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Restricted Stock Units (Tables)
12 Months Ended
Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Restricted Stock Units Activity
The activity related to the restricted stock units is set forth below:

 
Restricted Stock Units Outstanding
 
2015
 
2014
 
Units
 
Grant Date
Weighted
Average Fair
Value
 
Units
 
Grant Date
Weighted
Average Fair
Value
Outstanding, January 1,
3,065,363

 
$
56.04

 
3,503,450

 
$
61.54

Granted
1,772,439

(1) 
36.45

 
1,287,658

 
49.76

Delivered
(843,032
)
 
62.07

 
(1,027,852
)
 
64.94

Forfeited
(271,641
)
 
48.69

 
(697,893
)
 
56.95

Outstanding, December 31,
3,723,129

 
$
45.88

 
3,065,363

 
$
56.04


_____________________________________________
(1)
Excludes 1,999,552 stock units granted to employees subsequent to December 31, 2015 as part of the long term incentive awards program.