Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Net Income	$ 1,001	$ 1,861
Other comprehensive income, net of taxes:
Unrealized gains on securities arising during the period	0	1
Translation adjustments arising during the period	0	1
Defined benefit plans:
Amortization of unrecognized amounts included in net periodic benefit costs	7	3
Adjustment to deferred tax valuation allowance	5	0
Other comprehensive income	12	5
Comprehensive income	1,013	1,866
Comprehensive income attributable to noncontrolling interests	(237)	(362)
Comprehensive income attributable to FCX common stockholders	$ 776	$ 1,504