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Supplemental Cash Flow Information (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Nov. 30, 2013
Nov. 30, 2012
Nov. 30, 2011
Nov. 30, 2010
Supplemental Cash Flow Information [Abstract]        
Cash and Cash Equivalents, at Carrying Value $ 258,367 $ 345,008 $ 234,685 $ 200,735
Interest paid 39,023 19,315 8,274  
Income tax payments (refunds), net $ (9,458) $ 24,279 $ 38,297