
	$	1,294	$	2,077

Components of Net Deferred Tax Assets (Liabilities)

The components of net deferred tax assets (liabilities) were as follows:

(Stated in millions)
	Mar. 31,			Dec. 31,
	2015			2014
Postretirement benefits	$	314		$	327
Intangible assets		(1,484	)		(1,435	)
Investments in non-US subsidiaries		(225	)		(227	)
Other, net		188			183
	$	(1,207	)	$	(1,152	)

Components of Consolidated Income Taxes

The components of consolidated Taxes on income were as follows:

(Stated in millions)
	First Quarter
		2015			2014
Current:
United States-Federal	$	75		$	147
United States-State		5			7
Outside United States		248			336
	$	328		$	490
Deferred:
United States-Federal	$	(26	)	$	7
United States-State		—			(1	)
Outside United States		4			(27	)
	$	(22	)	$	(21	)
	$	306		$	469

Reconciliation of US Statutory Federal Tax Rate

A reconciliation of the US statutory federal tax rate of 35% to the consolidated effective income tax rate follows:

	First Quarter
		2015		2014
US federal statutory rate		35	%	35	%
Non-US income taxed at different rates		(12	)	(11	)
Charges and credits (See Note 2)		3		—
Other		(2	)	(1	)
		24	%	23	%

Segment Information (Tables)

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

	(Stated in millions)
	First Quarter 2015						First Quarter 2014
	Revenue			Income before taxes			Revenue			Income before taxes
Reservoir Characterization	$	2,550		$	655		$	2,979		$	792
Drilling		3,963			790			4,331			881
Production		3,769			549			3,989			724
Eliminations & other		(34	)		(1	)		(60	)		(29	)
Pretax operating income					1,993						2,368
Corporate & other ⁽¹⁾					(192	)					(201	)
Interest income ⁽²⁾					8						7
Interest expense ⁽³⁾					(76	)					(97	)
Charges and credits ⁽⁴⁾					(439	)					—
	$	10,248		$	1,294		$	11,239		$	2,077

⁽²⁾ Interest income excludes amounts which are included in the segments’ income ($5 million in 2015; $5 million in 2014).

⁽³⁾ Interest expense excludes amounts which are included in the segments’ income ($6 million in 2015; $6 million in 2014).

⁽⁴⁾ Charges and credits recorded during the first quarter of 2015 are described in detail in Note 2 to the Consolidated Financial Statements.

Pension and Other Postretirement Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2015

Compensation And Retirement Disclosure [Abstract]

Net Pension Cost for Schlumberger Pension Plans and US Postretirement Medical Plan

Net pension cost for the Schlumberger pension plans included the following components:

(Stated in millions)
	First Quarter
	2015						2014
	US			Int’l			US			Int’l
Service cost — benefits earned during period	$	22		$	49		$	19		$	31
Interest cost on projected benefit obligation		41			74			41			72
Expected return on plan assets		(56	)		(128	)		(52	)		(113	)
Amortization of prior service cost		5			30			3			30
Amortization of net loss		31			38			20			20
	$	43		$	63		$	31		$	40

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

(Stated in millions)
	First Quarter
	2015			2014
Service cost — benefits earned during period	$	11		$	11
Interest cost on accumulated postretirement benefit obligation		13			15
Expected return on plan assets		(13	)		(11	)
Amortization of prior service credit		(8	)		(1	)
Amortization of net loss		5			1
	$	8		$	15

Accumulated Other Comprehensive Loss (Tables)

3 Months Ended

Mar. 31, 2015

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Loss

Accumulated Other Comprehensive Loss consists of the following:

	(Stated in millions)
							Pension and			Unrealized
	Currency						Other			Gain/(Loss) on
	Translation			Cash Flow			Postretirement			Marketable
	Adjustments			Hedges			Benefit Plans			Securities			Total
Balance, January 1, 2015	$	(1,531	)	$	(96	)	$	(2,589	)	$	10		$	(4,206	)
Other comprehensive loss before reclassifications		(113	)		(152	)		—			(18	)		(283	)
Amounts reclassified from accumulated other comprehensive loss		—			118			101			—			219
Income taxes		—			—			(15	)		—			(15	)
Net other comprehensive income (loss)		(113	)		(34	)		86			(18	)		(79	)
Balance, March 31, 2015	$	(1,644	)	$	(130	)	$	(2,503	)	$	(8	)	$	(4,285	)

	(Stated in millions)
							Pension and			Unrealized
	Currency						Other			Gain on
	Translation			Cash Flow			Postretirement			Marketable
	Adjustments			Hedges			Benefit Plans			Securities		Total
Balance, January 1, 2014	$	(1,068	)	$	29		$	(1,691	)	$	176	$	(2,554	)
Other comprehensive income (loss) before reclassifications		(88	)		16			—			11		(61	)
Amounts reclassified from accumulated other comprehensive loss		—			(3	)		73			—		70
Income taxes		—			—			(10	)		—		(10	)
Net other comprehensive income (loss)		(88	)		13			63			11		(1	)
Balance, March 31, 2014	$	(1,156	)	$	42		$	(1,628	)	$	187	$	(2,555	)

Charges and Credits - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2015 USD ($) / $	Dec. 31, 2014 USD ($) / $	Mar. 31, 2014 USD ($)
Charges And Credits [Line Items]
Restructuring and other charges \| $	$ 439		$ 0
Exchange rate	192
Foreign currency transactions, description	These changes result in a reduction in the US dollar reported amount of local currency denominated revenues, expenses and, consequently, income before taxes and net income in Venezuela. For example, if Schlumberger had applied an exchange rate of 192 Venezuelan Bolivares to the US dollar throughout 2014, it would have reduced Schlumberger earnings by approximately $0.09 per share.
Venezuela Bolivar Official Currency Exchange Rate To Dollar
Charges And Credits [Line Items]
Exchange rate		6.3
Venezuela Bolivar Official Currency Exchange Rate To Dollar \| SICAD I
Charges And Credits [Line Items]
Exchange rate, approximated		11
Venezuela Bolivar Official Currency Exchange Rate To Dollar \| SICAD II
Charges And Credits [Line Items]
Exchange rate, approximated		50
Workforce reduction
Charges And Credits [Line Items]
Restructuring and other charges \| $	$ 390
Currency Devaluation Loss In Venezuela
Charges And Credits [Line Items]
Restructuring and other charges \| $	$ 49	$ 472

Charges and Credits - Summary of Charges (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Investment In Joint Venture [Line Items]
Restructuring and other charges	$ 439		$ 0
Restructuring and other charges, tax	56
Restructuring and other charges, net	383
Workforce reduction
Investment In Joint Venture [Line Items]
Restructuring and other charges	390
Restructuring and other charges, tax	56
Restructuring and other charges, net	334
Currency Devaluation Loss In Venezuela
Investment In Joint Venture [Line Items]
Restructuring and other charges	49	$ 472
Restructuring and other charges, net	$ 49

Earnings Per Share - Reconciliation of Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Basic	$ 975	$ 1,592
Diluted	$ 975	$ 1,592
Basic	1,276	1,306
Assumed exercise of stock options	5	8
Unvested restricted stock	4	4
Diluted	1,285	1,318
Basic	$ 0.76	$ 1.22
Diluted	$ 0.76	$ 1.21

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References + Details

Earnings Per Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail) - shares shares in Millions	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount	16	1

Inventories - Inventory Disclosure (Detail) - USD ($) $ in Millions	Mar. 31, 2015	Dec. 31, 2014
Inventory Disclosure [Abstract]
Raw materials & field materials	$ 2,835	$ 2,666
Work in process	240	273
Finished goods	1,591	1,689
Inventories	$ 4,666	$ 4,628

Fixed Assets - Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Mar. 31, 2015	Dec. 31, 2014
Property Plant And Equipment [Abstract]
Property, plant & equipment	$ 37,174	$ 36,964
Less: Accumulated depreciation	22,039	21,568
Fixed assets less accumulated depreciation	$ 15,135	$ 15,396

Fixed Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Property Plant And Equipment [Abstract]
Depreciation expense relating to fixed assets	$ 827	$ 793

Multiclient Seismic Data - Multiclient Seismic Data Table (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2015 USD ($)
Goodwill Abstract
Opening balance	$ 793
Capitalized in period	101
Charged to expense	(44)
Ending balance	$ 850

Goodwill - Changes in Carrying Amount of Goodwill (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2015 USD ($)
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 15,487
Acquisitions	51
Impact of changes in exchange rates	(26)
Goodwill, Ending Balance	15,512
Operating Segments \| Reservoir Characterization
Goodwill [Line Items]
Goodwill, Beginning Balance	3,812
Impact of changes in exchange rates	(11)
Goodwill, Ending Balance	3,801
Operating Segments \| Drilling
Goodwill [Line Items]
Goodwill, Beginning Balance	8,488
Acquisitions	31
Impact of changes in exchange rates	(7)
Goodwill, Ending Balance	8,512
Operating Segments \| Production
Goodwill [Line Items]
Goodwill, Beginning Balance	3,187
Acquisitions	20
Impact of changes in exchange rates	(8)
Goodwill, Ending Balance	$ 3,199

Intangible Assets - Schedule of Intangible Assets by Major Class (Detail) - USD ($) $ in Millions	Mar. 31, 2015	Dec. 31, 2014
Finite Lived Intangible Assets [Line Items]
Gross Book Value	$ 6,291	$ 6,299
Accumulated Amortization	1,716	1,645
Net Book Value	4,575	4,654
Technology/Technical Know-How
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,744	1,747
Accumulated Amortization	568	535
Net Book Value	1,176	1,212
Tradenames
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,640	1,641
Accumulated Amortization	335	319
Net Book Value	1,305	1,322
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross Book Value	2,530	2,531
Accumulated Amortization	555	523
Net Book Value	1,975	2,008
Other
Finite Lived Intangible Assets [Line Items]
Gross Book Value	377	380
Accumulated Amortization	258	268
Net Book Value	$ 119	$ 112

Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense	$ 88	$ 86
Estimated amortization charged to income, remaining three quarters of 2015	270
Estimated amortization charged to income, 2016	351
Estimated amortization charged to income, 2017	342
Estimated amortization charged to income, 2018	331
Estimated amortization charged to income, 2019	323
Estimated amortization charged to income, 2020	$ 302

Long-term Debt - Long-term Debt (Detail) - USD ($) $ in Millions	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 8,898	$ 10,565
Commercial paper borrowings
Debt Instrument [Line Items]
Long-term debt, carrying amount	444	1,538
3.30% Senior Notes due 2021
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,597	1,597
3.65% Senior Notes due 2023
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,496	1,495
1.95% Senior Notes due 2016
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,100	1,100
4.20% Senior Notes due 2021
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,100	1,100
1.25% Senior Notes due 2017
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,000	1,000
2.40% Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt, carrying amount	999	999
1.50% Guaranteed Notes due 2019
Debt Instrument [Line Items]
Long-term debt, carrying amount	561	628
2.65% Senior Notes due 2016
Debt Instrument [Line Items]
Long-term debt, carrying amount		500
Other
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 601	$ 608

Long-term Debt - Long-term Debt (Parenthetical) (Detail)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
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
1.95% Senior Notes due 2016
Debt Instrument [Line Items]
Debt instrument interest rate	1.95%	1.95%
Debt instrument maturity date	2016	2016
4.20% Senior Notes due 2021
Debt Instrument [Line Items]
Debt instrument interest rate	4.20%	4.20%
Debt instrument maturity date	2021	2021
1.25% Senior Notes due 2017
Debt Instrument [Line Items]
Debt instrument interest rate	1.25%	1.25%
Debt instrument maturity date	2017	2017
2.40% Senior Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate	2.40%	2.40%
Debt instrument maturity date	2022	2022
1.50% Guaranteed Notes due 2019
Debt Instrument [Line Items]
Debt instrument interest rate	1.50%	1.50%
Debt instrument maturity date	2019	2019
2.65% Senior Notes due 2016
Debt Instrument [Line Items]
Debt instrument interest rate	2.65%	2.65%
Debt instrument maturity date	2016	2016

Long-term Debt - Additional Information (Detail) - USD ($) $ in Millions	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Long-term debt, fair value	$ 9,200	$ 10,700
Long-term debt - current portion	3,180	1,244
Commercial paper borrowings
Debt Instrument [Line Items]
Long-term debt	2,000	$ 1,500
Long-term debt - current portion	$ 1,600

Derivative Instruments and Hedging Activities - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015 USD ($) Country	Dec. 31, 2014	Dec. 31, 2013 EUR (€)
Derivative [Line Items]
Fixed rate debt aggregate, after taking into account the effects of the interest rate swaps	$ 8,900,000,000
Variable rate debt aggregate, after taking into account the effects of the interest rate swaps	3,800,000,000
Short-term investments and fixed income investments, held to maturity	$ 5,100,000,000
Number of countries in which Schlumberger conducts business \| Country	85
Recognized a cumulative net (loss) in Accumulated other comprehensive loss relating to revaluation of foreign currency forward contracts and foreign currency options designated as cash flow hedges	$ (130,000,000)
1.50% Guaranteed Notes due 2019
Derivative [Line Items]
Guaranteed notes face amount \| €			€ 500,000,000
Cross currency swap
Derivative [Line Items]
Notional amount of interest rate swap \| €			€ 500,000,000
Fixed Rate Debt \| 1.50% Guaranteed Notes due 2019
Derivative [Line Items]
Derivative swap interest rate			1.50%
Floating Rate Debt \| 1.50% Guaranteed Notes due 2019
Derivative [Line Items]
Floating interest rate on securities	three-month LIBOR plus approximately 64 basis points
Foreign exchange contracts
Derivative [Line Items]
Notional amount of interest rate swap	$ 6,300,000,000
Foreign exchange contracts \| Debt \| Derivatives designated as hedges
Derivative [Line Items]
Notional amount of interest rate swap	$ 2,500,000,000
London Interbank Offered Rate (LIBOR) \| Floating Rate Debt \| 1.50% Guaranteed Notes due 2019
Derivative [Line Items]
Basis point		0.64%

Derivative Instruments and Hedging Activities - Fair Values of Outstanding Derivative Instruments (Detail) - USD ($) $ in Millions	Mar. 31, 2015	Dec. 31, 2014
Derivative Assets
Derivative Assets	$ 59	$ 40
Derivatives designated as hedges
Derivative Assets
Derivative Assets	37	35
Derivative Liabilities
Derivative Liabilities	313	227
Derivatives not designated as hedges
Derivative Liabilities
Derivative Liabilities	356	255
Foreign exchange contracts \| Derivatives designated as hedges \| Other current assets
Derivative Assets
Derivative Assets	3	3
Foreign exchange contracts \| Derivatives designated as hedges \| Other Assets
Derivative Assets
Derivative Assets	34	32
Foreign exchange contracts \| Derivatives designated as hedges \| Accounts payable and accrued liabilities
Derivative Liabilities
Derivative Liabilities	115	80
Foreign exchange contracts \| Derivatives designated as hedges \| Other Liabilities
Derivative Liabilities
Derivative Liabilities	138	105
Foreign exchange contracts \| Derivatives not designated as hedges \| Other current assets
Derivative Assets
Derivative Assets	22	5
Foreign exchange contracts \| Derivatives not designated as hedges \| Accounts payable and accrued liabilities
Derivative Liabilities
Derivative Liabilities	43	28
Cross currency swap \| Derivatives designated as hedges \| Other Liabilities
Derivative Liabilities
Derivative Liabilities	$ 60	$ 42

Derivative Instruments and Hedging Activities - Effect of Derivative Instruments Designated as Fair Value Hedges and Not Designated as Hedges on Consolidated Statement of Income (Detail) - Cash Flow Hedging - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Derivatives designated as hedges \| Cross currency swap \| Interest expense
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ (70)	$ (1)
Derivatives not designated as hedges \| Foreign exchange contracts \| Cost of revenue
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ (118)	$ 13

Income Taxes - Income Before Taxes (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Income before taxes, United States	$ 165	$ 524
Income before taxes, Outside United States	1,129	1,553
Income before taxes	$ 1,294	$ 2,077

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Income Tax Disclosure [Line Items]
Restructuring and other charges	$ 439	$ 0
Deferred tax assets, valuation allowances relating to net operating losses in certain countries	$ 172		$ 190
US federal statutory rate	35.00%	35.00%
Domestic Country
Income Tax Disclosure [Line Items]
Restructuring and other charges	$ 93
Foreign Country
Income Tax Disclosure [Line Items]
Restructuring and other charges	$ 346

Income Taxes - Components of Net Deferred Tax Assets (Liabilities) (Detail) - USD ($) $ in Millions	Mar. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Postretirement benefits	$ 314	$ 327
Intangible assets	(1,484)	(1,435)
Investments in non-US subsidiaries	(225)	(227)
Other, net	188	183
Net deferred tax assets	$ (1,207)	$ (1,152)

Income Taxes - Components of Consolidated Income Taxes (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Current:
United States-Federal	$ 75	$ 147
United States-State	5	7
Outside United States	248	336
Current Income Tax Expense (Benefit), Total	328	490
Deferred:
United States-Federal	(26)	7
United States-State		(1)
Outside United States	4	(27)
Deferred income taxes	(22)	(21)
Consolidated taxes on income	$ 306	$ 469	$ 469

Income Taxes - Reconciliation of US Statutory Federal Tax Rate (Detail)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Disclosure Income Tax Reconciliation Of U S Statutory Federal Tax Rate Detail [Line Items]
US federal statutory rate	35.00%	35.00%
Non-US income taxed at different rates	(12.00%)	(11.00%)
Other	(2.00%)	(1.00%)
Effective income tax rate	24.00%	23.00%
Charges And Credits
Disclosure Income Tax Reconciliation Of U S Statutory Federal Tax Rate Detail [Line Items]
Charges and credits (See Note 2)	3.00%

Contingencies - Additional Information (Detail) $ in Millions	Mar. 25, 2015 USD ($)
Commitments And Contingencies Disclosure [Abstract]
Amount of fines, penalties and assessments	$ 233

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

3 Months Ended

Mar. 31, 2015

Mar. 31, 2014

Segment Reporting Information [Line Items]

Revenue

$ 10,248

$ 11,239

Income before taxes

1,294

2,077

Operating Segments | Reservoir Characterization

Segment Reporting Information [Line Items]

Revenue

2,550

2,979

Income before taxes

655

792

Operating Segments | Drilling

Segment Reporting Information [Line Items]

Revenue

3,963

4,331

Income before taxes

790

881

Operating Segments | Production

Segment Reporting Information [Line Items]

Revenue

3,769

3,989

Income before taxes

549

724

Eliminations & other

Segment Reporting Information [Line Items]

Revenue

(34)

(60)

Income before taxes

(1)

(29)

Corporate

Segment Reporting Information [Line Items]

Income before taxes

^[1]

(192)

(201)

Material Reconciling Items Interest Income

Segment Reporting Information [Line Items]

Income before taxes

^[2]

Material Reconciling Items Interest Expense

Segment Reporting Information [Line Items]

Income before taxes

^[3]

(76)

(97)

Pretax operating income

Segment Reporting Information [Line Items]

Income before taxes

1,993

$ 2,368

Charges And Credits

Segment Reporting Information [Line Items]

Income before taxes

^[4]

$ (439)

[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 ($5 million in 2015; $5 million in 2014).
[3]	Interest expense excludes amounts which are included in the segments’ income ($6 million in 2015; $6 million in 2014).
[4]	Charges and credits recorded during the first quarter of 2015 are described in detail in Note 2 to the Consolidated Financial Statements.

Segment Information - Schedule of Segment Reporting Information, by Segment (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Segment Reporting Information [Line Items]
Interest expense	$ 82	$ 103
Operating Segments
Segment Reporting Information [Line Items]
Interest income	5	5
Interest expense	$ 6	$ 6

Pension and Other Postretirement Benefit Plans - Net Pension Cost for Schlumberger Pension Plans and US Postretirement Medical Plan (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
US Plan Assets
Defined Benefit Plan Disclosure [Line Items]
Service cost — benefits earned during period	$ 22	$ 19
Interest cost on projected benefit obligation and on accumulated postretirement benefit obligation	41	41
Expected return on plan assets	(56)	(52)
Amortization of prior service cost	5	3
Amortization of net loss	31	20
Total pension cost	43	31
International
Defined Benefit Plan Disclosure [Line Items]
Service cost — benefits earned during period	49	31
Interest cost on projected benefit obligation and on accumulated postretirement benefit obligation	74	72
Expected return on plan assets	(128)	(113)
Amortization of prior service cost	30	30
Amortization of net loss	38	20
Total pension cost	63	40
Postretirement medical plan
Defined Benefit Plan Disclosure [Line Items]
Service cost — benefits earned during period	11	11
Interest cost on projected benefit obligation and on accumulated postretirement benefit obligation	13	15
Expected return on plan assets	(13)	(11)
Amortization of prior service cost	(8)	(1)
Amortization of net loss	5	1
Total pension cost	$ 8	$ 15

Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ (4,206)	$ (2,554)
Other comprehensive income (loss) before reclassifications	(283)	(61)
Amounts reclassified from accumulated other comprehensive loss	219	70
Income taxes	(15)	(10)
Net other comprehensive income (loss)	(79)	(1)
Ending Balance	(4,285)	(2,555)
Currency Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(1,531)	(1,068)
Other comprehensive income (loss) before reclassifications	(113)	(88)
Net other comprehensive income (loss)	(113)	(88)
Ending Balance	(1,644)	(1,156)
Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(96)	29
Other comprehensive income (loss) before reclassifications	(152)	16
Amounts reclassified from accumulated other comprehensive loss	118	(3)
Net other comprehensive income (loss)	(34)	13
Ending Balance	(130)	42
Pension and Other Postretirement Benefit Plans
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(2,589)	(1,691)
Amounts reclassified from accumulated other comprehensive loss	101	73
Income taxes	(15)	(10)
Net other comprehensive income (loss)	86	63
Ending Balance	(2,503)	(1,628)
Unrealized Gain/(Loss) on Marketable Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	10	176
Other comprehensive income (loss) before reclassifications	(18)	11
Net other comprehensive income (loss)	(18)	11
Ending Balance	$ (8)	$ 187