Investments (AFS contractual maturity) (Details 8) - Ameriprise Financial [Member] - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Amortized cost
Due within one year	$ 887
Due after one year through five years	7,240
Due after five years through 10 years	4,812
Due after 10 years	4,571
Total having single maturity dates	17,510
Amortized cost	28,172	$ 27,752
Fair value
Due within one year	897
Due after one year through five years	7,721
Due after five years through 10 years	5,076
Due after 10 years	5,525
Total having single maturity dates	19,219
Fair value	30,158	28,673
Residential mortgage backed securities [Member]
Amortized cost
Without single maturity dates	6,442
Amortized cost	6,442	5,933
Fair value
Without single maturity dates	6,538
Fair value	6,538	5,973
Commercial mortgage backed securities [Member]
Amortized cost
Without single maturity dates	2,825
Amortized cost	2,825	2,400
Fair value
Without single maturity dates	2,964
Fair value	2,964	2,456
Asset backed securities [Member]
Amortized cost
Without single maturity dates	1,387
Amortized cost	1,387	1,273
Fair value
Without single maturity dates	1,419
Fair value	1,419	1,296
Common stocks [Member]
Amortized cost
Without single maturity dates	8
Amortized cost	8	7
Fair value
Without single maturity dates	18
Fair value	$ 18	$ 18