Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net Income	$ 824	$ 1,001
Defined benefit plans:
Amortization of unrecognized amounts included in net periodic benefit costs	7	7
Adjustment to deferred tax valuation allowance	0	5
Unrealized losses on securities arising during the period	(1)	0
Other comprehensive income	6	12
Total comprehensive income	830	1,013
Total comprehensive income attributable to noncontrolling interests	(176)	(237)
Total comprehensive income attributable to FCX common stockholders	$ 654	$ 776