Schlumberger Limited (SLB) 10-Q 25 Jul 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information	6 Months Ended
	Jun. 30, 2018shares
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Trading Symbol	SLB
Entity Registrant Name	SCHLUMBERGER LIMITED/NV
Entity Central Index Key	87,347
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	1,384,118,911

CONSOLIDATED STATEMENT OF INCOM

CONSOLIDATED STATEMENT OF INCOME (LOSS) (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue
Total Revenue	$ 8,303	$ 7,462	$ 16,131	$ 14,356
Interest & other income	40	62	82	108
Expenses
Research & engineering	175	196	347	406
General & administrative	114	110	225	208
Impairments & other	184	510	184	510
Merger & integration		81		164
Interest	144	142	287	281
Income before taxes	547	17	1,190	351
Tax expense	106	98	219	148
Net income (loss)	441	(81)	971	203
Net income (loss) attributable to noncontrolling interests	11	(7)	16	(2)
Net income (loss) attributable to Schlumberger	$ 430	$ (74)	$ 955	$ 205
Basic earnings (loss) per share of Schlumberger	$ 0.31	$ (0.05)	$ 0.69	$ 0.15
Diluted earnings (loss) per share of Schlumberger	$ 0.31	$ (0.05)	$ 0.69	$ 0.15
Average shares outstanding:
Basic	1,384	1,387	1,385	1,390
Assuming dilution	1,392	1,387	1,393	1,397
Services
Revenue
Total Revenue	$ 6,141	$ 5,477	$ 11,876	$ 10,414
Expenses
Cost of services and sales	5,196	4,624	10,076	8,875
Product
Revenue
Total Revenue	2,162	1,985	4,255	3,942
Expenses
Cost of services and sales	$ 1,983	$ 1,844	$ 3,904	$ 3,669

CONSOLIDATED STATEMENT OF COMPR

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 441	$ (81)	$ 971	$ 203
Currency translation adjustments
Unrealized net change arising during the period	(121)	(71)	(81)	(26)
Marketable securities
Unrealized loss arising during the period	(40)	(21)	(21)	(25)
Cash flow hedges
Net gain (loss) on cash flow hedges	(15)		(10)	11
Reclassification to net income (loss) of net realized (gain) loss	(1)	8	(5)	8
Pension and other postretirement benefit plans
Amortization to net income of net actuarial loss	37	36	94	79
Amortization to net income of net prior service (credit) cost	(1)	20	(3)	40
Income taxes on pension and other postretirement benefit plans	(5)	(1)	(5)	(2)
Comprehensive income (loss)	295	(110)	940	288
Comprehensive income (loss) attributable to noncontrolling interests	11	(7)	16	(2)
Comprehensive income (loss) attributable to Schlumberger	$ 284	$ (103)	$ 924	$ 290

CONSOLIDATED BALANCE SHEET

CONSOLIDATED BALANCE SHEET - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Current Assets
Cash	$ 1,461	$ 1,799
Short-term investments	1,588	3,290
Receivables less allowance for doubtful accounts (2018 - $249; 2017 - $241)	8,606	8,084
Inventories	4,120	4,046
Other current assets	1,125	1,278
Current assets total	16,900	18,497
Investments in Affiliated Companies	1,487	1,519
Fixed Assets less accumulated depreciation	11,504	11,576
Multiclient Seismic Data	686	727
Goodwill	25,121	25,118
Intangible Assets	9,092	9,354
Other Assets	5,366	5,196
Total Assets	70,156	71,987
Current Liabilities
Accounts payable and accrued liabilities	9,367	10,036
Estimated liability for taxes on income	1,264	1,223
Short-term borrowings and current portion of long-term debt	3,736	3,324
Dividends payable	699	699
Current Liabilities Total	15,066	15,282
Long-term Debt	13,865	14,875
Postretirement Benefits	971	1,082
Deferred Taxes	1,541	1,650
Other Liabilities	1,816	1,837
Total Liabilities	33,259	34,726
Equity
Common stock	13,030	12,975
Treasury stock	(4,001)	(4,049)
Retained earnings	31,760	32,190
Accumulated other comprehensive loss	(4,305)	(4,274)
Schlumberger stockholders' equity	36,484	36,842
Noncontrolling interests	413	419
Total equity	36,897	37,261
Liabilities and stockholders equity	$ 70,156	$ 71,987

CONSOLIDATED BALANCE SHEET (Par

CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts on receivable	$ 249	$ 241

CONSOLIDATED STATEMENT OF CASH

CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income		$ 971	$ 203
Adjustments to reconcile net income to cash provided by operating activities:
Impairments and other charges		184	674
Depreciation and amortization	[1]	1,750	1,975
Stock-based compensation expense		176	180
Pension and other postretirement benefits funding		(74)	(74)
Earnings of equity method investments, less dividends received		(26)	(30)
Change in assets and liabilities:
Increase in receivables	[2]	(284)	(406)
Increase in inventories	[2]	(71)	(51)
Decrease (increase) in other current assets	[2]	66	(123)
Increase in other assets	[2]	(120)	(140)
Decrease in accounts payable and accrued liabilities	[2]	(1,015)	(738)
Decrease in estimated liability for taxes on income	[2]	(34)	(21)
Decrease in other liabilities	[2]	(10)	(37)
Other	[2]	42	102
NET CASH PROVIDED BY OPERATING ACTIVITIES		1,555	1,514
Cash flows from investing activities:
Capital expenditures		(974)	(884)
SPM investments		(434)	(328)
Multiclient seismic data costs capitalized		(47)	(190)
Business acquisitions and investments, net of cash acquired		(47)	(364)
Sale of investments, net		1,692	2,245
Other		(20)	(61)
NET CASH PROVIDED BY INVESTING ACTIVITIES		170	418
Cash flows from financing activities:
Dividends paid		(1,385)	(1,393)
Proceeds from employee stock purchase plan		107	96
Proceeds from exercise of stock options		26	47
Stock repurchase program		(200)	(770)
Proceeds from issuance of long-term debt		14	625
Repayment of long-term debt		(467)	(475)
Net decrease in short-term borrowings		(106)	(1,097)
Other		(40)	(2)
NET CASH USED IN FINANCING ACTIVITIES		(2,051)	(2,969)
Net decrease in cash before translation effect		(326)	(1,037)
Translation effect on cash		(12)	11
Cash, beginning of period		1,799	2,929
Cash, end of period		$ 1,461	$ 1,903
[1]	Includes depreciation of property, plant and equipment and amortization of intangible assets, multiclient seismic data costs and SPM investments.
[2]	Net of the effect of business acquisitions.

CONSOLIDATED STATEMENT OF EQUIT

CONSOLIDATED STATEMENT OF EQUITY (Unaudited) - 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
Net income	203			205		(2)
Currency translation adjustments	(26)				(26)
Changes in unrealized gain on marketable securities	(25)				(25)
Changes in fair value of cash flow hedges	19				19
Pension and other postretirement benefit plans	117				117
Shares sold to optionees, less shares exchanged	47	(33)	80
Vesting of restricted stock		(80)	80
Shares issued under employee stock purchase plan	96	(12)	108
Stock repurchase program	(770)		(770)
Stock-based compensation expense	180	180
Dividends declared	(1,391)			(1,391)
Other	(27)	(13)	3			(17)
Balance at Jun. 30, 2017	39,952	12,843	(4,049)	35,284	(4,558)	432
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	$ 971			955		16
Currency translation adjustments	(82)				(81)	(1)
Changes in unrealized gain on marketable securities	(21)				(21)
Changes in fair value of cash flow hedges	(15)				(15)
Pension and other postretirement benefit plans	86				86
Shares sold to optionees, less shares exchanged	$ 26	$ (27)	53
Vesting of restricted stock		(52)	$ 52
Vesting of restricted stock, shares	1		1
Shares issued under employee stock purchase plan	$ 107	(33)	$ 140
Shares issued under employee stock purchase plan, shares	2		2
Stock repurchase program	$ (200)		$ (200)
Stock repurchase program, shares	(3)		(3)
Stock-based compensation expense	$ 176	176
Dividends declared	(1,385)			(1,385)
Other	(27)	(9)	$ 3			(21)
Balance at Jun. 30, 2018	$ 36,897	$ 13,030	$ (4,001)	$ 31,760	$ (4,305)	$ 413
Balance, shares at Jun. 30, 2018	1,384	1,434
Treasury shares, Balance at Jun. 30, 2018	(50)

CONSOLIDATED STATEMENT OF EQUI8

CONSOLIDATED STATEMENT OF EQUITY (Parenthetical) (Unaudited) - $ / shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Retained Earnings
Dividends declared, per share	$ 1	$ 1

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	1. Basis of Presentation The accompanying unaudited consolidated financial statements of Schlumberger Limited and its subsidiaries (Schlumberger) have been prepared in accordance with generally accepted accounting principles in the United States of America for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of Schlumberger management, all adjustments considered necessary for a fair statement have been included in the accompanying unaudited financial statements. All intercompany transactions and balances have been eliminated in consolidation. Operating results for the six-month period ended June 30, 2018 are not necessarily indicative of the results that may be expected for the full year ending December 31, 2018. The December 31, 2017 balance sheet information has been derived from the Schlumberger 2017 audited financial statements. For further information, refer to the Consolidated Financial Statements Recently Adopted Accounting Pronouncement In May 2014, the Financial Accounting Standards Board (“FASB”) issued 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 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. Revenue in excess of billings related to contracts where revenue is recognized over time was $0.2 billion at June 30, 2018 and $0.3 billion at December 31, 2017. Such amounts are included within Receivables less allowance for doubtful accounts Consolidated Balance Sheet Due to the nature of its business, Schlumberger does not have significant backlog. Total backlog was $2.5 billion at June 30, 2018, of which approximately 56% is expected to be recognized as revenue over the next 12 months. Billings and cash collections in excess of revenue was $0.8 billion at both June 30, 2018 and December 31, 2017. Such amounts are included within Accounts payable and accrued liabilities Consolidated Balance Sheet Recently Issued Accounting Pronouncement In February 2016, the FASB issued ASU No. 2016-02, Leases Consolidated Balance Sheet

Charges and Credits

Charges and Credits	6 Months Ended
	Jun. 30, 2018
Restructuring And Related Activities [Abstract]
Charges and Credits	2. Charges and Credits 2018 During the second quarter of 2018, Schlumberger recorded a $184 million pretax charge ($164 million after-tax) associated with headcount reductions, primarily to further streamline its support cost structure. This charge is classified in Impairments & other Consolidated Statement of Income (Loss) There were no charges or credits recorded during the first quarter of 2018. 2017 Schlumberger recorded the following charges and credits during the first six months of 2017: Second quarter of 2017: • 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 a promissory note with a three-year term that bears interest at the rate of 6.50% per annum. Schlumberger recorded this note at its estimated fair value on the date of the exchange, which resulted in a charge of $460 million. Schlumberger is accounting for the promissory note as an available-for-sale security reported at fair value in Other Assets, Accumulated other comprehensive loss During the second quarter of 2017, Schlumberger also entered into discussions with another customer relating to certain of its outstanding accounts receivable. As a result of those discussions, Schlumberger recorded a charge of $50 million to adjust these receivables to their estimated net realizable value. These charges are classified in Impairments & other Consolidated Statement of Income (Loss). • In connection with Schlumberger’s 2016 acquisition of Cameron International Corporation (“Cameron”), Schlumberger recorded $81 million of charges Merger & integration Consolidated Statement of Income (Loss) First quarter of 2017: • In connection with Schlumberger’s acquisition of Cameron, Schlumberger recorded $82 million of charges during the first quarter of 2017 relating to employee benefits, facility closures and other merger and integration-related costs. These charges are classified in Merger & integration Consolidated Statement of Income The following is a summary of the charges and credits recorded during the first six months of 2017: (Stated in millions) Noncontrolling Pretax Tax Interests Net Promissory note fair value adjustment and other $ 510 $ - $ 12 $ 498 Merger & integration 164 31 - 133 $ 674 $ 31 $ 12 $ 631 • 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 changed 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 consisted 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 represents a reasonable estimate of the impact of the income tax effects of the Act on Schlumberger’s Consolidated Financial Statements Taxes on income

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share	3. Earnings Per Share The following is a reconciliation from basic earnings (loss) per share of Schlumberger to diluted earnings (loss) per share of Schlumberger: (Stated in millions, except per share amounts) 2018 2017 Schlumberger Net Income Average Shares Outstanding Earnings per Share Schlumberger Net Loss Average Shares Outstanding Loss per Share Second Quarter Basic $ 430 1,384 $ 0.31 $ (74 ) 1,387 $ (0.05 ) Assumed exercise of stock options - 1 - - Unvested restricted stock - 7 - - Diluted $ 430 1,392 $ 0.31 $ (74 ) 1,387 $ (0.05 ) 2018 2017 Schlumberger Net Income Average Shares Outstanding Earnings per Share Schlumberger Net Income Average Shares Outstanding Earnings per Share Six Months Basic $ 955 $ 1,385 $ 0.69 $ 205 $ 1,390 $ 0.15 Assumed exercise of stock options - 1 - 2 Unvested restricted stock - 7 - 5 Diluted $ 955 $ 1,393 $ 0.69 $ 205 $ 1,397 $ 0.15 The number of outstanding options to purchase shares of Schlumberger common stock that were not included in the computation of diluted earnings per share, because to do so would have had an antidilutive effect, was as follows: (Stated in millions) 2018 2017 Second Quarter 38 49 Six Months 38 29

Inventories

Inventories	6 Months Ended
	Jun. 30, 2018
Inventory Disclosure [Abstract]
Inventories	4. Inventories A summary of inventories, which are stated at the lower of average cost or net realizable value, follows: (Stated in millions) Jun. 30, Dec. 31, 2018 2017 Raw materials & field materials $ 1,853 $ 1,846 Work in progress 525 503 Finished goods 1,742 1,697 $ 4,120 $ 4,046

Fixed Assets

Fixed Assets	6 Months Ended
	Jun. 30, 2018
Property Plant And Equipment [Abstract]
Fixed Assets	5. Fixed Assets A summary of fixed assets follows: (Stated in millions) Jun. 30, Dec. 31, 2018 2017 Property, plant & equipment $ 38,191 $ 37,813 Less: Accumulated depreciation 26,687 26,237 $ 11,504 $ 11,576 Depreciation expense relating to fixed assets was as follows: (Stated in millions) 2018 2017 Second Quarter $ 525 $ 592 Six Months $ 1,048 $ 1,205

Multiclient Seismic Data

Multiclient Seismic Data	6 Months Ended
	Jun. 30, 2018
Multiclient Seismic Data [Abstract]
Multiclient Seismic Data	6. Multiclient Seismic Data The change in the carrying amount of multiclient seismic data for the six months ended June 30, 2018 was as follows: (Stated in millions) Balance at December 31, 2017 $ 727 Capitalized in period 47 Charged to expense (88 ) Balance at June 30, 2018 $ 686

Intangible Assets

Intangible Assets	6 Months Ended
	Jun. 30, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets	7. Intangible Assets The gross book value, accumulated amortization and net book value of intangible assets were as follows: (Stated in millions) Jun. 30, 2018 Dec. 31, 2017 Gross Accumulated Net Book Gross Accumulated Net Book Book Amortization Value Book Value Amortization Value Customer relationships $ 4,814 $ 1,129 $ 3,685 $ 4,832 $ 1,020 $ 3,812 Technology/technical know-how 3,578 1,137 2,441 3,634 1,078 2,556 Tradenames 2,806 584 2,222 2,806 533 2,273 Other 1,325 581 744 1,295 582 713 $ 12,523 $ 3,431 $ 9,092 $ 12,567 $ 3,213 $ 9,354 Amortization expense charged to income was as follows: (Stated in millions) 2018 2017 Second Quarter $ 174 $ 167 Six Months $ 339 $ 336 Based on the net book value of intangible assets at June 30, 2018, amortization charged to income for the subsequent five years is estimated to be: remaining two quarters of 2018—$346 million; 2019—$682 million; 2020—$648 million; 2021—$617 million; 2022—$610 million; and 2023—$600 million.

Long-term Debt

Long-term Debt	6 Months Ended
	Jun. 30, 2018
Debt Disclosure [Abstract]
Long-term Debt	8. Long-term Debt A summary of Long-term Debt (Stated in millions) Jun. 30, Dec. 31, 2018 2017 4.00% Senior Notes due 2025 $ 1,742 $ 1,741 3.30% Senior Notes due 2021 1,595 1,595 3.00% Senior Notes due 2020 1,595 1,593 3.65% Senior Notes due 2023 1,493 1,492 4.20% Senior Notes due 2021 1,100 1,100 2.40% Senior Notes due 2022 997 996 3.63% Senior Notes due 2022 846 846 2.65% Senior Notes due 2022 598 598 2.20% Senior Notes due 2020 498 498 7.00% Notes due 2038 211 212 4.50% Notes due 2021 134 135 5.95% Notes due 2041 115 115 3.60% Notes due 2022 109 110 5.13% Notes due 2043 99 99 4.00% Notes due 2023 82 82 3.70% Notes due 2024 56 56 0.63% Guaranteed Notes due 2019 - 712 1.50% Guaranteed Notes due 2019 - 603 Commercial paper borrowings 2,200 1,694 Other 395 598 $ 13,865 $ 14,875 The estimated fair value of Schlumberger’s Long-term Debt, Borrowings under Schlumberger’s commercial paper programs June 30, 2018 were $2.9 billion, of which $0.7 billion was classified in Short-term borrowings and current portion of long-term debt Consolidated Balance Sheet Short-term borrowings and current portion of long-term debt Consolidated Balance Sheet

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	6 Months Ended
	Jun. 30, 2018
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	9. Derivative Instruments and Hedging Activities Schlumberger is exposed to market risks related to fluctuations in foreign currency exchange rates and interest rates. To mitigate these risks, Schlumberger utilizes derivative instruments. Schlumberger does not enter into derivative transactions for speculative purposes. Interest Rate Risk Schlumberger is subject to interest rate risk on its debt and its investment portfolio. Schlumberger maintains an interest rate risk management strategy that uses a mix of variable and fixed rate debt combined with its investment portfolio, and occasionally interest rate swaps, to mitigate the exposure to changes in interest rates. During 2013, Schlumberger entered into a cross-currency swap for a notional amount of €0.5 billion in order to hedge changes in the fair value of Schlumberger’s €0.5 billion 1.50% Guaranteed Notes due 2019. Under the terms of this swap, Schlumberger will receive interest at a fixed rate of 1.50% on the euro notional amount and pay interest at a floating rate of three-month LIBOR plus approximately 64 basis points on the US dollar notional amount. This cross-currency swap is designated as a fair value hedge of the underlying debt and is marked to market, with gains and losses recognized immediately in income to largely offset the effects on changes in the fair value of the hedged debt. 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 2.20% Senior Notes due 2020 and its $0.6 billion 2.65% Senior Notes due 2022. These cross-currency swaps effectively convert the US dollar notes to Canadian dollar denominated debt with fixed annual interest rates of 1.97% and 2.52%, respectively. These cross-currency swaps are designated as cash flow hedges. The changes in the fair values of the hedges are recorded on the Consolidated Balance Sheet Accumulated Other Comprehensive Loss. Accumulated Other Comprehensive Loss At June 30, 2018, Schlumberger had fixed rate debt aggregating $13.5 billion and variable rate debt aggregating $4.1 billion, after taking into account the effect of interest rate swaps. Short-term investments were $1.6 billion at June 30, 2018. The carrying value of these investments approximated fair value. Foreign Currency Exchange Rate Risk As a multinational company, Schlumberger conducts its business in more than 85 countries. Schlumberger’s functional currency is primarily the US dollar. However, outside the United States, a significant portion of Schlumberger’s expenses is incurred in foreign currencies. Therefore, when the US dollar weakens (strengthens) in relation to the foreign currencies of the countries in which Schlumberger conducts business, the US dollar-reported expenses will increase (decrease). Schlumberger is exposed to risks on future cash flows to the extent that the local currency is not the functional currency and expenses denominated in local currency are not equal to revenues denominated in local currency. Schlumberger is also exposed to risks on future cash flows relating to certain of its fixed rate debt denominated in currencies other than the functional 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 At June 30, 2018, Schlumberger recognized a cumulative net $12 million loss in Accumulated Other Comprehensive Loss At June 30, 2018, contracts were outstanding for the US dollar equivalent of $4.7 billion in various foreign currencies, of which $1.8 billion relates to hedges of debt denominated in currencies other than the functional currency. The effect of derivative instruments designated as fair value and cash flow hedges, and those not designated as hedges, on the Consolidated Statement of Income (Stated in millions) Gain (Loss) Recognized in Income (Loss) Second Quarter Six Months 2018 2017 2018 2017 Consolidated Statement of Income Classification Derivatives designated as fair value hedges: Cross currency swap $ (39 ) $ 29 $ (12 ) $ 47 Interest expense Derivatives designated as cash flow hedges: Foreign exchange contracts $ 1 $ - $ 5 $ - Cost of services/sales Cross currency swap 36 - 55 - Interest expense $ 37 $ - $ 60 $ - Derivatives not designated as hedges: Foreign exchange contracts $ 4 $ 1 $ 32 $ 7 Cost of services/sales

Contingencies

Contingencies	6 Months Ended
	Jun. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Contingencies	10. Contingencies Schlumberger and its subsidiaries are 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	6 Months Ended
	Jun. 30, 2018
Segment Reporting [Abstract]
Segment Information	11. Segment Information (Stated in millions) Second Quarter 2018 Second Quarter 2017 Income Income Before Before Revenue Taxes Revenue Taxes Reservoir Characterization $ 1,636 $ 350 $ 1,759 $ 299 Drilling 2,234 289 2,107 302 Production 3,257 316 2,496 221 Cameron 1,295 166 1,265 174 Eliminations & other (119 ) (27 ) (165 ) (46 ) Pretax operating income 1,094 950 Corporate & other (1) (239 ) (242 ) Interest income (2) 11 28 Interest expense (3) (135 ) (128 ) Charges and credits (4) (184 ) (591 ) $ 8,303 $ 547 $ 7,462 $ 17 (1) Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets, certain centrally managed initiatives and other nonoperating items. (2) Interest income excludes amounts which are included in the segments’ income ($1 million in 2018; $6 million in 2017). (3) Interest expense excludes amounts which are included in the segments’ income ($9 million in 2018; $14 million in 2017). (4) See Note 2 – Charges and Credits . (Stated in millions) Six Months 2018 Six Months 2017 Income Income Before Before Revenue Taxes Revenue Taxes Reservoir Characterization $ 3,192 $ 657 $ 3,377 $ 580 Drilling 4,360 582 4,092 531 Production 6,216 532 4,683 331 Cameron 2,605 332 2,494 336 Eliminations & other (242 ) (35 ) (290 ) (71 ) Pretax operating income 2,068 1,707 Corporate & other (1) (464 ) (480 ) Interest income (2) 36 52 Interest expense (3) (266 ) (254 ) Charges and credits (4) (184 ) (674 ) $ 16,131 $ 1,190 $ 14,356 $ 351 (1) Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets, certain centrally managed initiatives and other nonoperating items. (2) Interest income excludes amounts which are included in the segments’ income ($4 million in 2018; $11 million in 2017). (3) Interest expense excludes amounts which are included in the segments’ income ($21 million in 2018; $27 million in 2017). (4) See Note 2 – Charges and Credits . Revenue by geographic area was as follows: (Stated in millions) Second Quarter Six Months 2018 2017 2018 2017 North America $ 3,139 $ 2,202 $ 5,974 $ 4,074 Latin America 919 1,039 1,790 1,991 Europe/CIS/Africa 1,778 1,750 3,482 3,401 Middle East & Asia 2,367 2,347 4,676 4,666 Eliminations & other 100 124 209 224 $ 8,303 $ 7,462 $ 16,131 $ 14,356 North America and International revenue disaggregated by Group was as follows: (Stated in millions) Second Quarter 2018 North Eliminations America International & other Total Reservoir Characterization $ 269 $ 1,233 $ 134 $ 1,636 Drilling 568 1,612 54 2,234 Production 1,695 1,560 2 3,257 Cameron 611 707 (23 ) 1,295 Other (4 ) (48 ) (67 ) (119 ) $ 3,139 $ 5,064 $ 100 $ 8,303 Second Quarter 2017 North Eliminations America International & other Total Reservoir Characterization $ 217 $ 1,372 $ 170 $ 1,759 Drilling 485 1,565 57 2,107 Production 1,032 1,475 (11 ) 2,496 Cameron 474 788 3 1,265 Other (6 ) (64 ) (95 ) (165 ) $ 2,202 $ 5,136 $ 124 $ 7,462 (Stated in millions) Six Months 2018 North Eliminations America International & other Total Reservoir Characterization $ 491 $ 2,429 $ 272 $ 3,192 Drilling 1,132 3,125 103 4,360 Production 3,195 3,018 3 6,216 Cameron 1,180 1,461 (36 ) 2,605 Other (24 ) (85 ) (133 ) (242 ) $ 5,974 $ 9,948 $ 209 $ 16,131 Six Months 2017 North Eliminations America International & other Total Reservoir Characterization $ 448 $ 2,639 $ 290 $ 3,377 Drilling 940 3,034 118 4,092 Production 1,770 2,927 (14 ) 4,683 Cameron 919 1,581 (6 ) 2,494 Other (3 ) (123 ) (164 ) (290 ) $ 4,074 $ 10,058 $ 224 $ 14,356

Pension and Other Postretiremen

Pension and Other Postretirement Benefit Plans	6 Months Ended
	Jun. 30, 2018
Compensation And Retirement Disclosure [Abstract]
Pension and Other Postretirement Benefit Plans	12. Pension and Other Postretirement Benefit Plans Net pension cost (credit) for the Schlumberger pension plans included the following components: (Stated in millions) Second Quarter Six Months 2018 2017 2018 2017 US Int'l US Int'l US Int'l US Int'l Service cost $ 14 $ 38 $ 14 $ 19 $ 30 $ 70 $ 29 $ 48 Interest cost 41 76 44 75 84 152 88 153 Expected return on plan assets (63 ) (149 ) (62 ) (134 ) (125 ) (293 ) (122 ) (270 ) Amortization of prior service cost 3 3 3 24 6 5 6 48 Amortization of net loss 12 27 9 27 24 70 19 60 $ 7 $ (5 ) $ 8 $ 11 $ 19 $ 4 $ 20 $ 39 The net periodic benefit credit for the Schlumberger US postretirement medical plan included the following components: (Stated in millions) Second Quarter Six Months 2018 2017 2018 2017 Service cost $ 8 $ 7 $ 16 $ 15 Interest cost 10 12 22 23 Expected return on plan assets (16 ) (16 ) (32 ) (31 ) Amortization of prior service credit (7 ) (7 ) (14 ) (14 ) $ (5 ) $ (4 ) $ (8 ) $ (7 )

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	6 Months Ended
	Jun. 30, 2018
Equity [Abstract]
Accumulated Other Comprehensive Loss	13. 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, 2018 $ (2,139 ) $ 13 $ 3 $ (2,151 ) $ (4,274 ) Other comprehensive loss before reclassifications (81 ) (21 ) (10 ) - (112 ) Amounts reclassified from accumulated other comprehensive loss - - (5 ) 86 81 Net other comprehensive income (81 ) (21 ) (15 ) 86 (31 ) Balance, June 30, 2018 $ (2,220 ) $ (8 ) $ (12 ) $ (2,065 ) $ (4,305 ) 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 gain (loss) before reclassifications (26 ) (25 ) 11 - (40 ) Amounts reclassified from accumulated other comprehensive loss - - 8 117 125 Net other comprehensive income (26 ) (25 ) 19 117 85 Balance, June 30, 2017 $ (2,162 ) $ (4 ) $ - $ (2,392 ) $ (4,558 )

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Recently Adopted Accounting Pronouncement	Recently Adopted Accounting Pronouncement In May 2014, the Financial Accounting Standards Board (“FASB”) issued 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 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. Revenue in excess of billings related to contracts where revenue is recognized over time was $0.2 billion at June 30, 2018 and $0.3 billion at December 31, 2017. Such amounts are included within Receivables less allowance for doubtful accounts Consolidated Balance Sheet Due to the nature of its business, Schlumberger does not have significant backlog. Total backlog was $2.5 billion at June 30, 2018, of which approximately 56% is expected to be recognized as revenue over the next 12 months. Billings and cash collections in excess of revenue was $0.8 billion at both June 30, 2018 and December 31, 2017. Such amounts are included within Accounts payable and accrued liabilities Consolidated Balance Sheet
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncement In February 2016, the FASB issued ASU No. 2016-02, Leases Consolidated Balance Sheet

Charges and Credits (Tables)

Charges and Credits (Tables)	6 Months Ended
	Jun. 30, 2018
Restructuring And Related Activities [Abstract]
Summary of Charges and Credits	The following is a summary of the charges and credits recorded during the first six months of 2017: (Stated in millions) Noncontrolling Pretax Tax Interests Net Promissory note fair value adjustment and other $ 510 $ - $ 12 $ 498 Merger & integration 164 31 - 133 $ 674 $ 31 $ 12 $ 631

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Reconciliation of Earnings (Loss) Per Share	The following is a reconciliation from basic earnings (loss) per share of Schlumberger to diluted earnings (loss) per share of Schlumberger: (Stated in millions, except per share amounts) 2018 2017 Schlumberger Net Income Average Shares Outstanding Earnings per Share Schlumberger Net Loss Average Shares Outstanding Loss per Share Second Quarter Basic $ 430 1,384 $ 0.31 $ (74 ) 1,387 $ (0.05 ) Assumed exercise of stock options - 1 - - Unvested restricted stock - 7 - - Diluted $ 430 1,392 $ 0.31 $ (74 ) 1,387 $ (0.05 ) 2018 2017 Schlumberger Net Income Average Shares Outstanding Earnings per Share Schlumberger Net Income Average Shares Outstanding Earnings per Share Six Months Basic $ 955 $ 1,385 $ 0.69 $ 205 $ 1,390 $ 0.15 Assumed exercise of stock options - 1 - 2 Unvested restricted stock - 7 - 5 Diluted $ 955 $ 1,393 $ 0.69 $ 205 $ 1,397 $ 0.15
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The number of outstanding options to purchase shares of Schlumberger common stock that were not included in the computation of diluted earnings per share, because to do so would have had an antidilutive effect, was as follows: (Stated in millions) 2018 2017 Second Quarter 38 49 Six Months 38 29

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2018
Inventory Disclosure [Abstract]
Summary of Inventory	A summary of inventories, which are stated at the lower of average cost or net realizable value, follows: (Stated in millions) Jun. 30, Dec. 31, 2018 2017 Raw materials & field materials $ 1,853 $ 1,846 Work in progress 525 503 Finished goods 1,742 1,697 $ 4,120 $ 4,046

Fixed Assets (Tables)

Fixed Assets (Tables)	6 Months Ended
	Jun. 30, 2018
Property Plant And Equipment [Abstract]
Summary of Fixed Assets	A summary of fixed assets follows: (Stated in millions) Jun. 30, Dec. 31, 2018 2017 Property, plant & equipment $ 38,191 $ 37,813 Less: Accumulated depreciation 26,687 26,237 $ 11,504 $ 11,576
Depreciation Expense Relating to Fixed Assets	Depreciation expense relating to fixed assets was as follows: (Stated in millions) 2018 2017 Second Quarter $ 525 $ 592 Six Months $ 1,048 $ 1,205

Multiclient Seismic Data (Table

Multiclient Seismic Data (Tables)	6 Months Ended
	Jun. 30, 2018
Multiclient Seismic Data [Abstract]
Change in Carrying Amount of Multiclient Seismic Data	The change in the carrying amount of multiclient seismic data for the six months ended June 30, 2018 was as follows: (Stated in millions) Balance at December 31, 2017 $ 727 Capitalized in period 47 Charged to expense (88 ) Balance at June 30, 2018 $ 686

Intangible Assets (Tables)

Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets by Major Class	The gross book value, accumulated amortization and net book value of intangible assets were as follows: (Stated in millions) Jun. 30, 2018 Dec. 31, 2017 Gross Accumulated Net Book Gross Accumulated Net Book Book Amortization Value Book Value Amortization Value Customer relationships $ 4,814 $ 1,129 $ 3,685 $ 4,832 $ 1,020 $ 3,812 Technology/technical know-how 3,578 1,137 2,441 3,634 1,078 2,556 Tradenames 2,806 584 2,222 2,806 533 2,273 Other 1,325 581 744 1,295 582 713 $ 12,523 $ 3,431 $ 9,092 $ 12,567 $ 3,213 $ 9,354
Amortization Expense Charged to Income for Intangible Assets	Amortization expense charged to income was as follows: (Stated in millions) 2018 2017 Second Quarter $ 174 $ 167 Six Months $ 339 $ 336

Long-term Debt (Tables)

Long-term Debt (Tables)	6 Months Ended
	Jun. 30, 2018
Debt Disclosure [Abstract]
Summary of Long-term Debt	A summary of Long-term Debt (Stated in millions) Jun. 30, Dec. 31, 2018 2017 4.00% Senior Notes due 2025 $ 1,742 $ 1,741 3.30% Senior Notes due 2021 1,595 1,595 3.00% Senior Notes due 2020 1,595 1,593 3.65% Senior Notes due 2023 1,493 1,492 4.20% Senior Notes due 2021 1,100 1,100 2.40% Senior Notes due 2022 997 996 3.63% Senior Notes due 2022 846 846 2.65% Senior Notes due 2022 598 598 2.20% Senior Notes due 2020 498 498 7.00% Notes due 2038 211 212 4.50% Notes due 2021 134 135 5.95% Notes due 2041 115 115 3.60% Notes due 2022 109 110 5.13% Notes due 2043 99 99 4.00% Notes due 2023 82 82 3.70% Notes due 2024 56 56 0.63% Guaranteed Notes due 2019 - 712 1.50% Guaranteed Notes due 2019 - 603 Commercial paper borrowings 2,200 1,694 Other 395 598 $ 13,865 $ 14,875

Derivative Instruments and He30

Derivative Instruments and Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 2018
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Effect of Derivative Instruments Designated as Fair Value and Cash Flow Hedges and Not Designated as Hedges on Consolidated Statement of Income	The effect of derivative instruments designated as fair value and cash flow hedges, and those not designated as hedges, on the Consolidated Statement of Income (Stated in millions) Gain (Loss) Recognized in Income (Loss) Second Quarter Six Months 2018 2017 2018 2017 Consolidated Statement of Income Classification Derivatives designated as fair value hedges: Cross currency swap $ (39 ) $ 29 $ (12 ) $ 47 Interest expense Derivatives designated as cash flow hedges: Foreign exchange contracts $ 1 $ - $ 5 $ - Cost of services/sales Cross currency swap 36 - 55 - Interest expense $ 37 $ - $ 60 $ - Derivatives not designated as hedges: Foreign exchange contracts $ 4 $ 1 $ 32 $ 7 Cost of services/sales

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2018
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	(Stated in millions) Second Quarter 2018 Second Quarter 2017 Income Income Before Before Revenue Taxes Revenue Taxes Reservoir Characterization $ 1,636 $ 350 $ 1,759 $ 299 Drilling 2,234 289 2,107 302 Production 3,257 316 2,496 221 Cameron 1,295 166 1,265 174 Eliminations & other (119 ) (27 ) (165 ) (46 ) Pretax operating income 1,094 950 Corporate & other (1) (239 ) (242 ) Interest income (2) 11 28 Interest expense (3) (135 ) (128 ) Charges and credits (4) (184 ) (591 ) $ 8,303 $ 547 $ 7,462 $ 17 (1) Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets, certain centrally managed initiatives and other nonoperating items. (2) Interest income excludes amounts which are included in the segments’ income ($1 million in 2018; $6 million in 2017). (3) Interest expense excludes amounts which are included in the segments’ income ($9 million in 2018; $14 million in 2017). (4) See Note 2 – Charges and Credits . (Stated in millions) Six Months 2018 Six Months 2017 Income Income Before Before Revenue Taxes Revenue Taxes Reservoir Characterization $ 3,192 $ 657 $ 3,377 $ 580 Drilling 4,360 582 4,092 531 Production 6,216 532 4,683 331 Cameron 2,605 332 2,494 336 Eliminations & other (242 ) (35 ) (290 ) (71 ) Pretax operating income 2,068 1,707 Corporate & other (1) (464 ) (480 ) Interest income (2) 36 52 Interest expense (3) (266 ) (254 ) Charges and credits (4) (184 ) (674 ) $ 16,131 $ 1,190 $ 14,356 $ 351 (1) Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets, certain centrally managed initiatives and other nonoperating items. (2) Interest income excludes amounts which are included in the segments’ income ($4 million in 2018; $11 million in 2017). (3) Interest expense excludes amounts which are included in the segments’ income ($21 million in 2018; $27 million in 2017). (4) See Note 2 – Charges and Credits .
Revenue by Geographic Area	Revenue by geographic area was as follows: (Stated in millions) Second Quarter Six Months 2018 2017 2018 2017 North America $ 3,139 $ 2,202 $ 5,974 $ 4,074 Latin America 919 1,039 1,790 1,991 Europe/CIS/Africa 1,778 1,750 3,482 3,401 Middle East & Asia 2,367 2,347 4,676 4,666 Eliminations & other 100 124 209 224 $ 8,303 $ 7,462 $ 16,131 $ 14,356
Summary of North America and International Revenue Disaggregated by Group	North America and International revenue disaggregated by Group was as follows: (Stated in millions) Second Quarter 2018 North Eliminations America International & other Total Reservoir Characterization $ 269 $ 1,233 $ 134 $ 1,636 Drilling 568 1,612 54 2,234 Production 1,695 1,560 2 3,257 Cameron 611 707 (23 ) 1,295 Other (4 ) (48 ) (67 ) (119 ) $ 3,139 $ 5,064 $ 100 $ 8,303 Second Quarter 2017 North Eliminations America International & other Total Reservoir Characterization $ 217 $ 1,372 $ 170 $ 1,759 Drilling 485 1,565 57 2,107 Production 1,032 1,475 (11 ) 2,496 Cameron 474 788 3 1,265 Other (6 ) (64 ) (95 ) (165 ) $ 2,202 $ 5,136 $ 124 $ 7,462 (Stated in millions) Six Months 2018 North Eliminations America International & other Total Reservoir Characterization $ 491 $ 2,429 $ 272 $ 3,192 Drilling 1,132 3,125 103 4,360 Production 3,195 3,018 3 6,216 Cameron 1,180 1,461 (36 ) 2,605 Other (24 ) (85 ) (133 ) (242 ) $ 5,974 $ 9,948 $ 209 $ 16,131 Six Months 2017 North Eliminations America International & other Total Reservoir Characterization $ 448 $ 2,639 $ 290 $ 3,377 Drilling 940 3,034 118 4,092 Production 1,770 2,927 (14 ) 4,683 Cameron 919 1,581 (6 ) 2,494 Other (3 ) (123 ) (164 ) (290 ) $ 4,074 $ 10,058 $ 224 $ 14,356

Pension and Other Postretirem32

Pension and Other Postretirement Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2018
Compensation And Retirement Disclosure [Abstract]
Net Pension Cost (Credit) for Schlumberger Pension Plans and US Postretirement Medical Plan	Net pension cost (credit) for the Schlumberger pension plans included the following components: (Stated in millions) Second Quarter Six Months 2018 2017 2018 2017 US Int'l US Int'l US Int'l US Int'l Service cost $ 14 $ 38 $ 14 $ 19 $ 30 $ 70 $ 29 $ 48 Interest cost 41 76 44 75 84 152 88 153 Expected return on plan assets (63 ) (149 ) (62 ) (134 ) (125 ) (293 ) (122 ) (270 ) Amortization of prior service cost 3 3 3 24 6 5 6 48 Amortization of net loss 12 27 9 27 24 70 19 60 $ 7 $ (5 ) $ 8 $ 11 $ 19 $ 4 $ 20 $ 39 The net periodic benefit credit for the Schlumberger US postretirement medical plan included the following components: (Stated in millions) Second Quarter Six Months 2018 2017 2018 2017 Service cost $ 8 $ 7 $ 16 $ 15 Interest cost 10 12 22 23 Expected return on plan assets (16 ) (16 ) (32 ) (31 ) Amortization of prior service credit (7 ) (7 ) (14 ) (14 ) $ (5 ) $ (4 ) $ (8 ) $ (7 )

Accumulated Other Comprehensi33

Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Jun. 30, 2018
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, 2018 $ (2,139 ) $ 13 $ 3 $ (2,151 ) $ (4,274 ) Other comprehensive loss before reclassifications (81 ) (21 ) (10 ) - (112 ) Amounts reclassified from accumulated other comprehensive loss - - (5 ) 86 81 Net other comprehensive income (81 ) (21 ) (15 ) 86 (31 ) Balance, June 30, 2018 $ (2,220 ) $ (8 ) $ (12 ) $ (2,065 ) $ (4,305 ) 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 gain (loss) before reclassifications (26 ) (25 ) 11 - (40 ) Amounts reclassified from accumulated other comprehensive loss - - 8 117 125 Net other comprehensive income (26 ) (25 ) 19 117 85 Balance, June 30, 2017 $ (2,162 ) $ (4 ) $ - $ (2,392 ) $ (4,558 )

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Detail) - USD ($) $ in Billions	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Feb. 29, 2016
Organization And Summary Of Significant Accounting Policies [Line Items]
Total backlog	$ 2.5
Percentage of revenue expected to be recognized over next 12 months	56.00%
ASU No. 2016-02
Organization And Summary Of Significant Accounting Policies [Line Items]
New accounting pronouncement or change in accounting principle effect of additional assets and liabilities			$ 1.2
Receivables Less Allowance for Doubtful Accounts
Organization And Summary Of Significant Accounting Policies [Line Items]
Revenue in excess of billings	$ 0.2	$ 0.3
Accounts Payable and Accrued Liabilities
Organization And Summary Of Significant Accounting Policies [Line Items]
Billings and cash collections in excess of revenue	$ 0.8	$ 0.8
Minimum
Organization And Summary Of Significant Accounting Policies [Line Items]
Revenue recognition period	30 days
Maximum
Organization And Summary Of Significant Accounting Policies [Line Items]
Revenue recognition period	60 days

Charges and Credits - Additiona

Charges and Credits - Additional Information (Detail) - USD ($)	3 Months Ended					6 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2017	Dec. 31, 2017
Charges And Credits [Line Items]
Charges and credits, pre tax						$ 674,000,000
Charges and credits		$ 0		$ 50,000,000		631,000,000
Promissory note in exchange of accounts receivable				$ 700,000,000		$ 700,000,000
Promissory note term				3 years
Promissory note interest rate				6.50%		6.50%
Charge relating to one-time mandatory tax on previously deferred foreign earnings			$ 410,000,000				$ 410,000,000
Tax credits resulting from remeasurement of net deferred tax liabilities			334,000,000
US tax reform
Charges And Credits [Line Items]
Charges and credits			$ 76,000,000
US tax reform | Tax Year2018
Charges And Credits [Line Items]
Reduced corporate income tax rate							21.00%
Impairments and Other | Headcount Reductions
Charges And Credits [Line Items]
Charges and credits, pre tax	$ 184,000,000
Charges and credits	$ 164,000,000
Promissory Note Fair Value Adjustment and Other
Charges And Credits [Line Items]
Charges and credits, pre tax						$ 510,000,000
Charges and credits				$ 460,000,000		498,000,000
Merger and Integration
Charges And Credits [Line Items]
Charges and credits, pre tax						164,000,000
Charges and credits						$ 133,000,000
Merger and Integration | Cameron International Corporation
Charges And Credits [Line Items]
Charges and credits				$ 81,000,000
Merger and Integration | Merger-related employee benefits | Cameron International Corporation
Charges And Credits [Line Items]
Charges and credits					$ 82,000,000

Charges and Credits - Summary o

Charges and Credits - Summary of Charges and Credits (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2017
Charges And Credits [Line Items]
Charges and credits, Pretax			$ 674,000,000
Charges and credits, Tax			31,000,000
Charges and credits, Noncontrolling Interests			12,000,000
Charges and credits, Net	$ 0	$ 50,000,000	631,000,000
Promissory Note Fair Value Adjustment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax			510,000,000
Charges and credits, Noncontrolling Interests			12,000,000
Charges and credits, Net		$ 460,000,000	498,000,000
Merger and Integration
Charges And Credits [Line Items]
Charges and credits, Pretax			164,000,000
Charges and credits, Tax			31,000,000
Charges and credits, Net			$ 133,000,000

Earnings Per Share - Reconcilia

Earnings Per Share - Reconciliation of Earnings (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Schlumberger Net Income (Loss)
Basic	$ 430	$ (74)	$ 955	$ 205
Diluted	$ 430	$ (74)	$ 955	$ 205
Average Shares Outstanding
Basic	1,384	1,387	1,385	1,390
Assumed exercise of stock options	1		1	2
Unvested restricted stock	7		7	5
Diluted	1,392	1,387	1,393	1,397
Earnings (loss) per Share
Basic	$ 0.31	$ (0.05)	$ 0.69	$ 0.15
Diluted	$ 0.31	$ (0.05)	$ 0.69	$ 0.15

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount	38	49	38	29

Inventories - Summary of Invent

Inventories - Summary of Inventory (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Raw materials & field materials	$ 1,853	$ 1,846
Work in progress	525	503
Finished goods	1,742	1,697
Inventories	$ 4,120	$ 4,046

Fixed Assets - Summary of Fixed

Fixed Assets - Summary of Fixed Assets (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Property Plant And Equipment [Abstract]
Property, plant & equipment	$ 38,191	$ 37,813
Less: Accumulated depreciation	26,687	26,237
Fixed assets less accumulated depreciation	$ 11,504	$ 11,576

Fixed Assets - Depreciation Exp

Fixed Assets - Depreciation Expense Relating to Fixed Assets (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Property Plant And Equipment [Abstract]
Depreciation expense relating to fixed assets	$ 525	$ 592	$ 1,048	$ 1,205

Multiclient Seismic Data - Chan

Multiclient Seismic Data - Change in Carrying Amount of Multiclient Seismic Data (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2018USD ($)
Multiclient Seismic Data [Abstract]
Balance at December 31, 2017	$ 727
Capitalized in period	47
Charged to expense	(88)
Balance at June 30, 2018	$ 686

Intangible Assets - Schedule of

Intangible Assets - Schedule of Intangible Assets by Major Class (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Finite Lived Intangible Assets [Line Items]
Gross Book Value	$ 12,523	$ 12,567
Accumulated Amortization	3,431	3,213
Net Book Value	9,092	9,354
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross Book Value	4,814	4,832
Accumulated Amortization	1,129	1,020
Net Book Value	3,685	3,812
Technology/Technical Know-how
Finite Lived Intangible Assets [Line Items]
Gross Book Value	3,578	3,634
Accumulated Amortization	1,137	1,078
Net Book Value	2,441	2,556
Tradenames
Finite Lived Intangible Assets [Line Items]
Gross Book Value	2,806	2,806
Accumulated Amortization	584	533
Net Book Value	2,222	2,273
Other
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,325	1,295
Accumulated Amortization	581	582
Net Book Value	$ 744	$ 713

Intangible Assets - Amortizatio

Intangible Assets - Amortization Expense Charged to Income for Intangible Assets (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense	$ 174	$ 167	$ 339	$ 336

Intangible Assets - Additional

Intangible Assets - Additional Information (Detail) $ in Millions	Jun. 30, 2018USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Estimated amortization charged to income, remaining two quarters of 2018	$ 346
Estimated amortization charged to income, 2019	682
Estimated amortization charged to income, 2020	648
Estimated amortization charged to income, 2021	617
Estimated amortization charged to income, 2022	610
Estimated amortization charged to income, 2023	$ 600

Long-term Debt - Summary of Lon

Long-term Debt - Summary of Long-term Debt (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 13,865	$ 14,875
Commercial paper borrowings
Debt Instrument [Line Items]
Long-term debt, carrying amount	2,200	1,694
4.00% Senior Notes due 2025
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,742	1,741
3.30% Senior Notes due 2021
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,595	1,595
3.00% Senior Notes due 2020
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,595	1,593
3.65% Senior Notes due 2023
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,493	1,492
4.20% Senior Notes due 2021
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,100	1,100
2.40% Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt, carrying amount	997	996
3.63% Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt, carrying amount	846	846
2.65% Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt, carrying amount	598	598
2.20% Senior Notes due 2020
Debt Instrument [Line Items]
Long-term debt, carrying amount	498	498
7.00% Notes due 2038
Debt Instrument [Line Items]
Long-term debt, carrying amount	211	212
4.50% Notes due 2021
Debt Instrument [Line Items]
Long-term debt, carrying amount	134	135
5.95% Notes due 2041
Debt Instrument [Line Items]
Long-term debt, carrying amount	115	115
3.60% Notes due 2022
Debt Instrument [Line Items]
Long-term debt, carrying amount	109	110
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	82	82
3.70% Notes due 2024
Debt Instrument [Line Items]
Long-term debt, carrying amount	56	56
0.63% Guaranteed Notes due 2019
Debt Instrument [Line Items]
Long-term debt, carrying amount		712
1.50% Guaranteed Notes due 2019
Debt Instrument [Line Items]
Long-term debt, carrying amount		603
Other
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 395	$ 598

Long-term Debt - Summary of L47

Long-term Debt - Summary of Long-term Debt (Parenthetical) (Detail)	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Debt Instrument [Line Items]
Debt instrument interest rate			6.50%
4.00% Senior Notes due 2025
Debt Instrument [Line Items]
Debt instrument interest rate	4.00%	4.00%
Debt instrument maturity date	2,025	2,025
3.30% Senior Notes due 2021
Debt Instrument [Line Items]
Debt instrument interest rate	3.30%	3.30%
Debt instrument maturity date	2,021	2,021
3.00% Senior Notes due 2020
Debt Instrument [Line Items]
Debt instrument interest rate	3.00%	3.00%
Debt instrument maturity date	2,020	2,020
3.65% Senior Notes due 2023
Debt Instrument [Line Items]
Debt instrument interest rate	3.65%	3.65%
Debt instrument maturity date	2,023	2,023
4.20% Senior Notes due 2021
Debt Instrument [Line Items]
Debt instrument interest rate	4.20%	4.20%
Debt instrument maturity date	2,021	2,021
2.40% Senior Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate	2.40%	2.40%
Debt instrument maturity date	2,022	2,022
3.63% Senior Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate	3.63%	3.63%
Debt instrument maturity date	2,022	2,022
2.65% Senior Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate	2.65%	2.65%
Debt instrument maturity date	2,022	2,022
2.20% Senior Notes due 2020
Debt Instrument [Line Items]
Debt instrument interest rate	2.20%	2.20%
Debt instrument maturity date	2,020	2,020
7.00% Notes due 2038
Debt Instrument [Line Items]
Debt instrument interest rate	7.00%	7.00%
Debt instrument maturity date	2,038	2,038
4.50% Notes due 2021
Debt Instrument [Line Items]
Debt instrument interest rate	4.50%	4.50%
Debt instrument maturity date	2,021	2,021
5.95% Notes due 2041
Debt Instrument [Line Items]
Debt instrument interest rate	5.95%	5.95%
Debt instrument maturity date	2,041	2,041
3.60% Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate	3.60%	3.60%
Debt instrument maturity date	2,022	2,022
5.13% Notes due 2043
Debt Instrument [Line Items]
Debt instrument interest rate	5.13%	5.13%
Debt instrument maturity date	2,043	2,043
4.00% Notes due 2023
Debt Instrument [Line Items]
Debt instrument interest rate	4.00%	4.00%
Debt instrument maturity date	2,023	2,023
3.70% Notes due 2024
Debt Instrument [Line Items]
Debt instrument interest rate	3.70%	3.70%
Debt instrument maturity date	2,024	2,024
0.63% Guaranteed Notes due 2019
Debt Instrument [Line Items]
Debt instrument interest rate	0.63%	0.63%
Debt instrument maturity date	2,019	2,019
1.50% Guaranteed Notes due 2019
Debt Instrument [Line Items]
Debt instrument interest rate	1.50%	1.50%
Debt instrument maturity date	2,019	2,019

Long-term Debt - Additional Inf

Long-term Debt - Additional Information (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt, fair value	$ 13,800	$ 15,200
Short-term borrowings and current portion of long-term debt	3,736	3,324
Commercial paper borrowings
Debt Instrument [Line Items]
Short-term borrowings and current portion of long-term debt	700	1,300
Long-term debt	$ 2,900	$ 3,000

Derivative Instruments and He49

Derivative Instruments and Hedging Activities - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2018USD ($)Country	Dec. 31, 2017USD ($)	Jun. 30, 2017	Dec. 31, 2013EUR (€)
Derivative [Line Items]
Denominated debt issued		$ 1,100,000,000
Promissory note interest rate			6.50%
Fixed rate debt aggregate, after taking into account the effects of the interest rate swaps	$ 13,500,000,000
Variable rate debt aggregate, after taking into account the effects of the interest rate swaps	4,100,000,000
Short-term investments	1,600,000,000
Recognized a cumulative net (loss) in Accumulated Other Comprehensive Loss relating to revaluation of foreign currency forward contracts and foreign currency options designated as cash flow hedges	$ (12,000,000)
Minimum
Derivative [Line Items]
Number of countries in which Schlumberger conducts business | Country	85
1.50% Guaranteed Notes due 2019
Derivative [Line Items]
Notes, face amount | €				€ 500,000,000
Promissory note interest rate	1.50%	1.50%
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%
Cross currency swap
Derivative [Line Items]
Notional amount of interest rate swap		$ 1,100,000,000		€ 500,000,000
Cross currency swap | 2.20% Senior Notes due 2020
Derivative [Line Items]
Promissory note interest rate		1.97%
Cross currency swap | 2.65% Senior Notes due 2022
Derivative [Line Items]
Promissory note interest rate		2.52%
Fixed Rate Debt | 1.50% Guaranteed Notes due 2019
Derivative [Line Items]
Derivative swap interest rate				1.50%
Floating Rate Debt | 1.50% Guaranteed Notes due 2019
Derivative [Line Items]
Floating interest rate on securities	three-month LIBOR plus approximately 64 basis points
Foreign exchange contracts
Derivative [Line Items]
Notional amount of interest rate swap	$ 4,700,000,000
Foreign exchange contracts | Debt | Derivatives designated as hedges
Derivative [Line Items]
Notional amount of interest rate swap	$ 1,800,000,000
London Interbank Offered Rate (LIBOR) | Floating Rate Debt | 1.50% Guaranteed Notes due 2019
Derivative [Line Items]
Basis point	0.64%

Derivative Instruments and He50

Derivative Instruments and Hedging Activities - Effect of Derivative Instruments Designated as Fair Value and Cash Flow Hedges and Not Designated as Hedges on Consolidated Statement of Income (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivatives not designated as hedges | Foreign exchange contracts | Cost of services/sales
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income (Loss)	$ 4	$ 1	$ 32	$ 7
Fair Value Hedging | Derivatives designated as hedges | Cross currency swap | Interest expense
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income (Loss)	(39)	$ 29	(12)	$ 47
Cash Flow Hedging | Derivatives designated as hedges
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income (Loss)	37		60
Cash Flow Hedging | Derivatives designated as hedges | Cross currency swap | Interest expense
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income (Loss)	36		55
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 (Loss)	$ 1		$ 5

Segment Information - Schedule

Segment Information - Schedule of Segment Reporting Information, by Segment (Detail) - USD ($) $ in Millions		3 Months Ended				6 Months Ended
		Jun. 30, 2018		Jun. 30, 2017		Jun. 30, 2018		Jun. 30, 2017
Segment Reporting Information [Line Items]
Revenue		$ 8,303		$ 7,462		$ 16,131		$ 14,356
Income Before Taxes		547		17		1,190		351
Pretax operating income		1,094		950		2,068		1,707
Interest expense		144		142		287		281
Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue		1,636		1,759		3,192		3,377
Drilling
Segment Reporting Information [Line Items]
Revenue		2,234		2,107		4,360		4,092
Production
Segment Reporting Information [Line Items]
Revenue		3,257		2,496		6,216		4,683
Cameron
Segment Reporting Information [Line Items]
Revenue		1,295		1,265		2,605		2,494
Operating Segments
Segment Reporting Information [Line Items]
Revenue		8,303		7,462		16,131		14,356
Interest income		1		6		4		11
Interest expense		9		14		21		27
Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue		1,636		1,759		3,192		3,377
Income Before Taxes		350		299		657		580
Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue		2,234		2,107		4,360		4,092
Income Before Taxes		289		302		582		531
Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue		3,257		2,496		6,216		4,683
Income Before Taxes		316		221		532		331
Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue		1,295		1,265		2,605		2,494
Income Before Taxes		166		174		332		336
Eliminations & other
Segment Reporting Information [Line Items]
Revenue		(119)		(165)		(242)		(290)
Income Before Taxes		(27)		(46)		(35)		(71)
Corporate & other	[1]	(239)		(242)		(464)		(480)
Interest income		11	[2]	28	[2]	36	[3]	52	[3]
Interest expense		(135)	[4]	(128)	[4]	(266)	[5]	(254)	[5]
Charges and credits	[6]	$ (184)		$ (591)		$ (184)		$ (674)
[1]	Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets, certain centrally managed initiatives and other nonoperating items.
[2]	Interest income excludes amounts which are included in the segments’ income ($1 million in 2018; $6 million in 2017).
[3]	Interest income excludes amounts which are included in the segments’ income ($4 million in 2018; $11 million in 2017).
[4]	Interest expense excludes amounts which are included in the segments’ income ($9 million in 2018; $14 million in 2017).
[5]	Interest expense excludes amounts which are included in the segments’ income ($21 million in 2018; $27 million in 2017).
[6]	See Note 2 – Charges and Credits.

Segment Information - Schedul52

Segment Information - Schedule of Segment Reporting Information, by Segment (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Interest expense	$ 144	$ 142	$ 287	$ 281
Operating Segments
Segment Reporting Information [Line Items]
Interest income	1	6	4	11
Interest expense	$ 9	$ 14	$ 21	$ 27

Segment Information - Revenue b

Segment Information - Revenue by Geographic Area (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Revenue	$ 8,303	$ 7,462	$ 16,131	$ 14,356
Operating Segments
Segment Reporting Information [Line Items]
Revenue	8,303	7,462	16,131	14,356
Operating Segments | North America
Segment Reporting Information [Line Items]
Revenue	3,139	2,202	5,974	4,074
Operating Segments | Latin America
Segment Reporting Information [Line Items]
Revenue	919	1,039	1,790	1,991
Operating Segments | Europe/CIS/Africa
Segment Reporting Information [Line Items]
Revenue	1,778	1,750	3,482	3,401
Operating Segments | Middle East & Asia
Segment Reporting Information [Line Items]
Revenue	2,367	2,347	4,676	4,666
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	$ 100	$ 124	$ 209	$ 224

Segment Information - Summary o

Segment Information - Summary of North America and International Revenue Disaggregated by Group (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Revenue	$ 8,303	$ 7,462	$ 16,131	$ 14,356
Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,636	1,759	3,192	3,377
Drilling
Segment Reporting Information [Line Items]
Revenue	2,234	2,107	4,360	4,092
Production
Segment Reporting Information [Line Items]
Revenue	3,257	2,496	6,216	4,683
Cameron
Segment Reporting Information [Line Items]
Revenue	1,295	1,265	2,605	2,494
Other
Segment Reporting Information [Line Items]
Revenue	(119)	(165)	(242)	(290)
Operating Segments
Segment Reporting Information [Line Items]
Revenue	8,303	7,462	16,131	14,356
Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,636	1,759	3,192	3,377
Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	2,234	2,107	4,360	4,092
Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	3,257	2,496	6,216	4,683
Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue	1,295	1,265	2,605	2,494
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	100	124	209	224
Eliminations & other | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	134	170	272	290
Eliminations & other | Drilling
Segment Reporting Information [Line Items]
Revenue	54	57	103	118
Eliminations & other | Production
Segment Reporting Information [Line Items]
Revenue	2	(11)	3	(14)
Eliminations & other | Cameron
Segment Reporting Information [Line Items]
Revenue	(23)	3	(36)	(6)
Eliminations & other | Other
Segment Reporting Information [Line Items]
Revenue	(67)	(95)	(133)	(164)
North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	3,139	2,202	5,974	4,074
North America | Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	269	217	491	448
North America | Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	568	485	1,132	940
North America | Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	1,695	1,032	3,195	1,770
North America | Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue	611	474	1,180	919
North America | Operating Segments | Other
Segment Reporting Information [Line Items]
Revenue	(4)	(6)	(24)	(3)
International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,064	5,136	9,948	10,058
International | Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,233	1,372	2,429	2,639
International | Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	1,612	1,565	3,125	3,034
International | Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	1,560	1,475	3,018	2,927
International | Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue	707	788	1,461	1,581
International | Operating Segments | Other
Segment Reporting Information [Line Items]
Revenue	$ (48)	$ (64)	$ (85)	$ (123)

Pension and Other Postretirem55

Pension and Other Postretirement Benefit Plans - Net Pension Cost (Credit) for Schlumberger Pension Plans and US Postretirement Medical Plan (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Postretirement medical plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 8	$ 7	$ 16	$ 15
Interest cost	10	12	22	23
Expected return on plan assets	(16)	(16)	(32)	(31)
Amortization of prior service cost	(7)	(7)	(14)	(14)
Total pension cost	(5)	(4)	(8)	(7)
US
Defined Benefit Plan Disclosure [Line Items]
Service cost	14	14	30	29
Interest cost	41	44	84	88
Expected return on plan assets	(63)	(62)	(125)	(122)
Amortization of prior service cost	3	3	6	6
Amortization of net loss	12	9	24	19
Total pension cost	7	8	19	20
International
Defined Benefit Plan Disclosure [Line Items]
Service cost	38	19	70	48
Interest cost	76	75	152	153
Expected return on plan assets	(149)	(134)	(293)	(270)
Amortization of prior service cost	3	24	5	48
Amortization of net loss	27	27	70	60
Total pension cost	$ (5)	$ 11	$ 4	$ 39

Accumulated Other Comprehensi56

Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	$ 37,261	$ 41,529
Other comprehensive gain (loss) before reclassifications	(112)	(40)
Amounts reclassified from accumulated other comprehensive loss	81	125
Net other comprehensive income	(31)	85
Balance	36,897	39,952
Currency Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(2,139)	(2,136)
Other comprehensive gain (loss) before reclassifications	(81)	(26)
Net other comprehensive income	(81)	(26)
Balance	(2,220)	(2,162)
Marketable Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	13	21
Other comprehensive gain (loss) before reclassifications	(21)	(25)
Net other comprehensive income	(21)	(25)
Balance	(8)	(4)
Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	3	(19)
Other comprehensive gain (loss) before reclassifications	(10)	11
Amounts reclassified from accumulated other comprehensive loss	(5)	8
Net other comprehensive income	(15)	19
Balance	(12)
Pension and Other Postretirement Benefit Plans
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(2,151)	(2,509)
Amounts reclassified from accumulated other comprehensive loss	86	117
Net other comprehensive income	86	117
Balance	(2,065)	(2,392)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(4,274)	(4,643)
Balance	$ (4,305)	$ (4,558)