Condensed Consolidating Financial Statements (Schedule Of Condensed Consolidating Income Statements) (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2017
Condensed Financial Statements, Captions [Line Items]
Revenues	$ 3,094,881	$ 3,159,931	$ 3,036,314
Costs of revenues	1,756,922	1,739,729	1,644,377
Selling, general and administrative	722,167	668,152	675,953
Total operating expenses	2,479,089	2,407,881	2,320,330
Other income, net	16,419	6,054	6,254
Interest expense on external borrowings	(87,051)	(89,372)	(92,951)
Income from continuing operations before income taxes	545,160	668,732	629,287
Income taxes (benefit)	99,904	41,823	208,370
Net income from continuing operations	445,256	626,909	420,917
Net income(loss) from discontinued operations	(22,747)	(13,760)	(11,972)
Net income	422,509	613,149	408,945
Other comprehensive income	(6,113)	996	(4,066)
Comprehensive income	416,396	614,145	404,879
Eliminations
Condensed Financial Statements, Captions [Line Items]
Revenues	(60,576)	(60,998)	(27,610)
Costs of revenues	(39,322)	(38,736)	(7,709)
Selling, general and administrative	(21,254)	(22,262)	(19,901)
Total operating expenses	(60,576)	(60,998)	(27,610)
Other income, net	(487,784)	(660,120)	(428,433)
Income from continuing operations before income taxes	(487,784)	(660,120)	(428,433)
Net income from continuing operations	(487,784)	(660,120)	(428,433)
Net income	(487,784)	(660,120)	(428,433)
Other comprehensive income	6,113	(996)	4,066
Comprehensive income	(481,671)	(661,116)	(424,367)
H&R Block, Inc. (Guarantor) | Reportable entities
Condensed Financial Statements, Captions [Line Items]
Selling, general and administrative	1,476
Total operating expenses	1,476
Other income, net	408,496	599,202	399,996
Income from continuing operations before income taxes	407,020	599,202	399,996
Income taxes (benefit)	(15,489)	(13,947)	(8,949)
Net income from continuing operations	422,509	613,149	408,945
Net income(loss) from discontinued operations	0
Net income	422,509	613,149	408,945
Other comprehensive income	(6,113)	996	(4,066)
Comprehensive income	416,396	614,145	404,879
Block Financial (Issuer) | Reportable entities
Condensed Financial Statements, Captions [Line Items]
Revenues	188,488	192,353	186,659
Costs of revenues	78,230	81,746	71,661
Selling, general and administrative	25,031	25,691	24,201
Total operating expenses	103,261	107,437	95,862
Other income, net	38,689	30,305	25,361
Interest expense on external borrowings	(86,904)	(89,068)	(92,263)
Income from continuing operations before income taxes	37,012	26,153	23,895
Income taxes (benefit)	7,847	(5,203)	6,472
Net income from continuing operations	29,165	31,356	17,423
Net income(loss) from discontinued operations	(22,747)	(13,755)	(12,705)
Net income	6,418	17,601	4,718
Comprehensive income	6,418	17,601	4,718
Other Subsidiaries | Reportable entities
Condensed Financial Statements, Captions [Line Items]
Revenues	2,966,969	3,028,576	2,877,265
Costs of revenues	1,718,014	1,696,719	1,580,425
Selling, general and administrative	716,914	664,723	671,653
Total operating expenses	2,434,928	2,361,442	2,252,078
Other income, net	57,018	36,667	9,330
Interest expense on external borrowings	(147)	(304)	(688)
Income from continuing operations before income taxes	588,912	703,497	633,829
Income taxes (benefit)	107,546	60,973	210,847
Net income from continuing operations	481,366	642,524	422,982
Net income(loss) from discontinued operations		(5)	733
Net income	481,366	642,519	423,715
Other comprehensive income	(6,113)	996	(4,066)
Comprehensive income	$ 475,253	$ 643,515	$ 419,649