CONTINGENCIES (Tax Matters by Tax Year) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2023
Income Tax Examination [Line Items]
Export Duties, Construction in Progress, Threshold		50.00%
Cerro Verde
Income Tax Examination [Line Items]
Total		$ 712.0
PT-FI
Income Tax Examination [Line Items]
Total		$ 301.0
Progressive export duty on copper concentrates, higher threshold, percent	5.00%	5.00%
SUNAT | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment		$ 328.0
Penalties and Interest		492.0
Total		820.0
SUNAT | 2003 to 2008 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment		47.0
Penalties and Interest		130.0
Total		177.0
SUNAT | 2009 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment		56.0
Penalties and Interest		52.0
Total		108.0
SUNAT | 2010 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment		54.0
Penalties and Interest		126.0
Total		180.0
SUNAT | 2011 and 2012 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment		42.0
Penalties and Interest		77.0
Total		119.0
SUNAT | 2013 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment		48.0
Penalties and Interest		72.0
Total		120.0
SUNAT | Tax Year 2014 to Tax Year 2017 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment		81.0
Penalties and Interest		35.0
Total		116.0
Indonesia Tax Authority | PT-FI
Income Tax Examination [Line Items]
Tax Assessment		258.0
Penalties and Interest		90.0
Total		348.0
Indonesia Tax Authority | 2005 | PT-FI
Income Tax Examination [Line Items]
Tax Assessment		62.0
Penalties and Interest		29.0
Total		91.0
Indonesia Tax Authority | 2007 | PT-FI
Income Tax Examination [Line Items]
Tax Assessment		45.0
Penalties and Interest		22.0
Total		67.0
Indonesia Tax Authority | 2012 and 2013 | PT-FI
Income Tax Examination [Line Items]
Tax Assessment		40.0
Penalties and Interest		36.0
Total		76.0
Indonesia Tax Authority | 2014 and 2015 | PT-FI
Income Tax Examination [Line Items]
Tax Assessment		104.0
Penalties and Interest		0.0
Total		104.0
Indonesia Tax Authority | 2017 | PT-FI
Income Tax Examination [Line Items]
Tax Assessment		7.0
Penalties and Interest		3.0
Total		$ 10.0