Goodwill And Intangible Assets (Schedule Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Apr. 30, 2015	Apr. 30, 2014
Goodwill [Roll Forward]
Goodwill before impairment losses, beginning balance	$ 468,414us-gaap_GoodwillGross	$ 467,079us-gaap_GoodwillGross
Accumulated impairment losses, beginning balance	(32,297)	(32,297)
Goodwill, beginning balance	436,117us-gaap_Goodwill	434,782us-gaap_Goodwill
Acquisitions	7,628us-gaap_GoodwillAcquiredDuringPeriod	3,086us-gaap_GoodwillAcquiredDuringPeriod
Disposals and foreign currency changes, net	(1,914)hrb_GoodwillDisposalsAndOther	(1,751)hrb_GoodwillDisposalsAndOther
Impairments	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss
Goodwill before impairment losses, ending balance	474,128us-gaap_GoodwillGross	468,414us-gaap_GoodwillGross
Accumulated impairment losses, ending balance	(32,297)	(32,297)
Goodwill, ending balance	$ 441,831us-gaap_Goodwill	$ 436,117us-gaap_Goodwill

Goodwill disposals and other

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 20

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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-Publisher FASB

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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Publisher FASB

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Publisher FASB

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