Insurance Liabilities - Schedule of policyholder contract deposits (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Liability for Future Policy Benefit, by Product Segment [Line Items]
Policyholder contract deposits	$ 158,891	$ 156,686
Individual Retirement
Liability for Future Policy Benefit, by Product Segment [Line Items]
Policyholder contract deposits	90,069	87,664
Group Retirement
Liability for Future Policy Benefit, by Product Segment [Line Items]
Policyholder contract deposits	43,332	44,087
Life Insurance
Liability for Future Policy Benefit, by Product Segment [Line Items]
Policyholder contract deposits	10,258	10,298
Institutional Markets
Liability for Future Policy Benefit, by Product Segment [Line Items]
Policyholder contract deposits	11,643	10,810
Fortitude RE
Liability for Future Policy Benefit, by Product Segment [Line Items]
Policyholder contract deposits	$ 3,589	$ 3,827