Income Taxes - Income Before Income Taxes and the Income Tax Provision Related to Income (Details) - USD ($) $ in Millions	12 Months Ended
Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Income before income taxes:
United States	$ (88.0)	$ (32.8)	$ (122.8)
Foreign	354.5	510.2	454.7
Income before income taxes	266.5	477.4	331.9
Income tax provision	$ 28.1	$ 10.7	$ 192.0

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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