Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net earnings (loss)	$ (335)	$ 245	$ (488)	$ 562
Adjustments to reconcile net earnings to net cash from operating activities:
Earnings from discontinued operations, net of tax	(139)	(33)	(197)	(42)
Depreciation, depletion and amortization	420	369	819	769
Asset impairments	154		154
Leasehold impairments	53	22	61	64
Accretion on discounted liabilities	15	15	31	32
Total (gains) losses on commodity derivatives	497	(126)	538	(358)
Cash settlements on commodity derivatives	(131)	11	(120)	19
(Gains) losses on asset dispositions	23	(22)	11	(30)
Deferred income tax expense (benefit)	20	(17)	(18)	(32)
Share-based compensation	58	45	96	81
Early retirement of debt			312
Total (gains) losses on foreign exchange	31	(49)	81	(64)
Settlements of intercompany foreign denominated assets/liabilities	(244)	1	(243)	10
Other	(20)	23	(50)	11
Changes in assets and liabilities, net	(133)	102	(108)	133
Net cash from operating activities - continuing operations	269	586	879	1,155
Cash flows from investing activities:
Capital expenditures	(602)	(434)	(1,253)	(831)
Acquisitions of property and equipment	(10)	(13)	(16)	(33)
Divestitures of property and equipment	560	75	607	107
Net cash from investing activities - continuing operations	(52)	(372)	(662)	(757)
Cash flows from financing activities:
Repayments of long-term debt principal			(807)
Early retirement of debt			(304)
Repurchases of common stock	(428)		(499)
Dividends paid on common stock	(42)	(33)	(74)	(65)
Shares exchanged for tax withholdings	(6)	(3)	(44)	(56)
Net cash from financing activities - continuing operations	(476)	(36)	(1,728)	(121)
Effect of exchange rate changes on cash:
Settlements of intercompany foreign denominated assets/liabilities	244	(1)	243	(10)
Other	(17)	9	(31)	10
Total effect of exchange rate changes on cash - continuing operations	227	8	212
Net change in cash, cash equivalents and restricted cash of continuing operations	(32)	186	(1,299)	277
Cash flows from discontinued operations:
Operating activities	236	151	430	328
Investing activities	(222)	(215)	(402)	(284)
Financing activities	73	128	112	89
Net change in cash, cash equivalents and restricted cash of discontinued operations	87	64	140	133
Net change in cash, cash equivalents and restricted cash	55	250	(1,159)	410
Cash, cash equivalents and restricted cash at beginning of period	1,470	2,119	2,684	1,959
Cash, cash equivalents and restricted cash at end of period	1,525	2,369	1,525	2,369
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	1,460	2,358	1,460	2,358
Restricted cash included in other current assets	28		28
Cash and cash equivalents included in current assets held for sale	37	11	37	11
Cash, cash equivalents and restricted cash at end of period	$ 1,525	$ 2,369	$ 1,525	$ 2,369