Commitments And Contingencies (Narrative) (Details) (USD $)	Jul. 31, 2014	Apr. 30, 2014	Jul. 31, 2013
Commitments And Contingencies [Line Items]
Standard guarantee accrual amount	$ 10,600,000	$ 11,400,000	$ 15,700,000
Contingent business acquisition obligations	9,168,000	9,206,000
Lines of credit, total obligation	91,300,000
Remaining franchise equity lines of credit-undrawn commitment	45,600,000
Maximum funding by facility	1,500,000,000
Financing Receivables, Line of Credit Facility, Compensating Balances	215,300,000
Level 3
Commitments And Contingencies [Line Items]
Contingent business acquisition obligations			$ 10,766,000