Quarterly Financial Data (Unaudited) - Quarterly Results of Operations (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Restructuring charges	$ 5.6us-gaap_RestructuringCharges	$ 2.2us-gaap_RestructuringCharges	$ 16.1us-gaap_RestructuringCharges	$ 4.8us-gaap_RestructuringCharges	$ 23.1us-gaap_RestructuringCharges
Gain on sale of timberland		17.3us-gaap_GainLossOnSaleOfTimberProperty	17.1us-gaap_GainLossOnSaleOfTimberProperty	17.3us-gaap_GainLossOnSaleOfTimberProperty	0us-gaap_GainLossOnSaleOfTimberProperty
Asset impairment charges	70.2us-gaap_AssetImpairmentCharges	26.9us-gaap_AssetImpairmentCharges	85.8us-gaap_AssetImpairmentCharges	31.4us-gaap_AssetImpairmentCharges	13.2us-gaap_AssetImpairmentCharges
Gain on disposal of properties, plants and equipment, net	2.8		8.3	5.6	7.6
Gain on disposal of businesses, net	$ 21.2us-gaap_GainLossOnDispositionOfAssets1		$ 11.5us-gaap_GainLossOnDispositionOfAssets1

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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- Definition

Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2443-110228

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- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

+ References

+ Details

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- Definition

Amount of gain (loss) on sale or disposal of property used for growing and harvesting trees.

+ References

+ Details

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 5.P.3)

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

+ Details

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