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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2011
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock Options Activity


A summary of the Plans’ shares under option for the six months ended June 30, 2011 is as follows:
 
Shares
Under
Option
(thousands)
 
Weighted
Average
Exercise
Price
 
Weighted
Average
Remaining
Contractual
Life (in years)
 
Aggregate
Intrinsic
Value
(in millions)
Outstanding and exercisable at December 31, 2010
3,253


 
$
28.64


 
4.9


 
$
142.2


Exercised
(476
)
 
$
28.40


 
 
 


Outstanding and exercisable at March 31, 2011
2,777


 
$
28.69


 
4.7


 
$
141.6


Exercised
(208
)
 
$
25.83


 
 
 
 
Outstanding and exercisable at June 30, 2011
2,569


 
$
28.91


 
4.5


 
$
133.3
Allocation of Share-based Compensation Costs by Plan


Restricted stock compensation expense reduced earnings before income taxes and noncontrolling interest, net earnings and earnings per share for the three and six months ended June 30, 2011 and 2010 by:
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
(millions of dollars, except per share data)
2011
 
2010
 
2011
 
2010
Earnings before income taxes and noncontrolling interest
$
4.7


 
$
5.6


 
$
7.6


 
$
10.4


Net earnings
$
3.6


 
$
4.4


 
$
5.8


 
$
8.3


Earnings per share — basic
$
0.03


 
$
0.04


 
$
0.05


 
$
0.07


Earnings per share — diluted
$
0.03


 
$
0.03


 
$
0.04


 
$
0.06
Nonvested Restricted Stock Activity
A summary of the Company’s nonvested restricted stock for the six months ended June 30, 2011 is as follows:
 
Shares
Subject to
Restriction
(thousands)
 
Weighted
Average
Price
Nonvested at December 31, 2010
1,870.6


 
$
30.55


Granted
270.1


 
$
70.47


Vested
(572.0
)
 
$
27.00


Forfeited
(12.4
)
 
$
30.14


Nonvested at March 31, 2011
1,556.3


 
$
38.79


Granted
3.3


 
$
78.47


Vested
(25.2
)
 
$
33.69


Forfeited
(27.3
)
 
$
38.03


Nonvested at June 30, 2011
1,507.1


 
$
38.98