Mortgage Loans Held For Investment And Related Assets (Schedule Of Allowance For Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013	Apr. 30, 2012
Mortgage Loans Held For Investment And Related Assets [Abstract]
Based on collateral value method	$ 3,762	$ 9,551
Based on discounted cash flow method	4,924	7,752
Total allowance for loans	$ 8,686	$ 17,303

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