Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flow from operating activities:
Net loss	$ (4,511)	$ (4,205)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, depletion and amortization	1,374	1,829
Impairment of oil and gas properties	4,078	5,790
Non-cash oil and gas drillship settlements/idle rig costs	612	0
Oil and gas inventory adjustments and write downs	82	23
Mining inventory adjustments	7	63
Net gain on sales of assets	(749)	(39)
Net charges for environmental and asset retirement obligations, including accretion	107	109
Payments for environmental and asset retirement obligations	(116)	(81)
Net gain on early extinguishment of debt	(36)	0
Deferred income taxes	169	(1,432)
Estimated loss on disposal of discontinued operations	177	0
Increase in long-term mill and leach stockpiles	(99)	(104)
Net gains on crude oil derivative contracts	0	(58)
Other, net	53	81
Changes in working capital and other tax payments, excluding amounts from dispositions:
Accounts receivable	259	493
Inventories	190	8
Other current assets	(53)	(1)
Accounts payable and accrued liabilities	44	(205)
Accrued income taxes and changes in other tax payments	26	(485)
Net cash provided by operating activities	1,614	1,786
Capital expenditures:
North America copper mines	(76)	(214)
South America	(293)	(902)
Indonesia	(459)	(438)
Molybdenum mines	(1)	(7)
United States oil and gas operations	(868)	(1,795)
Other	(118)	(172)
Net proceeds from sale of additional interest in Morenci	996	0
Net proceeds from sale of other assets	290	150
Other, net	(6)	(14)
Net cash used in investing activities	(535)	(3,392)
Cash flow from financing activities:
Proceeds from debt	2,811	4,422
Repayments of debt	(3,649)	(2,360)
Net proceeds from sale of common stock	32	0
Cash dividends and distributions paid:
Common stock	(5)	(380)
Noncontrolling interests	(39)	(60)
Stock-based awards net payments, including excess tax benefit	(5)	(7)
Debt financing costs and other, net	(18)	(7)
Net cash (used in) provided by financing activities	(873)	1,608
Net increase in cash and cash equivalents	206	2
Increase in cash and cash equivalents in assets held for sale	(49)	(1)
Cash and cash equivalents at beginning of year	195	317
Cash and cash equivalents at end of period	$ 352	$ 318