Fair Value Of Financial Instruments (Schedule Of Growth Rates To Fair Value Contingent Consideration) (Details) - Fair Value, Inputs, Level 3 [Member]	12 Months Ended
	Aug. 31, 2018
Likely [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
RGP growth rate - Year 1	14.80%
RGP growth rate - Year 2	10.00%
RGP growth rate - Year 3	10.00%
Add-on services growth rate - Year 1	60.00%
Add-on services growth rate - Year 2	50.00%
Add-on services growth rate - Year 3	40.00%
Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
RGP growth rate - Year 1	(12.00%)
RGP growth rate - Year 2	(12.00%)
RGP growth rate - Year 3	(12.00%)
Add-on services growth rate - Year 1	(20.00%)
Add-on services growth rate - Year 2	(20.00%)
Add-on services growth rate - Year 3	(20.00%)
Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
RGP growth rate - Year 1	35.00%
RGP growth rate - Year 2	35.00%
RGP growth rate - Year 3	35.00%
Add-on services growth rate - Year 1	130.00%
Add-on services growth rate - Year 2	130.00%
Add-on services growth rate - Year 3	130.00%