Insurance Liabilities - Future Policy Benefits (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Jan. 01, 2021	Dec. 31, 2020
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for future policy benefits	$ 60,386	$ 57,886		$ 56,369
Adjustments		125
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				1,322
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				279
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				14,125
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				11,630
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
Corporate and Other [Member]
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for future policy benefits				$ 29,013
Other reconciling items	$ 1,500	$ 1,600	$ 1,700
Corporate and Other [Member] | Long-Duration Insurance Contracts
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					859
Deferred profit liability					859
Corporate and Other [Member] | Unexpired Risk Reserve
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					132
Deferred profit liability					0
Other reconciling items					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 | Corporate and Other [Member]
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for future policy benefits					22,206
As Previously Reported | Corporate and Other [Member] | Long-Duration Insurance Contracts
Liability for Future Policy Benefit, by Product Segment [Line Items]
Deferred profit liability before reinsurance					0
As Previously Reported | Corporate and Other [Member] | 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 | Corporate and Other [Member]
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 | Corporate and Other [Member]
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 | Corporate and Other [Member]
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 | Corporate and Other [Member]
Liability for Future Policy Benefit, by Product Segment [Line Items]
Adjustments					$ 0