Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Cash flow from operating activities:
Net (loss) income	$ (549)	$ 76
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation, depletion and amortization	341	347
Metals inventory adjustments	222	57
Gain (Loss) on Disposition of Assets	(11)	33
Stock-based compensation	27	29
Net charges for environmental and asset retirement obligations, including accretion	60	64
Payments for environmental and asset retirement obligations	(71)	(46)
Net charges for defined pension and postretirement plans	18	26
Pension plan contributions	(26)	(16)
Net loss on early extinguishment of debt	32	6
Deferred income taxes	(118)	33
Other, net	(56)	42
Changes in working capital and other:
Accounts receivable	205	19
Inventories	154	192
Other current assets	(89)	42
Accounts payable and accrued liabilities	(149)	(247)
Accrued income taxes and timing of other tax payments	(2)	(62)
Net cash provided by operating activities	(38)	534
Cash flow from investing activities:
Capital expenditures	(610)	(622)
Proceeds from Sale of Other Assets, Investing Activities	66	84
Other, net	(2)	(8)
Net cash used in investing activities	(546)	(546)
Cash flow from financing activities:
Proceeds from debt	1,478	114
Repayments of debt	(1,242)	(1,356)
Cash dividends and distributions paid:
Common stock	(73)	(73)
Noncontrolling interests	0	(9)
Contributions from noncontrolling interests	32	0
Stock-based awards net payments	(4)	(7)
Payments of Financing Costs	(18)	0
Net cash provided by (used in) financing activities	173	(1,331)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(411)	(1,343)
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of year	2,278	4,455
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period	1,867	3,112
North America Copper Mines Segment [Member]
Cash flow from investing activities:
Capital expenditures	(184)	(210)
South America Mines Segment [Member]
Cash flow from investing activities:
Capital expenditures	(74)	(61)
Grasberg Segment [Member]
Cash flow from investing activities:
Capital expenditures	(326)	(319)
Molybdenum
Cash flow from investing activities:
Capital expenditures	(7)	(4)
Other Segments [Member]
Cash flow from investing activities:
Capital expenditures	(19)	(28)
Cerro Verde Royalty Dispute
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Charges for Cerro Verde royalty dispute	9	15
Payments for Cerro Verde royalty dispute	$ (57)	$ (10)

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