Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flow from operating activities:
Net income	$ 3,035	$ 4,881
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	856	756
Stock-based compensation	77	92
Pension plans contributions	(114)	(29)
Charges for reclamation and environmental obligations, including accretion	64	144
Payments for reclamation and environmental obligations	(148)	(131)
Losses on early extinguishment of debt	168	68
Deferred income taxes	223	419
Increase in long-term mill and leach stockpiles	(184)	(174)
Other, net	71	(26)
(Increases) decreases in working capital and other tax payments:
Accounts receivable	(603)	1,034
Inventories	(581)	(266)
Other current assets	(33)	(152)
Accounts payable and accrued liabilities	78	(101)
Accrued income taxes and other tax payments	(400)	(641)
Net cash provided by operating activities	2,509	5,874
Capital expenditures:
North America copper mines	(569)	(342)
South America	(659)	(431)
Indonesia	(624)	(463)
Africa	(428)	(89)
Molybdenum	(197)	(317)
Other	(41)	(107)
Other, net	(19)	24
Net cash used in investing activities	(2,537)	(1,725)
Cash flow from financing activities:
Proceeds from debt	3,023	37
Repayments of debt	(3,179)	(1,303)
Cash dividends paid:
Common stock	(832)	(1,186)
Noncontrolling interests	(76)	(350)
Contributions from noncontrolling interests	15	27
Net (payments for) proceeds from stock-based awards	(3)	2
Excess tax benefit from stock-based awards	7	23
Other, net	(22)	(9)
Net cash used in financing activities	(1,067)	(2,759)
Net (decrease) increase in cash and cash equivalents	(1,095)	1,390
Cash and cash equivalents at beginning of year	4,822	3,738
Cash and cash equivalents at end of period	$ 3,727	$ 5,128