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	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025
Separate Account, Liability [Line Items]
Separate account liabilities	$ 71,428	$ 73,511
Stable Value and Risk Solutions
Separate Account, Liability [Line Items]
Separate account liabilities	27,645	27,605	$ 30,290
Group annuities
Separate Account, Liability [Line Items]
Separate account liabilities	17,706	18,099	17,721
Variable Annuity
Separate Account, Liability [Line Items]
Separate account liabilities	18,285	19,554	$ 19,735
Insurance, Other
Separate Account, Liability [Line Items]
Separate account liabilities	$ 7,792	$ 8,253