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Earnings per Share Attributable to Ameriprise Financial, Inc. Common Shareholders
 12 Months Ended
Dec. 31, 2018
Earnings Per Share [Abstract]  
Earnings per Share Attributable to Ameriprise Financial, Inc. Common Shareholders Earnings per Share
The computations of basic and diluted earnings per share is as follows:
 
Years Ended December 31,
2018
 
2017
 
2016
(in millions, except per share amounts)
Numerator:
 
 
 
 
 
Net income
$
2,098

 
$
1,480

 
$
1,313

 
 
 
 
 
 
Denominator:
 
 
 
 
 
Basic: Weighted-average common shares outstanding
145.6

 
154.1

 
166.3

Effect of potentially dilutive nonqualified stock options and other share-based awards
2.1

 
2.6

 
1.9

Diluted: Weighted-average common shares outstanding
147.7

 
156.7

 
168.2

 
 
 
 
 
 
Earnings per share attributable to Ameriprise Financial, Inc. common shareholders:
 
 
 
 
 
Basic
$
14.41

 
$
9.60

 
$
7.90

Diluted
$
14.20

 
$
9.44

 
$
7.81


The calculation of diluted earnings per share excludes the incremental effect of 3.2 million, nil and 1.5 million options as of December 31, 2018, 2017 and 2016, respectively, due to their anti-dilutive effect.