GUARANTOR FINANCIAL STATEMENTS (Condensed Consolidated Cash Flow Statement) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Cash flow from operating activities:
Net income	$ 3,441	[1]	$ 3,980	[2]	$ 5,747
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	2,797		1,179		1,022
Net losses on crude oil and natural gas derivative contracts	334		0		0
Gain on investment in McMoRan Exploration Co. (MMR)	(128)		0		0
Equity in Earnings of consolidated Subsidiaries	0
Other, net	72
Increase (decrease) in working capital and changes in other tax payment, excluding amounts from the acquisitions	(377)
Net cash provided by operating activities	6,139		3,774		6,620
Cash flow from investing activities:
Capital expenditures	(5,286)		(3,494)		(2,534)
Acquisitions, net of cash acquired	(5,441)
Intercompany loans	0
Distributions from consolidated subsidiary	0
Other, net	(181)		31		(1)
Net cash used in investing activities	(10,908)		(3,463)		(2,535)
Cash flow from financing activities:
Proceeds from Debt	11,501		3,029		48
Repayments of Debt and redemption of MMR preferred stock	(5,704)
Intercompany loans	0
Cash dividends and distributions paid	(2,537)
Other, net	(211)
Net cash provided by (used in) financing activities	3,049		(1,428)		(3,001)
Net decrease in cash and cash equivalents	(1,720)		(1,117)		1,084
Cash and cash equivalents at beginning of year	3,705				4,822
Cash and cash equivalents at end of year	1,985		3,705
FCX Issuer [Member]
Cash flow from operating activities:
Net income	2,658
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	4
Net losses on crude oil and natural gas derivative contracts	0
Gain on investment in McMoRan Exploration Co. (MMR)	(128)
Equity in Earnings of consolidated Subsidiaries	(2,886)
Other, net	8
Increase (decrease) in working capital and changes in other tax payment, excluding amounts from the acquisitions	272
Net cash provided by operating activities	(72)
Cash flow from investing activities:
Capital expenditures	0
Acquisitions, net of cash acquired	(5,437)
Intercompany loans	834
Distributions from consolidated subsidiary	629
Other, net	15
Net cash used in investing activities	(3,959)
Cash flow from financing activities:
Proceeds from Debt	11,260
Repayments of Debt and redemption of MMR preferred stock	(4,737)
Intercompany loans	0
Cash dividends and distributions paid	(2,281)
Other, net	(211)
Net cash provided by (used in) financing activities	4,031
Net decrease in cash and cash equivalents	0
Cash and cash equivalents at beginning of year	0
Cash and cash equivalents at end of year	0
FM O&G LLC Guarantor [Member]
Cash flow from operating activities:
Net income	281
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	616
Net losses on crude oil and natural gas derivative contracts	334
Gain on investment in McMoRan Exploration Co. (MMR)	0
Equity in Earnings of consolidated Subsidiaries	(281)
Other, net	(14)
Increase (decrease) in working capital and changes in other tax payment, excluding amounts from the acquisitions	735
Net cash provided by operating activities	1,671
Cash flow from investing activities:
Capital expenditures	(894)
Acquisitions, net of cash acquired	0
Intercompany loans	0
Distributions from consolidated subsidiary	0
Other, net	30
Net cash used in investing activities	(864)
Cash flow from financing activities:
Proceeds from Debt	0
Repayments of Debt and redemption of MMR preferred stock	(416)
Intercompany loans	(391)
Cash dividends and distributions paid	0
Other, net	0
Net cash provided by (used in) financing activities	(807)
Net decrease in cash and cash equivalents	0
Cash and cash equivalents at beginning of year	0
Cash and cash equivalents at end of year	0
Non-Guarantor Subsidiaries [Member]
Cash flow from operating activities:
Net income	3,934
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	2,177
Net losses on crude oil and natural gas derivative contracts	0
Gain on investment in McMoRan Exploration Co. (MMR)	0
Equity in Earnings of consolidated Subsidiaries	(265)
Other, net	78
Increase (decrease) in working capital and changes in other tax payment, excluding amounts from the acquisitions	(1,384)
Net cash provided by operating activities	4,540
Cash flow from investing activities:
Capital expenditures	(4,392)
Acquisitions, net of cash acquired	(4)
Intercompany loans	(162)
Distributions from consolidated subsidiary	0
Other, net	(226)
Net cash used in investing activities	(4,784)
Cash flow from financing activities:
Proceeds from Debt	241
Repayments of Debt and redemption of MMR preferred stock	(551)
Intercompany loans	(281)
Cash dividends and distributions paid	(885)
Other, net	0
Net cash provided by (used in) financing activities	(1,476)
Net decrease in cash and cash equivalents	(1,720)
Cash and cash equivalents at beginning of year	3,705
Cash and cash equivalents at end of year	1,985
Eliminations [Member]
Cash flow from operating activities:
Net income	(3,432)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	0
Net losses on crude oil and natural gas derivative contracts	0
Gain on investment in McMoRan Exploration Co. (MMR)	0
Equity in Earnings of consolidated Subsidiaries	3,432
Other, net	0
Increase (decrease) in working capital and changes in other tax payment, excluding amounts from the acquisitions	0
Net cash provided by operating activities	0
Cash flow from investing activities:
Capital expenditures	0
Acquisitions, net of cash acquired	0
Intercompany loans	(672)
Distributions from consolidated subsidiary	(629)
Other, net	0
Net cash used in investing activities	(1,301)
Cash flow from financing activities:
Proceeds from Debt	0
Repayments of Debt and redemption of MMR preferred stock	0
Intercompany loans	672
Cash dividends and distributions paid	629
Other, net	0
Net cash provided by (used in) financing activities	1,301
Net decrease in cash and cash equivalents	0
Cash and cash equivalents at beginning of year	0
Cash and cash equivalents at end of year	$ 0

[1] Included a net tax benefit of $183 million ($0.19 per share) in the second quarter, $16 million ($0.01 per share) in the fourth quarter and $199 million ($0.20 per share) for the year associated with net reductions in FCX's deferred tax liabilities and deferred tax asset valuation allowances related to the acquisitions of PXP and MMR.

[2] Included a net tax benefit of $208 million ($108 million attributable to noncontrolling interests and $100 million to net income attributable to FCX common stockholders or $0.11 per share) in the third quarter and $205 million ($107 million attributable to noncontrolling interests and $98 million to net income attributable to FCX common stockholders or $0.11 per share) for the year associated with adjustments to Cerro Verde's deferred income taxes. Refer to Note 11 for further discussion.