Investments (Variable Interest Entities) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Carrying amount	$ 233,506	$ 247,255
VIE, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Carrying amount	19,623	19,992
Maximum exposure to loss	21,153	20,760
VIE, Not Primary Beneficiary | Fixed maturity securities
Variable Interest Entity [Line Items]
Carrying amount	15,748	16,326
Maximum exposure to loss	15,912	15,659
VIE, Not Primary Beneficiary | Limited partnerships and LLCs
Variable Interest Entity [Line Items]
Carrying amount	3,875	3,666
Maximum exposure to loss	$ 5,241	$ 5,101