CONTINGENCIES (Tax Matters by Tax Year) (Details) $ in Millions	Dec. 31, 2024 USD ($)
Cerro Verde
Income Tax Examination [Line Items]
Total	$ 397.0
PT-FI
Income Tax Examination [Line Items]
Total	121.0
SUNAT | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment	150.0
Penalties and Interest	313.0
Total	463.0
SUNAT | 2003 to 2008 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment	32.0
Penalties and Interest	112.0
Total	144.0
SUNAT | 2009 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment	9.0
Penalties and Interest	30.0
Total	39.0
SUNAT | 2010 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment	8.0
Penalties and Interest	69.0
Total	77.0
SUNAT | 2011 and 2012 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment	5.0
Penalties and Interest	36.0
Total	41.0
SUNAT | 2013 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment	8.0
Penalties and Interest	26.0
Total	34.0
SUNAT | Tax Year 2014 to Tax Year 2017 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment	88.0
Penalties and Interest	40.0
Total	128.0
Indonesia Tax Authority | PT-FI
Income Tax Examination [Line Items]
Tax Assessment	113.0
Penalties and Interest	54.0
Total	167.0
Indonesia Tax Authority | 2005 | PT-FI
Income Tax Examination [Line Items]
Tax Assessment	61.0
Penalties and Interest	29.0
Total	90.0
Indonesia Tax Authority | 2007 | PT-FI
Income Tax Examination [Line Items]
Tax Assessment	45.0
Penalties and Interest	21.0
Total	66.0
Indonesia Tax Authority | Tax Year 2013 And 2017 | PT-FI
Income Tax Examination [Line Items]
Tax Assessment	7.0
Penalties and Interest	4.0
Total	$ 11.0