Investments (Variable Interest Entities) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Carrying amount	$ 216,151	$ 247,255
VIE, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Carrying amount	19,904	19,992
Maximum exposure to loss	22,812	20,760
VIE, Not Primary Beneficiary | Fixed maturity securities
Variable Interest Entity [Line Items]
Carrying amount	15,781	16,326
Maximum exposure to loss	17,334	15,659
VIE, Not Primary Beneficiary | Limited partnerships and LLCs
Variable Interest Entity [Line Items]
Carrying amount	4,123	3,666
Maximum exposure to loss	$ 5,478	$ 5,101