Receivables (Schedule Of Loans Receivable) (Details) - USD ($) $ in Thousands	Jan. 31, 2016	Apr. 30, 2015	Jan. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross, Current	$ 877,008	$ 222,491	$ 827,312
Accounts Receivable, Gross, Noncurrent	76,471	80,867	102,428
Emerald Advance lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross, Current	402,946	21,908	370,041
Accounts Receivable, Gross, Noncurrent	268	1,913	2,254
Financing Receivable, Gross	403,214
Loans to franchisees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross, Current	63,093	56,603	71,420
Accounts Receivable, Gross, Noncurrent	62,431	64,472	84,770
Cash Back® receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross, Current	5,427	42,680	7,130
Accounts Receivable, Gross, Noncurrent	$ 0	$ 0	$ 0