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Post Retirement Benefit Plans - Additional Information (Detail) - USD ($)
 12 Months Ended
Oct. 31, 2015
Oct. 31, 2014
Oct. 31, 2013
Defined Benefit Plan Disclosure [Line Items]      
Company's pension contributions $ 8,200,000 $ 15,500,000  
Company's pension contributions 3,200,000    
Company's estimated pension contributions 15,700,000    
Increase in projected benefit obligation $ 20,000,000    
Expected return on plan assets 5.50%    
Transfer value $ 0    
Aggregated accumulated benefit obligation 739,900,000 752,500,000  
Fair value of plan assets $ 624,700,000 $ 650,800,000 $ 621,200,000
Class A Common Stock [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Authorized Shares 128,000,000 128,000,000  
Class B Common Stock [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Authorized Shares 69,120,000 69,120,000  
Pension Plans, Defined Benefit [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Company's pension contributions $ 11,400,000 $ 16,900,000 15,800,000
Amortization loss of prior service costs $ 11,600,000    
Pension Plans, Defined Benefit [Member] | Class A Common Stock [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Authorized Shares 247,504 247,504  
Pension Plans, Defined Benefit [Member] | Class B Common Stock [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Authorized Shares 160,710 160,710  
Postretirement Health Care and Life Insurance Benefits [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Aggregated accumulated benefit obligation $ 14,900,000 $ 17,300,000  
Fair value of plan assets 0 0  
401 (k) Savings Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Company's pension contributions $ 7,800,000 $ 7,300,000 $ 6,500,000