Schlumberger Limited (SLB) 10-Q 22 Oct 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014
Document And Entity Information [Abstract]	'
Document Type	'10-Q
Amendment Flag	'false
Document Period End Date	30-Sep-14
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_INCO

CONSOLIDATED STATEMENT OF INCOME (USD $)	3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	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_COMP

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	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

CONSOLIDATED BALANCE SHEET (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
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_Par

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

CONSOLIDATED_STATEMENT_OF_CASH

CONSOLIDATED STATEMENT OF CASH FLOWS (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013
Cash flows from operating activities:	'		'
Net income	$5,188		$5,091
Add: Loss from discontinued operations	205		69
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	3,029	[1]	2,891	[1]
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	-779	[2]	-1,215	[2]
Increase in inventories	-61	[2]	-96	[2]
Decrease in other current assets	112	[2]	28	[2]
Increase in other assets	-89	[2]	-135	[2]
(Decrease) increase in accounts payable and accrued liabilities	-256	[2]	189	[2]
(Decrease) increase in liability for taxes on income	-7	[2]	15	[2]
(Decrease) increase in other liabilities	-78	[2]	2	[2]
Other	-108	[2]	175	[2]
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	3		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		3
NET CASH USED IN FINANCING ACTIVITIES	-4,673		-1,554
Cash flows provided by (used in) discontinued operations - operating activities	24		-2
Cash flows provided by (used in) discontinued operations - investing activities	'		-28
Cash flows provided by (used in) discontinued operations	24		-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_EQUI

CONSOLIDATED STATEMENT OF EQUITY (USD $)	Total	Common Stock Issued	Common Stock In Treasury	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
In Millions
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
Balance, shares at Dec. 31, 2013	1,307	1,434	-127	'	'	'
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
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 at Sep. 30, 2014	$40,687	$12,428	($10,725)	$41,543	($2,741)	$182
Balance, shares at Sep. 30, 2014	1,287	1,434	-147	'	'	'

CONSOLIDATED_STATEMENT_OF_EQUI1

CONSOLIDATED STATEMENT OF EQUITY (Parenthetical) (Retained Earnings, USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Retained Earnings	'	'
Dividends declared, per share	$1.20	$0.94

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	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

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

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		Earnings per Share from Continuing Operations
										Shares Outstanding
	Third Quarter
	Basic	$	1,949		1,294	$	1.51	$	1,715		1,322	$	1.3
	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		Earnings per Share from Continuing Operations
										Shares Outstanding
	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

Acquisitions	9 Months Ended
	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.

Inventories

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

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

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

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

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.

Longterm_Debt

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_Hed

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	)

Income_Tax

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

Contingencies	9 Months Ended
	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

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			Revenue			Income
					before						before
					taxes						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			Revenue			Income
					before						before
					taxes						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
	(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 ($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_Postretireme

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_Comprehensiv

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	)

Discontinued_Operations

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	)

Basis_of_Presentation_Policies

Basis of Presentation (Policies)	9 Months Ended
	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

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

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		Earnings per Share from Continuing Operations
										Shares Outstanding
	Third Quarter
	Basic	$	1,949		1,294	$	1.51	$	1,715		1,322	$	1.3
	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		Earnings per Share from Continuing Operations
										Shares Outstanding
	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	'
	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

Inventories_Tables

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

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_Table

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

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

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

Longterm_Debt_Tables

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

Derivative_Instruments_and_Hed1

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

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

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			Revenue			Income
					before						before
					taxes						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			Revenue			Income
					before						before
					taxes						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
	(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 ($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_Postretireme1

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_Comprehensiv1

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

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	)

Charges_and_Credits_Additional

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

Charges_and_Credits_Summary_of

Charges and Credits - Summary of Charges (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	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_Reconciliat

Earnings Per Share - Reconciliation of Earnings Per Share from Continuing Operations (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	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

Earnings Per Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail) (Stock Compensation Plan)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	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_Inform

Acquisitions - Additional Information (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	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_Disclosu

Inventories - Inventory Disclosure (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
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_an

Fixed Assets - Property, Plant and Equipment (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
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_Expe

Fixed Assets - Depreciation Expense Charged to Income (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	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_Multi

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

Goodwill_Changes_in_Carrying_A

Goodwill - Changes in Carrying Amount of Goodwill (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
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 - Schedule of Intangible Assets by Major Class (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
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

Intangible Assets - Amortization Expense Charged to Income for Intangible Assets (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	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_I

Intangible Assets - Additional Information (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
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

Longterm_Debt_Longterm_Debt_De

Long-term Debt - Long-term Debt (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
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

Longterm_Debt_Longterm_Debt_Pa

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	'

Longterm_Debt_Additional_Infor

Long-term Debt - Additional Information (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Proforma Debt Instrument [Line Items]	'	'
Long-term debt, fair value	$11,900,000,000	$10,400,000,000
Commercial Paper	'	'
Proforma Debt Instrument [Line Items]	'	'
Committed debt facility agreement aggregated	1,400,000,000	'
Commercial Paper | Long-term debt current portion	'	'
Proforma Debt Instrument [Line Items]	'	'
Committed debt facility agreement aggregated	'	$95,000,000

Derivative_Instruments_and_Hed2

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

Derivative_Instruments_and_Hed3

Derivative Instruments and Hedging Activities - Fair Values of Outstanding Derivative Instruments (Detail) (USD $)

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Derivatives designated as hedges

Derivatives designated as hedges

Derivatives designated as hedges

Derivatives designated as hedges

Derivatives designated as hedges

Derivatives designated as hedges

Derivatives designated as hedges

Derivatives designated as hedges

Derivatives designated as hedges

Derivatives designated as hedges

Derivatives designated as hedges

Derivatives designated as hedges

Derivatives not designated as hedges

Derivatives not designated as hedges

Derivatives not designated as hedges

Derivatives not designated as hedges

Derivatives not designated as hedges

Derivatives not designated as hedges

Derivatives not designated as hedges

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Interest rate swap

Interest rate swap

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Other current assets

Other current assets

Other Assets

Other Assets

Accounts payable and accrued liabilities

Accounts payable and accrued liabilities

Other Liabilities

Other Liabilities

Other Assets

Other Liabilities

Other current assets

Other current assets

Other Assets

Accounts payable and accrued liabilities

Accounts payable and accrued liabilities

Derivative Assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Assets

'

'

'

'

'

'

$5

$149

$3

$98

$2

$24

'

'

'

'

$27

'

'

'

'

'

'

'

'

Derivative Assets

15

163

-53

30

-59

-15

'

'

'

'

'

'

'

'

'

'

'

'

10

14

10

10

4

'

'

Derivative Liabilities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Liabilities

'

'

'

'

'

'

$140

$15

'

'

'

'

$42

$14

$83

$1

'

$15

$150

$17

'

'

'

$10

$2

Derivative_Instruments_and_Hed4

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 $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	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_Hed5

Derivative Instruments and Hedging Activities - Effect of Derivative Instruments in Cash Flow Hedging Relationships on Income and Accumulated Other Comprehensive Loss (AOCL) (Detail) (USD $)

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

In Millions, unless otherwise specified

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Foreign exchange contracts

Cost of revenue

Cost of revenue

Cost of revenue

Cost of revenue

Research & engineering

Research & engineering

Research & engineering

Research & engineering

Derivative Instruments Gain Loss [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (Loss) Reclassified from Accumulated OCL into Income

$15

$163

($53)

$30

($59)

($15)

($54)

$33

($62)

($8)

$1

($3)

$3

($7)

Gain (Loss) Recognized in Accumulated OCL

'

'

($151)

$76

($138)

($27)

'

'

'

'

'

'

'

'

Income_Tax_Income_Tax_Disclosu

Income Tax - Income Tax Disclosure Table (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	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_Informat

Income Tax - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	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_D

Income Tax - Components of Net Deferred Tax Assets (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
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_Conso

Income Tax - Components of Consolidated Income Taxes (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Current:	'	'	'	'
United States b Federal	$202	$116	$479	$435
United States b 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 b Federal	-38	36	-27	12
United States b 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_U

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_Infor

Contingencies - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended
In Millions, unless otherwise specified	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_o

Segment Information - Schedule of Segment Reporting Information, by Segment (Detail) (USD $)	3 Months Ended				9 Months Ended
In Millions, unless otherwise specified	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	8	[1]	6	[1]	23	[2]	15	[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	'		'		'		572	[5]
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	($210)	[6]	($179)	[6]	($628)	[6]	($529)	[6]
[1]	Interest income excludes amounts which are included in the segmentsb income ($5 million in 2014; $3 million in 2013).
[2]	Interest income excludes amounts which are included in the segmentsb income ($15 million in 2014; $6 million in 2013).
[3]	Interest expense excludes amounts which are included in the segmentsb income ($6 million in 2014; $6 million in 2013).
[4]	Interest expense excludes amounts which are included in the segmentsb income ($15 million in 2014; $17 million in 2013).
[5]	See Note 2 b 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_o1

Segment Information - Schedule of Segment Reporting Information, by Segment (Parenthetical) (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	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_Postretireme2

Pension and Other Postretirement Benefit Plans - Net Pension Cost for Schlumberger Pension Plans and US Postretirement Medical Plan (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
US Plan Assets	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Service cost b 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 b 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 b 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_Comprehensiv2

Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	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_Discon

Discontinued Operations - Discontinued Operations (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	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)