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SUBSEQUENT EVENTS	12 Months Ended
SUBSEQUENT EVENTS	Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS In February 2015, FCX's revolving credit facility and Term Loan were modified to amend the maximum total leverage ratio. In addition, the Term Loan amortization schedule was extended such that, as amended, the Term Loan’s scheduled payments total $225 million in 2016, $269 million in 2017, $1.1 billion in 2018, $299 million in 2019 and $1.2 billion in 2020, compared with $650 million in 2016, $200 million in 2017 and $2.2 billion in 2018. FCX evaluated events after December 31, 2014, and through the date the 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 financial statements.