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		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Numerator:
Net income attributable to Ameriprise Financial	$ 215	$ 397	$ 914	$ 1,205
Denominator:
Basic: Weighted-average common shares outstanding	164.0	180.4	168.3	183.5
Effect of potentially dilutive nonqualified stock options and other share-based awards (in shares)	1.8	2.3	1.8	2.5
Diluted: Weighted-average common shares outstanding	165.8	182.7	170.1	186.0
Basic:
Net income (in dollars per share)	$ 1.31	$ 2.20	$ 5.43	$ 6.57
Diluted:
Net income (in dollars per share)	$ 1.30	$ 2.17	$ 5.37	$ 6.48
Effect of potentially dilutive nonqualified stock options and other share-based awards (in shares)			2.9	1.7