CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net income (loss)		$ (10,486)	$ (10,107)	$ 2,177
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Impairments and other charges and credits		12,515	12,901	141
Depreciation and amortization	[1]	2,566	3,589	3,556
Deferred taxes		(1,248)	(1,011)	(245)
Stock-based compensation expense		397	405	345
Pension and other postretirement benefits funding		(16)	(25)	(83)
Earnings of equity method investments, less dividends received		(28)	6	(48)
Change in assets and liabilities:
Decrease in receivables	[2]	2,345	142	430
Decrease (increase) in inventories	[2]	86	(314)	(10)
Decrease (increase) in other current assets	[2]	267	(68)	121
(Increase) decrease in other assets	[2]	(25)	22	(58)
Decrease in accounts payable and accrued liabilities	[2]	(3,330)	(161)	(824)
(Decrease) increase in estimated liability for taxes on income	[2]	(201)	6	(103)
Increase (decrease) in other liabilities	[2]	19	(52)	69
Other	[2]	83	98	245
NET CASH PROVIDED BY OPERATING ACTIVITIES		2,944	5,431	5,713
Cash flows from investing activities:
Capital expenditures		(1,116)	(1,724)	(2,160)
APS investments		(303)	(781)	(981)
Multiclient seismic data capitalized		(101)	(231)	(100)
Net proceeds from divestitures		434	348
Proceeds from formation of Sensia joint venture			238
Proceeds from sale of WesternGeco marine seismic business, net of cash divested				579
Business acquisitions and investments, net of cash acquired		(33)	(23)	(292)
(Purchase) sale of investments, net		(1,141)	317	1,943
Other		(93)	(155)	(29)
NET CASH USED IN INVESTING ACTIVITIES		(2,353)	(2,011)	(1,040)
Cash flows from financing activities:
Dividends paid		(1,734)	(2,769)	(2,770)
Proceeds from employee stock purchase plan		146	196	227
Proceeds from exercise of stock options			23	34
Stock repurchase program		(26)	(278)	(400)
Proceeds from issuance of long-term debt		5,837	4,004	898
Repayment of long-term debt		(4,975)	(4,799)	(2,861)
Net increase (decrease) in short-term borrowings		156	(44)	(85)
Repayment of finance lease-related obligations		(188)
Other		(89)	(51)	(63)
NET CASH USED IN FINANCING ACTIVITIES		(873)	(3,718)	(5,020)
Net decrease in cash before translation effect		(282)	(298)	(347)
Translation effect on cash		(11)	2	(19)
Cash, beginning of period		1,137	1,433	1,799
Cash, end of period		$ 844	$ 1,137	$ 1,433

[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.