Restructuring Charges (Summary of Restructuring Activity) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Nov. 30, 2012
2010 Restructuring Activities [Member]
Restructuring Reserve [Roll Forward]
Balance, December 1, 2011	$ 5,611
Costs incurred	(1,269)
Cash disbursements	(4,290)
Translation adjustments and other	223
Balance, November 30, 2012	275
2010 Restructuring Activities [Member] | Excess Facilities and Other Costs [Member]
Restructuring Reserve [Roll Forward]
Balance, December 1, 2011	4,913
Costs incurred	(1,269)
Cash disbursements	(3,878)
Translation adjustments and other	234
Balance, November 30, 2012	0
2010 Restructuring Activities [Member] | Employee Severance and Related Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance, December 1, 2011	698
Costs incurred	0
Cash disbursements	(412)
Translation adjustments and other	(11)
Balance, November 30, 2012	275
2012 Restructuring Activities [Member]
Restructuring Reserve [Roll Forward]
Balance, December 1, 2011	0
Costs incurred	19,011
Cash disbursements	(11,133)
Asset impairment	(898)
Translation adjustments and other	52
Balance, November 30, 2012	7,032
2012 Restructuring Activities [Member] | Excess Facilities and Other Costs [Member]
Restructuring Reserve [Roll Forward]
Balance, December 1, 2011	0
Costs incurred	2,644
Cash disbursements	(1,136)
Asset impairment	(898)
Translation adjustments and other	(7)
Balance, November 30, 2012	603
2012 Restructuring Activities [Member] | Employee Severance and Related Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance, December 1, 2011	0
Costs incurred	16,367
Cash disbursements	(9,997)
Asset impairment	0
Translation adjustments and other	59
Balance, November 30, 2012	$ 6,429