Consolidated Statements Of Income And Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2017
Income Statement [Abstract]
Tax benefits from discontinued operations	$ 6,788	$ 7,016	$ 6,986

Discontinued Operation, Tax Effect of Operations of Discontinued Operation

No definition available.

Name:	hrb_DiscontinuedOperationTaxEffectOfOperationsOfDiscontinuedOperation
Namespace Prefix:	hrb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration