PROPERTY, PLANT, EQUIPMENT AND MINING DEVELOPMENT COSTS, NET (Schedule of PPE) (Details) - USD ($)	12 Months Ended					156 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 30, 2008	Dec. 31, 2007	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	$ 77,018,000,000	$ 74,883,000,000
Accumulated depreciation, depletion and amortization	(46,673,000,000)	(45,065,000,000)
Property, plant, equipment and mining development costs, net	30,345,000,000	29,818,000,000
Proven and probable reserves [Member]
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	7,142,000,000	7,142,000,000
Transfer From Value Beyond Proven And Probable Reserves To Proven And Probable Reserves	0	100,000				$ 811,000,000
Value beyond proven and probable reserves (VBPP) [Member]
Property, Plant and Equipment [Line Items]
Payments to Acquire Mineral Rights					$ 1,600,000,000
Property, plant, equipment and mining development costs	376,000,000	376,000,000
Property, Plant and Equipment, Transfers and Changes				$ 497,000,000
Mine development and other
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	11,309,000,000	10,686,000,000
Buildings and infrastructure
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	9,412,000,000	9,214,000,000
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	14,399,000,000	14,235,000,000
Mobile equipment
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	4,605,000,000	4,495,000,000
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	2,477,000,000	1,454,000,000
Oil and Gas Properties [Member]
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	27,298,000,000	27,281,000,000
Accumulated depreciation, depletion and amortization	(27,300,000,000)	(27,300,000,000)
Discontinued Operations
Property, Plant and Equipment [Line Items]
Payments to Acquire Mineral Rights					$ 634,000,000
Mining Operations [Member]
Property, Plant and Equipment [Line Items]
Capitalized interest	$ 72,000,000	$ 147,000,000	$ 149,000,000