Restructuring (Summary of Restructuring Activity) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2011
Restructuring Reserve [Roll Forward]
Restructuring expenses	$ 11,983	$ 7,204	$ 3,302
2010 Restructuring Activities [Member]
Restructuring Reserve [Roll Forward]
Balance, December 1, 2012	275
Restructuring expenses	0
Cash disbursements	(275)
Translation adjustments and other	0
Balance, November 30, 2013	0
2010 Restructuring Activities [Member] | Excess Facilities and Other Costs [Member]
Restructuring Reserve [Roll Forward]
Balance, December 1, 2012	0
Restructuring expenses	0
Cash disbursements	0
Translation adjustments and other	0
Balance, November 30, 2013	0
2010 Restructuring Activities [Member] | Employee Severance and Related Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance, December 1, 2012	275
Restructuring expenses	0
Cash disbursements	(275)
Translation adjustments and other	0
Balance, November 30, 2013	0
2012 Restructuring Activities [Member]
Restructuring Reserve [Roll Forward]
Balance, December 1, 2012	7,032
Restructuring expenses	4,297
Cash disbursements	(10,364)
Asset impairment	(111)
Translation adjustments and other	52
Balance, November 30, 2013	906
2012 Restructuring Activities [Member] | Excess Facilities and Other Costs [Member]
Restructuring Reserve [Roll Forward]
Balance, December 1, 2012	603
Restructuring expenses	1,545
Cash disbursements	(1,423)
Asset impairment	(111)
Translation adjustments and other	1
Balance, November 30, 2013	615
2012 Restructuring Activities [Member] | Employee Severance and Related Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance, December 1, 2012	6,429
Restructuring expenses	2,752
Cash disbursements	(8,941)
Asset impairment	0
Translation adjustments and other	51
Balance, November 30, 2013	291
2013 Restructuring Activities [Member]
Restructuring Reserve [Roll Forward]
Balance, December 1, 2012	0
Restructuring expenses	8,720
Cash disbursements	(7,087)
Translation adjustments and other	13
Balance, November 30, 2013	1,646
2013 Restructuring Activities [Member] | Excess Facilities and Other Costs [Member]
Restructuring Reserve [Roll Forward]
Balance, December 1, 2012	0
Restructuring expenses	1,126
Cash disbursements	(510)
Translation adjustments and other	(47)
Balance, November 30, 2013	569
2013 Restructuring Activities [Member] | Employee Severance and Related Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance, December 1, 2012	0
Restructuring expenses	7,594
Cash disbursements	(6,577)
Translation adjustments and other	60
Balance, November 30, 2013	$ 1,077