Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net Income	$ 1,140	$ 1,294	$ 3,035	$ 4,881
Other comprehensive income, net of taxes:
Unrealized gains (losses) on securities arising during the period	1	(1)	0	(1)
Translation adjustments arising during the period	0	(2)	(1)	(1)
Defined benefit plans:
Amortization of unrecognized amounts included in net periodic benefit costs	7	5	22	11
Adjustment to deferred tax valuation allowance	0	0	5	0
Other comprehensive income	8	2	26	9
Total comprehensive income	1,148	1,296	3,061	4,890
Total comprehensive income attributable to noncontrolling interests	(315)	(241)	(737)	(961)
Total comprehensive income attributable to FCX common stockholders	$ 833	$ 1,055	$ 2,324	$ 3,929