Investments (Net Inv Inc summary) (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020		Sep. 30, 2019	Sep. 30, 2020		Sep. 30, 2019	Jun. 30, 2020
Investments, Debt and Equity Securities [Abstract]
Investment income on fixed maturities	$ 275		$ 349	$ 887		$ 1,046
Net realized gains (losses)	4	[1]	(10)	(18)	[1]	(6)
Affordable housing partnerships	(14)		(26)	(50)		(58)
Other	13		19	58		67
Consolidated investment entities	22		24	56		72
Net investment income	300		$ 356	933		$ 1,121
Allowance for Credit Loss	$ 30			$ 30			$ 2

[1] Includes the change in the allowance for credit losses of $(2) million and $(30) million for the three months and nine months ended September 30, 2020, respectively.Available-for-Sale securities distributed by type were as follows: