Leases (Supplemental Balance Sheet Information Related to Leases) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating lease right-of-use assets	$ 21	$ 22
Less lease incentives	(5)	(5)
Operating lease right-of-use assets, net	16	17
Other accrued liabilities	4	4
Operating lease liabilities	18	19
Total operating lease liabilities	$ 22	$ 23