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Post Retirement Benefit Plans - Fair Value Measurements for Pension Assets (Detail) (USD $) In Millions, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	$ 621.2	$ 599.1
Equity Securities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	192.4	224.0
Fixed Income [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	267.7	188.3
Debt Securities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	19.3	56.8
Insurance Annuity [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	106.5	99.3
Other [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	35.3	30.7
Level 1 [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	304.3	111.8
Level 1 [Member] | Equity Securities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	146.3	7.7
Level 1 [Member] | Fixed Income [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	155.1	89.0
Level 1 [Member] | Other [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	12.9	15.1
Level 2 [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	210.4	388.0
Level 2 [Member] | Equity Securities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	46.1	216.3
Level 2 [Member] | Fixed Income [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	112.6	99.3
Level 2 [Member] | Debt Securities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	19.3	56.8
Level 2 [Member] | Other [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	32.4	15.6
Level 3 [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	106.5	99.3
Level 3 [Member] | Insurance Annuity [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of plan assets	$ 106.5	$ 99.3

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- Details

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X

- Definition

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Section 35

-Paragraph 50

-URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930

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