Investments (Details 5) (USD $) In Millions	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Other-than-temporary impairments	$ (5)	$ (2)	$ (23)	$ (33)
Ameriprise Financial \| Residential mortgage backed securities
Amortized cost, debt maturities, without single maturity date	7,436		7,436
Amortized Cost	7,436		7,436		7,213
Fair value, debt maturities, without single maturity date	7,433		7,433
Fair Value	7,433		7,433		7,258
Ameriprise Financial \| Commercial mortgage backed securities
Amortized cost, debt maturities, without single maturity date	4,625		4,625
Amortized Cost	4,625		4,625		4,583
Fair value, debt maturities, without single maturity date	4,885		4,885
Fair Value	4,885		4,885		4,868
Ameriprise Financial \| Asset backed securities
Amortized cost, debt maturities, without single maturity date	2,004		2,004
Amortized Cost	2,004		2,004		1,982
Fair value, debt maturities, without single maturity date	2,034		2,034
Fair Value	2,034		2,034		2,020
Ameriprise Financial \| Common Stocks
Amortized cost, debt maturities, without single maturity date	6		6
Amortized Cost	6		6		6
Fair value, debt maturities, without single maturity date	8		8
Fair Value	8		8		10
Ameriprise Financial \| Available-for-Sale Securities
Amortized cost, due within one year	1,040		1,040
Amortized cost, due after one year through five years	5,856		5,856
Amortized cost, due after five years through 10 years	6,376		6,376
Amortized cost, due after 10 years	4,663		4,663
Amortized cost, debt maturities, single maturity date	17,935		17,935
Fair value, due within one year	1,056		1,056
Fair value, due after one year through five years	6,121		6,121
Fair value, due after five years through 10 years	7,067		7,067
Fair value, due after 10 years	5,408		5,408
Fair value, debt maturities, single maturity date	19,652		19,652
Ameriprise Financial
Gross realized gains		7	39	47
Gross realized losses		(3)	(18)	(4)
Other-than-temporary impairments	(5)	(2)	(23)	(33)
Amortized Cost	32,006		32,006		31,133
Fair Value	34,012		34,012		32,619
Net recognized gains and (losses) related to trading securities	$ (10)	$ 12	$ (7)	$ 23

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