Regulatory Capital Requirements Of HRB Bank (Narrative) (Details) (USD $)	12 Months Ended
	Apr. 30, 2015	Mar. 31, 2015		Apr. 30, 2014	Mar. 31, 2014		Apr. 30, 2013	Apr. 30, 2012	Mar. 31, 2012
Assets Sold under Agreements to Repurchase [Line Items]
Document Fiscal Year Focus	2015
Leverage ratio	0.330
Total risk-based capital ratio, well capitalized		10.00%	[1]		10.00%	[1]			10.00%
Tier 1 Risk-based capital ratio		8.00%	[2]		6.00%	[2]			8.00%
Tier 1 Risk-based leverage ratio		6.50%	[3]		5.00%	[3]			5.00%
Stockholders' equity	$ 1,832,949,000			$ 1,556,549,000			$ 1,263,547,000	$ 1,325,892,000
Dividend and return of capital	250,000,000
Parent Company
Assets Sold under Agreements to Repurchase [Line Items]
Stockholders' equity	1,832,949,000			1,556,549,000
HRB Bank
Assets Sold under Agreements to Repurchase [Line Items]
Stockholders' equity	$ 412,000,000

[1] Total risk-based capital divided by risk-weighted assets.

[2] Tier 1 (core) capital less deduction for low-level recourse and residual interest divided by risk-weighted assets.

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