Fair Value Measurement Fair Value Of Financial Instruments (Summary Of Carrying Amounts And Estimated Fair Values Of Company's Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2013	Apr. 30, 2013	Jul. 31, 2012	Apr. 30, 2012	Jul. 31, 2012 Level 1	Jul. 31, 2012 Level 3	Jul. 31, 2012 Level 2	Jul. 31, 2012 Level 1 And 3	Jul. 31, 2013 Mcgladrey Pullen Llp [Member]	Apr. 30, 2013 Mcgladrey Pullen Llp [Member]	Jul. 31, 2012 Mcgladrey Pullen Llp [Member]	Jul. 31, 2013 HRB Bank [Member]	Jul. 11, 2013 HRB Bank [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash & cash equivalents	$ 1,163,876	$ 1,747,584	$ 939,871	$ 1,944,334
Cash and cash equivalents, Estimated Fair Value	1,163,876	1,747,584			939,871
Cash and cash equivalents - restricted, Carrying Amount	55,477	117,837	43,109
Cash and cash equivalents - restricted, Estimated Fair Value	55,477	117,837			43,109
Receivables, net - short-term, Carrying Amount	121,309	206,835	116,357
Receivables, net - short-term, Estimated Fair Value	124,218	206,810			116,357
Mortgage loans held for sale	7,608	0	0
Mortgage loans held for investment, less allowance for loan losses of $15,514, $22,185 and $14,314	309,681	338,789	386,759
Loans Receivable, Fair Value Disclosure	194,882	210,858				238,658
Mortgage loans held for investment, net, Estimated Fair Value	7,608	0	0
Investments in available-for-sale securities, Carrying Amount	487,033	486,876	380,765				381,791
Investments in available-for-sale securities, Estimated Fair Value	487,033	486,876	381,791				381,791
Receivables, net - long-term, Carrying Amount	127,855	125,048						128,930
Receivables, net - long-term, Estimated Fair Value	132,589	134,283						128,930
Note receivable (including interest), Carrying Amount						56,917
Note receivable (including interest), Estimated Fair Value	68,973	69,472				62,748
Total Portfolio	322,454	350,235	405,670						61,561	60,352	56,900
Deposits, Carrying Amount								653,681				759,745	938,331
Deposits, Estimated Fair Value	760,449	934,019						653,382
Long-term borrowings, Carrying Amount	906,632	906,680				1,009,634
Long-term borrowings, Estimated Fair Value	931,300	964,630				1,037,169
Contingent business acquisition obligations	10,766	11,277				7,090
Cusiness Combination, Contingent Consideration, at Fair Value	$ 10,766	$ 11,277				$ 7,090