Leases (Supplemental Lease Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating cash flows from operating leases	$ 83	$ 75	$ 73
Operating leases	$ 109	$ 64	$ 33
Operating leases	7 years	7 years
Operating leases	2.20%	2.50%