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Document and Entity Information	9 Months Ended
Document and Entity Information	Sep. 30, 2014 shares
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q3
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	1,286,793,905

CONSOLIDATED STATEMENT OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]
Revenue	$ 12,646	$ 11,608	$ 35,939	$ 33,360
Interest & other income	79	43	220	105
Gain on formation of OneSubsea				1,028
Expenses
Cost of revenue	9,689	8,926	27,708	26,047
Research & engineering	301	286	893	870
General & administrative	125	110	353	305
Impairment & other				456
Interest	90	98	282	294
Income from continuing operations before taxes	2,520	2,231	6,923	6,521
Taxes on income	556	506	1,530	1,361
Income from continuing operations	1,964	1,725	5,393	5,160
Loss from discontinued operations			(205)	(69)
Net income	1,964	1,725	5,188	5,091
Net income attributable to noncontrolling interests	15	10	52	23
Net income attributable to Schlumberger	1,949	1,715	5,136	5,068
Schlumberger amounts attributable to:
Income from continuing operations	1,949	1,715	5,341	5,137
Loss from discontinued operations			(205)	(69)
Net income attributable to Schlumberger	$ 1,949	$ 1,715	$ 5,136	$ 5,068
Basic earnings per share of Schlumberger:
Income from continuing operations	$ 1.51	$ 1.30	$ 4.11	$ 3.87
Loss from discontinued operations			(0.16)	(0.05)
Net income	1.51	1.30	3.95	3.82
Diluted earnings per share of Schlumberger:
Income from continuing operations	1.49	1.29	4.07	3.84
Loss from discontinued operations			(0.16)	(0.05)
Net income	$ 1.49	$ 1.29	$ 3.91	$ 3.79
Average shares outstanding:
Basic	1,294	1,322	1,300	1,326
Assuming dilution	1,310	1,333	1,315	1,336

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 1,964	$ 1,725	$ 5,188	$ 5,091
Currency translation adjustments
Unrealized net change arising during the period	(146)	95	(176)	(139)
Marketable securities
Unrealized (loss) gain arising during the period	(162)	(25)	(132)	58
Derivatives
Net derivatives (loss) gain on hedge transactions (see Note 11)	(151)	76	(138)	(27)
Reclassification to net income of net realized loss (gain) (see Note 11)	53	(30)	59	15
Actuarial loss
Actuarial loss arising during the period		(18)		(23)
Amortization to net income of net actuarial loss (see Note 15)	32	73	132	224
Prior service cost
Amortization to net income of net prior service cost (see Note 15)	40	31	96	94
Income taxes on pension and other postretirement benefit plans	(8)	(9)	(28)	(40)
Comprehensive income	1,622	1,918	5,001	5,253
Comprehensive income attributable to noncontrolling interests	15	10	52	23
Comprehensive income attributable to Schlumberger	$ 1,607	$ 1,908	$ 4,949	$ 5,230

CONSOLIDATED BALANCE SHEET - USD ($) $ in Millions	Sep. 30, 2014	Dec. 31, 2013
Current Assets
Cash	$ 3,118	$ 3,472
Short-term investments	3,641	4,898
Receivables less allowance for doubtful accounts (2014 - $282; 2013 - $384)	12,352	11,497
Inventories	4,702	4,603
Deferred taxes	287	288
Other current assets	1,373	1,467
Current assets total	25,473	26,225
Fixed Income Investments, held to maturity	473	363
Investments in Affiliated Companies	3,223	3,317
Fixed Assets less accumulated depreciation	15,809	15,096
Multiclient Seismic Data	751	667
Goodwill	15,243	14,706
Intangible Assets	4,690	4,709
Other Assets	2,658	2,017
Total Assets	68,320	67,100
Current Liabilities
Accounts payable and accrued liabilities	8,916	8,837
Estimated liability for taxes on income	1,499	1,490
Long-term debt - current portion	27	1,819
Short-term borrowings	1,424	964
Dividends payable	522	415
Current Liabilities Total	12,388	13,525
Long-term Debt	11,626	10,393
Postretirement Benefits	606	670
Deferred Taxes	1,733	1,708
Other Liabilities	1,280	1,169
Total Liabilities	27,633	27,465
Equity
Common stock	12,428	12,192
Treasury stock	(10,725)	(8,135)
Retained earnings	41,543	37,966
Accumulated other comprehensive loss	(2,741)	(2,554)
Schlumberger stockholders' equity	40,505	39,469
Noncontrolling interests	182	166
Total equity	40,687	39,635
Liabilities and stockholders equity	$ 68,320	$ 67,100

CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2014	Dec. 31, 2013
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts on receivable	$ 282	$ 384

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

9 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Cash flows from operating activities:

Net income

$ 5,188

$ 5,091

Add: Loss from discontinued operations

205

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

Gain on formation of OneSubsea

(1,028)

Impairment of equity method investments and currency devaluation loss in Venezuela

456

Depreciation and amortization

^[1]

3,029

2,891

Pension and other postretirement benefits expense

266

388

Stock-based compensation expense

246

255

Pension and other postretirement benefits funding

(318)

(468)

Earnings of equity method investments, less dividends received

(68)

(46)

Change in assets and liabilities:

Increase in receivables

^[2]

(779)

(1,215)

Increase in inventories

^[2]

(61)

(96)

Decrease in other current assets

^[2]

112

Increase in other assets

^[2]

(89)

(135)

(Decrease) increase in accounts payable and accrued liabilities

^[2]

(256)

189

(Decrease) increase in liability for taxes on income

^[2]

(7)

(Decrease) increase in other liabilities

^[2]

(78)

Other

^[2]

(108)

175

NET CASH PROVIDED BY OPERATING ACTIVITIES

7,282

6,571

Cash flows from investing activities:

Capital expenditures

(2,766)

(2,753)

SPM investments

(569)

(633)

Multiclient seismic data capitalized

(212)

(300)

Business acquisitions and investments, net of cash acquired

(556)

(1,144)

Sale of investments, net

1,147

963

Other

131

NET CASH USED IN INVESTING ACTIVITIES

(2,953)

(3,736)

Cash flows from financing activities:

Dividends paid

(1,451)

(1,196)

Proceeds from employee stock purchase plan

295

270

Proceeds from exercise of stock options

500

145

Stock repurchase program

(3,582)

(1,526)

Proceeds from issuance of long-term debt

2,005

2,267

Repayment of long-term debt

(2,857)

(1,211)

Net increase (decrease) in short-term borrowings

455

(306)

Other

(38)

NET CASH USED IN FINANCING ACTIVITIES

(4,673)

(1,554)

Cash flows provided by (used in) discontinued operations - operating activities

(2)

Cash flows provided by (used in) discontinued operations - investing activities

(28)

Cash flows provided by (used in) discontinued operations

(30)

Net (decrease) increase in cash before translation effect

(320)

1,251

Translation effect on cash

(34)

(7)

Cash, beginning of period

3,472

1,905

Cash, end of period

$ 3,118

$ 3,149

[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 and divestitures.

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, 2012	$ 34,858	$ 11,912	$ (6,160)	$ 32,887	$ (3,888)	$ 107
Net income	5,091			5,068		23
Currency translation adjustments	(139)				(139)
Changes in unrealized gain on marketable securities	58				58
Changes in fair value of derivatives	(12)				(12)
Pension and other postretirement benefit plans	255				255
Shares sold to optionees, less shares exchanged	145	(31)	176
Vesting of restricted stock		(48)	48
Shares issued under employee stock purchase plan	270	18	252
Stock repurchase program	(1,526)		(1,526)
Stock-based compensation expense	255	255
Dividends declared	(1,244)			(1,244)
Other	20	2	2			16
Balance at Sep. 30, 2013	38,031	12,108	(7,208)	36,711	(3,726)	146
Balance at Dec. 31, 2013	39,635	12,192	(8,135)	37,966	(2,554)	166
Net income	5,188			5,136		52
Currency translation adjustments	(176)				(176)
Changes in unrealized gain on marketable securities	(132)				(132)
Changes in fair value of derivatives	(79)				(79)
Pension and other postretirement benefit plans	200				200
Shares sold to optionees, less shares exchanged	500	(18)	518
Vesting of restricted stock		(68)	68
Shares issued under employee stock purchase plan	295	33	262
Stock repurchase program	(3,582)		(3,582)
Stock-based compensation expense	246	246
Dividends declared	(1,559)			(1,559)
Shares issued for acquisition	213	72	141
Other	(62)	(29)	3			(36)
Balance at Sep. 30, 2014	$ 40,687	$ 12,428	$ (10,725)	$ 41,543	$ (2,741)	$ 182
Balance, shares at Dec. 31, 2013	1,307	1,434	(127)
Shares sold to optionees, less shares exchanged, shares	8		8
Vesting of restricted stock, shares	1		1
Shares issued under employee stock purchase plan, shares	4		4
Shares issued for acquisition, shares	2		2
Stock repurchase program, shares	(35)		(35)
Balance, shares at Sep. 30, 2014	1,287	1,434	(147)

CONSOLIDATED STATEMENT OF EQUITY (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Retained Earnings
Dividends declared, per share	$ 1.20	$ 0.9375

Basis of Presentation	9 Months Ended
Basis of Presentation	Sep. 30, 2014
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 nine-month period ended September 30, 2014 are not necessarily indicative of the results that may be expected for the full year ending December 31, 2014. The December 31, 2013 balance sheet information has been derived from the Schlumberger 2013 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, 2013, filed with the Securities and Exchange Commission on January 31, 2014. Certain prior year items have been reclassified to conform to the current year presentation. Beginning in the second quarter of 2014, Schlumberger revised its Consolidated Statement of Cash Flows to present certain cash outflows relating to Schlumberger Production Management (“SPM”) activities as a separate line item within investing activities, referred to as “SPM investments.” Schlumberger historically presented such cash outflows as an operating activity. This change is not considered material to prior periods. New Accounting Pronouncement In May 2014, the Financial Accounting Standards Board 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. Schlumberger does not expect this ASU to have a material impact on its consolidated financial statements.

Charges and Credits

9 Months Ended

Sep. 30, 2014

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 nine months of 2013:

Second quarter 2013:

·	Schlumberger recorded a pretax and after-tax gain of $1.028 billion as a result of the deconsolidation of its subsea business in connection with the formation of the OneSubsea joint venture with Cameron International Corporation (“Cameron”). Refer to Note 4 – Acquisitions for further details.

·	Schlumberger recorded a $222 million pretax ($203 million after-tax) impairment charge relating to an investment in a company involved in developing drilling-related technology and a $142 million pretax and after-tax impairment charge relating to an investment in a contract drilling business.

First quarter 2013:

Although the functional currency of Schlumberger’s operations in Venezuela is the US dollar, a portion of the transactions are denominated in local currency. In February 2013, Venezuela’s currency was devalued from the prior exchange rate of 4.3 bolivar fuertes per US dollar to 6.3 bolivar fuertes per US dollar. As a result of this devaluation, Schlumberger recorded a pretax and after-tax foreign currency loss of $92 million during the first quarter of 2013.

The following is a summary of the charges recorded during the first nine months of 2013:

	(Stated in millions)
	Pretax			Tax		Net			Classification
Gain on formation of OneSubsea joint venture	$	(1,028	)	$	—	$	(1,028	)	Gain on formation of OneSubsea
Impairment of equity-method investments		364			19		345		Impairment & other
Currency devaluation loss in Venezuela		92		$	—		92		Impairment & other
	$	(572	)	$	19	$	(591	)

There were no charges or credits recorded in continuing operations during the first nine months of 2014.

Earnings Per Share

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Earnings Per Share

3. Earnings Per Share

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

	(Stated in millions, except per share amounts)
	2014						2013
	Schlumberger Income from Continuing Operations		Average Shares Outstanding		Earnings per Share from Continuing Operations		Schlumberger Income from Continuing Operations		Average Shares Outstanding		Earnings per Share from Continuing Operations
Third Quarter
Basic	$	1,949		1,294	$	1.51	$	1,715		1,322	$	1.30
Assumed exercise of stock options		—		12				—		7
Unvested restricted stock		—		4				—		4
Diluted	$	1,949		1,310	$	1.49	$	1,715		1,333	$	1.29

	Schlumberger Income from Continuing Operations		Average Shares Outstanding		Earnings per Share from Continuing Operations		Schlumberger Income from Continuing Operations		Average Shares Outstanding		Earnings per Share from Continuing Operations
Nine Months
Basic	$	5,341		1,300	$	4.11	$	5,137		1,326	$	3.87
Assumed exercise of stock options		—		11				—		6
Unvested restricted stock		—		4				—		4
Diluted	$	5,341		1,315	$	4.07	$	5,137		1,336	$	3.84

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)
	2014		2013
Third Quarter		1		13
Nine Months		1		13

Acquisitions	9 Months Ended
Acquisitions	Sep. 30, 2014
Business Combinations [Abstract]
Acquisitions	4. Acquisitions Formation of OneSubsea Joint Venture On June 30, 2013, Schlumberger and Cameron completed the formation of OneSubsea, a joint venture to manufacture and develop products, systems and services for the subsea oil and gas market. Schlumberger and Cameron each contributed all of their respective subsea businesses to the joint venture and Schlumberger made a $600 million cash payment to Cameron. Schlumberger owns 40% of OneSubsea and accounts for this investment under the equity method. Schlumberger recognized a pretax and after-tax gain of $1.028 billion, which is classified as Gain on formation of OneSubsea in the Consolidated Statement of Income, as a result of the deconsolidation of its subsea business. This gain is equal to the difference between the fair value of the Schlumberger subsea business, which was determined based on the present value of its estimated future cash flows, and its carrying value at the time of closing. Other During the first nine months of 2014 and 2013, Schlumberger made certain other acquisitions and investments, for cash payments net of cash acquired, of $556 million and $544 million, respectively. Additionally, during the first nine months of 2014, Schlumberger issued 2.1 million shares of its common stock, valued at $213 million, in connection with an acquisition. None of these transactions were significant, individually or in the aggregate.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

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+ Details

Inventories

9 Months Ended

Sep. 30, 2014

Inventory Disclosure [Abstract]

Inventories

5. Inventories

A summary of inventories follows:

	(Stated in millions)
	Sept. 30,		Dec. 31,
	2014		2013
Raw materials & field materials	$	2,637	$	2,539
Work in process		296		261
Finished goods		1,769		1,803
	$	4,702	$	4,603

Fixed Assets

9 Months Ended

Sep. 30, 2014

Property Plant And Equipment [Abstract]

Fixed Assets

6. Fixed Assets

A summary of fixed assets follows:

	(Stated in millions)
	Sept. 30,		Dec. 31,
	2014		2013
Property, plant & equipment	$	37,305	$	35,164
Less: Accumulated depreciation		21,496		20,068
	$	15,809	$	15,096

Depreciation expense charged to income was as follows:

	(Stated in millions)
	2014		2013
Third Quarter	$	821	$	788
Nine Months	$	2,414	$	2,324

Multiclient Seismic Data

9 Months Ended

Sep. 30, 2014

Multiclient Seismic Data [Abstract]

Multiclient Seismic Data

7. Multiclient Seismic Data

The change in the carrying amount of multiclient seismic data for the nine months ended September 30, 2014 was as follows:

(Stated in millions)
Balance at December 31, 2013	$	667
Capitalized in period		212
Charged to expense		(128	)
Balance at September 30, 2014	$	751

Goodwill

9 Months Ended

Sep. 30, 2014

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill

8. Goodwill

The changes in the carrying amount of goodwill by reporting unit for the nine months ended September 30, 2014 were as follows:

	(Stated in millions)
	Reservoir
	Characterization			Drilling			Production			Total
Balance at December 31, 2013	$	3,737		$	8,315		$	2,654		$	14,706
Acquisitions		15			223			321			559
Reallocation		83			(83	)		—			—
Impact of changes in exchange rates		(9	)		(6	)		(7	)		(22	)
Balance at September 30, 2014	$	3,826		$	8,449		$	2,968		$	15,243

Intangible Assets

9 Months Ended

Sep. 30, 2014

Goodwill And Intangible Assets Disclosure [Abstract]

Intangible Assets

9. Intangible Assets

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

	(Stated in millions)
	Sept. 30, 2014						Dec. 31, 2013
	Gross		Accumulated		Net Book		Gross		Accumulated		Net Book
	Book Value		Amortization		Value		Book Value		Amortization		Value
Technology/Technical Know-How	$	1,960	$	681	$	1,279	$	1,960	$	597	$	1,363
Tradenames		1,640		301		1,339		1,647		257		1,390
Customer Relationships		2,460		493		1,967		2,263		407		1,856
Other		372		267		105		435		335		100
	$	6,432	$	1,742	$	4,690	$	6,305	$	1,596	$	4,709

Amortization expense charged to income was as follows:

	(Stated in millions)
	2014		2013
Third Quarter	$	88	$	80
Nine Months	$	257	$	244

The weighted average amortization period for all intangible assets is approximately 20 years.

Based on the net book value of intangible assets at September 30, 2014, amortization charged to income for the subsequent five years is estimated to be: remainder of 2014—$90 million; 2015—$358 million; 2016—$349 million; 2017—$340 million; 2018—$331 million; and 2019—$320 million.

Long-term Debt

9 Months Ended

Sep. 30, 2014

Debt Disclosure [Abstract]

Long-term Debt

10. Long-term Debt

A summary of Long-term Debt follows:

	(Stated in millions)
	Sept. 30,		Dec. 31,
	2014		2013
3.30% Senior Notes due 2021	$	1,596	$	1,596
3.65% Senior Notes due 2023		1,495		1,495
2.75% Guaranteed Notes due 2015		1,273		1,373
1.95% Senior Notes due 2016		1,099		1,099
4.20% Senior Notes due 2021		1,100		1,099
1.25% Senior Notes due 2017		1,000		999
2.40% Senior Notes due 2022		999		999
1.50% Guaranteed Notes due 2019		656		697
2.65% Senior Notes due 2016		500		500
Commercial paper borrowings		1,392		—
Other		516		536
	$	11,626	$	10,393

The estimated fair value of Schlumberger’s Long-term Debt at September 30, 2014 and December 31, 2013, based on quoted market prices, was $11.9 billion and $10.4 billion, respectively.

Borrowings under the commercial paper program at September 30, 2014 were $1.4 billion, all of which were classified within Long-term debt in the Consolidated Balance Sheet. At December 31, 2013, borrowings under the commercial paper program were $95 million, all of which were classified within Long-term debt – current portion in the Consolidated Balance Sheet.

Derivative Instruments and Hedging Activities

9 Months Ended

Sep. 30, 2014

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities

11. 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.

Foreign Currency Exchange Rate Risk

As a multinational company, Schlumberger conducts business in more than 85 countries. Schlumberger’s functional currency is primarily the US dollar, which is consistent with the oil and gas industry. 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 local currency expenses exceed revenues denominated in local currency that are other than the functional currency. In addition, Schlumberger is also exposed to risks on future cash flows relating to certain of its long-term 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 September 30, 2014, Schlumberger recognized a cumulative net $50 million loss in Equity 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 also exposed to changes in the fair value of assets and liabilities, including certain of its long-term debt, which are denominated in currencies other than the functional currency. Schlumberger uses foreign currency forward contracts and foreign currency options to hedge this exposure as it relates to certain currencies. These contracts are accounted for as fair value hedges with the fair value of the contracts recorded on the Consolidated Balance Sheet and changes in the fair value recognized in the Consolidated Statement of Income along with the change in fair value of the hedged item.

At September 30, 2014, contracts were outstanding for the US dollar equivalent of $6.2 billion in various foreign currencies, of which $2.5 billion related to hedges of debt denominated in currencies other than the functional currency.

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 will 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 currently in income to largely offset the respective gains and losses recognized on changes in the fair value of the hedged debt.

At September 30, 2014, Schlumberger had fixed rate debt aggregating $9.1 billion and variable rate debt aggregating $4.0 billion, after taking into account the effect of the swap.

Short-term investments and Fixed income investments, held to maturity, totaled $4.1 billion at September 30, 2014, and were comprised primarily of money market funds, eurodollar time deposits, certificates of deposit, commercial paper, euro notes and Eurobonds, and were substantially all denominated in US dollars. The carrying value of these investments approximated fair value, which was estimated using quoted market prices for those or similar investments.

The fair values of outstanding derivative instruments were as follows:

	(Stated in millions)
	Fair Value of Derivatives				Consolidated Balance Sheet Classification
	Sept. 30,		Dec. 31,
	2014		2013
Derivative Assets
Derivatives designated as hedges:
Foreign exchange contracts	$	3	$	98	Other current assets
Foreign exchange contracts		2		24	Other Assets
Interest rate swap		—		27	Other Assets
	$	5	$	149

Derivatives not designated as hedges:
Foreign exchange contracts	$	10	$	10	Other current assets
Foreign exchange contracts		—		4	Other Assets
	$	10	$	14
	$	15	$	163
Derivative Liabilities
Derivatives designated as hedges:
Foreign exchange contracts	$	42	$	14	Accounts payable and accrued liabilities
Foreign exchange contracts		83		1	Other Liabilities
Interest rate swap		15		—	Other Liabilities
	$	140	$	15

Derivatives not designated as hedges:
Foreign exchange contracts	$	10	$	2	Accounts payable and accrued liabilities

	$	150	$	17

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
	Third Quarter					Nine Months
	2014			2013		2014			2013			Consolidated Statement of Income Classification
Derivatives designated as fair value hedges:
Interest rate swap	$	(44	)	$	—	$	(53	)	$	(2	)	Interest expense

Derivatives not designated as hedges:
Foreign exchange contracts	$	(26	)	$	31	$	(21	)	$	8		Cost of revenue

The effect of derivative instruments in cash flow hedging relationships on income and Accumulated Other Comprehensive Loss (AOCL) was as follows:

	(Stated in millions)
	Gain (Loss) Reclassified from AOCL into Income
	Third Quarter						Nine Months
	2014			2013			2014			2013			Consolidated Statement of Income Classification
Foreign exchange contracts	$	(54	)	$	33		$	(62	)	$	(8	)	Cost of revenue
Foreign exchange contracts		1			(3	)		3			(7	)	Research & engineering
	$	(53	)	$	30		$	(59	)	$	(15	)

	(Stated in millions)
	Gain (Loss) Recognized in AOCL
	Third Quarter					Nine Months
	2014			2013		2014			2013
Foreign exchange contracts	$	(151	)	$	76	$	(138	)	$	(27	)

- 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
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+ Details

Income Tax

9 Months Ended

Sep. 30, 2014

Income Tax Disclosure [Abstract]

Income Tax

12. Income Tax

Income from continuing operations before taxes which were subject to US and non-US income taxes was as follows:

	(Stated in millions)
	Third Quarter				Nine Months
	2014		2013		2014		2013
United States	$	522	$	494	$	1,671	$	1,425
Outside United States		1,998		1,737		5,252		5,096
	$	2,520	$	2,231	$	6,923	$	6,521

Schlumberger recorded net pretax credits of $572 million during the nine months ended September 30, 2013 ($53 million of charges in the US and $625 million of net credits outside the US). See Note 2 – Charges and Credits.

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

	(Stated in millions)
	Sept. 30,				Dec. 31,
	2014				2013
Postretirement benefits	$	206		$	236
Intangible assets		(1,497	)		(1,502	)
Investments in non-US subsidiaries		(228	)		(282	)
Other, net		73			128
	$	(1,446	)	$	(1,420	)

The above deferred tax balances at September 30, 2014 and December 31, 2013 were net of valuation allowances relating to net operating losses in certain countries of $234 million and $238 million, respectively.

The components of consolidated Taxes on income were as follows:

	(Stated in millions)
	Third Quarter						Nine Months
	2014			2013			2014			2013
Current:
United States — Federal	$	202		$	116		$	479		$	435
United States — State		19			16			38			51
Outside United States		342			313			1,033			859
	$	563		$	445		$	1,550		$	1,345
Deferred:
United States — Federal	$	(38	)	$	36		$	(27	)	$	12
United States — State		(4	)		2			(2	)		(1	)
Outside United States		35			26			9			28
Valuation allowance		—			(3	)		—			(23	)
	$	(7	)	$	61		$	(20	)	$	16
	$	556		$	506		$	1,530		$	1,361

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

	Third Quarter						Nine Months
	2014			2013			2014			2013
US federal statutory rate		35	%		35	%		35	%		35	%
Non-US income taxed at different rates		(12	)		(12	)		(11	)		(12	)
Charges and credits (See Note 2)		—			—			—			(2	)
Other		(1	)		—			(2	)		—
		22	%		23	%		22	%		21	%

Contingencies	9 Months Ended
Contingencies	Sep. 30, 2014
Commitments And Contingencies Disclosure [Abstract]
Contingencies	13. Contingencies In 2009, United States officials began a grand jury investigation and an associated regulatory inquiry, both related to certain historical Schlumberger operations in specified countries that are subject to United States trade and economic sanctions. Governmental agencies and authorities have a broad range of civil and criminal penalties that they may seek to impose for violations of trade and economic sanction laws including, but not limited to, disgorgement, fines, penalties and modifications to business practices. In recent years, these agencies and authorities have obtained a wide range of penalties in settlements with companies arising from trade and economic sanction investigations, including in some cases fines and other penalties in the tens and hundreds of millions of dollars. Schlumberger continues to cooperate and has been discussing the resolution of this matter with the governmental authorities. During the latter part of the second quarter of 2014, these discussions progressed to a point whereby Schlumberger determined that it was appropriate to increase its liability for this contingency. Accordingly, Schlumberger recorded a $205 million charge during the second quarter of 2014 within Loss from discontinued operations in the Consolidated Statement of Income. However, no certainty exists that a settlement will be reached or if so, the amount of any such settlement. Therefore, the ultimate loss could be greater or less than the amount accrued. 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.

Segment Information

9 Months Ended

Sep. 30, 2014

Segment Reporting [Abstract]

Segment Information

14. Segment Information

	(Stated in millions)
	Third Quarter 2014						Third Quarter 2013
	Revenue			Income before taxes			Revenue			Income before taxes
Reservoir Characterization	$	3,184		$	954		$	3,289		$	988
Drilling		4,821			1,045			4,358			889
Production		4,697			857			4,024			707
Eliminations & other		(56	)		(50	)		(63	)		(88	)
Pretax operating income					2,806						2,496
Corporate & other ⁽¹⁾					(210	)					(179	)
Interest income ⁽²⁾					8						6
Interest expense ⁽³⁾					(84	)					(92	)
	$	12,646		$	2,520		$	11,608		$	2,231

⁽¹⁾ Comprised principally of certain corporate expenses not allocated to the segments, interest on postretirement medical benefits, stock-based compensation costs, amortization expense associated with certain intangible assets and other nonoperating items.

⁽²⁾ Interest income excludes amounts which are included in the segments’ income ($5 million in 2014; $3 million in 2013).

⁽³⁾ Interest expense excludes amounts which are included in the segments’ income ($6 million in 2014; $6 million in 2013).

	(Stated in millions)
	Nine Months 2014						Nine Months 2013
	Revenue			Income before taxes			Revenue			Income before taxes
Reservoir Characterization	$	9,131		$	2,651		$	9,157		$	2,629
Drilling		13,804			2,906			12,659			2,413
Production		13,157			2,319			11,708			1,888
Eliminations & other		(153	)		(81	)		(164	)		(190	)
Pretax operating income					7,795						6,740
Corporate & other ⁽¹⁾					(628	)					(529	)
Interest income ⁽²⁾					23						15
Interest expense ⁽³⁾					(267	)					(277	)
Charges and credits ⁽⁴⁾					—						572
	$	35,939		$	6,923		$	33,360		$	6,521

⁽²⁾ Interest income excludes amounts which are included in the segments’ income ($15 million in 2014; $6 million in 2013).

⁽³⁾ Interest expense excludes amounts which are included in the segments’ income ($15 million in 2014; $17 million in 2013).

⁽⁴⁾ See Note 2 – Charges and Credits.

- 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.

+ References

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-Name Accounting Standards Codification
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+ Details

Pension and Other Postretirement Benefit Plans

9 Months Ended

Sep. 30, 2014

Compensation And Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefit Plans

15. Pension and Other Postretirement Benefit Plans

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

	(Stated in millions)
	Third Quarter												Nine Months
	2014						2013						2014						2013
	US			Int'l			US			Int'l			US			Int'l			US			Int'l
Service cost — benefits earned during period	$	19		$	38		$	19		$	28		$	54		$	98		$	60		$	95
Interest cost on projected benefit obligation		47			90			38			65			123			218			113			189
Expected return on plan assets		(60	)		(143	)		(47	)		(88	)		(156	)		(343	)		(150	)		(288	)
Amortization of prior service cost		3			38			3			29			9			90			9			88
Amortization of net loss		17			18			28			43			61			70			91			117
	$	26		$	41		$	41		$	77		$	91		$	133		$	123		$	201

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

	(Stated in millions)
	Third Quarter						Nine Months
	2014			2013			2014			2013
Service cost — benefits earned during period	$	10		$	12		$	32		$	36
Interest cost on accumulated postretirement benefit obligation		15			14			45			42
Expected return on plan assets		(12	)		(9	)		(33	)		(28	)
Amortization of prior service cost		(1	)		(1	)		(3	)		(3	)
Amortization of net loss		(3	)		2			1			17
	$	9		$	18		$	42		$	64

Accumulated Other Comprehensive Loss

9 Months Ended

Sep. 30, 2014

Equity [Abstract]

Accumulated Other Comprehensive Loss

16. Accumulated Other Comprehensive Loss

Accumulated Other Comprehensive Loss consists of the following:

	(Stated in millions)
							Pension and			Unrealized
	Currency			Fair Value			Other			Gains on
	Translation			of			Postretirement			Marketable
	Adjustments			Derivatives			Benefit Plans			Securities			Total
Balance, January 1, 2014	$	(1,068	)	$	29		$	(1,691	)	$	176		$	(2,554	)
Other comprehensive income (loss) before reclassifications		(176	)		(138	)		—			(132	)		(446	)
Amounts reclassified from accumulated other comprehensive loss		—			59			228			—			287
Income taxes		—			—			(28	)		—			(28	)
Net other comprehensive income (loss)		(176	)		(79	)		200			(132	)		(187	)
Balance, September 30, 2014	$	(1,244	)	$	(50	)	$	(1,491	)	$	44		$	(2,741	)

	(Stated in millions)
							Pension and			Unrealized
	Currency			Fair Value			Other			Gains on
	Translation			of			Postretirement			Marketable
	Adjustments			Derivatives			Benefit Plans			Securities		Total
Balance, January 1, 2013	$	(918	)	$	30		$	(3,141	)	$	141	$	(3,888	)
Other comprehensive income (loss) before reclassifications		(139	)		(27	)		(23	)		58		(131	)
Amounts reclassified from accumulated other comprehensive loss		—			15			318			—		333
Income taxes		—			—			(40	)		—		(40	)
Net other comprehensive income (loss)		(139	)		(12	)		255			58		162
Balance, September 30, 2013	$	(1,057	)	$	18		$	(2,886	)	$	199	$	(3,726	)

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Name Accounting Standards Codification
-Glossary Reclassification Adjustments
-URI http://asc.fasb.org/extlink&oid=6522872

+ Details

Discontinued Operations

9 Months Ended

Sep. 30, 2014

Discontinued Operations And Disposal Groups [Abstract]

Discontinued Operations

17. Discontinued Operations

During the second quarter of 2013, Schlumberger completed the wind down of its operations in Iran and has classified the historical results of this business as a discontinued operation.

The following table summarizes the results of this discontinued operation:

(Stated in millions)
	Nine Months
	2014			2013
Revenue	$	—		$	102
Loss before taxes	$	(205	)	$	(63	)
Tax expense		—			(6	)
Loss from discontinued operations	$	(205	)	$	(69	)

- Definition

The entire disclosure for the facts and circumstances leading to the completed or expected disposal, manner and timing of disposal, the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss), amounts of revenues and pretax profit or loss reported in discontinued operations, the segment in which the disposal group was reported, and the classification (whether sold or classified as held for sale) and carrying value of the assets and liabilities comprising the disposal group. Includes all disposal groups, including those classified as components of the entity (discontinued operations).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

Basis of Presentation (Policies)	9 Months Ended
Basis of Presentation (Policies)	Sep. 30, 2014
Organization Consolidation And Presentation Of Financial Statements [Abstract]
New Accounting Pronouncement	New Accounting Pronouncement In May 2014, the Financial Accounting Standards Board 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. Schlumberger does not expect this ASU to have a material impact on its consolidated financial statements.

Charges and Credits (Tables)

9 Months Ended

Sep. 30, 2014

Restructuring And Related Activities [Abstract]

Summary of the Charges

The following is a summary of the charges recorded during the first nine months of 2013:

	(Stated in millions)
	Pretax			Tax		Net			Classification
Gain on formation of OneSubsea joint venture	$	(1,028	)	$	—	$	(1,028	)	Gain on formation of OneSubsea
Impairment of equity-method investments		364			19		345		Impairment & other
Currency devaluation loss in Venezuela		92		$	—		92		Impairment & other
	$	(572	)	$	19	$	(591	)

Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Reconciliation of Earnings Per Share from Continuing Operations

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

	(Stated in millions, except per share amounts)
	2014						2013
	Schlumberger Income from Continuing Operations		Average Shares Outstanding		Earnings per Share from Continuing Operations		Schlumberger Income from Continuing Operations		Average Shares Outstanding		Earnings per Share from Continuing Operations
Third Quarter
Basic	$	1,949		1,294	$	1.51	$	1,715		1,322	$	1.30
Assumed exercise of stock options		—		12				—		7
Unvested restricted stock		—		4				—		4
Diluted	$	1,949		1,310	$	1.49	$	1,715		1,333	$	1.29

	Schlumberger Income from Continuing Operations		Average Shares Outstanding		Earnings per Share from Continuing Operations		Schlumberger Income from Continuing Operations		Average Shares Outstanding		Earnings per Share from Continuing Operations
Nine Months
Basic	$	5,341		1,300	$	4.11	$	5,137		1,326	$	3.87
Assumed exercise of stock options		—		11				—		6
Unvested restricted stock		—		4				—		4
Diluted	$	5,341		1,315	$	4.07	$	5,137		1,336	$	3.84

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

	(Stated in millions)
	2014		2013
Third Quarter		1		13
Nine Months		1		13

Inventories (Tables)

9 Months Ended

Sep. 30, 2014

Inventory Disclosure [Abstract]

Inventory Disclosure

A summary of inventories follows:

	(Stated in millions)
	Sept. 30,		Dec. 31,
	2014		2013
Raw materials & field materials	$	2,637	$	2,539
Work in process		296		261
Finished goods		1,769		1,803
	$	4,702	$	4,603

Fixed Assets (Tables)

9 Months Ended

Sep. 30, 2014

Property Plant And Equipment [Abstract]

Property, Plant and Equipment

A summary of fixed assets follows:

	(Stated in millions)
	Sept. 30,		Dec. 31,
	2014		2013
Property, plant & equipment	$	37,305	$	35,164
Less: Accumulated depreciation		21,496		20,068
	$	15,809	$	15,096

Depreciation Expense Relating to Fixed Assets

Depreciation expense charged to income was as follows:

	(Stated in millions)
	2014		2013
Third Quarter	$	821	$	788
Nine Months	$	2,414	$	2,324

Multiclient Seismic Data (Tables)

9 Months Ended

Sep. 30, 2014

Multiclient Seismic Data [Abstract]

Multiclient Seismic Data

The change in the carrying amount of multiclient seismic data for the nine months ended September 30, 2014 was as follows:

(Stated in millions)
Balance at December 31, 2013	$	667
Capitalized in period		212
Charged to expense		(128	)
Balance at September 30, 2014	$	751

Goodwill (Tables)

9 Months Ended

Sep. 30, 2014

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 nine months ended September 30, 2014 were as follows:

	(Stated in millions)
	Reservoir
	Characterization			Drilling			Production			Total
Balance at December 31, 2013	$	3,737		$	8,315		$	2,654		$	14,706
Acquisitions		15			223			321			559
Reallocation		83			(83	)		—			—
Impact of changes in exchange rates		(9	)		(6	)		(7	)		(22	)
Balance at September 30, 2014	$	3,826		$	8,449		$	2,968		$	15,243

Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2014

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)
	Sept. 30, 2014						Dec. 31, 2013
	Gross		Accumulated		Net Book		Gross		Accumulated		Net Book
	Book Value		Amortization		Value		Book Value		Amortization		Value
Technology/Technical Know-How	$	1,960	$	681	$	1,279	$	1,960	$	597	$	1,363
Tradenames		1,640		301		1,339		1,647		257		1,390
Customer Relationships		2,460		493		1,967		2,263		407		1,856
Other		372		267		105		435		335		100
	$	6,432	$	1,742	$	4,690	$	6,305	$	1,596	$	4,709

Amortization Expense Charged to Income for Intangible Assets

Amortization expense charged to income was as follows:

	(Stated in millions)
	2014		2013
Third Quarter	$	88	$	80
Nine Months	$	257	$	244

Long-term Debt (Tables)

9 Months Ended

Sep. 30, 2014

Debt Disclosure [Abstract]

Long-term Debt

A summary of Long-term Debt follows:

	(Stated in millions)
	Sept. 30,		Dec. 31,
	2014		2013
3.30% Senior Notes due 2021	$	1,596	$	1,596
3.65% Senior Notes due 2023		1,495		1,495
2.75% Guaranteed Notes due 2015		1,273		1,373
1.95% Senior Notes due 2016		1,099		1,099
4.20% Senior Notes due 2021		1,100		1,099
1.25% Senior Notes due 2017		1,000		999
2.40% Senior Notes due 2022		999		999
1.50% Guaranteed Notes due 2019		656		697
2.65% Senior Notes due 2016		500		500
Commercial paper borrowings		1,392		—
Other		516		536
	$	11,626	$	10,393

- 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

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-Name Accounting Standards Codification
-Topic 210
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-Subparagraph (SX 210.5-02.22)
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-Publisher SEC
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-Number 210
-Section 02
-Paragraph 22
-Article 5

+ Details

Derivative Instruments and Hedging Activities (Tables)

9 Months Ended

Sep. 30, 2014

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
	Sept. 30,		Dec. 31,
	2014		2013
Derivative Assets
Derivatives designated as hedges:
Foreign exchange contracts	$	3	$	98	Other current assets
Foreign exchange contracts		2		24	Other Assets
Interest rate swap		—		27	Other Assets
	$	5	$	149

Derivatives not designated as hedges:
Foreign exchange contracts	$	10	$	10	Other current assets
Foreign exchange contracts		—		4	Other Assets
	$	10	$	14
	$	15	$	163
Derivative Liabilities
Derivatives designated as hedges:
Foreign exchange contracts	$	42	$	14	Accounts payable and accrued liabilities
Foreign exchange contracts		83		1	Other Liabilities
Interest rate swap		15		—	Other Liabilities
	$	140	$	15

Derivatives not designated as hedges:
Foreign exchange contracts	$	10	$	2	Accounts payable and accrued liabilities

	$	150	$	17

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
	Third Quarter					Nine Months
	2014			2013		2014			2013			Consolidated Statement of Income Classification
Derivatives designated as fair value hedges:
Interest rate swap	$	(44	)	$	—	$	(53	)	$	(2	)	Interest expense

Derivatives not designated as hedges:
Foreign exchange contracts	$	(26	)	$	31	$	(21	)	$	8		Cost of revenue

Effect of Derivative Instruments in Cash Flow Hedging Relationships on Income and Accumulated Other Comprehensive Loss (AOCL)

The effect of derivative instruments in cash flow hedging relationships on income and Accumulated Other Comprehensive Loss (AOCL) was as follows:

	(Stated in millions)
	Gain (Loss) Reclassified from AOCL into Income
	Third Quarter						Nine Months
	2014			2013			2014			2013			Consolidated Statement of Income Classification
Foreign exchange contracts	$	(54	)	$	33		$	(62	)	$	(8	)	Cost of revenue
Foreign exchange contracts		1			(3	)		3			(7	)	Research & engineering
	$	(53	)	$	30		$	(59	)	$	(15	)

	(Stated in millions)
	Gain (Loss) Recognized in AOCL
	Third Quarter					Nine Months
	2014			2013		2014			2013
Foreign exchange contracts	$	(151	)	$	76	$	(138	)	$	(27	)

Income Tax (Tables)

9 Months Ended

Sep. 30, 2014

Income Tax Disclosure [Abstract]

Income Tax Disclosure Table

Income from continuing operations before taxes which were subject to US and non-US income taxes was as follows:

	(Stated in millions)
	Third Quarter				Nine Months
	2014		2013		2014		2013
United States	$	522	$	494	$	1,671	$	1,425
Outside United States		1,998		1,737		5,252		5,096
	$	2,520	$	2,231	$	6,923	$	6,521

Components of Net Deferred Tax Assets

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

	(Stated in millions)
	Sept. 30,				Dec. 31,
	2014				2013
Postretirement benefits	$	206		$	236
Intangible assets		(1,497	)		(1,502	)
Investments in non-US subsidiaries		(228	)		(282	)
Other, net		73			128
	$	(1,446	)	$	(1,420	)

Components of Consolidated Income Taxes

The components of consolidated Taxes on income were as follows:

	(Stated in millions)
	Third Quarter						Nine Months
	2014			2013			2014			2013
Current:
United States — Federal	$	202		$	116		$	479		$	435
United States — State		19			16			38			51
Outside United States		342			313			1,033			859
	$	563		$	445		$	1,550		$	1,345
Deferred:
United States — Federal	$	(38	)	$	36		$	(27	)	$	12
United States — State		(4	)		2			(2	)		(1	)
Outside United States		35			26			9			28
Valuation allowance		—			(3	)		—			(23	)
	$	(7	)	$	61		$	(20	)	$	16
	$	556		$	506		$	1,530		$	1,361

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:

	Third Quarter						Nine Months
	2014			2013			2014			2013
US federal statutory rate		35	%		35	%		35	%		35	%
Non-US income taxed at different rates		(12	)		(12	)		(11	)		(12	)
Charges and credits (See Note 2)		—			—			—			(2	)
Other		(1	)		—			(2	)		—
		22	%		23	%		22	%		21	%

Segment Information (Tables)

9 Months Ended

Sep. 30, 2014

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

	(Stated in millions)
	Third Quarter 2014						Third Quarter 2013
	Revenue			Income before taxes			Revenue			Income before taxes
Reservoir Characterization	$	3,184		$	954		$	3,289		$	988
Drilling		4,821			1,045			4,358			889
Production		4,697			857			4,024			707
Eliminations & other		(56	)		(50	)		(63	)		(88	)
Pretax operating income					2,806						2,496
Corporate & other ⁽¹⁾					(210	)					(179	)
Interest income ⁽²⁾					8						6
Interest expense ⁽³⁾					(84	)					(92	)
	$	12,646		$	2,520		$	11,608		$	2,231

⁽²⁾ Interest income excludes amounts which are included in the segments’ income ($5 million in 2014; $3 million in 2013).

⁽³⁾ Interest expense excludes amounts which are included in the segments’ income ($6 million in 2014; $6 million in 2013).

	(Stated in millions)
	Nine Months 2014						Nine Months 2013
	Revenue			Income before taxes			Revenue			Income before taxes
Reservoir Characterization	$	9,131		$	2,651		$	9,157		$	2,629
Drilling		13,804			2,906			12,659			2,413
Production		13,157			2,319			11,708			1,888
Eliminations & other		(153	)		(81	)		(164	)		(190	)
Pretax operating income					7,795						6,740
Corporate & other ⁽¹⁾					(628	)					(529	)
Interest income ⁽²⁾					23						15
Interest expense ⁽³⁾					(267	)					(277	)
Charges and credits ⁽⁴⁾					—						572
	$	35,939		$	6,923		$	33,360		$	6,521

⁽²⁾ Interest income excludes amounts which are included in the segments’ income ($15 million in 2014; $6 million in 2013).

⁽³⁾ Interest expense excludes amounts which are included in the segments’ income ($15 million in 2014; $17 million in 2013).

⁽⁴⁾ See Note 2 – Charges and Credits.

Pension and Other Postretirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2014

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)
	Third Quarter												Nine Months
	2014						2013						2014						2013
	US			Int'l			US			Int'l			US			Int'l			US			Int'l
Service cost — benefits earned during period	$	19		$	38		$	19		$	28		$	54		$	98		$	60		$	95
Interest cost on projected benefit obligation		47			90			38			65			123			218			113			189
Expected return on plan assets		(60	)		(143	)		(47	)		(88	)		(156	)		(343	)		(150	)		(288	)
Amortization of prior service cost		3			38			3			29			9			90			9			88
Amortization of net loss		17			18			28			43			61			70			91			117
	$	26		$	41		$	41		$	77		$	91		$	133		$	123		$	201

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

	(Stated in millions)
	Third Quarter						Nine Months
	2014			2013			2014			2013
Service cost — benefits earned during period	$	10		$	12		$	32		$	36
Interest cost on accumulated postretirement benefit obligation		15			14			45			42
Expected return on plan assets		(12	)		(9	)		(33	)		(28	)
Amortization of prior service cost		(1	)		(1	)		(3	)		(3	)
Amortization of net loss		(3	)		2			1			17
	$	9		$	18		$	42		$	64

Accumulated Other Comprehensive Loss (Tables)

9 Months Ended

Sep. 30, 2014

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Loss

Accumulated Other Comprehensive Loss consists of the following:

	(Stated in millions)
							Pension and			Unrealized
	Currency			Fair Value			Other			Gains on
	Translation			of			Postretirement			Marketable
	Adjustments			Derivatives			Benefit Plans			Securities			Total
Balance, January 1, 2014	$	(1,068	)	$	29		$	(1,691	)	$	176		$	(2,554	)
Other comprehensive income (loss) before reclassifications		(176	)		(138	)		—			(132	)		(446	)
Amounts reclassified from accumulated other comprehensive loss		—			59			228			—			287
Income taxes		—			—			(28	)		—			(28	)
Net other comprehensive income (loss)		(176	)		(79	)		200			(132	)		(187	)
Balance, September 30, 2014	$	(1,244	)	$	(50	)	$	(1,491	)	$	44		$	(2,741	)

	(Stated in millions)
							Pension and			Unrealized
	Currency			Fair Value			Other			Gains on
	Translation			of			Postretirement			Marketable
	Adjustments			Derivatives			Benefit Plans			Securities		Total
Balance, January 1, 2013	$	(918	)	$	30		$	(3,141	)	$	141	$	(3,888	)
Other comprehensive income (loss) before reclassifications		(139	)		(27	)		(23	)		58		(131	)
Amounts reclassified from accumulated other comprehensive loss		—			15			318			—		333
Income taxes		—			—			(40	)		—		(40	)
Net other comprehensive income (loss)		(139	)		(12	)		255			58		162
Balance, September 30, 2013	$	(1,057	)	$	18		$	(2,886	)	$	199	$	(3,726	)

Discontinued Operations (Tables)

9 Months Ended

Sep. 30, 2014

Discontinued Operations And Disposal Groups [Abstract]

Discontinued Operations

The following table summarizes the results of this discontinued operation:

(Stated in millions)
	Nine Months
	2014			2013
Revenue	$	—		$	102
Loss before taxes	$	(205	)	$	(63	)
Tax expense		—			(6	)
Loss from discontinued operations	$	(205	)	$	(69	)

- Definition

Tabular disclosure of disposal groups, which may include the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss), amounts of revenues and pretax profit or loss reported in discontinued operations, the classification and carrying value of the assets and liabilities comprising the disposal group, and the segment in which the disposal group was reported. Also may include the amount of adjustments to amounts previously reported in discontinued operations such as resolution of contingencies arising from the disposal transaction or the operations of the component prior to disposal.

+ References + Details

Charges and Credits - Additional Information (Detail) $ in Millions	3 Months Ended	6 Months Ended	9 Months Ended
	Mar. 31, 2013 USD ($) / $	Jun. 30, 2013 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Dec. 31, 2012 / $
Restructuring Cost And Reserve [Line Items]
Pre tax and after tax gain from deconsolidation of business		$ 1,028
Charges or credits recorded in continuing operations			$ 0	$ (591)
Other Restructuring
Restructuring Cost And Reserve [Line Items]
Currency loss before tax	$ (92)
Currency loss after tax	$ (92)
Venezuela Bolivar Official Currency Exchange Rate To Dollar
Restructuring Cost And Reserve [Line Items]
Exchange rate \| / $	6.3				4.3
Drilling Related Technology
Restructuring Cost And Reserve [Line Items]
Impairment charge, Pretax		222
Impairment charge, Net		203
Contract Drilling
Restructuring Cost And Reserve [Line Items]
Impairment charge, Pretax		142
Impairment charge, Net		$ 142

Charges and Credits - Summary of Charges (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Investment In Joint Venture [Line Items]
Charges, Pretax		$ (572)
Charges, Tax		19
Charges, Net	$ 0	(591)
Gain on formation of OneSubsea joint venture \| Gain on formation of OneSubsea
Investment In Joint Venture [Line Items]
Charges, Pretax		(1,028)
Charges, Net		(1,028)
Impairment of equity-method investments \| Impairment And other
Investment In Joint Venture [Line Items]
Charges, Pretax		364
Charges, Tax		19
Charges, Net		345
Currency devaluation loss in Venezuela \| Impairment And other
Investment In Joint Venture [Line Items]
Charges, Pretax		92
Charges, Net		$ 92

Earnings Per Share - Reconciliation of Earnings Per Share from Continuing Operations (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Schlumberger amounts attributable to:
Basic	$ 1,949	$ 1,715	$ 5,341	$ 5,137
Assumed exercise of stock options	0	0	0	0
Unvested restricted stock	0	0	0	0
Diluted	$ 1,949	$ 1,715	$ 5,341	$ 5,137
Average shares outstanding:
Basic	1,294	1,322	1,300	1,326
Assumed exercise of stock options	12	7	11	6
Unvested restricted stock	4	4	4	4
Diluted	1,310	1,333	1,315	1,336
Earnings per Share from Continuing Operations
Basic	$ 1.51	$ 1.30	$ 4.11	$ 3.87
Diluted	$ 1.49	$ 1.29	$ 4.07	$ 3.84

Earnings Per Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Stock Compensation Plan
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Employee stock options to purchase	1	13	1	13

Acquisitions - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Business Acquisition [Line Items]
Gain on formation of OneSubsea		$ 1,028
Acquisitions and investments, net of cash acquired	$ 556	$ 544
Shares of common stock issued in connection with acquisition	2.1
Value of common stock issued in connection with acquisition	$ 213
One Subsea
Business Acquisition [Line Items]
Ownership interest in joint venture	40.00%
Gain on formation of OneSubsea	$ 1,028
One Subsea \| Parent Company
Business Acquisition [Line Items]
Purchase price	$ 600

Inventories - Inventory Disclosure (Detail) - USD ($) $ in Millions	Sep. 30, 2014	Dec. 31, 2013
Inventory Disclosure [Abstract]
Raw materials & field materials	$ 2,637	$ 2,539
Work in process	296	261
Finished goods	1,769	1,803
Inventories	$ 4,702	$ 4,603

Fixed Assets - Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Sep. 30, 2014	Dec. 31, 2013
Property Plant And Equipment [Abstract]
Property, plant & equipment	$ 37,305	$ 35,164
Less: Accumulated depreciation	21,496	20,068
Fixed assets less accumulated depreciation	$ 15,809	$ 15,096

Fixed Assets - Depreciation Expense Charged to Income (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Property Plant And Equipment [Abstract]
Depreciation expense relating to fixed assets	$ 821	$ 788	$ 2,414	$ 2,324

Multiclient Seismic Data - Multiclient Seismic Data Table (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2014 USD ($)
Goodwill Abstract
Opening balance	$ 667
Capitalized in period	212
Charged to expense	(128)
Ending balance	$ 751

Goodwill - Changes in Carrying Amount of Goodwill (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2014 USD ($)
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 14,706
Acquisitions	559
Impact of changes in exchange rates	(22)
Goodwill, Ending Balance	15,243
Reservoir Characterization
Goodwill [Line Items]
Goodwill, Beginning Balance	3,737
Acquisitions	15
Reallocation	83
Impact of changes in exchange rates	(9)
Goodwill, Ending Balance	3,826
Drilling
Goodwill [Line Items]
Goodwill, Beginning Balance	8,315
Acquisitions	223
Reallocation	(83)
Impact of changes in exchange rates	(6)
Goodwill, Ending Balance	8,449
Production
Goodwill [Line Items]
Goodwill, Beginning Balance	2,654
Acquisitions	321
Impact of changes in exchange rates	(7)
Goodwill, Ending Balance	$ 2,968

Intangible Assets - Schedule of Intangible Assets by Major Class (Detail) - USD ($) $ in Millions	Sep. 30, 2014	Dec. 31, 2013
Intangible Assets By Major Class [Line Items]
Gross Book Value	$ 6,432	$ 6,305
Accumulated Amortization	1,742	1,596
Net Book Value	4,690	4,709
Technology/Technical Know-How
Intangible Assets By Major Class [Line Items]
Gross Book Value	1,960	1,960
Accumulated Amortization	681	597
Net Book Value	1,279	1,363
Tradenames
Intangible Assets By Major Class [Line Items]
Gross Book Value	1,640	1,647
Accumulated Amortization	301	257
Net Book Value	1,339	1,390
Customer Relationships
Intangible Assets By Major Class [Line Items]
Gross Book Value	2,460	2,263
Accumulated Amortization	493	407
Net Book Value	1,967	1,856
Other
Intangible Assets By Major Class [Line Items]
Gross Book Value	372	435
Accumulated Amortization	267	335
Net Book Value	$ 105	$ 100

Intangible Assets - Amortization Expense Charged to Income for Intangible Assets (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expenses	$ 88	$ 80	$ 257	$ 244

Intangible Assets - Additional Information (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2014 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Weighted average amortization period for all intangible assets (years)	20 years
Estimated amortization charged to income, 2014	$ 90
Estimated amortization charged to income, 2015	358
Estimated amortization charged to income, 2016	349
Estimated amortization charged to income, 2017	340
Estimated amortization charged to income, 2018	331
Estimated amortization charged to income, 2019	$ 320

Long-term Debt - Long-term Debt (Detail) - USD ($) $ in Millions	Sep. 30, 2014	Dec. 31, 2013
Proforma Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 11,626	$ 10,393
3.30% Senior Notes due 2021
Proforma Debt Instrument [Line Items]
Long-term debt, carrying amount	1,596	1,596
3.65% Senior Notes due 2023
Proforma Debt Instrument [Line Items]
Long-term debt, carrying amount	1,495	1,495
2.75% Guaranteed Notes due 2015
Proforma Debt Instrument [Line Items]
Long-term debt, carrying amount	1,273	1,373
1.95% Senior Notes due 2016
Proforma Debt Instrument [Line Items]
Long-term debt, carrying amount	1,099	1,099
4.20% Senior Notes due 2021
Proforma Debt Instrument [Line Items]
Long-term debt, carrying amount	1,100	1,099
1.25% Senior Notes due 2017
Proforma Debt Instrument [Line Items]
Long-term debt, carrying amount	1,000	999
2.40% Senior Notes due 2022
Proforma Debt Instrument [Line Items]
Long-term debt, carrying amount	999	999
1.50% Guaranteed Notes due 2019
Proforma Debt Instrument [Line Items]
Long-term debt, carrying amount	656	697
2.65% Senior Notes due 2016
Proforma Debt Instrument [Line Items]
Long-term debt, carrying amount	500	500
Commercial Paper Borrowings
Proforma Debt Instrument [Line Items]
Long-term debt, carrying amount	1,392
Other
Proforma Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 516	$ 536

Long-term Debt - Long-term Debt (Parenthetical) (Detail)	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
3.30% Senior Notes due 2021
Proforma Debt Instrument [Line Items]
Debt instrument interest rate	3.30%	3.30%
Debt instrument maturity date	2021
3.65% Senior Notes due 2023
Proforma Debt Instrument [Line Items]
Debt instrument interest rate	3.65%	3.65%
Debt instrument maturity date	2023
2.75% Guaranteed Notes due 2015
Proforma Debt Instrument [Line Items]
Debt instrument interest rate	2.75%	2.75%
Debt instrument maturity date	2015
1.95% Senior Notes due 2016
Proforma Debt Instrument [Line Items]
Debt instrument interest rate	1.95%	1.95%
Debt instrument maturity date	2016
4.20% Senior Notes due 2021
Proforma Debt Instrument [Line Items]
Debt instrument interest rate	4.20%	4.20%
Debt instrument maturity date	2021
1.25% Senior Notes due 2017
Proforma Debt Instrument [Line Items]
Debt instrument interest rate	1.25%	1.25%
Debt instrument maturity date	2017
2.40% Senior Notes due 2022
Proforma Debt Instrument [Line Items]
Debt instrument interest rate	2.40%	2.40%
Debt instrument maturity date	2022
1.50% Guaranteed Notes due 2019
Proforma Debt Instrument [Line Items]
Debt instrument interest rate	1.50%	1.50%
Debt instrument maturity date	2019
2.65% Senior Notes due 2016
Proforma Debt Instrument [Line Items]
Debt instrument interest rate	2.65%	2.65%
Debt instrument maturity date	2016

Long-term Debt - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2014	Dec. 31, 2013
Proforma Debt Instrument [Line Items]
Long-term debt, fair value	$ 11,900	$ 10,400
Commercial Paper
Proforma Debt Instrument [Line Items]
Committed debt facility agreement aggregated	$ 1,400
Commercial Paper \| Long-term debt current portion
Proforma Debt Instrument [Line Items]
Committed debt facility agreement aggregated		$ 95

Derivative Instruments and Hedging Activities - Additional Information (Detail) $ in Millions, € in Billions	9 Months Ended	12 Months Ended
	Sep. 30, 2014 USD ($) Country	Dec. 31, 2013 EUR (€)
Derivative [Line Items]
Number of countries in which Schlumberger conducts business \| Country	85
Recognized a cumulative net loss in equity relating to revaluation of foreign currency forward contracts and foreign currency options designated as cash flow hedges	$ (50)
Fixed rate debt aggregate, after taking into account the effects of the interest rate swaps	9,100
Variable rate debt aggregate, after taking into account the effects of the interest rate swaps	4,000
Short-term investments and Fixed income investments, held to maturity	4,100
1.50% Guaranteed Notes due 2019
Derivative [Line Items]
Notional amount of interest rate swap \| €		€ 0.5
Guaranteed notes face amount \| €		€ 0.5
Foreign exchange contracts
Derivative [Line Items]
Notional amount of interest rate swap	6,200
Foreign exchange contracts \| Debt \| Derivatives designated as hedges
Derivative [Line Items]
Notional amount of interest rate swap	$ 2,500
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]
Senior note floating interest rate	three-month LIBOR plus approximately 64 basis points.
Basis points		0.64%

Derivative Instruments and Hedging Activities - Fair Values of Outstanding Derivative Instruments (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Derivative Assets
Derivative Assets			$ 15		$ 163
Foreign exchange contracts
Derivative Assets
Derivative Assets	$ (53)	$ 30	(59)	$ (15)
Derivatives designated as hedges
Derivative Assets
Derivative Assets	5		5		149
Derivative Liabilities
Derivative Liabilities	140		140		15
Derivatives designated as hedges \| Foreign exchange contracts \| Other current assets
Derivative Assets
Derivative Assets	3		3		98
Derivatives designated as hedges \| Foreign exchange contracts \| Other Assets
Derivative Assets
Derivative Assets	2		2		24
Derivatives designated as hedges \| Foreign exchange contracts \| Accounts payable and accrued liabilities
Derivative Liabilities
Derivative Liabilities	42		42		14
Derivatives designated as hedges \| Foreign exchange contracts \| Other Liabilities
Derivative Liabilities
Derivative Liabilities	83		83		1
Derivatives designated as hedges \| Interest rate swap \| Other Assets
Derivative Assets
Derivative Assets					27
Derivatives designated as hedges \| Interest rate swap \| Other Liabilities
Derivative Liabilities
Derivative Liabilities	15		15
Derivatives not designated as hedges
Derivative Assets
Derivative Assets			10		14
Derivative Liabilities
Derivative Liabilities	150		150		17
Derivatives not designated as hedges \| Foreign exchange contracts \| Other current assets
Derivative Assets
Derivative Assets			10		10
Derivatives not designated as hedges \| Foreign exchange contracts \| Other Assets
Derivative Assets
Derivative Assets					4
Derivatives not designated as hedges \| Foreign exchange contracts \| Accounts payable and accrued liabilities
Derivative Liabilities
Derivative Liabilities	$ 10		$ 10		$ 2

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) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivatives designated as fair value hedges \| Interest rate swap \| Interest expense
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ (44)		$ (53)	$ (2)
Derivatives not designated as hedges \| Foreign exchange contracts \| Cost of revenue
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ (26)	$ 31	$ (21)	$ 8

Derivative Instruments and Hedging Activities - Effect of Derivative Instruments in Cash Flow Hedging Relationships on Income and Accumulated Other Comprehensive Loss (AOCL) (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Reclassified from Accumulated OCL into Income			$ 15		$ 163
Foreign exchange contracts
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Reclassified from Accumulated OCL into Income	$ (53)	$ 30	(59)	$ (15)
Gain (Loss) Recognized in Accumulated OCL	(151)	76	(138)	(27)
Foreign exchange contracts \| Cost of revenue
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Reclassified from Accumulated OCL into Income	(54)	33	(62)	(8)
Foreign exchange contracts \| Research & engineering
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Reclassified from Accumulated OCL into Income	$ 1	$ (3)	$ 3	$ (7)

Income Tax - Income Tax Disclosure Table (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]
United States	$ 522	$ 494	$ 1,671	$ 1,425
Outside United States	1,998	1,737	5,252	5,096
Income (loss) from continuing operations before income taxes and minority interest, Total	$ 2,520	$ 2,231	$ 6,923	$ 6,521

Income Tax - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Income Tax Examination [Line Items]
Pretax provision relating to accounts receivable				$ (572)
Deferred tax assets, valuation allowances relating to net operating losses in certain countries	$ 234		$ 234		$ 238
US federal statutory rate	35.00%	35.00%	35.00%	35.00%
Domestic Country
Income Tax Examination [Line Items]
Pretax provision relating to accounts receivable				$ 53
Foreign Country
Income Tax Examination [Line Items]
Pretax provision relating to accounts receivable				$ 625

Income Tax - Components of Net Deferred Tax Assets (Detail) - USD ($) $ in Millions	Sep. 30, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Postretirement benefits	$ 206	$ 236
Intangible assets	(1,497)	(1,502)
Investments in non-US subsidiaries	(228)	(282)
Other, net	73	128
Net deferred tax assets	$ (1,446)	$ (1,420)

Income Tax - Components of Consolidated Income Taxes (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Current:
United States — Federal	$ 202	$ 116	$ 479	$ 435
United States — State	19	16	38	51
Outside United States	342	313	1,033	859
Current Income Tax Expense (Benefit), Total	563	445	1,550	1,345
Deferred:
United States — Federal	(38)	36	(27)	12
United States — State	(4)	2	(2)	(1)
Outside United States	35	26	9	28
Valuation allowance		(3)		(23)
Deferred income taxes	(7)	61	(20)	16
Consolidated taxes on income	$ 556	$ 506	$ 1,530	$ 1,361

Income Tax - Reconciliation of US Statutory Federal Tax Rate (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]
US federal statutory rate	35.00%	35.00%	35.00%	35.00%
Non-US income taxed at different rates	(12.00%)	(12.00%)	(11.00%)	(12.00%)
Charges and credits (See Note 2)				(2.00%)
Other	(1.00%)		(2.00%)
Effective income tax rate	22.00%	23.00%	22.00%	21.00%

Contingencies - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Jun. 30, 2014	Sep. 30, 2014	Sep. 30, 2013
Commitments And Contingencies Disclosure [Abstract]
Charge recorded within loss from discontinued operations	$ (205)	$ (205)	$ (69)

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

3 Months Ended

9 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Segment Reporting Information [Line Items]

Revenue

$ 12,646

$ 11,608

$ 35,939

$ 33,360

Income before taxes

2,520

2,231

6,923

6,521

Pretax operating income

Segment Reporting Information [Line Items]

Income before taxes

2,806

2,496

7,795

6,740

Interest income

Segment Reporting Information [Line Items]

Income before taxes

^[1]

^[2]

Interest expense

Segment Reporting Information [Line Items]

Income before taxes

(84)

^[3]

(92)

^[3]

(267)

^[4]

(277)

^[4]

Charges and credits

Segment Reporting Information [Line Items]

Income before taxes

^[5]

572

Operating Segments | Reservoir Characterization

Segment Reporting Information [Line Items]

Revenue

3,184

3,289

9,131

9,157

Income before taxes

954

988

2,651

2,629

Operating Segments | Drilling

Segment Reporting Information [Line Items]

Revenue

4,821

4,358

13,804

12,659

Income before taxes

1,045

889

2,906

2,413

Operating Segments | Production

Segment Reporting Information [Line Items]

Revenue

4,697

4,024

13,157

11,708

Income before taxes

857

707

2,319

1,888

Eliminations & other

Segment Reporting Information [Line Items]

Revenue

(56)

(63)

(153)

(164)

Income before taxes

(50)

(88)

(81)

(190)

Corporate & other

Segment Reporting Information [Line Items]

Income before taxes

^[6]

$ (210)

$ (179)

$ (628)

$ (529)

[1]	Interest income excludes amounts which are included in the segments’ income ($5 million in 2014; $3 million in 2013).
[2]	Interest income excludes amounts which are included in the segments’ income ($15 million in 2014; $6 million in 2013).
[3]	Interest expense excludes amounts which are included in the segments’ income ($6 million in 2014; $6 million in 2013).
[4]	Interest expense excludes amounts which are included in the segments’ income ($15 million in 2014; $17 million in 2013).
[5]	See Note 2 – Charges and Credits.
[6]	Comprised principally of certain corporate expenses not allocated to the segments, interest on postretirement medical benefits, stock-based compensation costs, amortization expense associated with certain intangible assets and other nonoperating items.

Segment Information - Schedule of Segment Reporting Information, by Segment (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]
Interest expense	$ 90	$ 98	$ 282	$ 294
Interest Income Excluded From Segment Information
Segment Reporting Information [Line Items]
Interest income included in the segment results	5	3	15	6
Interest Expense Excluded From Segment Information
Segment Reporting Information [Line Items]
Interest expense	$ 6	$ 6	$ 15	$ 17

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		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
US Plan Assets
Defined Benefit Plan Disclosure [Line Items]
Service cost — benefits earned during period	$ 19	$ 19	$ 54	$ 60
Interest cost on projected benefit obligation	47	38	123	113
Expected return on plan assets	(60)	(47)	(156)	(150)
Amortization of prior service cost	3	3	9	9
Amortization of net loss	17	28	61	91
Total pension cost	26	41	91	123
International
Defined Benefit Plan Disclosure [Line Items]
Service cost — benefits earned during period	38	28	98	95
Interest cost on projected benefit obligation	90	65	218	189
Expected return on plan assets	(143)	(88)	(343)	(288)
Amortization of prior service cost	38	29	90	88
Amortization of net loss	18	43	70	117
Total pension cost	41	77	133	201
Postretirement medical plan
Defined Benefit Plan Disclosure [Line Items]
Service cost — benefits earned during period	10	12	32	36
Interest cost on projected benefit obligation	15	14	45	42
Expected return on plan assets	(12)	(9)	(33)	(28)
Amortization of prior service cost	(1)	(1)	(3)	(3)
Amortization of net loss	(3)	2	1	17
Total pension cost	$ 9	$ 18	$ 42	$ 64

Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	$ (2,554)	$ (3,888)
Other comprehensive income (loss) before reclassifications	(446)	(131)
Amounts reclassified from accumulated other comprehensive loss	287	333
Income taxes	(28)	(40)
Net other comprehensive income (loss)	(187)	162
Balance	(2,741)	(3,726)
Currency Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(1,068)	(918)
Other comprehensive income (loss) before reclassifications	(176)	(139)
Net other comprehensive income (loss)	(176)	(139)
Balance	(1,244)	(1,057)
Fair Value of Derivatives
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	29	30
Other comprehensive income (loss) before reclassifications	(138)	(27)
Amounts reclassified from accumulated other comprehensive loss	59	15
Net other comprehensive income (loss)	(79)	(12)
Balance	(50)	18
Pension and Other Postretirement Benefit Plans
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(1,691)	(3,141)
Other comprehensive income (loss) before reclassifications		(23)
Amounts reclassified from accumulated other comprehensive loss	228	318
Income taxes	(28)	(40)
Net other comprehensive income (loss)	200	255
Balance	(1,491)	(2,886)
Unrealized Gains on Marketable Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	176	141
Other comprehensive income (loss) before reclassifications	(132)	58
Net other comprehensive income (loss)	(132)	58
Balance	$ 44	$ 199

Discontinued Operations - Discontinued Operations (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Discontinued Operations And Disposal Groups [Abstract]
Revenue		$ 102
Loss before taxes	$ (205)	(63)
Tax expense		(6)
Loss from discontinued operations	$ (205)	$ (69)