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Earnings Per Share (EPS) (Tables)
 3 Months Ended
Mar. 31, 2018
Earnings Per Share [Abstract]  
Computation of Basic and Diluted EPS
The following table presents the computation of our basic and diluted EPS attributable to our common stock:
 
Three Months Ended
March 31,
(in millions, except per share data)
2018
2017
Net income
$
54

$
29

Weighted average shares of common stock outstanding
70

69

Basic EPS
$
0.77

$
0.42

 
 
 
Net income
$
54

$
29

Weighted average shares of common stock
70

69

Dilutive effect of stock options and restricted stock units
2

2

Weighted average shares of common stock outstanding
72

71

Diluted EPS
$
0.75

$
0.41

 
 
 
Common stock equivalents excluded from income per diluted share because of their anti-dilutive effect
1

1