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Net Income per Share (Tables)
 3 Months Ended
Mar. 31, 2018
Earnings Per Share [Abstract]  
Summary of denominators for the computation of basic and diluted net income (loss) per share
The following table sets forth the calculation of basic and diluted net income per share:
 
Three Months Ended March 31,
 
2018
 
2017
 
(In millions, except net income per share)
Numerator:
 
 
 
Net income
$
107

 
$
77

Denominator:
 
 
 
Shares outstanding at the beginning of the period
59

 
56

Weighted-average number of shares issued:
 
 
 
1.625% Exchange (1)
1

 
—

Denominator for basic net income per share
60

 
56

Effect of dilutive securities:
 
 
 
Convertible senior notes (1)
1

 
—

1.125% Warrants (1)
4

 
—

Denominator for diluted net income per share
65

 
56

 
 
 
 
Net income per share: (2)
 
 
 
Basic
$
1.79

 
$
1.38

Diluted
$
1.64

 
$
1.37

______________________________
(1)
For more information regarding the 1.625% Exchange and the convertible senior notes, refer to Note 7, “Debt.” For more information regarding the 1.125% Warrants, refer to Note 9, “Stockholders' Equity.” The dilutive effect of all potentially dilutive common shares is calculated using the treasury stock method.
(2)
Source data for calculations in thousands.