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Earnings Per Share
 3 Months Ended
Mar. 31, 2018
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings Per Share
The following chart sets forth the computation of earnings per share (in thousands, except per share amounts):
 
Three Months Ended
 
March 31,
 
2018
 
2017
Income from continuing operations
$
152,763

 
$
140,809

Denominator for basic earnings per share—Weighted-average shares outstanding
309,517

 
308,028

Effect of dilutive securities:
 
 
 
RSUs
619

 
564

Stock options
1,211

 
1,708

Denominator for diluted earnings per share—Adjusted weighted-average shares outstanding
311,347

 
310,300

Basic earnings per share from continuing operations
$
0.49

 
$
0.46

Diluted earnings per share from continuing operations
$
0.49

 
$
0.45

The following table sets forth the number of employee stock-based compensation awards outstanding but not included in the computation of diluted earnings per share because their effect would have been antidilutive for the three months ended March 31, 2018 and 2017 (in thousands):
 
Three Months Ended
 
March 31,
 
2018
 
2017
Antidilutive securities:
 
 
 
RSUs
—

 
147

Stock options
—

 
78