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Consolidated Statements of Comprehensive Income - Unaudited (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Nov. 30, 2012
Nov. 30, 2011
Net income $ 49,769 $ 45,544
Other comprehensive income (loss), net of tax    
Net unrealized gain (loss) on cash flow hedges 1,287 (2,116)
Foreign currency translation adjustments 3,074 (11,648)
Other comprehensive income (loss) 4,361 (13,764)
Comprehensive income $ 54,130 $ 31,780