Equity and Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 1,047.5	$ 957.9
Other comprehensive income, net of tax	41.4	23.5
Ending balance	1,126.5	965.2
Foreign Currency Translation
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(249.3)	(270.2)
Other comprehensive income, net of tax	38.0	(7.5)
Ending balance	(211.3)	(277.7)
Interest Rate Derivative
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	5.1	0.0
Other comprehensive income, net of tax	4.5	4.6
Ending balance	9.6	4.6
Minimum Pension Liability Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(114.0)	(128.2)
Other comprehensive income, net of tax	(0.9)	28.1
Ending balance	(114.9)	(100.1)
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(358.2)	(398.4)
Other comprehensive income, net of tax	41.6	25.2
Ending balance	$ (316.6)	$ (373.2)