Fair Value Fair Value (Summary Of Carrying Amounts And Estimated Fair Values Of Company's Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2015	Apr. 30, 2014	Jan. 31, 2014	Apr. 30, 2013
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash & cash equivalents	$ 1,321,134	$ 2,185,307	$ 437,404	$ 1,747,584
Cash and cash equivalents, Estimated Fair Value	1,321,134	2,185,307
Cash and cash equivalents - restricted, Carrying Amount	51,085	115,319	44,855
Cash and cash equivalents - restricted, Estimated Fair Value	51,085	115,319
Receivables, net	777,453us-gaap_AccountsReceivableNetCurrent	191,618us-gaap_AccountsReceivableNetCurrent	677,221us-gaap_AccountsReceivableNetCurrent
Receivables, net - short-term, Estimated Fair Value	777,453	191,618
Mortgage loans held for investment, less allowance for loan losses of $9,375, $11,563 and $11,272	245,663	268,428	282,149
Loans Receivable, Fair Value Disclosure	190,422	192,281
Investments in available-for-sale securities, Carrying Amount	7,883	4,329	443,770
Investments in available-for-sale securities, Estimated Fair Value	375,728us-gaap_AvailableForSaleSecurities	427,824us-gaap_AvailableForSaleSecurities	443,770us-gaap_AvailableForSaleSecurities
Accounts Receivable, Net, Noncurrent	102,428us-gaap_AccountsReceivableNetNoncurrent	111,795us-gaap_AccountsReceivableNetNoncurrent	141,084us-gaap_AccountsReceivableNetNoncurrent
Receivables, net - long-term, Estimated Fair Value	102,428	111,795	140,661
Total Portfolio	252,965	277,423	291,325
Deposits, Estimated Fair Value	1,273,283us-gaap_DepositsFairValueDisclosure	765,376us-gaap_DepositsFairValueDisclosure	810,486us-gaap_DepositsFairValueDisclosure
Long-term Debt	506,241us-gaap_LongTermDebt	906,474us-gaap_LongTermDebt
Long-term borrowings, Estimated Fair Value	558,693us-gaap_LongTermDebtFairValue	955,050us-gaap_LongTermDebtFairValue
Contingent consideration payments, carrying amount	12,848	9,206
Contingent consideration payments, estimated fair value	12,848	9,206
Level 1
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents, Estimated Fair Value			437,404
Cash and cash equivalents - restricted, Estimated Fair Value			44,855
Receivables, net - short-term, Estimated Fair Value			679,590
Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans Receivable, Fair Value Disclosure			195,282
Long-term Debt			906,529
Long-term borrowings, Estimated Fair Value			953,944
Contingent consideration payments, carrying amount			10,523
Contingent consideration payments, estimated fair value			10,523
Level 2
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments in available-for-sale securities, Estimated Fair Value			443,770
HRB Bank [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Deposits, Carrying Amount	$ 1,286,582	$ 770,288	$ 808,008

Accounts receivable net current, estimated fair value

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Accounts receivable net, noncurrent, estimated fair value

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Cusiness Combination, Contingent Consideration, at Fair Value

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Customer Deposits

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Restricted cash and investments current, fair value

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Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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Amount due from customers or clients, more than one year from the balance sheet date, for goods or services that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. For a classified balance sheet represents the current portion only (the noncurrent portion has a separate concept); there is a separate and distinct element for unclassified presentations.

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