Insurance Liabilities - Future Policy Benefits (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021	Dec. 31, 2020
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for future policy benefits	$ 61,539	$ 57,886	$ 57,681	$ 70,643	$ 56,369
Adjustments		0		0
Fortitude RE
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for future policy benefits					11,000
Long-Duration Insurance Contracts
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					1,769
Deferred profit liability					1,698
Unexpired Risk Reserve
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					1,795
Deferred profit liability					248
Individual Retirement
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for future policy benefits	1,311	1,223	1,228	1,373	1,322
Adjustments		0		0
Individual Retirement | Long-Duration Insurance Contracts
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					67
Deferred profit liability					65
Group Retirement
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for future policy benefits	210	211	225	264	279
Adjustments		0		0
Group Retirement | Long-Duration Insurance Contracts
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					8
Deferred profit liability					8
Life Insurance
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for future policy benefits	21,657	21,179	22,500	27,442	14,125
Adjustments		0		0
Life Insurance | Long-Duration Insurance Contracts
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					5
Deferred profit liability					0
Life Insurance | Unexpired Risk Reserve
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					1,661
Deferred profit liability					248
Institutional Markets
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for future policy benefits	15,752	12,464	11,518	13,890	11,630
Adjustments		0		0
Institutional Markets | Long-Duration Insurance Contracts
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					830
Deferred profit liability					766
Institutional Markets | Unexpired Risk Reserve
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					2
Deferred profit liability					0
Other Operations before consolidation and eliminations
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for future policy benefits	$ 20,453	20,429	$ 22,210	27,674	29,013
Adjustments		$ 0		$ 0
Other Operations before consolidation and eliminations | Long-Duration Insurance Contracts
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					859
Deferred profit liability					859
Other Operations before consolidation and eliminations | Unexpired Risk Reserve
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					132
Deferred profit liability					0
Other Operations before consolidation and eliminations | Unexpired Risk Reserve | Fortitude RE
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					2,000
As Previously Reported
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for future policy benefits					45,955
As Previously Reported | Long-Duration Insurance Contracts
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					71
As Previously Reported | Unexpired Risk Reserve
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					1,547
As Previously Reported | Individual Retirement
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for future policy benefits					1,309
As Previously Reported | Individual Retirement | Long-Duration Insurance Contracts
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					2
As Previously Reported | Group Retirement
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for future policy benefits					282
As Previously Reported | Group Retirement | Long-Duration Insurance Contracts
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					0
As Previously Reported | Life Insurance
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for future policy benefits					11,129
As Previously Reported | Life Insurance | Long-Duration Insurance Contracts
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					5
As Previously Reported | Life Insurance | Unexpired Risk Reserve
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					1,413
As Previously Reported | Institutional Markets
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for future policy benefits					11,029
As Previously Reported | Institutional Markets | Long-Duration Insurance Contracts
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					64
As Previously Reported | Institutional Markets | Unexpired Risk Reserve
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					2
As Previously Reported | Other Operations before consolidation and eliminations
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for future policy benefits					22,206
As Previously Reported | Other Operations before consolidation and eliminations | Long-Duration Insurance Contracts
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					0
As Previously Reported | Other Operations before consolidation and eliminations | Unexpired Risk Reserve
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					132
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Change In Deferred Profit Liability
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					(1,698)
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Change In Deferred Profit Liability | Individual Retirement
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					(65)
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Change In Deferred Profit Liability | Group Retirement
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					(8)
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Change In Deferred Profit Liability | Life Insurance
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					0
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Change In Deferred Profit Liability | Institutional Markets
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					(766)
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Change In Deferred Profit Liability | Other Operations before consolidation and eliminations
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					(859)
Effect Of Application Of Accounting Standards Update 2018-12, Adjustments For Loss Contracts Under Modified Retrospective Approach
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					62
Effect Of Application Of Accounting Standards Update 2018-12, Adjustments For Loss Contracts Under Modified Retrospective Approach | Individual Retirement
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					(14)
Effect Of Application Of Accounting Standards Update 2018-12, Adjustments For Loss Contracts Under Modified Retrospective Approach | Group Retirement
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					2
Effect Of Application Of Accounting Standards Update 2018-12, Adjustments For Loss Contracts Under Modified Retrospective Approach | Life Insurance
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					15
Effect Of Application Of Accounting Standards Update 2018-12, Adjustments For Loss Contracts Under Modified Retrospective Approach | Institutional Markets
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					4
Effect Of Application Of Accounting Standards Update 2018-12, Adjustments For Loss Contracts Under Modified Retrospective Approach | Other Operations before consolidation and eliminations
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					55
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Remeasurement Of Liability At Current Single A Rate
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					12,462
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Remeasurement Of Liability At Current Single A Rate | Individual Retirement
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					156
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Remeasurement Of Liability At Current Single A Rate | Group Retirement
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					63
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Remeasurement Of Liability At Current Single A Rate | Life Insurance
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					2,977
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Remeasurement Of Liability At Current Single A Rate | Institutional Markets
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					1,655
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Remeasurement Of Liability At Current Single A Rate | Other Operations before consolidation and eliminations
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					7,611
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Adjustments To The Removal Of Loss Recognition Balances Related To Securities
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					(412)
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Adjustments To The Removal Of Loss Recognition Balances Related To Securities | Individual Retirement
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					(64)
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Adjustments To The Removal Of Loss Recognition Balances Related To Securities | Group Retirement
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					(60)
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Adjustments To The Removal Of Loss Recognition Balances Related To Securities | Life Insurance
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					4
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Adjustments To The Removal Of Loss Recognition Balances Related To Securities | Institutional Markets
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					(292)
Effect Of Application Of Accounting Standards Update 2018-12, Effect Of Adjustments To The Removal Of Loss Recognition Balances Related To Securities | Other Operations before consolidation and eliminations
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					$ 0