Customer Deposits (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012 Maximum	Dec. 31, 2012 Minimum	Dec. 31, 2012 Ameriprise Financial	Dec. 31, 2011 Ameriprise Financial
Fixed rate certificates				$ 2,807,000,000	$ 2,004,000,000
Stock market certificates				666,000,000	731,000,000
Stock market embedded derivative reserve				8,000,000	6,000,000
Other				31,000,000	36,000,000
Less: accrued interest classified in other liabilities				(10,000,000)	(5,000,000)
Total investment certificate reserves				3,502,000,000	2,772,000,000
Brokerage deposits				3,024,000,000	2,341,000,000
Banking deposits					4,737,000,000
Total				6,526,000,000	9,850,000,000
Amount of fixed rate investment certificates		$ 2,000,000	$ 1,000
Term of fixed rate investment certificates		36 months	3 months
Holding period of stock market certificates	364 days
Percentage of participation in the market index in the first option	100.00%
Percentage of participation in the market index in the second option	25.00%
Returns on current first term stock market certificates (as a percent)		2.50%	1.50%