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v2.3.0.11

Other Noncurrent Assets and Liabilities (Details) (USD $) In Millions | Apr. 30, 2011 | Apr. 30, 2010
--- | --- | ---
Other Noncurrent Assets and Liabilities |  |
Obligation under deferred compensation plan | $ 152.7 | $ 135.5
Cash surrender value of life insurance and other asset held under trust | $ 115.0 | $ 112.4

X
- Definition Cash Surrender Value of Life Insurance and Other Asset Held Under Trust + Details
Name: | hrb_CashSurrenderValueOfLifeInsuranceAndOtherAssetHeldUnderTrust
Namespace Prefix: | hrb
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Other Noncurrent Assets And Liabilities [Abstract] + Details
Name: | hrb_OtherNoncurrentAssetsAndLiabilitiesAbstract
Namespace Prefix: | hrb
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer). + Details
Name: | us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent
Namespace Prefix: | us-gaap
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant