Separate Accounts - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Schedule Of Fees Charged To Separate Accounts [Line Items]
Separate account assets	$ 139,504	$ 144,634
Pass Through Separate Accounts
Schedule Of Fees Charged To Separate Accounts [Line Items]
Separate account assets	113,600	115,600
Separate Accounts With Minimum Return Or Account Value
Schedule Of Fees Charged To Separate Accounts [Line Items]
Separate account assets	$ 25,900	$ 29,000
Funding Agreements and Participating Close Out Contracts Included in Separate Accounts with a Guaranteed Minimum Return or Account Value
Schedule Of Fees Charged To Separate Accounts [Line Items]
Average interest rate credited on separate accounts with a guaranteed minimum return or account value	2.60%	2.60%