Regulatory Requirements (Narrative) (Details) $ in Millions	Dec. 31, 2015 USD ($) subsidiary	Dec. 31, 2014 USD ($)
Regulatory Requirements
Aggregate amount of unrestricted net assets	$ 2,000
Number of broker-dealer subsidiaries | subsidiary	4
Ameriprise Certificate Company [Member]
Regulatory Requirements
Requirement of qualified assets under Investment Company Act of 1940	$ 4,800	$ 4,200
Actual amount of qualified assets	5,100	4,500
RiverSource Life [Member]
Regulatory Requirements
Statutory unassigned surplus	$ 954	638
Percentage of previous year-end statutory capital and surplus (as a percent)	10.00%
Statutory capital and surplus	$ 3,700	3,300
Government debt securities on deposit with states under legal requirements	5	5
IDS Property Casualty [Member]
Regulatory Requirements
Statutory capital and surplus	684	560
Ameriprise Certificate Company [Member]
Regulatory Requirements
Maximum commitment under Capital Support Agreement	$ 50	$ 115