Intangible Assets And Goodwill (Range Of Remaining Estimated Useful Lives And Weighted-Average Amortization) (Details)	12 Months Ended
	Aug. 31, 2013
License Rights [Member]
Intangible Assets And Goodwill [Line Items]
Remaining useful life	13 years
Weighted average amortization period	30 years
Curriculum [Member]
Intangible Assets And Goodwill [Line Items]
Weighted average amortization period	26 years
Customer Lists [Member]
Intangible Assets And Goodwill [Line Items]
Remaining useful life	4 years
Weighted average amortization period	14 years
Internally Developed Software [Member]
Intangible Assets And Goodwill [Line Items]
Remaining useful life	3 years
Weighted average amortization period	3 years
Trade Names [Member]
Intangible Assets And Goodwill [Line Items]
Remaining useful life	5 years
Weighted average amortization period	5 years
Minimum [Member] | Curriculum [Member]
Intangible Assets And Goodwill [Line Items]
Remaining useful life	6 years
Maximum [Member] | Curriculum [Member]
Intangible Assets And Goodwill [Line Items]
Remaining useful life	13 years