Consolidated Investment Entities - Limited Partnerships (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Total assets	$ 166,934	$ 169,051
VIEs, Not Primary Beneficiary | Fixed maturities, available-for-sale, including securities pledged
Variable Interest Entity [Line Items]
Total assets	396	377
Maximum exposure to loss	396	377
VIEs, Not Primary Beneficiary | Limited partnership/corporations
Variable Interest Entity [Line Items]
Total assets	1,376	1,290
Maximum exposure to loss	$ 1,376	$ 1,290