OTHER OPERATING EXPENSE, NET - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Other Income and Expenses [Abstract]
Merger, acquisition and divestiture expense, net	$ 9	$ 15	$ 32	$ 28

Transaction related expenses including merger, acquisition and divestiture

No definition available.

Name:	bwa_MergerAcquisitionAndDivestitureExpense
Namespace Prefix:	bwa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration