CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
OPERATING
Net cash provided by operating activities	$ 1,184	$ 1,008	$ 1,126
INVESTING
Capital expenditures, including tooling outlays	(441)	(481)	(546)
Insurance proceeds received for damage to property, plant and equipment	20	0	0
Capital expenditures for damage to property, plant and equipment	(20)	0	0
Payments for investments in equity securities	(2)	(53)	(6)
Payments for businesses acquired, net of cash acquired	(449)	(10)	0
Proceeds from sale of businesses, net of cash divested	0	24	0
Proceeds from settlement of net investment hedges, net	10	22	2
Proceeds from asset disposals and other, net	16	9	36
Net cash used in investing activities	(866)	(489)	(514)
FINANCING
Net increase (decrease) in notes payable	8	0	(34)
Additions to debt	1,178	63	59
Repayments of debt, including current portion	(331)	(204)	(66)
Payments for debt issuance cost	(10)	0	0
Payments for purchase of treasury stock	(216)	(100)	(150)
Payments for stock-based compensation items	(13)	(15)	(15)
Capital contribution from noncontrolling interest	4	4	0
Dividends paid to BorgWarner stockholders	(146)	(140)	(142)
Dividends paid to noncontrolling stockholders	(37)	(28)	(35)
Net cash provided by (used in) financing activities	437	(420)	(383)
Effect of exchange rate changes on cash	63	(6)	(35)
Net increase in cash and cash equivalents	818	93	194
Cash and restricted cash at beginning of period	832	739	545
Cash and restricted cash at end of period	$ 1,650	$ 832	$ 739