Separate Account Assets and Liabilities - Rollforward of the Separate Account Balance for Variable Annuities (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Separate Account, Liability [Roll Forward]
Balance as of beginning of period	$ 219,656
Balance as of end of period, gross	229,088	$ 219,656
Total Variable Annuities
Separate Account, Liability [Roll Forward]
Balance as of beginning of period	219,381	195,550
Deposits	4,787	8,545
Surrenders, withdrawals and benefits	(12,417)	(17,029)
Net transfer from (to) general account	164	1,256
Investment performance	18,284	33,807
Policy charges and other	(1,397)	(2,748)
Balance as of end of period, gross	228,802	219,381
Cash surrender value	$ 223,944	$ 214,395