Leases (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Leases [Abstract]
Operating leases	$ 21	$ 22	$ 42	$ 45
Short-term leases	1	1	1	1
Lease expense	22	23	43	46
Less: sublease income	0	0	0	0
Net lease cost	22	23	43	46
Cash payments to settle a lease liability reported in cash flows	24	27	48	53
Right-of-use assets obtained in exchange for new lease liabilities	$ 5	$ 7	$ 7	$ 19
Weighted average discount rate (percent)	2.27%	2.41%	2.27%	2.41%
Weighted average remaining lease term (in years)	4 years 7 months 6 days	4 years 9 months 18 days	4 years 7 months 6 days	4 years 9 months 18 days