Mortgage Loans Held For Investment And Related Assets (Information Related To Activities Of Non-Performing Assets) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Oct. 31, 2011	Oct. 31, 2010
Mortgage Loans Held For Investment And Related Assets [Line Items]
Average impaired loans	$ 262,405	$ 320,371
Interest income on impaired loans	3,314	3,353
Interest income on impaired loans recognized on a cash basis on non-accrual status	3,197	3,146
Purchased From SCC [Member]
Mortgage Loans Held For Investment And Related Assets [Line Items]
Average impaired loans	226,880
Interest income on impaired loans	3,076
Interest income on impaired loans recognized on a cash basis on non-accrual status	2,973
All Other [Member]
Mortgage Loans Held For Investment And Related Assets [Line Items]
Average impaired loans	35,525
Interest income on impaired loans	238
Interest income on impaired loans recognized on a cash basis on non-accrual status	$ 224

Name:	hrb_MortgageLoansHeldForInvestmentAndRelatedAssetsLineItems
Namespace Prefix:	hrb_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The average recorded investment related to impaired financing receivables.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5212-111524

-Subparagraph (c)(1)

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5258-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The interest income recognized during the time within that period that the financing receivables were impaired.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The interest income recognized on a cash-basis method of accounting during the time within that period that the financing receivables were impaired.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration