Debt - Schedule of Debt (Detail) - USD ($) $ in Millions	Sep. 28, 2019	Jun. 29, 2019
Debt Instrument [Line Items]
Less: Original issue discount and deferred financing costs	$ (7.9)	$ (6.1)
Long-term debt	2,212.1	1,202.9
Total debt, excluding current installments	2,212.1	1,202.9
ABL Facility [Member]
Debt Instrument [Line Items]
Long-term debt, gross	810.0	859.0
5.500% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	350.0	$ 350.0
5.500% Senior Notes due 2027 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,060.0

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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