Investments (Holdings info) (Details) - Ameriprise Financial [Member] - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Investments	$ 35,834	$ 34,144
Available-for-Sale securities, at fair value [Member]
Investments	30,719	28,673
Mortgage loans, net [Member]
Investments	2,986	3,359
Policy and certificate loans [Member]
Investments	831	824
Other investments [Member]
Investments	$ 1,298	$ 1,288