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Earnings per Share
 12 Months Ended
Dec. 31, 2012
Earnings Per Share [Abstract]  
Earnings Per Share [Text Block]
17. Earnings per Share

The following table sets forth a reconciliation of the information used in computing basic and diluted earnings per share:
 
Years Ended December 31,
 
2012
 
2011
 
2010
Earnings from continuing operations
$
833,119

 
$
773,186

 
$
619,497

Earnings (loss) from discontinued operations, net
(22,049
)
 
122,057

 
80,607

Net earnings
$
811,070


$
895,243

 
$
700,104

 
 
 
 
 
 
Basic earnings per common share:
 
 
 
 
 
Earnings from continuing operations
$
4.59

 
$
4.16

 
$
3.31

Earnings (loss) from discontinued operations, net
$
(0.12
)
 
$
0.66

 
$
0.43

Net earnings
$
4.47

 
$
4.82

 
$
3.75

 
 
 
 
 
 
Weighted average shares outstanding
181,551,000

 
185,882,000

 
186,897,000

 
 
 
 
 
 
Diluted earnings per common share:
 
 
 
 
 
Earnings from continuing operations
$
4.53

 
$
4.09

 
$
3.27

Earnings (loss) from discontinued operations, net
$
(0.12
)
 
$
0.65

 
$
0.43

Net earnings
$
4.41

 
$
4.74

 
$
3.70

 
 
 
 
 
 
Weighted average shares outstanding
183,993,000

 
188,887,000

 
189,170,000


 
The following table is a reconciliation of the share amounts used in computing earnings per share:
 
Years Ended December 31,
 
2012
 
2011
 
2010
Weighted average shares outstanding - Basic
181,551,000

 
185,882,000

 
186,897,000

Dilutive effect of assumed exercise of employee stock options and SARs and vesting of performance shares and restricted shares
2,442,000

 
3,005,000

 
2,273,000

Weighted average shares outstanding - Diluted
183,993,000

 
188,887,000

 
189,170,000



Diluted per share amounts are computed using the weighted-average number of common shares and, if dilutive, potential common shares outstanding during the period.  Potential common shares consist of the incremental common shares issuable upon the exercise of stock options and SARs, and vesting of performance shares and restricted shares, as determined using the treasury stock method.  For the years ended December 31, 2012, 2011, and 2010, the weighted average number of anti-dilutive potential common shares excluded from the calculation above totaled 2,950,000, 1,333,000, and 1,378,000, respectively.