Investments (AFS contractual maturity) (Details 8) - Ameriprise Financial [Member] - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Amortized cost
Due within one year	$ 877
Due after one year through five years	7,423
Due after five years through 10 years	4,767
Due after 10 years	4,476
Total having single maturity dates	17,543
Amortized cost	28,741	$ 27,752
Fair value
Due within one year	890
Due after one year through five years	7,886
Due after five years through 10 years	5,059
Due after 10 years	5,490
Total having single maturity dates	19,325
Fair value	30,799	28,673
Residential mortgage backed securities [Member]
Amortized cost
Without single maturity dates	6,759
Amortized cost	6,759	5,933
Fair value
Without single maturity dates	6,862
Fair value	6,862	5,973
Commercial mortgage backed securities [Member]
Amortized cost
Without single maturity dates	2,960
Amortized cost	2,960	2,400
Fair value
Without single maturity dates	3,089
Fair value	3,089	2,456
Asset backed securities [Member]
Amortized cost
Without single maturity dates	1,471
Amortized cost	1,471	1,273
Fair value
Without single maturity dates	1,504
Fair value	1,504	1,296
Common stocks [Member]
Amortized cost
Without single maturity dates	8
Amortized cost	8	7
Fair value
Without single maturity dates	19
Fair value	$ 19	$ 18