Collateral, Number of Trust Loans

No definition available.

Name:	hrb_CollateralNumberofTrustLoans
Namespace Prefix:	hrb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Initial principal amount of loans securitized.

+ References

No definition available.

+ Details

Name:	hrb_InitialPrincipalAmountOfLoansSecuritized
Namespace Prefix:	hrb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Loans Sold To Trust, With Claims of Breach of Contract and Indemnity

+ References

No definition available.

+ Details

Name:	hrb_LoansSoldToTrustWithClaimsofBreachofContractandIndemnity
Namespace Prefix:	hrb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Loss Contingency, Eligibility, Prior to Lawsuit Filing Date

+ References

No definition available.

+ Details

Name:	hrb_LossContingencyEligibilityPriortoLawsuitFilingDate
Namespace Prefix:	hrb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of loans sold to the trust

+ References

No definition available.

+ Details

Name:	hrb_Numberofloanssoldtothetrust
Namespace Prefix:	hrb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Principal Assets

+ References

No definition available.

+ Details

Name:	hrb_PrincipalAssets
Namespace Prefix:	hrb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Securitization Transactions

+ References

No definition available.

+ Details

Name:	hrb_SecuritizationTransactions
Namespace Prefix:	hrb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of loss contingency liability expected to be resolved after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

+ Details

Name:	us-gaap_LossContingencyAccrualCarryingValueNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of pending claims pertaining to a loss contingency.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349

+ Details

Name:	us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

This is the principal amount outstanding for securitized loans only (across all types of loans).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109247956&loc=d3e107314-111719

+ Details

Name:	us-gaap_PrincipalAmountOutstandingOnLoansSecuritized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	dei_LegalEntityAxis=hrb_SccMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LitigationStatusAxis=us-gaap_PendingLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=hrb_FreeFileLitigationMember
Namespace Prefix:
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Litigation And Other Related Contingencies (Details) $ in Millions		35 Months Ended
	May 06, 2019	Nov. 30, 2007 item	Apr. 30, 2019 USD ($) lawsuit	Apr. 30, 2018 USD ($)	Sep. 30, 2016 loan	Sep. 28, 2012 loan	May 31, 2012 loan
Commitments and Contingencies Disclosure [Abstract]
Accrued obligations under indemnifications			$ 1.9	$ 2.7
Loss Contingencies [Line Items]
Original loans collateralized \| loan							7,500
Number of loans sold to the trust \| loan						96
Loans sold to trust, with claims of breach of contract and indemnity \| loan					649
Number of lawsuits \| lawsuit			21
Securitization transactions \| item		39
SCC
Loss Contingencies [Line Items]
Principal Assets of SCC			$ 289.0
Pending Litigation
Loss Contingencies [Line Items]
Initial principal on loans securitized			14,000.0
Principal outstanding on loans securitized			$ 3,100.0
Subsequent event \| Free File Litigation
Loss Contingencies [Line Items]
Eligibility period prior to filing complaint	4 years