Income Taxes - Tax Reform (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
Jul. 28, 2019	Jul. 29, 2018	Jul. 28, 2019	Jul. 29, 2018	Oct. 28, 2018
U.S. Tax Reform
Federal corporate statutory tax rate (as a percent)			21.00%		23.30%
Net deferred tax liability remeasurement		$ (3.6)	$ 4.8	$ (326.0)	$ (362.9)
Deemed earnings repatriation tax	$ (13.9)		(13.9)	15.7	$ 20.6
Total discrete tax (benefit) expense	$ (13.9)	$ (3.6)	$ (9.1)	$ (310.3)

Amount of income tax benefit for remeasurement of net deferred tax liabilities from change in tax rate pursuant to Tax Cuts and Jobs Act.

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Amount of income tax expense (benefit) from effect of Tax Cuts and Jobs Act.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of income tax expense from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act.

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