Accumulated Other Comprehensive Income (Loss) (AOCI by Components) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Nov. 30, 2013	Nov. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, August 31, 2013	$ (27,176)
Other comprehensive income (loss) before reclassifications	18,375
Amounts reclassified from AOCI	978
Net other comprehensive income (loss)	19,353	23,412
Balance, November 30, 2013	(7,823)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, August 31, 2013	(27,477)
Other comprehensive income (loss) before reclassifications	19,442
Amounts reclassified from AOCI	0
Net other comprehensive income (loss)	19,442
Balance, November 30, 2013	(8,035)
Unrealized Gain (Loss) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, August 31, 2013	3,594
Other comprehensive income (loss) before reclassifications	(1,617)
Amounts reclassified from AOCI	980
Net other comprehensive income (loss)	(637)
Balance, November 30, 2013	2,957
Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, August 31, 2013	(3,293)
Other comprehensive income (loss) before reclassifications	550
Amounts reclassified from AOCI	(2)
Net other comprehensive income (loss)	548
Balance, November 30, 2013	$ (2,745)