Reserves for Future Policy Benefits and Separate Account Liabilities - Separate Accounts by Major Category of Investment (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items]
Fair value	$ 25,869	$ 34,602
Invested in fixed income securities	18.00%	17.00%
Invested in equity securities	82.00%	83.00%
Equity securities, at fair value
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items]
Fair value	$ 24,548	$ 33,240
Cash
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items]
Fair value	1,321	1,362
GMDB
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items]
Account value	2,983
Deferred Annuitization \| GMDB
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items]
Account value	$ 2,600	$ 3,000

Invested in equity securities.

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Invested in fixed income securities.

+ References

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- Definition

Value of the general accounts corresponding to the specified product, guarantee type and subset of the guarantee.

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Fair value amount of the specified investment category of assets maintained in separate accounts as of the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 80
-Section 50
-Paragraph 1
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=124508989&loc=d3e19393-158473

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 20
-Section 55
-Paragraph 15
-URI https://asc.fasb.org/extlink&oid=124504833&loc=d3e7104-158389

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