Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating leases	$ 89	$ 95
Short-term leases	1	2
Lease expense	90	97
Less: sublease income	0	0
Net lease cost	90	97
Cash payments to settle a lease liability reported in cash flows	104	109
Right-of-use assets obtained in exchange for new lease liabilities	$ 59	$ 67
Weighted average discount rate (percent)	2.25%	2.51%
Weighted average remaining lease term (in years)	4 years 10 months 24 days	5 years