Contingencies and Commitments (Unaudited)	6 Months Ended
Jun. 30, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	CONTINGENCIES AND COMMITMENTS Litigation. During second-quarter 2014, there were no significant updates to previously reported legal proceedings included in Note 12 of FCX’s annual report on Form 10-K for the year ended December 31, 2013, and 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 six 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. During second-quarter 2014, the Indonesian tax authorities issued a tax assessment for 2012 and refunded $151 million (before foreign exchange adjustments) in August 2014 associated with income tax overpayments made by PT-FI ($303 million was included in other accounts receivable in the condensed consolidated balance sheets at December 31, 2013). PT-FI expects to file objections and use other means available under Indonesian tax laws and regulations to recover the remaining 2012 overpayments that it believes it is due. As of June 30, 2014, PT-FI had $379 million included in other assets for amounts paid on disputed tax assessments, which it believes are collectable.

CONTINGENCIES AND COMMITMENTS

Litigation. During second-quarter 2014, there were no significant updates to previously reported legal proceedings included in Note 12 of FCX’s annual report on Form 10-K for the year ended December 31, 2013, and 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 six 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.

During second-quarter 2014, the Indonesian tax authorities issued a tax assessment for 2012 and refunded $151 million (before foreign exchange adjustments) in August 2014 associated with income tax overpayments made by PT-FI ($303 million was included in other accounts receivable in the condensed consolidated balance sheets at December 31, 2013). PT-FI expects to file objections and use other means available under Indonesian tax laws and regulations to recover the remaining 2012 overpayments that it believes it is due.

As of June 30, 2014, PT-FI had $379 million included in other assets for amounts paid on disputed tax assessments, which it believes are collectable.