Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Nov. 30, 2012	Nov. 30, 2011
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 345,881	$ 488,882
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	33	13
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	12	(198)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	147	230
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	53	(4,818)
Other Comprehensive Income (Loss), Net of Tax	245	(4,773)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	346,126	484,109
Net income attributable to noncontrolling interests	2,174	72,674
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 343,952	$ 411,435