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Earnings per Share
 3 Months Ended
Mar. 31, 2012
Notes To Condensed Consolidated Financial Statements [Abstract]  
Earnings per Share
Earnings per Share
The calculation of basic and diluted earnings per share for the three months ended March 31, 2012 and 2011 is presented below. The sum of earnings per share amounts may not equal the totals due to rounding.
 
Three Months Ended March 31,
 
2012
 
2011
Numerator:
 

 
 

Amounts attributable to common stockholders:
 

 
 

Income from continuing operations
$
139,338

 
$
88,186

Income (loss) from discontinued operations
19,332

 
(1,882
)
Net income (numerator for diluted EPS)
158,670

 
86,304

Less: Preference stock dividend
(13
)
 
(15
)
Income attributable to common stockholders (numerator for basic EPS)
$
158,657

 
$
86,289

Denominator (in thousands):
 

 
 

Weighted-average shares used in basic EPS
199,960

 
203,690

Effect of dilutive shares:
 

 
 

Preferred stock
2

 
2

Preference stock
398

 
455

Stock plans
312

 
48

Weighted-average shares used in diluted EPS
200,672

 
204,195

Basic earnings per share:
 

 
 

Income from continuing operations
$
0.70

 
$
0.43

Income (loss) from discontinued operations
0.10

 
(0.01
)
Net income
$
0.79

 
$
0.42

Diluted earnings per share:
 

 
 

Income from continuing operations
$
0.69

 
$
0.43

Income (loss) from discontinued operations
0.10

 
(0.01
)
Net income
$
0.79

 
$
0.42

Anti-dilutive shares (in thousands):
 

 
 

Anti-dilutive shares not used in calculating diluted weighted-average shares
13,811

 
14,337