Investments (AFS contractual maturity) (Details 8) - Ameriprise Financial [Member] - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Amortized cost
Due within one year	$ 1,701
Due after one year through five years	6,725
Due after five years through 10 years	4,712
Due after 10 years	4,407
Total having single maturity dates	17,545
Amortized cost	29,300	$ 29,472
Fair value
Due within one year	1,718
Due after one year through five years	7,021
Due after five years through 10 years	4,832
Due after 10 years	5,190
Total having single maturity dates	18,761
Fair value	30,582	30,719
Residential mortgage backed securities [Member]
Amortized cost
Without single maturity dates	6,866
Amortized cost	6,866	6,899
Fair value
Without single maturity dates	6,882
Fair value	6,882	6,918
Commercial mortgage backed securities [Member]
Amortized cost
Without single maturity dates	3,255
Amortized cost	3,255	3,347
Fair value
Without single maturity dates	3,274
Fair value	3,274	3,367
Asset backed securities [Member]
Amortized cost
Without single maturity dates	1,625
Amortized cost	1,625	1,532
Fair value
Without single maturity dates	1,647
Fair value	1,647	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