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BENEFIT PLANS - Amounts Recognized in Consolidated Balance Sheets (Details) - USD ($)
$ in Thousands
Jan. 26, 2019
Oct. 22, 2018
Jul. 28, 2018
Pension Plans, Postretirement and Other Employee Benefits [Line Items]      
Pension and other postretirement benefit obligations $ 222,231   $ 0
Pension Benefits      
Pension Plans, Postretirement and Other Employee Benefits [Line Items]      
Accrued compensation and benefits   $ 1,300  
Pension and other postretirement benefit obligations   193,634  
Total   194,934  
Other Postretirement Benefits      
Pension Plans, Postretirement and Other Employee Benefits [Line Items]      
Accrued compensation and benefits   0  
Pension and other postretirement benefit obligations   40,690  
Total   $ 40,690  
Post-Employment Benefits      
Pension Plans, Postretirement and Other Employee Benefits [Line Items]      
Accrued compensation and benefits 2,730    
Pension and other postretirement benefit obligations 5,135    
Total $ 7,865