Schlumberger Limited (SLB) 10-K 22 Jan 20 2019 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Jun. 30, 2019
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Registrant Name	SCHLUMBERGER LIMITED/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 Interactive Data Current	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	1,384,515,345
Entity Public Float		$ 54,890
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	SLB
Security Exchange Name	NYSE
Entity File Number	1-4601
Entity Incorporation, State or Country Code	P8
Entity Tax Identification Number	52-0684746
Entity Address, Address Line One	5599 San Felipe
Entity Address, Address Line Two	17th Floor
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Country	US
Entity Address, Postal Zip Code	77056
City Area Code	713
Local Phone Number	513-2000
Document Annual Report	true
Document Transition Report	false
Documents Incorporated by Reference	Certain information required to be furnished pursuant to Part III of this Form 10-K is set forth in, and is incorporated by reference from, Schlumberger’s definitive proxy statement for its 2020 Annual General Meeting of Stockholders, to be filed by Schlumberger with the Securities and Exchange Commission (“SEC”) pursuant to Regulation 14A within 120 days after December 31, 2019 (the “2020 Proxy Statement”).

CONSOLIDATED STATEMENT OF INCOM

CONSOLIDATED STATEMENT OF INCOME (LOSS) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue
Total Revenue	$ 32,917	$ 32,815	$ 30,440
Interest & other income	86	149	224
Gain on sale of business		215
Gain on formation of Sensia joint venture	247
Expenses
Research & engineering	717	702	787
General & administrative	474	444	432
Impairments & other	13,148	356	3,211
Merger & integration			308
Interest	609	575	566
Income (loss) before taxes	(10,418)	2,624	(1,183)
Tax expense (benefit)	(311)	447	330
Net income (loss)	(10,107)	2,177	(1,513)
Net income (loss) attributable to noncontrolling interests	30	39	(8)
Net income (loss) attributable to Schlumberger	$ (10,137)	$ 2,138	$ (1,505)
Basic earnings (loss) per share of Schlumberger	$ (7.32)	$ 1.54	$ (1.08)
Diluted earnings (loss) per share of Schlumberger	$ (7.32)	$ 1.53	$ (1.08)
Average shares outstanding:
Basic	1,385	1,385	1,388
Assuming dilution	1,385	1,393	1,388
Services
Revenue
Total Revenue	$ 24,358	$ 24,296	$ 21,927
Expenses
Cost of services and sales	20,828	20,618	18,206
Product
Revenue
Total Revenue	8,559	8,519	8,513
Expenses
Cost of services and sales	$ 7,892	$ 7,860	$ 8,337

CONSOLIDATED STATEMENT OF COMPR

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (10,107)	$ 2,177	$ (1,513)
Currency translation adjustments
Net change arising during the period	67	(191)	(3)
Marketable securities
Unrealized loss arising during the period		(11)	(8)
Cash flow hedges
Net gain (loss) on cash flow hedges	(32)	(16)	22
Reclassification to net income (loss) of net realized loss	10	1
Pension and other postretirement benefit plans
Actuarial gain (loss) arising during the period	127	(186)	134
Amortization to net income (loss) of net actuarial loss	94	187	159
Amortization to net income (loss) of net prior service (credit) cost	(11)	(5)	80
Income taxes on pension and other postretirement benefit plans	(71)	(18)	(15)
Comprehensive income (loss)	(9,923)	1,938	(1,144)
Comprehensive income (loss) attributable to noncontrolling interests	30	39	(8)
Comprehensive income (loss) attributable to Schlumberger	$ (9,953)	$ 1,899	$ (1,136)

CONSOLIDATED BALANCE SHEET

CONSOLIDATED BALANCE SHEET - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Current Assets
Cash	$ 1,137	$ 1,433
Short-term investments	1,030	1,344
Receivables less allowance for doubtful accounts (2019 - $255; 2018 - $249)	7,747	7,881
Inventories	4,130	4,010
Other current assets	1,486	1,063
Current assets total	15,530	15,731
Investments in Affiliated Companies	1,565	1,538
Fixed Assets less accumulated depreciation	9,270	11,679
Multiclient Seismic Data	568	601
Goodwill	16,042	24,931
Intangible Assets	7,089	8,727
Other Assets	6,248	7,300
Total Assets	56,312	70,507
Current Liabilities
Accounts payable and accrued liabilities	10,663	10,223
Estimated liability for taxes on income	1,209	1,155
Short-term borrowings and current portion of long-term debt	524	1,407
Dividends payable	702	701
Current Liabilities Total	13,098	13,486
Long-term Debt	14,770	14,644
Postretirement Benefits	967	1,153
Deferred Taxes	491	1,441
Other Liabilities	2,810	3,197
Total Liabilities	32,136	33,921
Equity
Common stock	13,078	13,132
Treasury stock	(3,631)	(4,006)
Retained earnings	18,751	31,658
Accumulated other comprehensive loss	(4,438)	(4,622)
Schlumberger stockholders' equity	23,760	36,162
Noncontrolling interests	416	424
Total equity	24,176	36,586
Liabilities and stockholders equity	$ 56,312	$ 70,507

CONSOLIDATED BALANCE SHEET (Par

CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts on receivable	$ 255	$ 249	$ 241	$ 397

CONSOLIDATED STATEMENT OF CASH

CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income (loss)		$ (10,107)	$ 2,177	$ (1,513)
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Impairments and other charges		13,148	356	3,764
Gain on formation of Sensia joint venture		(247)
Gain on sale of WesternGeco marine seismic acquisition business			(215)
Depreciation and amortization	[1]	3,589	3,556	3,837
Deferred taxes		(1,011)	(245)	(260)
Stock-based compensation expense		405	345	343
Pension and other postretirement benefits funding		(25)	(83)	(133)
Earnings of equity method investments, less dividends received		6	(48)	(56)
Change in assets and liabilities:
Decrease (increase) in receivables	[2]	142	430	(124)
(Increase) decrease in inventories	[2]	(314)	(10)	108
(Increase) decrease in other current assets	[2]	(68)	121	(174)
Decrease (increase) in other assets	[2]	22	(58)	402
Decrease in accounts payable and accrued liabilities	[2]	(161)	(824)	(737)
(Decrease) increase in estimated liability for taxes on income	[2]	6	(103)	115
(Decrease) increase in other liabilities	[2]	(52)	69	(28)
Other	[2]	98	245	119
NET CASH PROVIDED BY OPERATING ACTIVITIES		5,431	5,713	5,663
Cash flows from investing activities:
Capital expenditures		(1,724)	(2,160)	(2,107)
APS investments		(781)	(981)	(1,609)
Multiclient seismic data capitalized		(231)	(100)	(276)
Business acquisitions and investments, net of cash acquired		(23)	(292)	(847)
Net proceeds from divestiture and formation of Sensia joint venture		586
Proceeds from sale of WesternGeco marine seismic business, net of cash divested			579
Sale of investments, net		317	1,943	3,277
Other		(155)	(29)	(217)
NET CASH USED IN INVESTING ACTIVITIES		(2,011)	(1,040)	(1,779)
Cash flows from financing activities:
Dividends paid		(2,769)	(2,770)	(2,778)
Proceeds from employee stock purchase plan		196	227	212
Proceeds from exercise of stock options		23	34	85
Stock repurchase program		(278)	(400)	(969)
Proceeds from issuance of long-term debt		4,004	898	2,371
Repayment of long-term debt		(4,799)	(2,861)	(2,961)
Net decrease in short-term borrowings		(44)	(85)	(1,022)
Other		(51)	(63)	29
NET CASH USED IN FINANCING ACTIVITIES		(3,718)	(5,020)	(5,033)
Net decrease in cash before translation effect		(298)	(347)	(1,149)
Translation effect on cash		2	(19)	19
Cash, beginning of period		1,433	1,799	2,929
Cash, end of period		$ 1,137	$ 1,433	$ 1,799
[1]	Includes depreciation of property, plant and equipment and amortization of intangible assets, multiclient seismic data costs and APS investments.
[2]	Net of the effect of business acquisitions and divestitures.

CONSOLIDATED STATEMENT OF STOCK

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock Issued	Common Stock In Treasury	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balance at Dec. 31, 2016	$ 41,529	$ 12,801	$ (3,550)	$ 36,470	$ (4,643)	$ 451
Balance, shares at Dec. 31, 2016	1,391	1,434
Treasury shares, Balance at Dec. 31, 2016			(43)
Net income (loss)	$ (1,513)			(1,505)		(8)
Currency translation adjustments	(3)				(3)
Changes in unrealized gain on marketable securities	(8)				(8)
Changes in fair value of cash flow hedges	22				22
Pension and other postretirement benefit plans	358				358
Shares sold to optionees, less shares exchanged	$ 85	$ (10)	$ 95
Shares sold to optionees, less shares exchanged, shares	1		1
Vesting of restricted stock		(110)	$ 110
Vesting of restricted stock, shares	2		2
Shares issued under employee stock purchase plan	$ 212	(52)	$ 264
Shares issued under employee stock purchase plan, shares	3		3
Stock repurchase program	$ (969)		$ (969)
Stock repurchase program, shares	(13)		(13)
Stock-based compensation expense	$ 343	343
Dividends declared	(2,775)			(2,775)
Other	(20)	3	$ 1			(24)
Balance at Dec. 31, 2017	$ 37,261	$ 12,975	$ (4,049)	32,190	(4,274)	419
Balance, shares at Dec. 31, 2017	1,384	1,434
Treasury shares, Balance at Dec. 31, 2017			(50)
Net income (loss)	$ 2,177			2,138		39
Currency translation adjustments	(196)				(191)	(5)
Changes in unrealized gain on marketable securities	(11)				(11)
Changes in fair value of cash flow hedges	(15)				(15)
Pension and other postretirement benefit plans	(22)				(22)
Shares sold to optionees, less shares exchanged	$ 34	$ (41)	$ 75
Shares sold to optionees, less shares exchanged, shares	1		1
Vesting of restricted stock		(72)	$ 72
Vesting of restricted stock, shares	1		1
Shares issued under employee stock purchase plan	$ 227	(67)	$ 294
Shares issued under employee stock purchase plan, shares	3		3
Stock repurchase program	$ (400)		$ (400)
Stock repurchase program, shares	(6)		(6)
Stock-based compensation expense	$ 345	345
Dividends declared	(2,770)			(2,770)
Stranded tax related to US pension	(109)			109	(109)
Other	(44)	(8)	$ 2	(9)		(29)
Balance at Dec. 31, 2018	$ 36,586	$ 13,132	$ (4,006)	31,658	(4,622)	424
Balance, shares at Dec. 31, 2018	1,383	1,434
Treasury shares, Balance at Dec. 31, 2018			(51)
Net income (loss)	$ (10,107)			(10,137)		30
Currency translation adjustments	66				67	(1)
Changes in fair value of cash flow hedges	(22)				(22)
Pension and other postretirement benefit plans	139				139
Shares sold to optionees, less shares exchanged	$ 23	$ (26)	$ 49
Shares sold to optionees, less shares exchanged, shares	1		1
Vesting of restricted stock		(155)	$ 155
Vesting of restricted stock, shares	2		2
Shares issued under employee stock purchase plan	$ 196	(249)	$ 445
Shares issued under employee stock purchase plan, shares	6		6
Stock repurchase program	$ (278)		$ (278)
Stock repurchase program, shares	(7)		(7)
Stock-based compensation expense	$ 405	405
Dividends declared	(2,770)			(2,770)
Other	(62)	(29)	$ 4			(37)
Balance at Dec. 31, 2019	$ 24,176	$ 13,078	$ (3,631)	$ 18,751	$ (4,438)	$ 416
Balance, shares at Dec. 31, 2019	1,385	1,434
Treasury shares, Balance at Dec. 31, 2019			(49)

CONSOLIDATED STATEMENT OF STO_2

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Retained Earnings
Dividends declared, per share	$ 2	$ 2	$ 2

Business Description

Business Description	12 Months Ended
	Dec. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
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 for reservoir characterization, drilling, production and processing to the oil and gas industry.

Summary of Accounting Policies

Summary of Accounting Policies	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Summary of Accounting Policies	2. Summary of Accounting Policies The Consolidated Financial Statements Use of Estimates The preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the 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 ongoing basis, Schlumberger evaluates its estimates, including those related to collectibility of accounts receivable; revenue recognized for certain long-term construction-type contracts over time; recoverability of fixed assets, goodwill, intangible assets, Asset Performance Solutions investments 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 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 adopted Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers Consolidated Financial Statements Schlumberger recognizes revenue upon the transfer of control of promised products or services to customers at an amount that reflects the consideration it expects to receive in exchange for these products or services. The vast majority of Schlumberger’s services and product offerings are short-term in nature. The time between invoicing and when payment is due under these arrangements is generally between 30 to 60 days. Revenue is occasionally generated from contractual arrangements that include multiple performance obligations. Revenue from these arrangements is allocated to each performance obligation based on its relative standalone selling price. Standalone selling prices are generally determined based on the prices charged to customers or using expected costs plus margin. Revenue is recognized for certain long-term construction-type contracts over time. These contracts involve significant design and engineering efforts in order to satisfy custom designs for customer-specific applications. Revenue is recognized as work progresses on each contract. Progress is measured by the ratio of actual costs incurred to date on the project in relation to total estimated project costs. The estimate of total project costs has a significant impact on both the amount of revenue recognized as well as the related profit on a project. Revenue and profits on contracts can also be significantly affected by change orders and claims. Due to the nature of these projects, adjustments to estimates of contract revenue and total contract costs may be required as work progresses. Progress billings are generally issued upon completion of certain phases of work as stipulated in the contract. Any expected losses on a project are recorded in full in the period in which they become probable. Due to the nature of its businesses, Schlumberger does not have significant backlog. Total backlog was $3.0 billion at December 31, 2019, of which approximately 50% is expected to be recognized as revenue during 2020. 32 Short-term Investments Short-term investments are comprised primarily of money market funds, time deposits, certificates of deposit, commercial paper, bonds and notes, substantially all of which are denominated in US dollars and are stated at cost plus accrued interest, which approximates fair value. For purposes of the Consolidated Statement of Cash Flows Short-term investments 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 Equity and cost method investments are classified as Investments in Affiliated Companies Consolidated Balance Sheet Multiclient Seismic Data Schlumberger’s 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 services 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 involve 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. Asset Performance Solutions Asset Performance Solutions (“APS”), formerly Schlumberger Production Management, projects are focused on developing and managing production on behalf of Schlumberger’s clients under long-term agreements. Schlumberger will invest its own services and products, and historically, cash in certain cases, into the field development activities and operations. Although in certain arrangements Schlumberger is paid for a portion of the services or products it provides, generally Schlumberger will not be paid at the time of providing its services or upon delivery of its products. Instead, Schlumberger is compensated based upon cash flow generated or on a fee-per-barrel basis. This includes certain arrangements whereby Schlumberger is only compensated based upon incremental production it helps deliver above a mutually agreed baseline. Revenue from APS arrangements, which is recognized as the related production is achieved, represented less than 5% of Schlumberger’s consolidated revenue during each of 2019, 2018 and 2017. Schlumberger capitalizes its cash investments in a project as well as the direct costs associated with providing services or products for which Schlumberger will be compensated when the related production is achieved. These capitalized investments are amortized to the Consolidated Statement of Income (Loss) The unamortized portion of Schlumberger’s investments in APS projects was $3.724 billion and $4.201 billion at December 31, 2019 and 2018, respectively. These amounts are included within Other Assets Consolidated Balance Sheet. 33 Concentration of Credit Risk Schlumberger’s assets that are exposed to concentrations of credit risk consist primarily of cash, short-term investments, receivables from clients and derivative financial instruments. Schlumberger places its cash and short-term investments 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. By using derivative financial instruments to hedge certain exposures, 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. Schlumberger generates revenue in more than 120 countries and as such, its accounts receivable are spread over many countries and customers. Accounts receivable in the United States represented 18% of Schlumberger’s accounts receivable balance at December 31, 2019. No other country accounted for greater than 10% of Schlumberger’s accounts receivable balance. Earnings per Share The following is a reconciliation from basic to diluted earnings (loss) per share of Schlumberger for each of the last three years: (Stated in millions, except per share amounts) Net Income (Loss) Attributable to Schlumberger Average Shares Outstanding Earnings (Loss) per Share 2019: Basic $ (10,137 ) 1,385 $ (7.32 ) Assumed exercise of stock options - - Unvested restricted stock - - Diluted $ (10,137 ) 1,385 $ (7.32 ) 2018: Basic $ 2,138 1,385 $ 1.54 Assumed exercise of stock options - - Unvested restricted stock - 8 Diluted $ 2,138 1,393 $ 1.53 2017: Basic $ (1,505 ) 1,388 $ (1.08 ) Assumed exercise of stock options - - Unvested restricted stock - - Diluted $ (1,505 ) 1,388 $ (1.08 ) The number of outstanding employee stock options to purchase shares of Schlumberger common stock and unvested restricted stock units that were not included in the computation of diluted earnings/loss per share, because to do so would have had an anti-dilutive effect, were as follows: (Stated in millions) 2019 2018 2017 Employee stock options 46 40 47 Unvested restricted stock 12 - 5 34 Reclassifications Certain prior period amounts have been reclassified to conform to the current period presentation.

Charges and Credits

Charges and Credits	12 Months Ended
	Dec. 31, 2019
Restructuring And Related Activities [Abstract]
Charges and Credits	3. Charges and Credits Schlumberger recorded the following charges and credits during 2019, 2018 and 2017: 2019 Schlumberger recorded the following charges and credits during 2019, all of which are classified as Impairments & other Consolidated Statement of Income (Loss) (Stated in millions) Pretax Tax Net Fourth quarter: North America restructuring $ 225 $ 51 $ 174 Other restructuring 104 (33 ) 137 Workforce reductions 68 8 60 Pension settlement accounting 37 8 29 Repurchase of bonds 22 5 17 Gain on formation of Sensia joint venture (247 ) (42 ) (205 ) Third quarter: Goodwill impairment 8,828 43 8,785 Intangible assets impairment 1,085 248 837 North America pressure pumping 1,575 344 1,231 Other North America-related 310 53 257 Argentina 127 - 127 Equity-method investments 231 12 219 Asset Performance Solutions 294 - 294 Other 242 13 229 $ 12,901 $ 710 $ 12,191 Fourth quarter of 2019: • Schlumberger recorded the following restructuring charges during the fourth quarter of 2019: - $225 million associated with facility closures and costs to exit certain activities in North America. These charges included $123 million relating to fixed assets; $55 million of right-of-use assets under operating leases; and $47 million of other exit costs. - $104 million primarily relating to restructuring certain activities outside of North America, which included $68 million associated with assets to be divested and $36 million of facility closure costs. - $68 million of severance associated with streamlining its operations and exiting certain activities. • Certain of Schlumberger’s defined benefit pension plans offered former Schlumberger employees, who had not yet commenced receiving their pension benefits, an opportunity to receive a lump sum payout of their vested pension benefit. Schlumberger’s pension plans paid $257 million from pension plan assets to those who accepted this offer, thereby reducing its pension benefit obligations. These transactions had no cash impact on Schlumberger, but did result in a non-cash pension settlement charge of $37 million in the fourth quarter of 2019. This settlement charge represented the immediate recognition of the related deferred actuarial losses in Accumulated Other Comprehensive Loss . • During the fourth quarter of 2019, Schlumberger repurchased certain Senior Notes (see Note 9 – Long-term debt ), which resulted in a $22 million charge. 35 • On October 1, 2019, Schlumberger and Rockwell completed the formation of Sensia, a joint venture that is the oil and gas industry’s first digitally enabled integrated automation solutions provider. Rockwell Automation owns 53% of the joint venture and Schlumberger owns 47%. In connection with this transaction, Schlumberger received a cash payment of $238 million. Schlumberger will account for its investment under the equity method of accounting. During the fourth quarter of 2019, Schlumberger recorded a $247 million gain as a result of the deconsolidation of certain of its businesses in connection with the formation of the joint venture. This gain, which is equal to the sum of the $238 million of cash proceeds received and the fair value of Schlumberger’s retained noncontrolling investment in the businesses it contributed less the carrying amount of the assets and liabilities of such businesses at the time of the closing, is classified as Gain on formation of Sensia in the Consolidated Statement of Income (Loss) . Third quarter of 2019: • During August 2019, Schlumberger’s market capitalization deteriorated significantly compared to the end of the second quarter of 2019. Schlumberger’s stock price reached a low not seen since 2005. Additionally, the Philadelphia Oil Services Sector Index, which is comprised of companies in the oil services sector, reached an 18-year low. As a result of these facts, Schlumberger determined that it was more likely than not that the fair value of certain of its reporting units were less than their carrying value. Therefore, Schlumberger performed an interim goodwill impairment test as of August 31, 2019. As of August 31, 2019, Schlumberger had 17 reporting units with goodwill balances aggregating $25.0 billion. Schlumberger determined that the fair value of seven of its reporting units, representing approximately $13.8 billion of the goodwill, was substantially in excess of their carrying value. Schlumberger performed a detailed quantitative impairment assessment of the remaining 10 reporting units, which represented $11.2 billion of goodwill. As a result of this assessment, Schlumberger concluded that the goodwill associated with nine of the 10 reporting units was impaired, resulting in an $8.8 billion goodwill impairment charge. This charge primarily relates to Schlumberger’s Drilling and Cameron segments. Following the $8.8 billion goodwill impairment charge relating to these nine reporting units, only three had a remaining goodwill balance. These three reporting units had goodwill balances which ranged between $0.4 billion and $0.6 billion and aggregated to $1.5 billion as of August 31, 2019. The tenth reporting unit, which was determined not to be impaired, had $0.9 billion of goodwill. Schlumberger primarily used the income approach to estimate the fair value of its reporting units, but also considered the market approach to validate the results. The income approach estimates the fair value by discounting each reporting unit’s estimated future cash flows using Schlumberger’s estimate of the discount rate, or expected return, that a marketplace participant would have required as of the valuation date. The market approach includes the use of comparative multiples to corroborate the discounted cash flow results. The market approach involves significant judgement involved in the selection of the appropriate peer group companies and valuation multiples. Some of the more significant assumptions inherent in the income approach include the estimated future net annual cash flows for each reporting unit and the discount rate. Schlumberger selected the assumptions used in the discounted cash flow projections using historical data supplemented by current and anticipated market conditions and estimated growth rates. Schlumberger’s estimates are based upon assumptions believed to be reasonable. However, given the inherent uncertainty in determining the assumptions underlying a discounted cash flow analysis, actual results may differ from those used in Schlumberger’s valuations which could result in additional impairment charges in the future. The discount rates utilized to value Schlumberger’s reporting units were between 12.5% and 14.0%, depending on the risks and uncertainty inherent in the respective reporting unit. Assuming all other assumptions and inputs used in each of the respective discounted cash flow analysis were held constant, a 50 basis point increase in the discount rate assumption would have increased the goodwill impairment charge by approximately $0.3 billion. Conversely, assuming all other assumptions and inputs used in each of the respective discounted cash flow analysis were held constant, a 50 basis point decrease in the discount rate assumption would have decreased the goodwill impairment charge by approximately $0.4 billion. • The negative market indicators described above combined with deteriorating market conditions in North America, as well as the results of the previously mentioned fair value determinations of certain of Schlumberger’s reporting units and the appointment of a new Chief Executive Officer (as described below), were all triggering events that indicated that certain of Schlumberger’s long-lived tangible and intangible assets may be impaired. 36 Recoverability testing, which was performed as of August 31, 2019, indicated that long-lived assets associated with certain asset groups were impaired. The estimated fair value of these asset groups was determined to be below their carrying value. As a result, Schlumberger recorded the following impairment and related charges: - $1.085 billion of intangible assets, of which $842 million relates to Schlumberger’s 2010 acquisition of Smith International, Inc. The remaining $243 million primarily relates to other acquisitions in North America. - $1.575 billion of charges relating to Schlumberger’s pressure pumping business in North America. This amount consists of $1.324 billion of pressure pumping equipment and related assets; $98 million of right-of-use assets under operating leases; $121 million relating to a supply contract; $19 million of inventory; and $13 million of severance. - $310 million of charges primarily relating to other businesses in North America, consisting of $230 million of fixed asset impairments, $70 million of inventory write-downs and $10 million of severance. • As a result of the ongoing economic challenges in Argentina, Schlumberger recorded $127 million of charges during the third quarter of 2019. This consists of $72 million of asset impairments, a $26 million devaluation charge and $29 million of severance. • Schlumberger also recorded the following impairment and restructuring charges during the third quarter of 2019: - $231 million relating to certain equity method investments that were determined to be other-than-temporarily impaired. - $294 million impairment relating to the carrying value of certain smaller APS projects. - $242 million of restructuring charges consisting of: $62 million of severance; $57 million relating to the acceleration of stock-based compensation expense associated with certain individuals; $49 million of business divestiture costs; $29 million relating to the repurchase of certain Senior Notes (see Note 9 - Long-term Debt ); and $45 million of other provisions. The fair value of certain of the assets impaired during 2019 was estimated based on the present value of projected future cash flows that the underlying assets are expected to generate. Such estimates included unobservable inputs that required significant judgment. During the third quarter of 2019, Schlumberger’s Board of Directors announced the appointment of a new Chief Executive Officer. As the new Chief Executive Officer further develops and implements his strategy, it may result in additional restructuring charges in future periods. Furthermore, Schlumberger may be required to record additional impairment charges if industry conditions deteriorate. 2018 During 2018, Schlumberger recorded the following charges and credits: (Stated in millions) Pretax Tax Net Gain on sale of marine seismic acquisition business $ (215 ) $ (19 ) $ (196 ) Workforce reductions 184 20 164 Asset impairments 172 16 156 $ 141 $ 17 $ 124 • During the fourth quarter of 2018, Schlumberger completed the divestiture of its marine seismic acquisition business to Shearwater GeoServices (“Shearwater”) for $600 million of cash and a 15% equity interest in Shearwater. As a result of this transaction, Schlumberger recognized a $215 million gain. This gain is classified in Gain on sale of business in the Consolidated Statement of Income (Loss). • During the fourth quarter of 2018, Schlumberger recorded $172 million of charges to fully impair certain long-lived assets. This amount is classified in Impairments & other in the Consolidated Statement of Income (Loss) . • During the second quarter of 2018, Schlumberger recorded a $184 million charge associated with workforce reductions, primarily to further streamline its support cost structure. This charge is classified in Impairment & other in the Consolidated Statement of Income (Loss) . 37 2017 Schlumberger recorded the following charges and credits during 2017, of which $3.211 billion were classified as Impairments & other Cost of sales Merger & integration Consolidated Statement of Income (Loss) (Stated in millions) Noncontrolling Pretax Tax Interests Net Impairment & other WesternGeco seismic restructuring charges $ 1,114 $ 20 $ - $ 1,094 Venezuela investment write-down 938 - - 938 Promissory note fair value adjustment and other 510 - 12 498 Workforce reductions 247 13 - 234 Multiclient seismic data impairment 246 81 - 165 Other restructuring charges 156 10 22 124 Cost of sales - - Provision for loss on long-term construction project 245 22 - 223 Merger & integration - - Merger and integration-related costs 308 70 - 238 US tax reform charge - (76 ) - 76 $ 3,764 $ 140 $ 34 $ 3,590 • During the fourth quarter of 2017, Schlumberger decided to cease all future marine seismic acquisition activities, after satisfying its remaining contractual commitments. This decision resulted in a charge of $1.025 billion consisting of the following: $786 million write-down of the vessels to their estimated fair value; $78 million impairment of intangible assets; $59 million write-down of inventory, and $102 million of other related restructuring costs. The fair value of the vessels was determined based on unobservable inputs that required significant judgments. Schlumberger also recorded a $90 million impairment charge relating to its land seismic business • As a result of the unfavorable near-term outlook for exploration spending, Schlumberger determined in the fourth quarter of 2017 that the carrying value of certain multiclient seismic data, primarily related to the US Gulf of Mexico, was impaired, resulting in a $246 million charge that was estimated based on the projected present value of future cash flows these surveys are expected to generate. • During the fourth quarter of 2017, Schlumberger determined that it was appropriate to write-down its investment in Venezuela, given the recent economic and political developments in the country which have created significant uncertainties regarding recoverability. As a result, Schlumberger recorded a charge of $938 million, reflecting $469 million of accounts receivable, a $105 million other-than-temporary impairment charge relating to certain promissory notes, $285 million of fixed assets and $79 million of other assets in the country. • During the fourth quarter of 2017, Schlumberger recorded a $245 million charge related to an estimated loss on a long-term surface facility construction project. • Schlumberger recorded $156 million of other restructuring charges during the fourth quarter of 2017, primarily relating to facility and other exit costs. • During the fourth quarter of 2017, Schlumberger recorded a $247 million charge associated with workforce reductions primarily to further streamline its support cost structure. • On December 22, 2017, the US enacted the Tax Cuts and Jobs Act (the “Act”). The Act, which is also commonly referred to as “US tax reform,” significantly changes US corporate income tax laws by, among other things, reducing the US corporate income tax rate to 21% starting in 2018 and creating a territorial tax system with a one-time mandatory tax on previously deferred foreign earnings of US subsidiaries. As a result, Schlumberger recorded a net charge of $76 million during the fourth quarter of 2017. This amount, which is included in Tax expense (benefit) in the Consolidated Statement of Income (Loss) , consists of two components: (i) a $410 million charge relating to the one-time mandatory tax on previously deferred earnings of certain non-US subsidiaries that are owned either wholly or partially by a US subsidiary of Schlumberger, and (ii) a $334 million credit resulting from the remeasurement of Schlumberger’s net deferred tax liabilities in the US based on the new lower corporate income tax rate. Although the $76 million net charge represented what Schlumberger believed was a reasonable estimate of the impact of the income tax effects of the Act on Schlumberger’s Consolidated Financial Statements 38 as of December 31, 2017, it was considered provisional. During 2018, Schlumberger finalized its accounting for this matter and concluded that no material adjustments were required. After considering the impact of foreign tax credits and tax losses, the resulting cash tax payable as a result of the one-time mandatory tax on previously deferred foreign earnings of Schlumberger’s US subsidiary was not significant. • During the second quarter of 2017, Schlumberger entered into a financing agreement with its primary customer in Venezuela. This agreement resulted in the exchange of $700 million of outstanding accounts receivable for promissory notes with a three-year • During the second quarter of 2017, Schlumberger entered into discussions with a customer relating to certain of its outstanding accounts receivable. As a result of these discussions, Schlumberger recorded a charge of $50 million to adjust these receivables to their estimated net realizable value. • Schlumberger recorded $308 million of charges during 2017 relating to employee benefits, facility closures and other merger and integration-related costs, primarily in connection with Schlumberger’s 2016 acquisition of Cameron International Corporation.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2019
Inventory Disclosure [Abstract]
Inventories	4. Inventories Inventories, which are stated at the lower of average cost or net realizable value, consist of the following: (Stated in millions) 2019 2018 Raw materials & field materials $ 1,857 $ 1,803 Work in progress 515 519 Finished goods 1,758 1,688 $ 4,130 $ 4,010

Fixed Assets

Fixed Assets	12 Months Ended
	Dec. 31, 2019
Property Plant And Equipment [Abstract]
Fixed Assets	5. Fixed Assets Fixed assets consist of the following: (Stated in millions) 2019 2018 Land $ 483 $ 462 Buildings & improvements 5,156 5,534 Machinery & equipment 29,370 32,668 35,009 38,664 Less: Accumulated depreciation 25,739 26,985 $ 9,270 $ 11,679 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. Depreciation expense, which is recorded on a straight-line basis, was $2.0 billion, $2.1 billion and $2.3 billion in 2019, 2018 and 2017, respectively.

Multiclient Seismic Data

Multiclient Seismic Data	12 Months Ended
	Dec. 31, 2019
Multiclient Seismic Data [Abstract]
Multiclient Seismic Data	6. Multiclient Seismic Data The change in the carrying amount of multiclient seismic data is as follows: (Stated in millions) 2019 2018 Balance at beginning of year $ 601 $ 727 Capitalized in period 231 100 Charged to expense (264 ) (226 ) $ 568 $ 601

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	7. Goodwill The changes in the carrying amount of goodwill by segment were as follows: (Stated in millions) Reservoir Characterization Drilling Production Cameron Total Balance, January 1, 2018 $ 4,848 $ 10,126 $ 4,697 $ 5,447 $ 25,118 Acquisitions 39 - - - 39 Business divestiture (175 ) - - - (175 ) Impact of changes in exchange rates (9 ) (15 ) (19 ) (8 ) (51 ) Balance, December 31, 2018 4,703 10,111 4,678 5,439 24,931 Impairment (97 ) (3,025 ) (705 ) (5,001 ) (8,828 ) Impact of changes in exchange rates and other (46 ) 6 (24 ) 3 (61 ) Balance, December 31, 2019 $ 4,560 $ 7,092 $ 3,949 $ 441 $ 16,042

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets	8. Intangible Assets Intangible assets consist of the following: (Stated in millions) 2019 2018 Gross Accumulated Net Book Gross Accumulated Net Book Book Amortization Value Book Value Amortization Value Customer Relationships $ 3,779 $ 868 $ 2,911 $ 4,768 $ 1,243 $ 3,525 Technology/Technical Know-How 2,498 779 1,719 3,494 1,246 2,248 Tradenames 1,885 264 1,621 2,799 628 2,171 Other 1,514 676 838 1,404 621 783 $ 9,676 $ 2,587 $ 7,089 $ 12,465 $ 3,738 $ 8,727 Customer relationships are generally amortized over periods ranging from 18 to 28 years, 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. Amortization expense was $618 million in 2019, $673 million in 2018 and $663 million in 2017. Based on the carrying value of intangible assets at December 31, 2019, amortization expense for the subsequent five years is estimated to be as follows: 2020: $530 million, 2021: $521 million, 2022: $497 million, 2023: $476 million and 2024: $472 million.

Long-term Debt and Debt Facilit

Long-term Debt and Debt Facility Agreements	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Long-term Debt and Debt Facility Agreements	9. Long-term Debt and Debt Facility Agreements Long-term Debt consists of the following: (Stated in millions) 2019 2018 3.30% Senior Notes due 2021 $ 1,597 $ 1,596 3.65% Senior Notes due 2023 1,495 1,493 3.90% Senior Notes due 2028 1,444 - 2.40% Senior Notes due 2022 998 997 4.00% Senior Notes due 2025 929 1,742 4.3% Senior Notes due 2029 845 - 3.75% Senior Notes due 2024 746 - 1.00% Guaranteed Notes due 2026 665 678 4.20% Senior Notes due 2021 600 1,100 2.65% Senior Notes due 2022 598 598 0.00% Notes due 2024 551 - 0.25% Notes due 2027 550 - 0.50% Notes due 2031 544 - 3.63% Senior Notes due 2022 294 847 7.00% Notes due 2038 208 210 5.95% Notes due 2041 114 115 5.13% Notes due 2043 99 99 4.00% Notes due 2023 81 82 3.70% Notes due 2024 55 55 3.00% Senior Notes due 2020 - 1,596 2.20% Senior Notes due 2020 - 499 4.50% Notes due 2021 - 132 3.60% Notes due 2022 - 109 Commercial paper borrowings 2,222 2,433 Other 135 263 $ 14,770 $ 14,644 During the fourth quarter of 2019, Schlumberger repurchased the remaining $416 million of its 3.00% Senior Notes due 2020; $126 million of its 4.50% Senior Notes due 2021; $500 million of its 4.20% Senior Notes due 2021; and $106 million of its 3.60% Senior Notes due 2022. Impairments & other Consolidated Statement of Income (Loss) Charges and Credits During the third quarter of 2019, Schlumberger issued €500 million of 0.00% Notes due 2024, €500 million of 0.25% Notes due 2027 and €500 million of 0.50% Notes due 2031. During the third quarter of 2019, Schlumberger repurchased $783 million of its 3.00% Senior Notes due 2020 and $321 million of its 3.625% Senior Notes due 2022. Schlumberger paid a premium of $29 million in connection with these repurchases. This premium was classified as Impairments & other Consolidated Statement of Income (Loss) Charges and Credits. During the second quarter of 2019, Schlumberger completed a debt exchange offer, pursuant to which it issued $1.500 billion in principal of 3.90% Senior Notes due 2028 (the “New Notes”) in exchange for $401 million of 3.00% Senior Notes due 2020, $234 million of 3.63% Senior Notes due 2022 and $817 million of 4.00% Senior Notes due 2025. In connection with the exchange of principal, Schlumberger paid a premium of $48 million, substantially all of which was in the form of New Notes. This premium is being amortized as additional interest expense over the term of the New Notes. During the first quarter of 2019 Schlumberger issued $750 million of 3.75% Senior Notes due 2024 and $850 million of 4.30% Senior Notes due 2029. During the fourth quarter of 2018, Schlumberger issued €600 million of 1.00% Guaranteed Notes due 2026. 41 At December 31, 2019, Schlumberger had separate committed credit facility agreements aggregating $6.5 billion with commercial banks, of which $4.3 billion was available and unused. These committed facilities support commercial paper programs in the United States and Europe, and $1.0 billion matures in February 2020, Commercial paper borrowings are classified as long-term debt to the extent they are backed up 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 programs at December 31, 2019 were $2.2 billion, all of which Long-term debt Consolidated Balance Sheet Long-term debt Consolidated Balance Sheet The weighted average interest rate on variable rate debt as of December 31, 2019 was 2.3%. Long-term Debt as of December 31, 2019 is due as follows: $2.3 billion in 2021, $1.9 billion in 2022, $1.9 billion in 2023, $3.2 billion in 2024, $0.9 billion in 2025, $0.7 billion in 2026 and $3.9 billion thereafter. The fair value of Schlumberger’s Long-term Debt 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.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2019
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	10. Derivative Instruments and Hedging Activities Schlumberger is exposed to market risks related to fluctuations in interest rates and foreign currency exchange rates. To mitigate these risks, Schlumberger utilizes derivative instruments. Schlumberger does not enter into derivative transactions for speculative purposes. Interest Rate Risk Schlumberger is subject to interest rate risk on its debt and its investment portfolio. Schlumberger maintains an interest rate risk management strategy that uses a mix of variable and fixed rate debt combined with its investment portfolio to mitigate the exposure to changes in interest rates. At December 31, 2019, Schlumberger had fixed rate debt aggregating $12.9 billion and variable rate debt aggregating $2.4 billion. Foreign Currency Exchange Rate Risk As a multinational company, Schlumberger conducts its business in over 120 countries. Schlumberger’s functional currency is primarily the US dollar. Approximately 78% of Schlumberger’s revenues in 2019 were 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 the local currency is not the functional currency and expenses denominated in local currency are not equal to revenues denominated in local currency. Schlumberger uses foreign currency forward contracts to provide a hedge against a portion of these cash flow risks. These contracts are accounted for as cash flow hedges, with the changes in the fair value of the hedge recorded on the Consolidated Balance Sheet Accumulated Other Comprehensive Loss. Accumulated Other Comprehensive Loss Schlumberger is also exposed to risks on future cash flows relating to certain of its fixed rate debt denominated in currencies other than the functional currency. Schlumberger uses cross-currency swaps to provide a hedge against these cash flow risks. 42 During 2017, a Canadian-dollar functional currency subsidiary of Schlumberger issued $1.1 billion of US-dollar denominated debt. Schlumberger entered into cross-currency swaps for an aggregate notional amount of $1.1 billion in order to hedge changes in the fair value of its $0.5 billion of 2.20% Senior Notes due 2020 and its $0.6 billion of 2.65% Senior Notes due 2022. These cross-currency swaps effectively convert the US-dollar denominated notes to Canadian-dollar denominated debt with fixed annual interest rates of 1.97% and 2.52%, respectively. During the third quarter of 2019, a US-dollar functional currency subsidiary of Schlumberger issued €1.5 billion of Euro-denominated debt. Schlumberger entered into cross-currency swaps for an aggregate notional amount of €1.5 billion in order to hedge changes in the fair value of its €0.5 billion 0.00% Notes due 2024, €0.5 billion 0.25% Notes due 2027 and €0.5 billion Notes due 2031. These cross-currency swaps effectively converted the Euro-denominated notes to US-dollar denominated debt with fixed annual interest rates of 2.29%, 2.51% and 2.76%, respectively. At December 31, 2019, Schlumberger recognized a cumulative net $34 million loss in Accumulated Other Comprehensive Loss Schlumberger is exposed to changes in the fair value of assets and liabilities denominated in currencies other than the functional currency. While Schlumberger uses foreign currency forward contracts to economically hedge this exposure as it relates to certain currencies, these contracts are not designated as hedges for accounting purposes. Instead, the fair value of the contracts is recorded on the Consolidated Balance Sheet Consolidated Statement of Income (Loss), Consolidated Statement of Income (Loss) At December 31, 2019, contracts were outstanding for the US dollar equivalent of $7.7 billion in various foreign currencies, of which $3.0 billion relates to hedges of debt denominated in currencies other than the functional currency. The fair value of outstanding derivatives was not material at December 31, 2019 and 2018. The effect of derivative instruments designated as hedges and those not designated as hedges on the Consolidated Statement of Income (Loss) (Stated in millions) Gain (Loss) Recognized in Income (Loss) Consolidated Statement 2019 2018 2017 of Income (Loss) Classification Derivatives designated as fair value hedges: Cross currency swap $ - $ (25 ) $ 73 Interest expense Derivatives designated as cash flow hedges: Cross currency swap $ (35 ) $ 80 $ (8 ) Interest expense Foreign exchange contracts (10 ) (1 ) - Cost of services/sales $ (45 ) $ 79 $ (8 ) Derivatives not designated as hedges: Foreign exchange contracts $ (5 ) $ 40 $ (26 ) Cost of services/sales

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Stockholders' Equity	11. Stockholders’ Equity Schlumberger is authorized to issue 4,500,000,000 shares of common stock, par value $0.01 per share, of which 1,384,515,345 and 1,382,964,324 shares were outstanding on December 31, 2019 and 2018, 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 Schlumberger Board of Directors. No shares of preferred stock have been issued. 43 Accumulated Other Comprehensive Loss consists of the following: (Stated in millions) Pension and Currency Other Translation Marketable Cash Flow Postretirement Adjustments Securities Hedges Benefit Plans Total Balance, January 1, 2017 $ (2,136 ) $ 21 $ (19 ) $ (2,509 ) $ (4,643 ) Other comprehensive income (loss) before reclassifications (3 ) (8 ) 22 134 145 Amounts reclassified from accumulated other comprehensive loss - - - 239 239 Income taxes - - - (15 ) (15 ) Balance, December 31, 2017 (2,139 ) 13 3 (2,151 ) (4,274 ) Reclassification to Retained Earnings - - - (109 ) (109 ) Other comprehensive loss before reclassifications (191 ) (11 ) (16 ) (186 ) (404 ) Amounts reclassified from accumulated other comprehensive loss - - 1 182 183 Income taxes - - - (18 ) (18 ) Balance, December 31, 2018 (2,330 ) 2 (12 ) (2,282 ) (4,622 ) Other comprehensive loss before reclassifications 67 - (32 ) 127 162 Amounts reclassified from accumulated other comprehensive loss - - 10 83 93 Income taxes - - - (71 ) (71 ) Balance, December 31, 2019 $ (2,263 ) $ 2 $ (34 ) $ (2,143 ) $ (4,438 ) Other comprehensive income was $184 million in 2019 and $369 million in 2017. Other comprehensive loss was $239 million in 2018.

Stock-based Compensation Plans

Stock-based Compensation Plans	12 Months Ended
	Dec. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-based Compensation Plans	12. 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 stock options granted, the exercise price equals the average of the high and low sales prices of Schlumberger stock on the date of grant; the maximum term is 10 years, and the 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: 2019 2018 2017 Dividend yield 4.8 % 2.6 % 2.3 % Expected volatility 25 % 26 % 27 % Risk-free interest rate 2.7 % 2.6 % 2.4 % Expected option life in years 7.0 7.0 7.0 Weighted-average fair value per share $ 6.21 $ 17.37 $ 20.85 44 The following table summarizes information related to options outstanding and options exercisable as of December 31, 2019: (Shares stated in thousands) Options Outstanding Options Exercisable Weighted- Average Remaining Weighted- Weighted- Options Contractual Life Average Options Average Exercise prices range Outstanding (in years) Exercise Price Exercisable Exercise Price $41.47 - $69.98 11,307 5.6 $ 53.99 5,343 $ 65.01 $70.92 - $76.74 10,202 3.0 $ 72.11 9,958 $ 72.17 $77.10 - $83.15 7,714 6.4 $ 79.32 4,257 $ 79.62 $84.22 - $88.77 9,210 3.8 $ 85.88 6,885 $ 85.38 $91.28 - $114.83 7,836 4.4 $ 95.86 7,160 $ 96.25 46,269 4.6 $ 75.65 33,603 $ 77.77 The weighted-average remaining contractual life of stock options exercisable as of December 31, 2019 was 3.47 years. The following table summarizes stock option activity during the years ended December 31, 2019, 2018 and 2017: (Shares stated in thousands) 2019 2018 2017 Weighted- Weighted- Weighted- Average Average Average Exercise Exercise Exercise Shares Price Shares Price Shares Price Outstanding at beginning of year 43,529 $ 79.36 47,210 $ 79.13 46,502 $ 78.31 Granted 5,604 $ 41.50 2,121 $ 76.95 5,024 $ 86.55 Exercised (1,045 ) $ 38.50 (936 ) $ 54.20 (1,156 ) $ 57.87 Forfeited (1,819 ) $ 74.69 (4,866 ) $ 84.19 (3,160 ) $ 86.99 Outstanding at year-end 46,269 $ 75.65 43,529 $ 79.36 47,210 $ 79.13 Stock options outstanding and stock options exercisable as of December 31, 2019 had no intrinsic value. The total intrinsic value of options exercised during the years ended December 31, 2019, 2018 and 2017 was $4 million, $15 million and $26 million, respectively. Restricted Stock Schlumberger grants performance share units to -its executives officers. The number of shares earned is determined at the end of each performance period All other restricted stock awards generally vest at the end of three years. Restricted stock awards generally do not pay dividends or have voting rights prior to vesting. Accordingly, the fair value of a 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 prior to vesting. 45 The following table summarizes information related to restricted stock transactions: (Shares stated in thousands) 2019 2018 2017 Weighted- Weighted- Weighted- Average Average Average Restricted Grant Date Restricted Grant Date Restricted Grant Date Stock Fair Value Stock Fair Value Stock Fair Value Unvested at beginning of year 6,951 $ 70.13 5,428 $ 72.33 5,112 $ 78.31 Granted 7,888 $ 35.56 3,204 $ 70.54 2,495 $ 73.09 Vested (2,722 ) $ 72.09 (982 ) $ 77.62 (1,645 ) $ 83.03 Forfeited (295 ) $ 57.41 (699 ) $ 70.67 (534 ) $ 80.17 Unvested at year-end 11,822 $ 49.86 6,951 $ 70.13 5,428 $ 72.33 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: 2019 2018 2017 Dividend yield 5.3 % 2.9 % 2.7 % Expected volatility 30 % 22 % 19 % Risk-free interest rate 2.3 % 1.6 % 1.0 % Weighted-average fair value per share $ 5.81 $ 9.01 $ 9.46 Total Stock-based Compensation Expense The following summarizes stock-based compensation expense recognized in income: (Stated in millions) 2019 2018 2017 Stock options $ 99 $ 134 $ 161 Restricted stock 274 179 148 DSPP 32 32 34 $ 405 $ 345 $ 343 At December 31, 2019, there was $324 million of total unrecognized compensation cost related to nonvested stock-based compensation arrangements, of which $191 million is expected to be recognized in 2020, $100 million in 2021, $27 million in 2022, $6 million in 2023. As of December 31, 2019, approximately 35 million shares of Schlumberger common stock were available for future grants under Schlumberger’s stock-based compensation programs.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	13. Income Taxes Schlumberger operates in more than 100 tax jurisdictions, where statutory tax rates generally vary from 0% to 35%. Income (loss) before taxes subject to United States and non-United States income taxes was as follows: (Stated in millions) 2019 2018 2017 United States $ (8,991 ) $ (55 ) $ (841 ) Outside United States (1,427 ) 2,679 (342 ) $ (10,418 ) $ 2,624 $ (1,183 ) Schlumberger recorded net pretax charges of $12.901 billion in 2019 ($8.769 billion in the US and $4.132 billion outside the US); $141 million in 2018 ($102 million in the US and $39 million outside the US); and $3.764 billion in 2017 ($533 million in the US and $3.231 billion 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) 2019 2018 Postretirement benefits $ 51 $ 122 Intangible assets (1,833 ) (2,110 ) Investments in non-US subsidiaries (220 ) (223 ) Fixed assets, net 434 (140 ) Inventories 155 111 Foreign tax credits 312 343 Other, net 610 456 $ (491 ) $ (1,441 ) The above deferred tax balances at December 31, 2019 and 2018 were net of valuation allowances relating to net operating losses in certain countries of $82 million and $87 million, respectively. Schlumberger generally does not provide for taxes related to its undistributed earnings because such earnings either would not be taxable when remitted or they are considered to be indefinitely reinvested. Taxes that would be incurred if the undistributed earnings of other Schlumberger subsidiaries were distributed to their ultimate parent company would not be material. The components of Tax expense (benefit) (Stated in millions) 2019 2018 2017 Current: United States-Federal $ (81 ) $ 124 $ (170 ) United States-State 11 (50 ) 57 Outside United States 770 618 703 700 692 590 Deferred: United States-Federal $ (660 ) $ (143 ) $ (225 ) United States-State (93 ) (4 ) 4 Outside United States (257 ) (69 ) (47 ) Valuation allowance (1 ) (29 ) 8 (1,011 ) (245 ) (260 ) $ (311 ) $ 447 $ 330 47 A reconciliation of the United States statutory federal tax rate to the consolidated effective tax rate follows: 2019 2018 2017 US federal statutory rate 21 % 21 % 35 % State tax - (2 ) - Non-US income taxed at different rates - (2 ) 29 Charges and credits (See Note 3) (19 ) - (93 ) Enactment of US tax reform (See Note 3) - - (6 ) Other 1 - 7 3 % 17 % (28 )% A number of the jurisdictions in which Schlumberger operates have tax laws that are not fully defined and are evolving. Schlumberger’s tax filings are subject to regular audit by the tax authorities. These audits may result in assessments for additional taxes that are resolved with the tax authorities or, potentially, through the courts. Tax liabilities are recorded based on estimates of additional taxes that will be due upon the conclusion of these audits. Due to the uncertain and complex application of tax regulations, the ultimate resolution of audits may result in liabilities which could be materially different from these estimates. A reconciliation of the beginning and ending amount of liabilities associated with uncertain tax positions for the years ended December 31, 2019, 2018 and 2017 is as follows: (Stated in millions) 2019 2018 2017 Balance at beginning of year $ 1,433 $ 1,393 $ 1,419 Additions based on tax positions related to the current year 86 88 132 Additions for tax positions of prior years 65 145 58 Impact of changes in exchange rates 2 (41 ) 23 Settlements with tax authorities (50 ) (22 ) (41 ) Reductions for tax positions of prior years (176 ) (57 ) (157 ) Reductions due to the lapse of the applicable statute of limitations (59 ) (73 ) (41 ) $ 1,301 $ 1,433 $ 1,393 The amounts above exclude accrued interest and penalties of $188 million, $205 million and $195 million at December 31, 2019, 2018 and 2017, respectively. Schlumberger classifies interest and penalties relating to uncertain tax positions within Tax expense (benefit) Consolidated Statement of Income (Loss) 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: Canada 2012 - 2019 Ecuador 2016 - 2019 Mexico 2012 - 2019 Norway 2014 - 2019 Russia 2016 - 2019 Saudi Arabia 2015 - 2019 United Kingdom 2017 - 2019 United States 2017 - 2019 In certain of the jurisdictions noted above, Schlumberger operates through more than one legal entity, each of which may have 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, 2019
Leases [Abstract]
Leases and Lease Commitments	14. Leases and Lease Commitments During the fourth quarter of 2018, Schlumberger adopted ASU No. 2016-02, Leases, Under the transition method selected by Schlumberger, leases existing at, or entered into after, January 1, 2018 were required to be recognized and measured. Prior period amounts have not been adjusted and continue to be reflected in accordance with Schlumberger’s historical accounting. The adoption of this standard resulted in the recording of operating lease assets and operating lease liabilities of approximately of $1.3 billion as of January 1, 2018, with no related impact on Schlumberger’s Consolidated Statement of Equity Consolidated Statement of Income (Loss) Schlumberger elected the package of practical expedients permitted under the transition guidance within the new standard which, among other things, allows companies to carry forward their historical lease classification. Schlumberger’s leasing activities primarily consist of operating leases for administrative offices, manufacturing facilities, research centers, service centers, sales offices and certain equipment. Total operating lease expense, which approximates cash paid and includes short-term leases, was $1.7 billion in each of 2019 Maturities of operating lease liabilities as of December 31, 2019 were as follows: (Stated in millions) 2020 $ 510 2021 276 2022 188 2023 152 2024 124 Thereafter 332 Total lease payments $ 1,582 Less: Interest (171 ) $ 1,411 Amounts recognized in Balance Sheet Accounts payable and accrued liabilities $ 494 Other Liabilities 917 $ 1,411 Operating lease assets of $1.3 billion and $1.8 billion as of December 31, 2019 and 2018, respectively, were included in Other Assets Consolidated Balance Sheet Accounts payable and accrued liabilities Other Liabilities Consolidated Balance Sheet. The weighted-average remaining lease term as of December 31, 2019 was 7 years. The weighted-average discount rate used to determine the operating lease liability as of December 31, 2019 was 3.2%.

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Contingencies	15. Contingencies Schlumberger is party to various legal proceedings from time to time. A liability is accrued when a loss is both probable and can be reasonably estimated. Management believes that the probability of a material loss with respect to any currently pending legal proceeding is remote. However, litigation is inherently uncertain and it is not possible to predict the ultimate disposition of any of these proceedings.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
Segment Information	16. Segment Information Schlumberger’s segments are as follows: • Reservoir Characterization – Consists of the principal Technologies involved in finding and defining hydrocarbon resources. These include WesternGeco, Wireline, Testing Services, Software Integrated Solutions, OneSurface and Integrated Services Management. • Drilling – Consists of the principal Technologies involved in the drilling and positioning of oil and gas wells. These include Bits & Drilling Tools, M-I SWACO, Drilling & Measurements, Land Rigs and Integrated Drilling Services. • Production – Consists of the principal Technologies involved in the lifetime production of oil and gas reservoirs. These include Well Services, OneStim, Completions, Artificial Lift and Asset Performance Solutions. • Cameron – Consists of the principal Technologies involved in pressure and flow control for drilling and intervention rigs, oil and gas wells and production facilities. These include OneSubsea, Surface Systems, Drilling Systems and Valves & Process Systems. Financial information for the years ended December 31, 2019, 2018 and 2017, by segment, is as follows: (Stated in millions) 2019 Depreciation Income and Capital Revenue Before Taxes Assets Amortization Expenditures Reservoir Characterization $ 6,312 $ 1,327 $ 3,909 $ 643 $ 307 Drilling 9,721 1,216 5,724 540 616 Production 11,987 993 10,289 1,540 551 Cameron 5,336 613 4,102 233 166 Eliminations & other (439 ) (171 ) 1,414 216 84 3,978 Goodwill and intangible assets 23,130 Cash and short term investments 2,167 All other assets 5,577 Corporate & other (1) (957 ) 417 Interest income (2) 33 Interest expense (3) (571 ) Charges & credits (4) (12,901 ) $ 32,917 $ (10,418 ) $ 56,312 $ 3,589 $ 1,724 50 (Stated in millions) 2018 Depreciation Income and Capital Revenue Before Taxes Assets Amortization Expenditures Reservoir Characterization $ 6,173 $ 1,347 $ 4,306 $ 667 $ 296 Drilling 9,250 1,239 5,843 597 718 Production 12,394 1,052 12,625 1,417 886 Cameron 5,520 653 4,138 247 152 Eliminations & other (522 ) (104 ) 1,460 189 108 4,187 Goodwill and intangible assets 33,658 Cash and short term investments 2,777 All other assets 5,700 Corporate & other (1) (937 ) 439 Interest income (2) 52 Interest expense (3) (537 ) Charges & credits (4) (141 ) $ 32,815 $ 2,624 $ 70,507 $ 3,556 $ 2,160 (Stated in millions) 2017 Depreciation Income and Capital Revenue Before Taxes Assets Amortization Expenditures Reservoir Characterization $ 6,476 $ 1,184 $ 4,714 $ 981 $ 304 Drilling 8,392 1,151 5,513 697 629 Production 10,630 936 12,450 1,240 889 Cameron 5,524 792 4,156 268 151 Eliminations & other (582 ) (142 ) 1,665 213 134 3,921 Goodwill and intangible assets 34,472 Cash, short term investments and fixed income investments 5,089 All other assets 3,928 Corporate & other (1) (934 ) 438 Interest income (2) 107 Interest expense (3) (513 ) Charges & credits (4) (3,764 ) $ 30,440 $ (1,183 ) $ 71,987 $ 3,837 $ 2,107 (1) Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets (including intangible asset amortization expense resulting from the 2016 acquisition of Cameron), certain centrally managed initiatives and other nonoperating items. (2) Interest income excludes amounts which are included in the segments’ income (2019: $8 million; 2018: $8 million; 2017: $21 million). (3) Interest expense excludes amounts which are included in the segments’ income (2019: $38 million; 2018: $38 million; 2017: $53 million). (4) See Note 3 – Charges and Credits . Segment assets consist of receivables, inventories, fixed assets, multiclient seismic data and APS investments. 51 Depreciation and amortization includes depreciation of property, plant and equipment and amortization of intangible assets, multiclient seismic data costs and APS investments . Revenue by geographic area for the years ended December 31, 2019, 2018 and 2017 is as follows: (Stated in millions) 2019 2018 2017 North America $ 10,843 $ 11,984 $ 9,487 Latin America 4,149 3,745 3,976 Europe/CIS/Africa 7,683 7,158 7,072 Middle East & Asia 10,017 9,543 9,394 Eliminations & other 225 385 511 $ 32,917 $ 32,815 $ 30,440 Revenue is based on the location where services are provided and products are sold. During each of the three years ended December 31, 2019, 2018 and 2017, 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 2019, 2018 and 2017 was $9.3 billion, $10.1 billion and $8.1 billion, respectively. North America and International revenue disaggregated by segment was as follows: (Stated in millions) 2019 North America International Eliminations & other Total Reservoir Characterization $ 1,027 $ 5,263 $ 22 $ 6,312 Drilling 2,220 7,294 207 9,721 Production 5,336 6,647 4 11,987 Cameron 2,318 2,975 43 5,336 Other (58 ) (330 ) (51 ) (439 ) $ 10,843 $ 21,849 $ 225 $ 32,917 (Stated in millions) 2018 North America International Eliminations & other Total Reservoir Characterization $ 992 $ 5,031 $ 150 $ 6,173 Drilling 2,332 6,684 234 9,250 Production 6,312 6,077 5 12,394 Cameron 2,427 3,007 86 5,520 Other (79 ) (353 ) (90 ) (522 ) $ 11,984 $ 20,446 $ 385 $ 32,815 52 Fixed Assets less accumulated depreciation by geographic area are as follows: (Stated in millions) 2019 2018 North America $ 3,646 $ 5,715 Latin America 824 898 Europe/CIS/Africa 2,258 2,364 Middle East & Asia 2,453 2,604 Unallocated 89 98 $ 9,270 $ 11,679

Pension and Other Benefit Plans

Pension and Other Benefit Plans	12 Months Ended
	Dec. 31, 2019
Compensation And Retirement Disclosure [Abstract]
Pension and Other Benefit Plans	17. 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 US 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 hired prior to July 1, 2014 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 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 2019 2018 2017 2019 2018 2017 Discount rate 4.30 % 3.70 % 4.20 % 4.00 % 3.55 % 4.13 % Compensation increases 4.00 % 4.00 % 4.00 % 4.83 % 4.81 % 4.81 % Return on plan assets 6.60 % 7.25 % 7.25 % 7.22 % 7.40 % 7.40 % Net pension cost (credit) for 2019, 2018 and 2017 included the following components: (Stated in millions) US International 2019 2018 2017 2019 2018 2017 Service cost - benefits earned during the period $ 49 $ 59 $ 57 $ 112 $ 138 $ 95 Interest cost on projected benefit obligation 180 167 175 333 304 306 Expected return on plan assets (232 ) (248 ) (242 ) (592 ) (584 ) (541 ) Amortization of prior service cost 10 13 12 7 10 97 Amortization of net loss 29 47 39 70 140 120 Settlement charge 37 - - - - - $ 73 $ 38 $ 41 $ (70 ) $ 8 $ 77 53 See Note 3 - Charges and Credits 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 2019 2018 2019 2018 Discount rate 3.30 % 4.30 % 3.27 % 4.00 % Compensation increases 4.00 % 4.00 % 4.83 % 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 2019 2018 2019 2018 Change in Projected Benefit Obligations Projected benefit obligation at beginning of year $ 4,278 $ 4,603 $ 8,111 $ 8,752 Service cost 49 59 112 138 Interest cost 180 167 333 304 Contribution by plan participants - - 63 79 Actuarial (gains) losses 535 (349 ) 1,304 (758 ) Currency effect - - 50 (87 ) Settlement (240 ) - (17 ) - Benefits paid (209 ) (202 ) (309 ) (317 ) Projected benefit obligation at end of year $ 4,593 $ 4,278 $ 9,647 $ 8,111 Change in Plan Assets Plan assets at fair value at beginning of year $ 3,748 $ 4,058 $ 7,872 $ 8,507 Actual return on plan assets 931 (112 ) 1,676 (370 ) Currency effect - - 59 (105 ) Company contributions 6 4 19 78 Contributions by plan participants - - 63 79 Settlement (240 ) - (17 ) - Benefits paid (209 ) (202 ) (309 ) (317 ) Plan assets at fair value at end of year $ 4,236 $ 3,748 $ 9,363 $ 7,872 Unfunded Liability $ (357 ) $ (530 ) $ (284 ) $ (239 ) Amounts Recognized in Balance Sheet Postretirement Benefits $ (357 ) $ (530 ) $ (602 ) $ (514 ) Other Assets - - 318 275 $ (357 ) $ (530 ) $ (284 ) $ (239 ) Amounts Recognized in Accumulated Other Comprehensive Loss Actuarial losses $ 622 $ 852 $ 1,638 $ 1,440 Prior service cost 9 18 - 9 $ 631 $ 870 $ 1,638 $ 1,449 Accumulated benefit obligation $ 4,345 $ 4,070 $ 9,376 $ 7,895 54 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 (“ABO”) represents the actuarial present value of benefits based on employee service and compensation, but does not include an assumption about future compensation levels. Actuarial losses arising during 2019 are primarily attributable to the decrease in the discount rate used to determine the PBO. As of December 31, 2019, the PBO and fair value of plan assets for plans with PBOs in excess of plan assets were $12.6 billion and $11.7 billion, respectively. The related ABO for these plans was $12.2 billion at December 31, 2019. The weighted-average allocation of plan assets and the target allocations by asset category are as follows: US International Target 2019 2018 Target 2019 2018 Equity securities 20 - 30 % 22 % 21 % 47 - 59 % 50 % 50 Debt securities 63 - 77 70 70 27 - 33 31 32 Cash and cash equivalents 0 - 3 2 2 0 - 5 4 2 Alternative investments 5 - 10 6 7 15 - 22 15 16 100 % 100 % 100 % 100 % 100 % 100 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 The expected rate of return on assets assumptions reflect the long-term 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, 2019 and 2018, 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. 55 (Stated in millions) US Plan Assets 2019 2018 Level Level Level Level Level Level Total One Two Three Total One Two Three Asset Category: Cash and Cash Equivalents $ 73 $ 59 $ 14 $ - $ 80 $ 44 $ 36 $ - Equity Securities: US (a) 605 500 105 - 501 416 85 - International (b) 320 315 5 - 267 263 4 - Debt Securities Corporate bonds (c) 1,687 - 1,687 - 1,517 - 1,517 - Government and government-related debt securities (d) 1,256 74 1,182 - 1,072 66 1,006 - Collateralized mortgage obligations and mortgage backed securities (e) 21 - 21 - 40 - 40 - Alternative Investments: Private equity (f) 181 - - 181 185 - - 185 Real estate (g) 93 - - 93 86 - - 86 Total $ 4,236 $ 948 $ 3,014 $ 274 $ 3,748 $ 789 $ 2,688 $ 271 (Stated in millions) International Plan Assets 2019 2018 Level Level Level Level Level Level Total One Two Three Total One Two Three Asset Category: Cash and Cash Equivalents $ 351 $ 166 $ 185 $ - $ 157 $ 75 $ 82 $ - Equity Securities: US (a) 2,834 2,347 487 - 2,421 2,028 393 - International (b) 1,871 1,723 148 - 1,526 1,406 120 - Debt Securities Corporate bonds (c) 1,105 - 1,105 - 923 - 923 - Government and government-related debt securities (d) 1,602 5 1,597 - 1,377 5 1,372 - Collateralized mortgage obligations and mortgage backed securities (e) 161 - 161 - 236 - 236 - Alternative Investments: Private equity (f) 623 - - 623 565 - - 565 Real estate (g) 183 - - 183 150 - - 150 Other 633 - - 633 517 - - 517 Total $ 9,363 $ 4,241 $ 3,683 $ 1,439 $ 7,872 $ 3,514 $ 3,126 $ 1,232 (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. 56 (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 funds of funds. (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 expects to contribute approximately $20 million to its postretirement benefit plans in 2020, subject to market and business conditions. Postretirement Benefits Other Than Pensions Schlumberger provides certain healthcare benefits to certain former US employees who have retired. Effective April 1, 2015, Schlumberger changed the way it provides healthcare coverage to certain retirees who are age 65 and over. Under the amended plan, these retirees transferred to individual coverage under the Medicare Exchange. Schlumberger subsidizes the cost of the program by providing these retirees with a Health Reimbursement Account. The annual subsidy may be increased based on medical cost inflation, but it will not be increased by more than 5% in any given year. 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 Obligations Net Periodic Benefit At December 31, Cost for the Year 2019 2018 2019 2018 2017 Discount rate 3.30 % 4.30 % 4.30 % 3.70 % 4.20 % Return on plan assets - - 7.00 % 7.00 % 7.00 % Current medical cost trend rate 7.50 % 7.50 % 7.50 % 7.00 % 7.25 % Ultimate medical cost trend rate 4.50 % 4.50 % 4.50 % 5.00 % 5.00 % Year that the rate reaches the ultimate trend rate 2031 2031 2031 2026 2026 The net periodic benefit credit for the US postretirement medical plan included the following components: (Stated in millions) 2019 2018 2017 Service cost $ 29 $ 32 $ 29 Interest cost 45 43 46 Expected return on plan assets (64 ) (63 ) (60 ) Amortization of prior service credit (28 ) (28 ) (29 ) $ (18 ) $ (16 ) $ (14 ) 57 The changes in the accumulated postretirement benefit obligation, plan assets and funded status were as follows: (Stated in millions) 2019 2018 Change in Projected Benefit Obligations Benefit obligation at beginning of year $ 1,106 $ 1,213 Service cost 29 32 Interest cost 45 43 Contribution by plan participants 8 8 Actuarial (gains) losses 65 (128 ) Benefits paid (60 ) (62 ) Benefit obligation at end of year $ 1,193 $ 1,106 Change in Plan Assets Plan assets at fair value at beginning of year $ 997 $ 1,094 Actual return on plan assets 240 (44 ) Company contributions - 1 Contributions by plan participants 8 8 Benefits paid (60 ) (62 ) Plan assets at fair value at end of year $ 1,185 $ 997 Unfunded Liability $ (8 ) $ (109 ) Amounts Recognized in Accumulated Other Comprehensive Loss Actuarial (gains) losses $ (98 ) $ 14 Prior service credit (158 ) (186 ) $ (256 ) $ (172 ) The unfunded liability is included in Postretirement Benefits Consolidated Balance Sheet The assets of the US postretirement medical plan are invested 60% in equity securities and 40% in debt securities at December 31, 2019. The fair value of these assets was primarily determined based on Level Two valuation techniques. Other Information The expected benefits to be paid under the US and International pension plans as well as the postretirement medical plan are as follows: (Stated in millions) Pension Benefits Postretirement US International Medical Plan 2020 $ 218 $ 333 $ 52 2021 $ 221 $ 343 $ 54 2022 $ 225 $ 353 $ 55 2023 $ 229 $ 365 $ 56 2024 $ 233 $ 366 $ 57 2025-2029 $ 1,213 $ 2,057 $ 317 In addition to providing defined pension benefits and a postretirement medical plan, Schlumberger has other deferred benefit programs, primarily profit sharing and defined contribution pension plans. Expenses for these programs were $410 million, $435 million and $413 million in 2019, 2018 and 2017, respectively.

Supplementary Information

Supplementary Information	12 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
Supplementary Information	18. Supplementary Information Cash paid (refunded) for interest and income taxes was as follows: (Stated in millions) 2019 2018 2017 Interest $ 558 $ 592 $ 572 Income tax $ 739 $ 628 $ (44 ) Interest and other income includes the following: (Stated in millions) 2019 2018 2017 Interest income $ 41 $ 60 $ 128 Earnings of equity method investments 45 89 96 $ 86 $ 149 $ 224 The change in Allowance for doubtful accounts (Stated in millions) 2019 2018 2017 Balance at beginning of year $ 249 $ 241 $ 397 Additions 5 15 7 Amounts written off 1 (7 ) (163 ) Balance at end of year $ 255 $ 249 $ 241 Revenue in excess of billings related to contracts where revenue is recognized over time was $0.2 billion Receivables less allowance for doubtful accounts Consolidated Balance Sheet Accounts payable and accrued liabilities consist of the following: (Stated in millions) 2019 2018 Trade $ 4,790 $ 4,709 Payroll, vacation and employee benefits 1,293 1,244 Billings and cash collections in excess of revenue 910 877 Other 3,670 3,393 $ 10,663 $ 10,223

Summary of Accounting Policies

Summary of Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Use of Estimates	Use of Estimates The preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the 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 ongoing basis, Schlumberger evaluates its estimates, including those related to collectibility of accounts receivable; revenue recognized for certain long-term construction-type contracts over time; recoverability of fixed assets, goodwill, intangible assets, Asset Performance Solutions investments 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 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 adopted Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers Consolidated Financial Statements Schlumberger recognizes revenue upon the transfer of control of promised products or services to customers at an amount that reflects the consideration it expects to receive in exchange for these products or services. The vast majority of Schlumberger’s services and product offerings are short-term in nature. The time between invoicing and when payment is due under these arrangements is generally between 30 to 60 days. Revenue is occasionally generated from contractual arrangements that include multiple performance obligations. Revenue from these arrangements is allocated to each performance obligation based on its relative standalone selling price. Standalone selling prices are generally determined based on the prices charged to customers or using expected costs plus margin. Revenue is recognized for certain long-term construction-type contracts over time. These contracts involve significant design and engineering efforts in order to satisfy custom designs for customer-specific applications. Revenue is recognized as work progresses on each contract. Progress is measured by the ratio of actual costs incurred to date on the project in relation to total estimated project costs. The estimate of total project costs has a significant impact on both the amount of revenue recognized as well as the related profit on a project. Revenue and profits on contracts can also be significantly affected by change orders and claims. Due to the nature of these projects, adjustments to estimates of contract revenue and total contract costs may be required as work progresses. Progress billings are generally issued upon completion of certain phases of work as stipulated in the contract. Any expected losses on a project are recorded in full in the period in which they become probable. Due to the nature of its businesses, Schlumberger does not have significant backlog. Total backlog was $3.0 billion at December 31, 2019, of which approximately 50% is expected to be recognized as revenue during 2020.
Short-term and Investments	Short-term Investments Short-term investments are comprised primarily of money market funds, time deposits, certificates of deposit, commercial paper, bonds and notes, substantially all of which are denominated in US dollars and are stated at cost plus accrued interest, which approximates fair value. For purposes of the Consolidated Statement of Cash Flows Short-term investments
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 Equity and cost method investments are classified as Investments in Affiliated Companies Consolidated Balance Sheet
Multiclient Seismic Data	Multiclient Seismic Data Schlumberger’s 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 services 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 involve 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.
Asset Performance Solutions	Asset Performance Solutions Asset Performance Solutions (“APS”), formerly Schlumberger Production Management, projects are focused on developing and managing production on behalf of Schlumberger’s clients under long-term agreements. Schlumberger will invest its own services and products, and historically, cash in certain cases, into the field development activities and operations. Although in certain arrangements Schlumberger is paid for a portion of the services or products it provides, generally Schlumberger will not be paid at the time of providing its services or upon delivery of its products. Instead, Schlumberger is compensated based upon cash flow generated or on a fee-per-barrel basis. This includes certain arrangements whereby Schlumberger is only compensated based upon incremental production it helps deliver above a mutually agreed baseline. Revenue from APS arrangements, which is recognized as the related production is achieved, represented less than 5% of Schlumberger’s consolidated revenue during each of 2019, 2018 and 2017. Schlumberger capitalizes its cash investments in a project as well as the direct costs associated with providing services or products for which Schlumberger will be compensated when the related production is achieved. These capitalized investments are amortized to the Consolidated Statement of Income (Loss) The unamortized portion of Schlumberger’s investments in APS projects was $3.724 billion and $4.201 billion at December 31, 2019 and 2018, respectively. These amounts are included within Other Assets Consolidated Balance Sheet.
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, receivables from clients and derivative financial instruments. Schlumberger places its cash and short-term investments 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. By using derivative financial instruments to hedge certain exposures, 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. Schlumberger generates revenue in more than 120 countries and as such, its accounts receivable are spread over many countries and customers. Accounts receivable in the United States represented 18% of Schlumberger’s accounts receivable balance at December 31, 2019. No other country accounted for greater than 10% of Schlumberger’s accounts receivable balance.
Earnings per Share	Earnings per Share The following is a reconciliation from basic to diluted earnings (loss) per share of Schlumberger for each of the last three years: (Stated in millions, except per share amounts) Net Income (Loss) Attributable to Schlumberger Average Shares Outstanding Earnings (Loss) per Share 2019: Basic $ (10,137 ) 1,385 $ (7.32 ) Assumed exercise of stock options - - Unvested restricted stock - - Diluted $ (10,137 ) 1,385 $ (7.32 ) 2018: Basic $ 2,138 1,385 $ 1.54 Assumed exercise of stock options - - Unvested restricted stock - 8 Diluted $ 2,138 1,393 $ 1.53 2017: Basic $ (1,505 ) 1,388 $ (1.08 ) Assumed exercise of stock options - - Unvested restricted stock - - Diluted $ (1,505 ) 1,388 $ (1.08 ) The number of outstanding employee stock options to purchase shares of Schlumberger common stock and unvested restricted stock units that were not included in the computation of diluted earnings/loss per share, because to do so would have had an anti-dilutive effect, were as follows: (Stated in millions) 2019 2018 2017 Employee stock options 46 40 47 Unvested restricted stock 12 - 5
Reclassifications	Reclassifications Certain prior period amounts have been reclassified to conform to the current period presentation.

Summary of Accounting Policie_2

Summary of Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Reconciliation of Earnings Per Share	The following is a reconciliation from basic to diluted earnings (loss) per share of Schlumberger for each of the last three years: (Stated in millions, except per share amounts) Net Income (Loss) Attributable to Schlumberger Average Shares Outstanding Earnings (Loss) per Share 2019: Basic $ (10,137 ) 1,385 $ (7.32 ) Assumed exercise of stock options - - Unvested restricted stock - - Diluted $ (10,137 ) 1,385 $ (7.32 ) 2018: Basic $ 2,138 1,385 $ 1.54 Assumed exercise of stock options - - Unvested restricted stock - 8 Diluted $ 2,138 1,393 $ 1.53 2017: Basic $ (1,505 ) 1,388 $ (1.08 ) Assumed exercise of stock options - - Unvested restricted stock - - Diluted $ (1,505 ) 1,388 $ (1.08 )
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The number of outstanding employee stock options to purchase shares of Schlumberger common stock and unvested restricted stock units that were not included in the computation of diluted earnings/loss per share, because to do so would have had an anti-dilutive effect, were as follows: (Stated in millions) 2019 2018 2017 Employee stock options 46 40 47 Unvested restricted stock 12 - 5

Charges and Credits (Tables)

Charges and Credits (Tables)	12 Months Ended
	Dec. 31, 2019
Restructuring And Related Activities [Abstract]
Summary of Charges and Credits	Schlumberger recorded the following charges and credits during 2019, all of which are classified as Impairments & other Consolidated Statement of Income (Loss) (Stated in millions) Pretax Tax Net Fourth quarter: North America restructuring $ 225 $ 51 $ 174 Other restructuring 104 (33 ) 137 Workforce reductions 68 8 60 Pension settlement accounting 37 8 29 Repurchase of bonds 22 5 17 Gain on formation of Sensia joint venture (247 ) (42 ) (205 ) Third quarter: Goodwill impairment 8,828 43 8,785 Intangible assets impairment 1,085 248 837 North America pressure pumping 1,575 344 1,231 Other North America-related 310 53 257 Argentina 127 - 127 Equity-method investments 231 12 219 Asset Performance Solutions 294 - 294 Other 242 13 229 $ 12,901 $ 710 $ 12,191 During 2018, Schlumberger recorded the following charges and credits: (Stated in millions) Pretax Tax Net Gain on sale of marine seismic acquisition business $ (215 ) $ (19 ) $ (196 ) Workforce reductions 184 20 164 Asset impairments 172 16 156 $ 141 $ 17 $ 124 Schlumberger recorded the following charges and credits during 2017, of which $3.211 billion were classified as Impairments & other Cost of sales Merger & integration Consolidated Statement of Income (Loss) (Stated in millions) Noncontrolling Pretax Tax Interests Net Impairment & other WesternGeco seismic restructuring charges $ 1,114 $ 20 $ - $ 1,094 Venezuela investment write-down 938 - - 938 Promissory note fair value adjustment and other 510 - 12 498 Workforce reductions 247 13 - 234 Multiclient seismic data impairment 246 81 - 165 Other restructuring charges 156 10 22 124 Cost of sales - - Provision for loss on long-term construction project 245 22 - 223 Merger & integration - - Merger and integration-related costs 308 70 - 238 US tax reform charge - (76 ) - 76 $ 3,764 $ 140 $ 34 $ 3,590

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2019
Inventory Disclosure [Abstract]
Summary of Inventory	Inventories, which are stated at the lower of average cost or net realizable value, consist of the following: (Stated in millions) 2019 2018 Raw materials & field materials $ 1,857 $ 1,803 Work in progress 515 519 Finished goods 1,758 1,688 $ 4,130 $ 4,010

Fixed Assets (Tables)

Fixed Assets (Tables)	12 Months Ended
	Dec. 31, 2019
Property Plant And Equipment [Abstract]
Summary of Fixed Assets	Fixed assets consist of the following: (Stated in millions) 2019 2018 Land $ 483 $ 462 Buildings & improvements 5,156 5,534 Machinery & equipment 29,370 32,668 35,009 38,664 Less: Accumulated depreciation 25,739 26,985 $ 9,270 $ 11,679

Multiclient Seismic Data (Table

Multiclient Seismic Data (Tables)	12 Months Ended
	Dec. 31, 2019
Multiclient Seismic Data [Abstract]
Change in Carrying Amount of Multiclient Seismic Data	The change in the carrying amount of multiclient seismic data is as follows: (Stated in millions) 2019 2018 Balance at beginning of year $ 601 $ 727 Capitalized in period 231 100 Charged to expense (264 ) (226 ) $ 568 $ 601

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill by segment were as follows: (Stated in millions) Reservoir Characterization Drilling Production Cameron Total Balance, January 1, 2018 $ 4,848 $ 10,126 $ 4,697 $ 5,447 $ 25,118 Acquisitions 39 - - - 39 Business divestiture (175 ) - - - (175 ) Impact of changes in exchange rates (9 ) (15 ) (19 ) (8 ) (51 ) Balance, December 31, 2018 4,703 10,111 4,678 5,439 24,931 Impairment (97 ) (3,025 ) (705 ) (5,001 ) (8,828 ) Impact of changes in exchange rates and other (46 ) 6 (24 ) 3 (61 ) Balance, December 31, 2019 $ 4,560 $ 7,092 $ 3,949 $ 441 $ 16,042

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets by Major Class	Intangible assets consist of the following: (Stated in millions) 2019 2018 Gross Accumulated Net Book Gross Accumulated Net Book Book Amortization Value Book Value Amortization Value Customer Relationships $ 3,779 $ 868 $ 2,911 $ 4,768 $ 1,243 $ 3,525 Technology/Technical Know-How 2,498 779 1,719 3,494 1,246 2,248 Tradenames 1,885 264 1,621 2,799 628 2,171 Other 1,514 676 838 1,404 621 783 $ 9,676 $ 2,587 $ 7,089 $ 12,465 $ 3,738 $ 8,727

Long-term Debt and Debt Facil_2

Long-term Debt and Debt Facility Agreements (Tables)	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Long-term Debt	Long-term Debt consists of the following: (Stated in millions) 2019 2018 3.30% Senior Notes due 2021 $ 1,597 $ 1,596 3.65% Senior Notes due 2023 1,495 1,493 3.90% Senior Notes due 2028 1,444 - 2.40% Senior Notes due 2022 998 997 4.00% Senior Notes due 2025 929 1,742 4.3% Senior Notes due 2029 845 - 3.75% Senior Notes due 2024 746 - 1.00% Guaranteed Notes due 2026 665 678 4.20% Senior Notes due 2021 600 1,100 2.65% Senior Notes due 2022 598 598 0.00% Notes due 2024 551 - 0.25% Notes due 2027 550 - 0.50% Notes due 2031 544 - 3.63% Senior Notes due 2022 294 847 7.00% Notes due 2038 208 210 5.95% Notes due 2041 114 115 5.13% Notes due 2043 99 99 4.00% Notes due 2023 81 82 3.70% Notes due 2024 55 55 3.00% Senior Notes due 2020 - 1,596 2.20% Senior Notes due 2020 - 499 4.50% Notes due 2021 - 132 3.60% Notes due 2022 - 109 Commercial paper borrowings 2,222 2,433 Other 135 263 $ 14,770 $ 14,644

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2019
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Effect of Derivative Instruments Designated as Fair Value Hedges and Not Designated as Hedges on Consolidated Statement of Income (Loss)	The effect of derivative instruments designated as hedges and those not designated as hedges on the Consolidated Statement of Income (Loss) (Stated in millions) Gain (Loss) Recognized in Income (Loss) Consolidated Statement 2019 2018 2017 of Income (Loss) Classification Derivatives designated as fair value hedges: Cross currency swap $ - $ (25 ) $ 73 Interest expense Derivatives designated as cash flow hedges: Cross currency swap $ (35 ) $ 80 $ (8 ) Interest expense Foreign exchange contracts (10 ) (1 ) - Cost of services/sales $ (45 ) $ 79 $ (8 ) Derivatives not designated as hedges: Foreign exchange contracts $ (5 ) $ 40 $ (26 ) Cost of services/sales

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss consists of the following: (Stated in millions) Pension and Currency Other Translation Marketable Cash Flow Postretirement Adjustments Securities Hedges Benefit Plans Total Balance, January 1, 2017 $ (2,136 ) $ 21 $ (19 ) $ (2,509 ) $ (4,643 ) Other comprehensive income (loss) before reclassifications (3 ) (8 ) 22 134 145 Amounts reclassified from accumulated other comprehensive loss - - - 239 239 Income taxes - - - (15 ) (15 ) Balance, December 31, 2017 (2,139 ) 13 3 (2,151 ) (4,274 ) Reclassification to Retained Earnings - - - (109 ) (109 ) Other comprehensive loss before reclassifications (191 ) (11 ) (16 ) (186 ) (404 ) Amounts reclassified from accumulated other comprehensive loss - - 1 182 183 Income taxes - - - (18 ) (18 ) Balance, December 31, 2018 (2,330 ) 2 (12 ) (2,282 ) (4,622 ) Other comprehensive loss before reclassifications 67 - (32 ) 127 162 Amounts reclassified from accumulated other comprehensive loss - - 10 83 93 Income taxes - - - (71 ) (71 ) Balance, December 31, 2019 $ (2,263 ) $ 2 $ (34 ) $ (2,143 ) $ (4,438 )

Stock-based Compensation Plans

Stock-based Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Weighted Average Assumptions Used in Estimating Fair Value of Stock Options	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: 2019 2018 2017 Dividend yield 4.8 % 2.6 % 2.3 % Expected volatility 25 % 26 % 27 % Risk-free interest rate 2.7 % 2.6 % 2.4 % Expected option life in years 7.0 7.0 7.0 Weighted-average fair value per share $ 6.21 $ 17.37 $ 20.85
Options Outstanding and Option Exercisable	The following table summarizes information related to options outstanding and options exercisable as of December 31, 2019: (Shares stated in thousands) Options Outstanding Options Exercisable Weighted- Average Remaining Weighted- Weighted- Options Contractual Life Average Options Average Exercise prices range Outstanding (in years) Exercise Price Exercisable Exercise Price $41.47 - $69.98 11,307 5.6 $ 53.99 5,343 $ 65.01 $70.92 - $76.74 10,202 3.0 $ 72.11 9,958 $ 72.17 $77.10 - $83.15 7,714 6.4 $ 79.32 4,257 $ 79.62 $84.22 - $88.77 9,210 3.8 $ 85.88 6,885 $ 85.38 $91.28 - $114.83 7,836 4.4 $ 95.86 7,160 $ 96.25 46,269 4.6 $ 75.65 33,603 $ 77.77
Summary of Stock Option Activity	The following table summarizes stock option activity during the years ended December 31, 2019, 2018 and 2017: (Shares stated in thousands) 2019 2018 2017 Weighted- Weighted- Weighted- Average Average Average Exercise Exercise Exercise Shares Price Shares Price Shares Price Outstanding at beginning of year 43,529 $ 79.36 47,210 $ 79.13 46,502 $ 78.31 Granted 5,604 $ 41.50 2,121 $ 76.95 5,024 $ 86.55 Exercised (1,045 ) $ 38.50 (936 ) $ 54.20 (1,156 ) $ 57.87 Forfeited (1,819 ) $ 74.69 (4,866 ) $ 84.19 (3,160 ) $ 86.99 Outstanding at year-end 46,269 $ 75.65 43,529 $ 79.36 47,210 $ 79.13
Restricted Stock Transactions	The following table summarizes information related to restricted stock transactions: (Shares stated in thousands) 2019 2018 2017 Weighted- Weighted- Weighted- Average Average Average Restricted Grant Date Restricted Grant Date Restricted Grant Date Stock Fair Value Stock Fair Value Stock Fair Value Unvested at beginning of year 6,951 $ 70.13 5,428 $ 72.33 5,112 $ 78.31 Granted 7,888 $ 35.56 3,204 $ 70.54 2,495 $ 73.09 Vested (2,722 ) $ 72.09 (982 ) $ 77.62 (1,645 ) $ 83.03 Forfeited (295 ) $ 57.41 (699 ) $ 70.67 (534 ) $ 80.17 Unvested at year-end 11,822 $ 49.86 6,951 $ 70.13 5,428 $ 72.33
Assumptions Used in Estimating Fair Value of Purchase Rights under Discounted Stock Purchase Plan	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: 2019 2018 2017 Dividend yield 5.3 % 2.9 % 2.7 % Expected volatility 30 % 22 % 19 % Risk-free interest rate 2.3 % 1.6 % 1.0 % Weighted-average fair value per share $ 5.81 $ 9.01 $ 9.46
Stock-Based Compensation Expense Recognized in Income	The following summarizes stock-based compensation expense recognized in income: (Stated in millions) 2019 2018 2017 Stock options $ 99 $ 134 $ 161 Restricted stock 274 179 148 DSPP 32 32 34 $ 405 $ 345 $ 343

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income (Loss) Before Taxes	Income (loss) before taxes subject to United States and non-United States income taxes was as follows: (Stated in millions) 2019 2018 2017 United States $ (8,991 ) $ (55 ) $ (841 ) Outside United States (1,427 ) 2,679 (342 ) $ (10,418 ) $ 2,624 $ (1,183 )
Components of Net Deferred Tax Assets (Liabilities)	The components of net deferred tax assets (liabilities) were as follows: (Stated in millions) 2019 2018 Postretirement benefits $ 51 $ 122 Intangible assets (1,833 ) (2,110 ) Investments in non-US subsidiaries (220 ) (223 ) Fixed assets, net 434 (140 ) Inventories 155 111 Foreign tax credits 312 343 Other, net 610 456 $ (491 ) $ (1,441 )
Components of Tax Expense (Benefit)	The components of Tax expense (benefit) (Stated in millions) 2019 2018 2017 Current: United States-Federal $ (81 ) $ 124 $ (170 ) United States-State 11 (50 ) 57 Outside United States 770 618 703 700 692 590 Deferred: United States-Federal $ (660 ) $ (143 ) $ (225 ) United States-State (93 ) (4 ) 4 Outside United States (257 ) (69 ) (47 ) Valuation allowance (1 ) (29 ) 8 (1,011 ) (245 ) (260 ) $ (311 ) $ 447 $ 330
Reconciliation of US Statutory Federal Tax Rate	A reconciliation of the United States statutory federal tax rate to the consolidated effective tax rate follows: 2019 2018 2017 US federal statutory rate 21 % 21 % 35 % State tax - (2 ) - Non-US income taxed at different rates - (2 ) 29 Charges and credits (See Note 3) (19 ) - (93 ) Enactment of US tax reform (See Note 3) - - (6 ) Other 1 - 7 3 % 17 % (28 )%
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, 2019, 2018 and 2017 is as follows: (Stated in millions) 2019 2018 2017 Balance at beginning of year $ 1,433 $ 1,393 $ 1,419 Additions based on tax positions related to the current year 86 88 132 Additions for tax positions of prior years 65 145 58 Impact of changes in exchange rates 2 (41 ) 23 Settlements with tax authorities (50 ) (22 ) (41 ) Reductions for tax positions of prior years (176 ) (57 ) (157 ) Reductions due to the lapse of the applicable statute of limitations (59 ) (73 ) (41 ) $ 1,301 $ 1,433 $ 1,393
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: Canada 2012 - 2019 Ecuador 2016 - 2019 Mexico 2012 - 2019 Norway 2014 - 2019 Russia 2016 - 2019 Saudi Arabia 2015 - 2019 United Kingdom 2017 - 2019 United States 2017 - 2019

Leases and Lease Commitments (T

Leases and Lease Commitments (Tables)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Maturities of Operating Lease Liabilities	Maturities of operating lease liabilities as of December 31, 2019 were as follows: (Stated in millions) 2020 $ 510 2021 276 2022 188 2023 152 2024 124 Thereafter 332 Total lease payments $ 1,582 Less: Interest (171 ) $ 1,411 Amounts recognized in Balance Sheet Accounts payable and accrued liabilities $ 494 Other Liabilities 917 $ 1,411

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Financial information for the years ended December 31, 2019, 2018 and 2017, by segment, is as follows: (Stated in millions) 2019 Depreciation Income and Capital Revenue Before Taxes Assets Amortization Expenditures Reservoir Characterization $ 6,312 $ 1,327 $ 3,909 $ 643 $ 307 Drilling 9,721 1,216 5,724 540 616 Production 11,987 993 10,289 1,540 551 Cameron 5,336 613 4,102 233 166 Eliminations & other (439 ) (171 ) 1,414 216 84 3,978 Goodwill and intangible assets 23,130 Cash and short term investments 2,167 All other assets 5,577 Corporate & other (1) (957 ) 417 Interest income (2) 33 Interest expense (3) (571 ) Charges & credits (4) (12,901 ) $ 32,917 $ (10,418 ) $ 56,312 $ 3,589 $ 1,724 50 (Stated in millions) 2018 Depreciation Income and Capital Revenue Before Taxes Assets Amortization Expenditures Reservoir Characterization $ 6,173 $ 1,347 $ 4,306 $ 667 $ 296 Drilling 9,250 1,239 5,843 597 718 Production 12,394 1,052 12,625 1,417 886 Cameron 5,520 653 4,138 247 152 Eliminations & other (522 ) (104 ) 1,460 189 108 4,187 Goodwill and intangible assets 33,658 Cash and short term investments 2,777 All other assets 5,700 Corporate & other (1) (937 ) 439 Interest income (2) 52 Interest expense (3) (537 ) Charges & credits (4) (141 ) $ 32,815 $ 2,624 $ 70,507 $ 3,556 $ 2,160 (Stated in millions) 2017 Depreciation Income and Capital Revenue Before Taxes Assets Amortization Expenditures Reservoir Characterization $ 6,476 $ 1,184 $ 4,714 $ 981 $ 304 Drilling 8,392 1,151 5,513 697 629 Production 10,630 936 12,450 1,240 889 Cameron 5,524 792 4,156 268 151 Eliminations & other (582 ) (142 ) 1,665 213 134 3,921 Goodwill and intangible assets 34,472 Cash, short term investments and fixed income investments 5,089 All other assets 3,928 Corporate & other (1) (934 ) 438 Interest income (2) 107 Interest expense (3) (513 ) Charges & credits (4) (3,764 ) $ 30,440 $ (1,183 ) $ 71,987 $ 3,837 $ 2,107 (1) Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets (including intangible asset amortization expense resulting from the 2016 acquisition of Cameron), certain centrally managed initiatives and other nonoperating items. (2) Interest income excludes amounts which are included in the segments’ income (2019: $8 million; 2018: $8 million; 2017: $21 million). (3) Interest expense excludes amounts which are included in the segments’ income (2019: $38 million; 2018: $38 million; 2017: $53 million). (4) See Note 3 – Charges and Credits .
Revenue by Geographic Area	Revenue by geographic area for the years ended December 31, 2019, 2018 and 2017 is as follows: (Stated in millions) 2019 2018 2017 North America $ 10,843 $ 11,984 $ 9,487 Latin America 4,149 3,745 3,976 Europe/CIS/Africa 7,683 7,158 7,072 Middle East & Asia 10,017 9,543 9,394 Eliminations & other 225 385 511 $ 32,917 $ 32,815 $ 30,440
Summary of North America and International Revenue Disaggregated by Segment	North America and International revenue disaggregated by segment was as follows: (Stated in millions) 2019 North America International Eliminations & other Total Reservoir Characterization $ 1,027 $ 5,263 $ 22 $ 6,312 Drilling 2,220 7,294 207 9,721 Production 5,336 6,647 4 11,987 Cameron 2,318 2,975 43 5,336 Other (58 ) (330 ) (51 ) (439 ) $ 10,843 $ 21,849 $ 225 $ 32,917 (Stated in millions) 2018 North America International Eliminations & other Total Reservoir Characterization $ 992 $ 5,031 $ 150 $ 6,173 Drilling 2,332 6,684 234 9,250 Production 6,312 6,077 5 12,394 Cameron 2,427 3,007 86 5,520 Other (79 ) (353 ) (90 ) (522 ) $ 11,984 $ 20,446 $ 385 $ 32,815 52
Fixed Assets Less Accumulated Depreciation by Geographic Area	Fixed Assets less accumulated depreciation by geographic area are as follows: (Stated in millions) 2019 2018 North America $ 3,646 $ 5,715 Latin America 824 898 Europe/CIS/Africa 2,258 2,364 Middle East & Asia 2,453 2,604 Unallocated 89 98 $ 9,270 $ 11,679

Pension and Other Benefit Pla_2

Pension and Other Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2019
Compensation And Retirement Disclosure [Abstract]
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 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 2019 2018 2017 2019 2018 2017 Discount rate 4.30 % 3.70 % 4.20 % 4.00 % 3.55 % 4.13 % Compensation increases 4.00 % 4.00 % 4.00 % 4.83 % 4.81 % 4.81 % Return on plan assets 6.60 % 7.25 % 7.25 % 7.22 % 7.40 % 7.40 %
Net Pension Cost (Credit) for Schlumberger Pension Plans and US Postretirement Medical Plan	Net pension cost (credit) for 2019, 2018 and 2017 included the following components: (Stated in millions) US International 2019 2018 2017 2019 2018 2017 Service cost - benefits earned during the period $ 49 $ 59 $ 57 $ 112 $ 138 $ 95 Interest cost on projected benefit obligation 180 167 175 333 304 306 Expected return on plan assets (232 ) (248 ) (242 ) (592 ) (584 ) (541 ) Amortization of prior service cost 10 13 12 7 10 97 Amortization of net loss 29 47 39 70 140 120 Settlement charge 37 - - - - - $ 73 $ 38 $ 41 $ (70 ) $ 8 $ 77 The net periodic benefit credit for the US postretirement medical plan included the following components: (Stated in millions) 2019 2018 2017 Service cost $ 29 $ 32 $ 29 Interest cost 45 43 46 Expected return on plan assets (64 ) (63 ) (60 ) Amortization of prior service credit (28 ) (28 ) (29 ) $ (18 ) $ (16 ) $ (14 )
Weighted-Average Assumed Discount Rate and Compensation Increases Used to Determine Projected Benefit Obligations for US and International Plans	See Note 3 - Charges and Credits 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 2019 2018 2019 2018 Discount rate 3.30 % 4.30 % 3.27 % 4.00 % Compensation increases 4.00 % 4.00 % 4.83 % 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 2019 2018 2019 2018 Change in Projected Benefit Obligations Projected benefit obligation at beginning of year $ 4,278 $ 4,603 $ 8,111 $ 8,752 Service cost 49 59 112 138 Interest cost 180 167 333 304 Contribution by plan participants - - 63 79 Actuarial (gains) losses 535 (349 ) 1,304 (758 ) Currency effect - - 50 (87 ) Settlement (240 ) - (17 ) - Benefits paid (209 ) (202 ) (309 ) (317 ) Projected benefit obligation at end of year $ 4,593 $ 4,278 $ 9,647 $ 8,111 Change in Plan Assets Plan assets at fair value at beginning of year $ 3,748 $ 4,058 $ 7,872 $ 8,507 Actual return on plan assets 931 (112 ) 1,676 (370 ) Currency effect - - 59 (105 ) Company contributions 6 4 19 78 Contributions by plan participants - - 63 79 Settlement (240 ) - (17 ) - Benefits paid (209 ) (202 ) (309 ) (317 ) Plan assets at fair value at end of year $ 4,236 $ 3,748 $ 9,363 $ 7,872 Unfunded Liability $ (357 ) $ (530 ) $ (284 ) $ (239 ) Amounts Recognized in Balance Sheet Postretirement Benefits $ (357 ) $ (530 ) $ (602 ) $ (514 ) Other Assets - - 318 275 $ (357 ) $ (530 ) $ (284 ) $ (239 ) Amounts Recognized in Accumulated Other Comprehensive Loss Actuarial losses $ 622 $ 852 $ 1,638 $ 1,440 Prior service cost 9 18 - 9 $ 631 $ 870 $ 1,638 $ 1,449 Accumulated benefit obligation $ 4,345 $ 4,070 $ 9,376 $ 7,895 54
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 2019 2018 Target 2019 2018 Equity securities 20 - 30 % 22 % 21 % 47 - 59 % 50 % 50 Debt securities 63 - 77 70 70 27 - 33 31 32 Cash and cash equivalents 0 - 3 2 2 0 - 5 4 2 Alternative investments 5 - 10 6 7 15 - 22 15 16 100 % 100 % 100 % 100 % 100 % 100
Fair Value of Schlumberger's Pension Plan Assets	The fair value of Schlumberger’s pension plan assets at December 31, 2019 and 2018, 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. 55 (Stated in millions) US Plan Assets 2019 2018 Level Level Level Level Level Level Total One Two Three Total One Two Three Asset Category: Cash and Cash Equivalents $ 73 $ 59 $ 14 $ - $ 80 $ 44 $ 36 $ - Equity Securities: US (a) 605 500 105 - 501 416 85 - International (b) 320 315 5 - 267 263 4 - Debt Securities Corporate bonds (c) 1,687 - 1,687 - 1,517 - 1,517 - Government and government-related debt securities (d) 1,256 74 1,182 - 1,072 66 1,006 - Collateralized mortgage obligations and mortgage backed securities (e) 21 - 21 - 40 - 40 - Alternative Investments: Private equity (f) 181 - - 181 185 - - 185 Real estate (g) 93 - - 93 86 - - 86 Total $ 4,236 $ 948 $ 3,014 $ 274 $ 3,748 $ 789 $ 2,688 $ 271 (Stated in millions) International Plan Assets 2019 2018 Level Level Level Level Level Level Total One Two Three Total One Two Three Asset Category: Cash and Cash Equivalents $ 351 $ 166 $ 185 $ - $ 157 $ 75 $ 82 $ - Equity Securities: US (a) 2,834 2,347 487 - 2,421 2,028 393 - International (b) 1,871 1,723 148 - 1,526 1,406 120 - Debt Securities Corporate bonds (c) 1,105 - 1,105 - 923 - 923 - Government and government-related debt securities (d) 1,602 5 1,597 - 1,377 5 1,372 - Collateralized mortgage obligations and mortgage backed securities (e) 161 - 161 - 236 - 236 - Alternative Investments: Private equity (f) 623 - - 623 565 - - 565 Real estate (g) 183 - - 183 150 - - 150 Other 633 - - 633 517 - - 517 Total $ 9,363 $ 4,241 $ 3,683 $ 1,439 $ 7,872 $ 3,514 $ 3,126 $ 1,232 (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. 56 (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 funds of funds. (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 Obligations Net Periodic Benefit At December 31, Cost for the Year 2019 2018 2019 2018 2017 Discount rate 3.30 % 4.30 % 4.30 % 3.70 % 4.20 % Return on plan assets - - 7.00 % 7.00 % 7.00 % Current medical cost trend rate 7.50 % 7.50 % 7.50 % 7.00 % 7.25 % Ultimate medical cost trend rate 4.50 % 4.50 % 4.50 % 5.00 % 5.00 % Year that the rate reaches the ultimate trend rate 2031 2031 2031 2026 2026
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) 2019 2018 Change in Projected Benefit Obligations Benefit obligation at beginning of year $ 1,106 $ 1,213 Service cost 29 32 Interest cost 45 43 Contribution by plan participants 8 8 Actuarial (gains) losses 65 (128 ) Benefits paid (60 ) (62 ) Benefit obligation at end of year $ 1,193 $ 1,106 Change in Plan Assets Plan assets at fair value at beginning of year $ 997 $ 1,094 Actual return on plan assets 240 (44 ) Company contributions - 1 Contributions by plan participants 8 8 Benefits paid (60 ) (62 ) Plan assets at fair value at end of year $ 1,185 $ 997 Unfunded Liability $ (8 ) $ (109 ) Amounts Recognized in Accumulated Other Comprehensive Loss Actuarial (gains) losses $ (98 ) $ 14 Prior service credit (158 ) (186 ) $ (256 ) $ (172 )
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 are as follows: (Stated in millions) Pension Benefits Postretirement US International Medical Plan 2020 $ 218 $ 333 $ 52 2021 $ 221 $ 343 $ 54 2022 $ 225 $ 353 $ 55 2023 $ 229 $ 365 $ 56 2024 $ 233 $ 366 $ 57 2025-2029 $ 1,213 $ 2,057 $ 317

Supplementary Information (Tabl

Supplementary Information (Tables)	12 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
Cash Paid (Refunded) for Interest and Income Taxes	Cash paid (refunded) for interest and income taxes was as follows: (Stated in millions) 2019 2018 2017 Interest $ 558 $ 592 $ 572 Income tax $ 739 $ 628 $ (44 )
Interest and Other Income	Interest and other income includes the following: (Stated in millions) 2019 2018 2017 Interest income $ 41 $ 60 $ 128 Earnings of equity method investments 45 89 96 $ 86 $ 149 $ 224
Change in Allowance for Doubtful Accounts	The change in Allowance for doubtful accounts (Stated in millions) 2019 2018 2017 Balance at beginning of year $ 249 $ 241 $ 397 Additions 5 15 7 Amounts written off 1 (7 ) (163 ) Balance at end of year $ 255 $ 249 $ 241
Accounts Payable and Accrued Liabilities	Revenue in excess of billings related to contracts where revenue is recognized over time was $0.2 billion Receivables less allowance for doubtful accounts Consolidated Balance Sheet Accounts payable and accrued liabilities consist of the following: (Stated in millions) 2019 2018 Trade $ 4,790 $ 4,709 Payroll, vacation and employee benefits 1,293 1,244 Billings and cash collections in excess of revenue 910 877 Other 3,670 3,393 $ 10,663 $ 10,223

Summary of Accounting Policie_3

Summary of Accounting Policies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)Country	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Organization And Summary Of Significant Accounting Policies [Line Items]
Total backlog | $	$ 3,000
Percentage of revenue expected to be recognized over next 12 months	50.00%
Amortization expenses of capitalized investments | $	$ 731	$ 568	$ 465
Number of countries in which Schlumberger conducts business | Country	120
Number of reportable segments accounted for greater than 10% of accounts receivable | Country	0
United States | Customer Concentration Risk
Organization And Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	18.00%
Minimum
Organization And Summary Of Significant Accounting Policies [Line Items]
Revenue recognition period	30 days
Number of countries in which Schlumberger conducts business | Country	120
Maximum
Organization And Summary Of Significant Accounting Policies [Line Items]
Revenue recognition period	60 days
Asset Performance Solutions
Organization And Summary Of Significant Accounting Policies [Line Items]
Unamortized investments | $	$ 3,724	$ 4,201
Asset Performance Solutions | Revenue | Maximum
Organization And Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	5.00%	5.00%	5.00%

Summary of Accounting Policie_4

Summary of Accounting Policies - Reconciliation of Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net Income (Loss) Attributable to Schlumberger
Basic	$ (10,137)	$ 2,138	$ (1,505)
Diluted	$ (10,137)	$ 2,138	$ (1,505)
Average Shares Outstanding
Basic	1,385	1,385	1,388
Unvested restricted stock		8
Diluted	1,385	1,393	1,388
Earnings (Loss) per Share
Basic	$ (7.32)	$ 1.54	$ (1.08)
Diluted	$ (7.32)	$ 1.53	$ (1.08)

Summary of Accounting Policie_5

Summary of Accounting Policies - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail) - shares shares in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Employee Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount	46	40	47
Unvested Restricted Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount	12		5

Charges and Credits - Summary o

Charges and Credits - Summary of Charges and Credits (Detail) - USD ($) $ in Millions	3 Months Ended				12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2018	Dec. 31, 2017
Charges And Credits [Line Items]
Charges and credits, Pretax		$ 12,901	$ 1,025	$ 50	$ 141	$ 3,764
Charges and credits, Tax		710			17	140
Charges and credits, Noncontolling interests						34
Charges and credits, Net		12,191			124	3,590
Promissory Note Fair Value Adjustment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax				$ 460		510
Charges and credits, Noncontolling interests						12
Charges and credits, Net						498
Cost of Sale
Charges And Credits [Line Items]
Charges and credits, Pretax						245
Merger and Integration
Charges And Credits [Line Items]
Charges and credits, Pretax						308
US tax reform charge
Charges And Credits [Line Items]
Charges and credits, Tax						(76)
Charges and credits, Net						76
North America restructuring | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	$ 225
Charges and credits, Tax	51
Charges and credits, Net	174
North America pressure pumping asset impairments | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax		1,575
Charges and credits, Tax		344
Charges and credits, Net		1,231
Workforce reductions
Charges And Credits [Line Items]
Charges and credits, Pretax			247		184
Charges and credits, Tax					20
Charges and credits, Net					164
Workforce reductions | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	68					247
Charges and credits, Tax	8					13
Charges and credits, Net	60					234
Other North America - Related | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax		310
Charges and credits, Tax		53
Charges and credits, Net		257
Pension settlement accounting | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	37
Charges and credits, Tax	8
Charges and credits, Net	29
Argentina | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax		127
Charges and credits, Net		127
Repurchase of bonds | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	22
Charges and credits, Tax	5
Charges and credits, Net	17
Equity Method Investment, Other Than Temporary Impairment | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax		231
Charges and credits, Tax		12
Charges and credits, Net		219
Gain on formation of Sensia joint venture | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	(247)
Charges and credits, Tax	(42)
Charges and credits, Net	(205)
Goodwill impairment | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax		8,828
Charges and credits, Tax		43
Charges and credits, Net		8,785
Other | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax		242
Charges and credits, Tax		13
Charges and credits, Net		229
Intangible assets impairment | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax		1,085
Charges and credits, Tax		248
Charges and credits, Net		837
Asset Performance Solutions | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax		294
Charges and credits, Net		$ 294
Gain on sale of marine seismic acquisition business
Charges And Credits [Line Items]
Charges and credits, Pretax					(215)
Charges and credits, Tax					(19)
Charges and credits, Net					(196)
Asset Impairment Charges
Charges And Credits [Line Items]
Charges and credits, Pretax					172
Charges and credits, Tax					16
Charges and credits, Net					$ 156
WesternGeco seismic restructuring charges | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax						1,114
Charges and credits, Tax						20
Charges and credits, Net						1,094
Venezuela investment write-down | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax						938
Charges and credits, Net						938
Multiclient seismic data impairment | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax						246
Charges and credits, Tax						81
Charges and credits, Net						165
Other restructuring charges
Charges And Credits [Line Items]
Charges and credits, Pretax			102
Other restructuring charges | Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	104					156
Charges and credits, Tax	(33)					10
Charges and credits, Noncontolling interests						22
Charges and credits, Net	$ 137					124
Provision for loss on long-term construction project
Charges And Credits [Line Items]
Charges and credits, Pretax			$ 245
Provision for loss on long-term construction project | Cost of Sale
Charges And Credits [Line Items]
Charges and credits, Pretax						245
Charges and credits, Tax						22
Charges and credits, Net						223
Merger and integration-related costs | Merger and Integration
Charges And Credits [Line Items]
Charges and credits, Pretax						308
Charges and credits, Tax						70
Charges and credits, Net						$ 238

Charges and Credits - Additiona

Charges and Credits - Additional Information (Detail) $ in Millions	Oct. 01, 2019USD ($)	Aug. 31, 2019USD ($)Unit	Dec. 31, 2019USD ($)	Sep. 30, 2019USD ($)	Dec. 31, 2018USD ($)	Jun. 30, 2018USD ($)	Dec. 31, 2017USD ($)	Jun. 30, 2017USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Charges And Credits [Line Items]
Charges and credits, Pretax			$ 104
Benefits Paid			257
Non-cash settlement charge			37
Debt instrument, repurchase amount			22						$ 22
Total number of reporting units | Unit		17
Goodwill		$ 25,000	16,042		$ 24,931		$ 25,118		$ 16,042	$ 24,931	$ 25,118
Expected increase in discount rate assumption									0.50%
Increase in goodwill impairment charge									$ 300
Expected decrease in discount rate assumption									0.50%
Decrease in goodwill impairment charge									$ 400
Intangible assets		1,085
Gain on sale of business										215
Charges and credits				$ 12,191						124	3,590
Charges and credits, Pretax				12,901			1,025	$ 50		141	3,764
Charge relating to one-time mandatory tax on previously deferred foreign earnings							410				$ 410
Tax credits resulting from remeasurement of net deferred tax liabilities							334
Promissory note in exchange of accounts receivable								$ 700
Promissory note term								3 years
Promissory note interest rate								6.50%
Debt instrument fair value			15,300		14,600				$ 15,300	14,600
US tax reform
Charges And Credits [Line Items]
Charges and credits							76
US tax reform | Tax Year2018
Charges And Credits [Line Items]
Reduced corporate income tax rate											21.00%
Promissory Notes
Charges And Credits [Line Items]
Debt instrument fair value							135				$ 135
Land seismic business
Charges And Credits [Line Items]
Impairment charge, Pretax							90
Impairments and Other
Charges And Credits [Line Items]
Charges and credits, Pretax											3,211
Cost of Sale
Charges And Credits [Line Items]
Charges and credits, Pretax											245
Merger and Integration
Charges And Credits [Line Items]
Charges and credits, Pretax											308
Promissory Note Fair Value Adjustment and Other
Charges And Credits [Line Items]
Charges and credits											498
Charges and credits, Pretax								$ 460			510
Smith International, Inc
Charges And Credits [Line Items]
Intangible assets		$ 842
Cameron | Merger and Integration
Charges And Credits [Line Items]
Charges and credits, Pretax											308
Minimum
Charges And Credits [Line Items]
Discount rate utilized									12.50%
Maximum
Charges And Credits [Line Items]
Discount rate utilized									14.00%
Seven Reporting Units
Charges And Credits [Line Items]
Total number of reporting units | Unit		7
Goodwill		$ 13,800
Ten Reporting Units
Charges And Credits [Line Items]
Total number of reporting units | Unit		10
Goodwill		$ 11,200
Nine Reporting Units
Charges And Credits [Line Items]
Total number of reporting units | Unit		9
Goodwill impairment charge		$ 8,800
Three Reporting Units
Charges And Credits [Line Items]
Total number of reporting units | Unit		3
Goodwill		$ 1,500
Three Reporting Units | Minimum
Charges And Credits [Line Items]
Goodwill		400
Three Reporting Units | Maximum
Charges And Credits [Line Items]
Goodwill		$ 600
Tenth Reporting Unit
Charges And Credits [Line Items]
Total number of reporting units | Unit		10
Goodwill		$ 900
Rockwell Automation
Charges And Credits [Line Items]
Percentage of equity ownership interest	53.00%
Schlumberger
Charges And Credits [Line Items]
Percentage of equity ownership interest	47.00%
Cash recieved	$ 238
Gain of deconsolidation in formation of joint venture			247
North America
Charges And Credits [Line Items]
Intangible assets		243
Venezuela
Charges And Credits [Line Items]
Charges and credits, Pretax							938
Facility and other exit costs
Charges And Credits [Line Items]
Charges and credits, Pretax							156
Facility and other exit costs | North America
Charges And Credits [Line Items]
Charges and credits, Pretax			225
Write Down Of Assets | North America
Charges And Credits [Line Items]
Charges and credits, Pretax			123
Operating Lease Right-of-use Asset
Charges And Credits [Line Items]
Intangible assets		98
Operating Lease Right-of-use Asset | North America
Charges And Credits [Line Items]
Charges and credits, Pretax			55
Other Exit Costs | North America
Charges And Credits [Line Items]
Charges and credits, Pretax			47
Sale Of Assets
Charges And Credits [Line Items]
Charges and credits, Pretax			68
Facility Closure Costs
Charges And Credits [Line Items]
Charges and credits, Pretax			36
Severance Costs
Charges And Credits [Line Items]
Charges and credits, Pretax			$ 68
Intangible assets		13		62
Severance Costs | North America
Charges And Credits [Line Items]
Intangible assets		10
Severance Costs | Argentina
Charges And Credits [Line Items]
Intangible assets				29
North America pressure pumping asset impairments | North America
Charges And Credits [Line Items]
Intangible assets		1,575
Charges of Pressure Pumping Equipment
Charges And Credits [Line Items]
Intangible assets		1,324
Supplies Expense
Charges And Credits [Line Items]
Intangible assets		121
Inventory Charges
Charges And Credits [Line Items]
Intangible assets		19
Charges Related to Other Businesses | North America
Charges And Credits [Line Items]
Intangible assets		310
Fixed Asset Impairment | North America
Charges And Credits [Line Items]
Intangible assets		230
Inventory Write Down
Charges And Credits [Line Items]
Charges and credits, Pretax							59
Inventory Write Down | North America
Charges And Credits [Line Items]
Intangible assets		$ 70
Production Related Impairment or Charges | Argentina
Charges And Credits [Line Items]
Intangible assets				127
Asset Impairment Charges
Charges And Credits [Line Items]
Charges and credits										156
Charges and credits, Pretax										172
Asset Impairment Charges | Argentina
Charges And Credits [Line Items]
Intangible assets				72
Devaluation Charge | Argentina
Charges And Credits [Line Items]
Intangible assets				26
Equity Method Investment, Other Than Temporary Impairment
Charges And Credits [Line Items]
Intangible assets				231
Carrying Value of Asset Production Solutions
Charges And Credits [Line Items]
Intangible assets				294
Restructuring Charges
Charges And Credits [Line Items]
Intangible assets				242
Acceleration of Stock-based Compensation Expense Associated With Certain Individuals
Charges And Credits [Line Items]
Intangible assets				57
Business Divestiture Costs
Charges And Credits [Line Items]
Intangible assets				49
Debt Instrument Premium Paid on Repurchase
Charges And Credits [Line Items]
Intangible assets				29
Marine Seismic Acquisition Business
Charges And Credits [Line Items]
Proceeds from divestiture of business					600
Gain on sale of business					$ 215
Charges and credits										(196)
Charges and credits, Pretax										$ (215)
Marine Seismic Acquisition Business | Shearwater GeoServices
Charges And Credits [Line Items]
Percentage of equity ownership interest					15.00%					15.00%
Impairment of Long-Lived Assets | Impairments and Other
Charges And Credits [Line Items]
Charges and credits					$ 172
Workforce reductions
Charges And Credits [Line Items]
Charges and credits										$ 164
Charges and credits, Pretax							247			$ 184
Workforce reductions | Impairments and Other
Charges And Credits [Line Items]
Charges and credits						$ 184
Vessel write-down
Charges And Credits [Line Items]
Charges and credits, Pretax							786
Impairment of intangible ssets
Charges And Credits [Line Items]
Charges and credits, Pretax							78
Other restructuring
Charges And Credits [Line Items]
Intangible assets				$ 45
Charges and credits, Pretax							102
Multiclient seismic data impairment
Charges And Credits [Line Items]
Intangible assets							246
Accounts receivable | Venezuela
Charges And Credits [Line Items]
Charges and credits, Pretax							469
Other-than temporary impairment | Promissory Notes
Charges And Credits [Line Items]
Charges and credits, Pretax								$ 105
Other-than temporary impairment | Venezuela | Promissory Notes
Charges And Credits [Line Items]
Charges and credits, Pretax							105
Fixed assets | Venezuela
Charges And Credits [Line Items]
Charges and credits, Pretax							285
Other | Venezuela
Charges And Credits [Line Items]
Charges and credits, Pretax							79
Loss on long-term construction project
Charges And Credits [Line Items]
Charges and credits, Pretax							$ 245
Loss on long-term construction project | Cost of Sale
Charges And Credits [Line Items]
Charges and credits											223
Charges and credits, Pretax											$ 245

Inventories - Summary of Invent

Inventories - Summary of Inventory (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Raw materials & field materials	$ 1,857	$ 1,803
Work in progress	515	519
Finished goods	1,758	1,688
Inventories	$ 4,130	$ 4,010

Fixed Assets - Summary of Fixed

Fixed Assets - Summary of Fixed Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Property Plant And Equipment [Line Items]
Fixed assets gross	$ 35,009	$ 38,664
Less: Accumulated depreciation	25,739	26,985
Fixed assets less accumulated depreciation	9,270	11,679
Land
Property Plant And Equipment [Line Items]
Fixed assets gross	483	462
Buildings & improvements
Property Plant And Equipment [Line Items]
Fixed assets gross	5,156	5,534
Machinery & equipment
Property Plant And Equipment [Line Items]
Fixed assets gross	$ 29,370	$ 32,668

Fixed Assets - Additional Infor

Fixed Assets - Additional Information (Detail) - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property Plant And Equipment [Line Items]
Depreciation expense relating to fixed assets	$ 2	$ 2.1	$ 2.3
Building and Building Improvements | Minimum
Property Plant And Equipment [Line Items]
Useful Life	25 years
Building and Building Improvements | Maximum
Property Plant And Equipment [Line Items]
Useful Life	30 years
Machinery and Equipment | Minimum
Property Plant And Equipment [Line Items]
Useful Life	5 years
Machinery and Equipment | Maximum
Property Plant And Equipment [Line Items]
Useful Life	10 years

Multiclient Seismic Data - Chan

Multiclient Seismic Data - Change in Carrying Amount of Multiclient Seismic Data (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Multiclient Seismic Data [Abstract]
Opening balance	$ 601	$ 727
Capitalized in period	231	100
Charged to expense	(264)	(226)
Ending balance	$ 568	$ 601

Goodwill - Changes in Carrying

Goodwill - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 24,931	$ 25,118
Acquisitions		39
Impairment	(8,828)
Business divestiture		(175)
Impact of changes in exchange rates and other	(61)	(51)
Goodwill, Ending Balance	16,042	24,931
Cameron
Goodwill [Line Items]
Goodwill, Beginning Balance	5,439	5,447
Impairment	(5,001)
Impact of changes in exchange rates and other	3	(8)
Goodwill, Ending Balance	441	5,439
Operating Segments | Reservoir Characterization
Goodwill [Line Items]
Goodwill, Beginning Balance	4,703	4,848
Acquisitions		39
Impairment	(97)
Business divestiture		(175)
Impact of changes in exchange rates and other	(46)	(9)
Goodwill, Ending Balance	4,560	4,703
Operating Segments | Drilling
Goodwill [Line Items]
Goodwill, Beginning Balance	10,111	10,126
Impairment	(3,025)
Impact of changes in exchange rates and other	6	(15)
Goodwill, Ending Balance	7,092	10,111
Operating Segments | Production
Goodwill [Line Items]
Goodwill, Beginning Balance	4,678	4,697
Impairment	(705)
Impact of changes in exchange rates and other	(24)	(19)
Goodwill, Ending Balance	$ 3,949	$ 4,678

Intangible Assets - Schedule of

Intangible Assets - Schedule of Intangible Assets by Major Class (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Finite Lived Intangible Assets [Line Items]
Gross Book Value	$ 9,676	$ 12,465
Accumulated Amortization	2,587	3,738
Net Book Value	7,089	8,727
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross Book Value	3,779	4,768
Accumulated Amortization	868	1,243
Net Book Value	2,911	3,525
Technology/Technical Know-How
Finite Lived Intangible Assets [Line Items]
Gross Book Value	2,498	3,494
Accumulated Amortization	779	1,246
Net Book Value	1,719	2,248
Tradenames
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,885	2,799
Accumulated Amortization	264	628
Net Book Value	1,621	2,171
Other
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,514	1,404
Accumulated Amortization	676	621
Net Book Value	$ 838	$ 783

Intangible Assets - Additional

Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite Lived Intangible Assets [Line Items]
Estimated amortization charged to income, 2019	$ 530
Estimated amortization charged to income, 2020	521
Estimated amortization charged to income, 2021	497
Estimated amortization charged to income, 2022	476
Estimated amortization charged to income, 2023	472
Amortization expense	$ 618	$ 673	$ 663
Customer Relationships | Minimum
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	18 years
Customer Relationships | Maximum
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	28 years
Technology/Technical Know-How | Minimum
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Technology/Technical Know-How | Maximum
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	18 years
Tradenames | Minimum
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Tradenames | Maximum
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	30 years

Long-term Debt and Debt Facil_3

Long-term Debt and Debt Facility Agreements - Long-term Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 14,770	$ 14,644
3.30% Senior Notes due 2021
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,597	1,596
3.65% Senior Notes due 2023
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,495	1,493
3.90% Senior Notes due 2028
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,444
2.40% Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt, carrying amount	998	997
4.00% Senior Notes due 2025
Debt Instrument [Line Items]
Long-term debt, carrying amount	929	1,742
4.30% Senior Notes due 2029
Debt Instrument [Line Items]
Long-term debt, carrying amount	845
3.75% Senior Notes due 2024
Debt Instrument [Line Items]
Long-term debt, carrying amount	746
1.00% Guaranteed Notes due 2026
Debt Instrument [Line Items]
Long-term debt, carrying amount	665	678
4.20% Senior Notes due 2021
Debt Instrument [Line Items]
Long-term debt, carrying amount	600	1,100
2.65% Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt, carrying amount	598	598
0.00% Notes due 2024
Debt Instrument [Line Items]
Long-term debt, carrying amount	551
0.25% Notes due 2027
Debt Instrument [Line Items]
Long-term debt, carrying amount	550
0.50% Notes due 2031
Debt Instrument [Line Items]
Long-term debt, carrying amount	544
3.63% Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt, carrying amount	294	847
7.00% Notes due 2038
Debt Instrument [Line Items]
Long-term debt, carrying amount	208	210
5.95% Notes due 2041
Debt Instrument [Line Items]
Long-term debt, carrying amount	114	115
5.13% Notes due 2043
Debt Instrument [Line Items]
Long-term debt, carrying amount	99	99
4.00% Notes due 2023
Debt Instrument [Line Items]
Long-term debt, carrying amount	81	82
3.70% Notes due 2024
Debt Instrument [Line Items]
Long-term debt, carrying amount	55	55
3.00% Senior Notes due 2020
Debt Instrument [Line Items]
Long-term debt, carrying amount		1,596
2.20% Senior Notes due 2020
Debt Instrument [Line Items]
Long-term debt, carrying amount		499
4.50% Notes due 2021
Debt Instrument [Line Items]
Long-term debt, carrying amount		132
3.60% Notes due 2022
Debt Instrument [Line Items]
Long-term debt, carrying amount		109
Other
Debt Instrument [Line Items]
Long-term debt, carrying amount	135	263
Commercial paper borrowings
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 2,222	$ 2,433

Long-term Debt and Debt Facil_4

Long-term Debt and Debt Facility Agreements - Long-term Debt (Parenthetical) (Detail)	3 Months Ended					12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2017
Debt Instrument [Line Items]
Debt instrument interest rate								6.50%
3.30% Senior Notes due 2021
Debt Instrument [Line Items]
Debt instrument interest rate	3.30%				3.30%	3.30%	3.30%
Debt instrument maturity date						2021	2021
3.65% Senior Notes due 2023
Debt Instrument [Line Items]
Debt instrument interest rate	3.65%				3.65%	3.65%	3.65%
Debt instrument maturity date						2023	2023
3.90% Senior Notes due 2028
Debt Instrument [Line Items]
Debt instrument interest rate	3.90%		3.90%		3.90%	3.90%	3.90%
Debt instrument maturity date			2028			2028	2028
2.40% Senior Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate	2.40%				2.40%	2.40%	2.40%
Debt instrument maturity date						2022	2022
4.00% Senior Notes due 2025
Debt Instrument [Line Items]
Debt instrument interest rate	4.00%		4.00%		4.00%	4.00%	4.00%
Debt instrument maturity date			2025			2025	2025
4.30% Senior Notes due 2029
Debt Instrument [Line Items]
Debt instrument interest rate	4.30%			4.30%	4.30%	4.30%	4.30%
Debt instrument maturity date				2029		2029	2029
3.75% Senior Notes due 2024
Debt Instrument [Line Items]
Debt instrument interest rate	3.75%			3.75%	3.75%	3.75%	3.75%
Debt instrument maturity date				2024		2024	2024
1.00% Guaranteed Notes due 2026
Debt Instrument [Line Items]
Debt instrument interest rate	1.00%				1.00%	1.00%	1.00%
Debt instrument maturity date					2026	2026	2026
4.20% Senior Notes due 2021
Debt Instrument [Line Items]
Debt instrument interest rate	4.20%				4.20%	4.20%	4.20%
Debt instrument maturity date						2021	2021
2.65% Senior Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate	2.65%				2.65%	2.65%	2.65%
Debt instrument maturity date						2022	2022
0.00% Notes due 2024
Debt Instrument [Line Items]
Debt instrument interest rate	0.00%	0.00%			0.00%	0.00%	0.00%
Debt instrument maturity date		2024				2024	2024
0.25% Notes due 2027
Debt Instrument [Line Items]
Debt instrument interest rate	0.25%	0.25%			0.25%	0.25%	0.25%
Debt instrument maturity date		2027				2027	2027
0.50% Notes due 2031
Debt Instrument [Line Items]
Debt instrument interest rate	0.50%	0.50%			0.50%	0.50%	0.50%
Debt instrument maturity date		2031				2031	2031
3.63% Senior Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate	3.63%		3.63%		3.63%	3.63%	3.63%
Debt instrument maturity date			2022			2022	2022
7.00% Notes due 2038
Debt Instrument [Line Items]
Debt instrument interest rate	7.00%				7.00%	7.00%	7.00%
Debt instrument maturity date						2038	2038
5.95% Notes due 2041
Debt Instrument [Line Items]
Debt instrument interest rate	5.95%				5.95%	5.95%	5.95%
Debt instrument maturity date						2041	2041
5.13% Notes due 2043
Debt Instrument [Line Items]
Debt instrument interest rate	5.13%				5.13%	5.13%	5.13%
Debt instrument maturity date						2043	2043
4.00% Notes due 2023
Debt Instrument [Line Items]
Debt instrument interest rate	4.00%				4.00%	4.00%	4.00%
Debt instrument maturity date						2023	2023
3.70% Notes due 2024
Debt Instrument [Line Items]
Debt instrument interest rate	3.70%				3.70%	3.70%	3.70%
Debt instrument maturity date						2024	2024
3.00% Senior Notes due 2020
Debt Instrument [Line Items]
Debt instrument interest rate	3.00%				3.00%	3.00%	3.00%
Debt instrument maturity date						2020	2020
2.20% Senior Notes due 2020
Debt Instrument [Line Items]
Debt instrument interest rate	2.20%				2.20%	2.20%	2.20%
Debt instrument maturity date						2020	2020
4.50% Notes due 2021
Debt Instrument [Line Items]
Debt instrument interest rate	4.50%				4.50%	4.50%	4.50%
Debt instrument maturity date	2021					2021	2021
3.60% Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate	3.60%				3.60%	3.60%	3.60%
Debt instrument maturity date	2022					2022	2022

Long-term Debt and Debt Facil_5

Long-term Debt and Debt Facility Agreements - Additional Information (Detail) € in Millions, $ in Millions	3 Months Ended					12 Months Ended
	Dec. 31, 2019USD ($)	Sep. 30, 2019USD ($)	Jun. 30, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Sep. 30, 2019EUR (€)	Dec. 31, 2018EUR (€)	Dec. 31, 2017USD ($)	Jun. 30, 2017
Debt Instrument [Line Items]
Debt instrument interest rate											6.50%
Debt instrument premium paid on repurchase	$ 28	$ 29
Debt instrument premium paid			$ 48
Committed credit facility agreement aggregated	6,500					$ 6,500
Unused credit facility	4,300					4,300
Short-term borrowings and current portion of long-term debt	524				$ 1,407	524	$ 1,407
Long-term Debt	$ 14,770				14,644	$ 14,770	14,644
Weighted average interest rate on variable rate debt	2.30%					2.30%
Long-term Debt maturity in 2021	$ 2,300					$ 2,300
Long-term Debt maturity in 2022	1,900					1,900
Long-term Debt maturity in 2023	1,900					1,900
Long-term Debt maturity in 2024	3,200					3,200
Long-term Debt maturity in 2025	900					900
Long-term Debt maturity in 2026	700					700
Long-term Debt maturity thereafter	3,900					3,900
Long-term debt, fair value	15,300				14,600	$ 15,300	14,600
Schlumberger Investment SA
Debt Instrument [Line Items]
Investment in subsidiary						100.00%
Commercial paper programs mature in February 2020
Debt Instrument [Line Items]
Committed credit facility agreement aggregated	1,000					$ 1,000
Commercial paper programs mature in February 2023
Debt Instrument [Line Items]
Committed credit facility agreement aggregated	2,000					2,000
Commercial paper programs mature in July 2024
Debt Instrument [Line Items]
Committed credit facility agreement aggregated	1,500					1,500
Commercial paper programs mature in February 2024
Debt Instrument [Line Items]
Committed credit facility agreement aggregated	2,000					2,000
Commercial paper borrowings
Debt Instrument [Line Items]
Long-term debt	2,200				2,400	2,200	2,400
Long-term Debt	2,222				2,433	2,222	2,433
Long-term debt, fair value										$ 135
3.00% Senior Notes due 2020
Debt Instrument [Line Items]
Debt instrument, repurchase amount	$ 416					$ 416
Debt instrument interest rate	3.00%	3.00%	3.00%			3.00%		3.00%
Debt instrument maturity date	2020	2020	2020
Notes, face amount		$ 783
Debt instrument, amount exchanged			$ 401
Long-term Debt					$ 1,596		$ 1,596
4.50% Notes due 2021
Debt Instrument [Line Items]
Debt instrument, repurchase amount	$ 126					$ 126
Debt instrument interest rate	4.50%				4.50%	4.50%	4.50%		4.50%
Debt instrument maturity date	2021					2021	2021
Long-term Debt					$ 132		$ 132
4.20% Senior Notes due 2021
Debt Instrument [Line Items]
Debt instrument, repurchase amount	$ 500					$ 500
Debt instrument interest rate	4.20%					4.20%
Debt instrument maturity date	2021
3.60% Notes due 2022
Debt Instrument [Line Items]
Debt instrument, repurchase amount	$ 106					$ 106
Debt instrument interest rate	3.60%				3.60%	3.60%	3.60%		3.60%
Debt instrument maturity date	2022					2022	2022
Long-term Debt					$ 109		$ 109
0.00% Notes due 2024
Debt Instrument [Line Items]
Debt instrument interest rate	0.00%	0.00%			0.00%	0.00%	0.00%	0.00%	0.00%
Debt instrument maturity date		2024				2024	2024
Notes, face amount | €								€ 500
Long-term Debt	$ 551					$ 551
0.25% Notes due 2027
Debt Instrument [Line Items]
Debt instrument interest rate	0.25%	0.25%			0.25%	0.25%	0.25%	0.25%	0.25%
Debt instrument maturity date		2027				2027	2027
Notes, face amount | €								€ 500
Long-term Debt	$ 550					$ 550
0.50% Notes due 2031
Debt Instrument [Line Items]
Debt instrument interest rate	0.50%	0.50%			0.50%	0.50%	0.50%	0.50%	0.50%
Debt instrument maturity date		2031				2031	2031
Notes, face amount | €								€ 500
Long-term Debt	$ 544					$ 544
3.625% Senior Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate		3.625%						3.625%
Debt instrument maturity date		2022
Notes, face amount		$ 321
3.90% Senior Notes due 2028
Debt Instrument [Line Items]
Debt instrument interest rate	3.90%		3.90%		3.90%	3.90%	3.90%		3.90%
Debt instrument maturity date			2028			2028	2028
Notes, face amount			$ 1,500
Long-term Debt	$ 1,444					$ 1,444
3.63% Senior Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate	3.63%		3.63%		3.63%	3.63%	3.63%		3.63%
Debt instrument maturity date			2022			2022	2022
Debt instrument, amount exchanged			$ 234
Long-term Debt	$ 294				$ 847	$ 294	$ 847
4.00% Senior Notes due 2025
Debt Instrument [Line Items]
Debt instrument interest rate	4.00%		4.00%		4.00%	4.00%	4.00%		4.00%
Debt instrument maturity date			2025			2025	2025
Debt instrument, amount exchanged			$ 817
3.75% Senior Notes due 2024
Debt Instrument [Line Items]
Debt instrument interest rate	3.75%			3.75%	3.75%	3.75%	3.75%		3.75%
Debt instrument maturity date				2024		2024	2024
Notes, face amount				$ 750
Long-term Debt	$ 746					$ 746
4.30% Senior Notes due 2029
Debt Instrument [Line Items]
Debt instrument interest rate	4.30%			4.30%	4.30%	4.30%	4.30%		4.30%
Debt instrument maturity date				2029		2029	2029
Notes, face amount				$ 850
Long-term Debt	$ 845					$ 845
1.00% Guaranteed Notes due 2026
Debt Instrument [Line Items]
Debt instrument interest rate	1.00%				1.00%	1.00%	1.00%		1.00%
Debt instrument maturity date					2026	2026	2026
Notes, face amount | €									€ 600
Long-term Debt	$ 665				$ 678	$ 665	$ 678

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019USD ($)Country	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Sep. 30, 2019EUR (€)	Jun. 30, 2017
Derivative [Line Items]
Fixed rate debt aggregate	$ 12,900,000,000
Variable rate debt aggregate	$ 2,400,000,000
Number of countries in which Schlumberger generates revenue | Country	120
Percentage of revenue denominated in domestic currency	78.00%
Denominated debt issued			$ 1,100,000,000	€ 1,500,000,000
Promissory note interest rate					6.50%
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	$ 34,000,000
Transaction gains (losses) of hedging activities	2,000,000	$ 1,000,000	(17,000,000)
Fair value of outstanding derivatives	$ 0	$ 0
2.20% Senior Notes due 2020
Derivative [Line Items]
Notes, face amount			$ 500,000,000
Derivative swap interest rate			2.20%
Promissory note interest rate	2.20%	2.20%
2.65% Senior Notes due 2022
Derivative [Line Items]
Notes, face amount			$ 600,000,000
Derivative swap interest rate			2.65%
Promissory note interest rate	2.65%	2.65%
0.00% Notes due 2024
Derivative [Line Items]
Notes, face amount | €				€ 500,000,000
Derivative swap interest rate				0.00%
Promissory note interest rate	0.00%	0.00%		0.00%
0.25% Notes due 2027
Derivative [Line Items]
Notes, face amount | €				€ 500,000,000
Derivative swap interest rate				0.25%
Promissory note interest rate	0.25%	0.25%		0.25%
Notes due 2031
Derivative [Line Items]
Notes, face amount | €				€ 500,000,000
Cross currency swaps
Derivative [Line Items]
Notional amount of interest rate swap			$ 1,100,000,000	€ 1,500,000,000
Cross currency swaps | 2.20% Senior Notes due 2020
Derivative [Line Items]
Promissory note interest rate			1.97%
Cross currency swaps | 2.65% Senior Notes due 2022
Derivative [Line Items]
Promissory note interest rate			2.52%
Cross currency swaps | 0.00% Notes due 2024
Derivative [Line Items]
Promissory note interest rate				2.29%
Cross currency swaps | 0.25% Notes due 2027
Derivative [Line Items]
Promissory note interest rate				2.51%
Cross currency swaps | Notes due 2031
Derivative [Line Items]
Promissory note interest rate				2.76%
Foreign exchange contracts
Derivative [Line Items]
Notional amount of interest rate swap	$ 7,700,000,000
Foreign exchange contracts | Debt | Derivatives designated as hedges
Derivative [Line Items]
Notional amount of interest rate swap	$ 3,000,000,000

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities - Effect of Derivative Instruments Designated as Fair Value Hedges and Not Designated as Hedges on Consolidated Statement of Income (Loss) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivatives not designated as hedges | Foreign exchange contracts | Cost of services/sales
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ (5)	$ 40	$ (26)
Fair Value Hedging | Derivatives designated as hedges | Cross currency swaps | Interest expense
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income		(25)	73
Cash Flow Hedging | Derivatives designated as hedges
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	(45)	79	(8)
Cash Flow Hedging | Derivatives designated as hedges | Cross currency swaps | Interest expense
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	(35)	80	$ (8)
Cash Flow Hedging | Derivatives designated as hedges | Foreign exchange contracts | Cost of services/sales
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ (10)	$ (1)

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Equity [Abstract]
Common stock, shares authorized	4,500,000,000
Common stock, par value	$ 0.01
Common stock, shares outstanding	1,384,515,345	1,382,964,324
Preferred stock, shares authorized	200,000,000
Preferred stock, par value	$ 0.01
Preferred stock, issued	0
Other comprehensive income (loss)	$ 184	$ (239)	$ 369

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	$ 36,586	$ 37,261	$ 41,529
Reclassification to Retained Earnings of stranded tax effects resulting from US tax reform		(109)
Other comprehensive income (loss) before reclassifications	162	(404)	145
Amounts reclassified from accumulated other comprehensive loss	93	183	239
Income taxes	(71)	(18)	(15)
Balance	24,176	36,586	37,261
Currency Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(2,330)	(2,139)	(2,136)
Other comprehensive income (loss) before reclassifications	67	(191)	(3)
Balance	(2,263)	(2,330)	(2,139)
Marketable Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	2	13	21
Other comprehensive income (loss) before reclassifications		(11)	(8)
Balance	2	2	13
Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(12)	3	(19)
Other comprehensive income (loss) before reclassifications	(32)	(16)	22
Amounts reclassified from accumulated other comprehensive loss	10	1
Balance	(34)	(12)	3
Pension and Other Postretirement Benefit Plans
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(2,282)	(2,151)	(2,509)
Reclassification to Retained Earnings of stranded tax effects resulting from US tax reform		(109)
Other comprehensive income (loss) before reclassifications	127	(186)	134
Amounts reclassified from accumulated other comprehensive loss	83	182	239
Income taxes	(71)	(18)	(15)
Balance	(2,143)	(2,282)	(2,151)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(4,622)	(4,274)	(4,643)
Reclassification to Retained Earnings of stranded tax effects resulting from US tax reform		(109)
Balance	$ (4,438)	$ (4,622)	$ (4,274)

Stock-based Compensation Plan_2

Stock-based Compensation Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Intrinsic value of stock options outstanding	$ 0
Intrinsic value of stock options exercisable	0
Total intrinsic value of options exercised	4,000,000	$ 15,000,000	$ 26,000,000
Total unrecognized compensation cost related to nonvested stock-based compensation arrangements	324,000,000
Expected to be recognized in 2020	191,000,000
Expected to be recognized in 2021	100,000,000
Expected to be recognized in 2022	27,000,000
Expected to be recognized in 2023	$ 6,000,000
Future Grants Shares	35,000,000
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option maximum term	10 years
Stock options vesting period	over five years
Weighted-average remaining contractual life of stock options exercisable, in years	3 years 5 months 19 days
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance shares outstanding	3,600,000
Performance Shares | Achievement Exceeds Predefined Target | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance shares to be awarded as a percentage of total target award	250.00%
Performance Shares | Achievement Falls Below Threshold
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance shares to be awarded	0
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance shares to be awarded	7,888,000	3,204,000	2,495,000
Performance shares outstanding	11,822,000	6,951,000	5,428,000	5,112,000
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%

Stock-based Compensation Plan_3

Stock-based Compensation Plans - Weighted-Average Assumptions (Detail) - Employee Stock Option - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Dividend yield	4.80%	2.60%	2.30%
Expected volatility	25.00%	26.00%	27.00%
Risk-free interest rate	2.70%	2.60%	2.40%
Expected option life in years	7 years	7 years	7 years
Weighted-average fair value per share	$ 6.21	$ 17.37	$ 20.85

Stock-based Compensation Plan_4

Stock-based Compensation Plans - Options Outstanding and Option Exercisable (Detail) shares in Thousands	12 Months Ended
	Dec. 31, 2019$ / sharesshares
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Options Outstanding | shares	46,269
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	4 years 7 months 6 days
Options Outstanding, Weighted- Average Exercise Price	$ 75.65
Options Exercisable | shares	33,603
Options Exercisable, Weighted-Average Exercise Price	$ 77.77
Exercise prices range $$41.47 - $69.98
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise prices minimum range	41.47
Exercise prices maximum range	$ 69.98
Options Outstanding | shares	11,307
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	5 years 7 months 6 days
Options Outstanding, Weighted- Average Exercise Price	$ 53.99
Options Exercisable | shares	5,343
Options Exercisable, Weighted-Average Exercise Price	$ 65.01
Exercise prices range $70.92 - $76.74
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise prices minimum range	70.92
Exercise prices maximum range	$ 76.74
Options Outstanding | shares	10,202
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	3 years
Options Outstanding, Weighted- Average Exercise Price	$ 72.11
Options Exercisable | shares	9,958
Options Exercisable, Weighted-Average Exercise Price	$ 72.17
Exercise prices range $77.10 - $83.15
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise prices minimum range	77.10
Exercise prices maximum range	$ 83.15
Options Outstanding | shares	7,714
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	6 years 4 months 24 days
Options Outstanding, Weighted- Average Exercise Price	$ 79.32
Options Exercisable | shares	4,257
Options Exercisable, Weighted-Average Exercise Price	$ 79.62
Exercise prices range $84.22 - $88.77
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise prices minimum range	84.22
Exercise prices maximum range	$ 88.77
Options Outstanding | shares	9,210
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	3 years 9 months 18 days
Options Outstanding, Weighted- Average Exercise Price	$ 85.88
Options Exercisable | shares	6,885
Options Exercisable, Weighted-Average Exercise Price	$ 85.38
Exercise prices range $91.28 - $114.83
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise prices minimum range	91.28
Exercise prices maximum range	$ 114.83
Options Outstanding | shares	7,836
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	4 years 4 months 24 days
Options Outstanding, Weighted- Average Exercise Price	$ 95.86
Options Exercisable | shares	7,160
Options Exercisable, Weighted-Average Exercise Price	$ 96.25

Stock-based Compensation Plan_5

Stock-based Compensation Plans - Summary of Stock Option Activity (Detail) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Outstanding at beginning of year, Shares	43,529	47,210	46,502
Granted, Shares	5,604	2,121	5,024
Exercised, Shares	(1,045)	(936)	(1,156)
Forfeited, Shares	(1,819)	(4,866)	(3,160)
Outstanding at year-end, Shares	46,269	43,529	47,210
Outstanding at beginning of year, Weighted-Average Exercise Price	$ 79.36	$ 79.13	$ 78.31
Granted, Weighted-Average Exercise Price	41.50	76.95	86.55
Exercised, Weighted-Average Exercise Price	38.50	54.20	57.87
Forfeited, Weighted-Average Exercise Price	74.69	84.19	86.99
Outstanding at year-end, Weighted-Average Exercise Price	$ 75.65	$ 79.36	$ 79.13

Stock-based Compensation Plan_6

Stock-based Compensation Plans - Restricted Stock Transactions (Detail) - Restricted Stock - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unvested at beginning of year, Restricted Stock	6,951	5,428	5,112
Granted, Restricted Stock	7,888	3,204	2,495
Vested, Restricted Stock	(2,722)	(982)	(1,645)
Forfeited, Restricted Stock	(295)	(699)	(534)
Unvested at year-end, Restricted Stock	11,822	6,951	5,428
Unvested at beginning of year, Weighted-Average Grant Date Fair Value	$ 70.13	$ 72.33	$ 78.31
Granted, Weighted-Average Grant Date Fair Value	35.56	70.54	73.09
Vested, Weighted-Average Grant Date Fair Value	72.09	77.62	83.03
Forfeited, Weighted-Average Grant Date Fair Value	57.41	70.67	80.17
Unvested at year-end, Weighted-Average Grant Date Fair Value	$ 49.86	$ 70.13	$ 72.33

Stock-based Compensation Plan_7

Stock-based Compensation Plans - Discounted Stock Purchase Plan Assumptions and Resulting Weighted Average Fair Value (Detail) - DSPP - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Dividend yield	5.30%	2.90%	2.70%
Expected volatility	30.00%	22.00%	19.00%
Risk-free interest rate	2.30%	1.60%	1.00%
Weighted-average fair value per share	$ 5.81	$ 9.01	$ 9.46

Stock-based Compensation Plan_8

Stock-based Compensation Plans - Stock-Based Compensation Expense Recognized in Income (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 405	$ 345	$ 343
Employee Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	99	134	161
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	274	179	148
DSPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 32	$ 32	$ 34

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)Jurisdictions	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Income Tax Disclosure [Line Items]
Minimum number of jurisdictions to Schlumberger operates | Jurisdictions	100
US federal statutory rate	21.00%	21.00%	35.00%
Restructuring and other charges	$ 12,901	$ 141	$ 3,764
Deferred tax assets, valuation allowances relating to net operating losses in certain countries	82	87
Accrued interest and penalties	188	205	195
Domestic Country
Income Tax Disclosure [Line Items]
Restructuring and other charges	8,769	102	533
Foreign Country
Income Tax Disclosure [Line Items]
Restructuring and other charges	$ 4,132	$ 39	$ 3,231
Minimum
Income Tax Disclosure [Line Items]
US federal statutory rate	0.00%
Maximum
Income Tax Disclosure [Line Items]
US federal statutory rate	35.00%

Income Taxes - Income (Loss) Be

Income Taxes - Income (Loss) Before Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income before taxes, United States	$ (8,991)	$ (55)	$ (841)
Income before taxes, Outside United States	(1,427)	2,679	(342)
Income (loss) before taxes	$ (10,418)	$ 2,624	$ (1,183)

Income Taxes - Components of Ne

Income Taxes - Components of Net Deferred Tax Assets (Liabilities) (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Postretirement benefits	$ 51	$ 122
Intangible assets	(1,833)	(2,110)
Investments in non-US subsidiaries	(220)	(223)
Fixed assets, net	434	(140)
Inventories	155	111
Foreign tax credits	312	343
Other, net	610	456
Net deferred tax assets (liabilities)	$ (491)	$ (1,441)

Income Taxes - Components of Ta

Income Taxes - Components of Tax Expense (Benefit) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
United States-Federal	$ (81)	$ 124	$ (170)
United States-State	11	(50)	57
Outside United States	770	618	703
Current Income Tax Expense (Benefit), Total	700	692	590
Deferred:
United States-Federal	(660)	(143)	(225)
United States-State	(93)	(4)	4
Outside United States	(257)	(69)	(47)
Valuation allowance	(1)	(29)	8
Deferred income taxes	(1,011)	(245)	(260)
Consolidated taxes on (loss) income	$ (311)	$ 447	$ 330

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of US Statutory Federal Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure Income Tax Reconciliation Of U S Statutory Federal Tax Rate Detail [Line Items]
US federal statutory rate	21.00%	21.00%	35.00%
State tax		(2.00%)
Non-US income taxed at different rates		(2.00%)	29.00%
Enactment of US tax reform (See Note 3)			(6.00%)
Other	1.00%		7.00%
Effective income tax rate	3.00%	17.00%	(28.00%)
Charges And Credits
Disclosure Income Tax Reconciliation Of U S Statutory Federal Tax Rate Detail [Line Items]
Charges and credits (See Note 3)	(19.00%)		(93.00%)

Income Taxes - Reconciliation_2

Income Taxes - Reconciliation of Liabilities Associated with Uncertain Tax Provisions (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Balance at beginning of year	$ 1,433	$ 1,393	$ 1,419
Additions based on tax positions related to the current year	86	88	132
Additions for tax positions of prior years	65	145	58
Impact of changes in exchange rates	2	(41)	23
Settlements with tax authorities	(50)	(22)	(41)
Reductions for tax positions of prior years	(176)	(57)	(157)
Reductions due to the lapse of the applicable statute of limitations	(59)	(73)	(41)
Balance at end of year	$ 1,301	$ 1,433	$ 1,393

Income Taxes - Tax Years Subjec

Income Taxes - Tax Years Subject to Examination by Tax Authorities (Detail)	12 Months Ended
	Dec. 31, 2019
Canada | Earliest Tax Year
Income Tax Examination [Line Items]
Income tax examination, year(s) under examination	2012
Canada | Latest Tax Year
Income Tax Examination [Line Items]
Income tax examination, year(s) under examination	2019
Ecuador | Earliest Tax Year
Income Tax Examination [Line Items]
Income tax examination, year(s) under examination	2016
Ecuador | Latest Tax Year
Income Tax Examination [Line Items]
Income tax examination, year(s) under examination	2019
Mexico | Earliest Tax Year
Income Tax Examination [Line Items]
Income tax examination, year(s) under examination	2012
Mexico | Latest Tax Year
Income Tax Examination [Line Items]
Income tax examination, year(s) under examination	2019
Norway | Earliest Tax Year
Income Tax Examination [Line Items]
Income tax examination, year(s) under examination	2014
Norway | Latest Tax Year
Income Tax Examination [Line Items]
Income tax examination, year(s) under examination	2019
Russia | Earliest Tax Year
Income Tax Examination [Line Items]
Income tax examination, year(s) under examination	2016
Russia | Latest Tax Year
Income Tax Examination [Line Items]
Income tax examination, year(s) under examination	2019
Saudi Arabia | Earliest Tax Year
Income Tax Examination [Line Items]
Income tax examination, year(s) under examination	2015
Saudi Arabia | Latest Tax Year
Income Tax Examination [Line Items]
Income tax examination, year(s) under examination	2019
United Kingdom | Earliest Tax Year
Income Tax Examination [Line Items]
Income tax examination, year(s) under examination	2017
United Kingdom | Latest Tax Year
Income Tax Examination [Line Items]
Income tax examination, year(s) under examination	2019
United States | Earliest Tax Year
Income Tax Examination [Line Items]
Income tax examination, year(s) under examination	2017
United States | Latest Tax Year
Income Tax Examination [Line Items]
Income tax examination, year(s) under examination	2019

Leases and Lease Commitments -

Leases and Lease Commitments - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Leased Assets [Line Items]
Total rental expense	$ 1,700	$ 1,700	$ 1,400
Operating lease, asset	$ 1,300	$ 1,800
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsMember	us-gaap:OtherAssetsMember
Operating lease, liability	$ 1,411	$ 1,800
Operating lease, weighted average remaining lease term	7 years
Operating lease, weighted average discount rate, percent	3.20%
Accounts Payable and Accrued Liabilities
Operating Leased Assets [Line Items]
Operating lease, liability	$ 494	600
Other Liabilities
Operating Leased Assets [Line Items]
Operating lease, liability	917	$ 1,200
ASU No. 2016-02
Operating Leased Assets [Line Items]
New accounting pronouncement or change in accounting principle effect of additional assets and liabilities	$ 1,300

Leases and Lease Commitments _2

Leases and Lease Commitments - Maturities of Operating Lease Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Operating Leased Assets [Line Items]
2020	$ 510
2021	276
2022	188
2023	152
2024	124
Thereafter	332
Total lease payments	1,582
Less: Interest	(171)
Operating lease, liability	1,411	$ 1,800
Accounts Payable and Accrued Liabilities
Operating Leased Assets [Line Items]
Operating lease, liability	494	600
Other Liabilities
Operating Leased Assets [Line Items]
Operating lease, liability	$ 917	$ 1,200

Segment Information - Schedule

Segment Information - Schedule of Segment Reporting Information, by Segment (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenue		$ 32,917	$ 32,815	$ 30,440
Income Before Taxes		(10,418)	2,624	(1,183)
Assets		56,312	70,507	71,987
Depreciation and Amortization	[1]	3,589	3,556	3,837
Capital Expenditures		1,724	2,160	2,107
Pretax operating income		3,978	4,187	3,921
Interest expense		609	575	566
Charges & credits		12,901	141	3,764
Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue		6,312	6,173
Drilling
Segment Reporting Information [Line Items]
Revenue		9,721	9,250
Production
Segment Reporting Information [Line Items]
Revenue		11,987	12,394
Cameron
Segment Reporting Information [Line Items]
Revenue		5,336	5,520
Operating Segments
Segment Reporting Information [Line Items]
Revenue		32,917	32,815	30,440
Interest income		8	8	21
Interest expense		38	38	53
Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue		6,312	6,173	6,476
Income Before Taxes		1,327	1,347	1,184
Assets		3,909	4,306	4,714
Depreciation and Amortization		643	667	981
Capital Expenditures		307	296	304
Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue		9,721	9,250	8,392
Income Before Taxes		1,216	1,239	1,151
Assets		5,724	5,843	5,513
Depreciation and Amortization		540	597	697
Capital Expenditures		616	718	629
Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue		11,987	12,394	10,630
Income Before Taxes		993	1,052	936
Assets		10,289	12,625	12,450
Depreciation and Amortization		1,540	1,417	1,240
Capital Expenditures		551	886	889
Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue		5,336	5,520	5,524
Income Before Taxes		613	653	792
Assets		4,102	4,138	4,156
Depreciation and Amortization		233	247	268
Capital Expenditures		166	152	151
Eliminations & other
Segment Reporting Information [Line Items]
Revenue		(439)	(522)	(582)
Income Before Taxes		(171)	(104)	(142)
Assets		1,414	1,460	1,665
Depreciation and Amortization		216	189	213
Capital Expenditures		84	108	134
Goodwill and intangible assets		23,130	33,658	34,472
Cash and short term investments		2,167	2,777
Cash, short term investments and fixed income investments				5,089
All other assets		5,577	5,700	3,928
Corporate & other	[2]	(957)	(937)	(934)
Interest income	[3]	33	52	107
Interest expense	[4]	(571)	(537)	(513)
Charges & credits	[5]	(12,901)	(141)	(3,764)
Eliminations & other | Corporate and Other
Segment Reporting Information [Line Items]
Depreciation and Amortization	[2]	$ 417	$ 439	$ 438
[1]	Includes depreciation of property, plant and equipment and amortization of intangible assets, multiclient seismic data costs and APS investments.
[2]	Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets (including intangible asset amortization expense resulting from the 2016 acquisition of Cameron), certain centrally managed initiatives and other nonoperating items.
[3]	Interest income excludes amounts which are included in the segments’ income (2019: $8 million; 2018: $8 million; 2017: $21 million).
[4]	Interest expense excludes amounts which are included in the segments’ income (2019: $38 million; 2018: $38 million; 2017: $53 million).
[5]	See Note 3 – Charges and Credits .

Segment Information - Schedul_2

Segment Information - Schedule of Segment Reporting Information, by Segment (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Interest expense	$ 609	$ 575	$ 566
Operating Segments
Segment Reporting Information [Line Items]
Interest income	8	8	21
Interest expense	$ 38	$ 38	$ 53

Segment Information - Revenue b

Segment Information - Revenue by Geographic Area (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenue	$ 32,917	$ 32,815	$ 30,440
Operating Segments
Segment Reporting Information [Line Items]
Revenue	32,917	32,815	30,440
Operating Segments | North America
Segment Reporting Information [Line Items]
Revenue	10,843	11,984	9,487
Operating Segments | Latin America
Segment Reporting Information [Line Items]
Revenue	4,149	3,745	3,976
Operating Segments | Europe/CIS/Africa
Segment Reporting Information [Line Items]
Revenue	7,683	7,158	7,072
Operating Segments | Middle East & Asia
Segment Reporting Information [Line Items]
Revenue	10,017	9,543	9,394
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	$ 225	$ 385	$ 511

Segment Information - Additiona

Segment Information - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenue	$ 32,917	$ 32,815	$ 30,440
United States
Segment Reporting Information [Line Items]
Revenue	$ 9,300	$ 10,100	$ 8,100

Segment Information - Summary o

Segment Information - Summary of North America and International Revenue Disaggregated by Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenue	$ 32,917	$ 32,815	$ 30,440
Operating Segments
Segment Reporting Information [Line Items]
Revenue	32,917	32,815	30,440
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	225	385	511
North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	10,843	11,984	9,487
International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	21,849	20,446
Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	6,312	6,173
Reservoir Characterization | Operating Segments
Segment Reporting Information [Line Items]
Revenue	6,312	6,173	6,476
Reservoir Characterization | Eliminations & other
Segment Reporting Information [Line Items]
Revenue	22	150
Reservoir Characterization | North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	1,027	992
Reservoir Characterization | International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,263	5,031
Drilling
Segment Reporting Information [Line Items]
Revenue	9,721	9,250
Drilling | Operating Segments
Segment Reporting Information [Line Items]
Revenue	9,721	9,250	8,392
Drilling | Eliminations & other
Segment Reporting Information [Line Items]
Revenue	207	234
Drilling | North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	2,220	2,332
Drilling | International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	7,294	6,684
Production
Segment Reporting Information [Line Items]
Revenue	11,987	12,394
Production | Operating Segments
Segment Reporting Information [Line Items]
Revenue	11,987	12,394	10,630
Production | Eliminations & other
Segment Reporting Information [Line Items]
Revenue	4	5
Production | North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,336	6,312
Production | International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	6,647	6,077
Cameron
Segment Reporting Information [Line Items]
Revenue	5,336	5,520
Cameron | Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,336	5,520	$ 5,524
Cameron | Eliminations & other
Segment Reporting Information [Line Items]
Revenue	43	86
Cameron | North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	2,318	2,427
Cameron | International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	2,975	3,007
Other
Segment Reporting Information [Line Items]
Revenue	(439)	(522)
Other | Eliminations & other
Segment Reporting Information [Line Items]
Revenue	(51)	(90)
Other | North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	(58)	(79)
Other | International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	$ (330)	$ (353)

Segment Information - Fixed Ass

Segment Information - Fixed Assets Less Accumulated Depreciation by Geographic Area (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Fixed Assets less accumulated depreciation	$ 9,270	$ 11,679
Operating Segments | North America
Segment Reporting Information [Line Items]
Fixed Assets	3,646	5,715
Operating Segments | Latin America
Segment Reporting Information [Line Items]
Fixed Assets	824	898
Operating Segments | Europe
Segment Reporting Information [Line Items]
Fixed Assets	2,258	2,364
Operating Segments | Middle East & Asia
Segment Reporting Information [Line Items]
Fixed Assets	2,453	2,604
Unallocated
Segment Reporting Information [Line Items]
Fixed Assets	$ 89	$ 98

Pension and Other Benefit Pla_3

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, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.30%	4.30%
US
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.30%	3.70%	4.20%
Compensation increases	4.00%	4.00%	4.00%
Return on plan assets	6.60%	7.25%	7.25%
International
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.00%	3.55%	4.13%
Compensation increases	4.83%	4.81%	4.81%
Return on plan assets	7.22%	7.40%	7.40%

Pension and Other Benefit Pla_4

Pension and Other Benefit Plans - Net Pension Cost (Credit) for Schlumberger Pension Plans and US Postretirement Medical Plan (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Postretirement medical plan
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	$ 29	$ 32	$ 29
Interest cost on projected benefit obligation	45	43	46
Expected return on plan assets	(64)	(63)	(60)
Amortization of prior service cost	(28)	(28)	(29)
Total pension cost	(18)	(16)	(14)
US
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	49	59	57
Interest cost on projected benefit obligation	180	167	175
Expected return on plan assets	(232)	(248)	(242)
Amortization of prior service cost	10	13	12
Amortization of net loss	29	47	39
Settlement charge	37
Total pension cost	73	38	41
International
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	112	138	95
Interest cost on projected benefit obligation	333	304	306
Expected return on plan assets	(592)	(584)	(541)
Amortization of prior service cost	7	10	97
Amortization of net loss	70	140	120
Total pension cost	$ (70)	$ 8	$ 77

Pension and Other Benefit Pla_5

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)	Dec. 31, 2019	Dec. 31, 2018
US
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.30%	4.30%
Compensation increases	4.00%	4.00%
International
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.27%	4.00%
Compensation increases	4.83%	4.83%

Pension and Other Benefit Pla_6

Pension and Other Benefit Plans - Changes in Projected Benefit Obligation, Plan Assets and Funded Status of Plans (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Change in Plan Assets
Benefits paid	$ (257)
Amounts Recognized in Balance Sheet
Postretirement Benefits	(967)	$ (967)	$ (1,153)
US
Change in Projected Benefit Obligations
Projected benefit obligation at beginning of year		4,278	4,603
Service cost		49	59	$ 57
Interest cost		180	167	175
Actuarial (gains) losses		535	(349)
Settlement		(240)
Benefits paid		(209)	(202)
Projected benefit obligation at end of year	4,593	4,593	4,278	4,603
Change in Plan Assets
Plan assets at fair value at beginning of year		3,748	4,058
Actual return on plan assets		931	(112)
Company contributions		6	4
Settlement		(240)
Benefits paid		(209)	(202)
Plan assets at fair value at end of year	4,236	4,236	3,748	4,058
Unfunded Liability	(357)	(357)	(530)
Amounts Recognized in Balance Sheet
Postretirement Benefits	(357)	(357)	(530)
Total of post retirement benefits	(357)	(357)	(530)
Amounts Recognized in Accumulated Other Comprehensive Loss
Actuarial losses	622	622	852
Prior service cost	9	9	18
Total amount recognized in accumulated other comprehensive income	631	631	870
Accumulated benefit obligation	4,345	4,345	4,070
International
Change in Projected Benefit Obligations
Projected benefit obligation at beginning of year		8,111	8,752
Service cost		112	138	95
Interest cost		333	304	306
Contribution by plan participants		63	79
Actuarial (gains) losses		1,304	(758)
Currency effect		50	(87)
Settlement		(17)
Benefits paid		(309)	(317)
Projected benefit obligation at end of year	9,647	9,647	8,111	8,752
Change in Plan Assets
Plan assets at fair value at beginning of year		7,872	8,507
Actual return on plan assets		1,676	(370)
Currency effect		59	(105)
Company contributions		19	78
Contributions by plan participants		63	79
Settlement		(17)
Benefits paid		(309)	(317)
Plan assets at fair value at end of year	9,363	9,363	7,872	$ 8,507
Unfunded Liability	(284)	(284)	(239)
Amounts Recognized in Balance Sheet
Postretirement Benefits	(602)	(602)	(514)
Other Assets	318	318	275
Total of post retirement benefits	(284)	(284)	(239)
Amounts Recognized in Accumulated Other Comprehensive Loss
Actuarial losses	1,638	1,638	1,440
Prior service cost			9
Total amount recognized in accumulated other comprehensive income	1,638	1,638	1,449
Accumulated benefit obligation	$ 9,376	$ 9,376	$ 7,895

Pension and Other Benefit Pla_7

Pension and Other Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Fair value of excess of plan assets, projected benefit obligation	$ 11,700
Projected benefit obligation plan assets	12,600
Accumulated benefit obligation plan assets	$ 12,200
Frequency of asset performance monitored, years	5 years
Expected contributions to postretirement benefit plans	$ 20
Expenses for deferred benefit programs	$ 410	$ 435	$ 413
US Employees Postretirement Benefits Other Than Pensions
Defined Benefit Plan Disclosure [Line Items]
Retirement coverage plan, description	Effective April 1, 2015, Schlumberger changed the way it provides healthcare coverage to certain retirees who are age 65 and over.  Under the amended plan, these retirees transferred to individual coverage under the Medicare Exchange.  Schlumberger subsidizes the cost of the program by providing these retirees with a Health Reimbursement Account.  The annual subsidy may be increased based on medical cost inflation, but it will not be increased by more than 5% in any given year.
US Employees Postretirement Benefits Other Than Pensions | Maximum
Defined Benefit Plan Disclosure [Line Items]
Compensation increases	5.00%
Postretirement medical plan | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Investment of assets in government and government-related debt securities under US postretirement medical plan	60.00%
Postretirement medical plan | Government and government-related debt securities
Defined Benefit Plan Disclosure [Line Items]
Investment of assets in government and government-related debt securities under US postretirement medical plan	40.00%

Pension and Other Benefit Pla_8

Pension and Other Benefit Plans - Weighted-Average Allocation of Plan Assets and Target Allocation by Asset Category (Detail)	Dec. 31, 2019	Dec. 31, 2018
US
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	100.00%	100.00%
Target allocation of assets	100.00%	100.00%
International
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	100.00%	100.00%
Target allocation of assets	100.00%	100.00%
Equity securities | US
Defined Benefit Plan Disclosure [Line Items]
Target allocation of assets	22.00%	21.00%
Equity securities | US | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	20.00%
Equity securities | US | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	30.00%
Equity securities | International
Defined Benefit Plan Disclosure [Line Items]
Target allocation of assets	50.00%	50.00%
Equity securities | International | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	47.00%
Equity securities | International | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	59.00%
Debt securities | US
Defined Benefit Plan Disclosure [Line Items]
Target allocation of assets	70.00%	70.00%
Debt securities | US | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	63.00%
Debt securities | US | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	77.00%
Debt securities | International
Defined Benefit Plan Disclosure [Line Items]
Target allocation of assets	31.00%	32.00%
Debt securities | International | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	27.00%
Debt securities | International | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	33.00%
Cash and cash equivalents | US
Defined Benefit Plan Disclosure [Line Items]
Target allocation of assets	2.00%	2.00%
Cash and cash equivalents | US | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	0.00%
Cash and cash equivalents | US | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	3.00%
Cash and cash equivalents | International
Defined Benefit Plan Disclosure [Line Items]
Target allocation of assets	4.00%	2.00%
Cash and cash equivalents | International | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	0.00%
Cash and cash equivalents | International | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	3.00%
Alternative investments | US
Defined Benefit Plan Disclosure [Line Items]
Target allocation of assets	6.00%	7.00%
Alternative investments | US | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	5.00%
Alternative investments | US | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	10.00%
Alternative investments | International
Defined Benefit Plan Disclosure [Line Items]
Target allocation of assets	15.00%	16.00%
Alternative investments | International | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	15.00%
Alternative investments | International | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	22.00%

Pension and Other Benefit Pla_9

Pension and Other Benefit Plans - Fair Value of Schlumberger's Pension Plan Assets (Detail) - USD ($) $ in Millions		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		$ 4,236	$ 3,748	$ 4,058
International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		9,363	7,872	$ 8,507
Level One | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		948	789
Level One | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		4,241	3,514
Level Two | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		3,014	2,688
Level Two | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		3,683	3,126
Level Three | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		274	271
Level Three | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		1,439	1,232
Cash and cash equivalents | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		73	80
Cash and cash equivalents | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		351	157
Cash and cash equivalents | Level One | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		59	44
Cash and cash equivalents | Level One | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		166	75
Cash and cash equivalents | Level Two | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		14	36
Cash and cash equivalents | Level Two | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		185	82
Equity securities, US | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[1]	605	501
Equity securities, US | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[1]	2,834	2,421
Equity securities, US | Level One | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[1]	500	416
Equity securities, US | Level One | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[1]	2,347	2,028
Equity securities, US | Level Two | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[1]	105	85
Equity securities, US | Level Two | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[1]	487	393
Equity securities, International | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[2]	320	267
Equity securities, International | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[2]	1,871	1,526
Equity securities, International | Level One | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[2]	315	263
Equity securities, International | Level One | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[2]	1,723	1,406
Equity securities, International | Level Two | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[2]	5	4
Equity securities, International | Level Two | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[2]	148	120
Corporate bonds | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[3]	1,687	1,517
Corporate bonds | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[3]	1,105	923
Corporate bonds | Level Two | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[3]	1,687	1,517
Corporate bonds | Level Two | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[3]	1,105	923
Government and government-related debt securities | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[4]	1,256	1,072
Government and government-related debt securities | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[4]	1,602	1,377
Government and government-related debt securities | Level One | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[4]	74	66
Government and government-related debt securities | Level One | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[4]	5	5
Government and government-related debt securities | Level Two | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[4]	1,182	1,006
Government and government-related debt securities | Level Two | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[4]	1,597	1,372
Collateralized mortgage obligations and mortgage backed securities | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[5]	21	40
Collateralized mortgage obligations and mortgage backed securities | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[5]	161	236
Collateralized mortgage obligations and mortgage backed securities | Level Two | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[5]	21	40
Collateralized mortgage obligations and mortgage backed securities | Level Two | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[5]	161	236
Private equity | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[6]	181	185
Private equity | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[6]	623	565
Private equity | Level Three | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[6]	181	185
Private equity | Level Three | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[6]	623	565
Real estate | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[7]	93	86
Real estate | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[7]	183	150
Real estate | Level Three | US
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[7]	93	86
Real estate | Level Three | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	[7]	183	150
Other | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		633	517
Other | Level Three | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		$ 633	$ 517
[1]	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.
[2]	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.
[3]	Corporate bonds consist primarily of investment grade bonds from diversified industries.
[4]	Government and government-related debt securities are comprised primarily of inflation-protected US treasuries and, to a lesser extent, other government-related securities.
[5]	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.
[6]	Private equity includes investments in several funds of funds.
[7]	Real estate primarily includes investments in real estate limited partnerships, concentrated in commercial real estate.

Pension and Other Benefit Pl_10

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, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.30%	4.30%
Current medical cost trend rate	7.50%	7.50%
Ultimate medical cost trend rate	4.50%	4.50%
Year that the rate reaches the ultimate trend rate	2031	2031
Postretirement medical plan
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.30%	3.70%	4.20%
Return on plan assets	7.00%	7.00%	7.00%
Current medical cost trend rate	7.50%	7.00%	7.25%
Ultimate medical cost trend rate	4.50%	5.00%	5.00%
Year that the rate reaches the ultimate trend rate	2031	2026	2026

Pension and Other Benefit Pl_11

Pension and Other Benefit Plans - Changes in Accumulated Postretirement Benefit Obligation, Plan Assets and Funded Status (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Change in Plan Assets
Benefits paid	$ (257)
Postretirement medical plan
Change in Projected Benefit Obligations
Projected benefit obligation at beginning of year		$ 1,106	$ 1,213
Service cost		29	32	$ 29
Interest cost		45	43	46
Contribution by plan participants		8	8
Actuarial (gains) losses		65	(128)
Benefits paid		(60)	(62)
Projected benefit obligation at end of year	1,193	1,193	1,106	1,213
Change in Plan Assets
Plan assets at fair value at beginning of year		997	1,094
Actual return on plan assets		240	(44)
Company contributions			1
Contributions by plan participants		8	8
Benefits paid		(60)	(62)
Plan assets at fair value at end of year	1,185	1,185	997	$ 1,094
Unfunded Liability	(8)	(8)	(109)
Amounts Recognized in Accumulated Other Comprehensive Loss
Actuarial losses	(98)	(98)	14
Prior service credit	(158)	(158)	(186)
Total amount recognized in accumulated other comprehensive income	$ (256)	$ (256)	$ (172)

Pension and Other Benefit Pl_12

Pension and Other Benefit Plans - Expected Benefits to be Paid Under US and International Pension Plans and Postretirement Medical Plan (Detail) $ in Millions	Dec. 31, 2019USD ($)
Postretirement medical plan
Defined Benefit Plan Disclosure [Line Items]
2020	$ 52
2021	54
2022	55
2023	56
2024	57
2025-2029	317
US
Defined Benefit Plan Disclosure [Line Items]
2020	218
2021	221
2022	225
2023	229
2024	233
2025-2029	1,213
International
Defined Benefit Plan Disclosure [Line Items]
2020	333
2021	343
2022	353
2023	365
2024	366
2025-2029	$ 2,057

Supplementary Information - Cas

Supplementary Information - Cash Paid (Refunded) for Interest and Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting [Abstract]
Interest	$ 558	$ 592	$ 572
Income tax	$ 739	$ 628	$ (44)

Supplementary Information - Int

Supplementary Information - Interest and Other Income (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting [Abstract]
Interest income	$ 41	$ 60	$ 128
Earnings of equity method investments	45	89	96
Interest and other income, net	$ 86	$ 149	$ 224

Supplementary Information - Cha

Supplementary Information - Change in Allowance for Doubtful Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting [Abstract]
Balance at beginning of year	$ 249	$ 241	$ 397
Additions	5	15	7
Amounts written off	1	(7)	(163)
Balance at end of year	$ 255	$ 249	$ 241

Supplementary Information - Add

Supplementary Information - Additional Information (Detail) - USD ($) $ in Billions	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting [Abstract]
Revenue in excess of billings	$ 0.2	$ 0.2

Supplementary Information - Acc

Supplementary Information - Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting [Abstract]
Trade	$ 4,790	$ 4,709
Payroll, vacation and employee benefits	1,293	1,244
Billings and cash collections in excess of revenue	910	877
Other	3,670	3,393
Accounts payable and accrued liabilities	$ 10,663	$ 10,223