Consolidated Statements of Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues	$ 4,288	$ 4,475	$ 8,871	$ 9,080
Cost of sales:
Production and delivery	2,853	2,622	5,572	5,050
Depreciation, depletion and amortization	530	291	859	558
Total cost of sales	3,383	2,913	6,431	5,608
Selling, general and administrative expenses	186	97	299	201
Mining exploration and research expenses	64	73	116	135
Environmental obligations and shutdown costs	16	81	31	91
Total costs and expenses	3,649	3,164	6,877	6,035
Operating income	639	1,311	1,994	3,045
Interest expense, net	(132)	(43)	(189)	(106)
Losses on early extinguishment of debt	0	0	(45)	(168)
Gain on investment in McMoRan Exploration Co.	128	0	128	0
Other income, net	13	51	10	38
Income before income taxes and equity in affiliated companies' net earnings	648	1,319	1,898	2,809
Provision for income taxes	(40)	(422)	(468)	(913)
Equity in affiliated companies' net earnings (losses)	2	(3)	4	(1)
Net income	610	894	1,434	1,895
Net income attributable to noncontrolling interests	(128)	(184)	(304)	(421)
Net income attributable to FCX common stockholders	$ 482	$ 710	$ 1,130	$ 1,474
Net income per share attributable to FCX common stockholders:
Basic	$ 0.49	$ 0.75	$ 1.17	$ 1.55
Diluted	$ 0.49	$ 0.74	$ 1.17	$ 1.55
Weighted-average common shares outstanding:
Basic	980	949	965	949
Diluted	984	953	968	954
Dividends declared per share of common stock	$ 1.3125	$ 0.3125	$ 1.625	$ 0.625