Schlumberger Limited (SLB) 10-K31 Jan 142013 FY Annual reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Billions, except Share data, unless otherwise specified	Dec. 31, 2013	Jun. 30, 2013
Document Document And Entity Information [Line Items]	'	'
Document Type	'10-K	'
Amendment Flag	'false	'
Document Period End Date	31-Dec-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'FY	'
Trading Symbol	'SLB	'
Entity Registrant Name	'SCHLUMBERGER LTD /NV/	'
Entity Central Index Key	'0000087347	'
Current Fiscal Year End Date	'--12-31	'
Entity Well-known Seasoned Issuer	'Yes	'
Entity Current Reporting Status	'Yes	'
Entity Voluntary Filers	'No	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	1,307,330,369	'
Entity Public Float	'	$94.80

CONSOLIDATED_STATEMENT_OF_INCO

CONSOLIDATED STATEMENT OF INCOME (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Revenue	$45,266		$41,731		$36,579
Interest and other income	165		172		130
Gain on formation of OneSubsea	1,028		'		'
Expenses	'		'		'
Cost of revenue	35,331		32,885		28,802
Research & engineering	1,174		1,153		1,061
General & administrative	416		405		417
Merger & integration	'		128		113
Impairment & other	456		33		'
Interest	391		340		298
Income from continuing operations before taxes	8,691		6,959		6,018
Taxes on income	1,848		1,700		1,492
Income from continuing operations	6,843		5,259		4,526
Income (loss) from discontinued operations	-69		260		481
Net income	6,774		5,519		5,007
Net income attributable to noncontrolling interests	42		29		10
Net income attributable to Schlumberger	6,732		5,490		4,997
Schlumberger amounts attributable to:	'		'		'
Income from continuing operations	6,801		5,230		4,516
Income (loss) from discontinued operations	-69		260		481
Net income	$6,732		$5,490		$4,997
Basic earnings per share of Schlumberger:	'		'		'
Income from continuing operations	$5.14		$3.93		$3.35
Income (loss) from discontinued operations	($0.05)		$0.20		$0.36
Net income	$5.09	[1]	$4.13	[1]	$3.70	[1]
Diluted earnings per share of Schlumberger:	'		'		'
Income from continuing operations	$5.10		$3.91		$3.32
Income (loss) from discontinued operations	($0.05)		$0.19		$0.35
Net income	$5.05		$4.10		$3.67
Average shares outstanding:	'		'		'
Basic	1,323		1,330		1,349
Assuming dilution	1,333		1,339		1,361

[1]	Amounts may not add due to rounding.

CONSOLIDATED_STATEMENT_OF_COMP

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income	$6,774	$5,519	$5,007
Currency translation adjustments	'	'	'
Unrealized net change arising during the period	-151	76	-82
Marketable securities	'	'	'
Unrealized gain arising during the period	35	141	'
Derivatives	'	'	'
Net derivatives gain (loss) on hedging transactions	49	92	-79
Reclassification to net income of net realized (gain) loss	-50	-36	8
Actuarial gain (loss)	'	'	'
Actuarial gain (loss) arising during the period	1,328	-1,016	-1,008
Amortization to net income of net actuarial loss	300	187	133
Prior service cost	'	'	'
Prior service gain arising during the period	'	'	1
Amortization to net income of net prior service cost	125	125	121
Income taxes on pension and other postretirement benefit plans	-302	100	117
Comprehensive income	8,108	5,188	4,218
Comprehensive income attributable to noncontrolling interests	42	29	10
Comprehensive income attributable to Schlumberger	$8,066	$5,159	$4,208

CONSOLIDATED_BALANCE_SHEET

CONSOLIDATED BALANCE SHEET (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current Assets	'	'
Cash	$3,472	$1,905
Short-term investments	4,898	4,369
Receivables less allowance for doubtful accounts (2013 - $384; 2012 - $202)	11,497	11,351
Inventories	4,603	4,785
Deferred taxes	288	343
Other current assets	1,467	1,403
Current assets total	26,225	24,156
Fixed Income Investments, held to maturity	363	245
Investments in Affiliated Companies	3,317	1,502
Fixed Assets less accumulated depreciation	15,096	14,780
Multiclient Seismic Data	667	518
Goodwill	14,706	14,585
Intangible Assets	4,709	4,802
Other Assets	2,017	959
Total Assets	67,100	61,547
Current Liabilities	'	'
Accounts payable and accrued liabilities	8,837	8,453
Estimated liability for taxes on income	1,490	1,426
Long-term debt - current portion	1,819	1,163
Short-term borrowings	964	958
Dividends payable	415	368
Current Liabilities Total	13,525	12,368
Long-term Debt	10,393	9,509
Postretirement Benefits	670	2,169
Deferred Taxes	1,708	1,493
Other Liabilities	1,169	1,150
Total Liabilities	27,465	26,689
Equity	'	'
Common stock	12,192	11,912
Treasury stock	-8,135	-6,160
Retained earnings	37,966	32,887
Accumulated other comprehensive loss	-2,554	-3,888
Schlumberger stockholdersâ€™ equity	39,469	34,751
Noncontrolling interests	166	107
Total equity	39,635	34,858
Liabilities and stockholders equity	$67,100	$61,547

CONSOLIDATED_BALANCE_SHEET_Par

CONSOLIDATED BALANCE SHEET (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Millions, unless otherwise specified
Allowance for doubtful accounts on receivable	$384	$202	$177	$185

CONSOLIDATED_STATEMENT_OF_CASH

CONSOLIDATED STATEMENT OF CASH FLOWS (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Cash flows from operating activities:	'		'		'
Net income	$6,774		$5,519		$5,007
Less: (Income) loss from discontinued operations	69		-260		-481
Adjustments to reconcile net income to net cash provided by operating activities:	'		'		'
Depreciation and amortization	3,666	[1]	3,500	[1]	3,274	[1]
Gain on formation of OneSubsea	-1,028		'		'
Earnings of companies carried at equity, less dividends received	-71		-61		-64
Deferred income taxes	-105		-76		-26
Stock-based compensation expense	315		335		272
Pension and other postretirement benefits expense	518		403		365
Impairment of equity investments	364		'		'
Other non-cash items	371		97		203
Pension and other postretirement benefits funding	-538		-673		-601
Change in operating assets and liabilities:	'		'		'
Increase in receivables	-858	[2]	-2,087	[2]	-1,402	[2]
Decrease (increase) in inventories	188	[2]	-645	[2]	-863	[2]
Decrease (increase) in other current assets	17	[2]	-350	[2]	-58	[2]
Increase in other assets	-767	[2]	-253	[2]	-74	[2]
Increase in accounts payable and accrued liabilities	654	[2]	876	[2]	639	[2]
Increase (decrease) in estimated liability for taxes on income	34	[2]	125	[2]	-549	[2]
Increase in other liabilities	60	[2]	1	[2]	169	[2]
Other	125	[2]	92	[2]	69	[2]
NET CASH PROVIDED BY OPERATING ACTIVITIES	9,788		6,543		5,880
Cash flows from investing activities:	'		'		'
Capital expenditures	-3,943		-4,694		-4,004
Multiclient seismic data capitalized	-394		-351		-289
Payment for OneSubsea transaction	-600		'		'
Other business acquisitions and investments, net of cash acquired	-610		-845		-186
(Purchase) sale of investments, net	-648		-1,228		351
Other	218		-55		230
NET CASH USED IN INVESTING ACTIVITIES	-5,977		-7,173		-3,898
Cash flows from financing activities:	'		'		'
Dividends paid	-1,608		-1,432		-1,300
Proceeds from employee stock purchase plan	270		247		208
Proceeds from exercise of stock options	267		163		230
Stock repurchase program	-2,596		-972		-2,998
Proceeds from issuance of long-term debt	4,554		2,832		6,884
Repayment of long-term debt	-3,141		-1,817		-4,992
Net increase (decrease) in short-term borrowings	37		621		-119
Other	18		19		-613
NET CASH USED IN FINANCING ACTIVITIES	-2,199		-339		-2,700
Cash flow from discontinued operations - operating activities	-2		145		289
Cash flow from discontinued operations - investing activities	-28		1,011		373
Cash flow from discontinued operations	-30		1,156		662
Net increase (decrease) in cash before translation effect	1,582		187		-56
Translation effect on cash	-15		13		-3
Cash, beginning of year	1,905		1,705		1,764
Cash, end of year	$3,472		$1,905		$1,705

[1]	Includes multiclient seismic data costs.
[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	Total	Common Stock Issued	Common Stock In Treasury	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balance at Dec. 31, 2010	$31,444	$11,920	($3,136)	$25,210	($2,768)	$218
Balance, shares at Dec. 31, 2010	1,361	1,434	-73	'	'	'
Net income	5,013	'	'	4,997	'	16
Currency translation adjustments	-82	'	'	'	-82	'
Changes in fair value of derivatives	-71	'	'	'	-71	'
Pension and other postretirement benefit plans	-636	'	'	'	-636	'
Shares sold to optionees less shares exchanged	230	-29	259	'	'	'
Shares sold to optionees, less shares exchanged, shares	6	'	6	'	'	'
Vesting of restricted stock	'	-39	39	'	'	'
Vesting of restricted stock, shares	1	'	1	'	'	'
Shares issued under employee stock purchase plan	208	53	155	'	'	'
Shares issued under employee stock purchase plan, shares	3	'	3	'	'	'
Stock repurchase program	-2,998	'	-2,998	'	'	'
Stock repurchase program, shares	37	'	37	'	'	'
Stock-based compensation cost	272	272	'	'	'	'
Acquisition of noncontrolling interests	-633	-553	'	'	'	-80
Dividends declared	-1,347	'	'	-1,347	'	'
Other	-8	15	2	'	'	-25
Stock repurchase program, shares	-37	'	-37	'	'	'
Balance at Dec. 31, 2011	31,392	11,639	-5,679	28,860	-3,557	129
Balance, shares at Dec. 31, 2011	1,334	1,434	-100	'	'	'
Net income	5,519	'	'	5,490	'	29
Currency translation adjustments	71	'	'	'	71	'
Change in unrealized gain on marketable securities	141	'	'	'	141	'
Changes in fair value of derivatives	56	'	'	'	56	'
Pension and other postretirement benefit plans	-604	'	'	'	-604	'
Shares sold to optionees less shares exchanged	163	-75	238	'	'	'
Shares sold to optionees, less shares exchanged, shares	4	'	4	'	'	'
Vesting of restricted stock	'	-20	20	'	'	'
Vesting of restricted stock, shares	4	'	4	'	'	'
Shares issued under employee stock purchase plan	247	16	231	'	'	'
Stock repurchase program	-972	'	-972	'	'	'
Stock repurchase program, shares	14	'	14	'	'	'
Stock-based compensation cost	335	335	'	'	'	'
Sale of CE Franklin	-63	'	'	'	5	-68
Dividends declared	-1,463	'	'	-1,463	'	'
Other	36	17	2	'	'	17
Stock repurchase program, shares	-14	'	-14	'	'	'
Balance at Dec. 31, 2012	34,858	11,912	-6,160	32,887	-3,888	107
Balance, shares at Dec. 31, 2012	1,328	1,434	-106	'	'	'
Net income	6,774	'	'	6,732	'	42
Currency translation adjustments	-151	'	'	'	-151	'
Change in unrealized gain on marketable securities	35	'	'	'	35	'
Changes in fair value of derivatives	-1	'	'	'	-1	'
Pension and other postretirement benefit plans	1,451	'	'	'	1,451	'
Shares sold to optionees less shares exchanged	267	-44	311	'	'	'
Shares sold to optionees, less shares exchanged, shares	5	'	5	'	'	'
Vesting of restricted stock	'	-56	56	'	'	'
Vesting of restricted stock, shares	1	'	1	'	'	'
Shares issued under employee stock purchase plan	270	18	252	'	'	'
Shares issued under employee stock purchase plan, shares	4	'	4	'	'	'
Stock repurchase program	-2,596	'	-2,596	'	'	'
Stock repurchase program, shares	31	'	31	'	'	'
Stock-based compensation cost	315	315	'	'	'	'
Acquisition of noncontrolling interests	22	'	'	'	'	22
Dividends declared	-1,653	'	'	-1,653	'	'
Other	44	47	2	'	'	-5
Stock repurchase program, shares	-31	'	-31	'	'	'
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	'	'	'

CONSOLIDATED_STATEMENT_OF_EQUI1

CONSOLIDATED STATEMENT OF EQUITY (Parenthetical) (Retained Earnings, USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Retained Earnings	'	'	'
Dividends declared, per share	$1.25	$1.10	$1

Business_Description

Business Description	12 Months Ended
Business Description	Dec. 31, 2013
Business Description	'
	1. Business Description
	Schlumberger Limited (Schlumberger N.V., incorporated in Curaçao) and its consolidated subsidiaries (collectively, “Schlumberger”) comprise the world’s leading supplier of technology, integrated project management and information solutions to the international oil and gas exploration and production industry.

Summary_of_Accounting_Policies

Summary of Accounting Policies

12 Months Ended

Dec. 31, 2013

Summary of Accounting Policies

2. Summary of Accounting Policies

The Consolidated Financial Statements of Schlumberger have been prepared in accordance with accounting principles generally accepted in the United States of America.

Principles of Consolidation

The accompanying Consolidated Financial Statements include the accounts of Schlumberger, its wholly-owned subsidiaries, and other subsidiaries over which it exercises a controlling financial interest. All significant intercompany transactions and balances have been eliminated.

Reclassifications

Certain prior year items have been reclassified to conform to the current year presentation.

Use of Estimates

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. On an on-going basis, Schlumberger evaluates its estimates, including those related to collectibility of accounts receivable; recoverability of deferred costs, goodwill, intangible assets and investments in affiliates; income taxes; multiclient seismic data; contingencies and actuarial assumptions for employee benefit plans. Schlumberger bases its estimates on historical experience and on other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

Revenue Recognition

Schlumberger recognizes revenue based upon purchase orders, contracts or other persuasive evidence of an arrangement with the customer that include fixed or determinable prices provided that collectibility is reasonably assured. Revenue is recognized for services when they are rendered. Revenue is recognized for products upon delivery, when the customer assumes the risks and rewards of ownership.

Revenue from seismic contract services performed on a dayrate basis is recognized as the service is performed. Revenue from other services, including pre-funded multiclient surveys, is recognized as the seismic data is acquired and/or processed on a proportionate basis as work is performed. This method requires revenue to be recognized based upon quantifiable measures of progress, such as square kilometers acquired. Multiclient data surveys are licensed or sold to customers on a non-transferable basis. Revenue from sales of completed multiclient data surveys is recognized upon obtaining a signed licensing agreement and providing customers with access to such data.

Revenue is occasionally generated from contractual arrangements that include multiple deliverables. Revenue from these arrangements is recognized as each item is delivered based on their relative fair value and when the delivered items have stand-alone value to the customer.

Revenue derived from the sale of licenses of Schlumberger software may include installation, maintenance, consulting and training services. If services are not essential to the functionality of the software, the revenue for each element of the contract is recognized separately based on its respective vendor specific objective evidence of fair value when all of the following conditions are met: a signed contract is obtained, delivery has occurred, the fee is fixed or determinable and collectibility is probable.

Translation of Non-United States Currencies

The functional currency of Schlumberger is primarily the US dollar. Assets and liabilities recorded in functional currencies other than US dollars are translated at period end exchange rates. The resulting adjustments are charged or credited directly to the Equity section of the Consolidated Balance Sheet. Revenue and expenses are translated at the weighted-average exchange rates for the period. Realized and unrealized transaction gains and losses are included in income in the period in which they occur. Transaction losses of $24 million, $37 million and $25 million, net of hedging activities, were recognized in 2013, 2012 and 2011, respectively.

Short-term and Fixed Income Investments

The Consolidated Balance Sheet reflects the Schlumberger investment portfolio separated between current and long term, based on maturity. Both Short-term investments and Fixed Income Investments, held to maturity are comprised primarily of money market funds, eurodollar time deposits, certificates of deposit, commercial paper, euro notes and Eurobonds, and are substantially denominated in US dollars. Under normal circumstances it is the intent of Schlumberger to hold the investments until maturity, with the exception of investments that are considered trading ($194 million at both December 31, 2013 and 2012). Short-term investments that are designated as trading are stated at fair value, which is estimated using quoted market prices for those or similar investments. All other investments are stated at cost plus accrued interest, which approximates market. The unrealized gains/losses on investments designated as trading were not significant at both December 31, 2013 and 2012.

For purposes of the Consolidated Statement of Cash Flows, Schlumberger does not consider Short-term investments to be cash equivalents.

Fixed Income Investments, held to maturity at December 31, 2013 of $363 million mature as follows: $51 million in 2015, $23 million in 2016, $51 million in 2017 and $238 million in 2018.

Inventories

Inventories are stated at average cost or at market, whichever is lower. Costs included in Inventories consist of materials, direct labor and manufacturing overhead.

Investments in Affiliated Companies

Investments in companies in which Schlumberger does not have a controlling financial interest, but over which it has significant influence are accounted for using the equity method. Schlumberger’s share of the after-tax earnings of equity method investees is included in Interest and other income. Investments in privately held companies in which Schlumberger does not have the ability to exercise significant influence are accounted for using the cost method. Investments in publicly traded companies in which Schlumberger does not have significant influence are accounted for as available-for-sale marketable securities. These marketable securities are reported at fair value, based on quoted market prices, with unrealized gains and losses reported as a component of Accumulated other comprehensive loss. The fair value of these marketable securities was $257 million and $222 million at December 31, 2013 and 2012, respectively. The cost basis of these marketable securities was $81 million at both December 31, 2013 and 2012.

Equity and cost method investments as well as investments in publicly traded companies are classified as Investments in Affiliated Companies in the Consolidated Balance Sheet.

Fixed Assets and Depreciation

Fixed assets are stated at cost less accumulated depreciation, which is provided for by charges to income over the estimated useful lives of the assets using the straight-line method. Fixed assets include the manufacturing cost of oilfield technical equipment manufactured or assembled by subsidiaries of Schlumberger. Expenditures for replacements and improvements are capitalized. Maintenance and repairs are charged to operating expenses as incurred. Upon sale or other disposition, the applicable amounts of asset cost and accumulated depreciation are removed from the balance sheet and the net amount, less proceeds from disposal, is charged or credited to income.

Multiclient Seismic Data

The multiclient library consists of completed and in-process seismic surveys that are licensed on a nonexclusive basis. Schlumberger capitalizes costs directly incurred in acquiring and processing the multiclient seismic data. Such costs are charged to Cost of revenue based on the percentage of the total costs to the estimated total revenue that Schlumberger expects to receive from the sales of such data. However, under no circumstance will an individual survey carry a net book value greater than a 4-year, straight-line amortized value.

The carrying value of the multiclient library is reviewed for impairment annually as well as when an event or change in circumstance indicating impairment may have occurred. Adjustments to the carrying value are recorded when it is determined that estimated future cash flows, which involves significant judgment on the part of Schlumberger, would not be sufficient to recover the carrying value of the surveys. Significant adverse changes in Schlumberger’s estimated future cash flows could result in impairment charges in a future period.

Goodwill, Other Intangibles and Long-lived Assets

Schlumberger records the excess of purchase price over the fair value of the tangible and identifiable intangible assets acquired as goodwill. The goodwill relating to each of Schlumberger’s reporting units is tested for impairment annually as well as when an event, or change in circumstances, indicates an impairment may have occurred.

Under generally accepted accounting principles, Schlumberger has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of one of its reporting units is greater than its carrying amount. If, after assessing the totality of events or circumstances, Schlumberger determines it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, then there is no need to perform any further testing. However, if Schlumberger concludes otherwise, then it is required to perform the first step of a two-step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit. If the fair value of the reporting unit is less than its carrying value, an impairment loss is recorded to the extent that the implied fair value of the goodwill of the reporting unit is less than its carrying value.

Schlumberger has the option to bypass the qualitative assessment for any reporting unit in any period and proceed directly to performing the first step of the two-step goodwill impairment test.

For purposes of performing the impairment test for goodwill, Schlumberger’s reporting units are its three Groups: Reservoir Characterization, Drilling and Production. Schlumberger elected to perform the qualitative assessment described above for purposes of its annual goodwill impairment test. Based on this assessment, Schlumberger concluded that it was more likely than not that the fair value of each of its reporting units was greater than its carrying amount. Accordingly, no further testing was required.

Long-lived assets, including fixed assets and intangible assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. In reviewing for impairment, the carrying value of such assets is compared to the estimated undiscounted future cash flows expected from the use of the assets and their eventual disposition. If such cash flows are not sufficient to support the asset’s recorded value, an impairment charge is recognized to reduce the carrying value of the long-lived asset to its estimated fair value. The determination of future cash flows as well as the estimated fair value of long-lived assets involve significant estimates on the part of management. If there is a material change in economic conditions or other circumstances influencing the estimate of future cash flows or fair value, Schlumberger could be required to recognize impairment charges in the future.

Intangible assets consist primarily of customer relationships, technology/technical know-how and tradenames acquired in business combinations. Customer relationships are generally amortized over periods ranging from 15 to 28 years, acquired technology/technical know-how are generally amortized over periods ranging from 10 to 18 years and tradenames are generally amortized over periods ranging from 15 to 30 years.

Taxes on Income

Schlumberger computes taxes on income in accordance with the tax rules and regulations of the many taxing authorities where the income is earned. The income tax rates imposed by these taxing authorities vary substantially. Taxable income may differ from pretax income for financial accounting purposes. To the extent that differences are due to revenue or expense items reported in one period for tax purposes and in another period for financial accounting purposes, an appropriate provision for deferred income taxes is made. Any effect of changes in income tax rates or tax laws are included in the provision for income taxes in the period of enactment. When it is more likely than not that a portion or all of the deferred tax asset will not be realized in the future, Schlumberger provides a corresponding valuation allowance against deferred tax assets.

Schlumberger’s tax filings are subject to regular audit by the tax authorities in most of the jurisdictions in which it conducts business. These audits may result in assessments for additional taxes which are resolved with the authorities or, potentially, through the courts. Schlumberger recognizes the impact of a tax position in its financial statements if that position is more likely than not of being sustained on audit, based on the technical merits of the position. Tax liabilities are recorded based on estimates of additional taxes which will be due upon the conclusion of these audits. Estimates of these tax liabilities are made based upon prior experience and are updated in light of changes in facts and circumstances. However, due to the uncertain and complex application of tax regulations, it is possible that the ultimate resolution of audits may result in liabilities which could be materially different from these estimates. In such an event, Schlumberger will record additional tax expense or tax benefit in the year in which such resolution occurs.

Schlumberger generally does not provide income taxes relating to undistributed earnings, as the earnings either would not be taxable when remitted or are considered to be indefinitely reinvested.

Concentration of Credit Risk

Schlumberger’s assets that are exposed to concentrations of credit risk consist primarily of cash, short-term investments, fixed income investments held to maturity, receivables from clients and derivative financial instruments. Schlumberger places its cash, short-term investments and fixed income investments held to maturity with financial institutions and corporations, and limits the amount of credit exposure with any one of them. Schlumberger regularly evaluates the creditworthiness of the issuers in which it invests. The receivables from clients are spread over many countries and customers. Schlumberger maintains an allowance for uncollectible accounts receivable based on expected collectibility and performs ongoing credit evaluations of its customers’ financial condition. By using derivative financial instruments to hedge exposure to changes in exchange rates and commodity prices, Schlumberger exposes itself to some credit risk. Schlumberger minimizes this credit risk by entering into transactions with high-quality counterparties, limiting the exposure to each counterparty and monitoring the financial condition of its counterparties.

Research & Engineering

All research and engineering expenditures are expensed as incurred.

Earnings per Share

Basic earnings per share of Schlumberger from continuing operations is calculated by dividing income from continuing operations attributable to Schlumberger by the weighted average number of common shares outstanding during the year. Diluted earnings per share is calculated by dividing income from continuing operations attributable to Schlumberger by the sum of (i) unvested restricted stock units and (ii) the weighted average number of common shares outstanding assuming dilution. The weighted average number of common shares outstanding assuming dilution assumes that all stock options which are in the money are exercised at the beginning of the period and that the proceeds are used by Schlumberger to purchase shares of its common stock at the average market price for the period.

The following is a reconciliation from basic to diluted earnings per share from continuing operations of Schlumberger for each of the last three years:

(Stated in million except per share amounts)

Schlumberger

Weighted

Earnings

Income from

Average

Per Share

Continuing

from

Operations

Outstanding

Continuing

Operations

2013:00:00

Basic

6,801

1,323

5.14

Assumed exercise of stock options

—

Unvested restricted stock

—

Diluted

6,801

1,333

5.1

2012:00:00

Basic

5,230

1,330

3.93

Assumed exercise of stock options

—

Unvested restricted stock

—

Diluted

5,230

1,339

3.91

2011:00:00

Basic

4,516

1,349

3.35

Assumed exercise of stock options

—

Unvested restricted stock

—

Diluted

4,516

1,361

3.32

Employee stock options to purchase 12 million, 21 million and 14 million shares of common stock at December 31, 2013, 2012 and 2011, respectively, were outstanding but not included in the computation of diluted earnings per share because the option exercise price was greater than the average market price of the common stock, and therefore, the effect on diluted earnings per share would have been anti-dilutive.

Charges_and_Credits

Charges and Credits	12 Months Ended
Charges and Credits	Dec. 31, 2013
Charges and Credits	'
	3. Charges and Credits
	Schlumberger recorded the following charges and credits in continuing operations during 2013, 2012 and 2011:
	2013
	·	During the fourth quarter, Schlumberger recorded a $152 million pretax ($122 million after-tax) provision relating to accounts receivable from a client in Brazil who filed for bankruptcy.
	—	During the second quarter, 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.
	—	During the second quarter, 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.
	—	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 these charges and credits:

		(Stated in millions)

		Pretax			Tax		Net			Consolidated Statement
		Pretax			Tax		Net			of Income 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
	Provision for accounts receivable		152			30		122		Cost of revenue
	Currency devaluation loss in Venezuela		92			—		92		Impairment & other
		$	(420	)	$	49	$	(469	)
	2012
	—	Schlumberger recorded pretax merger and integration-related charges throughout 2012 of $128 million ($112 million after-tax) in connection with its 2010 acquisitions of Smith International, Inc. (“Smith”) and Geoservices.
	—	During the fourth quarter, Schlumberger recorded a pretax charge of $33 million ($27 million after-tax) relating to severance in connection with an initiative to rationalize global overhead costs.
	The following is a summary of these charges:

		(Stated in millions)

		Pretax			Tax		Net			Consolidated Statement
		Pretax			Tax		Net			of Income Classification
	Merger-related integration costs	$	128		$	16	$	112		Merger & integration
	Workforce reduction		33			6		27		Impairment & other
		$	161		$	22	$	139
	2011
	—	Schlumberger recorded pretax merger and integration-related charges throughout 2011 of $113 million ($95 million after-tax) in connection with its 2010 acquisitions of Smith and Geoservices.
	—	During the fourth quarter, Schlumberger recorded a pretax and after-tax charge of $60 million relating to certain assets in Libya that were no longer recoverable as a result of the political unrest there.
	—	During the second quarter, Schlumberger made a $50 million grant to the Schlumberger Foundation to support the Foundation’s Faculty for the Future program, which supports talented women scientists from the developing world by helping them pursue advanced graduate studies in scientific disciplines at leading universities worldwide. As a result, Schlumberger recorded a $50 million charge ($40 million after-tax).
	The following is a summary of these charges:

		(Stated in millions)

		Pretax			Tax		Net			Consolidated Statement
		Pretax			Tax		Net			of Income Classification
	Merger-related integration costs	$	113		$	18	$	95		Merger & integration
	Donation to the Schlumberger Foundation		50			10		40		General & administrative
	Write-off of assets in Libya		60			—		60		Cost of revenue
		$	223		$	28	$	195

Acquisitions

Acquisitions	12 Months Ended
Acquisitions	Dec. 31, 2013
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
	Schlumberger has made other acquisitions and investments, none of which were significant individually or in the aggregate, for cash payments, net of cash acquired, of $610 million during 2013, $845 million during 2012, and $610 million during 2011.

Inventories

Inventories	12 Months Ended
Inventories	Dec. 31, 2013
Inventories	'
	5. Inventories
	A summary of inventories follows:

		(Stated in millions)

		2013		2012
	Raw materials & field materials	$	2,539	$	2,519
	Work in process		261		349
	Finished goods		1,803		1,917
		$	4,603	$	4,785

Fixed_Assets

Fixed Assets	12 Months Ended
Fixed Assets	Dec. 31, 2013
Fixed Assets	'
	6. Fixed Assets
	A summary of fixed assets follows:

		(Stated in millions)

		2013		2012
	Land	$	394	$	366
	Buildings & improvements		3,534		3,209
	Machinery & equipment		29,332		27,690
	Seismic vessels		1,904		1,903
			35,164		33,168
	Less accumulated depreciation		20,068		18,388
		$	15,096	$	14,780
	The estimated useful lives of Buildings & improvements are primarily 25 to 30 years. The estimated useful lives of Machinery & equipment are primarily 5 to 10 years. Seismic vessels are depreciated over periods ranging from 20 to 30 years.
	Depreciation expense relating to fixed assets was $3.1 billion, $2.9 billion and $2.7 billion in 2013, 2012 and 2011, respectively.

Multiclient_Seismic_Data

Multiclient Seismic Data	12 Months Ended
Multiclient Seismic Data	Dec. 31, 2013
Multiclient Seismic Data	'
	7. Multiclient Seismic Data
	The change in the carrying amount of multiclient seismic data is as follows:

		(Stated in millions)

		2013			2012
	Balance at beginning of year	$	518		$	425
	Capitalized in year		394			351
	Charged to expense		(245	)		(258	)
		$	667		$	518

Goodwill

Goodwill	12 Months Ended
Goodwill	Dec. 31, 2013
Goodwill	'
	8. Goodwill
	The changes in the carrying amount of goodwill by reporting unit were as follows:

		(Stated in millions)

		Reservoir			Drilling			Production			Distribution			Total
		Characterization			Drilling			Production			Distribution			Total
	Balance at January 1, 2012	$	3,360		$	8,362		$	2,356		$	76		$	14,154
	Acquisitions		391			93			—			—			484
	Reallocation		—			(125	)		125			—			—
	Divestiture of business		—			—			—			(76	)		(76	)
	Other		9			7			7			—			23
	Balance, December 31, 2012		3,760			8,337			2,488			—			14,585
	Acquisitions		4			3			336			—			343
	Divestiture of business		—			—			(150	)		—			(150	)
	Other		(27	)		(25	)		(20	)		—			(72	)
	Balance, December 31, 2013	$	3,737		$	8,315		$	2,654		$	—		$	14,706

Intangible_Assets

Intangible Assets	12 Months Ended
Intangible Assets	Dec. 31, 2013
Intangible Assets	'
	9. Intangible Assets
	A summary of intangible assets follows:

		(Stated in millions)

		2013						2012
		Gross		Accumulated		Net Book		Gross		Accumulated		Net Book
		Book Value		Amortization		Value		Book Value		Amortization		Value
	Technology/Technical Know-How	$	1,960	$	597	$	1,363	$	1,967	$	474	$	1,493
	Tradenames		1,647		257		1,390		1,647		188		1,459
	Customer Relationships		2,263		407		1,856		2,115		312		1,803
	Other		435		335		100		369		322		47
		$	6,305	$	1,596	$	4,709	$	6,098	$	1,296	$	4,802
	Amortization expense was $330 million in 2013, $331 million in 2012 and $324 million in 2011.
	The weighted average amortization period for all intangible assets is 20 years.
	Amortization expense for the subsequent five years is estimated to be as follows: 2014: $357 million, 2015: $350 million, 2016: $334 million, 2017: $314 million and 2018: $307 million.

Longterm_Debt_and_Debt_Facilit

Long-term Debt and Debt Facility Agreements	12 Months Ended
Long-term Debt and Debt Facility Agreements	Dec. 31, 2013
Long-term Debt and Debt Facility Agreements	'
	10. Long-term Debt and Debt Facility Agreements
	Long-term Debt consists of the following:

		(Stated in millions)

		2013		2012
	3.30% Senior Notes due 2021	$	1,596	$	1,595
	3.65% Senior Notes due 2023		1,495		—
	4.50% Guaranteed Notes due 2014 (1)		—		1,324
	2.75% Guaranteed Notes due 2015 (1)		1,373		1,318
	1.95% Senior Notes due 2016		1,099		1,099
	4.20% Senior Notes due 2021		1,099		1,099
	1.25% Senior Notes due 2017		999		999
	2.40% Senior Notes due 2022		999		998
	1.50% Guaranteed Notes due 2019(1)		697		—
	2.65% Senior Notes due 2016 (2)		500		500
	Floating Rate Senior Notes due 2014 (3)		—		300
	Other		536		277
		$	10,393	$	9,509
	(1)	Schlumberger maintains a €5.0 billion Guaranteed Euro Medium Term Note program that provides for the issuance of various types of debt instruments such as fixed or floating rate notes in euro, US dollar or other currencies. The following is a summary of debt issued under this program:
	·	Schlumberger issued €0.5 billion 1.50% Guaranteed Notes due 2019 in the fourth quarter of 2013. Schlumberger entered into agreements to swap these euro notes for US dollars on the date of issue until maturity, effectively making this a US dollar denominated debt on which Schlumberger will pay interest in US dollars at a rate equal to three-month LIBOR plus approximately 64 basis points.
	·	Schlumberger issued €1.0 billion 2.75% Guaranteed Notes due 2015 in the fourth quarter of 2010. Schlumberger entered into agreements to swap these euro notes for US dollars on the date of issue until maturity, effectively making this a US dollar denominated debt on which Schlumberger will pay interest in US dollars at a rate of 2.56%.
	·	Schlumberger issued €1.0 billion 4.50% Guaranteed Notes due 2014 in the first quarter of 2009, Schlumberger entered into agreements to swap these euro notes for US dollars on the date of issue until maturity, effectively making this a US dollar denominated debt on which Schlumberger will pay interest in US dollars at a rate of 4.95%.
	(2)	Schlumberger entered into agreements to swap these dollar notes for euros on the date of issue until maturity, effectively making this a euro-denominated debt on which Schlumberger pays interest in euros at a rate of 2.39%.
	(3)	These notes bear interest at a rate equal to three-month LIBOR plus 55 basis points per year.
	Schlumberger Limited fully and unconditionally guarantees the securities issued by certain of its subsidiaries, including securities issued by Schlumberger Investment SA, a wholly-owned finance subsidiary of Schlumberger.
	At December 31, 2013, Schlumberger had separate committed debt facility agreements aggregating $4.0 billion with commercial banks, of which $3.7 billion was available and unused. This included $3.5 billion of committed facilities which supports a commercial paper program in Europe, of which $250 million mature in July 2016, $1.75 billion mature in July 2018 and $1.5 billion mature in November 2018. Interest rates and other terms of borrowing under these lines of credit vary from country to country.
	Commercial paper borrowings are classified as long-term debt to the extent of their backup by available and unused committed credit facilities maturing in more than one year and to the extent it is Schlumberger’s intent to maintain these obligations for longer than one year. Borrowings under the commercial paper program at December 31, 2013 were $95 million and were classified within Long-term debt – current portion in the Consolidated Balance Sheet. There were no borrowings under the commercial paper programs at December 31, 2012.
	The weighted average interest rate on variable rate debt as of December 31, 2013 was 2.8%.
	Long-term Debt as of December 31, 2013, is due as follows: $1.4 billion in 2015, $1.6 billion in 2016, $1.0 billion in 2017, $0.5 billion in 2018, $0.7 billion in 2019, $2.7 billion in 2021, $1.0 billion in 2022 and $1.5 billion in 2023.
	The fair value of Schlumberger’s Long-term Debt at December 31, 2013 and December 31, 2012 was $10.4 billion and $9.9 billion, respectively, and was estimated based on quoted market prices.

Derivative_Instruments_and_Hed

Derivative Instruments and Hedging Activities	12 Months Ended
Derivative Instruments and Hedging Activities	Dec. 31, 2013
Derivative Instruments and Hedging Activities	'
	11. Derivative Instruments and Hedging Activities
	Schlumberger is exposed to market risks primarily related to fluctuations in foreign currency exchange rates and interest rates. To mitigate these risks, Schlumberger utilizes derivative instruments. Schlumberger does not enter into derivatives for speculative purposes.
	Foreign Currency Exchange Rate Risk
	As a multinational company, Schlumberger conducts its business in approximately 85 countries. Schlumberger’s functional currency is primarily the US dollar, which is consistent with the oil and gas industry. Approximately 78% of Schlumberger’s revenues in 2013 was denominated in US dollars. 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. 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 December 31, 2013, Schlumberger recognized a cumulative net $29 million gain in Accumulated other comprehensive loss relating to revaluation of foreign currency forward contracts and foreign currency options designated as cash flow hedges, the majority of which is expected to be reclassified into earnings within the next twelve 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 for certain currencies. The fair value of these contracts is recorded on the Consolidated Balance Sheet and the changes in the fair value are recognized in the Consolidated Statement of Income along with the change in fair value of the hedged item.
	At December 31, 2013, contracts were outstanding for the US dollar equivalent of $7.6 billion in various foreign currencies, of which $3.8 billion relate 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, from time to time, 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 December 31, 2013, Schlumberger had fixed rate debt aggregating $10.5 billion and variable rate debt aggregating $2.7 billion, after taking into account the effect of the swap.


	The fair values of outstanding derivative instruments are summarized as follows:

		(Stated in millions)

		Fair Value of Derivatives							Consolidated Balance Sheet Classification
	Derivative assets
	Derivative assets	2013				2012
	Derivative designated as hedges:
	Foreign exchange contracts	$	98			$	26		Other current assets
	Foreign exchange contracts		24				22		Other Assets
	Interest rate swaps		27				—		Other Assets
	Interest rate swaps		—				2		Other current assets
			149				50
	Derivative not designated as hedges:
	Foreign exchange contracts		10				10		Other current assets
	Foreign exchange contracts		4				6		Other Assets
			14				16
		$	163			$	66
	Derivative Liabilities
	Derivative designated as hedges:
	Foreign exchange contracts	$	14			$	80		Accounts payable and accrued liabilities
	Foreign exchange contracts		1				19		Other Liabilities
			15				99
	Derivative not designated as hedges:
	Foreign exchange contracts		2				3		Accounts payable and accrued liabilities

		$	17			$	102
	The fair value of all outstanding derivatives is determined using a model with inputs that are observable in the market or can be derived from or corroborated by observable data.
	The effect of derivative instruments designated as fair value hedges and not designated as hedges on the Consolidated Statement of Income was as follows:

		(Stated in millions)

		Gain (Loss) Recognized in Income											Consolidated Statement of
		2013				2012			2011				Income Classification
	Derivatives designated as fair value hedges:
	Interest rate swaps	$	15			$	1		$	9			Interest expense

	Derivatives not designated as hedges:
	Foreign exchange contracts	$	(2	)		$	5		$	(17	)		Cost of revenue
	Commodity contracts		—				1			(5	)		Cost of revenue
		$	(2	)		$	6		$	(22	)



	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											Consolidated Statement of
	AOCL into Income											Consolidated Statement of
	2013				2012			2011				Income Classification
Foreign exchange contracts	$	58			$	49		$	(25	)		Cost of revenue
Foreign exchange contracts		(8	)			(13	)		17			Research & engineering
	$	50			$	36		$	(8	)

	(Stated in millions)

	Gain (Loss) Recognized in AOCL
	2013				2012			2011
Foreign exchange contracts	$	49			$	92		$	(79	)

Stockholders_Equity

Stockholders' Equity	12 Months Ended
Stockholders' Equity	Dec. 31, 2013
Stockholders' Equity	'
	12. Stockholders’ Equity
	Schlumberger is authorized to issue 4,500,000,000 shares of common stock, par value $0.01 per share, of which 1,307,330,369 and 1,328,255,773 shares were outstanding on December 31, 2013 and 2012, respectively. Holders of common stock are entitled to one vote for each share of stock held. Schlumberger is also authorized to issue 200,000,000 shares of preferred stock, par value $0.01 per share, which may be issued in series with terms and conditions determined by the Board of Directors. No shares of preferred stock have been issued.
	Accumulated Other Comprehensive Loss consists of the following:
		(Stated in millions)

		Currency			Fair Value			Pension and			Unrealized		Total
		Translation			of			Other			Gains on Marketable
		Adjustments			Derivatives			Postretirement			Securities
								Benefit Plans
	Balance, January 1, 2011	$	(911	)	$	45		$	(1,902	)	$	—	$	(2,768	)
	Other comprehensive income (loss) before reclassifications		(82	)		(79	)		(1,007	)		—		(1,168	)
	Amounts reclassified from accumulated other comprehensive loss		—			8			254			—		262
	Income taxes		—			—			117			—		117
	Balance, December 31, 2011		(993	)		(26	)		(2,538	)		—		(3,557	)
	Other comprehensive income (loss) before reclassifications		76			92			(1,016	)		141		(707	)
	Amounts reclassified from accumulated other comprehensive loss		—			(36	)		312			—		276
	Income taxes		—			—			100			—		100
	Balance, December 31, 2012		(917	)		30			(3,142	)		141		(3,888	)
	Other comprehensive income (loss) before reclassifications		(151	)		49			1,328			35		1,261
	Amounts reclassified from accumulated other comprehensive loss		—			(50	)		425			—		375
	Income taxes		—			—			(302	)		—		(302	)
	Balance, December 31, 2013	$	(1,068	)	$	29		$	(1,691	)	$	176	$	(2,554	)


	Other comprehensive income was $1.334 billion in 2013. Other comprehensive loss was $331 million and $789 million in 2012 and 2011, respectively.

Stockbased_Compensation_Plans

Stock-based Compensation Plans	12 Months Ended
Stock-based Compensation Plans	Dec. 31, 2013
Stock-based Compensation Plans	'
	13. Stock-based Compensation Plans
	Schlumberger has three types of stock-based compensation programs: (i) stock options, (ii) a restricted stock, restricted stock unit and performance share unit program (collectively referred to as “restricted stock”) and (iii) a discounted stock purchase plan (“DSPP”).
	Stock Options
	Key employees are granted stock options under Schlumberger stock option plans. For all of the stock options granted, the exercise price equals the average of the high and low sales prices of Schlumberger stock on the date of grant; an option’s maximum term is ten years, and options generally vest in increments over five years.
	The fair value of each stock option grant was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions and resulting weighted-average fair value per share:

		2013				2012				2011
	Dividend yield		1.7	%			1.5	%			1.2	%
	Expected volatility		38	%			39	%			37	%
	Risk free interest rate		1.2	%			1.5	%			2.8	%
	Expected option life in years		7				6.9				6.9
	Weighted-average fair value per share	$	23.93			$	25.26			$	31.38
	The following table summarizes information concerning options outstanding and options exercisable as of December 31, 2013:

			(Shares stated in thousands)

			Options Outstanding												Options Exercisable
	Exercise prices range		Options				Weighted-				Weighted-				Options			Weighted-
			Outstanding				average				average				Exercisable			average
							remaining				exercise							exercise
							contractual life				price							price
							(in years)
	$23.75 - $56.61			7,244				3.8			$	45.23				6,257		$	45.84
	$58.45 - $68.83			8,458				5.5			$	65.82				5,125		$	64.7
	$70.31 - $78.35			13,765				8.6			$	71.94				1,289		$	72.25
	$83.88 - $84.93			10,005				6.1			$	84.21				5,762		$	84.45
	$89.99 - $110.77			2,467				5.8			$	94.31				1,658		$	96.29
				41,939				6.4			$	70.33				20,091		$	67.58
	The weighted average remaining contractual life of stock options exercisable as of December 31, 2013 was 4.8 years.
	The following table summarizes stock option activity during the years ended December 31, 2013, 2012 and 2011:

		(Shares stated in thousands)

		2013								2012							2011
		Shares				Weighted-				Shares				Weighted-			Shares				Weighted-
						average								average							average
						exercise								exercise							exercise
						price								price							price
	Outstanding at beginning of year		42,059			$	67.77				40,027			$	63.84			37,499			$	55.33
	Granted		6,570			$	72.16				8,664			$	72.04			9,528			$	84.29
	Exercised		(5,168	)		$	51.73				(4,171	)		$	39.07			(5,470	)		$	42.36
	Forfeited		(1,522	)		$	70.57				(2,461	)		$	67.5			(1,530	)		$	58.82
	Outstanding at year-end		41,939			$	70.33				42,059			$	67.77			40,027			$	63.84
	The aggregate intrinsic value of stock options outstanding as of December 31, 2013 was $840 million.
	The aggregate intrinsic value of stock options exercisable as of December 31, 2013 was $463 million.
	The total intrinsic value of options exercised during the years ended December 31, 2013, 2012 and 2011, was $176 million, $142 million and $246 million, respectively.
	Restricted Stock

	During 2013, Schlumberger began granting performance share units to certain executives. The number of shares earned is determined at the end of each performance period, which is generally three years, based on Schlumberger’s achievement of a predefined return on capital employed (“ROCE”), as defined in the underlying performance share unit agreement. In the event the ROCE exceeds the predefined target, shares for up to the maximum of 250% of the target award may be granted. In the event the ROCE falls below the predefined target, a reduced number of shares may be granted. If the ROCE falls below the threshold award performance level, no shares will be granted. As of December 31, 2013, performance share units of 0.5 million were outstanding based on the achievement of 100% of target.

	All other restricted stock awards generally vest at the end of three years.

	Restricted stock awards do not pay dividends or allow voting rights during the performance period. Accordingly, the fair value of the restricted stock award is the quoted market price of Schlumberger’s stock on the date of grant less the present value of the expected dividends not received during the vesting period.
	The following table summarizes information about all restricted stock transactions:

		(Shares stated in thousands)

		2013								2012							2011
		Restricted				Weighted				Restricted				Weighted			Restricted				Weighted
		Stock				Average				Stock				Average			Stock				Average
						Grant Date								Grant Date							Grant Date
						Fair Value								Fair Value							Fair Value
	Unvested at beginning of year		3,566			$	73.62				2,433			$	72.25			2,223			$	64.27
Granted		1,949				75.65				1,668				71.09			1,136				84.61
Vested		(958	)			66.98				(351	)			52.26			(767	)			67.36
Forfeited		(386	)			74.53				(184	)			73.38			(159	)			72.51
Unvested at end of year		4,171			$	76.01				3,566			$	73.62			2,433			$	72.25
Discounted Stock Purchase Plan
Under the terms of the DSPP, employees can choose to have a portion of their earnings withheld, subject to certain restrictions, to purchase Schlumberger common stock. The purchase price of the stock is 92.5% of the lower of the stock price at the beginning or end of the plan period at six-month intervals.
The fair value of the employees’ purchase rights under the DSPP was estimated using the Black-Scholes model with the following assumptions and resulting weighted average fair value per share:

	2013				2012				2011
Dividend yield		1.7	%			1.6	%			1.2	%
Expected volatility		24	%			41	%			28	%
Risk free interest rate		0.1	%			0.2	%			0.2	%
Weighted average fair value per share	$	9.91			$	12.71			$	12.83
Total Stock-based Compensation Expense
The following summarizes stock-based compensation expense recognized in income:

	(Stated in millions)

	2013				2012				2011
Stock options	$	165			$	203			$	176
Restricted stock		110				82				60
DSPP		40				50				36
	$	315			$	335			$	272

At December 31, 2013, there was $502 million of total unrecognized compensation cost related to nonvested stock-based compensation arrangements of which $232 million is expected to be recognized in 2014, $161 million in 2015, $75 million in 2016, $28 million in 2017 and $6 million in 2018.

As of December 31, 2013, approximately 40 million shares were available for future grants under Schlumberger’s stock-based compensation programs.

Income_Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2013
Income Taxes	'
	14. Income Taxes
	Schlumberger operates in more than 100 tax jurisdictions, where statutory tax rates generally vary from 0% to 40%.
	Income from continuing operations before taxes which were subject to United States and non-United States income taxes for each of the three years ended December 31, were as follows:

		(Stated in millions)

		2013			2012			2011
	United States	$	1,904		$	1,980		$	2,246
	Outside United States		6,787			4,979			3,772
		$	8,691		$	6,959		$	6,018
	Schlumberger recorded net pretax credits of $420 million in 2013 ($53 million of charges in the US and $473 million of net credits outside of the US). Schlumberger recorded $161 million of pretax charges in 2012 ($52 million in the US and $109 million outside the US) and $223 million of pretax charges in 2011 ($104 million in the US and $119 million outside the US). These charges and credits are included in the table above and are more fully described in Note 3 – Charges and Credits.
	The components of net deferred tax assets (liabilities) were as follows:

		(Stated in millions)

		2013			2012
	Postretirement benefits	$	236		$	543
	Intangible assets		(1,502	)		(1,490	)
	Investments in non-US subsidiaries		(282	)		(317	)
	Other, net		128			114
		$	(1,420	)	$	(1,150	)
	The above deferred tax balances at December 31, 2013 and 2012 were net of valuation allowances relating to net operating losses in certain countries of $238 million and $256 million, respectively.
	The components of Taxes on income were as follows:

		(Stated in millions)

		2013			2012			2011
	Current:
	United States - Federal	$	682		$	698		$	809
	United States - State		60			53			42
	Outside United States		1,211			1,025			667
		$	1,953		$	1,776		$	1,518
	Deferred:
	United States - Federal	$	(109	)	$	(105	)	$	(73	)
	United States - State		(4	)		(7	)		(7	)
	Outside United States		34			22			75
	Valuation allowance		(26	)		14			(21	)
		$	(105	)	$	(76	)	$	(26	)
		$	1,848		$	1,700		$	1,492
	A reconciliation of the United States statutory federal tax rate (35%) to the consolidated effective tax rate is:

		2013			2012			2011
	US statutory federal rate		35	%		35	%		35	%
	Non-US income taxed at different rates		(12	)		(10	)		(9	)
	Charges and credits (See Note 3)		(2	)		—			—
	Other		—			(1	)		(1	)
			21	%		24	%		25	%
	Schlumberger conducts business in more than 100 tax jurisdictions, a number of which have tax laws that are not fully defined and are evolving. Schlumberger’s tax filings are subject to regular audit by the tax authorities. Tax liabilities are recorded based on estimates of additional taxes which will be due upon the conclusion of these audits.
	A reconciliation of the beginning and ending amount of liabilities associated with uncertain tax positions for the years ended December 31, 2013, 2012 and 2011 is as follows:

		(Stated in millions)

		2013			2012			2011
	Balance at beginning of year	$	1,453		$	1,353		$	1,338
	Additions based on tax positions related to the current year		146			156			153
	Additions for tax positions of prior years		109			98			49
	Additions related to acquisitions		—			—			48
	Impact of changes in exchange rates		(47	)		12			(18	)
	Settlements with tax authorities		(64	)		(17	)		(77	)
	Reductions for tax positions of prior years		(109	)		(103	)		(102	)
	Reductions due to the lapse of the applicable statute of limitations		(36	)		(46	)		(38	)
	Balance at end of year	$	1,452		$	1,453		$	1,353
	The amounts above exclude accrued interest and penalties of $253 million, $250 million and $225 million at December 31, 2013, 2012 and 2011 respectively.
Schlumberger classifies interest and penalties relating to uncertain tax positions within Taxes on income in the Consolidated Statement of Income. During 2013, 2012 and 2011, Schlumberger recognized $30 million, $21 million and $15 million in interest and penalties, respectively.
The following table summarizes the tax years that are either currently under audit or remain open and subject to examination by the tax authorities in the most significant jurisdictions in which Schlumberger operates:

Brazil	2008 - 2013
Canada	2006 - 2013
Mexico	2007 - 2013
Norway	2013
Russia	2010 - 2013
Saudi Arabia	2001 - 2013
United Kingdom	2009 - 2013
United States	2008 - 2013
In certain of the jurisdictions noted above, Schlumberger operates through more than one legal entity, each of which has different open years subject to examination. The table above presents the open years subject to examination for the most material of the legal entities in each jurisdiction. Additionally, it is important to note that tax years are technically not closed until the statute of limitations in each jurisdiction expires. In the jurisdictions noted above, the statute of limitations can extend beyond the open years subject to examination.

Leases_and_Lease_Commitments

Leases and Lease Commitments	12 Months Ended
	Dec. 31, 2013
Leases and Lease Commitments	'
	15. Leases and Lease Commitments

	Total rental expense was $1.9 billion in 2013, $1.9 billion in 2012, and $1.6 billion in 2011.

	Future minimum rental commitments under noncancelable operating leases for each of the next five years are as follows:



	(Stated in millions)

	2014	$	318
	2015		246
	2016		195
	2017		165
	2018		136
	Thereafter		558
		$	1,618

Contingencies

Contingencies	12 Months Ended
Contingencies	Dec. 31, 2013
Contingencies	'
	16. Contingencies
	In 2009, Schlumberger learned that 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 is cooperating with the governmental authorities and cannot currently predict the outcome or estimate the possible impact of the ultimate resolution of these matters.
	On April 20, 2010, a fire and explosion occurred onboard the semisubmersible drilling rig Deepwater Horizon, owned by Transocean Ltd. and under contract to a subsidiary of BP plc. Pursuant to a contract between M-I SWACO and BP, M-I SWACO provided certain services under the direction of BP. A number of legal actions, certain of which named an M-I SWACO entity as a defendant, were filed in connection with the Deepwater Horizon incident. Many of these claims were consolidated into multidistrict litigation in federal court (the “MDL”). During the first quarter of 2013, the federal court entered its order dismissing all claims against M-I SWACO that were consolidated as part of the MDL.
	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 is remote. However, litigation is inherently uncertain and it is not possible to predict the ultimate disposition of these proceedings.

Segment_Information

Segment Information	12 Months Ended
Segment Information	Dec. 31, 2013
Segment Information	'
	17. Segment Information
	Schlumberger’s segments are as follows:
	—	Reservoir Characterization Group – Consists of the principal technologies involved in finding and defining hydrocarbon resources. These include WesternGeco, Wireline, Testing Services, Schlumberger Information Services and PetroTechnical Services.
	—	Drilling Group – Consists of the principal technologies involved in the drilling and positioning of oil and gas wells and comprises Bits & Advanced Technologies, M-I SWACO, Geoservices, Drilling & Measurements, Drilling Tools & Remedial Services and Integrated Project Management well construction projects.
	—	Production Group – Consists of the principal technologies involved in the lifetime production of oil and gas reservoirs and includes Well Services, Completions, Artificial Lift, Well Intervention, Water Services, Carbon Services and the Schlumberger Production Management field production projects.
	The Groups are collectively referred to as “Oilfield Services.”
	Financial information for the years ended December 31, 2013, 2012 and 2011, by segment, is as follows:

		(Stated in millions)

		2013
		Revenue				Income				Assets			Depreciation			Capital
						before							and			Expenditures
						taxes							Amortization
	OILFIELD SERVICES
	Reservoir Characterization	$	12,246			$	3,647			$	8,807		$	1,332		$	1,275
	Drilling		17,317				3,309				11,069			1,088			1,291
	Production		15,927				2,619				10,033			821			1,204
	Eliminations & other		(224	)			(231	)			1,954			217			173
			45,266				9,344				31,863			3,458			3,943
	Goodwill and intangible assets										19,415
	All other assets										3,772
	Corporate (1)						(726	)			12,050			208
	Interest income (2)						22
	Interest expense (3)						(369	)
	Charges & credits (4)						420
		$	45,266			$	8,691			$	67,100		$	3,666		$	3,943

		(Stated in millions)

		2012
		Revenue				Income				Assets			Depreciation			Capital
						before							and			Expenditures
						taxes							Amortization
	OILFIELD SERVICES
	Reservoir Characterization	$	11,159			$	3,069			$	8,558		$	1,311		$	1,235
	Drilling		15,892				2,789				10,989			1,086			1,668
	Production		14,802				2,327				9,579			724			1,439
	Eliminations & other		(122	)			(68	)			2,065			181			352
			41,731				8,117				31,191			3,302			4,694
	Goodwill and intangible assets										19,387
	Discontinued operations assets										246
	All other assets										2,702
	Corporate (1)						(696	)			8,021			198
	Interest income (2)						30
	Interest expense (3)						(331	)
	Charges & credits (4)						(161	)
		$	41,731			$	6,959			$	61,547		$	3,500		$	4,694

		(Stated in millions)
		2011
		Revenue				Income				Assets			Depreciation and			Capital
						before							Amortization			Expenditures
						taxes
	OILFIELD SERVICES
	Reservoir Characterization	$	9,740			$	2,347			$	7,480		$	1,285		$	1,055
	Drilling		13,775				2,218				9,055			982			1,419
	Production		13,030				2,554				7,962			643			1,382
	Eliminations & other		34				(35	)			1,958			162			148
			36,579				7,084				26,455			3,072			4,004
	Goodwill and intangible assets										18,932
	Discontinued operations assets										1,280
	All other assets										2,201
Corporate (1)						(590	)			6,333			202
Interest income (2)						37
Interest expense (3)						(290	)
Charges & credits (4)						(223	)
	$	36,579			$	6,018			$	55,201		$	3,274		$	4,004
(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 and other nonoperating items. Corporate assets consist of cash, short-term investments, fixed income investments, held to maturity and investments in affiliates.
(2)	Interest income excludes amounts which are included in the segments’ income (2013: $11 million; 2012: $- million; 2011: $3 million).
(3)	Interest expense excludes amounts which are included in the segments’ income (2013: $23 million; 2012: $8 million; 2011: $8 million).
(4)	See Note 3 – Charges and Credits.
Segment assets consist of receivables, inventories, fixed assets and multiclient seismic data.
Depreciation & Amortization includes multiclient seismic data costs.
Revenue by geographic area for the years ended December 31, 2013, 2012 and 2011 is as follows:

	(Stated in millions)

	2013				2012				2011
North America	$	13,897			$	13,535			$	12,378
Latin America		7,751				7,554				6,467
Europe/CIS/Africa		12,366				11,444				9,676
Middle East & Asia		10,810				8,775				7,722
Eliminations & other		442				423				336
	$	45,266			$	41,731			$	36,579
Revenue is based on the location where services are provided.
During each of the three years ended December 31, 2013, 2012 and 2011, no single customer exceeded 10% of consolidated revenue.
Schlumberger did not have revenue from third-party customers in its country of domicile during the last three years. Revenue in the United States in 2013, 2012 and 2011 was $12.0 billion, $11.8 billion and $10.7 billion, respectively.
Fixed Assets less accumulated depreciation by geographic area are as follows:

	(Stated in millions)

	2013				2012				2011
North America	$	4,858			$	4,868			$	4,230
Latin America		1,889				1,788				1,472
Europe/CIS/Africa		3,452				3,414				3,341
Middle East & Asia		2,991				2,908				2,233
Unallocated (1)		1,906				1,802				1,717
	$	15,096			$	14,780			$	12,993
(1)	Represents seismic vessels, including the related on-board equipment, which frequently transition between geographic areas.

Pension_and_Other_Benefit_Plan

Pension and Other Benefit Plans	12 Months Ended
Pension and Other Benefit Plans	Dec. 31, 2013
Pension and Other Benefit Plans	'
	18. Pension and Other Benefit Plans
	Pension Plans
	Schlumberger sponsors several defined benefit pension plans that cover substantially all US employees hired prior to October 1, 2004. The benefits are based on years of service and compensation, on a career-average pay basis.
	In addition to the United States defined benefit pension plans, Schlumberger sponsors several other international defined benefit pension plans. The most significant of these international plans are the International Staff Pension Plan and the UK pension plan (collectively, the “International plans”). The International Staff Pension Plan covers certain international employees and is based on years of service and compensation on a career-average pay basis. The UK plan covers employees hired prior to April 1, 1999, and is based on years of service and compensation, on a final salary basis.
	The weighted-average assumed discount rate, compensation increases and the expected long-term rate of return on plan assets used to determine the net pension cost for the US and International plans were as follows:

		US												International
		2013				2012				2011				2013				2012				2011
	Discount rate		4.25	%			5	%			5.5	%			4.38	%			4.95	%			5.47	%
	Compensation increases		4	%			4	%			4	%			4.83	%			4.91	%			4.91	%
	Return on plan assets		7.5	%			7.5	%			7.5	%			7.5	%			7.5	%			7.5	%
	Net pension cost for 2013, 2012 and 2011 included the following components:

		(Stated in millions)

		US												International
		2013				2012				2011				2013				2012				2011
	Service cost - benefits earned during the period	$	80			$	68			$	59			$	127			$	86			$	64
	Interest cost on projected benefit obligation		150				152				150				253				241				226
	Expected return on plan assets		(200	)			(185	)			(170	)			(384	)			(328	)			(279	)
	Amortization of net loss		122				95				89				155				76				31
	Amortization of prior service cost		12				12				12				117				120				120
		$	164			$	142			$	140			$	268			$	195			$	162
	The weighted-average assumed discount rate and compensation increases used to determine the projected benefit obligations for the US and International plans were as follows:

		US								International
		2013				2012				2013				2012
	Discount rate		4.85	%			4.25	%			4.76	%			4.38	%
	Compensation increases		4	%			4	%			4.8	%			4.83	%
	The changes in the projected benefit obligation, plan assets and funded status of the plans were as follows:

		(Stated in millions)

		US								International
		2013				2012				2013				2012
	Change in Projected Benefit Obligations
	Projected benefit obligation at beginning of year	$	3,558			$	3,073			$	5,798			$	4,666
	Service cost		80				68				127				86
	Interest cost		150				152				253				241
	Contributions by plan participants		—				—				104				97
	Actuarial (gains) losses		-232				399				(168	)			786
	Currency effect		—				—				30				62
	Benefits paid		(138	)			(134	)			(163	)			(140	)
	Projected benefit obligation at end of year	$	3,418			$	3,558			$	5,981			$	5,798
	Change in Plan Assets
	Plan assets at fair value at beginning of year	$	2,910			$	2,655			$	5,120			$	4,097
	Actual return on plan assets		356				336				836				490
	Currency effect		—				—				35				62
	Company contributions		141				53				314				514
	Contributions by plan participants		—				—				104				97
	Benefits paid		(138	)			(134	)			(163	)			(140	)
	Plan assets at fair value at end of year	$	3,269			$	2,910			$	6,246			$	5,120
	(Unfunded Liability) / Asset	$	(149	)		$	(648	)		$	265			$	(678	)
	Amounts Recognized in Balance Sheet
	Postretirement Benefits	$	(149	)		$	(648	)		$	(5	)		$	(687	)
	Other Assets		—				—				270				9
		$	(149	)		$	(648	)		$	265			$	(678	)
	Amounts Recognized in Accumulated Other Comprehensive Loss
	Actuarial losses	$	687			$	1,197			$	882			$	1,234
	Prior service cost		78				90				418				598
		$	765			$	1,287			$	1,300			$	1,832
	Accumulated benefit obligation	$	3,158			$	3,262			$	5,593			$	5,401
	The unfunded liability represents the difference between the plan assets and the projected benefit obligation (“PBO”). The PBO represents the actuarial present value of benefits based on employee service and compensation and includes an assumption about future compensation levels. The accumulated benefit obligation represents the actuarial present value of benefits based on employee service and compensation, but does not include an assumption about future compensation levels.
The weighted-average allocation of plan assets and the target allocations by asset category are as follows:

	US												International
	Target				2013				2012				Target				2013				2012
Equity securities		45 - 55	%			50	%			47	%			50 - 70	%			60	%			56	%
Debt securities		33 - 45				40				42				25 - 40				31				35
Cash and cash equivalents		0 - 3				2				2				0 - 3				3				3
Alternative investments		0 - 10				8				9				0 - 20				6				6
		100	%			100	%			100	%			100	%			100	%			100	%
Schlumberger’s investment policy includes guidelines and procedures designed to ensure that assets are prudently invested in order to meet the future benefit obligation of the pension plans. The policy does not permit the direct investment of plan assets in any Schlumberger security. Schlumberger’s investment horizon is long-term and, accordingly, the target asset allocations encompass a strategic, long-term perspective of capital markets, expected risk and return behavior, and perceived future economic conditions. The target asset allocations are reviewed periodically. Schlumberger may utilize certain derivative instruments, such as options, futures, swaps and forwards, within the plans to manage risks, as a substitute for physical securities or to obtain exposure to different markets.
Asset performance is monitored frequently with an overall expectation that plan assets will meet or exceed the weighted index of its target asset allocation and component benchmark over rolling five-year periods.
The expected long-term rate of return on assets assumptions reflect the average rate of earnings expected on funds invested or to be invested. The assumptions have been determined based on expectations regarding future rates of return for the portfolio considering the asset allocation and related historical rates of return. The appropriateness of the assumptions is reviewed annually.
The fair value of Schlumberger’s pension plan assets at December 31, 2013 and 2012, by asset category, is presented below and was determined based on valuation techniques categorized as follows:
—	Level One: The use of quoted prices in active markets for identical instruments.
—	Level Two: The use of quoted prices for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active or other inputs that are observable in the market or can be corroborated by observable market data.
—	Level Three: The use of significant unobservable inputs that typically require the use of management’s estimates of assumptions that market participants would use in pricing.


	(Stated in millions)

	US Plan Assets
	2013																2012
	Total				Level				Level				Level				Total				Level				Level		Level
	Total				One				Two				Three				Total				One				Two		Three
Asset Category:
Cash and Cash Equivalents	$	77			$	24			$	53			$	—			$	56			$	5			$	51	$	—
Equity Securities:
US (a)		1,068				625				443								868				502				366
International (b)		572				454				118								513				406				107
Debt Securities:
Corporate bonds (c)		548								548								495								495
Government and government-related debt securities (d)		639				161				478								638				157				481
Collateralized mortgage obligations and mortgage backed securities (e)		99								99								99								99
Alternative Investments:
Private equity (f)		204												204				185										185
Real estate (g)		62												62				56										56
Total	$	3,269			$	1,264			$	1,739			$	266			$	2,910			$	1,070			$	1,599	$	241

	(Stated in millions)

	International Plan Assets
	2013																2012
	Total				Level				Level				Level				Total				Level				Level		Level
	Total				One				Two				Three				Total				One				Two		Three
Asset Category:
Cash and Cash Equivalents	$	267			$	127			$	140			$	—			$	168			$	157			$	11	$	—
Equity Securities:
US (a)		2,175				1,603				572								1,583				1,152				431
International (b)		1,566				990				576								1,258				765				493
Debt Securities:
Corporate bonds (c)		576								576								540								540
Government and government-related debt securities (d)		997				6				991								976								976
Collateralized mortgage obligations and mortgage backed securities (e)		301								301								289								289
Alternative Investments:
Private equity (f)		206												206				128										128
Real estate (g)		60												60				55										55
Other		98												98				123										123
Total	$	6,246			$	2,726			$	3,156			$	364			$	5,120			$	2,074			$	2,740	$	306
(a)	US equities include companies that are well diversified by industry sector and equity style (i.e., growth and value strategies). Active and passive management strategies are employed. Investments are primarily in large capitalization stocks and, to a lesser extent, mid- and small-cap stocks.
(b)	International equities are invested in companies that are traded on exchanges outside the US and are well diversified by industry sector, country and equity style. Active and passive strategies are employed. The vast majority of the investments are made in companies in developed markets with a small percentage in emerging markets.
(c)	Corporate bonds consist primarily of investment grade bonds from diversified industries.
(d)	Government and government-related debt securities are comprised primarily of inflation protected US treasuries and, to a lesser extent, other government-related securities.
(e)	Collateralized mortgage obligations and mortgage backed-securities are debt obligations that represent claims to the cash flows from pools of mortgage loans which are purchased from banks, mortgage companies, and other originators and then assembled into pools by governmental, quasi-governmental and private entities.
(f)	Private equity includes investments in several fund of funds limited partnerships.
(g)	Real estate primarily includes investments in real estate limited partnerships, concentrated in commercial real estate.
Schlumberger’s funding policy is to annually contribute amounts that are based upon a number of factors including the actuarial accrued liability, amounts that are deductible for income tax purposes, legal funding requirements and available cash flow. Schlumberger currently anticipates contributing approximately $500 million to its postretirement benefit plans in 2014, subject to market and business conditions.
Postretirement Benefits Other than Pensions
Schlumberger provides certain health care benefits to former US employees who have retired.
The actuarial assumptions used to determine the accumulated postretirement benefit obligation and net periodic benefit cost for the US postretirement medical plan were as follows:

	Benefit Obligation at December 31,								Net Periodic Benefit
	Benefit Obligation at December 31,								Cost for the year
	2013				2012				2013				2012				2011
Discount rate		4.85	%			4.25	%			4.25	%			5	%			5.5	%
Return on plan assets		—				—				7	%			7	%			7	%
Current medical cost trend rate		7.5	%			7.5	%			7.5	%			8	%			8	%
Ultimate medical cost trend rate		5	%			5	%			5	%			5	%			5	%
Year that the rate reaches the ultimate trend rate		2023				2023				2023				2018				2017
The net periodic benefit cost for the US postretirement medical plan included the following components:

	(Stated in millions)

	2013				2012				2011
Service cost — benefits earned during the period	$	48			$	29			$	24
Interest cost on projected benefit obligation		56				58				57
Expected return on plan assets		(37	)			(30	)			(20	)
Amortization of net loss		23				16				13
Amortization of prior service credit		(4	)			(7	)			(11	)
	$	86			$	66			$	63
The changes in the accumulated postretirement benefit obligation, plan assets and funded status were as follows:

	(Stated in millions)

	2013				2012
Change in Accumulated Postretirement Benefit Obligation
Benefit obligation at beginning of year	$	1,410			$	1,188
Service cost		48				29
Interest cost		56				58
Contributions by plan participants		6				6
Actuarial (gains) losses		(232	)			171
Benefits paid		(41	)			(42	)
Benefit obligation at end of year	$	1,247			$	1,410
Change in Plan Assets
Plan assets at fair value at beginning of year	$	576			$	443
Company contributions		83				106
Contributions by plan participants		6				6
Benefits paid		(41	)			(42	)
Actual return on plan assets		107				63
Plan assets at fair value at end of year	$	731			$	576
Unfunded Liability	$	(516	)		$	(834	)
Amounts Recognized in Accumulated Other Comprehensive Loss
Actuarial losses	$	87			$	411
Prior service credit		(12	)			(16	)
	$	75			$	395
The unfunded liability is included in Postretirement Benefits in the Consolidated Balance Sheet.
The assets of the US postretirement medical plan are invested 61% in equity securities and 39% debt securities at December 31, 2013. The fair value of these assets was primarily determined based on Level Two valuation techniques.
Assumed health care cost trend rates have a significant effect on the amounts reported for the US postretirement medical plan. A one percentage point change in assumed health care cost trend rates would have the following effects:

	(Stated in millions)

	One percentage				One percentage
	point increase				point decrease
Effect on total service and interest cost components	$	47			$	(33	)
Effect on accumulated postretirement benefit obligation	$	267			$	(195	)
Other Information
The expected benefits to be paid under the US and International pension plans as well as the postretirement medical plan (which is disclosed net of the annual Medicare Part D subsidy, which ranges from $4 million to $9 million per year) were as follows:

	(Stated in millions)

	Pension Benefits								Postretirement
	US				International				Medical Plan
2014	$	147			$	204			$	46
2015		153				217				49
2016		160				236				53
2017		168				251				57
2018		177				275				61
2019 - 2023		1,038				1,562				376
Included in Accumulated other comprehensive loss at December 31, 2013 are non-cash pretax charges which have not yet been recognized in net periodic benefit cost. The estimated portion of each component of Accumulated other comprehensive loss which is expected to be recognized as a component of net periodic benefit cost during the year ending December 31, 2014 is as follows:

	(Stated in millions)

	Pension				Postretirement
	Plans				Medical Plan
Net actuarial losses	$	153			$	2
Prior service cost (credit)	$	133			$	(4	)
In addition to providing defined pension benefits and a postretirement medical plan, Schlumberger and its subsidiaries have other deferred benefit programs, primarily profit sharing and defined contribution pension plans. Expenses for these programs were $671 million, $620 million and $582 million in 2013, 2012 and 2011, respectively.

Supplementary_Information

Supplementary Information	12 Months Ended
Supplementary Information	Dec. 31, 2013
Supplementary Information	'
	19. Supplementary Information
	Cash paid for interest and income taxes was as follows:
		(Stated in millions)

		2013			2012			2011
	Interest	$	369		$	313		$	294
	Income taxes	$	1,729		$	1,736		$	1,836
	Interest and other income includes the following:
		(Stated in millions)

		2013			2012			2011
	Interest income	$	33		$	30		$	40
	Equity in net earnings of affiliated companies		132			142			90
		$	165		$	172		$	130
	Allowance for doubtful accounts is as follows:
		(Stated in millions)

		2013			2012			2011
	Balance at beginning of year	$	202		$	177		$	185
	Provision		205			37			37
	Amounts written off		(23	)		(10	)		(45	)
	Divestiture of business		—			(2	)		—
	Balance at end of year	$	384		$	202		$	177

	Accounts payable and accrued liabilities are summarized as follows:
		(Stated in millions)

		2013			2012
	Payroll, vacation and employee benefits	$	1,910		$	1,825
	Trade		4,155			3,550
	Other		2,772			3,078
		$	8,837		$	8,453

Discontinued_Operations

Discontinued Operations	12 Months Ended
Discontinued Operations	Dec. 31, 2013
Discontinued Operations	'
	20. Discontinued Operations
	During the second quarter of 2013, Schlumberger completed the wind down of its operations in Iran and, therefore, has classified the historical results of this business as a discontinued operation.
	During the second quarter of 2012, Schlumberger sold its Wilson distribution business to National Oilwell Varco Inc. (“NOV”) for $906 million in cash, resulting in a pretax gain of $137 million ($16 million after-tax). During the third quarter of 2012, Schlumberger completed the sale of its 56% interest in CE Franklin Ltd. to NOV for $122 million in cash, resulting in a pretax gain of $30 million ($12 million after-tax). As Wilson and CE Franklin comprised Schlumberger’s entire Distribution segment, the results of this entire segment have been classified as discontinued operations in the Consolidated Statement of Income.
	During the second quarter of 2011, Schlumberger completed the divestiture of its Global Connectivity Services business for $385 million in cash. An after-tax gain of $220 million was recognized in connection with this transaction, and is classified in Income (loss) from discontinued operations in the Consolidated Statement of Income. The historical results of this business were not significant to Schlumberger’s consolidated financial statements and, as such, have not been reclassified to discontinued operations.
	The following table summarizes the results of these discontinued operations:

		(Stated in millions)

		2013			2012			2011
	Revenue	$	102		$	1,399		$	2,961
	Income (loss) before taxes	$	(63	)	$	274		$	320
	Tax expense		(6	)		(37	)		(53	)
	Net income attributable to noncontrolling interests		—			(5	)		(6	)
	Gain on divestitures, net of tax		—			28			220
	Income (loss) from discontinued operations	$	(69	)	$	260		$	481

Summary_of_Accounting_Policies1

Summary of Accounting Policies (Policies)	12 Months Ended
Summary of Accounting Policies (Policies)	Dec. 31, 2013
Principles of Consolidation	'
	Principles of Consolidation
	The accompanying Consolidated Financial Statements include the accounts of Schlumberger, its wholly-owned subsidiaries, and other subsidiaries over which it exercises a controlling financial interest. All significant intercompany transactions and balances have been eliminated.
Reclassifications	'
	Reclassifications
	Certain prior year items have been reclassified to conform to the current year presentation.
Use of Estimates	'
	Use of Estimates
	The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. On an on-going basis, Schlumberger evaluates its estimates, including those related to collectibility of accounts receivable; recoverability of deferred costs, goodwill, intangible assets and investments in affiliates; income taxes; multiclient seismic data; contingencies and actuarial assumptions for employee benefit plans. Schlumberger bases its estimates on historical experience and on other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.
Revenue Recognition	'
	Revenue Recognition
	Schlumberger recognizes revenue based upon purchase orders, contracts or other persuasive evidence of an arrangement with the customer that include fixed or determinable prices provided that collectibility is reasonably assured. Revenue is recognized for services when they are rendered. Revenue is recognized for products upon delivery, when the customer assumes the risks and rewards of ownership.
	Revenue from seismic contract services performed on a dayrate basis is recognized as the service is performed. Revenue from other services, including pre-funded multiclient surveys, is recognized as the seismic data is acquired and/or processed on a proportionate basis as work is performed. This method requires revenue to be recognized based upon quantifiable measures of progress, such as square kilometers acquired. Multiclient data surveys are licensed or sold to customers on a non-transferable basis. Revenue from sales of completed multiclient data surveys is recognized upon obtaining a signed licensing agreement and providing customers with access to such data.
	Revenue is occasionally generated from contractual arrangements that include multiple deliverables. Revenue from these arrangements is recognized as each item is delivered based on their relative fair value and when the delivered items have stand-alone value to the customer.
	Revenue derived from the sale of licenses of Schlumberger software may include installation, maintenance, consulting and training services. If services are not essential to the functionality of the software, the revenue for each element of the contract is recognized separately based on its respective vendor specific objective evidence of fair value when all of the following conditions are met: a signed contract is obtained, delivery has occurred, the fee is fixed or determinable and collectibility is probable.
Translation of Non-United States Currencies	'
	Translation of Non-United States Currencies
	The functional currency of Schlumberger is primarily the US dollar. Assets and liabilities recorded in functional currencies other than US dollars are translated at period end exchange rates. The resulting adjustments are charged or credited directly to the Equity section of the Consolidated Balance Sheet. Revenue and expenses are translated at the weighted-average exchange rates for the period. Realized and unrealized transaction gains and losses are included in income in the period in which they occur. Transaction losses of $24 million, $37 million and $25 million, net of hedging activities, were recognized in 2013, 2012 and 2011, respectively.
Short-term and Fixed Income Investments	'
	Short-term and Fixed Income Investments
	The Consolidated Balance Sheet reflects the Schlumberger investment portfolio separated between current and long term, based on maturity. Both Short-term investments and Fixed Income Investments, held to maturity are comprised primarily of money market funds, eurodollar time deposits, certificates of deposit, commercial paper, euro notes and Eurobonds, and are substantially denominated in US dollars. Under normal circumstances it is the intent of Schlumberger to hold the investments until maturity, with the exception of investments that are considered trading ($194 million at both December 31, 2013 and 2012). Short-term investments that are designated as trading are stated at fair value, which is estimated using quoted market prices for those or similar investments. All other investments are stated at cost plus accrued interest, which approximates market. The unrealized gains/losses on investments designated as trading were not significant at both December 31, 2013 and 2012.
	For purposes of the Consolidated Statement of Cash Flows, Schlumberger does not consider Short-term investments to be cash equivalents.
	Fixed Income Investments, held to maturity at December 31, 2013 of $363 million mature as follows: $51 million in 2015, $23 million in 2016, $51 million in 2017 and $238 million in 2018.
Inventories	'
	Inventories
	Inventories are stated at average cost or at market, whichever is lower. Costs included in Inventories consist of materials, direct labor and manufacturing overhead.
Investments in Affiliated Companies	'
	Investments in Affiliated Companies
	Investments in companies in which Schlumberger does not have a controlling financial interest, but over which it has significant influence are accounted for using the equity method. Schlumberger’s share of the after-tax earnings of equity method investees is included in Interest and other income. Investments in privately held companies in which Schlumberger does not have the ability to exercise significant influence are accounted for using the cost method. Investments in publicly traded companies in which Schlumberger does not have significant influence are accounted for as available-for-sale marketable securities. These marketable securities are reported at fair value, based on quoted market prices, with unrealized gains and losses reported as a component of Accumulated other comprehensive loss. The fair value of these marketable securities was $257 million and $222 million at December 31, 2013 and 2012, respectively. The cost basis of these marketable securities was $81 million at both December 31, 2013 and 2012.
	Equity and cost method investments as well as investments in publicly traded companies are classified as Investments in Affiliated Companies in the Consolidated Balance Sheet.
Fixed Assets and Depreciation	'
	Fixed Assets and Depreciation
	Fixed assets are stated at cost less accumulated depreciation, which is provided for by charges to income over the estimated useful lives of the assets using the straight-line method. Fixed assets include the manufacturing cost of oilfield technical equipment manufactured or assembled by subsidiaries of Schlumberger. Expenditures for replacements and improvements are capitalized. Maintenance and repairs are charged to operating expenses as incurred. Upon sale or other disposition, the applicable amounts of asset cost and accumulated depreciation are removed from the balance sheet and the net amount, less proceeds from disposal, is charged or credited to income.
Multiclient Seismic Data	'
	Multiclient Seismic Data
	The multiclient library consists of completed and in-process seismic surveys that are licensed on a nonexclusive basis. Schlumberger capitalizes costs directly incurred in acquiring and processing the multiclient seismic data. Such costs are charged to Cost of revenue based on the percentage of the total costs to the estimated total revenue that Schlumberger expects to receive from the sales of such data. However, under no circumstance will an individual survey carry a net book value greater than a 4-year, straight-line amortized value.
	The carrying value of the multiclient library is reviewed for impairment annually as well as when an event or change in circumstance indicating impairment may have occurred. Adjustments to the carrying value are recorded when it is determined that estimated future cash flows, which involves significant judgment on the part of Schlumberger, would not be sufficient to recover the carrying value of the surveys. Significant adverse changes in Schlumberger’s estimated future cash flows could result in impairment charges in a future period.
Goodwill, Other Intangibles and Long-lived Assets	'
	Goodwill, Other Intangibles and Long-lived Assets
	Schlumberger records the excess of purchase price over the fair value of the tangible and identifiable intangible assets acquired as goodwill. The goodwill relating to each of Schlumberger’s reporting units is tested for impairment annually as well as when an event, or change in circumstances, indicates an impairment may have occurred.
	Under generally accepted accounting principles, Schlumberger has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of one of its reporting units is greater than its carrying amount. If, after assessing the totality of events or circumstances, Schlumberger determines it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, then there is no need to perform any further testing. However, if Schlumberger concludes otherwise, then it is required to perform the first step of a two-step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit. If the fair value of the reporting unit is less than its carrying value, an impairment loss is recorded to the extent that the implied fair value of the goodwill of the reporting unit is less than its carrying value.
	Schlumberger has the option to bypass the qualitative assessment for any reporting unit in any period and proceed directly to performing the first step of the two-step goodwill impairment test.
	For purposes of performing the impairment test for goodwill, Schlumberger’s reporting units are its three Groups: Reservoir Characterization, Drilling and Production. Schlumberger elected to perform the qualitative assessment described above for purposes of its annual goodwill impairment test. Based on this assessment, Schlumberger concluded that it was more likely than not that the fair value of each of its reporting units was greater than its carrying amount. Accordingly, no further testing was required.
	Long-lived assets, including fixed assets and intangible assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. In reviewing for impairment, the carrying value of such assets is compared to the estimated undiscounted future cash flows expected from the use of the assets and their eventual disposition. If such cash flows are not sufficient to support the asset’s recorded value, an impairment charge is recognized to reduce the carrying value of the long-lived asset to its estimated fair value. The determination of future cash flows as well as the estimated fair value of long-lived assets involve significant estimates on the part of management. If there is a material change in economic conditions or other circumstances influencing the estimate of future cash flows or fair value, Schlumberger could be required to recognize impairment charges in the future.
	Intangible assets consist primarily of customer relationships, technology/technical know-how and tradenames acquired in business combinations. Customer relationships are generally amortized over periods ranging from 15 to 28 years, acquired technology/technical know-how are generally amortized over periods ranging from 10 to 18 years and tradenames are generally amortized over periods ranging from 15 to 30 years.
Taxes on Income	'
	Taxes on Income
	Schlumberger computes taxes on income in accordance with the tax rules and regulations of the many taxing authorities where the income is earned. The income tax rates imposed by these taxing authorities vary substantially. Taxable income may differ from pretax income for financial accounting purposes. To the extent that differences are due to revenue or expense items reported in one period for tax purposes and in another period for financial accounting purposes, an appropriate provision for deferred income taxes is made. Any effect of changes in income tax rates or tax laws are included in the provision for income taxes in the period of enactment. When it is more likely than not that a portion or all of the deferred tax asset will not be realized in the future, Schlumberger provides a corresponding valuation allowance against deferred tax assets.
	Schlumberger’s tax filings are subject to regular audit by the tax authorities in most of the jurisdictions in which it conducts business. These audits may result in assessments for additional taxes which are resolved with the authorities or, potentially, through the courts. Schlumberger recognizes the impact of a tax position in its financial statements if that position is more likely than not of being sustained on audit, based on the technical merits of the position. Tax liabilities are recorded based on estimates of additional taxes which will be due upon the conclusion of these audits. Estimates of these tax liabilities are made based upon prior experience and are updated in light of changes in facts and circumstances. However, due to the uncertain and complex application of tax regulations, it is possible that the ultimate resolution of audits may result in liabilities which could be materially different from these estimates. In such an event, Schlumberger will record additional tax expense or tax benefit in the year in which such resolution occurs.
	Schlumberger generally does not provide income taxes relating to undistributed earnings, as the earnings either would not be taxable when remitted or are considered to be indefinitely reinvested.
Concentration of Credit Risk	'
	Concentration of Credit Risk
	Schlumberger’s assets that are exposed to concentrations of credit risk consist primarily of cash, short-term investments, fixed income investments held to maturity, receivables from clients and derivative financial instruments. Schlumberger places its cash, short-term investments and fixed income investments held to maturity with financial institutions and corporations, and limits the amount of credit exposure with any one of them. Schlumberger regularly evaluates the creditworthiness of the issuers in which it invests. The receivables from clients are spread over many countries and customers. Schlumberger maintains an allowance for uncollectible accounts receivable based on expected collectibility and performs ongoing credit evaluations of its customers’ financial condition. By using derivative financial instruments to hedge exposure to changes in exchange rates and commodity prices, Schlumberger exposes itself to some credit risk. Schlumberger minimizes this credit risk by entering into transactions with high-quality counterparties, limiting the exposure to each counterparty and monitoring the financial condition of its counterparties.
Research & Engineering	'
	Research & Engineering
	All research and engineering expenditures are expensed as incurred.
Earnings per Share	'
	Earnings per Share
	Basic earnings per share of Schlumberger from continuing operations is calculated by dividing income from continuing operations attributable to Schlumberger by the weighted average number of common shares outstanding during the year. Diluted earnings per share is calculated by dividing income from continuing operations attributable to Schlumberger by the sum of (i) unvested restricted stock units and (ii) the weighted average number of common shares outstanding assuming dilution. The weighted average number of common shares outstanding assuming dilution assumes that all stock options which are in the money are exercised at the beginning of the period and that the proceeds are used by Schlumberger to purchase shares of its common stock at the average market price for the period.

Summary_of_Accounting_Policies2

Summary of Accounting Policies (Tables)	12 Months Ended
Summary of Accounting Policies (Tables)	Dec. 31, 2013
Reconciliation of Earnings Per Share	'
	The following is a reconciliation from basic to diluted earnings per share from continuing operations of Schlumberger for each of the last three years:

		(Stated in million except per share amounts)

		Schlumberger		Weighted		Earnings
		Income from		Average		Per Share
		Continuing		Shares		from
		Operations		Outstanding		Continuing
						Operations
	2013:00:00
	Basic	$	6,801		1,323	$	5.14
	Assumed exercise of stock options		—		6
	Unvested restricted stock		—		4
	Diluted	$	6,801		1,333	$	5.1

	2012:00:00
	Basic	$	5,230		1,330	$	3.93
	Assumed exercise of stock options		—		5
	Unvested restricted stock		—		4
	Diluted	$	5,230		1,339	$	3.91

	2011:00:00
	Basic	$	4,516		1,349	$	3.35
	Assumed exercise of stock options		—		10
	Unvested restricted stock		—		2
	Diluted	$	4,516		1,361	$	3.32

Charges_and_Credits_Tables

Charges and Credits (Tables)	12 Months Ended
Charges and Credits (Tables)	Dec. 31, 2013
Summary of the Charges	'
	Schlumberger recorded the following charges and credits in continuing operations during 2013, 2012 and 2011:
	2013

		(Stated in millions)

		Pretax			Tax		Net			Consolidated Statement
		Pretax			Tax		Net			of Income 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
	Provision for accounts receivable		152			30		122		Cost of revenue
	Currency devaluation loss in Venezuela		92			—		92		Impairment & other
		$	(420	)	$	49	$	(469	)

	2012
		(Stated in millions)

		Pretax			Tax		Net			Consolidated Statement
		Pretax			Tax		Net			of Income Classification
	Merger-related integration costs	$	128		$	16	$	112		Merger & integration
	Workforce reduction		33			6		27		Impairment & other
		$	161		$	22	$	139
	2011
		(Stated in millions)

		Pretax			Tax		Net			Consolidated Statement
		Pretax			Tax		Net			of Income Classification
	Merger-related integration costs	$	113		$	18	$	95		Merger & integration
	Donation to the Schlumberger Foundation		50			10		40		General & administrative
	Write-off of assets in Libya		60			—		60		Cost of revenue
		$	223		$	28	$	195

Inventories_Tables

Inventories (Tables)	12 Months Ended
Inventories (Tables)	Dec. 31, 2013
Inventory Disclosure	'
	A summary of inventories follows:

		(Stated in millions)

		2013		2012
	Raw materials & field materials	$	2,539	$	2,519
	Work in process		261		349
	Finished goods		1,803		1,917
		$	4,603	$	4,785

Fixed_Assets_Tables

Fixed Assets (Tables)	12 Months Ended
Fixed Assets (Tables)	Dec. 31, 2013
Property, Plant and Equipment	'
	A summary of fixed assets follows:

		(Stated in millions)

		2013		2012
	Land	$	394	$	366
	Buildings & improvements		3,534		3,209
	Machinery & equipment		29,332		27,690
	Seismic vessels		1,904		1,903
			35,164		33,168
	Less accumulated depreciation		20,068		18,388
		$	15,096	$	14,780

Multiclient_Seismic_Data_Table

Multiclient Seismic Data (Tables)	12 Months Ended
Multiclient Seismic Data (Tables)	Dec. 31, 2013
Multiclient Seismic Data Table	'
	The change in the carrying amount of multiclient seismic data is as follows:

		(Stated in millions)

		2013			2012
	Balance at beginning of year	$	518		$	425
	Capitalized in year		394			351
	Charged to expense		(245	)		(258	)
		$	667		$	518

Goodwill_Tables

Goodwill (Tables)	12 Months Ended
Goodwill (Tables)	Dec. 31, 2013
Changes in Carrying Amount of Goodwill	'
	The changes in the carrying amount of goodwill by reporting unit were as follows:

		(Stated in millions)

		Reservoir			Drilling			Production			Distribution			Total
		Characterization			Drilling			Production			Distribution			Total
	Balance at January 1, 2012	$	3,360		$	8,362		$	2,356		$	76		$	14,154
	Acquisitions		391			93			—			—			484
	Reallocation		—			(125	)		125			—			—
	Divestiture of business		—			—			—			(76	)		(76	)
	Other		9			7			7			—			23
	Balance, December 31, 2012		3,760			8,337			2,488			—			14,585
	Acquisitions		4			3			336			—			343
	Divestiture of business		—			—			(150	)		—			(150	)
	Other		(27	)		(25	)		(20	)		—			(72	)
	Balance, December 31, 2013	$	3,737		$	8,315		$	2,654		$	—		$	14,706

Intangible_Assets_Tables

Intangible Assets (Tables)	12 Months Ended
Intangible Assets (Tables)	Dec. 31, 2013
Schedule of Intangible Assets by Major Class	'
	A summary of intangible assets follows:

		(Stated in millions)

		2013						2012
		Gross		Accumulated		Net Book		Gross		Accumulated		Net Book
		Book Value		Amortization		Value		Book Value		Amortization		Value
	Technology/Technical Know-How	$	1,960	$	597	$	1,363	$	1,967	$	474	$	1,493
	Tradenames		1,647		257		1,390		1,647		188		1,459
	Customer Relationships		2,263		407		1,856		2,115		312		1,803
	Other		435		335		100		369		322		47
		$	6,305	$	1,596	$	4,709	$	6,098	$	1,296	$	4,802

Longterm_Debt_and_Debt_Facilit1

Long-term Debt and Debt Facility Agreements (Tables)	12 Months Ended
Long-term Debt and Debt Facility Agreements (Tables)	Dec. 31, 2013
Long-term Debt	'
	Long-term Debt consists of the following:

		(Stated in millions)

		2013		2012
	3.30% Senior Notes due 2021	$	1,596	$	1,595
	3.65% Senior Notes due 2023		1,495		—
	4.50% Guaranteed Notes due 2014 (1)		—		1,324
	2.75% Guaranteed Notes due 2015 (1)		1,373		1,318
	1.95% Senior Notes due 2016		1,099		1,099
	4.20% Senior Notes due 2021		1,099		1,099
	1.25% Senior Notes due 2017		999		999
	2.40% Senior Notes due 2022		999		998
	1.50% Guaranteed Notes due 2019(1)		697		—
	2.65% Senior Notes due 2016 (2)		500		500
	Floating Rate Senior Notes due 2014 (3)		—		300
	Other		536		277
		$	10,393	$	9,509
	(1)	Schlumberger maintains a €5.0 billion Guaranteed Euro Medium Term Note program that provides for the issuance of various types of debt instruments such as fixed or floating rate notes in euro, US dollar or other currencies. The following is a summary of debt issued under this program:
	·	Schlumberger issued €0.5 billion 1.50% Guaranteed Notes due 2019 in the fourth quarter of 2013. Schlumberger entered into agreements to swap these euro notes for US dollars on the date of issue until maturity, effectively making this a US dollar denominated debt on which Schlumberger will pay interest in US dollars at a rate equal to three-month LIBOR plus approximately 64 basis points.
	·	Schlumberger issued €1.0 billion 2.75% Guaranteed Notes due 2015 in the fourth quarter of 2010. Schlumberger entered into agreements to swap these euro notes for US dollars on the date of issue until maturity, effectively making this a US dollar denominated debt on which Schlumberger will pay interest in US dollars at a rate of 2.56%.
	·	Schlumberger issued €1.0 billion 4.50% Guaranteed Notes due 2014 in the first quarter of 2009, Schlumberger entered into agreements to swap these euro notes for US dollars on the date of issue until maturity, effectively making this a US dollar denominated debt on which Schlumberger will pay interest in US dollars at a rate of 4.95%.
	(2)	Schlumberger entered into agreements to swap these dollar notes for euros on the date of issue until maturity, effectively making this a euro-denominated debt on which Schlumberger pays interest in euros at a rate of 2.39%.
	(3)	These notes bear interest at a rate equal to three-month LIBOR plus 55 basis points per year.

Derivative_Instruments_and_Hed1

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
Derivative Instruments and Hedging Activities (Tables)	Dec. 31, 2013
Fair Values of Outstanding Derivative Instruments	'
	The fair values of outstanding derivative instruments are summarized as follows:

		(Stated in millions)

		Fair Value of Derivatives						Consolidated Balance Sheet Classification
	Derivative assets
	Derivative assets	2013			2012
	Derivative designated as hedges:
	Foreign exchange contracts	$	98		$	26		Other current assets
	Foreign exchange contracts		24			22		Other Assets
	Interest rate swaps		27			—		Other Assets
	Interest rate swaps		—			2		Other current assets
			149			50
	Derivative not designated as hedges:
	Foreign exchange contracts		10			10		Other current assets
	Foreign exchange contracts		4			6		Other Assets
			14			16
		$	163		$	66
	Derivative Liabilities
	Derivative designated as hedges:
	Foreign exchange contracts	$	14		$	80		Accounts payable and accrued liabilities
	Foreign exchange contracts		1			19		Other Liabilities
			15			99
	Derivative not designated as hedges:
	Foreign exchange contracts		2			3		Accounts payable and accrued liabilities

		$	17		$	102

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 not designated as hedges on the Consolidated Statement of Income was as follows:

		(Stated in millions)

		Gain (Loss) Recognized in Income									Consolidated Statement of
		2013			2012			2011			Income Classification
	Derivatives designated as fair value hedges:
	Interest rate swaps	$	15		$	1		$	9		Interest expense

	Derivatives not designated as hedges:
	Foreign exchange contracts	$	(2	)	$	5		$	(17	)	Cost of revenue
	Commodity contracts		—			1			(5	)	Cost of revenue
		$	(2	)	$	6		$	(22	)

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									Consolidated Statement of
		AOCL into Income									Consolidated Statement of
		2013			2012			2011			Income Classification
	Foreign exchange contracts	$	58		$	49		$	(25	)	Cost of revenue
	Foreign exchange contracts		(8	)		(13	)		17		Research & engineering
		$	50		$	36		$	(8	)

		(Stated in millions)

		Gain (Loss) Recognized in AOCL
		2013			2012			2011
	Foreign exchange contracts	$	49		$	92		$	(79	)

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	12 Months Ended
Stockholders' Equity (Tables)	Dec. 31, 2013
Schedule of Accumulated Other Comprehensive Loss	'
	Accumulated Other Comprehensive Loss consists of the following:
		(Stated in millions)

		Currency			Fair Value			Pension and			Unrealized		Total
		Translation			of			Other			Gains on Marketable
		Adjustments			Derivatives			Postretirement			Securities
								Benefit Plans
	Balance, January 1, 2011	$	(911	)	$	45		$	(1,902	)	$	—	$	(2,768	)
	Other comprehensive income (loss) before reclassifications		(82	)		(79	)		(1,007	)		—		(1,168	)
	Amounts reclassified from accumulated other comprehensive loss		—			8			254			—		262
	Income taxes		—			—			117			—		117
	Balance, December 31, 2011		(993	)		(26	)		(2,538	)		—		(3,557	)
	Other comprehensive income (loss) before reclassifications		76			92			(1,016	)		141		(707	)
	Amounts reclassified from accumulated other comprehensive loss		—			(36	)		312			—		276
	Income taxes		—			—			100			—		100
	Balance, December 31, 2012		(917	)		30			(3,142	)		141		(3,888	)
	Other comprehensive income (loss) before reclassifications		(151	)		49			1,328			35		1,261
	Amounts reclassified from accumulated other comprehensive loss		—			(50	)		425			—		375
	Income taxes		—			—			(302	)		—		(302	)
	Balance, December 31, 2013	$	(1,068	)	$	29		$	(1,691	)	$	176	$	(2,554	)

Stockbased_Compensation_Plans_

Stock-based Compensation Plans (Tables)	12 Months Ended
Stock-based Compensation Plans (Tables)	Dec. 31, 2013
Weighted-Average Assumptions	'
	The fair value of each stock option grant was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions and resulting weighted-average fair value per share:

		2013			2012			2011
	Dividend yield		1.7	%		1.5	%		1.2	%
	Expected volatility		38	%		39	%		37	%
	Risk free interest rate		1.2	%		1.5	%		2.8	%
	Expected option life in years		7			6.9			6.9
	Weighted-average fair value per share	$	23.93		$	25.26		$	31.38

Options Outstanding and Option Exercisable	'
	The following table summarizes information concerning options outstanding and options exercisable as of December 31, 2013:

			(Shares stated in thousands)

			Options Outstanding									Options Exercisable
	Exercise prices range		Options			Weighted-			Weighted-			Options			Weighted-
			Outstanding			average			average			Exercisable			average
						remaining			exercise						exercise
						contractual life			price						price
						(in years)
	$23.75 - $56.61			7,244			3.8		$	45.23			6,257		$	45.84
	$58.45 - $68.83			8,458			5.5		$	65.82			5,125		$	64.7
	$70.31 - $78.35			13,765			8.6		$	71.94			1,289		$	72.25
	$83.88 - $84.93			10,005			6.1		$	84.21			5,762		$	84.45
	$89.99 - $110.77			2,467			5.8		$	94.31			1,658		$	96.29
				41,939			6.4		$	70.33			20,091		$	67.58

Summary of Stock Option Activity	'
	The following table summarizes stock option activity during the years ended December 31, 2013, 2012 and 2011:

		(Shares stated in thousands)

		2013						2012						2011
		Shares			Weighted-			Shares			Weighted-			Shares			Weighted-
					average						average						average
					exercise						exercise						exercise
					price						price						price
	Outstanding at beginning of year		42,059		$	67.77			40,027		$	63.84			37,499		$	55.33
	Granted		6,570		$	72.16			8,664		$	72.04			9,528		$	84.29
	Exercised		(5,168	)	$	51.73			(4,171	)	$	39.07			(5,470	)	$	42.36
	Forfeited		(1,522	)	$	70.57			(2,461	)	$	67.5			(1,530	)	$	58.82
	Outstanding at year-end		41,939		$	70.33			42,059		$	67.77			40,027		$	63.84

Restricted Stock Transactions	'
	The following table summarizes information about all restricted stock transactions:

		(Shares stated in thousands)

		2013						2012						2011
		Restricted			Weighted			Restricted			Weighted			Restricted			Weighted
		Stock			Average			Stock			Average			Stock			Average
					Grant Date						Grant Date						Grant Date
					Fair Value						Fair Value						Fair Value
	Unvested at beginning of year		3,566		$	73.62			2,433		$	72.25			2,223		$	64.27
	Granted		1,949			75.65			1,668			71.09			1,136			84.61
	Vested		(958	)		66.98			(351	)		52.26			(767	)		67.36
	Forfeited		(386	)		74.53			(184	)		73.38			(159	)		72.51
	Unvested at end of year		4,171		$	76.01			3,566		$	73.62			2,433		$	72.25

Discounted Stock Purchase Plan Assumptions and Resulting Weighted Average Fair Value	'
	The fair value of the employees’ purchase rights under the DSPP was estimated using the Black-Scholes model with the following assumptions and resulting weighted average fair value per share:

		2013			2012			2011
	Dividend yield		1.7	%		1.6	%		1.2	%
	Expected volatility		24	%		41	%		28	%
	Risk free interest rate		0.1	%		0.2	%		0.2	%
	Weighted average fair value per share	$	9.91		$	12.71		$	12.83

Stock-Based Compensation Expense Recognized in Income	'
	The following summarizes stock-based compensation expense recognized in income:

		(Stated in millions)

		2013			2012			2011
	Stock options	$	165		$	203		$	176
	Restricted stock		110			82			60
	DSPP		40			50			36
		$	315		$	335		$	272

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2013
Income Tax Disclosure Table	'
	Income from continuing operations before taxes which were subject to United States and non-United States income taxes for each of the three years ended December 31, were as follows:

		(Stated in millions)

		2013			2012			2011
	United States	$	1,904		$	1,980		$	2,246
	Outside United States		6,787			4,979			3,772
		$	8,691		$	6,959		$	6,018

Components of Net Deferred Tax Assets	'
	The components of net deferred tax assets (liabilities) were as follows:

		(Stated in millions)

		2013			2012
	Postretirement benefits	$	236		$	543
	Intangible assets		(1,502	)		(1,490	)
	Investments in non-US subsidiaries		(282	)		(317	)
	Other, net		128			114
		$	(1,420	)	$	(1,150	)

Components of Consolidated Income Taxes	'
	The components of Taxes on income were as follows:

		(Stated in millions)

		2013			2012			2011
	Current:
	United States - Federal	$	682		$	698		$	809
	United States - State		60			53			42
	Outside United States		1,211			1,025			667
		$	1,953		$	1,776		$	1,518
	Deferred:
	United States - Federal	$	(109	)	$	(105	)	$	(73	)
	United States - State		(4	)		(7	)		(7	)
	Outside United States		34			22			75
	Valuation allowance		(26	)		14			(21	)
		$	(105	)	$	(76	)	$	(26	)
		$	1,848		$	1,700		$	1,492

Reconciliation of US Statutory Federal Tax Rate	'
	A reconciliation of the United States statutory federal tax rate (35%) to the consolidated effective tax rate is:

		2013			2012			2011
	US statutory federal rate		35	%		35	%		35	%
	Non-US income taxed at different rates		(12	)		(10	)		(9	)
	Charges and credits (See Note 3)		(2	)		—			—
	Other		—			(1	)		(1	)
			21	%		24	%		25	%

Reconciliation of Liabilities Associated with Uncertain Tax Provisions	'
	A reconciliation of the beginning and ending amount of liabilities associated with uncertain tax positions for the years ended December 31, 2013, 2012 and 2011 is as follows:

		(Stated in millions)

		2013			2012			2011
	Balance at beginning of year	$	1,453		$	1,353		$	1,338
	Additions based on tax positions related to the current year		146			156			153
	Additions for tax positions of prior years		109			98			49
	Additions related to acquisitions		—			—			48
	Impact of changes in exchange rates		(47	)		12			(18	)
	Settlements with tax authorities		(64	)		(17	)		(77	)
	Reductions for tax positions of prior years		(109	)		(103	)		(102	)
	Reductions due to the lapse of the applicable statute of limitations		(36	)		(46	)		(38	)
	Balance at end of year	$	1,452		$	1,453		$	1,353

Tax Years Subject to Examination by Tax Authorities	'
	The following table summarizes the tax years that are either currently under audit or remain open and subject to examination by the tax authorities in the most significant jurisdictions in which Schlumberger operates:

	Brazil	2008 - 2013
	Canada	2006 - 2013
	Mexico	2007 - 2013
	Norway	2013
	Russia	2010 - 2013
	Saudi Arabia	2001 - 2013
	United Kingdom	2009 - 2013
	United States	2008 - 2013

Leases_and_Lease_Commitments_T

Leases and Lease Commitments (Tables)	12 Months Ended
	Dec. 31, 2013
Future Minimum Rental Commitments Under Noncancelable Operating Leases	'
	Future minimum rental commitments under noncancelable operating leases for each of the next five years are as follows:



	(Stated in millions)

	2014	$	318
	2015		246
	2016		195
	2017		165
	2018		136
	Thereafter		558
		$	1,618

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
Segment Information (Tables)	Dec. 31, 2013
Schedule of Segment Reporting Information, by Segment	'
	Financial information for the years ended December 31, 2013, 2012 and 2011, by segment, is as follows:

		(Stated in millions)

		2013
		Revenue			Income			Assets		Depreciation		Capital
					before					and		Expenditures
					taxes					Amortization
	OILFIELD SERVICES
	Reservoir Characterization	$	12,246		$	3,647		$	8,807	$	1,332	$	1,275
	Drilling		17,317			3,309			11,069		1,088		1,291
	Production		15,927			2,619			10,033		821		1,204
	Eliminations & other		(224	)		(231	)		1,954		217		173
			45,266			9,344			31,863		3,458		3,943
	Goodwill and intangible assets								19,415
	All other assets								3,772
	Corporate (1)					(726	)		12,050		208
	Interest income (2)					22
	Interest expense (3)					(369	)
	Charges & credits (4)					420
		$	45,266		$	8,691		$	67,100	$	3,666	$	3,943

		(Stated in millions)

		2012
		Revenue			Income			Assets		Depreciation		Capital
					before					and		Expenditures
					taxes					Amortization
	OILFIELD SERVICES
	Reservoir Characterization	$	11,159		$	3,069		$	8,558	$	1,311	$	1,235
	Drilling		15,892			2,789			10,989		1,086		1,668
	Production		14,802			2,327			9,579		724		1,439
	Eliminations & other		(122	)		(68	)		2,065		181		352
			41,731			8,117			31,191		3,302		4,694
	Goodwill and intangible assets								19,387
	Discontinued operations assets								246
	All other assets								2,702
	Corporate (1)					(696	)		8,021		198
	Interest income (2)					30
	Interest expense (3)					(331	)
	Charges & credits (4)					(161	)
		$	41,731		$	6,959		$	61,547	$	3,500	$	4,694

		(Stated in millions)
		2011
		Revenue			Income			Assets		Depreciation and		Capital
					before					Amortization		Expenditures
					taxes
	OILFIELD SERVICES
	Reservoir Characterization	$	9,740		$	2,347		$	7,480	$	1,285	$	1,055
	Drilling		13,775			2,218			9,055		982		1,419
	Production		13,030			2,554			7,962		643		1,382
	Eliminations & other		34			(35	)		1,958		162		148
			36,579			7,084			26,455		3,072		4,004
	Goodwill and intangible assets								18,932
	Discontinued operations assets								1,280
	All other assets								2,201
	Corporate (1)					(590	)		6,333		202
	Interest income (2)					37
	Interest expense (3)					(290	)
	Charges & credits (4)					(223	)
		$	36,579		$	6,018		$	55,201	$	3,274	$	4,004

Revenue by Geographic Area	'
	Revenue by geographic area for the years ended December 31, 2013, 2012 and 2011 is as follows:

		(Stated in millions)

		2013			2012			2011
	North America	$	13,897		$	13,535		$	12,378
	Latin America		7,751			7,554			6,467
	Europe/CIS/Africa		12,366			11,444			9,676
	Middle East & Asia		10,810			8,775			7,722
	Eliminations & other		442			423			336
		$	45,266		$	41,731		$	36,579

Fixed Assets Less Accumulated Depreciation by Geographic Area	'
	Fixed Assets less accumulated depreciation by geographic area are as follows:

		(Stated in millions)

		2013			2012			2011
	North America	$	4,858		$	4,868		$	4,230
	Latin America		1,889			1,788			1,472
	Europe/CIS/Africa		3,452			3,414			3,341
	Middle East & Asia		2,991			2,908			2,233
	Unallocated (1)		1,906			1,802			1,717
		$	15,096		$	14,780		$	12,993
	(1)	Represents seismic vessels, including the related on-board equipment, which frequently transition between geographic areas.

Pension_and_Other_Benefit_Plan1

Pension and Other Benefit Plans (Tables)	12 Months Ended
Pension and Other Benefit Plans (Tables)	Dec. 31, 2013
Weighted-Average Assumed Discount Rate, Compensation Increases and Expected Long-Term Rate of Return on Plan Assets Used to Determine Net Pension Cost for US and International Plans	'
	The weighted-average assumed discount rate, compensation increases and the expected long-term rate of return on plan assets used to determine the net pension cost for the US and International plans were as follows:

		US									International
		2013			2012			2011			2013			2012			2011
	Discount rate		4.25	%		5	%		5.5	%		4.38	%		4.95	%		5.47	%
	Compensation increases		4	%		4	%		4	%		4.83	%		4.91	%		4.91	%
	Return on plan assets		7.5	%		7.5	%		7.5	%		7.5	%		7.5	%		7.5	%

Net Pension Cost for Schlumberger Pension Plans and US Postretirement Medical Plan	'
	Net pension cost for 2013, 2012 and 2011 included the following components:

		(Stated in millions)

		US									International
		2013			2012			2011			2013			2012			2011
	Service cost - benefits earned during the period	$	80		$	68		$	59		$	127		$	86		$	64
	Interest cost on projected benefit obligation		150			152			150			253			241			226
	Expected return on plan assets		(200	)		(185	)		(170	)		(384	)		(328	)		(279	)
	Amortization of net loss		122			95			89			155			76			31
	Amortization of prior service cost		12			12			12			117			120			120
		$	164		$	142		$	140		$	268		$	195		$	162

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

		(Stated in millions)

		2013			2012			2011
	Service cost — benefits earned during the period	$	48		$	29		$	24
	Interest cost on projected benefit obligation		56			58			57
	Expected return on plan assets		(37	)		(30	)		(20	)
	Amortization of net loss		23			16			13
	Amortization of prior service credit		(4	)		(7	)		(11	)
		$	86		$	66		$	63

Weighted-Average Assumed Discount Rate and Compensation Increases Used to Determine Projected Benefit Obligations for US and International Plans	'
	The weighted-average assumed discount rate and compensation increases used to determine the projected benefit obligations for the US and International plans were as follows:

		US						International
		2013			2012			2013			2012
	Discount rate		4.85	%		4.25	%		4.76	%		4.38	%
	Compensation increases		4	%		4	%		4.8	%		4.83	%

Changes in Projected Benefit Obligation, Plan Assets and Funded Status of Plans	'
	The changes in the projected benefit obligation, plan assets and funded status of the plans were as follows:

		(Stated in millions)

		US						International
		2013			2012			2013			2012
	Change in Projected Benefit Obligations
	Projected benefit obligation at beginning of year	$	3,558		$	3,073		$	5,798		$	4,666
	Service cost		80			68			127			86
	Interest cost		150			152			253			241
	Contributions by plan participants		—			—			104			97
	Actuarial (gains) losses		-232			399			(168	)		786
	Currency effect		—			—			30			62
	Benefits paid		(138	)		(134	)		(163	)		(140	)
	Projected benefit obligation at end of year	$	3,418		$	3,558		$	5,981		$	5,798
	Change in Plan Assets
	Plan assets at fair value at beginning of year	$	2,910		$	2,655		$	5,120		$	4,097
	Actual return on plan assets		356			336			836			490
	Currency effect		—			—			35			62
	Company contributions		141			53			314			514
	Contributions by plan participants		—			—			104			97
	Benefits paid		(138	)		(134	)		(163	)		(140	)
	Plan assets at fair value at end of year	$	3,269		$	2,910		$	6,246		$	5,120
	(Unfunded Liability) / Asset	$	(149	)	$	(648	)	$	265		$	(678	)
	Amounts Recognized in Balance Sheet
	Postretirement Benefits	$	(149	)	$	(648	)	$	(5	)	$	(687	)
	Other Assets		—			—			270			9
		$	(149	)	$	(648	)	$	265		$	(678	)
	Amounts Recognized in Accumulated Other Comprehensive Loss
	Actuarial losses	$	687		$	1,197		$	882		$	1,234
	Prior service cost		78			90			418			598
		$	765		$	1,287		$	1,300		$	1,832
	Accumulated benefit obligation	$	3,158		$	3,262		$	5,593		$	5,401

Weighted-Average Allocation of Plan Assets and Target Allocation by Asset Category	'
	The weighted-average allocation of plan assets and the target allocations by asset category are as follows:

		US									International
		Target			2013			2012			Target			2013			2012
	Equity securities		45 - 55	%		50	%		47	%		50 - 70	%		60	%		56	%
	Debt securities		33 - 45			40			42			25 - 40			31			35
	Cash and cash equivalents		0 - 3			2			2			0 - 3			3			3
	Alternative investments		0 - 10			8			9			0 - 20			6			6
			100	%		100	%		100	%		100	%		100	%		100	%

Fair Value of Schlumberger's Pension Plan Assets	'

		(Stated in millions)

		US Plan Assets
		2013												2012
		Total			Level			Level			Level			Total			Level			Level		Level
		Total			One			Two			Three			Total			One			Two		Three
	Asset Category:
	Cash and Cash Equivalents	$	77		$	24		$	53		$	—		$	56		$	5		$	51	$	—
	Equity Securities:
	US (a)		1,068			625			443						868			502			366
	International (b)		572			454			118						513			406			107
	Debt Securities:
	Corporate bonds (c)		548						548						495						495
	Government and government-related debt securities (d)		639			161			478						638			157			481
	Collateralized mortgage obligations and mortgage backed securities (e)		99						99						99						99
	Alternative Investments:
	Private equity (f)		204									204			185								185
	Real estate (g)		62									62			56								56
	Total	$	3,269		$	1,264		$	1,739		$	266		$	2,910		$	1,070		$	1,599	$	241

		(Stated in millions)

		International Plan Assets
		2013												2012
		Total			Level			Level			Level			Total			Level			Level		Level
		Total			One			Two			Three			Total			One			Two		Three
	Asset Category:
	Cash and Cash Equivalents	$	267		$	127		$	140		$	—		$	168		$	157		$	11	$	—
	Equity Securities:
	US (a)		2,175			1,603			572						1,583			1,152			431
	International (b)		1,566			990			576						1,258			765			493
	Debt Securities:
	Corporate bonds (c)		576						576						540						540
	Government and government-related debt securities (d)		997			6			991						976						976
	Collateralized mortgage obligations and mortgage backed securities (e)		301						301						289						289
	Alternative Investments:
	Private equity (f)		206									206			128								128
	Real estate (g)		60									60			55								55
	Other		98									98			123								123
	Total	$	6,246		$	2,726		$	3,156		$	364		$	5,120		$	2,074		$	2,740	$	306
	(a)	US equities include companies that are well diversified by industry sector and equity style (i.e., growth and value strategies). Active and passive management strategies are employed. Investments are primarily in large capitalization stocks and, to a lesser extent, mid- and small-cap stocks.
	(b)	International equities are invested in companies that are traded on exchanges outside the US and are well diversified by industry sector, country and equity style. Active and passive strategies are employed. The vast majority of the investments are made in companies in developed markets with a small percentage in emerging markets.
	(c)	Corporate bonds consist primarily of investment grade bonds from diversified industries.
	(d)	Government and government-related debt securities are comprised primarily of inflation protected US treasuries and, to a lesser extent, other government-related securities.
	(e)	Collateralized mortgage obligations and mortgage backed-securities are debt obligations that represent claims to the cash flows from pools of mortgage loans which are purchased from banks, mortgage companies, and other originators and then assembled into pools by governmental, quasi-governmental and private entities.
	(f)	Private equity includes investments in several fund of funds limited partnerships.
	(g)	Real estate primarily includes investments in real estate limited partnerships, concentrated in commercial real estate.
Defined Benefit Plan Weighted Average Assumptions Used in Calculating Benefit Obligation and Net Periodic Benefit Cost for US Postretirement Medical Plan	'
	The actuarial assumptions used to determine the accumulated postretirement benefit obligation and net periodic benefit cost for the US postretirement medical plan were as follows:

		Benefit Obligation at December 31,						Net Periodic Benefit
		Benefit Obligation at December 31,						Cost for the year
		2013			2012			2013			2012			2011
	Discount rate		4.85	%		4.25	%		4.25	%		5	%		5.5	%
	Return on plan assets		—			—			7	%		7	%		7	%
	Current medical cost trend rate		7.5	%		7.5	%		7.5	%		8	%		8	%
	Ultimate medical cost trend rate		5	%		5	%		5	%		5	%		5	%
	Year that the rate reaches the ultimate trend rate		2023			2023			2023			2018			2017

Changes in Accumulated Postretirement Benefit Obligation, Plan Assets and Funded Status	'
	The changes in the accumulated postretirement benefit obligation, plan assets and funded status were as follows:

		(Stated in millions)

		2013			2012
	Change in Accumulated Postretirement Benefit Obligation
	Benefit obligation at beginning of year	$	1,410		$	1,188
	Service cost		48			29
	Interest cost		56			58
	Contributions by plan participants		6			6
	Actuarial (gains) losses		(232	)		171
	Benefits paid		(41	)		(42	)
	Benefit obligation at end of year	$	1,247		$	1,410
	Change in Plan Assets
	Plan assets at fair value at beginning of year	$	576		$	443
	Company contributions		83			106
	Contributions by plan participants		6			6
	Benefits paid		(41	)		(42	)
	Actual return on plan assets		107			63
	Plan assets at fair value at end of year	$	731		$	576
	Unfunded Liability	$	(516	)	$	(834	)
	Amounts Recognized in Accumulated Other Comprehensive Loss
	Actuarial losses	$	87		$	411
	Prior service credit		(12	)		(16	)
		$	75		$	395

Effect of One Percentage Point Change in Assumed Health Care Cost Trend Rates	'
	Assumed health care cost trend rates have a significant effect on the amounts reported for the US postretirement medical plan. A one percentage point change in assumed health care cost trend rates would have the following effects:

		(Stated in millions)

		One percentage			One percentage
		point increase			point decrease
	Effect on total service and interest cost components	$	47		$	(33	)
	Effect on accumulated postretirement benefit obligation	$	267		$	(195	)

Expected Benefits to be Paid Under US and International Pension Plans and Postretirement Medical Plan	'
	The expected benefits to be paid under the US and International pension plans as well as the postretirement medical plan (which is disclosed net of the annual Medicare Part D subsidy, which ranges from $4 million to $9 million per year) were as follows:

		(Stated in millions)

		Pension Benefits						Postretirement
		US			International			Medical Plan
	2014	$	147		$	204		$	46
	2015		153			217			49
	2016		160			236			53
	2017		168			251			57
	2018		177			275			61
	2019 - 2023		1,038			1,562			376

Defined Benefit Plan, Amounts that will be Amortized from Accumulated Other Comprehensive Income (Loss) In Next Fiscal Year	'
	Included in Accumulated other comprehensive loss at December 31, 2013 are non-cash pretax charges which have not yet been recognized in net periodic benefit cost. The estimated portion of each component of Accumulated other comprehensive loss which is expected to be recognized as a component of net periodic benefit cost during the year ending December 31, 2014 is as follows:

		(Stated in millions)

		Pension			Postretirement
		Plans			Medical Plan
	Net actuarial losses	$	153		$	2
	Prior service cost (credit)	$	133		$	(4	)

Supplementary_Information_Tabl

Supplementary Information (Tables)	12 Months Ended
Supplementary Information (Tables)	Dec. 31, 2013
Cash Paid for Interest and Income Taxes	'
	Cash paid for interest and income taxes was as follows:
		(Stated in millions)

		2013			2012			2011
	Interest	$	369		$	313		$	294
	Income taxes	$	1,729		$	1,736		$	1,836

Interest and Other Income, Net	'
	Interest and other income includes the following:
		(Stated in millions)

		2013			2012			2011
	Interest income	$	33		$	30		$	40
	Equity in net earnings of affiliated companies		132			142			90
		$	165		$	172		$	130

Allowance for Doubtful Accounts	'
	Allowance for doubtful accounts is as follows:
		(Stated in millions)

		2013			2012			2011
	Balance at beginning of year	$	202		$	177		$	185
	Provision		205			37			37
	Amounts written off		(23	)		(10	)		(45	)
	Divestiture of business		—			(2	)		—
	Balance at end of year	$	384		$	202		$	177

Accounts Payable and Accrued Liabilities	'
	Accounts payable and accrued liabilities are summarized as follows:
		(Stated in millions)

		2013			2012
	Payroll, vacation and employee benefits	$	1,910		$	1,825
	Trade		4,155			3,550
	Other		2,772			3,078
		$	8,837		$	8,453

Discontinued_Operations_Tables

Discontinued Operations (Tables)	12 Months Ended
Discontinued Operations (Tables)	Dec. 31, 2013
Discontinued Operations	'
	The following table summarizes the results of these discontinued operations:

		(Stated in millions)

		2013			2012			2011
	Revenue	$	102		$	1,399		$	2,961
	Income (loss) before taxes	$	(63	)	$	274		$	320
	Tax expense		(6	)		(37	)		(53	)
	Net income attributable to noncontrolling interests		—			(5	)		(6	)
	Gain on divestitures, net of tax		—			28			220
	Income (loss) from discontinued operations	$	(69	)	$	260		$	481

Summary_of_Accounting_Policies3

Summary of Accounting Policies - Reconciliation of Earnings Per Share (Detail) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Line Items]	'	'	'
Income from continuing operations	$6,801	$5,230	$4,516
Schlumberger Income from Continuing Operations, Diluted	$6,801	$5,230	$4,516
Basic	1,323	1,330	1,349
Weighted Average Shares Outstanding, Assumed exercise of stock options	6	5	10
Weighted Average Shares Outstanding, Unvested restricted stock	4	4	2
Weighted Average Shares Outstanding, Diluted	1,333	1,339	1,361
Income from continuing operations	$5.14	$3.93	$3.35
Income from continuing operations	$5.10	$3.91	$3.32

Summary_of_Accounting_Policies4

Summary of Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Organization And Summary Of Significant Accounting Policies [Line Items]	'	'	'
Transaction Losses of Hedging Activities	$24	$37	$25
Trading Investments	194	194	'
Fixed Income Investments, held to maturity	363	245	'
Fixed Income Investments, held to maturity, 2015	51	'	'
Fixed Income Investments, held to maturity, 2016	23	'	'
Fixed Income Investments, held to maturity, 2017	51	'	'
Fixed Income Investments, held to maturity, 2018	238	'	'
Carrying value of marketable securities	81	81	'
Fair value of marketable securities	$257	$222	'
Employee stock options to purchase	12	21	14
Customer Relationships	'	'	'
Organization And Summary Of Significant Accounting Policies [Line Items]	'	'	'
Useful life of intangible asset minimum	'15 years	'	'
Useful life of intangible asset maximum	'28 years	'	'
Technology/Technical Know-How	'	'	'
Organization And Summary Of Significant Accounting Policies [Line Items]	'	'	'
Useful life of intangible asset minimum	'10 years	'	'
Useful life of intangible asset maximum	'18 years	'	'
Tradenames	'	'	'
Organization And Summary Of Significant Accounting Policies [Line Items]	'	'	'
Useful life of intangible asset minimum	'15 years	'	'
Useful life of intangible asset maximum	'30 years	'	'

Charges_and_Credits_Summary_of

Charges and Credits - Summary of Charges (Detail) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Investment In Joint Venture [Line Items]	'	'	'	'
Charges, Pretax	$152	($420)	$161	$223
Charges, Tax	'	49	22	28
Charges, Net	122	-469	139	195
Provision for Accounts Receivable	'	'	'	'
Investment In Joint Venture [Line Items]	'	'	'	'
Charges, Pretax	'	152	'	'
Charges, Tax	'	30	'	'
Charges, Net	'	122	'	'
Gain on formation of OneSubsea joint venture \| Gain on formation of OneSubsea	'	'	'	'
Investment In Joint Venture [Line Items]	'	'	'	'
Charges, Pretax	'	-1,028	'	'
Charges, Tax	'	'	'	'
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, Tax	'	'	'	'
Charges, Net	'	92	'	'
Merger-related integration costs \| Merger & integration	'	'	'	'
Investment In Joint Venture [Line Items]	'	'	'	'
Charges, Pretax	'	'	128	113
Charges, Tax	'	'	16	18
Charges, Net	'	'	112	95
Workforce reduction \| Restructuring & other	'	'	'	'
Investment In Joint Venture [Line Items]	'	'	'	'
Charges, Pretax	'	'	33	'
Charges, Tax	'	'	6	'
Charges, Net	'	'	27	'
General & administrative \| Donation to the Schlumberger Foundation	'	'	'	'
Investment In Joint Venture [Line Items]	'	'	'	'
Charges, Pretax	'	'	'	50
Charges, Tax	'	'	'	10
Charges, Net	'	'	'	40
Cost of revenue \| Write-off of Assets in Libya	'	'	'	'
Investment In Joint Venture [Line Items]	'	'	'	'
Charges, Pretax	'	'	'	60
Charges, Tax	'	'	'	'
Charges, Net	'	'	'	$60

Charges_and_Credits_Additional

Charges and Credits - Additional Information (Detail) (USD $)

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Mar. 31, 2013

Dec. 31, 2012

Mar. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2011

Jun. 30, 2011

Jun. 30, 2013

Venezuela Bolivar Official Currency Exchange Rate To Dollar

Other Restructuring

Merger-related integration costs

Severance and other

Write-off of Assets in Libya

Grant made by Schlumberger to Schlumberger Foundation

Drilling Related Technology

Contract Drilling

Restructuring Cost And Reserve [Line Items]

Pre tax and after tax gain from deconsolidation of business

$1,028

Impairment charge, Pretax

128

113

222

142

Impairment charge, Net

112

203

142

Exchange rate

0.063

0.043

Currency loss before tax

Currency loss after tax

Pretax provision relating to accounts receivable

152

-420

161

223

After tax provision relating to accounts receivable

$122

($469)

$139

$195

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (USD $)	6 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Business Acquisition [Line Items]	'	'	'	'
Purchase price	$600	$600	'	'
Gain on formation of OneSubsea	'	1,028	'	'
Acquisitions and investments, net of cash acquired	'	610	845	610
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 $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Inventory [Line Items]	'	'
Raw materials & field materials	$2,539	$2,519
Work in process	261	349
Finished goods	1,803	1,917
Inventories	$4,603	$4,785

Fixed_Assets_Property_Plant_an

Fixed Assets - Property, Plant and Equipment (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property Plant And Equipment [Line Items]	'	'	'
Land	$394	$366	'
Buildings & improvements	3,534	3,209	'
Machinery & equipment	29,332	27,690	'
Seismic vessels	1,904	1,903	'
Property, plant and equipment	35,164	33,168	'
Less accumulated depreciation	-20,068	-18,388	'
Fixed assets less accumulated depreciation	$15,096	$14,780	$12,993

Fixed_Assets_Depreciation_Expe

Fixed Assets - Depreciation Expense Relating to Fixed Assets -Additional Information (Detail) (USD $)	12 Months Ended
In Billions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property Plant And Equipment [Line Items]	'	'	'
Depreciation expense relating to fixed assets	$3.10	$2.90	$2.70
Buildings & improvements \| Minimum	'	'	'
Property Plant And Equipment [Line Items]	'	'	'
Useful Life	'25 years	'	'
Buildings & improvements \| Maximum	'	'	'
Property Plant And Equipment [Line Items]	'	'	'
Useful Life	'30 years	'	'
Machinery & equipment \| Minimum	'	'	'
Property Plant And Equipment [Line Items]	'	'	'
Useful Life	'5 years	'	'
Machinery & equipment \| Maximum	'	'	'
Property Plant And Equipment [Line Items]	'	'	'
Useful Life	'10 years	'	'
Seismic vessels \| Minimum	'	'	'
Property Plant And Equipment [Line Items]	'	'	'
Useful Life	'20 years	'	'
Seismic vessels \| Maximum	'	'	'
Property Plant And Equipment [Line Items]	'	'	'
Useful Life	'30 years	'	'

Multiclient_Seismic_Data_Multi

Multiclient Seismic Data - Multiclient Seismic Data Table (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]	'	'
Opening Balance	$518	$425
Capitalized in year	394	351
Charged to expense	-245	-258
Ending Balance	$667	$518

Goodwill_Changes_in_Carrying_A

Goodwill - Changes in Carrying Amount of Goodwill (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Line Items]	'	'
Goodwill, Beginning Balance	$14,585	$14,154
Acquisitions	343	484
Reallocation	'	'
Divestiture of business	-150	-76
Other	-72	23
Goodwill, Ending Balance	14,706	14,585
Reservoir Characterization	'	'
Goodwill [Line Items]	'	'
Goodwill, Beginning Balance	3,760	3,360
Acquisitions	4	391
Reallocation	'	'
Divestiture of business	'	'
Other	-27	9
Goodwill, Ending Balance	3,737	3,760
Drilling	'	'
Goodwill [Line Items]	'	'
Goodwill, Beginning Balance	8,337	8,362
Acquisitions	3	93
Reallocation	'	-125
Divestiture of business	'	'
Other	-25	7
Goodwill, Ending Balance	8,315	8,337
Production	'	'
Goodwill [Line Items]	'	'
Goodwill, Beginning Balance	2,488	2,356
Acquisitions	336	'
Reallocation	'	125
Divestiture of business	-150	'
Other	-20	7
Goodwill, Ending Balance	2,654	2,488
Distribution	'	'
Goodwill [Line Items]	'	'
Goodwill, Beginning Balance	'	76
Acquisitions	'	'
Reallocation	'	'
Divestiture of business	'	-76
Other	'	'
Goodwill, Ending Balance	'	'

Intangible_Assets_Schedule_of_

Intangible Assets - Schedule of Intangible Assets by Major Class (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Intangible Assets By Major Class [Line Items]	'	'
Gross Book Value	$6,305	$6,098
Accumulated Amortization	1,596	1,296
Net Book Value	4,709	4,802
Technology/Technical Know-How	'	'
Intangible Assets By Major Class [Line Items]	'	'
Gross Book Value	1,960	1,967
Accumulated Amortization	597	474
Net Book Value	1,363	1,493
Tradenames	'	'
Intangible Assets By Major Class [Line Items]	'	'
Gross Book Value	1,647	1,647
Accumulated Amortization	257	188
Net Book Value	1,390	1,459
Customer Relationships	'	'
Intangible Assets By Major Class [Line Items]	'	'
Gross Book Value	2,263	2,115
Accumulated Amortization	407	312
Net Book Value	1,856	1,803
Other	'	'
Intangible Assets By Major Class [Line Items]	'	'
Gross Book Value	435	369
Accumulated Amortization	335	322
Net Book Value	$100	$47

Intangible_Assets_Additional_I

Intangible Assets - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill and Intangible Assets Disclosure [Abstract]	'	'	'
Amortization expense	$330	$331	$324
Weighted average amortization period for all intangible assets (years)	'20 years	'	'
Estimated amortization charged to income, 2014	357	'	'
Estimated amortization charged to income, 2015	350	'	'
Estimated amortization charged to income, 2016	334	'	'
Estimated amortization charged to income, 2017	314	'	'
Estimated amortization charged to income, 2018	$307	'	'

Longterm_Debt_and_Debt_Facilit2

Long-term Debt and Debt Facility Agreements - Long-term Debt (Detail)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Mar. 31, 2009

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

In Millions, unless otherwise specified

USD ($)

3.30% Senior Notes due 2021

Three Point Six Five Percent Senior Notes Due Two Thousand Twenty Three

4.50% Guaranteed Notes due 2014

2.75% Guaranteed Notes due 2015

1.95% Senior Notes due 2016

4.20% Senior Notes due 2021

1.25% Senior Notes due 2017

2.40% Senior Notes due 2022

Guaranteed Notes One Point Five Zero Percent Due Two Thousand Nineteen

2.65% Senior Notes due 2016

Floating Rate Senior Notes due 2014

Other variable rate debt

USD ($)

EUR (€)

USD ($)

EUR (€)

USD ($)

EUR (€)

USD ($)

Proforma Debt Instrument [Line Items]

Long-term debt, carrying amount

$10,393

$9,509

$1,596

$1,595

$1,495

$1,324

€ 1,000

$1,373

$1,318

€ 1,000

$1,099

$999

$998

$697

€ 500

$500

$300

$536

$277

Longterm_Debt_and_Debt_Facilit3

Long-term Debt and Debt Facility Agreements - Long-term Debt (Parenthetical) (Detail)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Mar. 31, 2009

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

USD ($)

3.30% Senior Notes due 2021

4.50% Guaranteed Notes due 2014

2.75% Guaranteed Notes due 2015

1.95% Senior Notes due 2016

4.20% Senior Notes due 2021

1.25% Senior Notes due 2017

2.40% Senior Notes due 2022

2.65% Senior Notes due 2016

Floating Rate Senior Notes due 2014

Euro Medium Term Note Program

Guaranteed Notes One Point Five Zero Percent Due Two Thousand Nineteen

USD ($)

EUR (€)

USD ($)

EUR (€)

USD ($)

EUR (€)

USD ($)

EUR (€)

USD ($)

EUR (€)

Proforma Debt Instrument [Line Items]

Debt instrument interest rate

3.30%

0.03%

4.50%

0.05%

2.75%

0.03%

1.95%

0.02%

4.20%

0.04%

1.25%

0.01%

2.40%

0.02%

2.65%

0.03%

1.50%

Debt instrument maturity date

'2021

'2014

'2015

'2016

'2021

'2017

'2022

'2016

'2014

'2019

Guaranteed notes face amount

€ 5,000,000,000

€ 500,000,000

Long-term debt, carrying amount

$10,393,000,000

$9,509,000,000

$1,596,000,000

$1,595,000,000

€ 1,000,000,000

$1,324,000,000

€ 1,000,000,000

$1,373,000,000

$1,318,000,000

$1,099,000,000

$999,000,000

$998,000,000

$500,000,000

$300,000,000

$697,000,000

€ 500,000,000

$697,000,000

€ 500,000,000

Effective interest rate on euro denominated debt

4.95%

2.56%

2.39%

Senior note floating interest rate

'Three-month LIBOR plus 55 basis points

'three-month LIBOR plus approximately 64 basis points.

Basis points

5.50%

6.40%

Longterm_Debt_and_Debt_Facilit4

Long-term Debt and Debt Facility Agreements - Additional Information (Detail) (USD $)	12 Months Ended
In Billions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Proforma Debt Instrument [Line Items]	'	'
Investment in subsidiary-Schlumberger Investment SA	100.00%	'
Committed debt facility agreement aggregated	$4	'
Unused debt facility	3.7	'
Weighted average interest rate on variable rate debt	2.80%	'
Long-term Debt maturity in 2014	1.4	'
Long-term Debt maturity in 2015	1.6	'
Long-term Debt maturity in 2016	1	'
Long-term Debt maturity in 2017	0.5	'
Long-term Debt maturity in 2021	0.7	'
Long-term Debt maturity in 2022	1.5	'
Long-term debt, fair value	10.4	9.9
Commercial Paper	'	'
Proforma Debt Instrument [Line Items]	'	'
Committed debt facility agreement aggregated	3.5	'
Commercial paper programs mature in December 2013	'	'
Proforma Debt Instrument [Line Items]	'	'
Committed debt facility agreement aggregated	250	'
Commercial paper programs mature in July 2016	'	'
Proforma Debt Instrument [Line Items]	'	'
Committed debt facility agreement aggregated	$1.50	'

Derivative_Instruments_and_Hed2

Derivative Instruments and Hedging Activities - Fair Values of Outstanding Derivative Instruments (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative Assets	'	'	'
Derivative Assets	$163	$66	'
Derivative designated as hedges	'	'	'
Derivative Assets	'	'	'
Derivative Assets	149	50	'
Derivative Liabilities	'	'	'
Derivative Liabilities	15	99	'
Derivative not designated as hedges	'	'	'
Derivative Assets	'	'	'
Derivative Assets	14	16	'
Derivative Liabilities	'	'	'
Derivative Liabilities	17	102	'
Foreign exchange contracts	'	'	'
Derivative Assets	'	'	'
Derivative Assets	50	36	-8
Foreign exchange contracts \| Derivative designated as hedges \| Other current assets	'	'	'
Derivative Assets	'	'	'
Derivative Assets	98	26	'
Foreign exchange contracts \| Derivative designated as hedges \| Other Assets	'	'	'
Derivative Assets	'	'	'
Derivative Assets	24	22	'
Foreign exchange contracts \| Derivative designated as hedges \| Accounts payable and accrued liabilities	'	'	'
Derivative Liabilities	'	'	'
Derivative Liabilities	14	80	'
Foreign exchange contracts \| Derivative designated as hedges \| Other Liabilities	'	'	'
Derivative Liabilities	'	'	'
Derivative Liabilities	1	19	'
Foreign exchange contracts \| Derivative not designated as hedges \| Other current assets	'	'	'
Derivative Assets	'	'	'
Derivative Assets	10	10	'
Foreign exchange contracts \| Derivative not designated as hedges \| Other Assets	'	'	'
Derivative Assets	'	'	'
Derivative Assets	4	6	'
Foreign exchange contracts \| Derivative not designated as hedges \| Accounts payable and accrued liabilities	'	'	'
Derivative Liabilities	'	'	'
Derivative Liabilities	2	3	'
Interest rate swaps \| Other current assets	'	'	'
Derivative Assets	'	'	'
Derivative Assets	'	2	'
Interest rate swaps \| Derivative designated as hedges \| Other Assets	'	'	'
Derivative Assets	'	'	'
Derivative Assets	$27	'	'

Derivative_Instruments_and_Hed3

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 $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Fair Value Hedging \| Interest rate swaps \| Interest expense	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'
Gain (Loss) Recognized in Income	$15	$1	$9
Derivative not designated as hedges	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'
Gain (Loss) Recognized in Income	-2	6	-22
Derivative not designated as hedges \| Foreign exchange contracts \| Cost of revenue	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'
Gain (Loss) Recognized in Income	-2	5	-17
Derivative not designated as hedges \| Commodity contracts \| Cost of revenue	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'
Gain (Loss) Recognized in Income	'	$1	($5)

Derivative_Instruments_and_Hed4

Derivative Instruments and Hedging Activities - Effect of Derivative Instruments in Cash Flow Hedging Relationships on Income and Accumulated Other Comprehensive Loss (AOCL) (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments Gain Loss [Line Items]	'	'	'
Gain (Loss) Reclassified from Accumulated OCL into Income	$163	$66	'
Foreign exchange contracts	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'
Gain (Loss) Reclassified from Accumulated OCL into Income	50	36	-8
Gain (Loss) Recognized in OCL	49	92	-79
Foreign exchange contracts \| Cost of revenue	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'
Gain (Loss) Reclassified from Accumulated OCL into Income	58	49	-25
Foreign exchange contracts \| Research & engineering	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'
Gain (Loss) Reclassified from Accumulated OCL into Income	($8)	($13)	$17

Derivative_Instruments_and_Hed5

Derivative Instruments and Hedging Activities - Additional Information (Detail)	12 Months Ended		12 Months Ended				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013
	USD ($)	USD ($)	Guaranteed Notes One Point Five Zero Percent Due Two Thousand Nineteen	Foreign exchange contracts	Foreign exchange contracts	Fixed rate debt	Floating rate debt
	Country		EUR (€)	USD ($)	Debt	Guaranteed Notes One Point Five Zero Percent Due Two Thousand Nineteen	Guaranteed Notes One Point Five Zero Percent Due Two Thousand Nineteen
					Derivatives designated as hedges
					USD ($)
Derivative [Line Items]	'	'	'	'	'	'	'
Number of countries in which Schlumberger conducts business	85	'	'	'	'	'	'
Percentage Of Revenue Denominated In Domestic Currency	78.00%	'	'	'	'	'	'
Recognized a cumulative net gain in Accumulated other comprehensive loss relating to revaluation of foreign currency forward contracts and foreign currency options designated as cash flow hedges	'	$29,000,000	'	'	'	'	'
Contracts outstanding in various foreign currencies (US dollar equivalent)	'	'	500,000,000	7,600,000,000	3,800,000,000	'	'
Notional amount of interest rate swap	'	'	500,000,000	7,600,000,000	3,800,000,000	'	'
Guaranteed notes face amount	'	'	500,000,000	'	'	'	'
Derivative swap interest rate	'	'	'	'	'	1.50%	1.50%
Senior note floating interest rate	'	'	'three-month LIBOR plus approximately 64 basis points.	'	'	'	'three-month LIBOR plus approximately 64 basis points
Basis points	'	'	6.40%	'	'	'	0.64%
Fixed rate debt aggregate, after taking into account the effects of the interest rate swaps	10,500,000,000	'	'	'	'	'	'
Variable rate debt aggregate, after taking into account the effects of the interest rate swaps	$2,700,000,000	'	'	'	'	'	'

Stockholders_Equity_Schedule_o

Stockholders' Equity - Schedule of Accumulated Other Comprehensive Loss (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'
Balance	($3,888)	($3,557)	($2,768)
Other comprehensive income (loss) before reclassifications	1,261	-707	-1,168
Amounts reclassified from accumulated other comprehensive loss	375	276	262
Income taxes	-302	100	117
Balance	-2,554	-3,888	-3,557
Currency Translation Adjustments	'	'	'
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'
Balance	-917	-993	-911
Other comprehensive income (loss) before reclassifications	-151	76	-82
Balance	-1,068	-917	-993
Fair Value of Derivatives	'	'	'
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'
Balance	30	-26	45
Other comprehensive income (loss) before reclassifications	49	92	-79
Amounts reclassified from accumulated other comprehensive loss	-50	-36	8
Balance	29	30	-26
Pension and Other Postretirement Benefit Plans	'	'	'
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'
Balance	-3,142	-2,538	-1,902
Other comprehensive income (loss) before reclassifications	1,328	-1,016	-1,007
Amounts reclassified from accumulated other comprehensive loss	425	312	254
Income taxes	-302	100	117
Balance	-1,691	-3,142	-2,538
Unrealized Gain on Marketable Securities	'	'	'
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'
Balance	141	'	'
Other comprehensive income (loss) before reclassifications	35	141	'
Balance	$176	$141	'

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Class Of Stock [Line Items]	'	'	'
Common stock, shares authorized	4,500,000,000	'	'
Common stock, par value	$0.01	'	'
Common stock, shares outstanding	1,307,330,369	1,328,255,773	'
Preferred stock, shares authorized	200,000,000	'	'
Preferred stock, par value	$0.01	'	'
Preferred stock, issued	0	'	'
Other comprehensive income (loss)	$1,334	($331)	($789)

Stockbased_Compensation_Plans_1

Stock-based Compensation Plans - Weighted-Average Assumptions (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule Of Weighted Average Assumptions For Fair Values Of Stock Options [Line Items]	'	'	'
Dividend yield	1.70%	1.50%	1.20%
Expected volatility	38.00%	39.00%	37.00%
Risk free interest rate	1.20%	1.50%	2.80%
Expected option life in years	'7 years	'6 years 10 months 24 days	'6 years 10 months 24 days
Weighted-average fair value per share	$23.93	$25.26	$31.38

Stockbased_Compensation_Plans_2

Stock-based Compensation Plans - Options Outstanding and Option Exercisable (Detail) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]	'
Options Outstanding	41,939
Weighted-average remaining contractual life (in years)	'6 years 4 months 24 days
Weighted- average exercise price	$70.33
Options Exercisable	20,091
Weighted-average exercise price	$67.58
Exercise prices range $23.75 - $56.61	'
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]	'
Exercise prices minimum range	$23.75
Exercise prices maximum range	$56.61
Options Outstanding	7,244
Weighted-average remaining contractual life (in years)	'3 years 9 months 18 days
Weighted- average exercise price	$45.23
Options Exercisable	6,257
Weighted-average exercise price	$45.84
Exercise prices range $58.45 - $68.83	'
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]	'
Exercise prices minimum range	$58.45
Exercise prices maximum range	$68.33
Options Outstanding	8,458
Weighted-average remaining contractual life (in years)	'5 years 6 months
Weighted- average exercise price	$65.82
Options Exercisable	5,125
Weighted-average exercise price	$64.70
Exercise prices range $70.31 - $78.35	'
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]	'
Exercise prices minimum range	$70.31
Exercise prices maximum range	$78.35
Options Outstanding	13,765
Weighted-average remaining contractual life (in years)	'8 years 7 months 6 days
Weighted- average exercise price	$71.94
Options Exercisable	1,289
Weighted-average exercise price	$72.25
Exercise prices range $83.88 - $84.93	'
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]	'
Exercise prices minimum range	$83.88
Exercise prices maximum range	$84.93
Options Outstanding	10,005
Weighted-average remaining contractual life (in years)	'6 years 1 month 6 days
Weighted- average exercise price	$84.21
Options Exercisable	5,762
Weighted-average exercise price	$84.45
Exercise prices range $89.99 - $110.77	'
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]	'
Exercise prices minimum range	$89.99
Exercise prices maximum range	$110.77
Options Outstanding	2,467
Weighted-average remaining contractual life (in years)	'5 years 9 months 18 days
Weighted- average exercise price	$94.31
Options Exercisable	1,658
Weighted-average exercise price	$96.29

Stockbased_Compensation_Plans_3

Stock-based Compensation Plans - Summary of Stock Option Activity (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule Of Stock Option Activity [Line Items]	'	'	'
Beginning balance, shares	42,059,000	40,027,000	37,499,000
Granted, shares	6,570,000	8,664,000	9,528,000
Exercised, shares	-5,168,000	-4,171,000	-5,470,000
Forfeited, shares	-1,522,000	-2,461,000	-1,530,000
Ending balance, shares	41,939,000	42,059,000	40,027,000
Beginning balance, Weighted-average exercise price	$67.77	$63.84	$55.33
Granted, Weighted-average exercise price	$72.16	$72.04	$84.29
Exercised, Weighted-average exercise price	$51.73	$39.07	$42.36
Forfeited, Weighted-average exercise price	$70.57	$67.50	$58.82
Ending balance, Weighted-average exercise price	$70.33	$67.77	$63.84

Stockbased_Compensation_Plans_4

Stock-based Compensation Plans - Restricted Stock Transactions (Detail) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'
Unvested at beginning of year, Restricted Stock	3,566	2,433	2,223
Granted, Restricted Stock	1,949	1,668	1,136
Vested, Restricted Stock	-958	-351	-767
Forfeited, Restricted Stock	-386	-184	-159
Unvested at end of year, Restricted Stock	4,171	3,566	2,433
Restricted stock	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'
Unvested at beginning of year, Weighted Average Grant Date Fair Value	73.62	72.25	64.27
Granted, Weighted Average Grant Date Fair Value	75.65	71.09	84.61
Vested, Weighted Average Grant Date Fair Value	66.98	52.26	67.36
Forfeited, Weighted Average Grant Date Fair Value	74.53	73.38	72.51
Unvested at end of year, Weighted Average Grant Date Fair Value	76.01	73.62	72.25

Stockbased_Compensation_Plans_5

Stock-based Compensation Plans - Discounted Stock Purchase Plan Assumptions and Resulting Weighted Average Fair Value (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'
Dividend yield	1.70%	1.50%	1.20%
Expected volatility	38.00%	39.00%	37.00%
Risk free interest rate	1.20%	1.50%	2.80%
Weighted average fair value per share	$23.93	$25.26	$31.38
DSPP	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'
Dividend yield	1.70%	1.60%	1.20%
Expected volatility	24.00%	41.00%	28.00%
Risk free interest rate	0.10%	0.20%	0.20%
Weighted average fair value per share	$9.91	$12.71	$12.83

Stockbased_Compensation_Plans_6

Stock-based Compensation Plans - Stock-Based Compensation Expense Recognized in Income (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'
Stock-based compensation expense	$315	$335	$272
Employee Stock Option	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'
Stock-based compensation expense	165	203	176
Restricted stock	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'
Stock-based compensation expense	110	82	60
DSPP	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'
Stock-based compensation expense	$40	$50	$36

Stockbased_Compensation_Plans_7

Stock-based Compensation Plans - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'
Aggregate intrinsic value of stock options outstanding	$840	'	'
Aggregate intrinsic value of stock options exercisable	463	'	'
Total intrinsic value of options exercised	176	142	246
Total unrecognized compensation cost related to nonvested stock-based compensation arrangements	502	'	'
Expected to be recognized in 2014	232	'	'
Expected to be recognized in 2015	161	'	'
Expected to be recognized in 2016	75	'	'
Expected to be recognized in 2017	28	'	'
Expected to be recognized in 2018	$6	'	'
Employee Stock Option	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'
Weighted average remaining contractual life of stock options exercisable, in years	'5 years 1 month 6 days	'	'
Stock option maximum term	'10 years	'	'
Stock options vesting period	'Four or Five Years	'	'
Restricted stock	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'
Restricted stock awards, vesting period	'3 years	'	'
DSPP	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'
Percentage purchase price of stock lower of stock price at beginning or end of plan period at specified intervals	92.50%	'	'

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	Dec. 31, 2013	Jurisdictions	Dec. 31, 2012	Dec. 31, 2011
Income Tax Examination [Line Items]	'	'	'	'
Minimum number of jurisdictions to Schlumberger operates	'	100	'	'
US statutory federal rate	'	35.00%	35.00%	35.00%
Pretax provision relating to accounts receivable	$152	($420)	$161	$223
Deferred tax assets, valuation allowances relating to net operating losses in certain countries	238	238	256	'
Accrued interest and penalties	253	253	250	225
Recognized interest and penalties	'	30	21	15
Domestic Country	'	'	'	'
Income Tax Examination [Line Items]	'	'	'	'
Pretax provision relating to accounts receivable	'	53	52	104
Foreign Country	'	'	'	'
Income Tax Examination [Line Items]	'	'	'	'
Pretax provision relating to accounts receivable	'	($473)	$109	$119
Minimum	'	'	'	'
Income Tax Examination [Line Items]	'	'	'	'
US statutory federal rate	'	0.00%	'	'
Maximum	'	'	'	'
Income Tax Examination [Line Items]	'	'	'	'
US statutory federal rate	'	40.00%	'	'

Income_Taxes_Income_Tax_Disclo

Income Taxes - Income Tax Disclosure Table (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure Income Tax Income Tax Disclosure Table Detail [Line Items]	'	'	'
United States	$1,904	$1,980	$2,246
Outside United States	6,787	4,979	3,772
Income (loss) from continuing operations before income taxes and minority interest, Total	$8,691	$6,959	$6,018

Income_Taxes_Components_of_Net

Income Taxes - Components of Net Deferred Tax Assets (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Disclosure Income Tax Components Of Net Deferred Tax Assets Detail [Line Items]	'	'
Postretirement benefits	$236	$543
Intangible assets	-1,502	-1,490
Investments in non-US subsidiaries	-282	-317
Other, net	128	114
Net deferred tax assets	($1,420)	($1,150)

Income_Taxes_Components_of_Con

Income Taxes - Components of Consolidated Income Taxes (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current:	'	'	'
United States - Federal	$682	$698	$809
United States - State	60	53	42
Outside United States	1,211	1,025	667
Current Income Tax Expense (Benefit), Total	1,953	1,776	1,518
Deferred:	'	'	'
United States - Federal	-109	-105	-73
United States - State	-4	-7	-7
Outside United States	34	22	75
Valuation allowance	-26	14	-21
Deferred income taxes	-105	-76	-26
Consolidated taxes on income	$1,848	$1,700	$1,492

Income_Taxes_Reconciliation_of

Income Taxes - Reconciliation of US Statutory Federal Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure Income Tax Reconciliation Of U S Statutory Federal Tax Rate Detail [Line Items]	'	'	'
US statutory federal rate	35.00%	35.00%	35.00%
Non-US income taxed at different rates	-12.00%	-10.00%	-9.00%
Charges and credits (See Note 3)	-2.00%	'	'
Other	'	-1.00%	-1.00%
Effective income tax rate	21.00%	24.00%	25.00%

Income_Taxes_Reconciliation_of1

Income Taxes - Reconciliation of Liabilities Associated with Uncertain Tax Provisions (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure Income Tax Reconciliation Of U S Statutory Federal Tax Rate Detail [Line Items]	'	'	'
Balance at beginning of year	$1,453	$1,353	$1,338
Additions based on tax positions related to the current year	146	156	153
Additions for tax positions of prior years	109	98	49
Additions related to acquisitions	'	'	48
Impact of changes in exchange rates	-47	12	-18
Settlements with tax authorities	-64	-17	-77
Reductions for tax positions of prior years	-109	-103	-102
Reductions due to the lapse of the applicable statute of limitations	-36	-46	-38
Balance at end of year	$1,452	$1,453	$1,353

Income_Taxes_Tax_Years_Subject

Income Taxes - Tax Years Subject to Examination by Tax Authorities (Detail)	12 Months Ended
	Dec. 31, 2013
Brazil	'
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]	'
Income tax examination, year(s) under examination	'2008 - 2013
Canada	'
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]	'
Income tax examination, year(s) under examination	'2006 - 2013
Mexico	'
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]	'
Income tax examination, year(s) under examination	'2007 - 2013
Norway	'
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]	'
Income tax examination, year(s) under examination	'2013
Russia	'
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]	'
Income tax examination, year(s) under examination	'2010 - 2013
Domicile Saudi Arabia	'
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]	'
Income tax examination, year(s) under examination	'2001 - 2013
United Kingdom	'
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]	'
Income tax examination, year(s) under examination	'2009 - 2013
United States	'
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]	'
Income tax examination, year(s) under examination	'2008 - 2013

Leases_and_Lease_Commitments_F

Leases and Lease Commitments - Future Minimum Rental Commitments Under Noncancelable Operating Leases (Detail) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified	Dec. 31, 2013
Commitments And Contingencies [Line Items]	'
2014	$318
2015	246
2016	195
2017	165
2018	136
Thereafter	558
Total	$1,618

Leases_and_Lease_Commitments_A

Leases and Lease Commitments - Additional Information (Detail) (USD $)	12 Months Ended
In Billions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Commitments [Line Items]	'	'	'
Total rental expense	$1.90	$1.90	$1.60

Segment_Information_Schedule_o

Segment Information - Schedule of Segment Reporting Information, by Segment (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]	'		'		'
Revenue	$45,266		$41,731		$36,579
Income before taxes	8,691		6,959		'
Assets	67,100		61,547		'
Depreciation and amortization	3,666	[1]	3,500	[1]	3,274	[1]
Capital Expenditures	3,943		4,694		4,004
Operating Segments	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Revenue	45,266		41,731		36,579
Income before taxes	9,344		8,117		'
Assets	31,863		31,191		'
Depreciation and amortization	3,458		3,302		'
Capital Expenditures	3,943		4,694		'
Operating Segments \| Reservoir Characterization	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Revenue	12,246		11,159		9,740
Income before taxes	3,647		3,069		'
Assets	8,807		8,558		'
Depreciation and amortization	1,332		1,311		'
Capital Expenditures	1,275		1,235		'
Operating Segments \| Drilling	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Revenue	17,317		15,892	[2]	13,775
Income before taxes	3,309		2,789	[2]	'
Assets	11,069		10,989	[2]	'
Depreciation and amortization	1,088		1,086	[2]	'
Capital Expenditures	1,291		1,668	[2]	'
Operating Segments \| Production	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Revenue	15,927		14,802	[2]	13,030
Income before taxes	2,619		2,327	[2]	'
Assets	10,033		9,579	[2]	'
Depreciation and amortization	821		724	[2]	'
Capital Expenditures	1,204		1,439	[2]	'
Eliminations & other	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Revenue	-224		-122	[3]	34
Income before taxes	-231		-68	[3]	'
Assets	1,954		2,065	[3]	'
Depreciation and amortization	217		181	[3]	'
Capital Expenditures	173		352	[3]	'
Goodwill and intangible assets	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Assets	19,415		19,387	[4]	'
Other Assets	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Assets	3,772		2,702		'
Corporate	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Income before taxes	-726	[2]	-696	[5]	'
Assets	12,050	[2]	8,021	[5]	'
Depreciation and amortization	208	[2]	198	[5]	'
Interest income	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Income before taxes	22	[3]	30		'
Interest expense	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Income before taxes	-369	[4]	-331		'
Charges & credits	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Income before taxes	420	[5]	-161		'
Discontinued Operations	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Assets	'		$246		'

[1]	Includes multiclient seismic data costs.
[2]	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 and other nonoperating items. Corporate assets consist of cash, short-term investments, fixed income investments, held to maturity and investments in affiliates.
[3]	Interest income excludes amounts which are included in the segmentsâ€™ income (2013: $11 million; 2012: $- million; 2011: $3 million).
[4]	Interest expense excludes amounts which are included in the segmentsâ€™ income (2013: $23 million; 2012: $8 million; 2011: $8 million).
[5]	See Note 3 â€“ Charges and Credits.

Segment_Information_Revenue_by

Segment Information - Revenue by Geographic Area (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'
Revenue	$45,266	$41,731	$36,579
Operating Segments	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Revenue	45,266	41,731	36,579
Operating Segments \| North America	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Revenue	13,897	13,535	12,378
Operating Segments \| Latin America	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Revenue	7,751	7,554	6,467
Operating Segments \| Europe/CIS/Africa	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Revenue	12,366	11,444	9,676
Operating Segments \| Middle East & Asia	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Revenue	10,810	8,775	7,722
Eliminations & other	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Revenue	$442	$423	$336

Segment_Information_Fixed_Asse

Segment Information - Fixed Assets Less Accumulated Depreciation by Geographic Area (Detail) (USD $)	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]	'		'		'
Fixed Assets less accumulated depreciation	$15,096		$14,780		$12,993
Operating Segments \| North America	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Fixed Assets	4,858		4,868		4,230
Operating Segments \| Latin America	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Fixed Assets	1,889		1,788		1,472
Operating Segments \| Europe	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Fixed Assets	3,452		3,414		3,341
Operating Segments \| Middle East & Asia	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Fixed Assets	2,991		2,908		2,233
Operating Segments \| Unallocated	'		'		'
Segment Reporting Information [Line Items]	'		'		'
Fixed Assets	$1,906	[1]	$1,802	[1]	$1,717	[1]

[1]	Represents seismic vessels, including the related on-board equipment, which frequently transition between geographic areas.

Segment_Information_Schedule_o1

Segment Information - Schedule of Segment Reporting Information, by Segment (Parenthetical) (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'
Interest expense included in the segment results	$391	$340	$298
Interest Income Excluded From Segment Information	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Interest income included in the segment results	11	'	3
Interest Expense Excluded From Segment Information	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Interest expense included in the segment results	$23	$8	$8

Segment_Information_Additional

Segment Information - Additional Information (Detail) (USD $)	12 Months Ended
In Billions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Information [Line Items]	'	'	'
Maximum percentage of consolidated revenue customers	10.00%	10.00%	10.00%
Revenue in the United States	$12	$11.80	$10.70

Pension_and_Other_Benefit_Plan2

Pension and Other Benefit Plans - Weighted-Average Assumed Discount Rate, Compensation Increases and Expected Long-Term Rate of Return on Plan Assets Used to Determine Net Pension Cost for US and International Plans (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Discount rate	4.25%	4.25%	'
Return on plan assets	0.00%	'	'
US Plan Assets	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Discount rate	4.25%	4.25%	'
US Plan Assets \| Pension Costs	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Discount rate	5.00%	5.00%	5.50%
Compensation increases	4.00%	4.00%	4.00%
Return on plan assets	7.50%	7.50%	7.50%
International	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Discount rate	4.38%	4.38%	'
International \| Pension Costs	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Discount rate	4.95%	4.95%	5.47%
Compensation increases	4.91%	4.91%	4.91%
Return on plan assets	7.50%	7.50%	7.50%

Pension_and_Other_Benefit_Plan3

Pension and Other Benefit Plans - Net Pension Cost for Schlumberger Pension Plans and US Postretirement Medical Plan (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
US Plan Assets	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Service cost - benefits earned during the period	$80	$68	$59
Interest cost on projected benefit obligation	150	152	150
Expected return on plan assets	-200	-185	-170
Amortization of net loss	122	95	89
Amortization of prior service cost	12	12	12
Total pension cost	164	142	140
International	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Service cost - benefits earned during the period	127	86	64
Interest cost on projected benefit obligation	253	241	226
Expected return on plan assets	-384	-328	-279
Amortization of net loss	155	76	31
Amortization of prior service cost	117	120	120
Total pension cost	268	195	162
Postretirement medical plan	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Service cost - benefits earned during the period	48	29	24
Interest cost on projected benefit obligation	56	58	57
Expected return on plan assets	-37	-30	-20
Amortization of net loss	23	16	13
Amortization of prior service cost	-4	-7	-11
Total pension cost	$86	$66	$63

Pension_and_Other_Benefit_Plan4

Pension and Other Benefit Plans - Weighted-Average Assumed Discount Rate and Compensation Increases Used to Determine Projected Benefit Obligations for US and International Plans (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'
Discount rate	4.25%	4.25%
US Plan Assets	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'
Discount rate	4.25%	4.25%
Compensation increases	4.00%	4.00%
International	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'
Discount rate	4.38%	4.38%
Compensation increases	4.83%	4.83%

Pension_and_Other_Benefit_Plan5

Pension and Other Benefit Plans - Changes in Projected Benefit Obligation, Plan Assets and Funded Status of Plans (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Amounts Recognized in Balance Sheet	'	'	'
Postretirement Benefits	($670)	($2,169)	'
US Plan Assets	'	'	'
Change in Projected Benefit Obligations	'	'	'
Projected benefit obligation at beginning of year	3,558	3,073	'
Service cost	80	68	59
Interest cost	150	152	150
Contributions by plan participants	'	'	'
Actuarial (gains) losses	-232	399	'
Currency effect	'	'	'
Benefits paid	-138	-134	'
Projected benefit obligation at end of year	3,418	3,558	3,073
Change in Plan Assets	'	'	'
Plan assets at fair value at beginning of year	2,910	2,655	'
Actual return on plan assets	356	336	'
Currency effect	'	'	'
Company contributions	141	53	'
Contributions by plan participants	'	'	'
Benefits paid	-138	-134	'
Plan assets at fair value at end of year	3,269	2,910	2,655
(Unfunded Liability) / Asset	-149	-648	'
Amounts Recognized in Balance Sheet	'	'	'
Postretirement Benefits	-149	-648	'
Total of post retirement benefits	-149	-648	'
Amounts Recognized in Accumulated Other Comprehensive Loss	'	'	'
Actuarial (gains) losses	687	1,197	'
Prior service cost	78	90	'
Total amount recognized in accumulated other comprehensive income	765	1,287	'
Accumulated benefit obligation	3,158	3,262	'
International	'	'	'
Change in Projected Benefit Obligations	'	'	'
Projected benefit obligation at beginning of year	5,798	4,666	'
Service cost	127	86	64
Interest cost	253	241	226
Contributions by plan participants	104	97	'
Actuarial (gains) losses	-168	786	'
Currency effect	30	62	'
Benefits paid	-163	-140	'
Projected benefit obligation at end of year	5,981	5,798	4,666
Change in Plan Assets	'	'	'
Plan assets at fair value at beginning of year	5,120	4,097	'
Actual return on plan assets	836	490	'
Currency effect	35	62	'
Company contributions	314	514	'
Contributions by plan participants	104	97	'
Benefits paid	-163	-140	'
Plan assets at fair value at end of year	6,246	5,120	4,097
(Unfunded Liability) / Asset	265	-678	'
Amounts Recognized in Balance Sheet	'	'	'
Postretirement Benefits	-5	-687	'
Other Assets	270	9	'
Total of post retirement benefits	265	-678	'
Amounts Recognized in Accumulated Other Comprehensive Loss	'	'	'
Actuarial (gains) losses	882	1,234	'
Prior service cost	418	598	'
Total amount recognized in accumulated other comprehensive income	1,300	1,832	'
Accumulated benefit obligation	$5,593	$5,401	'

Pension_and_Other_Benefit_Plan6

Pension and Other Benefit Plans - Weighted-Average Allocation of Plan Assets and Target Allocation by Asset Category (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
US Plan Assets	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'
Target Allocation Percentage of Assets, Total	100.00%	100.00%
Target allocation of assets	100.00%	100.00%
International	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'
Target Allocation Percentage of Assets, Total	100.00%	100.00%
Target allocation of assets	100.00%	100.00%
Equity securities \| US Plan Assets	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'
Target Allocation Percentage of Assets, Range Minimum	45.00%	'
Target Allocation Percentage of Assets, Range Maximum	55.00%	'
Target allocation of assets	50.00%	47.00%
Equity securities \| International	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'
Target Allocation Percentage of Assets, Range Minimum	50.00%	'
Target Allocation Percentage of Assets, Range Maximum	70.00%	'
Target allocation of assets	60.00%	56.00%
Debt securities \| US Plan Assets	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'
Target Allocation Percentage of Assets, Range Minimum	33.00%	'
Target Allocation Percentage of Assets, Range Maximum	45.00%	'
Target allocation of assets	40.00%	42.00%
Debt securities \| International	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'
Target Allocation Percentage of Assets, Range Minimum	25.00%	'
Target Allocation Percentage of Assets, Range Maximum	40.00%	'
Target allocation of assets	31.00%	35.00%
Cash and cash equivalents \| US Plan Assets	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'
Target Allocation Percentage of Assets, Range Minimum	0.00%	'
Target Allocation Percentage of Assets, Range Maximum	3.00%	'
Target allocation of assets	2.00%	2.00%
Cash and cash equivalents \| International	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'
Target Allocation Percentage of Assets, Range Minimum	0.00%	'
Target Allocation Percentage of Assets, Range Maximum	3.00%	'
Target allocation of assets	3.00%	3.00%
Alternative investments \| US Plan Assets	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'
Target Allocation Percentage of Assets, Range Minimum	0.00%	'
Target Allocation Percentage of Assets, Range Maximum	10.00%	'
Target allocation of assets	8.00%	9.00%
Alternative investments \| International	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'
Target Allocation Percentage of Assets, Range Minimum	0.00%	'
Target Allocation Percentage of Assets, Range Maximum	20.00%	'
Target allocation of assets	6.00%	6.00%

Pension_and_Other_Benefit_Plan7

Pension and Other Benefit Plans - Fair Value of Schlumberger's Pension Plan Assets (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
US Plan Assets	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	$3,269	$2,910	$2,655
US Plan Assets \| Cash and cash equivalents	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	77	56	'
US Plan Assets \| US	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	1,068	868	'
US Plan Assets \| International	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	572	513	'
US Plan Assets \| Corporate bonds	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	548	495	'
US Plan Assets \| Government and government-related debt securities	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	639	638	'
US Plan Assets \| Collateralized mortgage obligations and mortgage backed securities	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	99	99	'
US Plan Assets \| Private equity	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	204	185	'
US Plan Assets \| Real estate	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	62	56	'
US Plan Assets \| Level One	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	1,264	1,070	'
US Plan Assets \| Level One \| Cash and cash equivalents	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	24	5	'
US Plan Assets \| Level One \| US	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	625	502	'
US Plan Assets \| Level One \| International	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	454	406	'
US Plan Assets \| Level One \| Government and government-related debt securities	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	161	157	'
US Plan Assets \| Level Two	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	1,739	1,599	'
US Plan Assets \| Level Two \| Cash and cash equivalents	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	53	51	'
US Plan Assets \| Level Two \| US	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	443	366	'
US Plan Assets \| Level Two \| International	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	118	107	'
US Plan Assets \| Level Two \| Corporate bonds	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	548	495	'
US Plan Assets \| Level Two \| Government and government-related debt securities	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	478	481	'
US Plan Assets \| Level Two \| Collateralized mortgage obligations and mortgage backed securities	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	99	99	'
US Plan Assets \| Level Three	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	266	241	'
US Plan Assets \| Level Three \| Cash and cash equivalents	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	'	'	'
US Plan Assets \| Level Three \| Private equity	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	204	185	'
US Plan Assets \| Level Three \| Real estate	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	62	56	'
International	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	6,246	5,120	4,097
International \| Cash and cash equivalents	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	267	168	'
International \| US	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	2,175	1,583	'
International \| International	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	1,566	1,258	'
International \| Corporate bonds	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	576	540	'
International \| Government and government-related debt securities	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	997	976	'
International \| Collateralized mortgage obligations and mortgage backed securities	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	301	289	'
International \| Private equity	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	206	128	'
International \| Real estate	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	60	55	'
International \| Other	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	98	123	'
International \| Level One	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	2,726	2,074	'
International \| Level One \| Cash and cash equivalents	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	127	157	'
International \| Level One \| US	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	1,603	1,152	'
International \| Level One \| International	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	990	765	'
International \| Level One \| Government and government-related debt securities	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	6	'	'
International \| Level Two	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	3,156	2,740	'
International \| Level Two \| Cash and cash equivalents	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	140	11	'
International \| Level Two \| US	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	572	431	'
International \| Level Two \| International	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	576	493	'
International \| Level Two \| Corporate bonds	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	576	540	'
International \| Level Two \| Government and government-related debt securities	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	991	976	'
International \| Level Two \| Collateralized mortgage obligations and mortgage backed securities	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	301	289	'
International \| Level Three	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	364	306	'
International \| Level Three \| Private equity	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	206	128	'
International \| Level Three \| Real estate	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	60	55	'
International \| Level Three \| Other	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Plan assets at fair value	$98	$123	'

Pension_and_Other_Benefit_Plan8

Pension and Other Benefit Plans - Defined Benefit Plan Weighted Average Assumptions Used in Calculating Benefit Obligation and Net Periodic Benefit Cost For US Postretirement Medical Plan (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Discount rate	4.25%	4.25%	'
Return on plan assets	0.00%	'	'
Current medical cost trend rate	7.50%	7.50%	'
Ultimate medical cost trend rate	5.00%	5.00%	'
Year that the rate reaches the ultimate trend rate	'2023	'2023	'
Postretirement medical plan	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Discount rate	5.00%	5.00%	5.50%
Return on plan assets	7.00%	7.00%	7.00%
Current medical cost trend rate	8.00%	8.00%	8.00%
Ultimate medical cost trend rate	5.00%	5.00%	5.00%
Year that the rate reaches the ultimate trend rate	'2023	'2018	'2017

Pension_and_Other_Benefit_Plan9

Pension and Other Benefit Plans - Changes in Accumulated Postretirement Benefit Obligation, Plan Assets and Funded Status (Detail) (Postretirement medical plan, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Postretirement medical plan	'	'
Change in Projected Benefit Obligations	'	'
Projected benefit obligation at beginning of year	$1,410	$1,188
Service cost	48	29
Interest cost	56	58
Contributions by plan participants	6	6
Actuarial (gains) losses	-232	171
Benefits paid	-41	-42
Projected benefit obligation at end of year	1,247	1,410
Change in Plan Assets	'	'
Plan assets at fair value at beginning of year	576	443
Company contributions	83	106
Contributions by plan participants	6	6
Benefits paid	-41	-42
Actual return on plan assets	107	63
Plan assets at fair value at end of year	731	576
(Unfunded Liability) / Asset	-516	-834
Amounts Recognized in Accumulated Other Comprehensive Loss	'	'
Actuarial (gains) losses	87	411
Prior service cost	-12	-16
Total amount recognized in accumulated other comprehensive income	$75	$395

Recovered_Sheet1

Pension and Other Benefit Plans - Effect of One Percentage Point Change in Assumed Health Care Cost Trend Rates (Detail) (Postretirement medical plan, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Postretirement medical plan	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'
Effect on total service and interest cost components, One percentage point increase	$47
Effect on accumulated postretirement benefit obligation, One percentage point increase	267
Effect on total service and interest cost components, One percentage point decrease	-33
Effect on accumulated postretirement benefit obligation, One percentage point decrease	($195)

Recovered_Sheet2

Pension and Other Benefit Plans - Expected Benefits to be Paid Under US and International Pension Plans and Postretirement Medical Plan (Detail) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified	Dec. 31, 2013
US Plan Assets	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'
2014	$147
2015	153
2016	160
2017	168
2018	177
2019 - 2023	1,038
International	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'
2014	204
2015	217
2016	236
2017	251
2018	275
2019 - 2023	1,562
Postretirement medical plan	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'
2014	46
2015	49
2016	53
2017	57
2018	61
2019 - 2023	$376

Recovered_Sheet3

Pension and Other Benefit Plans - Defined Benefit Plan, Amounts That Will be Amortized from Accumulated Other Comprehensive Income (loss) in Next Fiscal Year (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Pension Plans	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'
Net actuarial losses	$153
Prior service cost (credit)	133
Postretirement medical plan	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'
Net actuarial losses	2
Prior service cost (credit)	($4)

Recovered_Sheet4

Pension and Other Benefit Plans - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Frequency of asset performance monitored, years	'5 years	'	'
Anticipated contributions to postretirement benefit plans	$500	'	'
Expenses for deferred benefit programs	671	620	582
Minimum	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Range of expected benefits to be paid for the annual pension and postretirement medical plans (net of the annual Medicare Part D subsidy)	4	'	'
Maximum	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Range of expected benefits to be paid for the annual pension and postretirement medical plans (net of the annual Medicare Part D subsidy)	$9	'	'
Postretirement medical plan \| US	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Investment of assets in government and government-related debt securities under US postretirement medical plan	61.00%	'	'
Postretirement medical plan \| Government and government-related debt securities	'	'	'
Pension Plans Postretirement And Other Employee Benefits [Line Items]	'	'	'
Investment of assets in government and government-related debt securities under US postretirement medical plan	39.00%	'	'

Supplementary_Information_Cash

Supplementary Information - Cash Paid for Interest and Income Taxes (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'
Interest	$369	$313	$294
Income taxes	$1,729	$1,736	$1,836

Supplementary_Information_Inte

Supplementary Information - Interest and Other Income, Net (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'
Interest income	$33	$30	$40
Equity in net earnings of affiliated companies	132	142	90
Interest and other income, net	$165	$172	$130

Supplementary_Information_Allo

Supplementary Information - Allowance for Doubtful Accounts (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'
Balance at beginning of year	$202	$177	$185
Provision	205	37	37
Amounts written off	-23	-10	-45
Divestiture of business	'	-2	'
Balance at end of year	$384	$202	$177

Supplementary_Information_Acco

Supplementary Information - Accounts Payable and Accrued Liabilities (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]	'	'
Payroll, vacation and employee benefits	$1,910	$1,825
Trade	4,155	3,550
Other	2,772	3,078
Accounts payable and accrued liabilities	$8,837	$8,453

Discontinued_Operations_Discon

Discontinued Operations - Discontinued Operations (Detail) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure Discontinued Operations Discontinued Operations Detail [Line Items]	'	'	'	'
Revenue	'	$102	$1,399	$2,961
Income (loss) before taxes	'	-63	274	320
Tax expense	'	-6	-37	-53
Net income attributable to noncontrolling interests	'	'	-5	-6
Gain on divestitures, net of tax	220	'	28	220
Income (loss) from discontinued operations	'	($69)	$260	$481

Discontinued_Operations_Additi

Discontinued Operations - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended			3 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2012	Jun. 30, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2012	Sep. 30, 2012
	Sep. 30, 2012	Jun. 30, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Wilson Distribution Segment	CE Franklin Ltd.
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]	'	'	'	'	'	'	'
Proceed from sale of business	'	'	'	'	'	$906	$122
Pre tax gain	'	'	'	'	'	137	30
Gain on divestitures, net of tax	'	220	'	28	220	16	12
Percentage of Schlumberger completed the sale of interest in CE Franklin Ltd. to NOV	56.00%	'	'	'	'	'	'
Global Connectivity Services business discontinued operations	'	$385	($28)	$1,011	$373	'	'