Regulatory Capital Requirements (HRB Bank's Regulatory Capital Requirements) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jul. 31, 2014	Jun. 30, 2014		Apr. 30, 2014	Mar. 31, 2014		Jun. 30, 2013
Banking and Thrift [Abstract]
Total risk-based capital ratio, Amount		$ 590,393	[1]		$ 563,899	[1]	$ 508,667	[1]
Total risk-based capital ratio		191.20%	[1]		168.50%	[1]	132.50%	[1]
Total risk-based capital ratio, Minimum Capital Requirement, Amount		25,593	[1]		26,771	[1]	30,701	[1]
Total risk-based capital ratio, Minimum Capital Requirement, Ratio		8.00%	[1]		8.00%	[1]	8.00%	[1]
Total risk-based capital ratio, Minimum to be Well Capitalized, Amount		31,991	[1]		33,464	[1]	38,376	[1]
Total risk-based capital ratio, Minimum to be Well Capitalized, Ratio		10.00%	[1]		10.00%	[1]	10.00%	[1]
Tier 1 risk-based capital ratio, Amount		586,394	[2]		559,572	[2]	503,536	[2]
Tier 1 risk-based capital ratio		189.90%	[2]		167.20%	[2]	131.20%	[2]
Tier 1 risk-based capital ratio, Minimum to be Well Capitalized, Amount		19,195	[2]		20,079	[2]	23,026	[2]
Tier 1 risk-based capital ratio, Minimum to be Well Capitalized, Ratio		6.00%	[2]		6.00%	[2]	6.00%	[2]
Tier 1 capital ratio (leverage), Amount		586,394	[3]		559,572	[3]	503,536	[3]
Tier 1 capital ratio (leverage)		51.00%	[3]		32.10%	[3]	36.90%	[3]
Tier 1 capital ratio (leverage), Minimum Capital Requirement, Amount		138,123	[3]		209,041	[3]	163,620	[3]
Tier 1 capital ratio (leverage), Minimum Capital Requirement, Ratio		12.00%	[3],[4]	4.00%	12.00%	[3],[4]	12.00%	[3]
Tier 1 capital ratio (leverage), Minimum to be Well Capitalized, Amount		57,551	[3]		87,101	[3]	68,175	[3]
Tier 1 capital ratio (leverage), Minimum to be Well Capitalized, Ratio		5.00%	[3]		5.00%	[3]	5.00%	[3]
Tangible equity ratio, Amount		586,394	[5]		559,572	[5]	503,536	[5]
Tangible equity ratio		51.00%	[5]		32.10%	[5]	36.90%	[5]
Tangible equity ratio, Minimum Capital Requirement, Amount		$ 17,265	[5]		$ 26,130	[5]	$ 20,453	[5]
Tangible equity ratio, Minimum Capital Requirement, Ratio		1.50%	[5]		1.50%	[5]	1.50%	[5]
Minimum leverage capital per calendar quarter	12.00%

[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.

[4] Effective April 5, 2012, the minimum capital requirement was changed to 4% by the OCC, although HRB Bank plans to maintain a minimum of 12.0% leverage capital at the end of each calendar quarter.

[5] Tangible capital divided by tangible assets.