Other Revenues and Other Expenses (Other Expenses) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Other Income and Expenses [Abstract]
Compensation	$ 89	$ 81
Contracted services and other labor costs	62	50
Transition services agreements	11	26
Establishment costs	0	14
Premium and other taxes, licenses and fees	13	12
Volume related costs, excluding compensation, net of DAC capitalization	135	143
Interest expense on debt	18	17
Other	66	49
Total other expenses	$ 394	$ 392