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Segment and Related Information - Schedule of Total Operating Income for Reportable Segments (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting [Abstract]
Total operating income for reportable segments	$ 166.8	$ 134.2	$ 274.4
Interest income	0.9	0.4	5.4
Other	1.2	0.3	(2.0)
Income before income tax	168.9	134.9	277.8
Income tax provision	43.6	54.7	101.6
Net income	$ 125.3	$ 80.2	$ 176.2

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- Definition

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

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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