Adoption of ASU 2018-12 - Summary of Changes in DFEL (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred front-end loads	$ 5,901	$ 5,091		$ 3,591
UL and Other
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred front-end loads	5,579	4,766	$ 3,934	3,298
Variable Annuities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred front-end loads	$ 278	286	$ 291	293
As Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred front-end loads		5,708		401
As Previously Reported | UL and Other
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred front-end loads				113
As Previously Reported | Variable Annuities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred front-end loads				288
Adoption of New Accounting Standard | Accounting Standards Update 2018-12
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred front-end loads		$ (617)		3,190
Adoption of New Accounting Standard | Accounting Standards Update 2018-12 | UL and Other
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred front-end loads				3,185
Adoption of New Accounting Standard | Accounting Standards Update 2018-12 | Variable Annuities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred front-end loads				$ 5