Condensed Consolidating Financial Statements (Schedule Of Condensed Consolidating Statements Of Cash Flows) (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2014
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities:	$ 532,394	$ 626,608	$ 809,581
Purchases of AFS securities	0	(90,581)	(45,158)
Sales, maturities and payments received on AFS securities	436,471	91,878	107,101
Mortgage loans held for investment, net	33,721	23,886	46,664
Capital expenditures	(99,923)	(123,158)	(147,011)
Payments for business acquisitions, net	(88,776)	(113,252)	(68,428)
Proceeds from notes receivable	0	0	64,865
Franchise loans funded	(22,820)	(49,695)	(63,960)
Payments received on franchise loans	55,007	90,636	87,220
Surrender of company-owned life insurance policies			87,220
Intercompany borrowings (payments)			0
Other, net	15,835	21,354	29,397
Net cash provided by (used in) investing activities	329,515	(148,932)	10,690
Repayments of commercial paper and line of credit borrowings	(1,465,000)	(1,049,136)	(316,000)
Proceeds from short-term borrowings	1,465,000	1,049,136	316,000
Repayments of long-term debt	0	(400,000)	0
Proceeds from issuance of long-term debt	996,831	0	0
Customer banking deposits, net	(326,705)	(28,544)	(163,952)
Transfer of bank deposits	(419,028)	0	0
Dividends paid	(201,688)	(219,960)	(218,980)
Repurchase of common stock	(2,018,338)	(10,449)	(6,106)
Proceeds from exercise of stock options	25,775	16,522	28,246
Intercompany borrowings (payments)		0	0
Other, net	(18,576)	(3,376)	(4,138)
Net cash used in financing activities	(1,961,729)	(645,807)	(364,930)
Effects of exchange rate changes on cash	(10,569)	(9,986)	(17,618)
Net increase (decrease) in cash and cash equivalents	(1,110,389)	(178,117)	437,723
Cash and cash equivalents at beginning of the year	2,007,190	2,185,307	1,747,584
Cash and cash equivalents at end of the year	896,801	2,007,190	2,185,307
H&R Block, Inc. (Guarantor)
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities:			0
Purchases of AFS securities			0
Sales, maturities and payments received on AFS securities			0
Mortgage loans held for investment, net			0
Capital expenditures			0
Payments for business acquisitions, net			0
Proceeds from notes receivable			0
Franchise loans funded			0
Surrender of company-owned life insurance policies			0
Intercompany borrowings (payments)			0
Other, net			0
Net cash provided by (used in) investing activities			0
Repayments of commercial paper and line of credit borrowings		0	0
Proceeds from short-term borrowings		0	0
Repayments of long-term debt		0
Proceeds from issuance of long-term debt	0
Customer banking deposits, net		0	0
Dividends paid	(201,688)	(219,960)	(218,980)
Repurchase of common stock	(2,018,338)	(10,449)	(6,106)
Proceeds from exercise of stock options	25,775	16,522	28,246
Intercompany borrowings (payments)	2,197,954	213,887	196,840
Other, net	(3,703)	0	0
Net cash used in financing activities		0	0
Effects of exchange rate changes on cash		0	0
Net increase (decrease) in cash and cash equivalents		0	0
Cash and cash equivalents at beginning of the year	0	0	0
Cash and cash equivalents at end of the year		0	0
Block Financial (Issuer)
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities:	(55,689)	15,456	35,034
Purchases of AFS securities		(90,381)	(45,158)
Sales, maturities and payments received on AFS securities	430,460	87,922	106,873
Mortgage loans held for investment, net	33,721	23,886	46,664
Capital expenditures	(21)	(224)	(75)
Payments for business acquisitions, net			0
Proceeds from notes receivable			0
Franchise loans funded	(22,479)	(49,220)	(63,960)
Payments received on franchise loans	54,613	90,199
Surrender of company-owned life insurance policies			87,220
Intercompany borrowings (payments)	(1,147,985)	134,094	33,497
Other, net	6,952	12,011	19,746
Net cash provided by (used in) investing activities	(644,739)	208,287	184,807
Repayments of commercial paper and line of credit borrowings	(1,465,000)	(1,049,136)	(316,000)
Proceeds from short-term borrowings	1,465,000	1,049,136	316,000
Repayments of long-term debt		(400,000)
Proceeds from issuance of long-term debt	996,831
Customer banking deposits, net	(327,145)	(29,204)	(165,575)
Transfer of bank deposits	(419,028)
Dividends paid		0	0
Repurchase of common stock		0	0
Proceeds from exercise of stock options		0	0
Intercompany borrowings (payments)		71,162	0
Other, net	(19,282)	0	0
Net cash used in financing activities	231,376	(358,042)	(165,575)
Effects of exchange rate changes on cash		0	0
Net increase (decrease) in cash and cash equivalents	(469,052)	(134,299)	54,266
Cash and cash equivalents at beginning of the year	478,077	612,376	558,110
Cash and cash equivalents at end of the year	9,025	478,077	612,376
Other Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities:	588,083	611,152	774,547
Purchases of AFS securities		(200)	0
Sales, maturities and payments received on AFS securities	6,011	3,956	228
Mortgage loans held for investment, net			0
Capital expenditures	(99,902)	(122,934)	(146,936)
Payments for business acquisitions, net	(88,776)	(113,252)	(68,428)
Proceeds from notes receivable			64,865
Franchise loans funded	(341)	(475)	0
Payments received on franchise loans	394	437
Surrender of company-owned life insurance policies			0
Intercompany borrowings (payments)	(2,197,954)	(285,049)	(196,840)
Other, net	8,883	9,343	9,651
Net cash provided by (used in) investing activities	(2,371,685)	(508,174)	(337,460)
Repayments of commercial paper and line of credit borrowings		0	0
Proceeds from short-term borrowings		0	0
Repayments of long-term debt		0
Proceeds from issuance of long-term debt	0
Customer banking deposits, net		0	0
Dividends paid		0	0
Repurchase of common stock		0	0
Proceeds from exercise of stock options		0	0
Intercompany borrowings (payments)	1,147,985	(134,094)	(33,497)
Other, net	4,409	(3,376)	(4,138)
Net cash used in financing activities	1,152,394	(137,470)	(37,635)
Effects of exchange rate changes on cash	(10,569)	(9,986)	(17,618)
Net increase (decrease) in cash and cash equivalents	(641,777)	(44,478)	381,834
Cash and cash equivalents at beginning of the year	1,529,553	1,574,031	1,192,197
Cash and cash equivalents at end of the year	887,776	1,529,553	1,574,031
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities:			0
Purchases of AFS securities			0
Sales, maturities and payments received on AFS securities			0
Mortgage loans held for investment, net			0
Capital expenditures			0
Payments for business acquisitions, net			0
Proceeds from notes receivable			0
Franchise loans funded			0
Surrender of company-owned life insurance policies			0
Intercompany borrowings (payments)	3,345,939	150,955	163,343
Other, net			0
Net cash provided by (used in) investing activities	3,345,939	150,955	163,343
Repayments of commercial paper and line of credit borrowings		0	0
Proceeds from short-term borrowings		0	0
Repayments of long-term debt		0
Proceeds from issuance of long-term debt	0
Customer banking deposits, net	440	660	1,623
Dividends paid		0	0
Repurchase of common stock		0	0
Proceeds from exercise of stock options		0	0
Intercompany borrowings (payments)	(3,345,939)	(150,955)	(163,343)
Other, net		0	0
Net cash used in financing activities	(3,345,499)	(150,295)	(161,720)
Effects of exchange rate changes on cash		0	0
Net increase (decrease) in cash and cash equivalents	440	660	1,623
Cash and cash equivalents at beginning of the year	(440)	(1,100)	(2,723)
Cash and cash equivalents at end of the year	$ 0	$ (440)	$ (1,100)