Condensed Consolidated Statements of Comprehensive Loss (unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Currency translation adjustments, tax	$ (1)	$ (19)	$ (13)	$ (3)
Pension and other postretirement benefits, tax	0	(2)	7	0
Hedging activities, tax	0	(3)	(1)	0
Discontinued operations, currency translation adjustments, net of tax	0	(11)	0	(15)
Discontinued operations, pension and other postretirement benefits, tax	0	0	(3)	0
Comprehensive income (loss)	$ (33)	$ 325	$ 448	$ (225)

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Continuing Operation, Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax, Parent

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Continuing Operation, Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax

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Discontinued Operations, Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax

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