XML 47 R31.htm IDEA: XBRL DOCUMENT v2.4.1.9
STOCK-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Activity of unvested restricted stock units and performance share units
The following table summarizes the activity of unvested restricted stock units ("RSUs") and performance share units during the years ended December 31, 2012, 2013 and 2014:
 
Share-Based Awards
 
Shares
Weighted Average  Grant
Date Fair Value
 
 
 
 
 
 
Unvested at December 31, 2011
 
799,980

 
$
231.87

 
 
 
 
 
 
 
Granted
 
95,062

 
$
643.12

 
Vested
 
(353,819
)
 
$
108.31

 
Performance Shares Adjustment
 
6,649

 
$
532.26

 
Forfeited
 
(7,744
)
 
$
444.18

 
Unvested at December 31, 2012
 
540,128

 
$
389.21

 
 
 
 
 
 
 
Granted
 
162,341

 
$
730.47

 
Vested
 
(258,198
)
 
$
242.63

 
Performance Shares Adjustment
 
101,490

 
$
681.13

 
Forfeited
 
(11,442
)
 
$
579.71

 
Unvested at December 31, 2013
 
534,319

 
$
615.10

 
 
 
 
 
 
 
Granted
 
128,484

 
$
1,308.13

 
Assumed in an acquisition
 
43,993

 
$
1,238.68

 
Vested
 
(195,730
)
 
$
492.22

 
Performance Shares Adjustment
 
68,499

 
$
1,085.94

 
Forfeited
 
(9,250
)
 
$
972.19

 
Unvested at December 31, 2014
 
570,315

 
$
912.26

 
Schedule of share-based compensation, stock options, activity
The following table summarizes for the year ended December 31, 2014 stock option activity for employee stock options assumed in acquisitions:
Assumed Employee Stock Options
 
Number of Shares
 
Weighted Average
 Exercise Price
 
Aggregate
 Intrinsic Value (000's)
 
Weighted Average Remaining Contractual Term (in years)
Balance, January 1, 2013
 
—

 
 
$
—

 
 
$
—

 
0
Assumed in acquisition
 
540,179

 
 
$
260.96

 
 
 
 
 
Exercised
 
(387,669
)
 
 
$
222.73

 
 
 
 
 
Forfeited
 
(23,802
)
 
 
$
478.83

 
 
 
 
 
Balance, December 31, 2013
 
128,708

 
 
$
335.83

 
 
$
106,386

 
6.9
Assumed in acquisitions
 
61,897

 
 
$
457.67

 
 
 
 
 
Exercised
 
(43,223
)
 
 
$
342.39

 
 
 
 
 
Forfeited
 
(2,217
)
 
 
$
517.91

 
 
 
 
 
Balance, December 31, 2014
 
145,165

 
 
$
383.05

 
 
$
109,914

 
6.5
Vested and exercisable as of December 31, 2014
 
88,118

 
 
$
306.32

 
 
$
73,481

 
5.7
Vested and exercisable as of December 31, 2014 and expected to vest thereafter, net of estimated forfeitures
 
144,077

 
 
$
382.81

 
 
$
109,124

 
6.5