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Income Taxes (Unaudited) (Tables)
9 Months Ended
Sep. 30, 2017
Income Tax Disclosure [Abstract]  
Income before income taxes and equity in an affiliated companies' net earnings
Geographic sources of FCX’s (provision for) benefit from income taxes follow (in millions):
 
Three Months Ended
 
Nine Months Ended
 
 
September 30,
 
September 30,
 
 
2017
 
2016
 
2017
 
2016
 
U.S. operationsa
$
2

 
$
331

 
$
24

 
$
293

 
International operations
(389
)
b 
(217
)
 
(771
)
b 
(372
)
 
Total
$
(387
)
 
$
114

 
$
(747
)
 
$
(79
)
 

a.
Includes net tax (charges) credits of $(10) million for third-quarter 2017 and $21 million for the first nine months of 2017 associated with alternative minimum tax credit carryforwards. The third quarter and first nine months of 2016 include net tax credits of $332 million and $290 million, respectively, associated with alternative minimum tax credits, changes to valuation allowances and net operating loss carryback claims.
b.
Includes net charges of $2 million associated with the Cerro Verde mining royalties dispute, consisting of tax charges of $127 million for disputed royalties and other related mining taxes for the period October 2011 through the year 2013 (when royalties were determined based on operating income), mostly offset by a tax benefit of $125 million associated with disputed royalties and other related mining taxes for the period December 2006 through the year 2013.