Receivables (Schedule Of Short-Term Receivables) (Details) - USD ($) $ in Thousands	Oct. 31, 2018	Apr. 30, 2018	Oct. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, short-term	$ 61,286	$ 146,774	$ 77,750
Receivable, long-term	60,529	52,434	62,549
Loans to franchisees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, short-term	26,964	30,596	37,953
Receivable, long-term	38,489	35,212	42,443
Receivables for U.S assisted and DIY tax preparation and related fees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, short-term	6,033	41,572	3,611
Receivable, long-term	5,503	5,503	6,316
Instant Refund® receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, short-term	0	27,192	0
Receivable, long-term	2,008	2,057	0
H&R Block Emerald Advance® lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, short-term	7,418	15,642	11,095
Receivable, long-term	10,988	5,754	9,209
Software receivables from retailers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, short-term	552	6,769	484
Receivable, long-term	0	0	0
Royalties and other receivables from franchisees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, short-term	9,103	9,239	10,198
Receivable, long-term	710	761	790
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, short-term	11,216	15,764	14,409
Receivable, long-term	$ 2,831	$ 3,147	$ 3,791