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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2013
Earnings Per Share [Abstract]  
Reconciliation Of Earnings Per Share Basic And Diluted
The following table sets forth the computation of basic and diluted earnings per share from continuing operations for the years ended December 31 (in thousands except per share amounts): 
 
 
2013
 
2012
 
2011
Numerator:
 
 
 
 
 
 
Income from continuing operations used in computing basic and diluted earnings per share
 
$
733,993

 
$
623,925

 
$
548,078

Denominator:
 
 
 
 
 
 
Denominator for basic earnings per share-weighted-average common shares
 
222,475

 
227,119

 
232,889

Effect of dilutive securities – employee stock compensation plan
 
1,596

 
2,110

 
2,029

Denominator for diluted earnings per share- adjusted weighted-average shares outstanding
 
224,071

 
229,229

 
234,918

Earnings per common share from continuing operations:
 
 
 
 
 
 
Basic
 
$
3.30

 
$
2.75

 
$
2.35

Diluted
 
$
3.28

 
$
2.72

 
$
2.33