Document And Entity Information - shares	6 Months Ended
	Oct. 31, 2018	Nov. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Oct. 31, 2018
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
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 Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		205,527,815