Investments (Variable Interest Entities) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Variable Interest Entity [Line Items]
Carrying amount	$ 228,591	$ 226,204
VIE, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Carrying amount	18,471	19,606
Maximum exposure to loss	20,595	21,853
VIE, Not Primary Beneficiary | Fixed maturity securities
Variable Interest Entity [Line Items]
Carrying amount	14,248	15,386
Maximum exposure to loss	15,330	16,611
VIE, Not Primary Beneficiary | Limited partnerships and LLCs
Variable Interest Entity [Line Items]
Carrying amount	4,223	4,220
Maximum exposure to loss	$ 5,265	$ 5,242