Debt - Schedule of Debt (Detail) - USD ($) $ in Millions	Mar. 30, 2019	Jun. 30, 2018
Debt Instrument [Line Items]
Less: Original issue discount and deferred financing costs	$ (6.3)	$ (7.1)
Long-term debt	1,042.1	1,123.0
Capital and finance lease obligations	142.8	61.2
Total debt	1,184.9	1,184.2
Less: current installments	(16.9)	(8.4)
Total debt, excluding current installments	1,168.0	1,175.8
ABL Facility [Member]
Debt Instrument [Line Items]
Long-term debt, gross	698.4	780.1
5.500% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 350.0	$ 350.0

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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