Document And Entity Information - USD ($)	12 Months Ended
	Apr. 30, 2019	May 31, 2019	Oct. 31, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Apr. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Registrant Name	H&R BLOCK INC
Entity Central Index Key	0000012659
Current Fiscal Year End Date	--04-30
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		201,960,249
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Public Float			$ 5,462,853,571