Freeport-McMoRan (FCX) 10-Q 7 Nov 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document (USD $)	9 Months Ended
In Billions, except Share data, unless otherwise specified	Sep. 30, 2014	Oct. 31, 2014	Jun. 28, 2013
Document and Entity Information [Abstract]	'	'	'
Entity Registrant Name	'FREEPORT-MCMORAN INC	'	'
Entity Central Index Key	'0000831259	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Public Float	'	'	$28.30
Entity Common Stock, Shares Outstanding	'	1,039,118,147	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'Q3	'	'
Document Type	'10-Q	'	'
Amendment Flag	'false	'	'
Document Period End Date	30-Sep-14	'	'

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
Current assets:	'		'
Cash and cash equivalents	$658		$1,985
Trade accounts receivable	1,514		1,728
Other accounts receivable	793		834
Inventories:	'		'
Mill and leach stockpiles	1,967		1,705
Materials and supplies, net	1,943	[1]	1,730	[1]
Product	1,579		1,583
Other current assets	577		407
Total current assets	9,031		9,972
Property, plant, equipment and mining development costs, net	26,304		24,042
Oil and gas properties - full cost method	'		'
Subject to amortization, less accumulated amortization	11,306		12,472
Not subject to amortization	11,031		10,887
Long-term mill and leach stockpiles	2,569		2,386
Goodwill	1,717		1,916
Other assets	2,018		1,798
Total assets	63,976		63,473
Current liabilities:	'		'
Accounts payable and accrued liabilities	3,784		3,708
Current portion of debt	1,762		312
Dividends payable	334		333
Current portion of environmental and asset retirement obligations	310		236
Accrued income taxes	153		184
Total current liabilities	6,343		4,773
Long-term debt, less current portion	17,975		20,394
Deferred income taxes	7,559		7,410
Environmental and asset retirement obligations, less current portion	3,654		3,259
Other liabilities	1,730		1,690
Total liabilities	37,261		37,526
Redeemable noncontrolling interest	749		716
FCX stockholders’ equity:	'		'
Common stock	117		117
Capital in excess of par value	22,248		22,161
Retained earnings	3,306		2,742
Accumulated other comprehensive loss	-394		-405
Common stock held in treasury	-3,686		-3,681
Total FCX stockholders’ equity	21,591		20,934
Noncontrolling interests	4,375		4,297
Total equity	25,966		25,231
Total liabilities and equity	$63,976		$63,473
[1]	Materials and supplies inventory was net of obsolescence reserves totaling $22 million at September 30, 2014, and $24 million at December 31, 2013.

Consolidated_Statements_of_Inc

Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues	$5,696	$6,165	$16,203	$15,036
Cost of sales:	'	'	'	'
Production and delivery	3,152	3,332	8,971	8,904
Depreciation, depletion and amortization	945	919	2,924	1,778
Impairment of oil and gas properties	308	0	308	0
Total cost of sales	4,405	4,251	12,203	10,682
Selling, general and administrative expenses	158	158	457	457
Mining exploration and research expenses	29	57	93	173
Environmental obligations and shutdown costs	18	-8	100	23
Net gain on sales of assets	-46	0	-46	0
Total costs and expenses	4,564	4,458	12,807	11,335
Operating income	1,132	1,707	3,396	3,701
Interest expense, net	-158	-162	-483	-351
Net gain (loss) on early extinguishment of debt	58	0	63	-45
Gain on investment in McMoRan Exploration Co.	0	0	0	128
Other income, net	23	3	48	13
Income before income taxes and equity in affiliated companies' net (losses) earnings	1,055	1,548	3,024	3,446
Provision for income taxes	-349	-499	-1,034	-967
Equity in affiliated companies’ net (losses) earnings	-2	-1	0	3
Net income	704	1,048	1,990	2,482
Net income attributable to noncontrolling interests	-142	-218	-416	-519
Preferred dividends attributable to redeemable noncontrolling interest	-10	-9	-30	-12
Net income attributable to FCX common stockholders	$552	$821	$1,544	$1,951
Net income per share attributable to FCX common stockholders:	'	'	'	'
Basic	$0.53	$0.79	$1.48	$1.97
Diluted	$0.53	$0.79	$1.47	$1.96
Weighted-average common shares outstanding:	'	'	'	'
Basic	1,039	1,038	1,039	989
Diluted	1,046	1,043	1,045	993
Dividends declared per share of common stock	$0.31	$0.31	$0.94	$1.94

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net income	$704	$1,048	$1,990	$2,482
Defined benefit plans:	'	'	'	'
Amortization of unrecognized amounts included in net periodic benefit costs	5	6	12	18
Foreign exchange losses	2	0	-1	0
Translation adjustments and unrealized gains (losses) on securities	0	4	0	3
Other comprehensive income	7	10	11	21
Total comprehensive income	711	1,058	2,001	2,503
Total comprehensive income attributable to noncontrolling interests	-142	-217	-416	-518
Preferred dividends attributable to redeemable noncontrolling interest	-10	-9	-30	-12
Total comprehensive income attributable to FCX common stockholders	$559	$832	$1,555	$1,973

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Cash flow from operating activities:	'	'
Net income	$1,990	$2,482
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation, depletion and amortization before impairment	2,924	1,778
Impairment of oil and gas properties	308	0
Net losses on crude oil and natural gas derivative contracts	56	205
Gain on investment in McMoRan Exploration Co. (MMR)	0	-128
Net charges for environmental and asset retirement obligations, including accretion	146	98
Payments for environmental and asset retirement obligations	-134	-166
Net (gain) loss on early extinguishment of debt	-63	45
Net gain on sales of assets	-46	0
Deferred income taxes	107	169
Increase in long-term mill and leach stockpiles	-182	-348
Other, net	106	97
Decreases (increases) in working capital and changes in other tax payments, excluding amounts from acquisitions and dispositions:	'	'
Accounts receivable	200	51
Inventories	-267	-66
Other current assets	-26	162
Accounts payable and accrued liabilities	-379	-596
Accrued income taxes and other tax payments	-227	-40
Net cash provided by operating activities	4,513	3,743
Capital expenditures:	'	'
North America copper mines	-815	-795
South America	-1,278	-734
Indonesia	-722	-720
Africa	-100	-155
Molybdenum mines	-45	-128
U.S. oil and gas operations	-2,392	-928
Other	-63	-163
Acquisition of Deepwater Gulf of Mexico interests	-1,421	0
Acquisition of Plains Exploration & Production Company, net of cash acquired	0	-3,465
Acquisition of MMR, net of cash acquired	0	-1,628
Acquisition of cobalt chemical business, net of cash acquired	0	-348
Net proceeds from sale of Eagle Ford shale assets	2,971	0
Other, net	221	-24
Net cash used in investing activities	-3,644	-9,088
Cash flow from financing activities:	'	'
Proceeds from debt	3,346	11,229
Repayments of debt	-4,196	-4,816
Redemption of MMR preferred stock	0	-227
Cash dividends and distributions paid:	'	'
Common stock	-979	-1,957
Noncontrolling interests	-365	-157
Contributions from noncontrolling interests	24	0
Stock-based awards net proceeds (payments), including excess tax benefit	7	-100
Debt financing costs and other, net	-33	-113
Net cash (used in) provided by financing activities	-2,196	3,859
Net decrease in cash and cash equivalents	-1,327	-1,486
Cash and cash equivalents at beginning of year	1,985	3,705
Cash and cash equivalents at end of period	$658	$2,219

Consolidated_Statement_of_Equi

Consolidated Statement of Equity (Unaudited) (USD $)	Total	Total FCX Stockholders' Equity [Member]	Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Common Stock Held in Treasury [Member]	Noncontrolling Interests [Member]
In Millions, unless otherwise specified
Balance at Dec. 31, 2013	$25,231	$20,934	$117	$22,161	$2,742	($405)	($3,681)	$4,297
Balance (in shares) at Dec. 31, 2013	'	'	1,165	'	'	'	127	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Exercised and issued stock-based awards	13	13	0	13	0	0	0	0
Exercised and issued stock-based awards (in shares)	'	'	2	'	'	'	0	'
Stock-based compensation	75	75	0	75	0	0	0	0
Tender of shares for stock-based awards	-5	-5	0	0	0	0	-5	0
Tender of shares for stock-based awards (in shares)	'	'	0	'	'	'	0	'
Dividends on common stock	-980	-980	0	0	-980	0	0	0
Dividends to noncontrolling interests	-344	0	0	0	0	0	0	-344
Noncontrolling interests' share of contributed capital in subsidiary	5	-1	0	-1	0	0	0	6
Net income attributable to FCX common stockholders	1,544	1,544	0	0	1,544	0	0	0
Net income attributable to noncontrolling interests	416	0	0	0	0	0	0	416
Other comprehensive income	11	11	0	0	0	11	0	0
Balance at Sep. 30, 2014	$25,966	$21,591	$117	$22,248	$3,306	($394)	($3,686)	$4,375
Balance (in shares) at Sep. 30, 2014	'	'	1,167	'	'	'	127	'

General_Information_Unaudited

General Information (Unaudited)	9 Months Ended
	Sep. 30, 2014
General Information [Abstract]	'
General Information	'
	GENERAL INFORMATION
	Effective July 14, 2014, Freeport-McMoRan Copper & Gold Inc. changed its name to Freeport-McMoRan Inc. (FCX) to simplify the corporate name and better reflect FCX's expanded portfolio of assets. The accompanying unaudited consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and do not include all information and disclosures required by generally accepted accounting principles (GAAP) in the United States (U.S.). Therefore, this information should be read in conjunction with FCX's consolidated financial statements and notes contained in its annual report on Form 10-K for the year ended December 31, 2013. The information furnished herein reflects all adjustments that are, in the opinion of management, necessary for a fair statement of the results for the interim periods reported. With the exception of the oil and gas properties impairment discussed below and certain adjustments associated with the acquisitions of Plains Exploration & Production Company (PXP) and McMoRan Exploration Co. (MMR), collectively known as FCX Oil & Gas Inc. (FM O&G), all such adjustments are, in the opinion of management, of a normal recurring nature. Operating results for the three-month and nine-month periods ended September 30, 2014, are not necessarily indicative of the results that may be expected for the year ending December 31, 2014.
	As further discussed in Note 2, FCX completed its acquisitions of PXP on May 31, 2013, and MMR on June 3, 2013. The results included in these financial statements for the nine months ended September 30, 2013, include PXP's results beginning June 1, 2013, and MMR's results beginning June 4, 2013.
	Oil and Gas Properties. Under the Securities and Exchange Commission's (SEC) full cost accounting rules, FCX reviews the carrying value of its oil and gas properties each quarter on a country-by-country basis. Under these rules, capitalized costs of oil and gas properties (net of accumulated depreciation, depletion and amortization, and related deferred income taxes) for each cost center may not exceed a “ceiling” equal to:
	•	the present value, discounted at 10 percent, of estimated future net cash flows from the related proved oil and natural gas reserves, net of estimated future income taxes; plus
	•	the cost of the related unproved properties not being amortized; plus
	•	the lower of cost or estimated fair value of the related unproved properties included in the costs being amortized (net of related tax effects).
	These rules require that FCX price its future oil and gas production at the twelve-month average of the first-day-of-the-month historical reference prices as adjusted for location and quality differentials. FCX's reference prices are West Texas Intermediate for oil and the Henry Hub spot price for natural gas. Such prices are utilized except where different prices are fixed and determinable from applicable contracts for the remaining term of those contracts. The reserve estimates exclude the effect of any crude oil and natural gas derivatives FCX has in place. The estimated future net cash flows also exclude future cash outflows associated with settling asset retirement obligations included in the net book value of the oil and gas properties. The rules require an impairment if the capitalized costs exceed this “ceiling.”
	At September 30, 2014, the net capitalized costs with respect to FCX's U.S. oil and gas properties exceeded the related ceiling; therefore, an impairment charge of $308 million was recorded in third-quarter 2014, primarily because of higher capitalized costs and the lower twelve-month average of the first-day-of-the-month historical reference oil price at September 30, 2014. During October 2014, oil prices declined from the third-quarter average. Continuation of recent oil price declines, increases in capitalized costs subject to amortization and other factors may result in future additional ceiling test impairments.

Acquisitions_Unaudited_Notes

Acquisitions (Unaudited) (Notes)	9 Months Ended
	Sep. 30, 2014
Acquisitions [Abstract]	'
Business Combination Disclosure [Text Block]	'
	ACQUISITIONS AND DISPOSITIONS
	Eagle Ford Disposition. On June 20, 2014, FCX completed the sale of its Eagle Ford shale assets to a subsidiary of Encana Corporation for cash consideration of $3.1 billion, before closing adjustments from the April 1, 2014, effective date. Under full cost accounting rules, the proceeds were recorded as a reduction of capitalized oil and gas properties, with no gain or loss recognition, except for $62 million of deferred tax expense recorded through September 30, 2014, in connection with the allocation of $221 million of goodwill (for which deferred taxes were not previously provided) to the Eagle Ford shale assets. Approximately $1.3 billion of proceeds from this transaction was placed in a like-kind exchange escrow and was used to reinvest in additional oil and gas interests, as discussed below. The remaining proceeds were used to repay debt.
	Deepwater Gulf of Mexico (GOM) Acquisitions. On June 30, 2014, FCX completed the acquisition of interests in the Deepwater GOM from a subsidiary of Apache Corporation, including interests in the Lucius and Heidelberg oil fields and several exploration leases, for $919 million. Based on preliminary valuations, and including transaction costs and estimated asset retirement costs, FCX recorded capitalized costs for oil and gas properties subject to amortization of $460 million and costs not subject to amortization of $476 million. The Deepwater GOM acquisition was funded by the like-kind exchange escrow.
	Additionally, on September 8, 2014, FCX completed the acquisition of additional Deepwater GOM interests for $496 million, including an interest in the Vito oil discovery in the Mississippi Canyon area and a significant lease position in the Vito basin area. Based on preliminary valuations, and including purchase price adjustments and transaction costs, FCX recorded capitalized costs for oil and gas properties not subject to amortization of $509 million. This acquisition was funded in part with the remaining $414 million of funds from the like-kind exchange escrow.
	PXP and MMR Acquisitions. The second-quarter 2013 acquisitions of PXP and MMR added a portfolio of oil and gas assets to FCX's global mining business, creating a U.S.-based natural resources company. The acquisitions have been accounted for under the acquisition method, with FCX as the acquirer.
	During second-quarter 2014, FCX finalized the purchase price allocations, which resulted in a net increase of $20 million to oil and gas properties, an increase of $22 million to goodwill and a net decrease of $42 million to deferred income tax assets.
	For further discussion of the PXP and MMR acquisitions and the related financing, refer to Notes 2 and 8 in FCX's annual report on Form 10-K for the year ended December 31, 2013.
	Unaudited Pro Forma Consolidated Financial Information. The following unaudited pro forma financial information has been prepared to reflect the acquisitions of PXP and MMR. The unaudited pro forma financial information combines the historical statements of income of FCX, PXP and MMR for the nine months ended September 30, 2013, giving effect to the mergers as if they had occurred on January 1, 2012. The historical consolidated financial information has been adjusted to reflect factually supportable items that are directly attributable to the acquisitions.
		Nine Months
		Ended
		September 30, 2013
		(in millions, except per share amounts)
	Revenues	$	17,190
	Operating income	4,617
	Net income from continuing operations	2,683
	Net income attributable to FCX common stockholders	2,134
	Net income per share attributable to FCX common stockholders:
	Basic	$	2.05
	Diluted	2.04
	The unaudited pro forma consolidated information for the nine months ended September 30, 2013, has been prepared for illustrative purposes only and is not intended to be indicative of the results of operations that actually would have occurred, or the results of operations expected in future periods, had the events reflected herein occurred on the date indicated. The most significant pro forma adjustments to net income from continuing operations for the nine months ended September 30, 2013, were to exclude $519 million of acquisition-related costs, the net tax benefit of $183 million of acquisition-related adjustments and the $128 million gain on the investment in MMR. Additionally, for the nine months ended September 30, 2013, the pro forma consolidated information excluded a $77 million gain on the sale of MMR oil and gas properties because of the application of the full cost method of accounting.

Earnings_Per_Share_Unaudited

Earnings Per Share (Unaudited)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	EARNINGS PER SHARE
	FCX’s basic net income per share of common stock was computed by dividing net income attributable to FCX common stockholders by the weighted-average of common stock outstanding during the period. Diluted net income per share of common stock was computed using the most dilutive of (a) the two-class method or (b) the treasury stock method. Under the two-class method, net income is allocated to each class of common stock and participating securities as if all of the earnings for the period had been distributed. FCX’s participating securities consist of vested restricted stock units (RSUs) for which the underlying common shares are not yet issued and entitle holders to non-forfeitable dividends.
	The following table sets forth the computation of basic and diluted net income per share (in millions, except per share amounts):
		Three Months Ended							Nine Months Ended
		September 30,							September 30,
		2014				2013			2014				2013
	Net income	$	704			$	1,048		$	1,990			$	2,482
	Net income attributable to noncontrolling interests	(142		)		(218		)	(416		)		(519		)
	Preferred dividends on redeemable noncontrolling interest	(10		)		(9		)	(30		)		(12		)
	Undistributed earnings allocable to participating securities	(2		)		—			(4		)		—
	Net income allocable to FCX common stockholders	$	550			$	821		$	1,540			$	1,951
	Basic weighted-average shares of common stock outstanding	1,039				1,038			1,039				989
	Add shares issuable upon exercise or vesting of dilutive stock options and RSUs	7			a	5			6			a	4
	Diluted weighted-average shares of common stock outstanding	1,046				1,043			1,045				993
	Basic net income per share attributable to FCX common stockholders	$	0.53			$	0.79		$	1.48			$	1.97
	Diluted net income per share attributable to FCX common stockholders	$	0.53			$	0.79		$	1.47			$	1.96
	a.	Excluded shares of common stock associated with outstanding stock options with exercise prices less than the average market price of FCX's common stock that were anti-dilutive totaled approximately 5 million for third-quarter 2014 and 3 million for the nine months ended September 30, 2014.
	Outstanding stock options with exercise prices greater than the average market price of FCX’s common stock during the period are excluded from the computation of diluted net income per share of common stock. Excluded stock options totaled 25 million with a weighted-average exercise price of $42.34 per option for third-quarter 2014, 28 million with a weighted-average exercise price of $41.42 per option for the nine months ended September 30, 2014, 34 million with a weighted-average exercise price of $40.11 per option for third-quarter 2013 and 32 million with a weighted-average exercise price of $40.63 per option for the nine months ended September 30, 2013.

Inventories_Including_LongTerm

Inventories, Including Long-Term Mill and Leach Stockpiles (Unaudited)	9 Months Ended
	Sep. 30, 2014
Inventories, Including Long Term Mill and Leach Stockpiles [Abstract]	'
Inventories, Including Long-Term Mill and Leach Stockpiles	'
	INVENTORIES, INCLUDING LONG-TERM MILL AND LEACH STOCKPILES
	The components of inventories follow (in millions):
		September 30,		December 31, 2013
		2014
	Current inventories:
	Raw materials (primarily concentrates)	$	335	$	238
	Work-in-processa	129		199
	Finished goodsb	1,115		1,146
	Total product inventories	$	1,579	$	1,583
	Mill stockpiles	$	126	$	91
	Leach stockpiles	1,841		1,614
	Total current mill and leach stockpiles	$	1,967	$	1,705
	Total materials and supplies, netc	$	1,943	$	1,730
	Long-term inventories:
	Mill stockpiles	$	787	$	698
	Leach stockpiles	1,782		1,688
	Total long-term mill and leach stockpilesd	$	2,569	$	2,386
	a.	FCX's mining operations also have work-in-process inventories that are reflected as mill and leach stockpiles.
	b.	Primarily included molybdenum concentrates; copper concentrates, anodes, cathodes and rod; and various cobalt products.
	c.	Materials and supplies inventory was net of obsolescence reserves totaling $22 million at September 30, 2014, and $24 million at December 31, 2013.
	d.	Estimated metals in stockpiles not expected to be recovered within the next 12 months.

Income_Taxes_Unaudited

Income Taxes (Unaudited)	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	INCOME TAXES
	Variations in the relative proportions of jurisdictional income result in fluctuations to FCX’s consolidated effective income tax rate. Geographic sources of FCX's provision for income taxes follow (in millions):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
	U.S. operations	$	38		$	104	a	$	323	b	$	85	a
	International operations	311		c	395			711		c	882
	Total	$	349		$	499		$	1,034		$	967
	a.	As a result of second-quarter 2013 oil and gas acquisitions, FCX recognized a net tax benefit of $183 million, consisting of income tax benefits of $190 million associated with net reductions in FCX's valuation allowances and $69 million related to the release of the deferred tax liability on PXP's investment in MMR common stock; partially offset by income tax expense of $76 million associated with the write off of deferred tax assets related to environmental liabilities.
	b.	Included a $62 million charge for deferred taxes recorded in connection with the allocation of goodwill to the sale of the Eagle Ford shale assets.
	c.	Included a $54 million charge related to changes in Chilean tax rules.
	FCX’s consolidated effective income tax rate was 34 percent for the first nine months of 2014 and 33 percent for the first nine months of 2013, excluding the net benefit of $183 million for acquisition-related adjustments.

Debt_and_Equity_Transactions_U

Debt and Equity Transactions (Unaudited)	9 Months Ended
	Sep. 30, 2014
Debt and Equity Transactions [Abstract]	'
Debt and Equity Transactions	'
	DEBT AND EQUITY TRANSACTIONS
	In September 2014, FCX announced the planned redemption of the $400 million outstanding aggregate principal amount of its 8.625% Senior Notes due 2019. On October 15, 2014, the redemption date, these senior notes had a book value of $441 million, which included purchase accounting fair value adjustments of $41 million. Holders of these senior notes received the principal amount together with the redemption premium and accrued and unpaid interest to the redemption date. As a result of this redemption, FCX will report a gain on early extinguishment of debt of $24 million in fourth-quarter 2014.
	In July 2014, FCX redeemed $1.7 billion of the aggregate principal amount of outstanding senior notes, which included $263 million for the 6.125% Senior Notes due 2019, $525 million for the 6½% Senior Notes due 2020, $350 million for the 6.75% Senior Notes due 2022 and $525 million for the 6.875% Senior Notes due 2023. At the redemption date, these senior notes had a book value of $1.8 billion, which included purchase accounting fair value adjustments of $167 million. In accordance with the terms of these senior notes, the redemptions were funded with cash contributions to FM O&G by FCX in exchange for additional equity, which is eliminated in the consolidated financial statements. Holders of these senior notes received the principal amount together with the redemption premium and accrued and unpaid interest to the redemption date. As a result of these redemptions, FCX recorded a gain on early extinguishment of debt of $58 million in third-quarter 2014.
	In May 2014, FCX, PT Freeport Indonesia (PT-FI) and Freeport-McMoRan Oil & Gas LLC (FM O&G LLC, a wholly owned subsidiary of FM O&G and the successor entity of PXP) amended the senior unsecured $3.0 billion revolving credit facility to extend the maturity date one year to May 31, 2019, and increase the aggregate principal amount from $3.0 billion to $4.0 billion, with $500 million available to PT-FI. FCX, PT-FI and FM O&G LLC had entered into the $3.0 billion revolving credit facility on May 31, 2013 (upon completion of the acquisition of PXP). At September 30, 2014, FCX had borrowings of $1.1 billion and $45 million of letters of credit issued under the revolving credit facility, resulting in availability of approximately $2.9 billion, of which $1.5 billion could be used for additional letters of credit.
	In April 2014, FCX redeemed $210 million of the aggregate principal amount of the outstanding 6.625% Senior Notes due 2021. In accordance with the terms of the senior notes, the redemption was funded with cash contributions to FM O&G by FCX in exchange for additional equity, which is eliminated in the consolidated financial statements. Holders of these senior notes received the principal amount together with the redemption premium and accrued and unpaid interest to the redemption date. As a result of the redemption, FCX recorded a gain on early extinguishment of debt of $6 million in second-quarter 2014.
	In March 2014, Sociedad Minera Cerro Verde S.A.A. (Cerro Verde, FCX's mining subsidiary in Peru) entered into a five-year, $1.8 billion senior unsecured credit facility that is nonrecourse to FCX and the other shareholders of Cerro Verde. The credit facility allows for term loan borrowings up to the full amount of the facility, less any amounts issued and outstanding under a $500 million letter of credit sublimit. Interest on amounts drawn under the term loan is based on London Interbank Offered Rate (LIBOR) plus a spread (currently 1.90 percent) based on Cerro Verde’s total net debt to earnings before interest, taxes, depreciation and amortization (EBITDA) ratio as defined in the agreement. Amounts may be drawn or letters of credit may be issued over a two-year period to fund a portion of Cerro Verde’s expansion project and for Cerro Verde's general corporate purposes. The credit facility amortizes in three installments in amounts necessary for the aggregate borrowings and outstanding letters of credit not to exceed 85 percent of the $1.8 billion commitment on September 30, 2017, 70 percent on March 31, 2018, and 35 percent on September 30, 2018, with the remaining balance due on the maturity date of March 10, 2019. At September 30, 2014, there were no borrowings and no letters of credit issued under Cerro Verde’s credit facility.
	FCX recorded a loss on early extinguishment of debt of $45 million in first-quarter 2013 for financing costs incurred for the terminated $9.5 billion acquisition bridge loan facility, which was entered into in December 2012 to provide interim financing for FCX's second-quarter 2013 acquisitions of PXP and MMR.
	Consolidated interest expense (excluding capitalized interest) totaled $212 million in third-quarter 2014, $223 million in third-quarter 2013, $661 million for the first nine months of 2014 and $465 million for the first nine months of 2013. Capitalized interest included in property, plant, equipment and mining development costs, net, totaled $34 million in third-quarter 2014, $26 million in third-quarter 2013, $113 million for the first nine months of 2014 and $68 million for the nine months of 2013. Capitalized interest included in oil and gas properties not subject to amortization totaled $20 million in third-quarter 2014, $35 million in third-quarter 2013, $65 million for the first nine months of 2014 and $46 million for the four months from June 1, 2013, to September 30, 2013.
	On September 24, 2014, FCX's Board of Directors declared a quarterly dividend of $0.3125 per share, which was paid on November 3, 2014, to common shareholders of record at the close of business on October 15, 2014.
	In connection with the second-quarter 2013 acquisition of PXP, FCX issued 91 million shares of its common stock.

Financial_Instruments_Unaudite

Financial Instruments (Unaudited)	9 Months Ended
	Sep. 30, 2014
Financial Instruments [Abstract]	'
Financial Instruments	'
	FINANCIAL INSTRUMENTS
	FCX does not purchase, hold or sell derivative financial instruments unless there is an existing asset or obligation, or it anticipates a future activity that is likely to occur and will result in exposure to market risks, which FCX intends to offset or mitigate. FCX does not enter into any derivative financial instruments for speculative purposes, but has entered into derivative financial instruments in limited instances to achieve specific objectives. These objectives principally relate to managing risks associated with commodity price changes, foreign currency exchange rates and interest rates.
	Commodity Contracts.  From time to time, FCX has entered into derivative contracts to hedge the market risk associated with fluctuations in the prices of commodities it purchases and sells. As a result of the acquisition of PXP, FCX assumed a variety of crude oil and natural gas commodity derivatives to hedge the exposure to the volatility of crude oil and natural gas commodity prices. Derivative financial instruments used by FCX to manage its risks do not contain credit risk-related contingent provisions. As of September 30, 2014, and December 31, 2013, FCX had no price protection contracts relating to its mine production. A discussion of FCX’s derivative contracts and programs follows.
	Derivatives Designated as Hedging Instruments – Fair Value Hedges
	Copper Futures and Swap Contracts. Some of FCX’s U.S. copper rod customers request a fixed market price instead of the Commodity Exchange Inc. (COMEX), a division of the New York Mercantile Exchange (NYMEX), average copper price in the month of shipment. FCX hedges this price exposure in a manner that allows it to receive the COMEX average price in the month of shipment while the customers pay the fixed price they requested. FCX accomplishes this by entering into copper futures or swap contracts. Hedging gains or losses from these copper futures and swap contracts are recorded in revenues. FCX did not have any significant gains or losses during the three-month or nine-month periods ended September 30, 2014 and 2013, resulting from hedge ineffectiveness. At September 30, 2014, FCX held copper futures and swap contracts that qualified for hedge accounting for 54 million pounds at an average contract price of $3.09 per pound, with maturities through December 2015.
	A summary of gains (losses) recognized in revenues for derivative financial instruments related to commodity contracts that are designated and qualify as fair value hedge transactions, along with the unrealized gains (losses) on the related hedged item follows (in millions):
		Three Months Ended								Nine Months Ended
		September 30,								September 30,
		2014				2013				2014				2013
	Copper futures and swap contracts:
	Unrealized gains (losses):
	Derivative financial instruments	$	(10	)		$	16			$	(10	)		$	(2	)
	Hedged item – firm sales commitments	10				(16		)		10				2
	Realized gains (losses):
	Matured derivative financial instruments	1				(3		)		(3		)		(17		)
	Derivatives Not Designated as Hedging Instruments
	Embedded Derivatives. As described in Note 1 to FCX's annual report on Form 10-K for the year ended December 31, 2013, under “Revenue Recognition,” certain FCX copper concentrate, copper cathode and gold sales contracts provide for provisional pricing primarily based on the London Metal Exchange (LME) copper price or the COMEX copper price and the London Bullion Market Association (London) gold price at the time of shipment as specified in the contract. Similarly, FCX purchases copper under contracts that provide for provisional pricing. FCX applies the normal purchases and normal sales scope exception in accordance with derivatives and hedge accounting guidance to the host sales agreements since the contracts do not allow for net settlement and always result in physical delivery. Sales and purchases with a provisional sales price contain an embedded derivative (i.e., the price settlement mechanism is settled after the time of delivery) that is required to be bifurcated from the host contract. The host contract is the sale or purchase of the metals contained in the concentrates or cathodes at the then-current LME or COMEX copper price or the London gold price as defined in the contract. Mark-to-market price fluctuations recorded through the settlement date are reflected in revenues for sales contracts and in cost of sales as production and delivery costs for purchase contracts.
	A summary of FCX’s embedded commodity derivatives at September 30, 2014, follows:
		Open Positions			Average Price								Maturities Through
					Per Unit
					Contract				Market
	Embedded derivatives in provisional sales contracts:
	Copper (millions of pounds)	554			$	3.14			$	3.03			Feb-15
	Gold (thousands of ounces)	301			1,259				1,214				Jan-15
	Embedded derivatives in provisional purchase contracts:
	Copper (millions of pounds)	98			3.16				3.03				Jan-15
	Crude Oil and Natural Gas Contracts. As a result of the acquisition of PXP, FCX has derivative contracts for 2014 and 2015 that consist of crude oil options and natural gas swaps. These crude oil and natural gas derivatives are not designated as hedging instruments and are recorded at fair value with the mark-to-market gains and losses recorded in revenues.
	The crude oil options were entered into by PXP to protect the realized price of a portion of expected future sales in order to limit the effects of crude oil price decreases. At September 30, 2014, these contracts are composed of crude oil put spreads consisting of put options with a floor limit. The premiums associated with put options are deferred until the settlement period. At September 30, 2014, the deferred option premiums and accrued interest associated with the crude oil option contracts totaled $269 million, which was included as a reduction of the fair value of the crude oil options contracts. At September 30, 2014, the outstanding crude oil option contracts, which settle monthly and cover approximately 10 million barrels in the fourth quarter of 2014 and approximately 31 million barrels in 2015, follow:
								Average Strike Price (per barrel)a
	Period		Instrument Type		Daily Volumes (thousand barrels)			Floor				Floor Limit				Average Deferred Premium		Index
																(per barrel)
	2014
	Oct - Dec		Put optionsb		75			$	90			$	70			$	5.74	Brent
	Oct - Dec		Put optionsb		30			95				75				6.09		Brent
	Oct - Dec		Put optionsb		5			100				80				7.11		Brent
	2015
	Jan - Dec		Put optionsb		84			90				70				6.89		Brent
	a.	The average strike prices do not reflect any premiums to purchase the put options.
	b.	If the index price is less than the per barrel floor, FCX receives the difference between the per barrel floor and the index price up to a maximum of $20 per barrel less the option premium. If the index price is at or above the per barrel floor, FCX pays the option premium and no cash settlement is received.
	In addition, at September 30, 2014, outstanding natural gas swaps with a weighted-average fixed swap price of $4.09 per million British thermal units (MMBtu) cover approximately 9 million MMBtu of natural gas, with maturities through December 2014 (on daily volumes of 100,000 MMBtu). If the Henry Hub index price is less than the fixed price, FCX receives the difference between the fixed price and the Henry Hub index price. FCX pays the difference between the index price and the fixed price if the Henry Hub index price is greater than the fixed price.
	Copper Forward Contracts. Atlantic Copper, FCX's wholly owned smelting and refining unit in Spain, enters into forward copper contracts designed to hedge its copper price risk whenever its physical purchases and sales pricing periods do not match. These economic hedge transactions are intended to hedge against changes in copper prices, with the mark-to-market hedging gains or losses recorded in cost of sales. At September 30, 2014, Atlantic Copper held net forward copper purchase contracts for 46 million pounds at an average contract price of $3.12 per pound, with maturities through November 2014.
	Summary of Gains (Losses). A summary of the realized and unrealized gains (losses) recognized in income before income taxes and equity in affiliated companies’ net earnings for commodity contracts that do not qualify as hedge transactions, including embedded derivatives, follows (in millions):
		Three Months Ended								Nine Months Ended
		September 30,								September 30,
		2014				2013				2014				2013
	Embedded derivatives in provisional copper and gold
	sales contractsa	$	(99	)		$	141			$	(184	)		$	(147	)
	Crude oil options and swapsa	57				(173		)		(47		)		(227		)
	Natural gas swapsa	7				3				(9		)		22
	Copper forward contractsb	(4		)		—				1				3
	a.	Amounts recorded in revenues.
	b.	Amounts recorded in cost of sales as production and delivery costs.
	Unsettled Derivative Financial Instruments
	A summary of the fair values of unsettled commodity derivative financial instruments follows (in millions):
			September 30,				December 31, 2013
			2014
	Commodity Derivative Assets:
	Derivatives designated as hedging instruments:
	Copper futures and swap contractsa		$	1			$	6
	Derivatives not designated as hedging instruments:
	Embedded derivatives in provisional copper and gold
	sales/purchase contracts		12				63
	Total derivative assets		$	13			$	69
Commodity Derivative Liabilities:
Derivatives designated as hedging instruments:
Copper futures and swap contractsa		$	5			$	—
Derivatives not designated as hedging instruments:
Embedded derivatives in provisional copper and gold
sales/purchase contracts		75				16
Crude oil optionsb		182				309
Natural gas swaps		—				4
Copper forward contracts		4				1
Total derivative liabilities		$	266			$	330
a.	FCX paid $6 million to brokers at September 30, 2014, and $1 million at December 31, 2013, for margin requirements (recorded in other current assets).
b.	Included $269 million at September 30, 2014, and $444 million at December 31, 2013, for deferred premiums and accrued interest.
FCX's commodity contracts have netting arrangements with counterparties with which the right of offset exists, and it is FCX's policy to offset balances by counterparty on the balance sheet. FCX's embedded derivatives on provisional sales/purchases are netted with the corresponding outstanding receivable/payable balances. A summary of these unsettled commodity contracts that are offset in the balance sheet follows (in millions):
		Assets								Liabilities
		September 30, 2014				December 31, 2013				September 30, 2014				December 31, 2013
Gross amounts recognized:
Commodity contracts:
Embedded derivatives on provisional
sales/purchase contracts		$	12			$	63			$	75			$	16
Crude oil and natural gas derivatives		—				—				182				313
Copper derivatives		1				6				9				1
		13				69				266				330
Less gross amounts of offset:
Commodity contracts:
Embedded derivatives on provisional
sales/purchase contracts		—				10				—				10
Crude oil and natural gas derivatives		—				—				—				—
Copper derivatives		1				—				1				—
		1				10				1				10
Net amounts presented in balance sheet:
Commodity contracts:
Embedded derivatives on provisional
sales/purchase contracts		12				53				75				6
Crude oil and natural gas derivatives		—				—				182				313
Copper derivatives		—				6				8				1
		$	12			$	59			$	265			$	320
Balance sheet classification:
Trade accounts receivable		$	1			$	53			$	60			$	—
Other current assets		—				6				—				—
Accounts payable and accrued liabilities		11				—				169				205
Other liabilities		—				—				36				115
		$	12			$	59			$	265			$	320
Credit Risk.  FCX is exposed to credit loss when financial institutions with which FCX has entered into derivative transactions (commodity, foreign exchange and interest rate swaps) are unable to pay. To minimize the risk of such losses, FCX uses counterparties that meet certain credit requirements and periodically reviews the creditworthiness of these counterparties. FCX does not anticipate that any of the counterparties it deals with will default on their obligations. As of September 30, 2014, the maximum amount of credit exposure associated with derivative transactions was $12 million.
Other Financial Instruments.  Other financial instruments include cash and cash equivalents, accounts receivable, investment securities, legally restricted funds, accounts payable and accrued liabilities, dividends payable and long-term debt. The carrying value for cash and cash equivalents (which included time deposits of $72 million at September 30, 2014, and $211 million at December 31, 2013), accounts receivable, accounts payable and accrued liabilities, and dividends payable approximates fair value because of their short-term nature and generally negligible credit losses (refer to Note 8 for the fair values of investment securities, legally restricted funds and long-term debt).
In addition, FCX has non-detachable warrants, which are considered to be embedded derivative instruments, associated with FM O&G's Plains Offshore Operations Inc. (Plains Offshore) 8% Convertible Preferred Stock (Preferred Stock) (refer to Note 8 for the fair value of these instruments).

Fair_Value_Measurement_Unaudit

Fair Value Measurement (Unaudited)	9 Months Ended
	Sep. 30, 2014
Fair Value Measurement [Abstract]	'
Fair Value Measurement	'
	FAIR VALUE MEASUREMENT
	Fair value accounting guidance includes a hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 inputs) and the lowest priority to unobservable inputs (Level 3 inputs). FCX recognizes transfers between levels at the end of the reporting period. FCX did not have any significant transfers in or out of Level 1, 2 or 3 for third-quarter 2014 or for the first nine months of 2014.
	A summary of the carrying amount and fair value of FCX’s financial instruments, other than cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities, and dividends payable (refer to Note 7), follows (in millions):
		At September 30, 2014
		Carrying				Fair Value
		Amount				Total				Level 1		Level 2		Level 3
	Assets
	Investment securities:a,b,c
	U.S. core fixed income fund	$	22			$	22			$	—	$	22	$	—
	Money market funds	20				20				20		—		—
	Equity securities	4				4				4		—		—
	Total	46				46				24		22		—
	Legally restricted funds:a,b,d
	U.S. core fixed income fund	50				50				—		50		—
	Government bonds and notes	35				35				—		35		—
	Government mortgage-backed securities	33				33				—		33		—
	Corporate bonds	26				26				—		26		—
	Asset-backed securities	16				16				—		16		—
	Money market funds	8				8				8		—		—
	Municipal bonds	1				1				—		1		—
	Total	169				169				8		161		—
	Derivatives:a,e
	Embedded derivatives in provisional sales/purchase
	contracts in a gross asset position	12				12				—		12		—
	Copper futures and swap contracts	1				1				1		—		—
	Total	13				13				1		12		—
	Total assets					$	228			$	33	$	195	$	—
	Liabilities
	Derivatives:a,e
	Embedded derivatives in provisional sales/purchase
	contracts in a gross liability position	$	75			$	75			$	—	$	75	$	—
	Crude oil options	182				182				—		—		182
	Copper futures and swap contracts	5				5				5		—		—
	Copper forward contracts	4				4				2		2		—
	Total	266				266				7		77		182
	Long-term debt, including current portionf	19,737				19,882				—		19,882		—
	Total liabilities					$	20,148			$	7	$	19,959	$	182
		At December 31, 2013
		Carrying				Fair Value
		Amount				Total				Level 1		Level 2		Level 3
	Assets
	Investment securities:a,b
	U.S. core fixed income fund	$	21			$	21			$	—	$	21	$	—
	Money market funds	18				18				18		—		—
	Equity securities	5				5				5		—		—
	Total	44				44				23		21		—
	Legally restricted funds:a,b,d
	U.S. core fixed income fund	48				48				—		48		—
	Government mortgage-backed securities	34				34				—		34		—
	Corporate bonds	28				28				—		28		—
	Government bonds and notes	28				28				—		28		—
	Money market funds	28				28				28		—		—
	Asset-backed securities	15				15				—		15		—
	Municipal bonds	1				1				—		1		—
	Total	182				182				28		154		—
	Derivatives:a,e
	Embedded derivatives in provisional sales/purchase
	contracts in a gross asset position	63				63				—		63		—
	Copper futures and swap contracts	6				6				5		1		—
	Total	69				69				5		64		—
	Total assets					$	295			$	56	$	239	$	—
	Liabilities
	Derivatives:a
Embedded derivatives in provisional sales/purchase
contracts in a gross liability positione	$	16			$	16			$	—	$	16	$	—
Crude oil optionse	309				309				—		—		309
Natural gas swapse	4				4				—		4		—
Copper forward contractse	1				1				1		—		—
Plains Offshore warrantsg	2				2				—		—		2
Total	332				332				1		20		311
Long-term debt, including current portionf	20,706				20,487				—		20,487		—
Total liabilities					$	20,819			$	1	$	20,507	$	311
a.	Recorded at fair value.
b.	Current portion included in other current assets and long-term portion included in other assets.
c.	Excluded $115 million of time deposits (which approximated fair value) at September 30, 2014 (included in other assets), associated with an assurance bond to support PTFI's commitment for smelter development in Indonesia (refer to Note 9 for further discussion).
d.	Excluded time deposits (which approximated fair value) of $9 million at September 30, 2014 (included in other current assets), associated with a customs audit assessment at PT-FI, and $15 million included in other current assets and $210 million in other assets at December 31, 2013, associated with the Cerro Verde royalty dispute.
e.	Refer to Note 7 for further discussion and balance sheet classifications. Crude oil options are net of $269 million at September 30, 2014, and $444 million at December 31, 2013, for deferred premiums and accrued interest.
f.	Recorded at cost except for debt assumed in acquisitions, which were recorded at fair value at the respective acquisition dates.
g.	Included in other liabilities.
Valuation Techniques
Money market funds are classified within Level 1 of the fair value hierarchy because they are valued using quoted market prices in active markets.
Fixed income securities (U.S. core fixed income funds, government securities, corporate bonds, asset-backed securities and municipal bonds) are valued using a bid evaluation price or a mid-evaluation price. A bid evaluation price is an estimated price at which a dealer would pay for a security. A mid-evaluation price is the average of the estimated price at which a dealer would sell a security and the estimated price at which a dealer would pay for a security. These evaluations are based on quoted prices, if available, or models that use observable inputs and, as such, are classified within Level 2 of the fair value hierarchy.
Equity securities are valued at the closing price reported on the active market on which the individual securities are traded and, as such, are classified within Level 1 of the fair value hierarchy.
FCX’s embedded derivatives on provisional copper concentrate, copper cathode and gold purchases and sales have critical inputs of quoted monthly LME or COMEX copper forward prices and the London gold forward price at each reporting date based on the month of maturity; however, FCX's contracts themselves are not traded on an exchange. As a result, these derivatives are classified within Level 2 of the fair value hierarchy.
FCX's derivative financial instruments for crude oil options are valued using an option pricing model, which uses various inputs including IntercontinentalExchange, Inc. crude oil prices, volatilities, interest rates and contract terms. FCX's derivative financial instruments for natural gas swaps are valued using a pricing model that has various inputs including NYMEX price quotations, interest rates and contract terms. Valuations are adjusted for credit quality, using the counterparties' credit quality for asset balances and FCX's credit quality for liability balances (which considers the impact of netting agreements on counterparty credit risk, including whether the position with the counterparty is a net asset or net liability). For asset balances, FCX uses the credit default swap value for counterparties when available or the spread between the risk-free interest rate and the yield rate on the counterparties' publicly traded debt for similar instruments. The 2014 natural gas swaps are classified within Level 2 of the fair value hierarchy because the inputs used in the valuation models are directly or indirectly observable for substantially the full term of the instruments. The 2014 and 2015 crude oil options are classified within Level 3 of the fair value hierarchy because the inputs used in the valuation models are not observable for substantially the full term of the instruments. The significant unobservable inputs used in the fair value measurement of the crude oil options are implied volatilities and deferred premiums. Significant increases (decreases) in implied volatilities in isolation would result in a significantly higher (lower) fair value measurement. The implied volatilities ranged from 17 percent to 33 percent, with a weighted average of 21 percent. The deferred premiums ranged from $5.15 per barrel to $7.22 per barrel, with a weighted average of $6.64 per barrel. Refer to Note 7 for further discussion of these derivative financial instruments.
FCX’s derivative financial instruments for copper futures and swap contracts and copper forward contracts that are traded on the respective exchanges are classified within Level 1 of the fair value hierarchy because they are valued using quoted monthly COMEX or LME prices at each reporting date based on the month of maturity (refer to Note 7 for further discussion). Certain of these contracts are traded on the over-the-counter market and are classified within Level 2 of the fair value hierarchy based on COMEX and LME forward prices.
The fair value of warrants associated with the Plains Offshore Preferred Stock was determined with an option pricing model that used unobservable inputs. The inputs used in the valuation model are the estimated fair value of the underlying Plains Offshore common stock, expected exercise price, expected term, expected volatility and risk-free interest rate. The assumptions used in the valuation model are highly subjective because the common stock of Plains Offshore is not publicly traded. As a result, these warrants are classified within Level 3 of the fair value hierarchy.
Long-term debt, including the current portion, is not actively traded and is valued using prices obtained from a readily available pricing source and, as such, is classified within Level 2 of the fair value hierarchy.
The techniques described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while FCX believes its valuation techniques are appropriate and consistent with other market participants, the use of different techniques or assumptions to determine fair value of certain financial instruments could result in a different fair value measurement at the reporting date. There have been no changes in the techniques used at September 30, 2014.
A summary of the changes in the fair value of FCX's Level 3 instruments follows (in millions):
	Crude Oil				Plains Offshore
	Options				Warrants
Fair value at December 31, 2013	$	(309	)		$	(2	)
Net realized losses	(21		)	a	—
Net unrealized (losses) gains included in earnings related to assets and liabilities still held at the end of the period	(29		)	b	2			c
Settlement payments	177				—
Fair value at September 30, 2014	$	(182	)		$	—
a.	Included net realized losses of $20 million recorded in revenues and $1 million of interest expense associated with the deferred premiums.
b.	Included net unrealized losses of $28 million recorded in revenues and $1 million of interest expense associated with the deferred premiums.
c.	Recorded in other income, net.

Contingencies_and_Commitments_

Contingencies and Commitments (Unaudited)	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	CONTINGENCIES AND COMMITMENTS
	Litigation. During third-quarter 2014, there were no significant developments in previously reported legal proceedings included in Note 12 of FCX’s annual report on Form 10-K for the year ended December 31, 2013, as updated in Note 9 of FCX's quarterly report on Form 10-Q for the quarter ended March 31, 2014.
	Tax and Other Matters. Cerro Verde Royalty Dispute. There were no significant changes to the Cerro Verde royalty dispute during the first nine months of 2014 (refer to Note 12 of FCX’s annual report on Form 10-K for the year ended December 31, 2013, for further discussion of this matter).
	Indonesia Tax Matters. As reported in Note 12 of FCX’s annual report on Form 10-K for the year ended December 31, 2013, PT-FI has received assessments from the Indonesian tax authorities for additional taxes and interest related to various audit exceptions for the years 2005, 2006, 2007, 2008 and 2011. PT-FI has filed objections to these assessments because it believes it has properly determined and paid its taxes.
	Required estimated income tax payments for 2012 significantly exceeded PT-FI’s 2012 reported income tax liability, which resulted in a $303 million overpayment (included in other accounts receivable in the condensed consolidated balance sheets at December 31, 2013). During second-quarter 2014, the Indonesian tax authorities issued tax assessments for 2012 of $137 million and other offsets of $15 million, and refunded the balance of $151 million (before foreign exchange adjustments). PT-FI expects to file objections and use other means available under Indonesian tax laws and regulations to recover all overpayments that remain in dispute.
	As of September 30, 2014, PT-FI had $392 million included in other assets for amounts paid on disputed tax assessments, which it believes are collectable.
	Mining Contract - Indonesia. On July 25, 2014, PT-FI entered into a Memorandum of Understanding (MOU) with the Indonesian government under which PT-FI and the government agreed to negotiate an amended Contract of Work (COW) to address provisions related to the size of PT-FI’s concession area, royalties and taxes, domestic processing and refining, divestment, local content, and continuation of operations post-2021.
	Under the MOU, provisions to be addressed in the negotiation of an amended COW include provisions for the development of new copper smelting and refining capacity in Indonesia, which will take into consideration an equitable sharing of costs between PT-FI (and any partners in the project) and the Indonesian government through fiscal incentives, provisions for divestment to the Indonesian government and/or Indonesian nationals of up to a 30 percent interest (an additional 20.64 percent interest) in PT-FI at fair value, and continuation of operations from 2022 through 2041. The MOU provides that negotiations for an amended COW will take into consideration PT-FI’s need for assurance of legal and fiscal terms post-2021 for PT-FI to continue with its large-scale investment program for the development of its underground reserves. PT-FI is engaged in discussions with the Indonesian government regarding an amended COW.
	Effective with the signing of the MOU, PT-FI provided a $115 million assurance bond to support its commitment for smelter development, agreed to increase royalties to 4.0 percent for copper and 3.75 percent for gold from the previous rates of 3.5 percent for copper and 1.0 percent for gold, and to pay export duties set forth in a new regulation. The Indonesian government revised its January 2014 regulations (as discussed in Note 13 of FCX’s annual report on Form 10-K for the year ended December 31, 2013) regarding export duties to incorporate reduced rates for copper concentrate exports for companies engaged in smelter development. The revised regulations provide for duties on copper concentrate exports during smelter development initially at 7.5 percent, declining to 5.0 percent when development progress exceeds 7.5 percent and is eliminated when development progress exceeds 30 percent. In addition, PT-FI is required to apply for renewal of export permits at six-month intervals, with the next renewal date in January 2015.
	Under the MOU, no terms of the COW other than those relating to the export duties, smelter bond and royalties described previously will be changed until the completion of an amended COW.

Business_Segments_Unaudited

Business Segments (Unaudited)	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Business Segments	'
	BUSINESS SEGMENTS
	FCX has organized its operations into six primary divisions – North America copper mines, South America mining, Indonesia mining, Africa mining, Molybdenum mines and U.S. oil and gas operations. Notwithstanding this structure, FCX internally reports information on a mine-by-mine basis for its mining operations. Therefore, FCX concluded that its operating segments include individual mines or operations relative to its mining operations. For oil and gas operations, FCX determines its operating segments on a country-by-country basis. FCX's U.S. oil and gas operations reflect the results of FM O&G beginning June 1, 2013. Operating segments that meet certain thresholds are reportable segments, which are disclosed separately in the following tables.
	On November 3, 2014, FCX completed the sale of its 80 percent ownership interests in the Candelaria mine, a separately reported segment, and the Ojos del Salado mine, reported as a component of other South America mines. Refer to Note 13 for further discussion.
	Intersegment Sales. Intersegment sales between FCX’s mining operations are based on similar arms-length transactions with third parties at the time of the sale. Intersegment sales may not be reflective of the actual prices ultimately realized because of a variety of factors, including additional processing, timing of sales to unaffiliated customers and transportation premiums.
	FCX defers recognizing profits on sales from its mining operations to other divisions, including Atlantic Copper and on 25 percent of PT-FI's sales to PT Smelting until final sales to third parties occur. Quarterly variations in ore grades, the timing of intercompany shipments and changes in product prices result in variability in FCX's net deferred profits and quarterly earnings.
	Allocations. FCX allocates certain operating costs, expenses and capital expenditures to its operating divisions and individual segments. However, not all costs and expenses applicable to an operation are allocated. U.S. federal and state income taxes are recorded and managed at the corporate level, whereas foreign income taxes are recorded and managed at the applicable country level. In addition, most mining exploration and research activities are managed on a consolidated basis, and those costs along with some selling, general and administrative costs are not allocated to the operating divisions or individual segments. Accordingly, the following segment information reflects management determinations that may not be indicative of what the actual financial performance of each operating division or segment would be if it was an independent entity.
	Business Segments
	(In millions)	Mining Operations
		North America Copper Mines								South America								Indonesia			Africa
																											Atlantic			Other											Corporate,
																							Molyb-				Copper			Mining							U.S.				Other
				Other						Cerro		Candel-		Other									denum		Rod &		Smelting			& Elimi-				Total			Oil & Gas				& Elimi-				FCX
		Morenci		Mines			Total			Verde		aria		Mines		Total		Grasberg			Tenke		Mines		Refining		& Refining			nations				Mining			Operations				nations				Total
	Three Months Ended September 30, 2014
	Revenues:
	Unaffiliated customers	$	140	$	79		$	219		$	295	$	141	$	300	$	736	$	1,086	a	$	379	$	—	$	1,219	$	597		$	470		b	$	4,706		$	990		c	$	—			$	5,696
	Intersegment	428		843			1,271			63		48		—		111		167			49		173		8		4			(1,783		)		—			—				—				—
	Production and delivery	341		561			902			178		142		151		471		700			206		86		1,220		578			(1,283		)		2,880			273				(1		)		3,152
	Depreciation, depletion and amortization	51		82			133			41		14		47		102		92			58		25		2		11			15				438			504				3				945
	Impairment of oil and gas properties	—		—			—			—		—		—		—		—			—		—		—		—			—				—			308				—				308
	Selling, general and administrative expenses	—		1			1			—		—		1		1		27			3		—		—		4			7				43			55				60				158
	Mining exploration and research expenses	—		2			2			—		—		—		—		—			—		—		—		—			27				29			—				—				29
	Environmental obligations and shutdown costs	—		(5		)	(5		)	—		—		—		—		—			—		—		—		—			23				18			—				—				18
	Net gain on sales of assets	—		(14		)	(14		)	—		—		—		—		—			—		—		—		—			(32		)		(46		)	—				—				(46		)
	Operating income (loss)	176		295			471			139		33		101		273		434			161		62		5		8			(70		)		1,344			(150		)		(62		)		1,132
	Interest expense, net	1		—			1			1		—		—		1		—			—		—		—		3			19				24			51				83				158
	Provision for (benefit from) income taxes	—		—			—			47		4		91		142		181			36		—		—		—			—				359			—				(10		)		349
	Total assets at September 30, 2014	3,689		5,742			9,431			7,030		1,511		2,210		10,751		8,537			5,010		2,089		282		948			1,025				38,073			25,328				575				63,976
	Capital expenditures	158		30			188			416		7		16		439		243			40		12		1		3			11				937			908				8				1,853
	Three Months Ended September 30, 2013
	Revenues:
	Unaffiliated customers	$	100	$	145		$	245		$	434	$	318	$	300	$	1,052	$	1,108	a	$	406	$	—	$	1,247	$	514		$	417		b	$	4,989		$	1,176		c	$	—			$	6,165
	Intersegment	375		681			1,056			27		60		—		87		3			14		121		6		2			(1,289		)		—			—				—				—
	Production and delivery	287		520			807			175		163		156		494		617			190		82		1,245		523			(916		)		3,042			288				2				3,332
	Depreciation, depletion and amortization	35		67			102			35		19		31		85		60			64		21		2		10			9				353			563				3				919
	Selling, general and administrative expenses	—		1			1			—		1		1		2		29			3		—		—		5			5				45			51				62				158
	Mining exploration and research expenses	—		2			2			—		—		—		—		1			—		—		—		—			52				55			—				2				57
	Environmental obligations and shutdown costs	—		5			5			—		—		—		—		—			—		—		—		—			(13		)		(8		)	—				—				(8		)
	Operating income (loss)	153		231			384			251		195		112		558		404			163		18		6		(22		)	(9		)		1,502			274				(69		)		1,707
	Interest expense, net	—		—			—			—		—		—		—		—			—		—		—		4			20				24			74				64				162
	Provision for income taxes	—		—			—			92		67		35		194		173			33		—		—		—			—				400			—				99				499
	Total assets at September 30, 2013	2,915		5,734			8,649			6,440		1,612		2,478		10,530		7,399			4,862		2,094		308		691			1,267				35,800			26,347				451				62,598
	Capital expenditures	172		80			252			224		23		17		264		209			52		46		1		20			51				895			738				12				1,645
	a.	Included PT-FI’s sales to PT Smelting totaling $628 million in third-quarter 2014 and $458 million in third-quarter 2013.
	b.	Included revenues from FCX's molybdenum sales company, which included sales of molybdenum produced by the Molybdenum mines and by certain of the North and South America copper mines.
	c.	Included net mark-to-market gains (losses) associated with crude oil and natural gas derivative contracts totaling $64 million in third-quarter 2014 and $(170) million in third-quarter 2013.
	(In millions)	Mining Operations
		North America Copper Mines								South America								Indonesia			Africa
																											Atlantic			Other											Corporate,
																							Molyb-				Copper			Mining							U.S.				Other
				Other						Cerro		Candel-		Other									denum		Rod &		Smelting			& Elimi-				Total			Oil & Gas				& Elimi-				FCX
		Morenci		Mines			Total			Verde		aria		Mines		Total		Grasberg			Tenke		Mines		Refining		& Refining			nations				Mining			Operations				nations				Total
	Nine Months Ended September 30, 2014
	Revenues:
	Unaffiliated customers	$	215	$	195		$	410		$	996	$	482	$	905	$	2,383	$	2,071	a	$	1,071	$	—	$	3,599	$	1,808		$	1,374		b	$	12,716		$	3,487		c	$	—			$	16,203
	Intersegment	1,346		2,489			3,835			150		238		5		393		175			102		469		24		15			(5,013		)		—			—				—				—
	Production and delivery	936		1,622			2,558			538		456		483		1,477		1,594			556		243		3,601		1,784			(3,753		)		8,060			913				(2		)		8,971
	Depreciation, depletion and amortization	128		240			368			120		49		115		284		194			172		71		7		31			51				1,178			1,736				10				2,924
	Impairment of oil and gas properties	—		—			—			—		—		—		—		—			—		—		—		—			—				—			308				—				308
	Selling, general and administrative expenses	1		2			3			2		1		2		5		73			9		—		—		13			20				123			171				163				457
	Mining exploration and research expenses	—		6			6			—		—		—		—		—			—		—		—		—			87				93			—				—				93
	Environmental obligations and shutdown costs	—		(5		)	(5		)	—		—		—		—		—			—		—		—		—			105				100			—				—				100
	Net gain on sales of assets	—		(14		)	(14		)	—		—		—		—		—			—		—		—		—			(32		)		(46		)	—				—				(46		)
Operating income (loss)	496		833			1,329			486		214		310		1,010		385			436		155		15		(5		)	(117		)		3,208			359				(171		)		3,396
Interest expense, net	2		1			3			1		—		—		1		—			—		—		—		10			55				69			201				213				483
Provision for income taxes	—		—			—			177		72		160		409		166			93		—		—		—			—				668			—				366				1,034
Capital expenditures	691		124			815			1,207		29		42		1,278		722			100		45		3		9			38				3,010			2,392				13				5,415
Nine Months Ended September 30, 2013
Revenues:
Unaffiliated customers	$	218	$	266		$	484		$	1,035	$	709	$	922	$	2,666	$	2,443	a	$	1,199	$	—	$	3,842	$	1,730		$	1,157		b	$	13,521		$	1,512		c	$	3			$	15,036
Intersegment	1,255		2,256			3,511			222		216		—		438		190			24		408		20		12			(4,603		)		—			—				—				—
Production and delivery	885		1,574			2,459			535		504		446		1,485		1,743			560		240		3,835		1,726			(3,531		)		8,517			377				10				8,904
Depreciation, depletion and amortization	105		207			312			105		44		93		242		173			179		62		7		32			31				1,038			732				8				1,778
Selling, general and administrative expenses	1		3			4			2		2		1		5		82			9		—		—		14			23				137			65				255				457
Mining exploration and research expenses	—		3			3			—		—		—		—		1			—		—		—		—			161				165			—				8				173
Environmental obligations and shutdown costs	—		(1		)	(1		)	—		—		—		—		—			—		—		—		—			24				23			—				—				23
Operating income (loss)	482		736			1,218			615		375		382		1,372		634			475		106		20		(30		)	(154		)		3,641			338				(278		)		3,701
Interest expense, net	3		1			4			2		—		—		2		12			2		—		—		12			60				92			100				159				351
Provision for income taxes	—		—			—			215		131		126		472		289			99		—		—		—			—				860			—				107			d	967
Capital expenditures	529		266			795			596		91		47		734		720			155		128		3		39			91				2,665			928				30				3,623
a.	Included PT-FI’s sales to PT Smelting totaling $1.5 billion for the first nine months of 2014 and $1.2 billion for the first nine months of 2013.
b.	Included revenues from FCX's molybdenum sales company, which included sales of molybdenum produced by the Molybdenum mines and by certain of the North and South America copper mines.
c.	Included net mark-to-market losses associated with crude oil and natural gas derivative contracts totaling $56 million for the first nine months of 2014 and $205 million for the period from June 1, 2013 to September 30, 2013.
d.	Included $183 million of net benefits resulting from second-quarter 2013 oil and gas acquisitions.

Guarantor_Financial_Statements

Guarantor Financial Statements (Unaudited) (Notes)	9 Months Ended
	Sep. 30, 2014
Guarantor Financial Statements [Abstract]	'
Guarantor Financial Statements [Text Block]	'
	GUARANTOR FINANCIAL STATEMENTS
	In March 2013, FCX completed the sale of $6.5 billion of senior notes. These notes, along with FCX's senior notes sold in February 2012, are fully and unconditionally guaranteed on a senior basis jointly and severally by FM O&G LLC, as guarantor, which is a 100 percent owned subsidiary of FM O&G and FCX. The guarantee is an unsecured obligation of the guarantor and ranks equal in right of payment with all existing and future indebtedness of FM O&G LLC, including indebtedness under the revolving credit facility. The guarantee ranks senior in right of payment with all of FM O&G LLC's future subordinated obligations and is effectively subordinated in right of payment to any debt of FM O&G LLC's subsidiaries. In the future, FM O&G LLC's guarantee may be released or terminated for certain obligations under the following circumstances: (i) all or substantially all of the equity interests or assets of FM O&G LLC are sold to a third party; or (ii) FM O&G LLC no longer has any obligations under any FM O&G senior notes or any refinancing thereof and no longer guarantees any obligations of FCX under the revolver, the term loan or any other senior debt.
	The following condensed consolidating financial information includes information regarding FCX, as issuer, FM O&G LLC, as guarantor, and all other non-guarantor subsidiaries of FCX. Included are the condensed consolidating balance sheets at September 30, 2014, and December 31, 2013, and the related condensed consolidating statements of comprehensive income for the three and nine months ended September 30, 2014 and 2013, and condensed consolidating statements of cash flows for the nine months ended September 30, 2014 and 2013 (in millions), which should be read in conjunction with FCX's notes to the consolidated financial statements.
	CONDENSED CONSOLIDATING BALANCE SHEET
	September 30, 2014
		FCX				FM O&G LLC				Non-guarantor								Consolidated
		Issuer				Guarantor				Subsidiaries				Eliminations				FCX
	ASSETS
	Current assets:
	Cash and cash equivalents	$	—			$	1			$	657			$	—			$	658
	Accounts receivable	348				1,814				2,187				(2,042		)		2,307
	Other current assets	104				73				5,889				—				6,066
	Total current assets	452				1,888				8,733				(2,042		)		9,031
	Property, plant, equipment and mining development costs, net	23				45				26,236				—				26,304
	Oil and gas properties, net - full cost method:
	Subject to amortization, less accumulated amortization	—				4,235				6,727				344				11,306
	Not subject to amortization	—				2,346				8,685				—				11,031
	Investments in consolidated subsidiaries	33,908				10,492				13,063				(57,463		)		—
	Goodwill	—				217				1,500				—				1,717
	Other assets	6,512				3,913				4,439				(10,277		)		4,587
	Total assets	$	40,895			$	23,136			$	69,383			$	(69,438	)		$	63,976
	LIABILITIES AND EQUITY
	Current liabilities	$	1,664			$	985			$	5,294			$	(1,600	)		$	6,343
	Long-term debt, less current portion	13,355				5,301				6,562				(7,243		)		17,975
	Deferred income taxes	4,233			a	—				3,326				—				7,559
	Environmental and asset retirement obligations, less current portion	—				302				3,352				—				3,654
	Other liabilities	52				3,403				1,751				(3,476		)		1,730
	Total liabilities	19,304				9,991				20,285				(12,319		)		37,261
	Redeemable noncontrolling interest	—				—				749				—				749
	Equity:
	Stockholders' equity	21,591				13,145				44,460				(57,605		)		21,591
	Noncontrolling interests	—				—				3,889				486				4,375
	Total equity	21,591				13,145				48,349				(57,119		)		25,966
	Total liabilities and equity	$	40,895			$	23,136			$	69,383			$	(69,438	)		$	63,976
	a.	All U.S. related deferred income taxes are recorded at the parent company.
	CONDENSED CONSOLIDATING BALANCE SHEET
	December 31, 2013
		FCX				FM O&G LLC				Non-guarantor								Consolidated
		Issuer				Guarantor				Subsidiaries				Eliminations				FCX
	ASSETS
	Current assets:
	Cash and cash equivalents	$	—			$	—			$	1,985			$	—			$	1,985
	Accounts receivable	855				659				2,258				(1,210		)		2,562
	Other current assets	114				38				5,273				—				5,425
	Total current assets	969				697				9,516				(1,210		)		9,972
	Property, plant, equipment and mining development costs, net	27				43				23,972				—				24,042
	Oil and gas properties, net - full cost method:
	Subject to amortization, less accumulated amortization	—				6,207				6,265				—				12,472
	Not subject to amortization	—				2,649				8,238				—				10,887
	Investments in consolidated subsidiaries	31,162				9,712				12,468				(53,342		)		—
	Goodwill	—				437				1,479				—				1,916
	Other assets	7,126				4,640				4,128				(11,710		)		4,184
	Total assets	$	39,284			$	24,385			$	66,066			$	(66,262	)		$	63,473
	LIABILITIES AND EQUITY
	Current liabilities	$	1,003			$	758			$	4,222			$	(1,210	)		$	4,773
	Long-term debt, less current portion	13,184				7,199				8,056				(8,045		)		20,394
	Deferred income taxes	4,137			a	—				3,273				—				7,410
	Environmental and asset retirement obligations, less current portion	—				301				2,958				—				3,259
	Other liabilities	26				3,436				1,893				(3,665		)		1,690
	Total liabilities	18,350				11,694				20,402				(12,920		)		37,526
	Redeemable noncontrolling interest	—				—				716				—				716
	Equity:
	Stockholders' equity	20,934				12,691				41,100				(53,791		)		20,934
Noncontrolling interests	—				—				3,848				449				4,297
Total equity	20,934				12,691				44,948				(53,342		)		25,231
Total liabilities and equity	$	39,284			$	24,385			$	66,066			$	(66,262	)		$	63,473
a.	All U.S. related deferred income taxes are recorded at the parent company.
CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME
Three and Nine Months Ended September 30, 2014
Three Months Ended September 30, 2014
	FCX				FM O&G LLC				Non-guarantor								Consolidated
	Issuer				Guarantor				Subsidiaries				Eliminations				FCX
Revenues	$	—			$	370			$	5,326			$	—			$	5,696
Total costs and expenses	12				916				3,966				(330		)		4,564
Operating (loss) income	(12		)		(546		)		1,360				330				1,132
Interest expense, net	(99		)		(38		)		(37		)		16				(158		)
Net gain on early extinguishment of debt	—				58				—				—				58
Other income (expense), net	15				—				24				(16		)		23
Benefit from (provision for) income taxes	46				(104		)		(166		)		(125		)		(349		)
Equity in affiliated companies' net earnings (losses)	602				381				(111		)		(874		)		(2		)
Net income (loss)	552				(249		)		1,070				(669		)		704
Net income and preferred dividends attributable to noncontrolling interests	—				—				(130		)		(22		)		(152		)
Net income (loss) attributable to FCX common stockholders	$	552			$	(249	)		$	940			$	(691	)		$	552
Other comprehensive income	—				—				7				—				7
Total comprehensive income (loss)	$	552			$	(249	)		$	947			$	(691	)		$	559
Nine Months Ended September 30, 2014
	FCX				FM O&G LLC				Non-guarantor								Consolidated
	Issuer				Guarantor				Subsidiaries				Eliminations				FCX
Revenues	$	—			$	1,584			$	14,619			$	—			$	16,203
Total costs and expenses	44				1,931				11,170				(338		)		12,807
Operating (loss) income	(44		)		(347		)		3,449				338				3,396
Interest expense, net	(268		)		(123		)		(146		)		54				(483		)
Net (loss) gain on early extinguishment of debt	(1		)		64				—				—				63
Other income (expense), net	52				1				49				(54		)		48
Benefit from (provision for) income taxes	51				(121		)		(836		)		(128		)		(1,034		)
Equity in affiliated companies' net earnings (losses)	1,754				637				228				(2,619		)		—
Net income (loss)	1,544				111				2,744				(2,409		)		1,990
Net income and preferred dividends attributable to noncontrolling interests	—				—				(421		)		(25		)		(446		)
Net income (loss) attributable to FCX common stockholders	$	1,544			$	111			$	2,323			$	(2,434	)		$	1,544
Other comprehensive income	—				—				11				—				11
Total comprehensive income (loss)	$	1,544			$	111			$	2,334			$	(2,434	)		$	1,555
CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME
Three and Nine Months Ended September 30, 2013
Three Months Ended September 30, 2013
	FCX				FM O&G LLC				Non-guarantor								Consolidated
	Issuer				Guarantor				Subsidiaries				Eliminations				FCX
Revenues	$	—			$	512			$	5,653			$	—			$	6,165
Total costs and expenses	11				452				3,995				—				4,458
Operating (loss) income	(11		)		60				1,658				—				1,707
Interest expense, net	(94		)		(51		)		(40		)		23				(162		)
Other income (expense), net	24				—				2				(23		)		3
Benefit from (provision for) income taxes	35				(5		)		(529		)		—				(499		)
Equity in affiliated companies' net earnings (losses)	867				187				47				(1,102		)		(1		)
Net income (loss)	821				191				1,138				(1,102		)		1,048
Net income and preferred dividends attributable to noncontrolling interests	—				—				(202		)		(25		)		(227		)
Net income (loss) attributable to FCX common stockholders	$	821			$	191			$	936			$	(1,127	)		$	821
Other comprehensive income	—				—				11				—				11
Total comprehensive income (loss)	$	821			$	191			$	947			$	(1,127	)		$	832
Nine Months Ended September 30, 2013
	FCX				FM O&G LLC				Non-guarantor								Consolidated
	Issuer				Guarantor				Subsidiaries				Eliminations				FCX
Revenues	$	—			$	674			$	14,362			$	—			$	15,036
Total costs and expenses	106				587				10,642				—				11,335
Operating (loss) income	(106		)		87				3,720				—				3,701
Interest expense, net	(222		)		(63		)		(104		)		38				(351		)
Loss on early extinguishment of debt	(45		)		—				—				—				(45		)
Gain on investment in MMR	128				—				—				—				128
Other income (expense), net	39				—				12				(38		)		13
Benefit from (provision for) income taxes	61				(10		)		(1,018		)		—				(967		)
Equity in affiliated companies' net earnings (losses)	2,096				207				1				(2,301		)		3
Net income (loss)	1,951				221				2,611				(2,301		)		2,482
Net income and preferred dividends attributable to noncontrolling interests	—				—				(494		)		(37		)		(531		)
Net income (loss) attributable to FCX common stockholders	$	1,951			$	221			$	2,117			$	(2,338	)		$	1,951
Other comprehensive income	—				—				22				—				22
Total comprehensive income (loss)	$	1,951			$	221			$	2,139			$	(2,338	)		$	1,973
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
Nine Months Ended September 30, 2014
	FCX				FM O&G LLC				Non-guarantor								Consolidated
	Issuer				Guarantor				Subsidiaries				Eliminations				FCX
Cash flow from operating activities:
Net income (loss)	$	1,544			$	111			$	2,744			$	(2,409	)		$	1,990
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation, depletion and amortization	3				673				2,269				(21		)		2,924
Impairment of oil and gas properties	—				625				—				(317		)		308
Net losses on crude oil and natural gas derivative contracts	—				56				—				—				56
Net loss (gain) on early extinguishment of debt	1				(64		)		—				—				(63		)
Equity in (earnings) losses of consolidated subsidiaries	(1,754		)		(637		)		4				2,387				—
Other, net	87				(17		)		(73		)		—				(3		)
(Increases) decreases in working capital and changes in other tax payments, excluding amounts from dispositions	(217		)		(1,166		)		684				—				(699		)
Net cash (used in) provided by operating activities	(336		)		(419		)		5,628				(360		)		4,513
Cash flow from investing activities:
Capital expenditures	—				(1,771		)		(3,644		)		—				(5,415		)
Acquisition of Deepwater GOM interests	—				—				(1,421		)		—				(1,421		)
Intercompany loans	1,151				734				—				(1,885		)		—
Investment in consolidated subsidiary	(959		)		(97		)		(696		)		1,752				—
Net proceeds from sale of Eagle Ford shale assets	—				2,971				—				—				2,971
Other, net	—				32				189				—				221
Net cash provided by (used in) investing activities	192				1,869				(5,572		)		(133		)		(3,644		)
Cash flow from financing activities:
Proceeds from debt	2,806				—				540				—				3,346
Repayments of debt	(1,686		)		(1,996		)		(514		)		—				(4,196		)
Intercompany loans	—				213				(2,098		)		1,885				—
Cash dividends and distributions paid, and contributions received	(979		)		336				691				(1,392		)		(1,344		)
Other, net	3				(2		)		(3		)		—				(2		)
Net cash provided by (used in) financing activities	144				(1,449		)		(1,384		)		493				(2,196		)
Net increase (decrease) in cash and cash equivalents	—				1				(1,328		)		—				(1,327		)
Cash and cash equivalents at beginning of period	—				—				1,985				—				1,985
Cash and cash equivalents at end of period	$	—			$	1			$	657			$	—			$	658
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
Nine Months Ended September 30, 2013
	FCX				FM O&G LLC					Non-guarantor									Consolidated
	Issuer				Guarantor					Subsidiaries					Eliminations				FCX
Cash flow from operating activities:
Net income (loss)	$	1,951			$	221				$	2,611				$	(2,301	)		$	2,482
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation, depletion and amortization	3				341					1,434					—				1,778
Net losses on crude oil and natural gas derivative contracts	—				205					—					—				205
Net loss on early extinguishment of debt	45				—					—					—				45
Gain on investment in MMR	(128		)		—					—					—				(128		)
Equity in (earnings) losses of consolidated subsidiaries	(2,096		)		(207		)			2					2,301				—
Other, net	8				(15		)			(143		)			—				(150		)
Decreases (increases) in working capital and changes in other tax payments, excluding amounts from acquisitions	112				518					(1,119		)			—				(489		)
Net cash (used in) provided by operating activities	(105		)		1,063					2,785					—				3,743
Cash flow from investing activities:
Capital expenditures	—				(621		)			(3,002		)			—				(3,623		)
Acquisitions, net of cash acquired	(5,437		)		—					(4		)			—				(5,441		)
Intercompany loans	793				—					(1,095		)	—		302				—
Dividends from consolidated subsidiary	321				—			—		—					(321		)		—
Other, net	14				32					(70		)			—				(24		)
Net cash (used in) provided by investing activities	(4,309		)		(589		)			(4,171		)			(19		)		(9,088		)
Cash flow from financing activities:
Proceeds from debt	11,085				—					144					—				11,229
Repayments of debt and redemption of MMR preferred stock	(4,501		)		(416		)			(126		)			—				(5,043		)
Intercompany loans	—				(56		)			358					(302		)		—
Cash dividends and distributions paid	(1,957		)		—					(478		)			321				(2,114		)
Other, net	(213		)		—					—					—				(213		)
Net cash provided by (used in) financing activities	4,414				(472		)			(102		)			19				3,859
Net increase (decrease) in cash and cash equivalents	—				2					(1,488		)			—				(1,486		)
Cash and cash equivalents at beginning of period	—				—					3,705					—				3,705
Cash and cash equivalents at end of period	$	—			$	2				$	2,217				$	—			$	2,219

New_Accounting_Standard_Unaudi

New Accounting Standard (Unaudited)	9 Months Ended
	Sep. 30, 2014
New Accounting Standards [Abstract]	'
New Accounting Standard	'
	NEW ACCOUNTING STANDARDS
	In May 2014, the Financial Accounting Standards Board (FASB) issued an Accounting Standards Update (ASU), which outlines a single comprehensive model and supersedes most of the current revenue recognition guidance. For public entities, this ASU is effective for annual reporting periods beginning after December 15, 2016, and interim periods within that reporting period. Early adoption is not permitted. FCX is evaluating this new guidance, but does not expect it to have a significant impact on its current revenue recognition policies.
	In April 2014, FASB issued an ASU, which revises the guidance for reporting discontinued operations. This ASU amends the definition of a discontinued operation and requires additional disclosures about disposal transactions that do not meet the definition of a discontinued operation. For public entities, this ASU is effective for annual periods beginning on or after December 15, 2014, and interim periods within that year. Early adoption is permitted, but only for disposals (or classifications as held for sale) that have not been reported in financial statements previously issued or available for issuance. FCX adopted this ASU in the first quarter of 2014.

Subsequent_Events_Unaudited

Subsequent Events (Unaudited)	9 Months Ended
	Sep. 30, 2014
Subsequent Events [Abstract]	'
Subsequent Events	'
	SUBSEQUENT EVENTS
	Candelaria and Ojos del Salado Disposition. On November 3, 2014, FCX completed the sale of its 80 percent ownership interests in the Candelaria and Ojos del Salado copper mining operations and supporting infrastructure (Candelaria/Ojos) located in Chile to Lundin Mining Corporation for $1.8 billion in cash, before closing adjustments, and contingent consideration of up to $200 million. Contingent consideration is calculated as five percent of net copper revenues in any annual period over the next five years when the average realized copper price exceeds $4.00 per pound. Excluding contingent consideration, after-tax net proceeds approximated $1.5 billion, and FCX expects to record a gain of approximately $680 million (approximately $450 million after tax) associated with this transaction. The transaction has an effective date of June 30, 2014. FCX expects to use the proceeds from this transaction to repay indebtedness.
	The sale of Candelaria/Ojos does not meet the criteria for classification as a discontinued operation.
	The following table provides the major classes of assets and liabilities associated with Candelaria/Ojos at September 30, 2014 (in millions):
	Current assets	$	449
	Long-term assets	1,160
	Current liabilities	138
	Long-term liabilities	92
	The following table provides net income before income taxes and net income attributable to FCX associated with Candelaria/Ojos (in millions):
			Nine Months Ended
			September 30,
			2014		2013
	Net income before income taxes		$	236	$	391
	Net income attributable to FCX		132		199
	Other. FCX evaluated events after September 30, 2014, and through the date the consolidated financial statements were issued, and determined any events or transactions occurring during this period that would require recognition or disclosure are appropriately addressed in these consolidated financial statements.

Acquisitions_Unaudited_Tables

Acquisitions (Unaudited) (Tables)	9 Months Ended
	Sep. 30, 2014
Acquisitions [Abstract]	'
Business Acquisition, Pro Forma Information [Table Text Block]	'
		Nine Months
		Ended
		September 30, 2013
		(in millions, except per share amounts)
	Revenues	$	17,190
	Operating income	4,617
	Net income from continuing operations	2,683
	Net income attributable to FCX common stockholders	2,134
	Net income per share attributable to FCX common stockholders:
	Basic	$	2.05
	Diluted	2.04

Earnings_Per_Share_Unaudited_T

Earnings Per Share (Unaudited) (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Reconciliation of net income and weighted-average shares of common stock outstanding	'
	The following table sets forth the computation of basic and diluted net income per share (in millions, except per share amounts):
		Three Months Ended							Nine Months Ended
		September 30,							September 30,
		2014				2013			2014				2013
	Net income	$	704			$	1,048		$	1,990			$	2,482
	Net income attributable to noncontrolling interests	(142		)		(218		)	(416		)		(519		)
	Preferred dividends on redeemable noncontrolling interest	(10		)		(9		)	(30		)		(12		)
	Undistributed earnings allocable to participating securities	(2		)		—			(4		)		—
	Net income allocable to FCX common stockholders	$	550			$	821		$	1,540			$	1,951
	Basic weighted-average shares of common stock outstanding	1,039				1,038			1,039				989
	Add shares issuable upon exercise or vesting of dilutive stock options and RSUs	7			a	5			6			a	4
	Diluted weighted-average shares of common stock outstanding	1,046				1,043			1,045				993
	Basic net income per share attributable to FCX common stockholders	$	0.53			$	0.79		$	1.48			$	1.97
	Diluted net income per share attributable to FCX common stockholders	$	0.53			$	0.79		$	1.47			$	1.96
	a.	Excluded shares of common stock associated with outstanding stock options with exercise prices less than the average market price of FCX's common stock that were anti-dilutive totaled approximately 5 million for third-quarter 2014 and 3 million for the nine months ended September 30, 2014.

Inventories_Including_LongTerm1

Inventories, Including Long-Term Mill and Leach Stockpiles (Unaudited) (Tables)	9 Months Ended
	Sep. 30, 2014
Inventories, Including Long Term Mill and Leach Stockpiles [Abstract]	'
Components of inventories	'
	The components of inventories follow (in millions):
		September 30,		December 31, 2013
		2014
	Current inventories:
	Raw materials (primarily concentrates)	$	335	$	238
	Work-in-processa	129		199
	Finished goodsb	1,115		1,146
	Total product inventories	$	1,579	$	1,583
	Mill stockpiles	$	126	$	91
	Leach stockpiles	1,841		1,614
	Total current mill and leach stockpiles	$	1,967	$	1,705
	Total materials and supplies, netc	$	1,943	$	1,730
	Long-term inventories:
	Mill stockpiles	$	787	$	698
	Leach stockpiles	1,782		1,688
	Total long-term mill and leach stockpilesd	$	2,569	$	2,386
	a.	FCX's mining operations also have work-in-process inventories that are reflected as mill and leach stockpiles.
	b.	Primarily included molybdenum concentrates; copper concentrates, anodes, cathodes and rod; and various cobalt products.
	c.	Materials and supplies inventory was net of obsolescence reserves totaling $22 million at September 30, 2014, and $24 million at December 31, 2013.
	d.	Estimated metals in stockpiles not expected to be recovered within the next 12 months.

Income_Taxes_Unaudited_Tables

Income Taxes (Unaudited) (Tables)	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Geographic Sources of Provision for Income Taxes	'
	Geographic sources of FCX's provision for income taxes follow (in millions):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
	U.S. operations	$	38		$	104	a	$	323	b	$	85	a
	International operations	311		c	395			711		c	882
	Total	$	349		$	499		$	1,034		$	967
	a.	As a result of second-quarter 2013 oil and gas acquisitions, FCX recognized a net tax benefit of $183 million, consisting of income tax benefits of $190 million associated with net reductions in FCX's valuation allowances and $69 million related to the release of the deferred tax liability on PXP's investment in MMR common stock; partially offset by income tax expense of $76 million associated with the write off of deferred tax assets related to environmental liabilities.
	b.	Included a $62 million charge for deferred taxes recorded in connection with the allocation of goodwill to the sale of the Eagle Ford shale assets.
	c.	Included a $54 million charge related to changes in Chilean tax rules.

Financial_Instruments_Unaudite1

Financial Instruments (Unaudited) (Tables)	9 Months Ended
	Sep. 30, 2014
Financial Instruments [Abstract]	'
Unrealized gains (losses) for derivative financial instruments that are designated and qualify as fair value hedge transactions and for the related hedged item	'
	A summary of gains (losses) recognized in revenues for derivative financial instruments related to commodity contracts that are designated and qualify as fair value hedge transactions, along with the unrealized gains (losses) on the related hedged item follows (in millions):
		Three Months Ended								Nine Months Ended
		September 30,								September 30,
		2014				2013				2014				2013
	Copper futures and swap contracts:
	Unrealized gains (losses):
	Derivative financial instruments	$	(10	)		$	16			$	(10	)		$	(2	)
	Hedged item – firm sales commitments	10				(16		)		10				2
	Realized gains (losses):
	Matured derivative financial instruments	1				(3		)		(3		)		(17		)
Schedule of Derivative Instruments	'
	A summary of FCX’s embedded commodity derivatives at September 30, 2014, follows:
		Open Positions			Average Price								Maturities Through
					Per Unit
					Contract				Market
	Embedded derivatives in provisional sales contracts:
	Copper (millions of pounds)	554			$	3.14			$	3.03			Feb-15
	Gold (thousands of ounces)	301			1,259				1,214				Jan-15
	Embedded derivatives in provisional purchase contracts:
	Copper (millions of pounds)	98			3.16				3.03				Jan-15
	At September 30, 2014, the outstanding crude oil option contracts, which settle monthly and cover approximately 10 million barrels in the fourth quarter of 2014 and approximately 31 million barrels in 2015, follow:
								Average Strike Price (per barrel)a
	Period		Instrument Type		Daily Volumes (thousand barrels)			Floor				Floor Limit				Average Deferred Premium		Index
																(per barrel)
	2014
	Oct - Dec		Put optionsb		75			$	90			$	70			$	5.74	Brent
	Oct - Dec		Put optionsb		30			95				75				6.09		Brent
	Oct - Dec		Put optionsb		5			100				80				7.11		Brent
	2015
	Jan - Dec		Put optionsb		84			90				70				6.89		Brent
	a.	The average strike prices do not reflect any premiums to purchase the put options.
	b.	If the index price is less than the per barrel floor, FCX receives the difference between the per barrel floor and the index price up to a maximum of $20 per barrel less the option premium. If the index price is at or above the per barrel floor, FCX pays the option premium and no cash settlement is received.
Realized and unrealized gains (losses) for derivative financial instruments that do not qualify as hedge transactions	'
	A summary of the realized and unrealized gains (losses) recognized in income before income taxes and equity in affiliated companies’ net earnings for commodity contracts that do not qualify as hedge transactions, including embedded derivatives, follows (in millions):
		Three Months Ended								Nine Months Ended
		September 30,								September 30,
		2014				2013				2014				2013
	Embedded derivatives in provisional copper and gold
	sales contractsa	$	(99	)		$	141			$	(184	)		$	(147	)
	Crude oil options and swapsa	57				(173		)		(47		)		(227		)
	Natural gas swapsa	7				3				(9		)		22
	Copper forward contractsb	(4		)		—				1				3
	a.	Amounts recorded in revenues.
	b.	Amounts recorded in cost of sales as production and delivery costs.
Fair Values of Unsettled Derivative Financial Instruments	'
	A summary of the fair values of unsettled commodity derivative financial instruments follows (in millions):
			September 30,				December 31, 2013
			2014
	Commodity Derivative Assets:
	Derivatives designated as hedging instruments:
	Copper futures and swap contractsa		$	1			$	6
	Derivatives not designated as hedging instruments:
	Embedded derivatives in provisional copper and gold
	sales/purchase contracts		12				63
	Total derivative assets		$	13			$	69
	Commodity Derivative Liabilities:
	Derivatives designated as hedging instruments:
	Copper futures and swap contractsa		$	5			$	—
	Derivatives not designated as hedging instruments:
	Embedded derivatives in provisional copper and gold
	sales/purchase contracts		75				16
	Crude oil optionsb		182				309
	Natural gas swaps		—				4
	Copper forward contracts		4				1
	Total derivative liabilities		$	266			$	330
	a.	FCX paid $6 million to brokers at September 30, 2014, and $1 million at December 31, 2013, for margin requirements (recorded in other current assets).
	b.	Included $269 million at September 30, 2014, and $444 million at December 31, 2013, for deferred premiums and accrued interest.
	A summary of these unsettled commodity contracts that are offset in the balance sheet follows (in millions):
			Assets								Liabilities
			September 30, 2014				December 31, 2013				September 30, 2014				December 31, 2013
	Gross amounts recognized:
	Commodity contracts:
	Embedded derivatives on provisional
	sales/purchase contracts		$	12			$	63			$	75			$	16
	Crude oil and natural gas derivatives		—				—				182				313
	Copper derivatives		1				6				9				1
			13				69				266				330
	Less gross amounts of offset:
	Commodity contracts:
	Embedded derivatives on provisional
	sales/purchase contracts		—				10				—				10
	Crude oil and natural gas derivatives		—				—				—				—
	Copper derivatives		1				—				1				—
			1				10				1				10
	Net amounts presented in balance sheet:
	Commodity contracts:
	Embedded derivatives on provisional
	sales/purchase contracts		12				53				75				6
	Crude oil and natural gas derivatives		—				—				182				313
	Copper derivatives		—				6				8				1
			$	12			$	59			$	265			$	320
	Balance sheet classification:
	Trade accounts receivable		$	1			$	53			$	60			$	—
	Other current assets		—				6				—				—
	Accounts payable and accrued liabilities		11				—				169				205
	Other liabilities		—				—				36				115
			$	12			$	59			$	265			$	320

Fair_Value_Measurement_Unaudit1

Fair Value Measurement (Unaudited) (Tables)	9 Months Ended
	Sep. 30, 2014
Fair Value Measurement [Abstract]	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	'
	A summary of the changes in the fair value of FCX's Level 3 instruments follows (in millions):
		Crude Oil				Plains Offshore
		Options				Warrants
	Fair value at December 31, 2013	$	(309	)		$	(2	)
	Net realized losses	(21		)	a	—
	Net unrealized (losses) gains included in earnings related to assets and liabilities still held at the end of the period	(29		)	b	2			c
	Settlement payments	177				—
	Fair value at September 30, 2014	$	(182	)		$	—
	a.	Included net realized losses of $20 million recorded in revenues and $1 million of interest expense associated with the deferred premiums.
	b.	Included net unrealized losses of $28 million recorded in revenues and $1 million of interest expense associated with the deferred premiums.
	c.	Recorded in other income, net.
Carrying Amount and Fair Value of Other Financial Instruments	'
	A summary of the carrying amount and fair value of FCX’s financial instruments, other than cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities, and dividends payable (refer to Note 7), follows (in millions):
		At September 30, 2014
		Carrying				Fair Value
		Amount				Total				Level 1		Level 2		Level 3
	Assets
	Investment securities:a,b,c
	U.S. core fixed income fund	$	22			$	22			$	—	$	22	$	—
	Money market funds	20				20				20		—		—
	Equity securities	4				4				4		—		—
	Total	46				46				24		22		—
	Legally restricted funds:a,b,d
	U.S. core fixed income fund	50				50				—		50		—
	Government bonds and notes	35				35				—		35		—
	Government mortgage-backed securities	33				33				—		33		—
	Corporate bonds	26				26				—		26		—
	Asset-backed securities	16				16				—		16		—
	Money market funds	8				8				8		—		—
	Municipal bonds	1				1				—		1		—
	Total	169				169				8		161		—
	Derivatives:a,e
	Embedded derivatives in provisional sales/purchase
	contracts in a gross asset position	12				12				—		12		—
	Copper futures and swap contracts	1				1				1		—		—
	Total	13				13				1		12		—
	Total assets					$	228			$	33	$	195	$	—
	Liabilities
	Derivatives:a,e
	Embedded derivatives in provisional sales/purchase
	contracts in a gross liability position	$	75			$	75			$	—	$	75	$	—
	Crude oil options	182				182				—		—		182
	Copper futures and swap contracts	5				5				5		—		—
	Copper forward contracts	4				4				2		2		—
	Total	266				266				7		77		182
	Long-term debt, including current portionf	19,737				19,882				—		19,882		—
	Total liabilities					$	20,148			$	7	$	19,959	$	182
		At December 31, 2013
		Carrying				Fair Value
		Amount				Total				Level 1		Level 2		Level 3
	Assets
	Investment securities:a,b
	U.S. core fixed income fund	$	21			$	21			$	—	$	21	$	—
	Money market funds	18				18				18		—		—
	Equity securities	5				5				5		—		—
	Total	44				44				23		21		—
	Legally restricted funds:a,b,d
	U.S. core fixed income fund	48				48				—		48		—
	Government mortgage-backed securities	34				34				—		34		—
	Corporate bonds	28				28				—		28		—
	Government bonds and notes	28				28				—		28		—
	Money market funds	28				28				28		—		—
	Asset-backed securities	15				15				—		15		—
	Municipal bonds	1				1				—		1		—
	Total	182				182				28		154		—
	Derivatives:a,e
	Embedded derivatives in provisional sales/purchase
	contracts in a gross asset position	63				63				—		63		—
	Copper futures and swap contracts	6				6				5		1		—
	Total	69				69				5		64		—
	Total assets					$	295			$	56	$	239	$	—
	Liabilities
	Derivatives:a
	Embedded derivatives in provisional sales/purchase
	contracts in a gross liability positione	$	16			$	16			$	—	$	16	$	—
Crude oil optionse	309				309				—		—		309
Natural gas swapse	4				4				—		4		—
Copper forward contractse	1				1				1		—		—
Plains Offshore warrantsg	2				2				—		—		2
Total	332				332				1		20		311
Long-term debt, including current portionf	20,706				20,487				—		20,487		—
Total liabilities					$	20,819			$	1	$	20,507	$	311
a.	Recorded at fair value.
b.	Current portion included in other current assets and long-term portion included in other assets.
c.	Excluded $115 million of time deposits (which approximated fair value) at September 30, 2014 (included in other assets), associated with an assurance bond to support PTFI's commitment for smelter development in Indonesia (refer to Note 9 for further discussion).
d.	Excluded time deposits (which approximated fair value) of $9 million at September 30, 2014 (included in other current assets), associated with a customs audit assessment at PT-FI, and $15 million included in other current assets and $210 million in other assets at December 31, 2013, associated with the Cerro Verde royalty dispute.
e.	Refer to Note 7 for further discussion and balance sheet classifications. Crude oil options are net of $269 million at September 30, 2014, and $444 million at December 31, 2013, for deferred premiums and accrued interest.
f.	Recorded at cost except for debt assumed in acquisitions, which were recorded at fair value at the respective acquisition dates.
g.	Included in other liabilities.

Business_Segments_Unaudited_Ta

Business Segments (Unaudited) (Tables)	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Schedule of Segment Reporting Information By Segment	'
	Business Segments
	(In millions)	Mining Operations
		North America Copper Mines								South America								Indonesia			Africa
																											Atlantic			Other											Corporate,
																							Molyb-				Copper			Mining							U.S.				Other
				Other						Cerro		Candel-		Other									denum		Rod &		Smelting			& Elimi-				Total			Oil & Gas				& Elimi-				FCX
		Morenci		Mines			Total			Verde		aria		Mines		Total		Grasberg			Tenke		Mines		Refining		& Refining			nations				Mining			Operations				nations				Total
	Three Months Ended September 30, 2014
	Revenues:
	Unaffiliated customers	$	140	$	79		$	219		$	295	$	141	$	300	$	736	$	1,086	a	$	379	$	—	$	1,219	$	597		$	470		b	$	4,706		$	990		c	$	—			$	5,696
	Intersegment	428		843			1,271			63		48		—		111		167			49		173		8		4			(1,783		)		—			—				—				—
	Production and delivery	341		561			902			178		142		151		471		700			206		86		1,220		578			(1,283		)		2,880			273				(1		)		3,152
	Depreciation, depletion and amortization	51		82			133			41		14		47		102		92			58		25		2		11			15				438			504				3				945
	Impairment of oil and gas properties	—		—			—			—		—		—		—		—			—		—		—		—			—				—			308				—				308
	Selling, general and administrative expenses	—		1			1			—		—		1		1		27			3		—		—		4			7				43			55				60				158
	Mining exploration and research expenses	—		2			2			—		—		—		—		—			—		—		—		—			27				29			—				—				29
	Environmental obligations and shutdown costs	—		(5		)	(5		)	—		—		—		—		—			—		—		—		—			23				18			—				—				18
	Net gain on sales of assets	—		(14		)	(14		)	—		—		—		—		—			—		—		—		—			(32		)		(46		)	—				—				(46		)
	Operating income (loss)	176		295			471			139		33		101		273		434			161		62		5		8			(70		)		1,344			(150		)		(62		)		1,132
	Interest expense, net	1		—			1			1		—		—		1		—			—		—		—		3			19				24			51				83				158
	Provision for (benefit from) income taxes	—		—			—			47		4		91		142		181			36		—		—		—			—				359			—				(10		)		349
	Total assets at September 30, 2014	3,689		5,742			9,431			7,030		1,511		2,210		10,751		8,537			5,010		2,089		282		948			1,025				38,073			25,328				575				63,976
	Capital expenditures	158		30			188			416		7		16		439		243			40		12		1		3			11				937			908				8				1,853
	Three Months Ended September 30, 2013
	Revenues:
	Unaffiliated customers	$	100	$	145		$	245		$	434	$	318	$	300	$	1,052	$	1,108	a	$	406	$	—	$	1,247	$	514		$	417		b	$	4,989		$	1,176		c	$	—			$	6,165
	Intersegment	375		681			1,056			27		60		—		87		3			14		121		6		2			(1,289		)		—			—				—				—
	Production and delivery	287		520			807			175		163		156		494		617			190		82		1,245		523			(916		)		3,042			288				2				3,332
	Depreciation, depletion and amortization	35		67			102			35		19		31		85		60			64		21		2		10			9				353			563				3				919
	Selling, general and administrative expenses	—		1			1			—		1		1		2		29			3		—		—		5			5				45			51				62				158
	Mining exploration and research expenses	—		2			2			—		—		—		—		1			—		—		—		—			52				55			—				2				57
	Environmental obligations and shutdown costs	—		5			5			—		—		—		—		—			—		—		—		—			(13		)		(8		)	—				—				(8		)
	Operating income (loss)	153		231			384			251		195		112		558		404			163		18		6		(22		)	(9		)		1,502			274				(69		)		1,707
	Interest expense, net	—		—			—			—		—		—		—		—			—		—		—		4			20				24			74				64				162
	Provision for income taxes	—		—			—			92		67		35		194		173			33		—		—		—			—				400			—				99				499
	Total assets at September 30, 2013	2,915		5,734			8,649			6,440		1,612		2,478		10,530		7,399			4,862		2,094		308		691			1,267				35,800			26,347				451				62,598
	Capital expenditures	172		80			252			224		23		17		264		209			52		46		1		20			51				895			738				12				1,645
	a.	Included PT-FI’s sales to PT Smelting totaling $628 million in third-quarter 2014 and $458 million in third-quarter 2013.
	b.	Included revenues from FCX's molybdenum sales company, which included sales of molybdenum produced by the Molybdenum mines and by certain of the North and South America copper mines.
	c.	Included net mark-to-market gains (losses) associated with crude oil and natural gas derivative contracts totaling $64 million in third-quarter 2014 and $(170) million in third-quarter 2013.
	(In millions)	Mining Operations
		North America Copper Mines								South America								Indonesia			Africa
																											Atlantic			Other											Corporate,
																							Molyb-				Copper			Mining							U.S.				Other
				Other						Cerro		Candel-		Other									denum		Rod &		Smelting			& Elimi-				Total			Oil & Gas				& Elimi-				FCX
		Morenci		Mines			Total			Verde		aria		Mines		Total		Grasberg			Tenke		Mines		Refining		& Refining			nations				Mining			Operations				nations				Total
	Nine Months Ended September 30, 2014
	Revenues:
	Unaffiliated customers	$	215	$	195		$	410		$	996	$	482	$	905	$	2,383	$	2,071	a	$	1,071	$	—	$	3,599	$	1,808		$	1,374		b	$	12,716		$	3,487		c	$	—			$	16,203
	Intersegment	1,346		2,489			3,835			150		238		5		393		175			102		469		24		15			(5,013		)		—			—				—				—
	Production and delivery	936		1,622			2,558			538		456		483		1,477		1,594			556		243		3,601		1,784			(3,753		)		8,060			913				(2		)		8,971
	Depreciation, depletion and amortization	128		240			368			120		49		115		284		194			172		71		7		31			51				1,178			1,736				10				2,924
	Impairment of oil and gas properties	—		—			—			—		—		—		—		—			—		—		—		—			—				—			308				—				308
	Selling, general and administrative expenses	1		2			3			2		1		2		5		73			9		—		—		13			20				123			171				163				457
	Mining exploration and research expenses	—		6			6			—		—		—		—		—			—		—		—		—			87				93			—				—				93
	Environmental obligations and shutdown costs	—		(5		)	(5		)	—		—		—		—		—			—		—		—		—			105				100			—				—				100
	Net gain on sales of assets	—		(14		)	(14		)	—		—		—		—		—			—		—		—		—			(32		)		(46		)	—				—				(46		)
	Operating income (loss)	496		833			1,329			486		214		310		1,010		385			436		155		15		(5		)	(117		)		3,208			359				(171		)		3,396
	Interest expense, net	2		1			3			1		—		—		1		—			—		—		—		10			55				69			201				213				483
	Provision for income taxes	—		—			—			177		72		160		409		166			93		—		—		—			—				668			—				366				1,034
	Capital expenditures	691		124			815			1,207		29		42		1,278		722			100		45		3		9			38				3,010			2,392				13				5,415
	Nine Months Ended September 30, 2013
	Revenues:
Unaffiliated customers	$	218	$	266		$	484		$	1,035	$	709	$	922	$	2,666	$	2,443	a	$	1,199	$	—	$	3,842	$	1,730		$	1,157		b	$	13,521		$	1,512		c	$	3			$	15,036
Intersegment	1,255		2,256			3,511			222		216		—		438		190			24		408		20		12			(4,603		)		—			—				—				—
Production and delivery	885		1,574			2,459			535		504		446		1,485		1,743			560		240		3,835		1,726			(3,531		)		8,517			377				10				8,904
Depreciation, depletion and amortization	105		207			312			105		44		93		242		173			179		62		7		32			31				1,038			732				8				1,778
Selling, general and administrative expenses	1		3			4			2		2		1		5		82			9		—		—		14			23				137			65				255				457
Mining exploration and research expenses	—		3			3			—		—		—		—		1			—		—		—		—			161				165			—				8				173
Environmental obligations and shutdown costs	—		(1		)	(1		)	—		—		—		—		—			—		—		—		—			24				23			—				—				23
Operating income (loss)	482		736			1,218			615		375		382		1,372		634			475		106		20		(30		)	(154		)		3,641			338				(278		)		3,701
Interest expense, net	3		1			4			2		—		—		2		12			2		—		—		12			60				92			100				159				351
Provision for income taxes	—		—			—			215		131		126		472		289			99		—		—		—			—				860			—				107			d	967
Capital expenditures	529		266			795			596		91		47		734		720			155		128		3		39			91				2,665			928				30				3,623
a.	Included PT-FI’s sales to PT Smelting totaling $1.5 billion for the first nine months of 2014 and $1.2 billion for the first nine months of 2013.
b.	Included revenues from FCX's molybdenum sales company, which included sales of molybdenum produced by the Molybdenum mines and by certain of the North and South America copper mines.
c.	Included net mark-to-market losses associated with crude oil and natural gas derivative contracts totaling $56 million for the first nine months of 2014 and $205 million for the period from June 1, 2013 to September 30, 2013.
d.	Included $183 million of net benefits resulting from second-quarter 2013 oil and gas acquisitions.

Guarantor_Financial_Statements1

Guarantor Financial Statements (Unaudited) (Tables)	9 Months Ended
	Sep. 30, 2014
Guarantor Financial Statements [Abstract]	'
Condensed Consolidating Balance Sheets [Table Text Block]	'
	CONDENSED CONSOLIDATING BALANCE SHEET
	September 30, 2014
		FCX				FM O&G LLC				Non-guarantor								Consolidated
		Issuer				Guarantor				Subsidiaries				Eliminations				FCX
	ASSETS
	Current assets:
	Cash and cash equivalents	$	—			$	1			$	657			$	—			$	658
	Accounts receivable	348				1,814				2,187				(2,042		)		2,307
	Other current assets	104				73				5,889				—				6,066
	Total current assets	452				1,888				8,733				(2,042		)		9,031
	Property, plant, equipment and mining development costs, net	23				45				26,236				—				26,304
	Oil and gas properties, net - full cost method:
	Subject to amortization, less accumulated amortization	—				4,235				6,727				344				11,306
	Not subject to amortization	—				2,346				8,685				—				11,031
	Investments in consolidated subsidiaries	33,908				10,492				13,063				(57,463		)		—
	Goodwill	—				217				1,500				—				1,717
	Other assets	6,512				3,913				4,439				(10,277		)		4,587
	Total assets	$	40,895			$	23,136			$	69,383			$	(69,438	)		$	63,976
	LIABILITIES AND EQUITY
	Current liabilities	$	1,664			$	985			$	5,294			$	(1,600	)		$	6,343
	Long-term debt, less current portion	13,355				5,301				6,562				(7,243		)		17,975
	Deferred income taxes	4,233			a	—				3,326				—				7,559
	Environmental and asset retirement obligations, less current portion	—				302				3,352				—				3,654
	Other liabilities	52				3,403				1,751				(3,476		)		1,730
	Total liabilities	19,304				9,991				20,285				(12,319		)		37,261
	Redeemable noncontrolling interest	—				—				749				—				749
	Equity:
	Stockholders' equity	21,591				13,145				44,460				(57,605		)		21,591
	Noncontrolling interests	—				—				3,889				486				4,375
	Total equity	21,591				13,145				48,349				(57,119		)		25,966
	Total liabilities and equity	$	40,895			$	23,136			$	69,383			$	(69,438	)		$	63,976
	a.	All U.S. related deferred income taxes are recorded at the parent company.
	CONDENSED CONSOLIDATING BALANCE SHEET
	December 31, 2013
		FCX				FM O&G LLC				Non-guarantor								Consolidated
		Issuer				Guarantor				Subsidiaries				Eliminations				FCX
	ASSETS
	Current assets:
	Cash and cash equivalents	$	—			$	—			$	1,985			$	—			$	1,985
	Accounts receivable	855				659				2,258				(1,210		)		2,562
	Other current assets	114				38				5,273				—				5,425
	Total current assets	969				697				9,516				(1,210		)		9,972
	Property, plant, equipment and mining development costs, net	27				43				23,972				—				24,042
	Oil and gas properties, net - full cost method:
	Subject to amortization, less accumulated amortization	—				6,207				6,265				—				12,472
	Not subject to amortization	—				2,649				8,238				—				10,887
	Investments in consolidated subsidiaries	31,162				9,712				12,468				(53,342		)		—
	Goodwill	—				437				1,479				—				1,916
	Other assets	7,126				4,640				4,128				(11,710		)		4,184
	Total assets	$	39,284			$	24,385			$	66,066			$	(66,262	)		$	63,473
	LIABILITIES AND EQUITY
	Current liabilities	$	1,003			$	758			$	4,222			$	(1,210	)		$	4,773
	Long-term debt, less current portion	13,184				7,199				8,056				(8,045		)		20,394
	Deferred income taxes	4,137			a	—				3,273				—				7,410
	Environmental and asset retirement obligations, less current portion	—				301				2,958				—				3,259
	Other liabilities	26				3,436				1,893				(3,665		)		1,690
	Total liabilities	18,350				11,694				20,402				(12,920		)		37,526
	Redeemable noncontrolling interest	—				—				716				—				716
	Equity:
	Stockholders' equity	20,934				12,691				41,100				(53,791		)		20,934
	Noncontrolling interests	—				—				3,848				449				4,297
	Total equity	20,934				12,691				44,948				(53,342		)		25,231
	Total liabilities and equity	$	39,284			$	24,385			$	66,066			$	(66,262	)		$	63,473
a.	All U.S. related deferred income taxes are recorded at the parent company.
Condensed Consolidating Statements of Income [Table Text Block]	'
	CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME
	Three and Nine Months Ended September 30, 2014
	Three Months Ended September 30, 2014
		FCX				FM O&G LLC				Non-guarantor								Consolidated
		Issuer				Guarantor				Subsidiaries				Eliminations				FCX
	Revenues	$	—			$	370			$	5,326			$	—			$	5,696
	Total costs and expenses	12				916				3,966				(330		)		4,564
	Operating (loss) income	(12		)		(546		)		1,360				330				1,132
	Interest expense, net	(99		)		(38		)		(37		)		16				(158		)
	Net gain on early extinguishment of debt	—				58				—				—				58
	Other income (expense), net	15				—				24				(16		)		23
	Benefit from (provision for) income taxes	46				(104		)		(166		)		(125		)		(349		)
	Equity in affiliated companies' net earnings (losses)	602				381				(111		)		(874		)		(2		)
	Net income (loss)	552				(249		)		1,070				(669		)		704
	Net income and preferred dividends attributable to noncontrolling interests	—				—				(130		)		(22		)		(152		)
	Net income (loss) attributable to FCX common stockholders	$	552			$	(249	)		$	940			$	(691	)		$	552
	Other comprehensive income	—				—				7				—				7
	Total comprehensive income (loss)	$	552			$	(249	)		$	947			$	(691	)		$	559
	Nine Months Ended September 30, 2014
		FCX				FM O&G LLC				Non-guarantor								Consolidated
		Issuer				Guarantor				Subsidiaries				Eliminations				FCX
	Revenues	$	—			$	1,584			$	14,619			$	—			$	16,203
	Total costs and expenses	44				1,931				11,170				(338		)		12,807
	Operating (loss) income	(44		)		(347		)		3,449				338				3,396
	Interest expense, net	(268		)		(123		)		(146		)		54				(483		)
	Net (loss) gain on early extinguishment of debt	(1		)		64				—				—				63
	Other income (expense), net	52				1				49				(54		)		48
	Benefit from (provision for) income taxes	51				(121		)		(836		)		(128		)		(1,034		)
	Equity in affiliated companies' net earnings (losses)	1,754				637				228				(2,619		)		—
	Net income (loss)	1,544				111				2,744				(2,409		)		1,990
	Net income and preferred dividends attributable to noncontrolling interests	—				—				(421		)		(25		)		(446		)
	Net income (loss) attributable to FCX common stockholders	$	1,544			$	111			$	2,323			$	(2,434	)		$	1,544
	Other comprehensive income	—				—				11				—				11
	Total comprehensive income (loss)	$	1,544			$	111			$	2,334			$	(2,434	)		$	1,555
	CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME
	Three and Nine Months Ended September 30, 2013
	Three Months Ended September 30, 2013
		FCX				FM O&G LLC				Non-guarantor								Consolidated
		Issuer				Guarantor				Subsidiaries				Eliminations				FCX
	Revenues	$	—			$	512			$	5,653			$	—			$	6,165
	Total costs and expenses	11				452				3,995				—				4,458
	Operating (loss) income	(11		)		60				1,658				—				1,707
	Interest expense, net	(94		)		(51		)		(40		)		23				(162		)
	Other income (expense), net	24				—				2				(23		)		3
	Benefit from (provision for) income taxes	35				(5		)		(529		)		—				(499		)
	Equity in affiliated companies' net earnings (losses)	867				187				47				(1,102		)		(1		)
	Net income (loss)	821				191				1,138				(1,102		)		1,048
	Net income and preferred dividends attributable to noncontrolling interests	—				—				(202		)		(25		)		(227		)
	Net income (loss) attributable to FCX common stockholders	$	821			$	191			$	936			$	(1,127	)		$	821
	Other comprehensive income	—				—				11				—				11
	Total comprehensive income (loss)	$	821			$	191			$	947			$	(1,127	)		$	832
	Nine Months Ended September 30, 2013
		FCX				FM O&G LLC				Non-guarantor								Consolidated
		Issuer				Guarantor				Subsidiaries				Eliminations				FCX
	Revenues	$	—			$	674			$	14,362			$	—			$	15,036
	Total costs and expenses	106				587				10,642				—				11,335
	Operating (loss) income	(106		)		87				3,720				—				3,701
	Interest expense, net	(222		)		(63		)		(104		)		38				(351		)
	Loss on early extinguishment of debt	(45		)		—				—				—				(45		)
	Gain on investment in MMR	128				—				—				—				128
	Other income (expense), net	39				—				12				(38		)		13
	Benefit from (provision for) income taxes	61				(10		)		(1,018		)		—				(967		)
	Equity in affiliated companies' net earnings (losses)	2,096				207				1				(2,301		)		3
Net income (loss)	1,951				221				2,611				(2,301		)		2,482
Net income and preferred dividends attributable to noncontrolling interests	—				—				(494		)		(37		)		(531		)
Net income (loss) attributable to FCX common stockholders	$	1,951			$	221			$	2,117			$	(2,338	)		$	1,951
Other comprehensive income	—				—				22				—				22
Total comprehensive income (loss)	$	1,951			$	221			$	2,139			$	(2,338	)		$	1,973
Condensed Consolidating Statements of Cash Flows [Table Text Block]	'
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	Nine Months Ended September 30, 2014
		FCX				FM O&G LLC				Non-guarantor								Consolidated
		Issuer				Guarantor				Subsidiaries				Eliminations				FCX
	Cash flow from operating activities:
	Net income (loss)	$	1,544			$	111			$	2,744			$	(2,409	)		$	1,990
	Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
	Depreciation, depletion and amortization	3				673				2,269				(21		)		2,924
	Impairment of oil and gas properties	—				625				—				(317		)		308
	Net losses on crude oil and natural gas derivative contracts	—				56				—				—				56
	Net loss (gain) on early extinguishment of debt	1				(64		)		—				—				(63		)
	Equity in (earnings) losses of consolidated subsidiaries	(1,754		)		(637		)		4				2,387				—
	Other, net	87				(17		)		(73		)		—				(3		)
	(Increases) decreases in working capital and changes in other tax payments, excluding amounts from dispositions	(217		)		(1,166		)		684				—				(699		)
	Net cash (used in) provided by operating activities	(336		)		(419		)		5,628				(360		)		4,513
	Cash flow from investing activities:
	Capital expenditures	—				(1,771		)		(3,644		)		—				(5,415		)
	Acquisition of Deepwater GOM interests	—				—				(1,421		)		—				(1,421		)
	Intercompany loans	1,151				734				—				(1,885		)		—
	Investment in consolidated subsidiary	(959		)		(97		)		(696		)		1,752				—
	Net proceeds from sale of Eagle Ford shale assets	—				2,971				—				—				2,971
	Other, net	—				32				189				—				221
	Net cash provided by (used in) investing activities	192				1,869				(5,572		)		(133		)		(3,644		)
	Cash flow from financing activities:
	Proceeds from debt	2,806				—				540				—				3,346
	Repayments of debt	(1,686		)		(1,996		)		(514		)		—				(4,196		)
	Intercompany loans	—				213				(2,098		)		1,885				—
	Cash dividends and distributions paid, and contributions received	(979		)		336				691				(1,392		)		(1,344		)
	Other, net	3				(2		)		(3		)		—				(2		)
	Net cash provided by (used in) financing activities	144				(1,449		)		(1,384		)		493				(2,196		)
	Net increase (decrease) in cash and cash equivalents	—				1				(1,328		)		—				(1,327		)
	Cash and cash equivalents at beginning of period	—				—				1,985				—				1,985
	Cash and cash equivalents at end of period	$	—			$	1			$	657			$	—			$	658
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	Nine Months Ended September 30, 2013
		FCX				FM O&G LLC					Non-guarantor									Consolidated
		Issuer				Guarantor					Subsidiaries					Eliminations				FCX
	Cash flow from operating activities:
	Net income (loss)	$	1,951			$	221				$	2,611				$	(2,301	)		$	2,482
	Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
	Depreciation, depletion and amortization	3				341					1,434					—				1,778
	Net losses on crude oil and natural gas derivative contracts	—				205					—					—				205
	Net loss on early extinguishment of debt	45				—					—					—				45
	Gain on investment in MMR	(128		)		—					—					—				(128		)
	Equity in (earnings) losses of consolidated subsidiaries	(2,096		)		(207		)			2					2,301				—
	Other, net	8				(15		)			(143		)			—				(150		)
	Decreases (increases) in working capital and changes in other tax payments, excluding amounts from acquisitions	112				518					(1,119		)			—				(489		)
	Net cash (used in) provided by operating activities	(105		)		1,063					2,785					—				3,743
	Cash flow from investing activities:
	Capital expenditures	—				(621		)			(3,002		)			—				(3,623		)
	Acquisitions, net of cash acquired	(5,437		)		—					(4		)			—				(5,441		)
	Intercompany loans	793				—					(1,095		)	—		302				—
	Dividends from consolidated subsidiary	321				—			—		—					(321		)		—
	Other, net	14				32					(70		)			—				(24		)
	Net cash (used in) provided by investing activities	(4,309		)		(589		)			(4,171		)			(19		)		(9,088		)
	Cash flow from financing activities:
	Proceeds from debt	11,085				—					144					—				11,229
	Repayments of debt and redemption of MMR preferred stock	(4,501		)		(416		)			(126		)			—				(5,043		)
	Intercompany loans	—				(56		)			358					(302		)		—
	Cash dividends and distributions paid	(1,957		)		—					(478		)			321				(2,114		)
	Other, net	(213		)		—					—					—				(213		)
	Net cash provided by (used in) financing activities	4,414				(472		)			(102		)			19				3,859
	Net increase (decrease) in cash and cash equivalents	—				2					(1,488		)			—				(1,486		)
Cash and cash equivalents at beginning of period	—				—					3,705					—				3,705
Cash and cash equivalents at end of period	$	—			$	2				$	2,217				$	—			$	2,219

Subsequent_Events_Unaudited_Ta

Subsequent Events (Unaudited) (Tables)	9 Months Ended
	Sep. 30, 2014
Subsequent Events [Abstract]	'
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]	'
	The following table provides the major classes of assets and liabilities associated with Candelaria/Ojos at September 30, 2014 (in millions):
	Current assets	$	449
	Long-term assets	1,160
	Current liabilities	138
	Long-term liabilities	92
	The following table provides net income before income taxes and net income attributable to FCX associated with Candelaria/Ojos (in millions):
			Nine Months Ended
			September 30,
			2014		2013
	Net income before income taxes		$	236	$	391
	Net income attributable to FCX		132		199

General_Information_Unaudited_

General Information (Unaudited) (Details) (USD $)	3 Months Ended		9 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2013	Jun. 30, 2013
					Plains Exploration & Production Company [Member]	McMoRan Exploration Co [Member]
Business Acquisition [Line Items]	'	'	'	'	'	'
Entity Information, Date to Change Former Legal or Registered Name	'	'	14-Jul-14	'	'	'
Business Acquisition, Effective Date of Acquisition	'	'	'	'	31-May-13	3-Jun-13
Business Acquisition, Date Results Included in Combined Entity	'	'	'	'	1-Jun-13	4-Jun-13
Fair Value Inputs, Discount Rate	'	'	10.00%	'	'	'
Impairment of oil and gas properties	$308	$0	$308	$0	'	'

Acquisitions_Unaudited_Details

Acquisitions (Unaudited) (Details) (USD $)	3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended	6 Months Ended			3 Months Ended	6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2014	Sep. 30, 2013	Jun. 30, 2014	Jun. 30, 2014	Sep. 08, 2014	Jun. 20, 2014	Sep. 30, 2014	Jun. 30, 2014
				Plains Exploration & Production Company and McMoRan Exploration Co [Member]	Plains Exploration & Production Company and McMoRan Exploration Co [Member]	Eagle Ford [Member]	Eagle Ford [Member]	Eagle Ford [Member]	Eagle Ford [Member]	Deepwater Gulf of Mexico Interests [Member]	Deepwater Gulf of Mexico Interests [Member]
Business Acquisition [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Business Acquisition, Adjustment to Oil and Gas Properties	'	'	'	$20	'	'	'	'	'	'	'
Business Acquisition, Adjustment to Goodwill	'	'	'	22	'	'	221	'	'	'	'
Business Acquisition, Adjustment to Deferred Income Tax Assets	'	'	'	-42	'	'	'	'	'	'	'
Disposal Date	'	'	'	'	'	'	20-Jun-14	'	'	'	'
Business Combination, Consideration Transferred	'	'	'	'	'	'	3,100	'	'	496	919
Business Acquisition, Effective Date of Acquisition	'	'	'	'	'	'	1-Apr-14	'	'	8-Sep-14	30-Jun-14
Income Tax Expense (Benefit), Changes in Deferred Tax Liabilities and Deferred Tax Asset Valuation Allowances	-183	62	-183	'	-183	62	'	'	'	'	'
Escrow Deposit Disbursements Related to Property Acquisition	'	115	'	'	'	'	'	414	1,300	'	'
Business Combination, Adjustment to Recognized Identifiable Assets Acquired and Liabilities Assumed Oil and Gas Properties Subject to Depletion	'	'	'	'	'	'	'	'	'	509	460
Business Combination, Adjustment to Recognized Identifiable Assets Acquired and Liabilities Assumed Oil and Gas Properties Not Subject to Depletion	'	'	'	'	'	'	'	'	'	'	$476

Acquisitions_Unaudited_Pro_For

Acquisitions (Unaudited) Pro Forma Information (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Business Acquisition [Line Items]	'	'	'	'
Income Tax Expense (Benefit), Changes in Deferred Tax Liabilities and Deferred Tax Asset Valuation Allowances	'	($183,000,000)	$62,000,000	($183,000,000)
Gain on investment in MMR	0	0	0	128,000,000
Plains Exploration & Production Company and McMoRan Exploration Co [Member]	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'
Business Acquisition, Pro Forma Revenues	'	'	'	17,190,000,000
Business Acquisition, Pro Forma Operating Income	'	'	'	4,617,000,000
Business Acquisition, Pro Forma Income from Continuing Operations	'	'	'	2,683,000,000
Business Acquisition, Pro Forma Net Income	'	'	'	2,134,000,000
Business Acquisition, Pro Forma Earnings Per Share, Basic	'	'	'	$2.05
Business Acquisition, Pro Forma Earnings Per Share, Diluted	'	'	'	$2.04
Business Combination, Acquisition Related Costs, Including Acquiree Costs	'	'	'	519,000,000
Income Tax Expense (Benefit), Changes in Deferred Tax Liabilities and Deferred Tax Asset Valuation Allowances	'	'	'	-183,000,000
Gain on investment in MMR	'	'	'	128,000,000
Gain (Loss) on Sale of Oil and Gas Property, Excluded for Full Cost Accounting	'	'	'	$77,000,000

Earnings_Per_Share_Unaudited_D

Earnings Per Share (Unaudited) (Details) (USD $)	3 Months Ended			9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013
Earnings Per Share [Abstract]	'		'	'		'
Net income	$704		$1,048	$1,990		$2,482
Net income attributable to noncontrolling interests	-142		-218	-416		-519
Preferred dividends on redeemable noncontrolling interest	-10		-9	-30		-12
Undistributed earnings allocable to participating securities	-2		0	-4		0
Net income allocable to FCX common stockholders	$550		$821	$1,540		$1,951
Basic weighted-average shares of common stock outstanding	1,039		1,038	1,039		989
Add shares issuable upon exercise or vesting of dilutive stock options and RSUs	7	[1]	5	6	[1]	4
Diluted weighted-average shares of common stock outstanding	1,046		1,043	1,045		993
Basic net income per share attributable to FCX common stockholders	$0.53		$0.79	$1.48		$1.97
Diluted net income per share attributable to FCX common stockholders	$0.53		$0.79	$1.47		$1.96
Potential anti-dilutive additional shares of common stock (in shares)	5		'	3		'
Outstanding stock options with exercise prices greater than average market price of common stock	25		34	28		32
Weighted-average exercise price of outstanding stock options not in-the-money	$42.34		$40.11	$41.42		$40.63
[1]	Excluded shares of common stock associated with outstanding stock options with exercise prices less than the average market price of FCX's common stock that were anti-dilutive totaled approximately 5 million for third-quarter 2014 and 3 million for the nine months ended September 30, 2014.

Inventories_Including_LongTerm2

Inventories, Including Long-Term Mill and Leach Stockpiles (Unaudited) (Details) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
Components of Inventories [Line Items]	'		'
Raw materials (primarily concentrates)	$335		$238
Work-in-process	129	[1]	199	[1]
Finished goods	1,115	[2]	1,146	[2]
Total product inventories	1,579		1,583
Total mill and leach stockpiles	1,967		1,705
Total materials and supplies, net	1,943	[3]	1,730	[3]
Total long-term mill and leach stockpiles	2,569		2,386
Inventory obsolescence reserves	22		24
Current [Member]	'		'
Components of Inventories [Line Items]	'		'
Mill stockpiles	126		91
Leach stockpiles	1,841		1,614
Total mill and leach stockpiles	1,967		1,705
Long-Term [Member]	'		'
Components of Inventories [Line Items]	'		'
Mill stockpiles	787		698
Leach stockpiles	1,782		1,688
Total long-term mill and leach stockpiles	$2,569	[4]	$2,386	[4]
[1]	FCX's mining operations also have work-in-process inventories that are reflected as mill and leach stockpiles.
[2]	Primarily included molybdenum concentrates; copper concentrates, anodes, cathodes and rod; and various cobalt products.
[3]	Materials and supplies inventory was net of obsolescence reserves totaling $22 million at September 30, 2014, and $24 million at December 31, 2013.
[4]	Estimated metals in stockpiles not expected to be recovered within the next 12 months.

Income_Taxes_Unaudited_Details

Income Taxes (Unaudited) (Details) (USD $)	3 Months Ended				9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Income Tax Disclosure [Abstract]	'		'		'		'
U.S. operations	$38		$104	[1]	$323	[2]	$85	[1]
International operations	311	[3]	395		711	[3]	882
Total	349		499		1,034		967
Income Tax Expense (Benefit), Changes in Deferred Tax Liabilities and Deferred Tax Asset Valuation Allowances	'		-183		62		-183
Change in Deferred Tax Assets Valuation Allowance, Amount	'		-190		'		-190
Deferred Other Tax Expense (Benefit)	'		-69		'		-69
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	$54		$76		$54		$76
Consolidated effective income tax rate (percent)	'		'		34.00%		33.00%
[1]	As a result of second-quarter 2013 oil and gas acquisitions, FCX recognized a net tax benefit of $183 million, consisting of income tax benefits of $190 million associated with net reductions in FCX's valuation allowances and $69 million related to the release of the deferred tax liability on PXP's investment in MMR common stock; partially offset by income tax expense of $76 million associated with the write off of deferred tax assets related to environmental liabilities.
[2]	Included a $62 million charge for deferred taxes recorded in connection with the allocation of goodwill to the sale of the Eagle Ford shale assets.
[3]	Included a $54 million charge related to changes in Chilean tax rules.

Debt_and_Equity_Transactions_U1

Debt and Equity Transactions (Unaudited) (Details) (USD $)

3 Months Ended

9 Months Ended

6 Months Ended

3 Months Ended

1 Months Ended

3 Months Ended

3 Months Ended

3 Months Ended

3 Months Ended

3 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Mar. 07, 2013

Jun. 30, 2014

Mar. 31, 2014

Mar. 31, 2013

31-May-13

Sep. 30, 2014

Jul. 23, 2014

Sep. 30, 2014

Jul. 23, 2014

Sep. 30, 2014

Jul. 23, 2014

Sep. 30, 2014

Jul. 23, 2014

Sep. 30, 2014

Jul. 23, 2014

Jun. 30, 2014

Mar. 31, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2014

Oct. 15, 2014

Senior Notes [Member]

Credit Facility [Domain]

Credit Facility [Domain]

Bridge Loan [Member]

Plains Exploration & Production Company [Member]

Plains Exploration & Production Company [Member]

Plains Exploration & Production Company [Member]

Plains Exploration & Production Company [Member]

Plains Exploration & Production Company [Member]

Plains Exploration & Production Company [Member]

Plains Exploration & Production Company [Member]

Plains Exploration & Production Company [Member]

Plains Exploration & Production Company [Member]

Plains Exploration & Production Company [Member]

Plains Exploration & Production Company [Member]

Plains Exploration & Production Company [Member]

Plains Exploration & Production Company [Member]

Cerro Verde [Member]

Cerro Verde [Member]

Cerro Verde [Member]

Cerro Verde [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Credit Facility [Domain]

Tranche 1 [Member]

Tranche 2 [Member]

Tranche 3 [Member]

Plains Exploration & Production Company [Member]

Plains Exploration & Production Company [Member]

6.125% Senior Notes due 2019 [Member]

6.125% Senior Notes due 2019 [Member]

6.5% Senior Notes due 2020 [Member]

6.5% Senior Notes due 2020 [Member]

6.75% Senior Notes due 2022 [Member]

6.75% Senior Notes due 2022 [Member]

6.875% Senior Notes due 2023 [Member]

6.875% Senior Notes due 2023 [Member]

6.625% Senior Notes due 2021 [Member]

6.625% Senior Notes due 2021 [Member]

Credit Facility [Domain]

Credit Facility [Domain]

Credit Facility [Domain]

Senior Notes [Member]

Senior Notes [Member]

8.625% Senior Notes due 2019 [Member]

8.625% Senior Notes due 2019 [Member]

Extinguishment of Debt [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Extinguishment of Debt, Amount

'

'

'

'

'

'

'

'

'

$1,700,000,000

'

$263,000,000

'

$525,000,000

'

$350,000,000

'

$525,000,000

'

$210,000,000

'

'

'

'

'

$400,000,000

'

Debt Instrument, Repurchase Date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15-Oct-14

'

Debt Instrument, Interest Rate, Stated Percentage

'

'

'

'

'

'

'

'

'

'

'

'

6.13%

'

6.50%

'

6.75%

'

6.88%

'

6.63%

'

'

'

'

'

8.63%

Long-term Debt, Gross

'

'

'

'

'

'

'

'

'

'

1,800,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

441,000,000

Liabilities, Fair Value Adjustment

'

'

'

'

'

'

'

'

'

167,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

41,000,000

'

Gains (Losses) on Extinguishment of Debt

58,000,000

0

63,000,000

-45,000,000

'

'

'

-45,000,000

'

58,000,000

'

'

'

'

'

'

'

'

'

6,000,000

'

'

'

'

'

24,000,000

'

Line of Credit Facility, Maximum Borrowing Capacity

'

'

'

'

'

4,000,000,000

3,000,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,800,000,000

'

'

'

'

'

Amount of revolving credit facility available to subsidiary

'

'

'

'

'

'

500,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Expiration Date

'

'

'

'

'

31-May-19

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10-Mar-19

30-Sep-17

31-Mar-18

30-Sep-18

'

'

Line of Credit Facility, Amount Outstanding

'

'

'

'

'

1,100,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

'

'

'

'

Letters of Credit Outstanding, Amount

'

'

'

'

'

45,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

'

'

'

'

Line of Credit Facility, Remaining Borrowing Capacity

'

'

'

'

'

2,900,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line Of Credit Facility Remaining Borrowing Capacity Available For Letters Of Credit

'

'

'

'

'

1,500,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

500,000,000

'

'

'

'

'

Business Acquisition, Effective Date of Acquisition

'

'

'

'

'

'

'

'

31-May-13

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Term of Debt Agreement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

Debt Instrument, Description of Variable Rate Basis

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'LIBOR

'

'

'

'

'

Debt Instrument, Basis Spread on Variable Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.90%

'

'

'

'

'

Term When Funds Are Available to be Drawn on Debt Agreement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2 years

'

'

'

'

'

Line of Credit Facility, Current Borrowing Capacity, Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

85.00%

70.00%

35.00%

'

'

Debt Instrument, Face Amount

'

'

'

'

$6,500,000,000

'

'

$9,500,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt_and_Equity_Transactions_U2

Debt and Equity Transactions (Unaudited) Interest, Dividends and Maturities (Details) (USD $)	3 Months Ended			9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Capitalized Interest [Line Items]	'	'	'	'	'
Interest costs incurred	$212	$223	'	$661	$465
Dividends Payable, Date Declared	24-Sep-14	'	'	'	'
Authorized Quarterly Rate Of Common Stock Dividend	$0.31	'	'	'	'
Dividends Payable, Date to be Paid	3-Nov-14	'	'	'	'
Dividends Payable, Date of Record	15-Oct-14	'	'	'	'
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	'	'	91	'	'
Property, Plant, Equipment and Mining Development Costs, Net [Member]	'	'	'	'	'
Capitalized Interest [Line Items]	'	'	'	'	'
Interest costs capitalized	34	26	'	113	68
Oil and Gas Properties Not Subject to Amortization [Member]	'	'	'	'	'
Capitalized Interest [Line Items]	'	'	'	'	'
Interest costs capitalized	$20	$35	'	$65	$46

Financial_Instruments_Unaudite2

Financial Instruments (Unaudited) (Details) (Commodity Contract [Member], USD $)	3 Months Ended				9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Fair Value Hedging [Member] | Sales [Member]	'		'		'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'		'		'
Derivative financial instruments	($10)		$16		($10)		($2)
Hedged item – firm sales commitments	10		-16		10		2
Matured derivative financial instruments	1		-3		-3		-17
Derivatives not designated as hedging instruments [Member] | Embedded derivatives in provisional sales contracts [Member] | Sales [Member]	'		'		'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'		'		'
Realized and unrealized gains (losses)	-99	[1]	141	[1]	-184	[1]	-147	[1]
Derivatives not designated as hedging instruments [Member] | Copper forward contracts [Member] | Amounts recorded in Cost of Sales [Member]	'		'		'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'		'		'
Realized and unrealized gains (losses)	-4	[2]	0	[2]	1	[2]	3	[2]
Derivatives not designated as hedging instruments [Member] | Plains Exploration & Production Company [Member] | Crude Oil Options [Member] | Sales [Member]	'		'		'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'		'		'
Realized and unrealized gains (losses)	57	[1]	-173	[1]	-47	[1]	-227	[1]
Derivatives not designated as hedging instruments [Member] | Plains Exploration & Production Company [Member] | Natural gas swaps [Member] | Sales [Member]	'		'		'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'		'		'
Realized and unrealized gains (losses)	$7	[1]	$3	[1]	($9)	[1]	$22	[1]
[1]	Amounts recorded in revenues.
[2]	Amounts recorded in cost of sales as production and delivery costs.

Financial_Instruments_Unaudite3

Financial Instruments (Unaudited) Not Designated as Hedging Instruments (Details)	9 Months Ended
	Sep. 30, 2014
	lb
Embedded derivatives in provisional sales contracts - Copper [Member] | Derivatives not designated as hedging instruments [Member]	'
Derivative [Line Items]	'
Open positions (in lbs except gold in oz)	554,000,000
Average contract price	3.14
Average market price	3.03
Maturities through	'February 2015
Embedded derivatives in provisional sales contracts - Gold [Member] | Derivatives not designated as hedging instruments [Member]	'
Derivative [Line Items]	'
Open positions (in lbs except gold in oz)	301,000
Average contract price	1,259
Average market price	1,214
Maturities through	'January 2015
Embedded derivatives in provisional purchase contracts - Copper [Member] | Derivatives not designated as hedging instruments [Member]	'
Derivative [Line Items]	'
Open positions (in lbs except gold in oz)	98,000,000
Average contract price	3.16
Average market price	3.03
Maturities through	'January 2015
Atlantic Copper [Member] | Copper forward contracts [Member] | Derivatives not designated as hedging instruments [Member]	'
Derivative [Line Items]	'
Open positions (in lbs except gold in oz)	46,000,000
Average contract price	3.12
Maturities through	'November 2014
Copper futures and swap contracts [Member] | Fair Value Hedging [Member] | Derivatives designated as hedging instruments [Member]	'
Derivative [Line Items]	'
Open positions (in lbs except gold in oz)	54,000,000
Average contract price	3.09
Maturities through	'December 2015

Financial_Instruments_Unaudite4

Financial Instruments (Unaudited) Oil and Gas (Details) (USD $)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

In Millions, unless otherwise specified

Derivatives not designated as hedging instruments [Member]

2014 Positions [Member]

2014 Positions [Member]

2014 Positions [Member]

2014 Positions [Member]

2014 Positions [Member]

2015 Positions [Member]

2015 Positions [Member]

Deferred Option Premiums and Accrued Interest [Member]

Deferred Option Premiums and Accrued Interest [Member]

Weighted Average [Member]

Weighted Average [Member]

Weighted Average [Member]

Weighted Average [Member]

Weighted Average [Member]

Natural gas swaps [Member]

Derivatives not designated as hedging instruments [Member]

Derivatives not designated as hedging instruments [Member]

Derivatives not designated as hedging instruments [Member]

Derivatives not designated as hedging instruments [Member]

Derivatives not designated as hedging instruments [Member]

Derivatives not designated as hedging instruments [Member]

Derivatives not designated as hedging instruments [Member]

Crude Oil Options [Member]

2014 Positions [Member]

2014 Positions [Member]

2014 Positions [Member]

2015 Positions [Member]

MMBTU

Crude Oil Options [Member]

Crude Oil Options [Member]

Crude Oil Options [Member]

Crude Oil Options [Member]

Natural gas swaps [Member]

Crude Oil Options [Member]

Crude Oil Options [Member]

Derivatives not designated as hedging instruments [Member]

Derivatives not designated as hedging instruments [Member]

Derivatives not designated as hedging instruments [Member]

Derivatives not designated as hedging instruments [Member]

MMBTU

5 MBbls [Member]

30 MBbls [Member]

75 MBbls [Member]

MMBTU

MMBTU

84 MBbls [Member]

Crude Oil Options [Member]

Crude Oil Options [Member]

Crude Oil Options [Member]

Crude Oil Options [Member]

Put Option [Member]

Put Option [Member]

Put Option [Member]

Put Option [Member]

5 MBbls [Member]

30 MBbls [Member]

75 MBbls [Member]

84 MBbls [Member]

MBbls

MBbls

MBbls

MBbls

Put Option [Member]

Put Option [Member]

Put Option [Member]

Put Option [Member]

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Liability

$265

$320

'

'

'

'

'

'

'

'

$269

$444

'

'

'

'

'

Daily Volumes (Bbls)

'

'

9,000,000

10,000,000

75

[1]

30

[1]

5

[1]

100,000

31,000,000

84

[1]

'

'

'

'

'

'

'

Derivative, Average Floor Price

'

'

'

'

90

[1],[2]

95

[1],[2]

100

[1],[2]

'

'

90

[1],[2]

'

'

'

'

'

'

'

Derivative, Average Floor Price Limit

'

'

'

'

70

[1],[2]

75

[1],[2]

80

[1],[2]

'

'

70

[1],[2]

'

'

'

'

'

'

'

Deferred Premium Price

'

'

'

'

'

'

'

'

'

'

'

'

6.64

5.74

[1]

6.09

[1]

7.11

[1]

6.89

[1]

Derivative, Underlying Basis

'

'

'

'

'Brent

[1]

'Brent

[1]

'Brent

[1]

'

'

'Brent

[1]

'

'

'

'

'

'

'

Derivative Latest Maturity Period

'

'

'

'

'

'

'

'December 2014

'

'

'

'

'

'

'

'

'

Maximum Price Limit per Barrel

20

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative, Swap Type, Fixed Price

'

'

'

'

'

'

'

4.09

'

'

'

'

'

'

'

'

'

[1]

If the index price is less than the per barrel floor, FCX receives the difference between the per barrel floor and the index price up to a maximum of $20 per barrel less the option premium. If the index price is at or above the per barrel floor, FCX pays the option premium and no cash settlement is received.

[2]

The average strike prices do not reflect any premiums to purchase the put options.

Financial_Instruments_Unaudite5

Financial Instruments (Unaudited) Unsettled Derivatives (Details) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
Derivatives, Fair Value [Line Items]	'		'
Paid to brokers associated with margin requirements	$6		$1
Derivative Asset	12		59
Derivative Liability	265		320
Trade Accounts Receivable [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Derivative Asset	1		53
Derivative Liability	60		0
Other Current Assets [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Derivative Asset	0		6
Derivative Liability	0		0
Accounts Payable and Accrued Liabilities [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Derivative Asset	11		0
Derivative Liability	169		205
Other Liabilities [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Derivative Asset	0		0
Derivative Liability	36		115
Commodity Contract [Member] | Derivatives not designated as hedging instruments	'		'
Derivatives, Fair Value [Line Items]	'		'
Asset position	13		69
Liability position	266		330
Derivative Asset, Fair Value, Gross Liability	1		10
Derivative Liability, Fair Value, Gross Asset	1		10
Derivative Asset	12		59
Derivative Liability	265		320
Commodity Contract [Member] | Copper Derivatives [Member] | Derivatives not designated as hedging instruments	'		'
Derivatives, Fair Value [Line Items]	'		'
Asset position	1		6
Liability position	9		1
Derivative Asset, Fair Value, Gross Liability	1		0
Derivative Liability, Fair Value, Gross Asset	1		0
Derivative Asset	0		6
Derivative Liability	8		1
Commodity Contract [Member] | Copper futures and swap contracts [Member] | Derivatives not designated as hedging instruments	'		'
Derivatives, Fair Value [Line Items]	'		'
Asset position	1	[1]	6	[1]
Liability position	5	[1]	0	[1]
Commodity Contract [Member] | Copper forward contracts [Member] | Derivatives not designated as hedging instruments	'		'
Derivatives, Fair Value [Line Items]	'		'
Liability position	4		1
Commodity Contract [Member] | Embedded derivatives in provisional sales/purchases contracts [Member] | Derivatives not designated as hedging instruments	'		'
Derivatives, Fair Value [Line Items]	'		'
Asset position	12		63
Liability position	75		16
Derivative Asset, Fair Value, Gross Liability	0		10
Derivative Liability, Fair Value, Gross Asset	0		10
Derivative Asset	12		53
Derivative Liability	75		6
Commodity Contract [Member] | Natural gas swaps [Member] | Derivatives not designated as hedging instruments	'		'
Derivatives, Fair Value [Line Items]	'		'
Liability position	0		4
Commodity Contract [Member] | Crude Oil and Natural Gas Derivatives [Member] | Derivatives not designated as hedging instruments	'		'
Derivatives, Fair Value [Line Items]	'		'
Asset position	0		0
Liability position	182		313
Derivative Asset, Fair Value, Gross Liability	0		0
Derivative Liability, Fair Value, Gross Asset	0		0
Derivative Asset	0		0
Derivative Liability	182		313
Crude Oil Options [Member] | Embedded derivatives in provisional sales/purchases contracts [Member] | Derivatives not designated as hedging instruments	'		'
Derivatives, Fair Value [Line Items]	'		'
Liability position	182	[2]	309	[2]
Deferred Option Premiums and Accrued Interest [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Derivative Liability	$269		$444
[1]	FCX paid $6 million to brokers at September 30, 2014, and $1 million at December 31, 2013, for margin requirements (recorded in other current assets).
[2]	Included $269 million at September 30, 2014, and $444 million at December 31, 2013, for deferred premiums and accrued interest.

Financial_Instruments_Unaudite6

Financial Instruments (Unaudited) Other Financial Instruments (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014
In Millions, unless otherwise specified					Time Deposits [Member]	Time Deposits [Member]	Plains Offshore Operations Inc. [Member]
Cash and Cash Equivalents [Line Items]	'	'	'	'	'	'	'
Credit Derivative, Maximum Exposure, Undiscounted	$12	'	'	'	'	'	'
Cash and cash equivalents	$658	$1,985	$2,219	$3,705	$72	$211	'
Preferred Stock, Dividend Rate, Percentage	'	'	'	'	'	'	8.00%

Fair_Value_Measurement_Unaudit2

Fair Value Measurement (Unaudited) (Details) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
Derivatives:	'		'
Derivative assets	$12		$59
Derivatives:	'		'
Derivative liabilities	265		320
Escrow Deposit Disbursements Related to Property Acquisition	115		'
Fair Value, Measurements, Recurring [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	46	[1],[2],[3]	44	[1],[2]
Legally restricted funds (long-term):	'		'
Legally restricted funds	169	[1],[2],[4]	182	[1],[2],[4]
Derivatives:	'		'
Derivative assets	13	[2],[5]	69	[2],[5]
Derivatives:	'		'
Derivative liabilities	266	[2],[5]	332	[2]
Long-term debt, including current portion	19,737	[6]	20,706	[6]
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	46	[1],[2],[3]	44	[1],[2]
Legally restricted funds (long-term):	'		'
Legally restricted funds	169	[1],[2],[4]	182	[1],[2],[4]
Derivatives:	'		'
Derivative assets	13	[2],[5]	69	[2],[5]
Total assets	228		295
Derivatives:	'		'
Derivative liabilities	266	[2],[5]	332	[2]
Long-term debt, including current portion	19,882	[6]	20,487	[6]
Total liabilities	20,148		20,819
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	24	[1],[2],[3]	23	[1],[2]
Legally restricted funds (long-term):	'		'
Legally restricted funds	8	[1],[2],[4]	28	[1],[2],[4]
Derivatives:	'		'
Derivative assets	1	[2],[5]	5	[2],[5]
Total assets	33		56
Derivatives:	'		'
Derivative liabilities	7	[2],[5]	1	[2]
Long-term debt, including current portion	0	[6]	0	[6]
Total liabilities	7		1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	22	[1],[2],[3]	21	[1],[2]
Legally restricted funds (long-term):	'		'
Legally restricted funds	161	[1],[2],[4]	154	[1],[2],[4]
Derivatives:	'		'
Derivative assets	12	[2],[5]	64	[2],[5]
Total assets	195		239
Derivatives:	'		'
Derivative liabilities	77	[2],[5]	20	[2]
Long-term debt, including current portion	19,882	[6]	20,487	[6]
Total liabilities	19,959		20,507
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	0	[1],[2],[3]	0	[1],[2]
Legally restricted funds (long-term):	'		'
Legally restricted funds	0	[1],[2],[4]	0	[1],[2],[4]
Derivatives:	'		'
Derivative assets	0	[2],[5]	0	[2],[5]
Total assets	0		0
Derivatives:	'		'
Derivative liabilities	182	[2],[5]	311	[2]
Long-term debt, including current portion	0	[6]	0	[6]
Total liabilities	182		311
Fair Value, Measurements, Recurring [Member] | Embedded derivatives in provisional sales/purchases contracts [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Derivatives:	'		'
Derivative liabilities	75	[2],[5]	16	[2],[5]
Fair Value, Measurements, Recurring [Member] | Embedded derivatives in provisional sales/purchases contracts [Member] | Estimate of Fair Value Measurement [Member]	'		'
Derivatives:	'		'
Derivative liabilities	75	[2],[5]	16	[2],[5]
Fair Value, Measurements, Recurring [Member] | Embedded derivatives in provisional sales/purchases contracts [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	0	[2],[5]	0	[2],[5]
Fair Value, Measurements, Recurring [Member] | Embedded derivatives in provisional sales/purchases contracts [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	75	[2],[5]	16	[2],[5]
Fair Value, Measurements, Recurring [Member] | Embedded derivatives in provisional sales/purchases contracts [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	0	[2],[5]	0	[2],[5]
Fair Value, Measurements, Recurring [Member] | Crude Oil Options [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Derivatives:	'		'
Derivative liabilities	182	[2],[5]	309	[2],[5]
Fair Value, Measurements, Recurring [Member] | Crude Oil Options [Member] | Estimate of Fair Value Measurement [Member]	'		'
Derivatives:	'		'
Derivative liabilities	182	[2],[5]	309	[2],[5]
Fair Value, Measurements, Recurring [Member] | Crude Oil Options [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	0	[2],[5]	0	[2],[5]
Fair Value, Measurements, Recurring [Member] | Crude Oil Options [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	0	[2],[5]	0	[2],[5]
Fair Value, Measurements, Recurring [Member] | Crude Oil Options [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	182	[2],[5]	309	[2],[5]
Fair Value, Measurements, Recurring [Member] | Natural gas swaps [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Derivatives:	'		'
Derivative liabilities	'		4	[2],[5]
Fair Value, Measurements, Recurring [Member] | Natural gas swaps [Member] | Estimate of Fair Value Measurement [Member]	'		'
Derivatives:	'		'
Derivative liabilities	'		4	[2],[5]
Fair Value, Measurements, Recurring [Member] | Natural gas swaps [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	'		0	[2],[5]
Fair Value, Measurements, Recurring [Member] | Natural gas swaps [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	'		4	[2],[5]
Fair Value, Measurements, Recurring [Member] | Natural gas swaps [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	'		0	[2],[5]
Fair Value, Measurements, Recurring [Member] | Copper futures and swap contracts [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Derivatives:	'		'
Derivative liabilities	5	[2],[5]	'
Fair Value, Measurements, Recurring [Member] | Copper futures and swap contracts [Member] | Estimate of Fair Value Measurement [Member]	'		'
Derivatives:	'		'
Derivative liabilities	5	[2],[5]	'
Fair Value, Measurements, Recurring [Member] | Copper futures and swap contracts [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	5	[2],[5]	'
Fair Value, Measurements, Recurring [Member] | Copper futures and swap contracts [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	0	[2],[5]	'
Fair Value, Measurements, Recurring [Member] | Copper futures and swap contracts [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	0	[2],[5]	'
Fair Value, Measurements, Recurring [Member] | Copper forward contracts [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Derivatives:	'		'
Derivative liabilities	4	[2],[5]	1	[2],[5]
Fair Value, Measurements, Recurring [Member] | Copper forward contracts [Member] | Estimate of Fair Value Measurement [Member]	'		'
Derivatives:	'		'
Derivative liabilities	4	[2],[5]	1	[2],[5]
Fair Value, Measurements, Recurring [Member] | Copper forward contracts [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	2	[2],[5]	1	[2],[5]
Fair Value, Measurements, Recurring [Member] | Copper forward contracts [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	2	[2],[5]	0	[2],[5]
Fair Value, Measurements, Recurring [Member] | Copper forward contracts [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	0	[2],[5]	0	[2],[5]
Fair Value, Measurements, Recurring [Member] | Plains Offshore Warrants [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Derivatives:	'		'
Derivative liabilities	'		2	[2],[7]
Fair Value, Measurements, Recurring [Member] | Plains Offshore Warrants [Member] | Estimate of Fair Value Measurement [Member]	'		'
Derivatives:	'		'
Derivative liabilities	'		2	[2],[7]
Fair Value, Measurements, Recurring [Member] | Plains Offshore Warrants [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	'		0	[2],[7]
Fair Value, Measurements, Recurring [Member] | Plains Offshore Warrants [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	'		0	[2],[7]
Fair Value, Measurements, Recurring [Member] | Plains Offshore Warrants [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Derivatives:	'		'
Derivative liabilities	'		2	[2],[7]
Fair Value, Measurements, Recurring [Member] | Money market funds [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	20	[1],[2],[3]	18	[1],[2]
Legally restricted funds (long-term):	'		'
Legally restricted funds	8	[1],[2],[4]	28	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Money market funds [Member] | Estimate of Fair Value Measurement [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	20	[1],[2],[3]	18	[1],[2]
Legally restricted funds (long-term):	'		'
Legally restricted funds	8	[1],[2],[4]	28	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Money market funds [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	20	[1],[2],[3]	18	[1],[2]
Legally restricted funds (long-term):	'		'
Legally restricted funds	8	[1],[2],[4]	28	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Money market funds [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	0	[1],[2],[3]	0	[1],[2]
Legally restricted funds (long-term):	'		'
Legally restricted funds	0	[1],[2],[4]	0	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Money market funds [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	0	[1],[2],[3]	0	[1],[2]
Legally restricted funds (long-term):	'		'
Legally restricted funds	0	[1],[2],[4]	0	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | U.S. core fixed income fund [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	22	[1],[2],[3]	21	[1],[2]
Legally restricted funds (long-term):	'		'
Legally restricted funds	50	[1],[2],[4]	48	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | U.S. core fixed income fund [Member] | Estimate of Fair Value Measurement [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	22	[1],[2],[3]	21	[1],[2]
Legally restricted funds (long-term):	'		'
Legally restricted funds	50	[1],[2],[4]	48	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | U.S. core fixed income fund [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	0	[1],[2],[3]	0	[1],[2]
Legally restricted funds (long-term):	'		'
Legally restricted funds	0	[1],[2],[4]	0	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | U.S. core fixed income fund [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	22	[1],[2],[3]	21	[1],[2]
Legally restricted funds (long-term):	'		'
Legally restricted funds	50	[1],[2],[4]	48	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | U.S. core fixed income fund [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	0	[1],[2],[3]	0	[1],[2]
Legally restricted funds (long-term):	'		'
Legally restricted funds	0	[1],[2],[4]	0	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Equity securities [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	4	[1],[2],[3]	5	[1],[2]
Fair Value, Measurements, Recurring [Member] | Equity securities [Member] | Estimate of Fair Value Measurement [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	4	[1],[2],[3]	5	[1],[2]
Fair Value, Measurements, Recurring [Member] | Equity securities [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	4	[1],[2],[3]	5	[1],[2]
Fair Value, Measurements, Recurring [Member] | Equity securities [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	0	[1],[2],[3]	0	[1],[2]
Fair Value, Measurements, Recurring [Member] | Equity securities [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	0	[1],[2],[3]	0	[1],[2]
Fair Value, Measurements, Recurring [Member] | Government bonds and notes [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	35	[1],[2],[4]	28	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Government bonds and notes [Member] | Estimate of Fair Value Measurement [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	35	[1],[2],[4]	28	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Government bonds and notes [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	0	[1],[2],[4]	0	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Government bonds and notes [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	35	[1],[2],[4]	28	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Government bonds and notes [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	0	[1],[2],[4]	0	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Government mortgage-backed securities [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	33	[1],[2],[4]	34	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Government mortgage-backed securities [Member] | Estimate of Fair Value Measurement [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	33	[1],[2],[4]	34	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Government mortgage-backed securities [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	0	[1],[2],[4]	0	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Government mortgage-backed securities [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	33	[1],[2],[4]	34	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Government mortgage-backed securities [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	0	[1],[2],[4]	0	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Corporate bonds [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	26	[1],[2],[4]	28	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Corporate bonds [Member] | Estimate of Fair Value Measurement [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	26	[1],[2],[4]	28	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Corporate bonds [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	0	[1],[2],[4]	0	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Corporate bonds [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	26	[1],[2],[4]	28	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Corporate bonds [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	0	[1],[2],[4]	0	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Asset-backed securities [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	16	[1],[2],[4]	15	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Asset-backed securities [Member] | Estimate of Fair Value Measurement [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	16	[1],[2],[4]	15	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Asset-backed securities [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	0	[1],[2],[4]	0	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Asset-backed securities [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	16	[1],[2],[4]	15	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Asset-backed securities [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	0	[1],[2],[4]	0	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Municipal bonds [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	1	[1],[2],[4]	1	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Municipal bonds [Member] | Estimate of Fair Value Measurement [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	1	[1],[2],[4]	1	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Municipal bonds [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	0	[1],[2],[4]	0	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Municipal bonds [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	1	[1],[2],[4]	1	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Municipal bonds [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Legally restricted funds (long-term):	'		'
Legally restricted funds	0	[1],[2],[4]	0	[1],[2],[4]
Fair Value, Measurements, Recurring [Member] | Embedded derivatives in provisional sales/purchases contracts [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Derivatives:	'		'
Derivative assets	12	[2],[5]	63	[2],[5]
Fair Value, Measurements, Recurring [Member] | Embedded derivatives in provisional sales/purchases contracts [Member] | Estimate of Fair Value Measurement [Member]	'		'
Derivatives:	'		'
Derivative assets	12	[2],[5]	63	[2],[5]
Fair Value, Measurements, Recurring [Member] | Embedded derivatives in provisional sales/purchases contracts [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Derivatives:	'		'
Derivative assets	0	[2],[5]	0	[2],[5]
Fair Value, Measurements, Recurring [Member] | Embedded derivatives in provisional sales/purchases contracts [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Derivatives:	'		'
Derivative assets	12	[2],[5]	63	[2],[5]
Fair Value, Measurements, Recurring [Member] | Embedded derivatives in provisional sales/purchases contracts [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Derivatives:	'		'
Derivative assets	0	[2],[5]	0	[2],[5]
Fair Value, Measurements, Recurring [Member] | Copper futures and swap contracts [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Derivatives:	'		'
Derivative assets	1	[2],[5]	6	[2],[5]
Fair Value, Measurements, Recurring [Member] | Copper futures and swap contracts [Member] | Estimate of Fair Value Measurement [Member]	'		'
Derivatives:	'		'
Derivative assets	1	[2],[5]	6	[2],[5]
Fair Value, Measurements, Recurring [Member] | Copper futures and swap contracts [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Derivatives:	'		'
Derivative assets	1	[2],[5]	5	[2],[5]
Fair Value, Measurements, Recurring [Member] | Copper futures and swap contracts [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Derivatives:	'		'
Derivative assets	0	[2],[5]	1	[2],[5]
Fair Value, Measurements, Recurring [Member] | Copper futures and swap contracts [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Derivatives:	'		'
Derivative assets	0	[2],[5]	0	[2],[5]
Deferred Option Premiums and Accrued Interest [Member]	'		'
Derivatives:	'		'
Derivative liabilities	269		444
Other Current Assets [Member]	'		'
Derivatives:	'		'
Derivative assets	0		6
Derivatives:	'		'
Derivative liabilities	0		0
Other Current Assets [Member] | Fair Value, Measurements, Recurring [Member] | Time Deposits [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	9		15
Other Assets [Member] | Fair Value, Measurements, Recurring [Member] | Time Deposits [Member] | Carrying Amount, Fair Value Disclosure [Member]	'		'
Investment securities (current and long-term):	'		'
Investment securities	'		$210
[1]	Current portion included in other current assets and long-term portion included in other assets.
[2]	Recorded at fair value.
[3]	Excluded $115 million of time deposits (which approximated fair value) at September 30, 2014 (included in other assets), associated with an assurance bond to support PTFI's commitment for smelter development in Indonesia (refer to Note 9 for further discussion).
[4]	Excluded time deposits (which approximated fair value) of $9 million at September 30, 2014 (included in other current assets), associated with a customs audit assessment at PT-FI, and $15 million included in other current assets and $210 million in other assets at December 31, 2013, associated with the Cerro Verde royalty dispute.
[5]	Refer to Note 7 for further discussion and balance sheet classifications. Crude oil options are net of $269 million at September 30, 2014, and $444 million at December 31, 2013, for deferred premiums and accrued interest.
[6]	Recorded at cost except for debt assumed in acquisitions, which were recorded at fair value at the respective acquisition dates.
[7]	Included in other liabilities.

Fair_Value_Measurement_Unaudit3

Fair Value Measurement (Unaudited) Unobservable Inputs (Details) (USD $)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

In Millions, unless otherwise specified

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Plains Offshore Warrants [Member]

Crude Oil Options [Member]

Crude Oil Options [Member]

Crude Oil Options [Member]

Crude Oil Options [Member]

Crude Oil Options [Member]

Crude Oil Options [Member]

Crude Oil Options [Member]

Sales [Member]

Interest Expense [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Weighted Average [Member]

Weighted Average [Member]

Crude Oil Options [Member]

Crude Oil Options [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair Value Assumptions, Implied Volatilities

'

'

'

'

'

'

'

17.00%

'

33.00%

'

21.00%

'

'

Deferred Premium Price

'

'

'

'

'

'

5.15

'

7.22

'

6.64

'

'

'

Derivative Liability

($265)

($320)

($182)

[1],[2]

($311)

[1]

($2)

($309)

'

'

'

'

'

'

'

'

Net realized losses

'

'

'

'

0

-21

[3]

'

'

'

'

'

'

-20

[3]

-1

[3]

Net unrealized (losses) gains included in earnings related to assets and liabilities still held at the end of the period

'

'

'

'

2

[4]

-29

[5]

'

'

'

'

'

'

-28

-1

Settlement payments

'

'

'

'

0

177

'

'

'

'

'

'

'

'

Derivative Liability

($265)

($320)

($182)

[1],[2]

($311)

[1]

$0

($182)

'

'

'

'

'

'

'

'

[1]

Recorded at fair value.

[2]

Refer to Note 7 for further discussion and balance sheet classifications. Crude oil options are net of $269 million at September 30, 2014, and $444 million at December 31, 2013, for deferred premiums and accrued interest.

[3]

Included net realized losses of $20 million recorded in revenues and $1 million of interest expense associated with the deferred premiums.

[4]

Recorded in other income, net.

[5]

Included net unrealized losses of $28 million recorded in revenues and $1 million of interest expense associated with the deferred premiums.

Contingencies_and_Commitments_1

Contingencies and Commitments (Unaudited) (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Jul. 25, 2014	Dec. 31, 2013
PT Freeport Indonesia [Member]	'	'	'	'	'
Loss Contingencies [Line Items]	'	'	'	'	'
Proceeds from Income Tax Refunds	'	$151	'	'	'
Tax Overpayment	'	'	'	'	303
Disputed Tax Assessments Receivable	392	'	'	'	'
Effective Date, Memorandum of Understanding with Foreign Government	25-Jul-14	'	'	'	'
Expiration Date, Contract of Work	31-Dec-21	'	'	'	'
Percent Of Undivided Interest Owned By Third Party	'	'	'	30.00%	'
Incremental Percent of Undivided Interest Owned by Third Party	'	'	'	20.64%	'
Assurance Bond, Smelter Development	115	'	'	'	'
Copper Royalty Rate Payable	4.00%	'	3.50%	'	'
Gold And Silver Sales Royalty Rate	3.75%	'	1.00%	'	'
Minimum [Member] | PT Freeport Indonesia [Member]	'	'	'	'	'
Loss Contingencies [Line Items]	'	'	'	'	'
Date, Contract of Work Extension	31-Dec-22	'	'	'	'
Maximum [Member] | PT Freeport Indonesia [Member]	'	'	'	'	'
Loss Contingencies [Line Items]	'	'	'	'	'
Date, Contract of Work Extension	31-Dec-41	'	'	'	'
Stage 1 [Member] | PT Freeport Indonesia [Member]	'	'	'	'	'
Loss Contingencies [Line Items]	'	'	'	'	'
Progressive Export Duty on Copper Concentrates, Percent	7.50%	'	'	'	'
Stage 2 [Member] | PT Freeport Indonesia [Member]	'	'	'	'	'
Loss Contingencies [Line Items]	'	'	'	'	'
Progressive Export Duty on Copper Concentrates, Percent	5.00%	'	'	'	'
Smelter Development Progress, Percent	7.50%	'	'	'	'
Stage 3 [Member] | PT Freeport Indonesia [Member]	'	'	'	'	'
Loss Contingencies [Line Items]	'	'	'	'	'
Progressive Export Duty on Copper Concentrates, Percent	0.00%	'	'	'	'
Smelter Development Progress, Percent	30.00%	'	'	'	'
Tax Assessment [Member] | Tax Year 2012 [Member]	'	'	'	'	'
Loss Contingencies [Line Items]	'	'	'	'	'
Assessment By Foreign Government Of Alleged Obligations	'	137	137	'	'
Other Assessments [Member] | Tax Year 2012 [Member]	'	'	'	'	'
Loss Contingencies [Line Items]	'	'	'	'	'
Assessment By Foreign Government Of Alleged Obligations	'	$15	$15	'	'

Business_Segments_Unaudited_De

Business Segments (Unaudited) (Details) (USD $)	3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended				9 Months Ended				3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		6 Months Ended	3 Months Ended		3 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013		Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2014	Oct. 06, 2014	Dec. 31, 2014	Oct. 06, 2014
						Mining Operations [Member]	Mining Operations [Member]	Mining Operations [Member]	Mining Operations [Member]	North America Copper Mines [Member]	North America Copper Mines [Member]	North America Copper Mines [Member]	North America Copper Mines [Member]	Morenci [Member]	Morenci [Member]	Morenci [Member]	Morenci [Member]	Other North America Copper Mines [Member]	Other North America Copper Mines [Member]	Other North America Copper Mines [Member]	Other North America Copper Mines [Member]	South America Mines [Member]	South America Mines [Member]	South America Mines [Member]	South America Mines [Member]	Cerro Verde [Member]	Cerro Verde [Member]	Cerro Verde [Member]	Cerro Verde [Member]	Candelaria [Member]	Candelaria [Member]	Candelaria [Member]	Candelaria [Member]	Other South America Mines [Member]	Other South America Mines [Member]	Other South America Mines [Member]	Other South America Mines [Member]	Indonesia - Grasberg [Member]		Indonesia - Grasberg [Member]		Indonesia - Grasberg [Member]		Indonesia - Grasberg [Member]		Africa - Tenke [Member]	Africa - Tenke [Member]	Africa - Tenke [Member]	Africa - Tenke [Member]	Molybdenum mines [Member]	Molybdenum mines [Member]	Molybdenum mines [Member]	Molybdenum mines [Member]	Rod & Refining [Member]	Rod & Refining [Member]	Rod & Refining [Member]	Rod & Refining [Member]	Atlantic Copper Smelting & Refining [Member]	Atlantic Copper Smelting & Refining [Member]	Atlantic Copper Smelting & Refining [Member]	Atlantic Copper Smelting & Refining [Member]	Other Mining & Eliminations [Member]		Other Mining & Eliminations [Member]		Other Mining & Eliminations [Member]		Other Mining & Eliminations [Member]		U.S. Oil & Gas Operations [Member]		U.S. Oil & Gas Operations [Member]		U.S. Oil & Gas Operations [Member]		U.S. Oil & Gas Operations [Member]		Corporate, Other & Eliminations [Member]	Corporate, Other & Eliminations [Member]	Corporate, Other & Eliminations [Member]	Corporate, Other & Eliminations [Member]		Crude oil and natural gas swaps [Member]	Crude oil and natural gas swaps [Member]	Crude oil and natural gas swaps [Member]	Crude oil and natural gas swaps [Member]	Pt Smelting [Member]	Pt Smelting [Member]	Pt Smelting [Member]	Pt Smelting [Member]	Plains Exploration & Production Company [Member]	Subsequent Event [Member]	Subsequent Event [Member]	Subsequent Event [Member]	Subsequent Event [Member]
																																																																																												Candelaria [Member]	Candelaria [Member]	Candelaria Other South America Segments [Member]	Candelaria Other South America Segments [Member]
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'		'		'		'		'	'	'	'		'	'	'	'	'	'	'	'	'	'	'	'	'
Business Acquisition, Date Results Included in Combined Entity	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'		'		'		'		'	'	'	'		'	'	'	'	'	'	'	'	1-Jun-13	'	'	'	'
Disposal Date	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'		'		'		'		'	'	'	'		'	'	'	'	'	'	'	'	'	3-Nov-14	'	3-Nov-14	'
Investment Owned, Percent of Net Assets	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'		'		'		'		'	'	'	'		'	'	'	'	'	'	'	'	'	'	80.00%	'	80.00%
Deferred Intercompany Profit, Percentage	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'		'		'		'		'	'	'	'		'	'	'	'	'	'	25.00%	'	'	'	'	'	'
Revenues:	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'		'		'		'		'	'	'	'		'	'	'	'	'	'	'	'	'	'	'	'	'
Unaffiliated customers	$5,696	$6,165	$16,203	$15,036	'	$4,706	$4,989	$12,716	$13,521	$219	$245	$410	$484	$140	$100	$215	$218	$79	$145	$195	$266	$736	$1,052	$2,383	$2,666	$295	$434	$996	$1,035	$141	$318	$482	$709	$300	$300	$905	$922	$1,086	[1]	$1,108	[1]	$2,071	[2]	$2,443	[2]	$379	$406	$1,071	$1,199	$0	$0	$0	$0	$1,219	$1,247	$3,599	$3,842	$597	$514	$1,808	$1,730	$470	[3]	$417	[3]	$1,374	[3]	$1,157	[3]	$990	[4]	$1,176	[4]	$3,487	[5]	$1,512	[5]	$0	$0	$0	$3		'	'	'	'	'	'	'	'	'	'	'	'	'
Intersegment	0	0	0	0	'	0	0	0	0	1,271	1,056	3,835	3,511	428	375	1,346	1,255	843	681	2,489	2,256	111	87	393	438	63	27	150	222	48	60	238	216	0	0	5	0	167		3		175		190		49	14	102	24	173	121	469	408	8	6	24	20	4	2	15	12	-1,783		-1,289		-5,013		-4,603		0		0		0		0		0	0	0	0		'	'	'	'	'	'	'	'	'	'	'	'	'
Production and delivery	3,152	3,332	8,971	8,904	'	2,880	3,042	8,060	8,517	902	807	2,558	2,459	341	287	936	885	561	520	1,622	1,574	471	494	1,477	1,485	178	175	538	535	142	163	456	504	151	156	483	446	700		617		1,594		1,743		206	190	556	560	86	82	243	240	1,220	1,245	3,601	3,835	578	523	1,784	1,726	-1,283		-916		-3,753		-3,531		273		288		913		377		-1	2	-2	10		'	'	'	'	'	'	'	'	'	'	'	'	'
Depreciation, depletion and amortization	945	919	2,924	1,778	'	438	353	1,178	1,038	133	102	368	312	51	35	128	105	82	67	240	207	102	85	284	242	41	35	120	105	14	19	49	44	47	31	115	93	92		60		194		173		58	64	172	179	25	21	71	62	2	2	7	7	11	10	31	32	15		9		51		31		504		563		1,736		732		3	3	10	8		'	'	'	'	'	'	'	'	'	'	'	'	'
Impairment of oil and gas properties	308	0	308	0	'	0	'	0	'	0	'	0	'	0	'	0	'	0	'	0	'	0	'	0	'	0	'	0	'	0	'	0	'	0	'	0	'	0		'		0		'		0	'	0	'	0	'	0	'	0	'	0	'	0	'	0	'	0		'		0		'		308		'		308		'		0	'	0	'		'	'	'	'	'	'	'	'	'	'	'	'	'
Selling, general and administrative expenses	158	158	457	457	'	43	45	123	137	1	1	3	4	0	0	1	1	1	1	2	3	1	2	5	5	0	0	2	2	0	1	1	2	1	1	2	1	27		29		73		82		3	3	9	9	0	0	0	0	0	0	0	0	4	5	13	14	7		5		20		23		55		51		171		65		60	62	163	255		'	'	'	'	'	'	'	'	'	'	'	'	'
Mining exploration and research expenses	29	57	93	173	'	29	55	93	165	2	2	6	3	0	0	0	0	2	2	6	3	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0		1		0		1		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	27		52		87		161		0		0		0		0		0	2	0	8		'	'	'	'	'	'	'	'	'	'	'	'	'
Environmental obligations and shutdown costs	18	-8	100	23	'	18	-8	100	23	-5	5	-5	-1	0	0	0	0	-5	5	-5	-1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0		0		0		0		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	23		-13		105		24		0		0		0		0		0	0	0	0		'	'	'	'	'	'	'	'	'	'	'	'	'
Net gain on sales of assets	-46	0	-46	0	'	-46	'	-46	'	-14	'	-14	'	0	'	0	'	-14	'	-14	'	0	'	0	'	0	'	0	'	0	'	0	'	0	'	0	'	0		'		0		'		0	'	0	'	0	'	0	'	0	'	0	'	0	'	0	'	-32		'		-32		'		0		'		0		'		0	'	0	'		'	'	'	'	'	'	'	'	'	'	'	'	'
Operating income (loss)	1,132	1,707	3,396	3,701	'	1,344	1,502	3,208	3,641	471	384	1,329	1,218	176	153	496	482	295	231	833	736	273	558	1,010	1,372	139	251	486	615	33	195	214	375	101	112	310	382	434		404		385		634		161	163	436	475	62	18	155	106	5	6	15	20	8	-22	-5	-30	-70		-9		-117		-154		-150		274		359		338		-62	-69	-171	-278		'	'	'	'	'	'	'	'	'	'	'	'	'
Interest expense, net	158	162	483	351	'	24	24	69	92	1	0	3	4	1	0	2	3	0	0	1	1	1	0	1	2	1	0	1	2	0	0	0	0	0	0	0	0	0		0		0		12		0	0	0	2	0	0	0	0	0	0	0	0	3	4	10	12	19		20		55		60		51		74		201		100		83	64	213	159		'	'	'	'	'	'	'	'	'	'	'	'	'
Provision for (benefit from) income taxes	349	499	1,034	967	'	359	400	668	860	0	0	0	0	0	0	0	0	0	0	0	0	142	194	409	472	47	92	177	215	4	67	72	131	91	35	160	126	181		173		166		289		36	33	93	99	0	0	0	0	0	0	0	0	0	0	0	0	0		0		0		0		0		0		0		0		-10	99	366	107	[6]	'	'	'	'	'	'	'	'	'	'	'	'	'
Total Assets	63,976	62,598	63,976	62,598	63,473	38,073	35,800	38,073	35,800	9,431	8,649	9,431	8,649	3,689	2,915	3,689	2,915	5,742	5,734	5,742	5,734	10,751	10,530	10,751	10,530	7,030	6,440	7,030	6,440	1,511	1,612	1,511	1,612	2,210	2,478	2,210	2,478	8,537		7,399		8,537		7,399		5,010	4,862	5,010	4,862	2,089	2,094	2,089	2,094	282	308	282	308	948	691	948	691	1,025		1,267		1,025		1,267		25,328		26,347		25,328		26,347		575	451	575	451		'	'	'	'	'	'	'	'	'	'	'	'	'
Capital expenditures	1,853	1,645	5,415	3,623	'	937	895	3,010	2,665	188	252	815	795	158	172	691	529	30	80	124	266	439	264	1,278	734	416	224	1,207	596	7	23	29	91	16	17	42	47	243		209		722		720		40	52	100	155	12	46	45	128	1	1	3	3	3	20	9	39	11		51		38		91		908		738		2,392		928		8	12	13	30		'	'	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'		'		'		'		'	'	'	'		'	'	'	'	628	458	1,540	1,179	'	'	'	'	'
Net mark-to-market gains (losses) on derivative contracts	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'		'		'		'		'	'	'	'		64	-170	-56	-205	'	'	'	'	'	'	'	'	'
Income Tax Expense (Benefit), Changes in Deferred Tax Liabilities and Deferred Tax Asset Valuation Allowances	'	($183)	$62	($183)	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'		'		'		'		'		'		'		'		'	'	'	'		'	'	'	'	'	'	'	'	'	'	'	'	'
[1]	Included PT-FI’s sales to PT Smelting totaling $628 million in third-quarter 2014 and $458 million in third-quarter 2013.
[2]	Included PT-FI’s sales to PT Smelting totaling $1.5 billion for the first nine months of 2014 and $1.2 billion for the first nine months of 2013
[3]	Included revenues from FCX's molybdenum sales company, which included sales of molybdenum produced by the Molybdenum mines and by certain of the North and South America copper mines.
[4]	Included net mark-to-market gains (losses) associated with crude oil and natural gas derivative contracts totaling $64 million in third-quarter 2014 and $(170) million in third-quarter 2013.
[5]	ncluded net mark-to-market losses associated with crude oil and natural gas derivative contracts totaling $56 million for the first nine months of 2014 and $205 million for the period from June 1, 2013 to September 30, 2013.
[6]	Included $183 million of net benefits resulting from second-quarter 2013 oil and gas acquisitions.

Guarantor_Financial_Statements2

Guarantor Financial Statements (Unaudited) (Details) (USD $)	Mar. 07, 2013	Sep. 30, 2014
In Billions, unless otherwise specified	Senior Notes [Member]	FM O&G LLC Guarantor [Member]
Debt Instrument [Line Items]	'	'
Debt Instrument, Face Amount	$6.50	'
Noncontrolling Interest, Ownership Percentage by Parent	'	100.00%

Guarantor_Financial_Statements3

Guarantor Financial Statements (Unaudited) Condensed Consolidating Balance Sheets (Details) (USD $)	Sep. 30, 2014		Dec. 31, 2013		Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Current assets:	'		'		'	'
Cash and cash equivalents	$658		$1,985		$2,219	$3,705
Accounts receivable	2,307		2,562		'	'
Other current assets	6,066		5,425		'	'
Total current assets	9,031		9,972		'	'
Property, plant, equipment and mining development costs, net	26,304		24,042		'	'
Oil and gas properties - full cost method	'		'		'	'
Subject to amortization, less accumulated amortization	11,306		12,472		'	'
Not subject to amortization	11,031		10,887		'	'
Investments in consolidated subsidiaries	0		0		'	'
Goodwill	1,717		1,916		'	'
Other assets	4,587		4,184		'	'
Total assets	63,976		63,473		62,598	'
LIABILITIES AND EQUITY	'		'		'	'
Current liabilities	6,343		4,773		'	'
Long-term debt, less current portion	17,975		20,394		'	'
Deferred income taxes	7,559		7,410		'	'
Environmental and asset retirement obligations, less current portion	3,654		3,259		'	'
Other liabilities	1,730		1,690		'	'
Total liabilities	37,261		37,526		'	'
Redeemable noncontrolling interest	749		716		'	'
Equity:	'		'		'	'
Stockholders' equity	21,591		20,934		'	'
Noncontrolling interests	4,375		4,297		'	'
Total equity	25,966		25,231		'	'
Total liabilities and equity	63,976		63,473		'	'
FCX Issuer [Member]	'		'		'	'
Current assets:	'		'		'	'
Cash and cash equivalents	0		0		0	0
Accounts receivable	348		855		'	'
Other current assets	104		114		'	'
Total current assets	452		969		'	'
Property, plant, equipment and mining development costs, net	23		27		'	'
Oil and gas properties - full cost method	'		'		'	'
Subject to amortization, less accumulated amortization	0		0		'	'
Not subject to amortization	0		0		'	'
Investments in consolidated subsidiaries	33,908		31,162		'	'
Goodwill	0		0		'	'
Other assets	6,512		7,126		'	'
Total assets	40,895		39,284		'	'
LIABILITIES AND EQUITY	'		'		'	'
Current liabilities	1,664		1,003		'	'
Long-term debt, less current portion	13,355		13,184		'	'
Deferred income taxes	4,233	[1]	4,137	[1]	'	'
Environmental and asset retirement obligations, less current portion	0		0		'	'
Other liabilities	52		26		'	'
Total liabilities	19,304		18,350		'	'
Redeemable noncontrolling interest	0		0		'	'
Equity:	'		'		'	'
Stockholders' equity	21,591		20,934		'	'
Noncontrolling interests	0		0		'	'
Total equity	21,591		20,934		'	'
Total liabilities and equity	40,895		39,284		'	'
FM O&G LLC Guarantor [Member]	'		'		'	'
Current assets:	'		'		'	'
Cash and cash equivalents	1		0		2	0
Accounts receivable	1,814		659		'	'
Other current assets	73		38		'	'
Total current assets	1,888		697		'	'
Property, plant, equipment and mining development costs, net	45		43		'	'
Oil and gas properties - full cost method	'		'		'	'
Subject to amortization, less accumulated amortization	4,235		6,207		'	'
Not subject to amortization	2,346		2,649		'	'
Investments in consolidated subsidiaries	10,492		9,712		'	'
Goodwill	217		437		'	'
Other assets	3,913		4,640		'	'
Total assets	23,136		24,385		'	'
LIABILITIES AND EQUITY	'		'		'	'
Current liabilities	985		758		'	'
Long-term debt, less current portion	5,301		7,199		'	'
Deferred income taxes	0		0		'	'
Environmental and asset retirement obligations, less current portion	302		301		'	'
Other liabilities	3,403		3,436		'	'
Total liabilities	9,991		11,694		'	'
Redeemable noncontrolling interest	0		0		'	'
Equity:	'		'		'	'
Stockholders' equity	13,145		12,691		'	'
Noncontrolling interests	0		0		'	'
Total equity	13,145		12,691		'	'
Total liabilities and equity	23,136		24,385		'	'
Non-Guarantor Subsidiaries [Member]	'		'		'	'
Current assets:	'		'		'	'
Cash and cash equivalents	657		1,985		2,217	3,705
Accounts receivable	2,187		2,258		'	'
Other current assets	5,889		5,273		'	'
Total current assets	8,733		9,516		'	'
Property, plant, equipment and mining development costs, net	26,236		23,972		'	'
Oil and gas properties - full cost method	'		'		'	'
Subject to amortization, less accumulated amortization	6,727		6,265		'	'
Not subject to amortization	8,685		8,238		'	'
Investments in consolidated subsidiaries	13,063		12,468		'	'
Goodwill	1,500		1,479		'	'
Other assets	4,439		4,128		'	'
Total assets	69,383		66,066		'	'
LIABILITIES AND EQUITY	'		'		'	'
Current liabilities	5,294		4,222		'	'
Long-term debt, less current portion	6,562		8,056		'	'
Deferred income taxes	3,326		3,273		'	'
Environmental and asset retirement obligations, less current portion	3,352		2,958		'	'
Other liabilities	1,751		1,893		'	'
Total liabilities	20,285		20,402		'	'
Redeemable noncontrolling interest	749		716		'	'
Equity:	'		'		'	'
Stockholders' equity	44,460		41,100		'	'
Noncontrolling interests	3,889		3,848		'	'
Total equity	48,349		44,948		'	'
Total liabilities and equity	69,383		66,066		'	'
Eliminations [Member]	'		'		'	'
Current assets:	'		'		'	'
Cash and cash equivalents	0		0		0	0
Accounts receivable	-2,042		-1,210		'	'
Other current assets	0		0		'	'
Total current assets	-2,042		-1,210		'	'
Property, plant, equipment and mining development costs, net	0		0		'	'
Oil and gas properties - full cost method	'		'		'	'
Subject to amortization, less accumulated amortization	344		0		'	'
Not subject to amortization	0		0		'	'
Investments in consolidated subsidiaries	-57,463		-53,342		'	'
Goodwill	0		0		'	'
Other assets	-10,277		-11,710		'	'
Total assets	-69,438		-66,262		'	'
LIABILITIES AND EQUITY	'		'		'	'
Current liabilities	-1,600		-1,210		'	'
Long-term debt, less current portion	-7,243		-8,045		'	'
Deferred income taxes	0		0		'	'
Environmental and asset retirement obligations, less current portion	0		0		'	'
Other liabilities	-3,476		-3,665		'	'
Total liabilities	-12,319		-12,920		'	'
Redeemable noncontrolling interest	0		0		'	'
Equity:	'		'		'	'
Stockholders' equity	-57,605		-53,791		'	'
Noncontrolling interests	486		449		'	'
Total equity	-57,119		-53,342		'	'
Total liabilities and equity	($69,438)		($66,262)		'	'
[1]	All U.S. related deferred income taxes are recorded at the parent company.

Guarantor_Financial_Statements4

Guarantor Financial Statements (Unaudited) Condensed Consolidating Statements of Income (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues	$5,696	$6,165	$16,203	$15,036
Total costs and expenses	4,564	4,458	12,807	11,335
Operating (loss) income	1,132	1,707	3,396	3,701
Interest expense, net	-158	-162	-483	-351
Net gain (loss) on early extinguishment of debt	58	0	63	-45
Gain on investment in MMR	0	0	0	128
Other income (expense), net	23	3	48	13
Provision for income taxes	-349	-499	-1,034	-967
Equity in affiliated companies' net earnings (losses)	-2	-1	0	3
Net income	704	1,048	1,990	2,482
Net income and preferred dividends attributable to noncontrolling interests	-152	-227	-446	-531
Net income attributable to FCX common stockholders	552	821	1,544	1,951
Other comprehensive income	7	11	11	22
Total comprehensive income (loss)	559	832	1,555	1,973
FCX Issuer [Member]	'	'	'	'
Revenues	0	0	0	0
Total costs and expenses	12	11	44	106
Operating (loss) income	-12	-11	-44	-106
Interest expense, net	-99	-94	-268	-222
Net gain (loss) on early extinguishment of debt	0	'	-1	-45
Gain on investment in MMR	'	'	'	128
Other income (expense), net	15	24	52	39
Provision for income taxes	46	35	51	61
Equity in affiliated companies' net earnings (losses)	602	867	1,754	2,096
Net income	552	821	1,544	1,951
Net income and preferred dividends attributable to noncontrolling interests	0	0	0	0
Net income attributable to FCX common stockholders	552	821	1,544	1,951
Other comprehensive income	0	0	0	0
Total comprehensive income (loss)	552	821	1,544	1,951
FM O&G LLC Guarantor [Member]	'	'	'	'
Revenues	370	512	1,584	674
Total costs and expenses	916	452	1,931	587
Operating (loss) income	-546	60	-347	87
Interest expense, net	-38	-51	-123	-63
Net gain (loss) on early extinguishment of debt	58	'	64	0
Gain on investment in MMR	'	'	'	0
Other income (expense), net	0	0	1	0
Provision for income taxes	-104	-5	-121	-10
Equity in affiliated companies' net earnings (losses)	381	187	637	207
Net income	-249	191	111	221
Net income and preferred dividends attributable to noncontrolling interests	0	0	0	0
Net income attributable to FCX common stockholders	-249	191	111	221
Other comprehensive income	0	0	0	0
Total comprehensive income (loss)	-249	191	111	221
Non-Guarantor Subsidiaries [Member]	'	'	'	'
Revenues	5,326	5,653	14,619	14,362
Total costs and expenses	3,966	3,995	11,170	10,642
Operating (loss) income	1,360	1,658	3,449	3,720
Interest expense, net	-37	-40	-146	-104
Net gain (loss) on early extinguishment of debt	0	'	0	0
Gain on investment in MMR	'	'	'	0
Other income (expense), net	24	2	49	12
Provision for income taxes	-166	-529	-836	-1,018
Equity in affiliated companies' net earnings (losses)	-111	47	228	1
Net income	1,070	1,138	2,744	2,611
Net income and preferred dividends attributable to noncontrolling interests	-130	-202	-421	-494
Net income attributable to FCX common stockholders	940	936	2,323	2,117
Other comprehensive income	7	11	11	22
Total comprehensive income (loss)	947	947	2,334	2,139
Eliminations [Member]	'	'	'	'
Revenues	0	0	0	0
Total costs and expenses	-330	0	-338	0
Operating (loss) income	330	0	338	0
Interest expense, net	16	23	54	38
Net gain (loss) on early extinguishment of debt	0	'	0	0
Gain on investment in MMR	'	'	'	0
Other income (expense), net	-16	-23	-54	-38
Provision for income taxes	-125	0	-128	0
Equity in affiliated companies' net earnings (losses)	-874	-1,102	-2,619	-2,301
Net income	-669	-1,102	-2,409	-2,301
Net income and preferred dividends attributable to noncontrolling interests	-22	-25	-25	-37
Net income attributable to FCX common stockholders	-691	-1,127	-2,434	-2,338
Other comprehensive income	0	0	0	0
Total comprehensive income (loss)	($691)	($1,127)	($2,434)	($2,338)

Guarantor_Financial_Statements5

Guarantor Financial Statements (Unaudited) Condensed Consolidating Statements of Cash Flows (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Cash flow from operating activities:	'	'
Net income	$1,990	$2,482
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:	'	'
Depreciation, depletion and amortization	2,924	1,778
Impairment of oil and gas properties	308	0
Net losses on crude oil and natural gas derivative contracts	56	205
Gains (Losses) on Extinguishment of Debt	-63	45
Gain on investment in McMoRan Exploration Co. (MMR)	0	-128
Equity in (earnings) losses of consolidated subsidiaries	0	0
Other, net	-3	-150
Increase (Decrease) in Operating Capital	-699	-489
Net cash provided by operating activities	4,513	3,743
Cash flow from investing activities:	'	'
Capital expenditures	-5,415	-3,623
Acquisitions	-1,421	-5,441
Intercompany loans	0	0
Investment in consolidated subsidiary	0	'
Cash Dividends Paid to Parent Company	'	0
Net proceeds from sale of Eagle Ford shale assets	2,971	0
Other, net	221	-24
Net cash used in investing activities	-3,644	-9,088
Cash flow from financing activities:	'	'
Proceeds from debt	3,346	11,229
Repayments of debt	-4,196	-5,043
Intercompany loans	0	0
Cash dividends and distributions paid, and contributions received	-1,344	-2,114
Other, net	-2	-213
Net cash (used in) provided by financing activities	-2,196	3,859
Net decrease in cash and cash equivalents	-1,327	-1,486
Cash and cash equivalents at beginning of year	1,985	3,705
Cash and cash equivalents at end of period	658	2,219
FCX Issuer [Member]	'	'
Cash flow from operating activities:	'	'
Net income	1,544	1,951
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:	'	'
Depreciation, depletion and amortization	3	3
Impairment of oil and gas properties	0	'
Net losses on crude oil and natural gas derivative contracts	0	0
Gains (Losses) on Extinguishment of Debt	1	45
Gain on investment in McMoRan Exploration Co. (MMR)	'	-128
Equity in (earnings) losses of consolidated subsidiaries	-1,754	-2,096
Other, net	87	8
Increase (Decrease) in Operating Capital	-217	112
Net cash provided by operating activities	-336	-105
Cash flow from investing activities:	'	'
Capital expenditures	0	0
Acquisitions	0	-5,437
Intercompany loans	1,151	793
Investment in consolidated subsidiary	-959	'
Cash Dividends Paid to Parent Company	'	321
Net proceeds from sale of Eagle Ford shale assets	0	'
Other, net	0	14
Net cash used in investing activities	192	-4,309
Cash flow from financing activities:	'	'
Proceeds from debt	2,806	11,085
Repayments of debt	-1,686	-4,501
Intercompany loans	0	0
Cash dividends and distributions paid, and contributions received	-979	-1,957
Other, net	3	-213
Net cash (used in) provided by financing activities	144	4,414
Net decrease in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of year	0	0
Cash and cash equivalents at end of period	0	0
FM O&G LLC Guarantor [Member]	'	'
Cash flow from operating activities:	'	'
Net income	111	221
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:	'	'
Depreciation, depletion and amortization	673	341
Impairment of oil and gas properties	625	'
Net losses on crude oil and natural gas derivative contracts	56	205
Gains (Losses) on Extinguishment of Debt	-64	0
Gain on investment in McMoRan Exploration Co. (MMR)	'	0
Equity in (earnings) losses of consolidated subsidiaries	-637	-207
Other, net	-17	-15
Increase (Decrease) in Operating Capital	-1,166	518
Net cash provided by operating activities	-419	1,063
Cash flow from investing activities:	'	'
Capital expenditures	-1,771	-621
Acquisitions	0	0
Intercompany loans	734	0
Investment in consolidated subsidiary	-97	'
Cash Dividends Paid to Parent Company	'	0
Net proceeds from sale of Eagle Ford shale assets	2,971	'
Other, net	32	32
Net cash used in investing activities	1,869	-589
Cash flow from financing activities:	'	'
Proceeds from debt	0	0
Repayments of debt	-1,996	-416
Intercompany loans	213	-56
Cash dividends and distributions paid, and contributions received	336	0
Other, net	-2	0
Net cash (used in) provided by financing activities	-1,449	-472
Net decrease in cash and cash equivalents	1	2
Cash and cash equivalents at beginning of year	0	0
Cash and cash equivalents at end of period	1	2
Non-Guarantor Subsidiaries [Member]	'	'
Cash flow from operating activities:	'	'
Net income	2,744	2,611
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:	'	'
Depreciation, depletion and amortization	2,269	1,434
Impairment of oil and gas properties	0	'
Net losses on crude oil and natural gas derivative contracts	0	0
Gains (Losses) on Extinguishment of Debt	0	0
Gain on investment in McMoRan Exploration Co. (MMR)	'	0
Equity in (earnings) losses of consolidated subsidiaries	4	2
Other, net	-73	-143
Increase (Decrease) in Operating Capital	684	-1,119
Net cash provided by operating activities	5,628	2,785
Cash flow from investing activities:	'	'
Capital expenditures	-3,644	-3,002
Acquisitions	-1,421	-4
Intercompany loans	0	-1,095
Investment in consolidated subsidiary	-696	'
Cash Dividends Paid to Parent Company	'	0
Net proceeds from sale of Eagle Ford shale assets	0	'
Other, net	189	-70
Net cash used in investing activities	-5,572	-4,171
Cash flow from financing activities:	'	'
Proceeds from debt	540	144
Repayments of debt	-514	-126
Intercompany loans	-2,098	358
Cash dividends and distributions paid, and contributions received	691	-478
Other, net	-3	0
Net cash (used in) provided by financing activities	-1,384	-102
Net decrease in cash and cash equivalents	-1,328	-1,488
Cash and cash equivalents at beginning of year	1,985	3,705
Cash and cash equivalents at end of period	657	2,217
Eliminations [Member]	'	'
Cash flow from operating activities:	'	'
Net income	-2,409	-2,301
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:	'	'
Depreciation, depletion and amortization	-21	0
Impairment of oil and gas properties	-317	'
Net losses on crude oil and natural gas derivative contracts	0	0
Gains (Losses) on Extinguishment of Debt	0	0
Gain on investment in McMoRan Exploration Co. (MMR)	'	0
Equity in (earnings) losses of consolidated subsidiaries	2,387	2,301
Other, net	0	0
Increase (Decrease) in Operating Capital	0	0
Net cash provided by operating activities	-360	0
Cash flow from investing activities:	'	'
Capital expenditures	0	0
Acquisitions	0	0
Intercompany loans	-1,885	302
Investment in consolidated subsidiary	1,752	'
Cash Dividends Paid to Parent Company	'	-321
Net proceeds from sale of Eagle Ford shale assets	0	'
Other, net	0	0
Net cash used in investing activities	-133	-19
Cash flow from financing activities:	'	'
Proceeds from debt	0	0
Repayments of debt	0	0
Intercompany loans	1,885	-302
Cash dividends and distributions paid, and contributions received	-1,392	321
Other, net	0	0
Net cash (used in) provided by financing activities	493	19
Net decrease in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of year	0	0
Cash and cash equivalents at end of period	$0	$0

Subsequent_Events_Unaudited_De

Subsequent Events (Unaudited) (Details) (USD $)	3 Months Ended		9 Months Ended				3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2014	Nov. 03, 2014	Oct. 06, 2014
					Candelaria and Ojos del Salado Mining Complex [Member]	Candelaria and Ojos del Salado Mining Complex [Member]	Candelaria and Ojos del Salado Mining Complex [Member]	Candelaria and Ojos del Salado Mining Complex [Member]	Candelaria and Ojos del Salado Mining Complex [Member]
							Subsequent Event [Member]	Subsequent Event [Member]	Subsequent Event [Member]
Subsequent Event [Line Items]	'	'	'	'	'	'	'	'	'
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	$1,055,000,000	$1,548,000,000	$3,024,000,000	$3,446,000,000	$236,000,000	$391,000,000	'	'	'
Disposal Date	'	'	'	'	'	'	3-Nov-14	'	'
Investment Owned, Percent of Net Assets	'	'	'	'	'	'	'	'	80.00%
Proceeds from Divestiture of Businesses, Net of Cash Divested	'	'	'	'	'	'	1,800,000,000	'	'
Contingent Consideration Arrangements, Range of Outcomes, Value, High	'	'	'	'	'	'	'	200,000,000	'
Business Combination, Contingent Consideration Arrangements, Basis for Amount	'	'	'	'	'	'	'five percent of net copper revenues in any annual period over the next five years when the average realized copper price exceeds $4.00 per pound	'	'
Proceeds from Divestiture of Businesses, Net of Tax	'	'	'	'	'	'	1,500,000,000	'	'
Significant Acquisitions and Disposals, Gain (Loss) on Sale or Disposal, Pretax	'	'	'	'	'	'	'	680,000,000	'
Significant Acquisitions and Disposals, Gain (Loss) on Sale or Disposal, Net of Tax	'	'	'	'	'	'	'	450,000,000	'
Effective Date of Transaction	'	'	'	'	'	'	30-Jun-14	'	'
Disposal Group, Assets, Current	'	'	'	'	449,000,000	'	'	'	'
Disposal Group, Assets, Noncurrent	'	'	'	'	1,160,000,000	'	'	'	'
Disposal Group, Liabilities, Current	'	'	'	'	138,000,000	'	'	'	'
Disposal Group, Liabilities, Noncurrent	'	'	'	'	92,000,000	'	'	'	'
Net income attributable to FCX common stockholders	$552,000,000	$821,000,000	$1,544,000,000	$1,951,000,000	$132,000,000	$199,000,000	'	'	'