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Debt - Schedule of Debt (Detail) - USD ($) $ in Millions	Apr. 02, 2022	Jul. 26, 2021	Jul. 03, 2021	May 17, 2016
Debt Instrument [Line Items]
Less: Original issue discount and deferred financing costs	$ (35.9)		$ (30.8)
Long-term debt	3,721.1		2,240.5
Total debt, excluding current installments	3,721.1		2,240.5
ABL Facility [Member]
Debt Instrument [Line Items]
Long-term debt, gross	1,422.0		586.3
5.500% Notes due 2024 [Member]
Debt Instrument [Line Items]
Long-term debt, gross			350.0
Less: Original issue discount and deferred financing costs				$ (0.5)
6.875% Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	275.0		275.0
5.500% Senior Notes due 2027 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	1,060.0		$ 1,060.0
4.250% Senior Notes due 2029 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,000.0
Less: Original issue discount and deferred financing costs		$ (0.5)