Stockholders' Equity - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) Income (Details) - USD ($) $ in Millions	12 Months Ended
Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 3,307.8	$ 3,175.8	$ 2,695.9
Gross change in value for the period	(24.4)	(47.5)	118.5
Tax effect for the period	8.0	(3.1)	(4.2)
ASU 2018-02 adoption		(4.8)
Ending balance	3,628.6	3,307.8	3,175.8
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(430.7)	(375.3)	(489.6)
Ending balance	(447.1)	(430.7)	(375.3)
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(412.2)	(353.7)	(461.4)
Gross change in value for the period	9.0	(58.5)	107.7
Tax effect for the period	0.0	0.0	0.0
ASU 2018-02 adoption		0.0
Ending balance	(403.2)	(412.2)	(353.7)
Minimum Pension Liability
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(18.5)	(21.6)	(28.2)
Gross change in value for the period	(33.4)	11.0	10.8
Tax effect for the period	8.0	(3.1)	(4.2)
ASU 2018-02 adoption		(4.8)
Ending balance	$ (43.9)	$ (18.5)	$ (21.6)

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount before tax and reclassification adjustments of other comprehensive income (loss).

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Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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Amount of increase (decrease) in accumulated other comprehensive income (AOCI) for reclassification to retained earnings of tax effect from remeasurement of deferred tax pursuant to Tax Cuts and Jobs Act.

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