Investments (Variable Interest Entities) (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Variable Interest Entity [Line Items]
Carrying amount	$ 234,738	$ 228,591
VIE, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Carrying amount	17,722	18,471
Maximum exposure to loss	19,334	20,595
VIE, Not Primary Beneficiary | Fixed maturity securities
Variable Interest Entity [Line Items]
Carrying amount	13,434	14,248
Maximum exposure to loss	14,098	15,330
VIE, Not Primary Beneficiary | Limited partnerships and LLCs
Variable Interest Entity [Line Items]
Carrying amount	4,288	4,223
Maximum exposure to loss	$ 5,236	$ 5,265