Stock-based Compensation

6 Months Ended

May 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-based Compensation [Text Block]

Stock-based Compensation

Stock-based compensation expense for the three and six months endedMay 31, 2014 and 2013 was as follows (in thousands):

	Three months ended May 31,				Six months ended May 31,
	2014		2013		2014		2013
Cost of revenue	$	1,511	$	1,294	$	3,371	$	2,976
Selling, general and administrative	34,521		29,505		76,625		67,585
Total stock-based compensation expense	$	36,032	$	30,799	$	79,996	$	70,561

Total income tax benefits recognized for stock-based compensation arrangements were as follows (in thousands):

	Three months ended May 31,				Six months ended May 31,
	2014		2013		2014		2013
Income tax benefits	$	12,322	$	8,208	$	27,384	$	21,926

No stock-based compensation cost was capitalized during the three and six months endedMay 31, 2014 and 2013.

As of May 31, 2014, there was $154.4 million of unrecognized stock-based compensation cost, adjusted for estimated forfeitures, related to unvested stock-based awards that will be recognized over a weighted-average period of approximately 1.7 years. Total unrecognized stock-based compensation cost will be adjusted for future changes in estimated forfeitures and changes in estimated achievement of performance goals.

Restricted Stock Units (RSUs). The following table summarizes RSU activity during the six months ended May 31, 2014:

	Shares		Weighted- Average Grant Date Fair Value
	(in thousands)
Balance at November 30, 2013	3,017		$	92.93
Granted	866		$	113.68
Vested	(1,151	)	$	90.32
Forfeited	(98	)	$	101.84
Balance at May 31, 2014	2,634		$	100.56

The total fair value of RSUs that vested during the six months ended May 31, 2014 was $133.3 million based on the weighted-average fair value on the vesting date.