CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (Balance Sheets) (Details) - USD ($) $ in Thousands	Jan. 31, 2020	Oct. 31, 2019	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2019	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018
Condensed Financial Statements, Captions [Line Items]
Cash & cash equivalents	$ 192,340			$ 1,572,150	$ 203,226
Cash and cash equivalents - restricted	169,447			135,577	101,903
Receivables, net	819,946			138,965	758,217
Prepaid expenses and other current assets	120,229			146,667	171,306
Total current assets	1,301,962			1,993,359	1,234,652
Property and equipment, net	197,569			212,092	220,505
Operating lease right of use asset	463,777			0	0
Intangible assets, net	433,074			342,493	356,952
Goodwill	838,830			519,937	520,005			$ 507,871
Deferred tax assets and income taxes receivable	134,901			141,979	141,366
Investments in subsidiaries	0
Amounts due from affiliates	0			0	0
Other noncurrent assets	82,317			90,085	95,326
Total assets	3,452,430			3,299,945	2,568,806
Accounts payable and accrued expenses	156,766			249,525	202,101
Accrued salaries, wages and payroll taxes	117,459			196,527	140,902
Accrued income taxes and reserves for uncertain tax positions	36,242			271,973	49,009
Current portion of long-term debt	649,022
Operating lease liabilities	187,890			0	0
Deferred revenue and other current liabilities	190,242			204,976	195,634
Total current liabilities	1,337,621			923,001	587,646
Long-term debt and line of credit borrowings	1,880,589			1,492,629	1,876,989
Deferred tax liabilities and reserves for uncertain tax positions	172,954			197,906	214,217
Operating lease liabilities	289,299			0	0
Deferred revenue and other noncurrent liabilities	90,346			144,882	103,545
Amounts due to affiliates	0
Total liabilities	3,770,809			2,758,418	2,782,397
Stockholders' equity (deficiency)	(318,379)	$ (75,747)	$ 290,804	541,527	(213,591)	$ (31,325)	$ 192,009	$ 393,711
Total liabilities and stockholders' equity	3,452,430			3,299,945	2,568,806
Eliminations
Condensed Financial Statements, Captions [Line Items]
Cash & cash equivalents	0
Cash and cash equivalents - restricted	0
Receivables, net	0
Prepaid expenses and other current assets	0
Total current assets	0
Property and equipment, net	0
Operating lease right of use asset	0
Intangible assets, net	0
Goodwill	0
Deferred tax assets and income taxes receivable	0
Investments in subsidiaries	(3,074,371)			(3,515,742)	(2,588,620)
Amounts due from affiliates	(5,465,609)			(4,378,575)	(4,239,361)
Other noncurrent assets	0
Total assets	(8,539,980)			(7,894,317)	(6,827,981)
Accounts payable and accrued expenses	0
Accrued salaries, wages and payroll taxes	0
Accrued income taxes and reserves for uncertain tax positions	0
Operating lease liabilities	0
Deferred revenue and other current liabilities	0
Total current liabilities	0
Long-term debt and line of credit borrowings	0
Deferred tax liabilities and reserves for uncertain tax positions	0
Operating lease liabilities	0
Deferred revenue and other noncurrent liabilities	0
Amounts due to affiliates	(5,465,609)			(4,378,575)	(4,239,361)
Total liabilities	(5,465,609)			(4,378,575)	(4,239,361)
Stockholders' equity (deficiency)	(3,074,371)			(3,515,742)	(2,588,620)
Total liabilities and stockholders' equity	(8,539,980)			(7,894,317)	(6,827,981)
H&R Block, Inc. (Guarantor) | Reportable entities
Condensed Financial Statements, Captions [Line Items]
Cash & cash equivalents	0
Cash and cash equivalents - restricted	0
Receivables, net	0
Prepaid expenses and other current assets	2,811			2,812	2,811
Total current assets	2,811			2,812	2,811
Property and equipment, net	0
Operating lease right of use asset	0
Intangible assets, net	0
Goodwill	0
Deferred tax assets and income taxes receivable	3,261			3,218	1,794
Investments in subsidiaries	2,955,158			3,378,009	2,485,857
Amounts due from affiliates	0			0	0
Other noncurrent assets	0
Total assets	2,961,230			3,384,039	2,490,462
Accounts payable and accrued expenses	1,952			2,272	14,823
Accrued salaries, wages and payroll taxes	0
Accrued income taxes and reserves for uncertain tax positions	0
Operating lease liabilities	0
Deferred revenue and other current liabilities	0
Total current liabilities	1,952			2,272	14,823
Long-term debt and line of credit borrowings	0
Deferred tax liabilities and reserves for uncertain tax positions	24,623			24,623	9,285
Operating lease liabilities	0
Deferred revenue and other noncurrent liabilities	0
Amounts due to affiliates	3,253,034			2,815,617	2,679,945
Total liabilities	3,279,609			2,842,512	2,704,053
Stockholders' equity (deficiency)	(318,379)			541,527	(213,591)
Total liabilities and stockholders' equity	2,961,230			3,384,039	2,490,462
Block Financial (Issuer) | Reportable entities
Condensed Financial Statements, Captions [Line Items]
Cash & cash equivalents	6,306			4,109	4,722
Cash and cash equivalents - restricted	0
Receivables, net	410,920			35,901	392,257
Prepaid expenses and other current assets	2,628			1,695	2,637
Total current assets	419,854			41,705	399,616
Property and equipment, net	316			552	466
Operating lease right of use asset	257
Intangible assets, net	0
Goodwill	0
Deferred tax assets and income taxes receivable	15,953			15,953	17,941
Investments in subsidiaries	0
Amounts due from affiliates	2,212,575			1,562,958	1,559,416
Other noncurrent assets	53,975			54,976	57,230
Total assets	2,702,930			1,676,144	2,034,669
Accounts payable and accrued expenses	14,407			19,735	18,475
Accrued salaries, wages and payroll taxes	1,676			1,564	1,333
Accrued income taxes and reserves for uncertain tax positions	1,060			1,060	1,060
Current portion of long-term debt	649,022
Operating lease liabilities	153
Deferred revenue and other current liabilities	30,695			21,144	28,441
Total current liabilities	697,013			43,503	49,309
Long-term debt and line of credit borrowings	1,880,589			1,492,629	1,876,989
Deferred tax liabilities and reserves for uncertain tax positions	1,486			1,486	3,989
Operating lease liabilities	108
Deferred revenue and other noncurrent liabilities	4,521			793	1,619
Amounts due to affiliates	0
Total liabilities	2,583,717			1,538,411	1,931,906
Stockholders' equity (deficiency)	119,213			137,733	102,763
Total liabilities and stockholders' equity	2,702,930			1,676,144	2,034,669
Other Subsidiaries | Reportable entities
Condensed Financial Statements, Captions [Line Items]
Cash & cash equivalents	186,034			1,568,041	198,504
Cash and cash equivalents - restricted	169,447			135,577	101,903
Receivables, net	409,026			103,064	365,960
Prepaid expenses and other current assets	114,790			142,160	165,858
Total current assets	879,297			1,948,842	832,225
Property and equipment, net	197,253			211,540	220,039
Operating lease right of use asset	463,520
Intangible assets, net	433,074			342,493	356,952
Goodwill	838,830			519,937	520,005
Deferred tax assets and income taxes receivable	115,687			122,808	121,631
Investments in subsidiaries	119,213			137,733	102,763
Amounts due from affiliates	3,253,034			2,815,617	2,679,945
Other noncurrent assets	28,342			35,109	38,096
Total assets	6,328,250			6,134,079	4,871,656
Accounts payable and accrued expenses	140,407			227,518	168,803
Accrued salaries, wages and payroll taxes	115,783			194,963	139,569
Accrued income taxes and reserves for uncertain tax positions	35,182			270,913	47,949
Operating lease liabilities	187,737
Deferred revenue and other current liabilities	159,547			183,832	167,193
Total current liabilities	638,656			877,226	523,514
Long-term debt and line of credit borrowings	0
Deferred tax liabilities and reserves for uncertain tax positions	146,845			171,797	200,943
Operating lease liabilities	289,191
Deferred revenue and other noncurrent liabilities	85,825			144,089	101,926
Amounts due to affiliates	2,212,575			1,562,958	1,559,416
Total liabilities	3,373,092			2,756,070	2,385,799
Stockholders' equity (deficiency)	2,955,158			3,378,009	2,485,857
Total liabilities and stockholders' equity	$ 6,328,250			$ 6,134,079	$ 4,871,656