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Shareholders' Equity (Tables)
12 Months Ended
Dec. 31, 2015
Stockholders' Equity Note [Abstract]  
Assumptions Used In The Weighted Average Fair Value Of The Stock Options Granted
The weighted average fair value of the Company’s stock options granted during 2015, 2014 and 2013 were $12.16, $10.88 and $10.45, respectively, using the following assumptions:
 
 
2015
 
2014
 
2013
Expected term (in years)
 
5.58

 
6.79

 
6.92

Expected volatility
 
23.86
%
 
26.98
%
 
31.46
%
Expected dividend yield
 
1.00
%
 
1.15
%
 
1.21
%
Risk-free interest rate
 
1.90
%
 
2.04
%
 
2.12
%
Stock-based Compensation Expense
The Company recognized stock-based compensation expense in its Consolidated Financial Statements in 2015, 2014 and 2013 as follows:
 
 
2015
 
2014
 
2013
Stock-based compensation expense
 
$
17,312

 
$
13,463

 
$
37,865

Less: Deferred tax benefit
 
(6,107
)
 
(4,704
)
 
(13,823
)
Stock-based compensation expense, net of tax
 
$
11,205

 
$
8,759

 
$
24,042

Stock Option Plans
This table presents certain information relating to the Company’s stock option plans for 2015, 2014 and 2013:
 
 
Number of
Shares
 
Weighted
Avg. Price
Balance as of December 31, 2012
 
25,610,000

 
$
20.81

Granted
 
2,281,000

 
33.67

Exercised
 
(3,733,000
)
 
17.26

Expired or canceled
 
(521,000
)
 
22.25

Balance as of December 31, 2013
 
23,637,000

 
$
22.58

Granted
 
2,293,000

 
40.05

Exercised
 
(5,261,000
)
 
19.52

Expired or canceled
 
(208,000
)
 
28.83

Balance as of December 31, 2014
 
20,461,000

 
$
25.26

Granted
 
2,005,000

 
53.34

Exercised
 
(2,927,000
)
 
21.44

Expired or canceled
 
(302,000
)
 
28.97

Balance as of December 31, 2015
 
19,237,000

 
$
28.71

 
 
 
 
 
Exercisable as of December 31, 2015
 
8,508,000

 
$
22.04

Available for future grant as of December 31, 2015
 
26,890,000

 
 
Stock Options Outstanding And Exercisable
This table summarizes information relating to all options outstanding and exercisable at December 31, 2015:
 
 
 
Options Outstanding at December 31, 2015
 
Options Exercisable at December 31, 2015
Range of Exercise Prices (Per Share)
Number of Shares
 
Weighted Average
Exercise Price
(Per Share)
 
Weighted Average
Remaining
Contractual
Life (Years)
 
Number of Shares
 
Weighted Average
Exercise Price
(Per Share)
 
Weighted Average
Remaining
Contractual
Life (Years)
$
14.62

-
16.48
3,513,000

 
$
15.23

 
4.58
 
2,396,000

 
$
14.97

 
3.92

17.65

-
21.05
2,100,000

 
17.67

 
4.03
 
2,085,000

 
17.65

 
4.00

22.45

-
23.86
4,028,000

 
23.20

 
5.93
 
1,678,000

 
23.20

 
5.93

27.03

-
36.16
5,515,000

 
32.08

 
4.23
 
2,349,000

 
32.32

 
4.68

40.64

-
53.34
4,081,000

 
46.88

 
9.49
 

 

 

 
 
 
19,237,000

 
 
 
 
 
8,508,000

 
 
 
 
Common Stock Buyback
The following table provides the total number of shares repurchased and the related total costs in 2015, 2014 and 2013:
Year
 
Total Number of
Shares Repurchased
 
Total Cost
2015
 
5,951,000

 
$
289,587

2014
 
7,888,000

 
278,357

2013
 
6,789,000

 
209,942