Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 3,761	$ 3,457	$ 3,601	$ 3,508
Other comprehensive (loss) income:
Total Other comprehensive (loss) income, net of tax	(2)	(128)	33	(129)
Ending balance	3,775	3,421	3,775	3,421
Accumulated other comprehensive loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,806)	(1,864)	(1,841)	(1,863)
Other comprehensive (loss) income:
Total Other comprehensive (loss) income, net of tax	(2)	(128)	33	(129)
Ending balance	(1,808)	(1,992)	(1,808)	(1,992)
Pension and other postretirement benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(648)	(789)	(653)	(799)
Other comprehensive (loss) income:
Other comprehensive (loss) income, before reclassifications, before tax	(3)	15	0	16
Tax income benefit (expense)	1	(3)	0	(3)
Total Other comprehensive (loss) income before reclassifications, net of tax	(2)	12	0	13
Net amount reclassified to earnings	8	13	12	25
Tax benefit (expense)	(2)	(3)	(3)	(6)
Total amount reclassified from Accumulated other comprehensive income (loss), net of tax	6	10	9	19
Total Other comprehensive (loss) income, net of tax	4	22	9	32
Ending balance	(644)	(767)	(644)	(767)
Foreign currency translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,159)	(1,093)	(1,193)	(1,062)
Other comprehensive (loss) income:
Total Other comprehensive (loss) income, net of tax	4	(114)	38	(145)
Ending balance	(1,155)	(1,207)	(1,155)	(1,207)
Cash flow hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	1	18	5	(2)
Other comprehensive (loss) income:
Other comprehensive (loss) income, before reclassifications, before tax	(10)	(36)	(14)	(11)
Tax income benefit (expense)	2	8	3	2
Total Other comprehensive (loss) income before reclassifications, net of tax	(8)	(28)	(11)	(9)
Net amount reclassified to earnings	(3)	(11)	(4)	(10)
Tax benefit (expense)	1	3	1	3
Total amount reclassified from Accumulated other comprehensive income (loss), net of tax	(2)	(8)	(3)	(7)
Total Other comprehensive (loss) income, net of tax	(10)	(36)	(14)	(16)
Ending balance	$ (9)	$ (18)	$ (9)	$ (18)