Changes in Shareholders' Equity (Details 3) - USD ($) shares in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2015
Stock repurchase program, authorized amount	$ 2,500		$ 2,500
Remaining balance under stock repurchase program	$ 2,400
Number of shares reacquired through surrender of restricted shares	0.3	0.3
Value of shares reacquired through surrender of restricted shares	$ 33	$ 29
Number of shares reacquired through net settlement options	1.9	0.3
Aggregate value of shares reacquired through net settlement options	$ 248	$ 31
Treasury shares reissued for restricted stock award grants and Ameriprise Financial Franchise Advisor Deferred Compensation Plan	0.8	0.9
Open market share repurchases [Member]
Repurchase of common shares (in shares)	8.0	13.7
Repurchase of common shares	$ 1,000	$ 1,300