CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
OPERATING ACTIVITIES OF CONTINUING OPERATIONS
Net cash provided by operating activities of continuing operations (see Note 23)	$ 661	$ 344
INVESTING ACTIVITIES OF CONTINUING OPERATIONS
Capital expenditures, including tooling outlays	(196)	(355)
Customer advances related to capital expenditures	7	0
Proceeds from settlement of net investment hedges, net	8	36
Payments for investments in equity securities, net	0	(4)
Proceeds from the sale of business, net	7	8
Proceeds from asset disposals and other, net	16	2
Net cash used in investing activities from continuing operations	(158)	(313)
FINANCING ACTIVITIES OF CONTINUING OPERATIONS
Payments of notes payable	(5)	0
Additions to debt	0	2
Repayments of debt, including current portion	(403)	(15)
Payments for purchase of treasury stock	(108)	(100)
Payments for stock-based compensation items	(18)	(23)
Payments for contingent consideration	(4)	(1)
Dividends paid to BorgWarner stockholders	(48)	(50)
Dividends paid to noncontrolling stockholders	(20)	(55)
Net cash used in financing activities from continuing operations	(606)	(242)
CASH FLOWS FROM DISCONTINUED OPERATIONS
Operating activities of discontinued operations	0	(18)
Net cash used in discontinued operations	0	(18)
Effect of exchange rate changes on cash	50	(17)
Net decrease in cash, cash equivalents and restricted cash	(53)	(246)
Cash and cash equivalents at beginning of year	2,094	1,534
Cash, cash equivalents and restricted cash of continuing operations at end of period	$ 2,041	$ 1,288