Adoption of ASU 2018-12 (Summary of Changes in DFEL) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
DFEL	$ 5,450	$ 5,052
Accounting Standards Update 2018-12 [Member]
DFEL	(3,190)			$ 3,591
Variable Annuities [Member]
DFEL	282	286	$ 291
Variable Annuities [Member] | Accounting Standards Update 2018-12 [Member]
DFEL				293
UL and Other [Member]
DFEL	$ 5,168	4,766	$ 3,934
UL and Other [Member] | Accounting Standards Update 2018-12 [Member]
DFEL				3,298
As Previously Reported [Member] | Accounting Standards Update 2018-12 [Member]
DFEL		$ 5,669		401
As Previously Reported [Member] | Variable Annuities [Member] | Accounting Standards Update 2018-12 [Member]
DFEL				288
As Previously Reported [Member] | UL and Other [Member] | Accounting Standards Update 2018-12 [Member]
DFEL				113
Restatement Adjustments [Member] | Accounting Standards Update 2018-12 [Member]
DFEL				3,190
Restatement Adjustments [Member] | Variable Annuities [Member] | Accounting Standards Update 2018-12 [Member]
DFEL				5
Restatement Adjustments [Member] | UL and Other [Member] | Accounting Standards Update 2018-12 [Member]
DFEL				$ 3,185