CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
OPERATING
Net cash provided by operating activities	$ 764	$ 808
INVESTING
Capital expenditures, including tooling outlays	(494)	(262)
Capital expenditures for damage to property, plant and equipment	(2)	(18)
Insurance proceeds received for damage to property, plant and equipment	5	23
Payments for businesses acquired, net of cash and restricted cash acquired	(759)	(2)
Proceeds from settlement of net investment hedges, net	21	12
Payments for investments in equity securities	(15)	(2)
Proceeds from asset disposals and other, net	6	0
Net cash used in investing activities	(1,238)	(249)
FINANCING
Net (decrease) increase in notes payable	(8)	6
Additions to debt	1,273	1,163
Payments for debt issuance costs	(10)	(11)
Repayments of debt, including current portion	(698)	(308)
Payments for stock-based compensation items	(14)	(13)
Purchase of noncontrolling interest	(33)	0
Dividends paid to BorgWarner stockholders	(122)	(105)
Dividends paid to noncontrolling stockholders	(38)	(21)
Net cash provided by financing activities	350	711
Effect of exchange rate changes on cash	(16)	19
Net (decrease) increase in cash, cash equivalents and restricted cash	(140)	1,289
Cash and cash equivalents at beginning of year	1,650	832
Cash, cash equivalents and restricted cash at end of period	$ 1,510	$ 2,121