Investments (Holdings info) (Details) - Ameriprise Financial [Member] - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Investments	$ 34,746	$ 35,582
Available-for-sale securities [Member]
Investments	29,286	30,027
Mortgage loans, net [Member]
Investments	3,382	3,440
Policy and certificate loans [Member]
Investments	824	806
Other investments [Member]
Investments	$ 1,254	$ 1,309