Stockholders' Equity (Schedule of Changes in Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Minimum Pension Liability [Roll Forward]
Minimum Pension Liability, Tax effect for the period	$ (3.1)	$ (4.2)	$ 5.3
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Total, Beginning Balance	(375.3)
Total, Ending Balance	(430.7)	(375.3)
ASU 2018-02 adoption	0.0	17.7
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Total, Beginning Balance	(375.3)	(489.6)	(191.6)
Gross change in value for the period	(47.5)	118.5	(303.3)
Tax effect for the period	(3.1)	(4.2)	5.3
Total, Ending Balance	(430.7)	(375.3)	(489.6)
ASU 2018-02 adoption	(4.8)
Foreign Currency Translation Adjustment
Foreign Currency Translation Adjustment [Roll Forward]
Foreign Currency Translation Adjustment, Beginning Balance	(353.7)	(461.4)	(171.8)
Foreign Currency Translation Adjustment, Gross change in value for the period	(58.5)	107.7	(289.6)
Foreign Currency Translation Adjustment, Tax effect for the period	0.0	0.0	0.0
Foreign Currency Translation Adjustment, Ending Balance	(412.2)	(353.7)	(461.4)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
ASU 2018-02 adoption	0.0
Minimum Pension Liability
Minimum Pension Liability [Roll Forward]
Minimum Pension Liability, Beginning Balance	(21.6)	(28.2)	(19.8)
Minimum Pension Liability, Gross change in value for the period	11.0	10.8	(13.7)
Minimum Pension Liability, Tax effect for the period	(3.1)	(4.2)	5.3
Minimum Pension Liability, Ending Balance	(18.5)	$ (21.6)	$ (28.2)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
ASU 2018-02 adoption	$ (4.8)