BENEFIT PLANS - Amounts Recognized in Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Apr. 27, 2019	Oct. 22, 2018	Jul. 28, 2018
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Pension and other postretirement benefit obligations	$ 208,816		$ 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	5,084
Total	$ 7,814