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STOCK-BASED COMPENSATION
 6 Months Ended
May 31, 2014
Share-based Compensation [Abstract]  
STOCK-BASED COMPENSATION
STOCK-BASED COMPENSATION
Stock-based compensation cost for the three months ended May 31, 2014 and 2013 was $10.6 million and $14.9 million, respectively. Stock-based compensation cost for the six months ended May 31, 2014 and 2013 was $23.3 million and $31.3 million, respectively. The deferred tax benefit from stock-based compensation expenses for the three months ended May 31, 2014 and 2013 was $2.9 million and $4.3 million, respectively. The deferred tax benefit from stock-based compensation expenses for the six months ended May 31, 2014 and 2013 was $6.5 million and $9.4 million, respectively.

Since fiscal year 2010, certain of our employees received performance-based restricted stock units ("PRSUs"). These PRSUs are subject to the terms and conditions set forth in each applicable PRSU Agreement and have been granted under our 2008 Equity Incentive Plan. During the six months ended May 31, 2014, 1.4 million PRSUs were granted and 1.8 million vested.

The following table summarizes additional information pertaining to our stock-based compensation from stock options and stock awards which are comprised of restricted stock, restricted stock units and performance-based restricted stock units (in thousands, except grant-date fair value and recognition period):
 
 
 
Three Months Ended
May 31,
 
Six Months Ended
May 31,
 
 
2014
 
2013
 
2014
 
2013
Stock options:
 
 
 
 
 
 
 
 
Options exercised
 
(1,866
)
 
(524
)
 
(2,144
)
 
(988
)
Total intrinsic value of stock options exercised
 
$
22,856

 
$
6,798

 
$
26,951

 
$
14,054

Total unrecognized compensation expense at period-end
 
$
3,782

 
$
9,080

 
$
3,782

 
$
9,080

Weighted-average remaining recognition period at period-end
 
1.2 years

 
1.8 years

 
1.2 years

 
1.8 years

Stock awards (excluding PRSUs):
 
 
 
 
 
 
 
 
Weighted-average grant-date fair value
 
$
19.35

 
$
21.86

 
$
19.84

 
$
22.17

Stock awards granted
 
2,032

 
1,428

 
4,072

 
2,747

Stock awards vested
 
(869
)
 
(917
)
 
(1,366
)
 
(1,474
)
Total unrecognized compensation expense at period-end
 
$
95,506

 
$
116,882

 
$
95,506

 
$
116,882

Weighted-average remaining recognition period at period-end
 
3.3 years

 
2.1 years

 
3.3 years

 
2.1 years