Mortgage Loans Held For Investment And Related Assets (Schedule Of Allowance For Impaired Loans) (Details) (USD $) In Thousands	Jul. 31, 2011	Apr. 30, 2011
Mortgage Loans Held For Investment And Related Assets
Based on collateral value method	$ 70,890	$ 69,794
Based on discounted cash flow method	9,499	11,055
Total allowance for loans	$ 80,389	$ 80,849

Name:

hrb_AllowanceForLoansLossesAllocatedToImpairedLoansTotal

Namespace Prefix:

hrb

Data Type:

xbrli:monetaryItemType

Balance Type:

debit

Period Type:

instant