Mortgage Loans Held For Investment And Related Assets (Schedule Of Allowance For Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2011	Apr. 30, 2011
Mortgage Loans Held For Investment And Related Assets [Abstract]
Based on collateral value method	$ 72,727	$ 69,794
Based on discounted cash flow method	8,576	11,055
Total allowance for loans	$ 81,303	$ 80,849

Allowance for loans losses allocated to impaired loans total

No definition available.

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