Separate Account Assets and Liabilities - Separate Account Assets (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Variable Annuity and Insurance Guarantees
Separate account assets	$ 79,753	$ 77,457
Mutual funds
Variable Annuity and Insurance Guarantees
Separate account assets	77,039	74,634
Property/real estate
Variable Annuity and Insurance Guarantees
Separate account assets	1,737	1,784
Equity securities
Variable Annuity and Insurance Guarantees
Separate account assets	551	553
Debt securities
Variable Annuity and Insurance Guarantees
Separate account assets	227	285
Cash and cash equivalents
Variable Annuity and Insurance Guarantees
Separate account assets	148	147
Other
Variable Annuity and Insurance Guarantees
Separate account assets	$ 51	$ 54

Amount of asset at fair value held for benefit of separate account policyholder.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 80
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480078/944-80-55-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(11))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 80
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480141/944-80-45-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 80
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480109/944-80-50-1

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant