Description of Business and Summary of Significant Accounting Policies (Summary of Changes in AOCI) (Details 4) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 86,962
Other comprehensive income (loss) before reclassifications	(151,894)
Amounts reclassified from AOCI	14,078
Total other comprehensive (loss) income	(137,816)	$ 5,714	$ (25,027)
Ending balance	(50,854)	86,962
Foreign currency translation adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	123,411
Other comprehensive income (loss) before reclassifications	(116,745)
Total other comprehensive (loss) income	(116,745)
Ending balance	6,666	123,411
Derivative instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	4,572
Other comprehensive income (loss) before reclassifications	(29,107)
Amounts reclassified from AOCI	12,502
Total other comprehensive (loss) income	(16,605)
Ending balance	(12,033)	4,572
Actuarial loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(40,704)
Other comprehensive income (loss) before reclassifications	8,357
Amounts reclassified from AOCI	1,723
Total other comprehensive (loss) income	10,080
Ending balance	(30,624)	(40,704)
Prior service cost
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	1,196
Other comprehensive income (loss) before reclassifications	5
Amounts reclassified from AOCI	(147)
Total other comprehensive (loss) income	(142)
Ending balance	1,054	1,196
Unrealized loss on available for sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(1,513)
Other comprehensive income (loss) before reclassifications	(14,404)
Total other comprehensive (loss) income	(14,404)
Ending balance	$ (15,917)	$ (1,513)