INCOME TAXES - Narrative (Details) - USD ($) $ in Millions		3 Months Ended		12 Months Ended
	Oct. 30, 2019	Jun. 30, 2021	Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Loss Carryforwards [Line Items]
Effective income tax rate reconciliation (in percent)				19.00%	41.00%	37.00%
Tax holiday, tax benefit				$ 76	$ 36	$ 26
Foreign rate differentials				36	21	35
Tax adjustment				34
Tax benefit associated with tax holiday				28
Net tax on remittance of foreign earnings			$ 49	43	93	22
Valuation allowance adjustments, net				39	53	(2)
Effective income tax rate reconciliation, tax credit, foreign, amount						(22)
Effective income tax rate reconciliation, global realignment plan					11
Effective income tax rate reconciliation, other adjustments, amount					8
Effective income tax rate reconciliation, deduction, other postretirement expense, amount					6
Interest expense				16	21	15
Payment for penalties and interest accrued				51	69
Unrecognized tax benefits that would impact effective tax rate				242
Unrecognized tax benefits				221	231	$ 146	$ 120
Operating loss carryforwards, state and local				$ 619
Income tax holiday, expiration term of subsidiaries				3 years
Deferred tax liabilities, undistributed foreign earnings				$ 146	156
Deferred tax liability not reported, undistributed earnings of foreign subsidiaries				1,100
Amount of unrecognized deferred tax liability				70
Tax benefit associated with restructuring					19
Other current liabilities
Operating Loss Carryforwards [Line Items]
Unrecognized tax benefits				21
BorgWarner Morse TEC LLC
Operating Loss Carryforwards [Line Items]
Tax expense on derecognition of subsidiary	$ 173
Non-U.S. Tax Jurisdiction
Operating Loss Carryforwards [Line Items]
Tax holiday, tax benefit				55
Foreign rate differentials		$ 20
Tax adjustment				36
Operating loss carryforwards				2,400
Operating loss carryforwards, subject to expiration				1,500
Operating loss carryforwards, not subject to expiration				870
Operating loss carryforwards, valuation allowance				474
Income tax holiday, aggregate dollar amount				76	$ 36
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, valuation allowance				16
Tax credit carryforwards, other				28
Tax credit carryforward, valuation allowance				$ 28