RECEIVABLES (Schedule of Short-Term Receivables) (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Apr. 30, 2020	Jan. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Short-term	$ 563,089	$ 133,197	$ 819,946
Long-term	49,130	51,717	54,048
Loans to franchisees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Short-term	24,558	25,397	36,372
Long-term	39,106	31,329	42,079
Receivables for U.S. assisted and DIY tax preparation and related fees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Short-term	168,905	47,030	316,987
Long-term	3,111	3,112	3,716
H&R Block Instant RefundTM receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Short-term	1,398	15,031	6,733
Long-term	314	1,325	563
H&R Block Emerald Advance® lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Short-term	314,015	10,001	373,271
Long-term	4,937	14,081	6,179
Software receivables from retailers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Short-term	4,434	7,341	8,101
Long-term	0	0	0
Royalties and other receivables from franchisees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Short-term	31,346	9,861	55,645
Long-term	214	42	67
Wave payment processing receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Short-term	2,633	3,200	3,363
Long-term	0	0	0
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Short-term	15,800	15,336	19,474
Long-term	$ 1,448	$ 1,828	$ 1,444