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Earnings per Share Attributable to Ameriprise Financial, Inc. Common Shareholders
 6 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
Earnings per share attributable to Ameriprise Financial, Inc. common shareholders [Text Block]
Earnings per Share
The computation of basic and diluted earnings per share is as follows:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
2017
 
2016
 
2017
 
2016
(in millions, except per share amounts)
Numerator:
Net income
$
393

 
$
335

 
$
796

 
$
699

 
Denominator:
Basic: Weighted-average common shares outstanding
155.1

 
168.3

 
156.3

 
170.4

Effect of potentially dilutive nonqualified stock options and other share-based awards
2.4

 
1.8

 
2.5

 
1.8

Diluted: Weighted-average common shares outstanding
157.5

 
170.1

 
158.8

 
172.2

 
Earnings per share:
Basic
$
2.53

 
$
1.99

 
$
5.09

 
$
4.10

Diluted
$
2.50

 
$
1.97

 
$
5.01

 
$
4.06


The calculation of diluted earnings per share excludes the incremental effect of 2.6 million and 4.9 million options as of June 30, 2017 and 2016, respectively, due to their anti-dilutive effect.