CONTINGENCIES (Tax Matters by Tax Year) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended	21 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Dec. 21, 2018
Cerro Verde
Income Tax Examination [Line Items]
Total	$ 700.0	$ 700.0
PT-FI
Income Tax Examination [Line Items]
Total	$ 900.0	$ 900.0
Progressive export duty on copper concentrates, higher threshold, percent	5.00%	5.00%	7.50%
SUNAT | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment	$ 321.0	$ 321.0
Penalties and Interest	476.0	476.0
Total	797.0	797.0
SUNAT | 2003 to 2008 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment	48.0	48.0
Penalties and Interest	130.0	130.0
Total	178.0	178.0
SUNAT | 2009 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment	56.0	56.0
Penalties and Interest	52.0	52.0
Total	108.0	108.0
SUNAT | 2010 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment	54.0	54.0
Penalties and Interest	125.0	125.0
Total	179.0	179.0
SUNAT | 2011 and 2012 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment	42.0	42.0
Penalties and Interest	73.0	73.0
Total	115.0	115.0
SUNAT | 2013 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment	48.0	48.0
Penalties and Interest	66.0	66.0
Total	114.0	114.0
SUNAT | Tax Year 2014 to Tax Year 2017 | Cerro Verde
Income Tax Examination [Line Items]
Tax Assessment	73.0	73.0
Penalties and Interest	30.0	30.0
Total	103.0	103.0
Indonesia Tax Authority | PT-FI
Income Tax Examination [Line Items]
Tax Assessment	520.0	520.0
Penalties and Interest	430.0	430.0
Total	950.0	950.0
Indonesia Tax Authority | 2005 | PT-FI
Income Tax Examination [Line Items]
Tax Assessment	62.0	62.0
Penalties and Interest	29.0	29.0
Total	91.0	91.0
Indonesia Tax Authority | 2007 | PT-FI
Income Tax Examination [Line Items]
Tax Assessment	45.0	45.0
Penalties and Interest	22.0	22.0
Total	67.0	67.0
Indonesia Tax Authority | 2012 and 2013 | PT-FI
Income Tax Examination [Line Items]
Tax Assessment	41.0	41.0
Penalties and Interest	41.0	41.0
Total	82.0	82.0
Indonesia Tax Authority | 2014 and 2015 | PT-FI
Income Tax Examination [Line Items]
Tax Assessment	108.0	108.0
Penalties and Interest	0.0	0.0
Total	108.0	108.0
Indonesia Tax Authority | 2016 | PT-FI
Income Tax Examination [Line Items]
Tax Assessment	257.0	257.0
Penalties and Interest	336.0	336.0
Total	593.0	593.0
Indonesia Tax Authority | 2017 | PT-FI
Income Tax Examination [Line Items]
Tax Assessment	7.0	7.0
Penalties and Interest	2.0	2.0
Total	$ 9.0	$ 9.0