Customer Deposits (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Customer Deposits [Abstract]
Amount of reserves that do not allow for a surrender charge	$ 2,700,000,000
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%
Minimum [Member]
Customer Deposits [Abstract]
Amount of fixed rate investment certificates	$ 1,000
Term of fixed rate investment certificates	3 months
Returns on current first term stock market certificates (as a percent)	2.75%
Maximum [Member]
Customer Deposits [Abstract]
Amount of fixed rate investment certificates	$ 2,000,000
Term of fixed rate investment certificates	48 months
Returns on current first term stock market certificates (as a percent)	13.25%
Ameriprise Financial [Member]
Customer Deposits [Abstract]
Fixed rate certificates	$ 7,032,000,000	$ 7,377,000,000
Stock market certificates	456,000,000	476,000,000
Stock market embedded derivative reserve	7,000,000	6,000,000
Other	27,000,000	33,000,000
Less: accrued interest classified in other liabilities	(21,000,000)	(7,000,000)
Total investment certificate reserves	7,501,000,000	7,885,000,000
Brokerage customer deposits	6,929,000,000	3,660,000,000
Total	$ 14,430,000,000	$ 11,545,000,000