Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flow from operating activities:
Net loss	$ (4,225)	$ (7,995)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, depletion and amortization	2,017	2,717
Impairment of oil and gas properties	4,317	9,442
Non-cash oil and gas drillship settlements	606	0
Other asset impairments, inventory adjustments, restructuring and other	119	104
Metals inventory adjustments	27	154
Net gain on sales of assets	(762)	(39)
Net charges for environmental and asset retirement obligations, including accretion	149	174
Payments for environmental and asset retirement obligations	(190)	(135)
Net gain on early extinguishment of debt	(51)	0
Deferred income taxes	(22)	(1,926)
Estimated loss on disposal of discontinued operations	182	0
Increase in long-term mill and leach stockpiles	(84)	(183)
Net gains on crude oil derivative contracts	0	(87)
Other, net	48	40
Changes in working capital and other tax payments, excluding amounts from dispositions:
Accounts receivable	257	990
Inventories	251	83
Other current assets	(120)	(13)
Accounts payable and accrued liabilities	(80)	(150)
Accrued income taxes and changes in other tax payments	155	(568)
Net cash provided by operating activities	2,594	2,608
Capital expenditures:
North America copper mines	(87)	(308)
South America	(332)	(1,339)
Indonesia	(715)	(660)
Molybdenum mines	(2)	(10)
United States oil and gas operations	(1,028)	(2,430)
Other	(145)	(308)
Net proceeds from sale of additional interest in Morenci	996	0
Net proceeds from sales of other assets	410	151
Other, net	9	(37)
Net cash used in investing activities	(894)	(4,941)
Cash flow from financing activities:
Proceeds from debt	3,463	6,552
Repayments of debt	(4,539)	(4,693)
Net proceeds from sale of common stock	442	999
Cash dividends and distributions paid:
Common stock	(5)	(547)
Noncontrolling interests	(87)	(89)
Stock-based awards net payments, including excess tax benefit	(5)	(8)
Debt financing costs and other, net	(17)	(7)
Net cash (used in) provided by financing activities	(748)	2,207
Net increase (decrease) in cash and cash equivalents	952	(126)
(Increase) decrease in cash and cash equivalents in assets held for sale	(39)	42
Cash and cash equivalents at beginning of year	195	317
Cash and cash equivalents at end of period	$ 1,108	$ 233