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		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Numerator:
Income from continuing operations	$ 565	$ 448	$ 1,548	$ 1,096
Less: Net income attributable to noncontrolling interests	145	67	353	57
Income from continuing operations attributable to Ameriprise Financial	420	381	1,195	1,039
Income (loss) from discontinued operations, net of tax	0	1	(1)	(1)
Net income attributable to Ameriprise Financial	$ 420	$ 382	$ 1,194	$ 1,038
Denominator:
Basic: Weighted-average common shares outstanding	190.3	201.3	192.8	204.8
Effect of potentially dilutive nonqualified stock options and other share-based awards (in shares)	3.4	3.8	3.5	3.9
Diluted: Weighted-average common shares outstanding	193.7	205.1	196.3	208.7
Basic:
Income from continuing operations (in dollars per share)	$ 2.21	$ 1.90	$ 6.20	$ 5.07
Loss from discontinued operations (in dollars per share)			$ (0.01)
Net income (in dollars per share)	$ 2.21	$ 1.90	$ 6.19	$ 5.07
Diluted:
Income from continuing operations (in dollars per share)	$ 2.17	$ 1.86	$ 6.09	$ 4.97
Loss from discontinued operations (in dollars per share)			$ (0.01)
Net income (in dollars per share)	$ 2.17	$ 1.86	$ 6.08	$ 4.97
Effect of potentially dilutive nonqualified stock options and other share-based awards (in shares)			0.2	0