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Weighted Average Assumptions Used To Determine Benefit Obligations And Net Periodic Benefit Cost (Detail)
12 Months Ended
Oct. 31, 2013
Oct. 31, 2012
Oct. 31, 2011
Defined Benefit Plans
     
Assumptions to measure net periodic benefit cost      
Rate of compensation increase 3.50% [1],[2] 3.50% [1],[2] 3.50% [1],[2]
Rate of return on plan assets 6.00% [1],[3] 6.00% [1],[3] 8.00% [1],[3]
Assumptions used to determine benefit obligations      
Rate of compensation increase 3.50% [1],[2] 3.50% [1],[2] 3.50% [1],[2]
Defined Benefit Plans | Minimum
     
Assumptions to measure net periodic benefit cost      
Discount rate 2.84% [1] 4.12% [1] 4.50% [1]
Assumptions used to determine benefit obligations      
Discount rate 3.58% [2] 2.84% [2] 4.12% [2]
Defined Benefit Plans | Maximum
     
Assumptions to measure net periodic benefit cost      
Discount rate 3.50% [1] 4.51% [1] 4.98% [1]
Assumptions used to determine benefit obligations      
Discount rate 4.28% [2] 3.50% [2] 4.51% [2]
Postretirement Benefit Plans
     
Assumptions to measure net periodic benefit cost      
Rate of compensation increase 3.50% [1],[2] 3.50% [1],[2] 3.50% [1],[2]
Assumptions used to determine benefit obligations      
Rate of compensation increase 3.50% [1],[2] 3.50% [1],[2] 3.50% [1],[2]
Postretirement Benefit Plans | Minimum
     
Assumptions to measure net periodic benefit cost      
Discount rate 3.15% [1] 4.04% [1] 4.31% [1]
Assumptions used to determine benefit obligations      
Discount rate 4.13% [2] 3.15% [2] 4.04% [2]
Postretirement Benefit Plans | Maximum
     
Assumptions to measure net periodic benefit cost      
Discount rate 3.58% [1] 4.56% [1] 5.02% [1]
Assumptions used to determine benefit obligations      
Discount rate 4.43% [2] 3.58% [2] 4.56% [2]
[1] Determined as of beginning of year
[2] Determined as of end of year
[3] Relates to the OneSource Pension Plan