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Statutory Information and Restrictions (Effects on statutory surplus compared to NAIC statutory surplus) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
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	$ 14	$ 24
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	(44)	(49)
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)
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	(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	1,897	1,947
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	1,640	1,648
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	$ 452	$ 419

X

- Definition

Amount of an item which resulted in a difference from applying state prescribed or permitted statutory accounting practices rather than statutory accounting practices prescribed by National Association of Insurance Commissioners.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 505
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24746-158529

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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