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CONTINGENCIES - Additional Information (Detail)
$ in Millions
 3 Months Ended 12 Months Ended
Apr. 01, 2017
USD ($)
Dec. 28, 2019
USD ($)
sites
Dec. 29, 2018
USD ($)
Jun. 30, 2018
USD ($)
Commitments and Contingencies Disclosure [Line Items]        
Superfund Sites | sites   28    
Reserve for environmental remediation costs   $ 57.8 $ 58.1  
Reserve for environmental loss contingencies, EPA funded amount   $ 15.6    
Environmental remediation. Period construction of treatment facility to be maintained   30 years    
Undiscounted environmental liability expected to be paid 2013   $ 1.4    
Accrual for Environmental Loss Contingencies, Undiscounted, Second Year   3.0    
Undiscounted environmental liability expected to be paid in 2015   3.0    
Undiscounted environmental liability expected to be paid in 2016   3.0    
Undiscounted environmental liability expected to be paid in 2017   3.1    
Undiscounted environmental liability expected to be paid thereafter   33.6    
Leased Sites        
Commitments and Contingencies Disclosure [Line Items]        
Discounted environmental liability   40.8    
Undiscounted environmental liability   47.1    
Property, Plant and Equipment, Other Types        
Commitments and Contingencies Disclosure [Line Items]        
Environmental Remediation Expense $ 26.3      
Reserve for environmental remediation costs   213.8 $ 246.6  
Reserve for environmental remediation costs, current   57.8    
Reserve for environmental remediation costs, noncurrent   156.0    
Reserve for environmental loss contingencies, obligation after EPA funding   198.2    
Centredale Site [Member]        
Commitments and Contingencies Disclosure [Line Items]        
Reserve for environmental remediation costs       $ 77.7
Environmental Exit Costs, Anticipated Cost   $ 113.8    
Minimum        
Commitments and Contingencies Disclosure [Line Items]        
Environmental liability discount rate   1.60%    
Minimum | Property, Plant and Equipment, Other Types        
Commitments and Contingencies Disclosure [Line Items]        
Environmental Exit Costs, Anticipated Cost   $ 149.1    
Maximum [Member]        
Commitments and Contingencies Disclosure [Line Items]        
Environmental liability discount rate   2.30%    
Maximum [Member] | Property, Plant and Equipment, Other Types        
Commitments and Contingencies Disclosure [Line Items]        
Environmental Exit Costs, Anticipated Cost   $ 286.1    
Cargo and Freight [Member]        
Commitments and Contingencies Disclosure [Line Items]        
Loss Contingency Accrual   $ 50.8