Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill
Beginning Balance	$ 63	$ 63
Additions	213	0
Ending Balance	276	63
Intangible Assets
Beginning Balance, Cost	0	0
Additions	180	0
Ending Balance, Cost	180	0
Beginning Balance, Accumulated Amortization	0	0
Amortization	(5)	0
Ending Balance, Accumulated Amortization	(5)	0
Net Carrying Amount	175	0	$ 0
Total Goodwill and Other Intangible Assets - Net
Beginning Balance	63	63
Additions	393	0
Amortization	(5)	0
Ending Balance	$ 451	$ 63