Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Other intangible assets:
Estimated Fair Value	$ 192	$ 192
Accumulated Amortization	38	32
Net Carrying Amount	154	160
Customer relationships
Other intangible assets:
Estimated Fair Value	135	135
Accumulated Amortization	20	16
Net Carrying Amount	115	119
Other
Other intangible assets:
Estimated Fair Value	57	57
Accumulated Amortization	18	16
Net Carrying Amount	$ 39	$ 41