OTHER LIABILITIES, INCLUDING EMPLOYEE BENEFITS (Restructuring Charges) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Selling, general and administrative expenses	$ 414	$ 443	$ 477
One-time Termination Benefits
Restructuring Cost and Reserve [Line Items]
Production and delivery			120
Selling, general and administrative expenses			5
Foreign Plan [Member]
Restructuring Cost and Reserve [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment			(4)
Indonesia | Operating Segments | Grasberg Segment [Member]
Restructuring Cost and Reserve [Line Items]
Selling, general and administrative expenses	$ 125	$ 123	$ 126