GUARANTOR FINANCIAL STATEMENTS (Condensed Consolidating Balance Sheet) (Details) (USD $)	Dec. 31, 2013		Jun. 03, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Current assets:
Cash and cash equivalents	$ 1,985,000,000			$ 3,705,000,000		$ 4,822,000,000	$ 3,738,000,000
Accounts receivables	2,562,000,000
Inventories	5,018,000,000
Other current assets	407,000,000			387,000,000
Total current assets	9,972,000,000			10,297,000,000
Property, plant, equipment and mining development costs, net	24,042,000,000			20,999,000,000
Subject to amortization	12,472,000,000			0
Not subject to amortization	10,887,000,000			0
Investment in consolidated subsidiaries	0
Goodwill	1,916,000,000	[1]		0
Other Assets	4,184,000,000
Total assets	63,473,000,000			35,440,000,000	32,070,000,000
LIABILITIES AND EQUITY
Current liabilities	4,773,000,000			3,343,000,000
Long-term debt, less current portion	20,394,000,000			3,525,000,000
Deferred income taxes	7,410,000,000			3,490,000,000
Environmental and asset retirement obligations, less current portion	3,259,000,000			2,127,000,000
Other liabilities	1,690,000,000			1,644,000,000
Total liabilities	37,526,000,000			14,129,000,000
Redeemable noncontrolling interest	716,000,000		259,000,000	0
Equity:
Stockholders' equity	20,934,000,000			17,543,000,000
Noncontrolling interests	4,297,000,000			3,768,000,000
Total equity	25,231,000,000			21,311,000,000	18,553,000,000	14,560,000,000
Total liabilities and equity	63,473,000,000			35,440,000,000
FCX Issuer [Member]
Current assets:
Cash and cash equivalents	0			0
Accounts receivables	855,000,000
Inventories	0
Other current assets	114,000,000
Total current assets	969,000,000
Property, plant, equipment and mining development costs, net	27,000,000
Subject to amortization	0
Not subject to amortization	0
Investment in consolidated subsidiaries	31,162,000,000
Goodwill	0
Other Assets	7,126,000,000
Total assets	39,284,000,000
LIABILITIES AND EQUITY
Current liabilities	1,003,000,000
Long-term debt, less current portion	13,184,000,000
Deferred income taxes	4,137,000,000	[2]
Environmental and asset retirement obligations, less current portion	0
Other liabilities	26,000,000
Total liabilities	18,350,000,000
Redeemable noncontrolling interest	0
Equity:
Stockholders' equity	20,934,000,000
Noncontrolling interests	0
Total equity	20,934,000,000
Total liabilities and equity	39,284,000,000
FM O&G LLC Guarantor [Member]
Current assets:
Cash and cash equivalents	0			0
Accounts receivables	659,000,000
Inventories	18,000,000
Other current assets	20,000,000
Total current assets	697,000,000
Property, plant, equipment and mining development costs, net	43,000,000
Subject to amortization	6,207,000,000
Not subject to amortization	2,649,000,000
Investment in consolidated subsidiaries	9,712,000,000
Goodwill	437,000,000
Other Assets	4,640,000,000
Total assets	24,385,000,000
LIABILITIES AND EQUITY
Current liabilities	758,000,000
Long-term debt, less current portion	7,199,000,000
Deferred income taxes	0
Environmental and asset retirement obligations, less current portion	301,000,000
Other liabilities	3,436,000,000
Total liabilities	11,694,000,000
Redeemable noncontrolling interest	0
Equity:
Stockholders' equity	12,691,000,000
Noncontrolling interests	0
Total equity	12,691,000,000
Total liabilities and equity	24,385,000,000
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	1,985,000,000			3,705,000,000
Accounts receivables	2,258,000,000
Inventories	5,000,000,000
Other current assets	273,000,000
Total current assets	9,516,000,000
Property, plant, equipment and mining development costs, net	23,972,000,000
Subject to amortization	6,265,000,000
Not subject to amortization	8,238,000,000
Investment in consolidated subsidiaries	12,468,000,000
Goodwill	1,479,000,000
Other Assets	4,128,000,000
Total assets	66,066,000,000
LIABILITIES AND EQUITY
Current liabilities	4,222,000,000
Long-term debt, less current portion	8,056,000,000
Deferred income taxes	3,273,000,000
Environmental and asset retirement obligations, less current portion	2,958,000,000
Other liabilities	1,893,000,000
Total liabilities	20,402,000,000
Redeemable noncontrolling interest	716,000,000
Equity:
Stockholders' equity	41,100,000,000
Noncontrolling interests	3,848,000,000
Total equity	44,948,000,000
Total liabilities and equity	66,066,000,000
Eliminations [Member]
Current assets:
Cash and cash equivalents	0			0
Accounts receivables	(1,210,000,000)
Inventories	0
Other current assets	0
Total current assets	(1,210,000,000)
Property, plant, equipment and mining development costs, net	0
Subject to amortization	0
Not subject to amortization	0
Investment in consolidated subsidiaries	(53,342,000,000)
Goodwill	0
Other Assets	(11,710,000,000)
Total assets	(66,262,000,000)
LIABILITIES AND EQUITY
Current liabilities	(1,210,000,000)
Long-term debt, less current portion	(8,045,000,000)
Deferred income taxes	0
Environmental and asset retirement obligations, less current portion	0
Other liabilities	(3,665,000,000)
Total liabilities	(12,920,000,000)
Redeemable noncontrolling interest	0
Equity:
Stockholders' equity	(53,791,000,000)
Noncontrolling interests	449,000,000
Total equity	(53,342,000,000)
Total liabilities and equity	$ (66,262,000,000)

[1] During the fourth quarter of 2013, FCX conducted a qualitative goodwill impairment assessment by examining relevant events and circumstances that could have a negative impact on FCX's goodwill, such as macroeconomic conditions, industry and market conditions, cost factors that have a negative effect on earnings and cash flows, overall financial performance, dispositions and acquisitions, and any other relevant events or circumstances. After assessing the relevant events and circumstances for the qualitative impairment assessment, FCX determined that performing a quantitative goodwill impairment test was unnecessary, and no goodwill impairment was recognized.

[2] All U.S. related deferred income taxes are recorded at the parent company.