Restructuring and Other Charges - Activity and Reserve Balances for Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	$ 19
Cash payments	(4)
Restructuring charges	2	$ 9
Other	(1)
Restructuring reserve ending balance	16
Settlement charges	(1)	(3)
Pension benefits
Restructuring Reserve [Roll Forward]
Restructuring charges	1	3
Settlement charges	(1)	$ (3)
Layoff costs
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	17
Cash payments	(2)
Restructuring charges	0
Other	(1)
Restructuring reserve ending balance	14
Other exit costs
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	2
Cash payments	(2)
Restructuring charges	2
Other	0
Restructuring reserve ending balance	$ 2