Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ 3,508
Other comprehensive (loss) income:
Total Other comprehensive (loss) income, net of tax	$ (119)	$ (27)	(248)	$ 32
Ending balance	3,273		3,273
Accumulated other comprehensive loss
Other comprehensive (loss) income:
Total Other comprehensive (loss) income, net of tax	(119)	(27)	(248)	32
Ending balance	(2,111)	(1,911)	(2,111)	(1,911)
Pension and other postretirement benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(767)	(903)	(799)	(980)
Other comprehensive (loss) income:
Unrecognized net actuarial gain and prior service cost/benefit	(3)	1	13	68
Tax (expense) benefit	0	0	(3)	(15)
Total Other comprehensive (loss) income before reclassifications, net of tax	(3)	1	10	53
Amortization of net actuarial loss and prior service cost	13	15	38	46
Tax benefit (expense)	(3)	(3)	(9)	(9)
Total amount reclassified from Accumulated other comprehensive income (loss), net of tax	10	12	29	37
Total Other comprehensive (loss) income, net of tax	7	13	39	90
Ending balance	(760)	(890)	(760)	(890)
Foreign currency translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,207)	(992)	(1,062)	(966)
Other comprehensive (loss) income:
Total Other comprehensive (loss) income, net of tax	(128)	(36)	(273)	(62)
Ending balance	(1,335)	(1,028)	(1,335)	(1,028)
Cash flow hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(18)	11	(2)	3
Other comprehensive (loss) income:
Unrecognized net actuarial gain and prior service cost/benefit	(6)	1	(17)	20
Tax (expense) benefit	2	0	4	(4)
Total Other comprehensive (loss) income before reclassifications, net of tax	(4)	1	(13)	16
Amortization of net actuarial loss and prior service cost	9	(7)	(1)	(15)
Tax benefit (expense)	(3)	2	0	3
Total amount reclassified from Accumulated other comprehensive income (loss), net of tax	6	(5)	(1)	(12)
Total Other comprehensive (loss) income, net of tax	2	(4)	(14)	4
Ending balance	$ (16)	$ 7	$ (16)	$ 7