Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits, Including Income Tax Penalties and Interest Accrued	$ 4.7		$ 4.7		$ 5.2
Unrecognized tax benefits that impact the effective income tax rate	3.6		3.6		$ 3.8
Income tax expense(benefit)	8.8	$ 10.9	14.9	$ 14.2
Earnings from continuing operations, before income taxes	$ 29.7	$ 42.6	$ 81.4	$ 80.5

Unrecognized Tax Benefits, Including Income Tax Penalties and Interest Accrued

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- Definition

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

+ References

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-Topic 235
-SubTopic 10
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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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-Publisher FASB
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-Publisher FASB
-Name Accounting Standards Codification
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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

+ References

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