Stock-based Compensation (Tables)

6 Months Ended

May 31, 2016

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, 2016 and 2015 was as follows (in thousands):

	Three months ended May 31,				Six months ended May 31,
	2016		2015		2016		2015
Cost of revenue	$	1,426	$	1,444	$	2,715	$	2,858
Selling, general and administrative	30,668		31,282		59,475		61,741
Total stock-based compensation expense	$	32,094	$	32,726	$	62,190	$	64,599

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,
	2016		2015		2016		2015
Income tax benefits	$	10,232	$	10,498	$	19,810	$	20,722

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

The following table summarizes RSU activity during the six months endedMay 31, 2016:

	Shares		Weighted- Average Grant Date Fair Value
	(in thousands)
Balance at November 30, 2015	2,441		$	108.74
Granted	540		$	105.55
Vested	(881	)	$	109.14
Forfeited	(122	)	$	114.73
Balance at May 31, 2016	1,978		$	107.32