Special Charges (Textual) (Details) $ in Thousands	3 Months Ended					6 Months Ended		12 Months Ended
	May 05, 2018 USD ($) employee	Feb. 03, 2018 USD ($) employee	Apr. 29, 2017 USD ($)	Jan. 28, 2017 USD ($) employee	Apr. 30, 2016 USD ($) employee	May 05, 2018 USD ($) employee	Apr. 29, 2017 USD ($)	Oct. 28, 2017 USD ($)	Oct. 29, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Special charges	$ 1,089		$ 0			$ 58,407	$ 49,463
Early Retirement Action
Restructuring Cost and Reserve [Line Items]
Special charges	0	$ 0
Workforce Reductions Plan 2018
Restructuring Cost and Reserve [Line Items]
Special charges						58,407
Workforce Reductions Plan 2018 | Facility Closing
Restructuring Cost and Reserve [Line Items]
Special charges	1,089	41,201				$ 42,290
Number of manufacturing, engineering and selling, marketing, general and administrative employees related to operating costs action | employee						1,249
Workforce Reductions Plan 2018 | Reduction of Operating Costs Action
Restructuring Cost and Reserve [Line Items]
Special charges	$ 0	$ 16,117
Number of employees still employed who are planned to be separated | employee	11
Workforce Reductions Plan 2018 | Early Retirement Action
Restructuring Cost and Reserve [Line Items]
Special charges						$ 0
Workforce Reductions Plan 2016
Restructuring Cost and Reserve [Line Items]
Special charges									$ 13,684
Workforce Reductions Plan 2016 | Facility Closing
Restructuring Cost and Reserve [Line Items]
Special charges									0
Workforce Reductions Plan 2016 | Reduction of Operating Costs Action
Restructuring Cost and Reserve [Line Items]
Special charges					$ 13,700				13,684
Number of manufacturing, engineering and selling, marketing, general and administrative employees related to operating costs action | employee					123
Number of employees still employed who are planned to be separated | employee						5
Workforce Reductions Plan 2016 | Early Retirement Action
Restructuring Cost and Reserve [Line Items]
Special charges									$ 0
Workforce Reductions Plan 2017
Restructuring Cost and Reserve [Line Items]
Special charges								$ 49,463
Workforce Reductions Plan 2017 | Facility Closing
Restructuring Cost and Reserve [Line Items]
Special charges								0
Workforce Reductions Plan 2017 | Reduction of Operating Costs Action
Restructuring Cost and Reserve [Line Items]
Special charges				$ 8,100				8,126
Number of manufacturing, engineering and selling, marketing, general and administrative employees related to operating costs action | employee		126		177
Number of employees still employed who are planned to be separated | employee						3
Workforce Reductions Plan 2017 | Early Retirement Action
Restructuring Cost and Reserve [Line Items]
Special charges				$ 41,300				$ 41,337
Number of manufacturing, engineering and selling, marketing, general and administrative employees related to operating costs action | employee				225
Number of employees still employed who are planned to be separated | employee						2