Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 3,727		$ 4,822
Trade accounts receivable	1,424		892
Other accounts receivable	242		250
Inventories:
Mill and leach stockpiles	1,595		1,289
Materials and supplies, net	1,465	[1]	1,354	[1]
Product	1,374		1,226
Other current assets	353		214
Total current assets	10,180		10,047
Property, plant, equipment and development costs, net	20,294		18,449
Long-term mill and leach stockpiles	1,871		1,686
Long-term receivables	1,004		675
Intangible assets, net	321		325
Other assets	847		888
Total assets	34,517		32,070
Current liabilities:
Accounts payable and accrued liabilities	2,531		2,297
Dividends payable	299		240
Current portion of reclamation and environmental obligations	259		236
Accrued income taxes	59		163
Current portion of debt	2		4
Total current liabilities	3,150		2,940
Long-term debt, less current portion	3,521		3,533
Deferred income taxes	3,378		3,255
Reclamation and environmental obligations, less current portion	2,194		2,138
Other liabilities	1,531		1,651
Total liabilities	13,774		13,517
FCX stockholders' equity:
Common stock	107		107
Capital in excess of par value	19,094		19,007
Retained earnings	1,953		546
Accumulated other comprehensive loss	(439)		(465)
Common stock held in treasury	(3,576)		(3,553)
Total FCX stockholders' equity	17,139		15,642
Noncontrolling interests	3,604		2,911
Total equity	20,743		18,553
Total liabilities and equity	$ 34,517		$ 32,070

[1] Materials and supplies inventory was net of obsolescence reserves totaling $26 million at September 30, 2012, and December 31, 2011.