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Quarterly Financial Information (Unaudited) (Tables)
12 Months Ended
Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Financial Information
The following is a summary of quarterly financial data:
(In thousands. except per share data)
2013
Three months ended
March 31
 
June 30
 
September 30
 
December 31
Revenues
$
1,506,769

 
$
1,570,962

 
$
1,634,124

 
$
1,696,679

Net income
116,615

 
115,957

 
136,974

 
130,379

Net income per share(1)
 
 
 
 
 
 
 
Basic
0.86

 
0.85

 
1.01

 
0.97

Diluted
0.83

 
0.82

 
0.97

 
0.93

 
2012
Three months ended
March 31
 
June 30
 
September 30
 
December 31
Revenues
$
1,378,705

 
$
1,415,747

 
$
1,420,501

 
$
1,608,601

Net income
135,318

 
108,838

 
100,947

 
165,489

Net income per share(1)
 
 
 
 
 
 
 
Basic
0.98

 
0.79

 
0.74

 
1.22

Diluted
0.94

 
0.76

 
0.71

 
1.17

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(1)
Net income per share (“EPS”) in each quarter is computed using the weighted-average number of shares outstanding during that quarter, while EPS for the full year is computed using the weighted-average number of shares outstanding during the year. Thus, the sum of the four quarters EPS does not necessarily equal the full-year EPS.