CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income (loss)		$ (1,513)	$ (1,627)	$ 2,135
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Impairments and other charges		3,764	3,820	2,575
Depreciation and amortization	[1]	3,837	4,094	4,078
Pension and other postretirement benefits expense		104	187	438
Stock-based compensation expense		343	267	326
Pension and other postretirement benefits funding		(133)	(174)	(346)
Earnings of equity method investments, less dividends received		(56)	(60)	(125)
Change in assets and liabilities:
(Increase) decrease in receivables	[2]	(124)	1,098	2,176
Decrease in inventories	[2]	108	800	625
(Increase) decrease in other current assets	[2]	(174)	308	76
Decrease (increase) in other assets	[2]	402	(488)	16
Decrease in accounts payable and accrued liabilities	[2]	(737)	(1,680)	(2,656)
Increase (decrease) in estimated liability for taxes on income	[2]	104	(110)	(699)
(Decrease) increase in other liabilities	[2]	(28)	77	24
Other	[2]	(234)	(251)	162
NET CASH PROVIDED BY OPERATING ACTIVITIES		5,663	6,261	8,805
Cash flows from investing activities:
Capital expenditures		(2,107)	(2,055)	(2,410)
SPM investments		(1,609)	(1,031)	(953)
Multiclient seismic data capitalized		(276)	(630)	(486)
Business acquisitions and investments, net of cash acquired		(847)	(2,398)	(443)
Sale (purchase) of investments, net		3,277	5,544	(5,848)
Other		(217)	(54)	(112)
NET CASH USED IN INVESTING ACTIVITIES		(1,779)	(624)	(10,252)
Cash flows from financing activities:
Dividends paid		(2,778)	(2,647)	(2,419)
Proceeds from employee stock purchase plan		212	231	296
Proceeds from exercise of stock options		85	184	152
Stock repurchase program		(969)	(778)	(2,182)
Proceeds from issuance of long-term debt		2,371	3,640	9,565
Repayment of long-term debt		(2,961)	(5,630)	(3,771)
Net decrease in short-term borrowings		(1,022)	(387)	(3)
Other		29	(41)	(264)
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES		(5,033)	(5,428)	1,374
Cash flow used in discontinued operations - operating activities				(233)
Net (decrease) increase in cash before translation effect		(1,149)	209	(306)
Translation effect on cash		19	(73)	(31)
Cash, beginning of period		2,929	2,793	3,130
Cash, end of period		$ 1,799	$ 2,929	$ 2,793

[1] Includes depreciation of property, plant and equipment and amortization of intangible assets, multiclient seismic data costs and SPM investments.

[2] Net of the effect of business acquisitions and divestitures.