Earnings per Share Attributable to Ameriprise Financial, Inc. Common Shareholders (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Numerator:
Income from continuing operations	$ 282	$ 171	$ 648	$ 420
Less: Net loss attributable to noncontrolling interests	(40)	(53)	(10)	(49)
Income from continuing operations attributable to Ameriprise Financial	322	224	658	469
Loss from discontinued operations, net of tax	(1)	(1)	(2)	(2)
Net income attributable to Ameriprise Financial	$ 321	$ 223	$ 656	$ 467
Denominator:
Basic: Weighted-average common shares outstanding	204.9	221.7	206.6	224.5
Effect of potentially dilutive nonqualified stock options and other share-based awards (in shares)	3.7	3.9	3.8	4.1
Diluted: Weighted-average common shares outstanding	208.6	225.6	210.4	228.6
Basic:
Income from continuing operations (in dollars per share)	$ 1.57	$ 1.01	$ 3.18	$ 2.09
Loss from discontinued operations (in dollars per share)			$ (0.01)	$ (0.01)
Net income (in dollars per share)	$ 1.57	$ 1.01	$ 3.17	$ 2.08
Diluted:
Income from continuing operations (in dollars per share)	$ 1.54	$ 0.99	$ 3.13	$ 2.05
Loss from discontinued operations (in dollars per share)			$ (0.01)	$ (0.01)
Net income (in dollars per share)	$ 1.54	$ 0.99	$ 3.12	$ 2.04
Effect of potentially dilutive nonqualified stock options and other share-based awards (in shares)			0	7.7