Changes in Shareholders' Equity (Details 3) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Stock repurchase program, authorized amount	$ 2,500
Remaining balance under stock repurchase program	$ 724
Number of shares reacquired through surrender of restricted shares	0.3	0.3
Value of shares reacquired through surrender of restricted shares	$ 46	$ 29
Number of shares reacquired through net settlement options	0.6	0.1
Aggregate value of shares reacquired through net settlement options	$ 105	$ 15
Treasury shares reissued for restricted stock award grants and Ameriprise Financial Franchise Advisor Deferred Compensation Plan	0.5	0.7
Open market share repurchases [Member]
Repurchase of common shares (in shares)	2.5	2.8
Repurchase of common shares	$ 386	$ 355