MRBs (Reconciles of MRBs Assets and Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Market Risk Benefit [Line Items]
Assets	$ 3,906	$ 2,807
Liabilities	1,548	2,078
Net (Assets) Liabilities	(2,358)	(729)
Retirement Plan Services [Member]
Market Risk Benefit [Line Items]
Assets	34	24
Liabilities	6	2
Net (Assets) Liabilities	(28)	(22)	$ (1)
Variable Annuities [Member]
Market Risk Benefit [Line Items]
Assets	3,756	2,666
Liabilities	1,460	2,004
Net (Assets) Liabilities	(2,296)	(662)	2,398
Fixed Annuities [Member]
Market Risk Benefit [Line Items]
Assets	116	117
Liabilities	82	72
Net (Assets) Liabilities	$ (34)	$ (45)	$ 114