Amount of liability for variable contract in which all or portion of contract holder's funds is allocated to specific separate account and supported by assets held in separate account.

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Name:	us-gaap_SeparateAccountsLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Separate Account Liabilities Balance Sheet (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025	Jun. 30, 2025
Separate Account, Liability [Line Items]
Separate account liabilities	$ 73,224	$ 73,511
Stable Value and Risk Solutions
Separate Account, Liability [Line Items]
Separate account liabilities	27,134	27,605	$ 28,911
Group annuities
Separate Account, Liability [Line Items]
Separate account liabilities	18,169	18,099	17,838
Variable Annuity
Separate Account, Liability [Line Items]
Separate account liabilities	19,190	19,554	$ 20,253
Insurance, Other
Separate Account, Liability [Line Items]
Separate account liabilities	$ 8,731	$ 8,253