Regulatory Capital Requirements Of HRB Bank (Narrative) (Details) (USD $)	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011	Mar. 31, 2013		Mar. 31, 2012		Apr. 30, 2010
Assets Sold under Agreements to Repurchase [Line Items]
Stockholders' Equity Attributable to Parent	$ 1,263,547,000	$ 1,325,892,000	$ 1,449,574,000					$ 1,440,630,000
Leverage ratio	0.339
Total risk-based capital ratio, well capitalized				10.00%	[1]	10.00%	[1]
Tier 1 Risk-based capital ratio				6.00%	[2]	6.00%	[2]
Tier 1 Risk-based leverage ratio				5.00%	[3]	5.00%	[3]
Minimum leverage capital per calendar quarter	12.00%
Capital Contribution For Capital Adequacy		400,000,000	235,000,000
Dividend and return of capital		400,000,000	262,500,000
HRB Bank [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Stockholders' Equity Attributable to Parent	$ 512,400,000

[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.

[3] Tier 1 (core) capital divided by adjusted total assets.