Derivatives and Hedging Activities - Summary of Fair Value of Derivative Financial Instruments (Detail) - USD ($) $ in Millions	Sep. 26, 2015	Jun. 27, 2015
Derivatives, Fair Value [Line Items]
Asset Derivatives Fair Value		$ 0.2
Liability Derivatives Fair Value	$ 12.0	9.1
Derivatives Designated as Hedging Instruments Under ASC 815-20 [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives Fair Value		0.2
Liability Derivatives Fair Value	9.1	7.4
Derivatives Not Designated as Hedging Instruments Under ASC 815-20 [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives Fair Value	2.9	1.7
Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives Fair Value		0.2
Liability Derivatives Fair Value	9.1	7.4
Diesel Fuel Collars [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives Fair Value	2.9	1.7
Current Derivative Liabilities [Member] | Interest Rate Swaps [Member] | Derivatives Designated as Hedging Instruments Under ASC 815-20 [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives Fair Value	6.2	6.1
Current Derivative Liabilities [Member] | Diesel Fuel Collars [Member] | Derivatives Not Designated as Hedging Instruments Under ASC 815-20 [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives Fair Value	2.8	1.7
Long-Term Derivative Liabilities [Member] | Interest Rate Swaps [Member] | Derivatives Designated as Hedging Instruments Under ASC 815-20 [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives Fair Value	2.9	1.3
Long-Term Derivative Liabilities [Member] | Diesel Fuel Collars [Member] | Derivatives Not Designated as Hedging Instruments Under ASC 815-20 [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives Fair Value	$ 0.1
Other Assets [Member] | Interest Rate Swaps [Member] | Derivatives Designated as Hedging Instruments Under ASC 815-20 [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives Fair Value		$ 0.2