Discontinued Operations and Disposal Groups, Including Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Disposal Group, Including Discontinued Operations [Line Items]
Assets held for sale	$ 901		$ 901		$ 864
Liabilities held for sale	180		180		176
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	318	$ 57	370	$ 103
Discontinued Operations, Disposed of by Sale \| Hartford Funds Management Group, Inc
Disposal Group, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents	515		515		473
Disposal Group, Including Discontinued Operation, Goodwill	272		272		272
Disposal Group, Including Discontinued Operation, Other Assets	114		114		119
Assets held for sale	901		901		864
Disposal Group, Including Discontinued Operation, Deferred Tax Liabilities	32		32		32
Disposal Group, Including Discontinued Operation, Other Liabilities	148		148		144
Liabilities held for sale	180		180		$ 176
Disposal Group, Including Discontinued Operations, Fee Income	295	256	578	516
Disposal Group, Including Discontinued Operations, Net Investment Income	5	6	10	10
Disposal Groups, Including Discontinued Operations, Realized Investment Gains (Losses)	7	9	5	9
Disposal Group, Including Discontinued Operation, Revenue	307	271	593	535
Disposal Group, Including Discontinued Operation, Operating Expense	222	199	441	404
Disposal Group, Including Discontinued Operations, Expenses	222	199	441	404
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax	85	72	152	131
Discontinued Operation, Tax Effect of Income (Loss) from Discontinued Operation During Phase-out Period	(233)	15	(218)	28
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	$ 318	$ 57	370	103
Cash Provided by (Used in) Operating Activity, Discontinued Operation			95	86
Cash Provided by (Used in) Investing Activity, Discontinued Operation			$ (10)	$ (3)

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