Employee Benefit Plans (Details) (USD $)	3 Months Ended		6 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012	Apr. 30, 2011
Qualified Pension [Member]
Defined Benefit Plan Net Periodic Benefit Cost [Abstract]
Service Cost	$ 2,475,000	$ 2,225,000	$ 4,950,000	$ 4,450,000
Interest Cost	2,650,000	2,700,000	5,300,000	5,400,000
Expected Return On Plan Assets	(5,125,000)	(5,150,000)	(10,250,000)	(10,300,000)
Amortization Of Transition Obligation	0	0	0	0
Amortization Of Prior Service (Credit) Cost	(550,000)	(550,000)	(1,100,000)	(1,100,000)
Amortization Of Actuarial Loss	1,375,000	775,000	2,750,000	1,550,000
Net Periodic Benefit Cost	825,000	0	1,650,000	0
Future Employee Benefit Plan Employer Contribution	0
Non Qualified Pension [Member]
Defined Benefit Plan Net Periodic Benefit Cost [Abstract]
Service Cost	10,000	11,000	20,000	23,000
Interest Cost	51,000	52,000	102,000	104,000
Expected Return On Plan Assets	0	0	0	0
Amortization Of Transition Obligation	0	0	0	0
Amortization Of Prior Service (Credit) Cost	20,000	5,000	40,000	10,000
Amortization Of Actuarial Loss	12,000	11,000	24,000	21,000
Net Periodic Benefit Cost	93,000	79,000	186,000	158,000
Future Employee Benefit Plan Employer Contribution	517,000
Other Benefits [Member]
Defined Benefit Plan Net Periodic Benefit Cost [Abstract]
Service Cost	347,000	350,000	693,000	699,000
Interest Cost	337,000	374,000	674,000	747,000
Expected Return On Plan Assets	(388,000)	(384,000)	(776,000)	(767,000)
Amortization Of Transition Obligation	167,000	167,000	334,000	334,000
Amortization Of Prior Service (Credit) Cost	0	0	0	0
Amortization Of Actuarial Loss	0	0	0	0
Net Periodic Benefit Cost	463,000	507,000	925,000	1,013,000
Future Employee Benefit Plan Employer Contribution	1,600,000
MPP Plan [Member]
Defined Contribution Plan Disclosure [Abstract]
Employee Benefit Plan Employer Contribution			500,000
DCR Plan [Member]
Defined Contribution Plan Disclosure [Abstract]
Defined Contribution Restoration and Voluntary Deferral Plan Recorded Liability	2,500,000
Employee Benefit Plan Employer Contribution			$ 400,000