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BENEFIT PLANS - Estimated Future Benefit Payments (Details)
$ in Thousands
Apr. 27, 2019
USD ($)
Pension Benefits  
Defined Benefit Plan Disclosure [Line Items]  
2019 $ 41,128
2020 158,500
2021 163,100
2022 169,900
2023 174,600
Years 2024-2027 849,500
Other Postretirement Benefits  
Defined Benefit Plan Disclosure [Line Items]  
2019 1,321
2020 4,800
2021 4,700
2022 4,600
2023 4,500
Years 2024-2027 $ 19,400