Equity and Comprehensive Income - Summary of Changes in Equity (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
Jan. 31, 2015	Jan. 31, 2014
Income tax benefit, Reclassification of cash flow hedges to earnings	$ 0	$ 0
Income tax benefit, minimum pension liability adjustment	2.1	(0.1)
Parent Company [Member]
Income tax benefit, Reclassification of cash flow hedges to earnings	0	0.1
Income tax benefit, minimum pension liability adjustment	$ 2.1	$ (0.1)

Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e640-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph c

-URI http://asc.fasb.org/extlink&oid=35706170&loc=d3e41638-113959

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