Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended									9 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014 Accumulated Translation Adjustment [Member]	Aug. 31, 2014 Accumulated Defined Benefit Plans Adjustment [Member]	Aug. 31, 2014 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	May 31, 2014 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	Aug. 31, 2013 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	May 31, 2013 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	Nov. 30, 2012 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	Aug. 31, 2014 Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at November 30, 2013			$ (56,961)		$ (46,565)	$ (8,197)	$ (2,199)	$ (6,963)	$ (1,350)	$ (1,664)	$ (2,225)	$ (56,961)
Foreign currency translation adjustment	(3,557)	296	(473)	(32,792)	(473)
Reclassifications from AOCI to income, foreign currency translation					0
Other comprehensive income (loss) before reclassifications, net pension and OPEB liability						1,329
Reclassifications from AOCI to income, net pension and OPEB liability						(2,214)
Unrealized gain (loss) on hedging activities	276	314	(4,488)	875			(5,604)
Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion							1,116
Other comprehensive income (loss) before reclassifications												(4,748)
Reclassifications from AOCI to income												(1,098)
Balance at August 31, 2014	$ (62,807)		$ (62,807)		$ (47,038)	$ (9,082)	$ (6,687)	$ (6,963)	$ (1,350)	$ (1,664)	$ (2,225)	$ (62,807)