Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2015	Apr. 30, 2014
Income Tax Disclosure [Abstract]
Accrued expenses	$ 9,301	$ 11,541
Deferred revenue	32,392us-gaap_DeferredTaxAssetsDeferredIncome	22,511us-gaap_DeferredTaxAssetsDeferredIncome
Allowance for credit losses and related reserves	107,554	115,145
Internally-developed software	46,376	0
Valuation allowance	(15,735)	(10,837)
Current	179,888us-gaap_DeferredTaxAssetsNetCurrent	138,360us-gaap_DeferredTaxAssetsNetCurrent
Deferred and stock-based compensation	21,776	21,348
Deferred revenue	7,212	8,090
Net operating loss carry-forward	27,285	21,434
Federal tax benefits related to state unrecognized tax benefits	26,862	28,601
Other	7,278hrb_DeferredTaxAssetsOtherNoncurrent	9,861hrb_DeferredTaxAssetsOtherNoncurrent
Valuation allowance	(9,202)	(8,339)
Noncurrent	81,211us-gaap_DeferredTaxAssetsNetNoncurrent	80,995us-gaap_DeferredTaxAssetsNetNoncurrent
Deferred tax asset	261,099us-gaap_DeferredTaxAssetsNet	219,355us-gaap_DeferredTaxAssetsNet
Prepaid expenses	(5,621)	(3,033)
Current	(5,621)us-gaap_DeferredTaxLiabilitiesCurrent	(3,033)us-gaap_DeferredTaxLiabilitiesCurrent
Property and equipment	(25,589)	(28,610)
Mortgage-related investment	(1,674)	(15,441)
Intangibles	(93,700)	(59,881)
Noncurrent	120,963	103,932
Noncurrent	(142,586)	(157,465)
Net deferred tax assets	$ 134,515us-gaap_DeferredTaxAssetsLiabilitiesNet	$ 112,390us-gaap_DeferredTaxAssetsLiabilitiesNet

Deferred tax asset, deferred income, noncurrent

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Deferred Tax Assets Other Noncurrent

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Deferred Tax Liabilities Basis Difference In Mortgage Related Investment

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, before jurisdictional netting.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer.

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Amount after allocation of valuation allowances of noncurrent deferred tax asset attributable to deductible temporary differences and carryforwards. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer).

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Amount, before allocation of valuation allowances, of deferred tax asset attributable to deductible differences from reserves and accruals, compensation and benefit costs, and other provisions, reserves, and allowances.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from loss reserves other than estimated credit losses.

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Amount of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized expected to be realized or consumed after one year (or the normal operating cycle, if longer).

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences, netted by jurisdiction and classified as current.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets including goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.

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Gross amount of noncurrent deferred tax liabilities, which result from applying the applicable tax rate to taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax.

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences, netted by jurisdiction and classified as noncurrent.

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Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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