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Expected Benefit to be Paid to Participants (Detail) (Pension & Postretirement Benefit Related, USD $)
In Thousands, unless otherwise specified
Oct. 31, 2012
Pension & Postretirement Benefit Related
 
Defined Benefit Plan Disclosure [Line Items]  
2013 $ 1,773
2014 1,823
2015 2,051
2016 2,214
2017 2,331
2018 - 2022 $ 13,785