Earnings per Share Attributable to Ameriprise Financial, Inc. Common Shareholders (Basic & Diluted) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Numerator:
Income from continuing operations	$ 476	$ 467	$ 955	$ 983
Less: Net income attributable to noncontrolling interests	61	93	147	208
Income from continuing operations attributable to Ameriprise Financial	415	374	808	775
Loss from discontinued operations, net of tax	0			(1)
Net income attributable to Ameriprise Financial	$ 415	$ 374	$ 808	$ 774
Denominator:
Basic: Weighted-average common shares outstanding	183.8	192.7	185.1	194.1
Effect of potentially dilutive nonqualified stock options and other share-based awards (in shares)	2.6	3.5	2.6	3.5
Diluted: Weighted-average common shares outstanding	186.4	196.2	187.7	197.6
Basic:
Income from continuing operations (in dollars per share)	$ 2.26	$ 1.94	$ 4.37	$ 3.99
Loss from discontinued operations (in dollars per share)			0.00
Net income (in dollars per share)	2.26	1.94	4.37	3.99
Diluted:
Income from continuing operations (in dollars per share)	2.23	1.91	4.30	3.92
Loss from discontinued operations (in dollars per share)			0.00
Net income (in dollars per share)	$ 2.23	$ 1.91	$ 4.30	$ 3.92
Effect of potentially dilutive nonqualified stock options and other share-based awards (in shares)			1.6	1.5