Investments (AFS contractual maturity) (Details 8) - Ameriprise Financial [Member] - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Amortized cost
Due within one year	$ 2,002
Due after one year through five years	6,784
Due after five years through 10 years	4,107
Due after 10 years	4,366
Total having single maturity dates	17,259
Amortized cost	29,195	$ 29,472
Fair value
Due within one year	2,024
Due after one year through five years	7,064
Due after five years through 10 years	4,255
Due after 10 years	5,244
Total having single maturity dates	18,587
Fair value	30,647	30,719
Residential mortgage backed securities [Member]
Amortized cost
Without single maturity dates	6,876
Amortized cost	6,876	6,899
Fair value
Without single maturity dates	6,921
Fair value	6,921	6,918
Commercial mortgage backed securities [Member]
Amortized cost
Without single maturity dates	3,407
Amortized cost	3,407	3,347
Fair value
Without single maturity dates	3,443
Fair value	3,443	3,367
Asset backed securities [Member]
Amortized cost
Without single maturity dates	1,644
Amortized cost	1,644	1,532
Fair value
Without single maturity dates	1,678
Fair value	1,678	1,549
Common stocks [Member]
Amortized cost
Without single maturity dates	9
Amortized cost	9	10
Fair value
Without single maturity dates	18
Fair value	$ 18	$ 22