Insurance (Guarantees Related to Annuity Contracts) (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Variable Annuity Guarantees: | Guaranteed Death Benefits
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value	$ 49,087	$ 62,281
Separate account value (1)	31,724	42,043
Net amount at risk	$ 4,878	$ 1,490
Average attained age of contractholders	69 years	68 years
Variable Annuity Guarantees: | Guaranteed Annuitization Benefits
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value	$ 17,946	$ 23,121
Separate account value (1)	16,516	21,508
Net amount at risk	$ 616	$ 500
Average attained age of contractholders	68 years	66 years
Other Annuity Guarantees: | Guaranteed Annuitization Benefits
Net Amount at Risk by Product and Guarantee [Line Items]
Total account value	$ 4,150	$ 5,002
Net amount at risk	$ 188	$ 196
Average attained age of contractholders	57 years	56 years