Goodwill & Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Millions	May 28, 2020	Dec. 31, 2021	Dec. 31, 2020
Amortized Intangible Assets:
Finite-Lived Intangible Assets, Gross		$ 1,274	$ 1,274
Accumulated Amortization		(511)	(419)
Net Carrying Amount		763	855
Total Indefinite Life Intangible Assets		95	95
Total Other Intangible Assets		1,369	1,369
Total Other Intangible Assets		858	950
Value of in-force contracts
Amortized Intangible Assets:
Finite-Lived Intangible Assets, Gross		203	203
Accumulated Amortization		(194)	(172)
Net Carrying Amount		9	31
Customer relationships
Amortized Intangible Assets:
Finite-Lived Intangible Assets, Gross		636	636
Accumulated Amortization		(177)	(134)
Net Carrying Amount		459	502
Marketing agreement with Aetna
Amortized Intangible Assets:
Finite-Lived Intangible Assets, Gross		16	16
Accumulated Amortization		(4)	(3)
Net Carrying Amount		12	13
Distribution Agreement [1]
Amortized Intangible Assets:
Finite-Lived Intangible Assets, Gross		79	79
Accumulated Amortization		(68)	(65)
Net Carrying Amount		11	14
Finite-Lived Intangible Asset, Useful Life	6 years 6 months
Distribution and Agency relationships & Other
Amortized Intangible Assets:
Finite-Lived Intangible Assets, Gross		340	340
Accumulated Amortization		(68)	(45)
Net Carrying Amount		$ 272	$ 295