Investments (Variable Interest Entities) (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Variable Interest Entity [Line Items]
Carrying amount	$ 225,221	$ 228,591
VIE, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Carrying amount	18,402	18,471
Maximum exposure to loss	20,313	20,595
VIE, Not Primary Beneficiary | Fixed maturity securities
Variable Interest Entity [Line Items]
Carrying amount	14,149	14,248
Maximum exposure to loss	15,054	15,330
VIE, Not Primary Beneficiary | Limited partnerships and LLCs
Variable Interest Entity [Line Items]
Carrying amount	4,253	4,223
Maximum exposure to loss	$ 5,259	$ 5,265