Leases (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Leases [Abstract]
Operating leases	$ 21	$ 23
Short-term leases	0	0
Lease expense	21	23
Less: sublease income	0	0
Net lease cost	21	23
Cash payments to settle a lease liability reported in cash flows	24	26
Right-of-use assets obtained in exchange for new lease liabilities	$ 2	$ 12
Weighted average discount rate (percent)	2.23%	2.46%
Weighted average remaining lease term (in years)	4 years 9 months 18 days	4 years 10 months 24 days