INCOME TAXES - ADDITIONAL INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Line Items]
Tax credit carryforwards	$ 1,025
Tax loss carryforward	1,278
Deferred tax assets, operating loss carryforward	232
Deferred tax assets, tax attributes	48
Translation Adjustment	214
Change in valuation allowance for deferred tax asset	16
Withholding taxes on certain undistributed earnings of foreign subsidiaries anticipated to be repatriated	6
The total gross unrecognized tax benefits	31
Unrecognized tax benefits, if recognized, would affect the effective income tax rate	30
The total amount of accrued interest and penalties	4	$ 3
Recognized income tax expense (benefits), interest and penalties	2	2	$ 1
Undistributed earnings of foreign subsidiaries	1,807	$ 1,575
Foreign Tax Credits Expiring Future Years
Income Taxes [Line Items]
Tax credit carryforwards	57
Foreign Tax Credits Expiring Future Years | Tax Year 2024
Income Taxes [Line Items]
Tax credit carryforwards	8
Foreign Tax Credits Expiring Future Years | Tax Year 2025
Income Taxes [Line Items]
Tax credit carryforwards	39
Foreign Tax Credits Expiring Future Years | Tax Years 2027 through 2030
Income Taxes [Line Items]
Tax credit carryforwards	10
Without Expiry Date
Income Taxes [Line Items]
Tax credit carryforwards	253
Foreign
Income Taxes [Line Items]
Tax credit valuation allowance	57
Settlement with Taxing Authority
Income Taxes [Line Items]
Unrecognized tax benefits, if recognized, would affect the effective income tax rate	5
Possible benefit of unrecognized tax benefits	$ 6