Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flow from operating activities:
Net income	$ 3,587	$ 2,047
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	499	520
Stock-based compensation	69	75
Charges for reclamation and environmental obligations, including accretion	79	75
Payments of reclamation and environmental obligations	(88)	(97)
Losses on early extinguishment of debt	68	77
Deferred income taxes	337	107
Increase in long-term mill and leach stockpiles	(98)	(31)
Other, net	(32)	2
(Increases) decreases in working capital:
Accounts receivable	577	502
Inventories	(346)	(39)
Other current assets	0	(9)
Accounts payable and accrued liabilities	(184)	(161)
Accrued income and other taxes	(429)	(186)
Net cash provided by operating activities	4,039	2,882
Capital expenditures:
North America copper mines	(204)	(81)
South America	(257)	(154)
Indonesia	(301)	(195)
Africa	(40)	(50)
Molybdenum	(162)	(12)
Other	(68)	(35)
Other, net	19	8
Net cash used in investing activities	(1,013)	(519)
Cash flow from financing activities:
Proceeds from debt	23	35
Repayments of debt	(1,288)	(1,655)
Cash dividends and distributions paid:
Common stock	(949)	(130)
Preferred stock	0	(95)
Noncontrolling interests	(195)	(145)
Contributions from noncontrolling interests	13	15
Net payments for stock-based awards	(3)	(6)
Excess tax benefit from stock-based awards	22	4
Other, net	(9)	0
Net cash used in financing activities	(2,386)	(1,977)
Net increase in cash and cash equivalents	640	386
Cash and cash equivalents at beginning of year	3,738	2,656
Cash and cash equivalents at end of period	$ 4,378	$ 3,042