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Pension and Other Post-retirement Benefits - Contributions And Benefits (Details)
$ in Thousands
Oct. 29, 2017
USD ($)
Pension Benefits  
Pension and Other Post-retirement Benefits  
Employers contribution in next fiscal year $ 15,500
Expected contribution representing benefit payments for unfunded plans during next fiscal year 27,100
Expected future benefit payments  
2018 60,374
2019 62,903
2020 65,920
2021 68,794
2022 71,836
2023 - 2027 414,167
Post-retirement Benefits  
Expected future benefit payments  
2018 21,003
2019 21,038
2020 20,813
2021 20,779
2022 20,664
2023 - 2027 97,888
Expected federal subsidy receipts related to prescription drug benefits per year through 2027 $ 600