Investments (Unconsolidated Variable Interest Entities) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Total Assets	$ 677,279	$ 663,072
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Total Assets	70,684	66,921
Maximum Exposure to Loss	76,786	72,663
Variable Interest Entity, Not Primary Beneficiary | Fixed Maturity Securities
Variable Interest Entity [Line Items]
Total Assets	54,591	51,422
Maximum Exposure to Loss	54,591	51,422
Variable Interest Entity, Not Primary Beneficiary | Other limited partnership interests
Variable Interest Entity [Line Items]
Total Assets	13,857	13,244
Maximum Exposure to Loss	19,831	18,906
Variable Interest Entity, Not Primary Beneficiary | Other invested assets
Variable Interest Entity [Line Items]
Total Assets	1,251	1,310
Maximum Exposure to Loss	1,328	1,387
Variable Interest Entity, Not Primary Beneficiary | Other Investments
Variable Interest Entity [Line Items]
Total Assets	985	945
Maximum Exposure to Loss	$ 1,036	$ 948