Commitments and Contingencies (Details) $ in Thousands, $ in Millions	3 Months Ended		9 Months Ended			41 Months Ended
	Aug. 01, 2020 USD ($)	Aug. 03, 2019 USD ($)	Aug. 01, 2020 USD ($) government_entity	Aug. 01, 2020 CAD ($) government_entity	Aug. 03, 2019 USD ($)	Aug. 01, 2020 USD ($)	Aug. 01, 2020 CAD ($)	Aug. 01, 2020 CAD ($)
Loss Contingencies [Line Items]
Maximum amount of Canadian grant	$ 42,900		$ 42,900			$ 42,900		$ 57.6
Number of Canadian government entities | government_entity			3	3
Total revenue | $	976,712	$ 960,606	$ 2,703,677		$ 2,604,144
Amounts receivable from grant	$ 5,200		5,200			5,200		$ 7.0
Grants
Loss Contingencies [Line Items]
Total revenue			$ 6,000	$ 8.1		$ 27,600	$ 37.0