Earnings per Share Attributable to Ameriprise Financial, Inc. Common Shareholders (Basic & Diluted) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Numerator:
Income from continuing operations	$ 479	$ 516
Less: Net income attributable to noncontrolling interests	86	115
Income from continuing operations attributable to Ameriprise Financial	393	401
Loss from discontinued operations, net of tax	0	(1)
Net income attributable to Ameriprise Financial	$ 393	$ 400
Denominator:
Basic: Weighted-average common shares outstanding	186.3	195.5
Effect of potentially dilutive nonqualified stock options and other share-based awards (in shares)	2.8	3.6
Diluted: Weighted-average common shares outstanding	189.1	199.1
Basic:
Income from continuing operations (in dollars per share)	$ 2.11	$ 2.05
Net income (in dollars per share)	$ 2.11	$ 2.05
Diluted:
Income from continuing operations (in dollars per share)	$ 2.08	$ 2.01
Net income (in dollars per share)	$ 2.08	$ 2.01
Effect of potentially dilutive nonqualified stock options and other share-based awards (in shares)	1.6	1.5