ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 5,706
Comprehensive income (loss) before reclassifications	32	$ (28)
Income taxes associated with comprehensive income (loss) before reclassifications	25	(14)
Reclassification from accumulated other comprehensive (loss) income	2	(12)
Income taxes associated with comprehensive income (loss) reclassified into net earnings	(61)	(62)
Ending balance	5,890
Gain (loss) reclassified from AOCI to income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Income taxes associated with comprehensive income (loss) reclassified into net earnings		(1)
Accumulated other comprehensive income (loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,020)	(828)
Ending balance	(961)	(883)
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(882)	(719)
Comprehensive income (loss) before reclassifications	35	(52)
Income taxes associated with comprehensive income (loss) before reclassifications	24	(14)
Reclassification from accumulated other comprehensive (loss) income	0	0
Ending balance	(823)	(785)
Foreign currency translation adjustments \| Gain (loss) reclassified from AOCI to income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Income taxes associated with comprehensive income (loss) reclassified into net earnings		0
Hedge instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(9)	28
Comprehensive income (loss) before reclassifications	(1)	18
Income taxes associated with comprehensive income (loss) before reclassifications	0	0
Reclassification from accumulated other comprehensive (loss) income	4	(10)
Ending balance	(6)	36
Hedge instruments \| Gain (loss) reclassified from AOCI to income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Income taxes associated with comprehensive income (loss) reclassified into net earnings		0
Defined benefit retirement plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(129)	(137)
Comprehensive income (loss) before reclassifications	(2)	6
Income taxes associated with comprehensive income (loss) before reclassifications	1	0
Reclassification from accumulated other comprehensive (loss) income	(2)	(2)
Ending balance	$ (132)	(134)
Defined benefit retirement plans \| Gain (loss) reclassified from AOCI to income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Income taxes associated with comprehensive income (loss) reclassified into net earnings		$ (1)

BORGWARNER INC 10-Q