Stock-based Compensation (Tables)

6 Months Ended

May 31, 2014

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

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

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

Share Based Compensation Income Tax Benefit [Table Text Block]

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

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

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