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Post Retirement Benefit Plans - Reconciliation of the Beginning and Ending Balances of the Fair Value Measurements Using Significant Unobservable Inputs (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Actual return on plan assets held at reporting date:    
Balance at end of year $ 599.1 $ 540.3
Level 3 [Member]
    
Actual return on plan assets held at reporting date:    
Balance at end of year 99.3 87.9
Level 3 [Member] | Non-U.S. Pension Plan [Member]
    
Pension Plans, Postretirement and Other Employee Benefits [Line Items]    
Balance at beginning of year 87.9 97.7
Actual return on plan assets held at reporting date:    
Assets still held at reporting date 21.9 (2.6)
Plan participant contributions 0.2 0.2
Settlements (6.0) (6.2)
Currency impact (4.7) (1.2)
Balance at end of year $ 99.3 $ 87.9