Post Retirement Benefit Plans - Additional Information (Detail) (USD $)	12 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Company's pension contributions	$ 15,500,000	$ 14,400,000
Company's pension contributions	1,400,000
Company's estimated pension contributions	17,500,000
Increase in actuarial loss	92,800,000	(23,800,000)
Expected return on plan assets	5.70%
Transfer value	0
Aggregated accumulated benefit obligation	752,500,000	674,400,000
Fair value of plan assets	650,800,000	621,200,000	599,100,000
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	16,900,000	15,800,000	19,800,000
Amortization loss of prior service costs	14,500,000
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	17,300,000	0
Fair value of plan assets	18,500,000	0
401 (k) Savings Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Company's pension contributions	$ 7,300,000	$ 6,500,000	$ 3,900,000