Statutory Information and Restrictions (Effects on statutory surplus compared to NAIC statutory surplus) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Calculation of reserves using the Indiana universal life method [Member]
Statutory Accounting Practices [Line Items]
Effects on statutory surplus compared to NAIC statutory surplus from the use of prescribed and permitted practices	$ 6	$ 14
Conservative valuation rate on certain variable annuities [Member]
Statutory Accounting Practices [Line Items]
Effects on statutory surplus compared to NAIC statutory surplus from the use of prescribed and permitted practices	(40)	(44)
Calculation of reserves using continuous CARVM [Member]
Statutory Accounting Practices [Line Items]
Effects on statutory surplus compared to NAIC statutory surplus from the use of prescribed and permitted practices		(1)
Conservative Reg 213 reserves on VA contracts [Member]
Statutory Accounting Practices [Line Items]
Effects on statutory surplus compared to NAIC statutory surplus from the use of prescribed and permitted practices	(27)
Derivative instruments and equity indexed reserves [Member]
Statutory Accounting Practices [Line Items]
Effects on statutory surplus compared to NAIC statutory surplus from the use of prescribed and permitted practices	(113)	(100)
Lesser of LOC and XXX additional reserve as surplus [Member]
Statutory Accounting Practices [Line Items]
Effects on statutory surplus compared to NAIC statutory surplus from the use of prescribed and permitted practices	1,847	1,897
LLC Notes And Variable Value Surplus Notes [Member]
Statutory Accounting Practices [Line Items]
Effects on statutory surplus compared to NAIC statutory surplus from the use of prescribed and permitted practices	1,616	1,640
Excess Of Loss Reinsurance Treaties [Member]
Statutory Accounting Practices [Line Items]
Effects on statutory surplus compared to NAIC statutory surplus from the use of prescribed and permitted practices	$ 493	$ 452