Investments (Holdings info) (Details) - Ameriprise Financial [Member] - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Investments	$ 34,643	$ 34,144
Available-for-sale securities [Member]
Investments	29,480	28,673
Mortgage loans, net [Member]
Investments	3,055	3,359
Policy and certificate loans [Member]
Investments	828	824
Other investments [Member]
Investments	$ 1,280	$ 1,288