Sale of Non-United States Accounts Receivable - Company's Accounts Receivables Programs (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015	Oct. 31, 2015
European RPA
Finance Receivable Transferred To Held For Sale [Line Items]
Gross accounts receivable sold to third party financial institution	$ 160.0	$ 165.9	$ 463.3	$ 552.6
Cash received for accounts receivable sold under the programs	140.7	147.1	409.2	489.5
Deferred purchase price related to accounts receivable sold	19.3	18.8	53.7	63.1
Loss associated with the programs	0.2	0.3	0.7	1.2
Expenses associated with the programs	0.0	0.0	0.0	0.0
Accounts receivable sold to and held by third party financial institution	116.8		116.8		$ 114.8
Uncollected deferred purchase price related to accounts receivable sold	25.9		25.9		0.0
Deferred purchase price liability related to accounts receivable sold	0.0		0.0		(1.5)
Singapore RPA
Finance Receivable Transferred To Held For Sale [Line Items]
Gross accounts receivable sold to third party financial institution	11.4	12.0	32.5	36.4
Cash received for accounts receivable sold under the programs	11.4	12.0	32.5	36.4
Deferred purchase price related to accounts receivable sold	0.0	0.0	0.0	0.0
Loss associated with the programs	0.0	0.0	0.0	0.0
Expenses associated with the programs	0.0	0.0	0.0	0.1
Accounts receivable sold to and held by third party financial institution	3.5		3.5		4.0
Uncollected deferred purchase price related to accounts receivable sold	0.0		0.0		0.0
Total RPAs
Finance Receivable Transferred To Held For Sale [Line Items]
Gross accounts receivable sold to third party financial institution	171.4	177.9	495.8	589.0
Cash received for accounts receivable sold under the programs	152.1	159.1	441.7	525.9
Deferred purchase price related to accounts receivable sold	19.3	18.8	53.7	63.1
Loss associated with the programs	0.2	0.3	0.7	1.2
Expenses associated with the programs	0.0	$ 0.0	0.0	$ 0.1
Accounts receivable sold to and held by third party financial institution	120.3		120.3		118.8
Uncollected deferred purchase price related to accounts receivable sold	25.9		25.9		0.0
Deferred purchase price liability related to accounts receivable sold	$ 0.0		$ 0.0		$ (1.5)