Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 4,086	$ 3,761	$ 4,037	$ 3,601
Other comprehensive income (loss):
Total Other comprehensive income (loss), net of tax	3	(2)	(28)	33
Ending balance	4,277	3,775	4,277	3,775
Accumulated other comprehensive loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,861)	(1,806)	(1,830)	(1,841)
Other comprehensive income (loss):
Total Other comprehensive income (loss), net of tax	3	(2)	(28)	33
Ending balance	(1,858)	(1,808)	(1,858)	(1,808)
Pension and other postretirement benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(686)	(648)	(689)	(653)
Other comprehensive income (loss):
Unrecognized net actuarial (loss) gain and prior service cost/benefit and net change from periodic revaluations	0	(3)	(1)	0
Tax (expense) benefit	0	1	0	0
Total Other comprehensive income (loss) before reclassifications, net of tax	0	(2)	(1)	0
Amortization of net actuarial loss and prior service cost and net amount reclassified to earnings	5	8	10	12
Tax benefit (expense)	(1)	(2)	(2)	(3)
Total amount reclassified from Accumulated other comprehensive (loss) income, net of tax	4	6	8	9
Total Other comprehensive income (loss), net of tax	4	4	7	9
Ending balance	(682)	(644)	(682)	(644)
Foreign currency translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,173)	(1,159)	(1,136)	(1,193)
Other comprehensive income (loss):
Total Other comprehensive income (loss), net of tax	(4)	4	(41)	38
Ending balance	(1,177)	(1,155)	(1,177)	(1,155)
Cash flow hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(2)	1	(5)	5
Other comprehensive income (loss):
Unrecognized net actuarial (loss) gain and prior service cost/benefit and net change from periodic revaluations	4	(10)	3	(14)
Tax (expense) benefit	(1)	2	(1)	3
Total Other comprehensive income (loss) before reclassifications, net of tax	3	(8)	2	(11)
Amortization of net actuarial loss and prior service cost and net amount reclassified to earnings	0	(3)	5	(4)
Tax benefit (expense)	0	1	(1)	1
Total amount reclassified from Accumulated other comprehensive (loss) income, net of tax	0	(2)	4	(3)
Total Other comprehensive income (loss), net of tax	3	(10)	6	(14)
Ending balance	$ 1	$ (9)	$ 1	$ (9)