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Debt and Equity (Tables)
 3 Months Ended
Mar. 31, 2019
Debt Disclosure [Abstract]  
Schedule of Debt The components of debt follow (in millions):
 
 
March 31,
2019
 
December 31, 2018
Senior notes and debentures:
 
 
 
 
Issued by FCX
 
$
8,595

 
$
9,594

Issued by Freeport Minerals Corporation (FMC)
 
357

 
358

Cerro Verde credit facility
 
825

 
1,023

Other
 
128

 
166

Total debt
 
9,905

 
11,141

Less current portion of debt
 
(3
)
 
(17
)
Long-term debt
 
$
9,902

 
$
11,124