XML 74 R77.htm IDEA: XBRL DOCUMENT
v2.4.0.8

INCOME TAXES (Mining Royalty Taxes) (Details) (Chile [Member]) | 12 Months Ended
--- | ---
Dec. 31, 2017 Stabilized Rate [Member] | Dec. 31, 2016 Stabilized Rate [Member] | Dec. 31, 2015 Stabilized Rate [Member] | Dec. 31, 2014 Stabilized Rate [Member] | Dec. 31, 2013 Stabilized Rate [Member] | Dec. 31, 2012 Stabilized Rate [Member] | Dec. 31, 2011 Stabilized Rate [Member] | Dec. 31, 2010 Stabilized Rate [Member] | Dec. 31, 2017 Special Mining Burden [Member] | Dec. 31, 2016 Special Mining Burden [Member] | Dec. 31, 2015 Special Mining Burden [Member] | Dec. 31, 2014 Special Mining Burden [Member] | Dec. 31, 2013 Special Mining Burden [Member] | Dec. 31, 2023 Minimum [Member] | Dec. 31, 2022 Minimum [Member] | Dec. 31, 2021 Minimum [Member] | Dec. 31, 2020 Minimum [Member] | Dec. 31, 2019 Minimum [Member] | Dec. 31, 2018 Minimum [Member] | Dec. 31, 2012 Minimum [Member] Special Mining Burden [Member] | Dec. 31, 2011 Minimum [Member] Special Mining Burden [Member] | Dec. 31, 2010 Minimum [Member] Special Mining Burden [Member] | Dec. 31, 2023 Maximum [Member] | Dec. 31, 2022 Maximum [Member] | Dec. 31, 2021 Maximum [Member] | Dec. 31, 2020 Maximum [Member] | Dec. 31, 2019 Maximum [Member] | Dec. 31, 2018 Maximum [Member] | Dec. 31, 2012 Maximum [Member] Special Mining Burden [Member] | Dec. 31, 2011 Maximum [Member] Special Mining Burden [Member] | Dec. 31, 2010 Maximum [Member] Special Mining Burden [Member]
Mining royalty taxes by location [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mining royalty tax rate | 4.00% | 4.00% | 4.00% | 4.00% | 4.00% | 4.00% | 4.00% | 4.00% | 4.00% | 4.00% | 4.00% | 4.00% | 4.00% | 5.00% | 5.00% | 5.00% | 5.00% | 5.00% | 5.00% | 4.00% | 4.00% | 4.00% | 14.00% | 14.00% | 14.00% | 14.00% | 14.00% | 14.00% | 9.00% | 9.00% | 9.00%

X
- Details
Name: | fcx_MiningRoyaltyTaxesByLocationLineItems
Namespace Prefix: | fcx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Statutory tax rate for foreign mining royalty taxes. + References No definition available. + Details
Name: | fcx_MiningRoyaltyTaxRate
Namespace Prefix: | fcx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration