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Earnings per Share Attributable to Ameriprise Financial, Inc. Common Shareholders
3 Months Ended
Mar. 31, 2018
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 March 31,
2018
 
2017
(in millions, except per share amounts)
Numerator:
 
 
 
Net income
$
594

 
$
403

 
 
 
 
Denominator:
 
 
 
Basic: Weighted-average common shares outstanding
149.5

 
157.5

Effect of potentially dilutive nonqualified stock options and other share-based awards
2.6

 
2.6

Diluted: Weighted-average common shares outstanding
152.1

 
160.1

 
 
 
 
Earnings per share:
 
 
 
Basic
$
3.97

 
$
2.56

Diluted
$
3.91

 
$
2.52


The calculation of diluted earnings per share excludes the incremental effect of 1.1 million and 2.5 million options as of March 31, 2018 and March 31, 2017, respectively, due to their anti-dilutive effect.