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Subsequent Events (Unaudited)	3 Months Ended
Subsequent Events (Unaudited)	Mar. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS FCX evaluated events after March 31, 2020, 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.