Investments (Holdings info) (Details) - Ameriprise Financial [Member] - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Investments	$ 35,875	$ 34,144
Available-for-sale securities [Member]
Investments	30,799	28,673
Mortgage loans, net [Member]
Investments	2,974	3,359
Policy and certificate loans [Member]
Investments	835	824
Other investments [Member]
Investments	$ 1,267	$ 1,288