Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Nov. 30, 2013	Nov. 30, 2012
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 243,028	$ 345,881
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	409	33
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	1,918	12
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	(3,134)	147
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	373	53
Other Comprehensive Income (Loss), Net of Tax	(434)	245
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	242,594	346,126
Net income attributable to noncontrolling interests	842	2,174
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 241,752	$ 343,952