INCOME TAX 4 (Details)	Dec. 31, 2020 USD ($)
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 3,252,000,000
Tax Credit Carryforward, Amount	224,000,000
U.S. Federal | 2040 [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	24,000,000
Tax Credit Carryforward, Amount	92,000,000
Foreign Tax Authority [Member] | Indefinite [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	2,532,000,000
Tax Credit Carryforward, Amount	0
Foreign Tax Authority [Member] | 2040 [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	314,000,000
Tax Credit Carryforward, Amount	111,000,000
U.S. State | 2040 [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	382,000,000
Tax Credit Carryforward, Amount	$ 21,000,000