Employee Benefit Plans (Details) (USD $)	3 Months Ended	6 Months Ended	1 Months Ended	6 Months Ended	1 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Apr. 30, 2014	Apr. 30, 2014	Jan. 31, 2014 MPP Plan [Member]	Apr. 30, 2014 DCR Plan [Member]	Nov. 30, 2013 Qualified Pension [Member]	Apr. 30, 2014 Qualified Pension [Member]	Apr. 30, 2013 Qualified Pension [Member]	Apr. 30, 2014 Qualified Pension [Member]	Apr. 30, 2013 Qualified Pension [Member]	Apr. 30, 2014 Non Qualified Pension [Member]	Apr. 30, 2013 Non Qualified Pension [Member]	Apr. 30, 2014 Non Qualified Pension [Member]	Apr. 30, 2013 Non Qualified Pension [Member]	Apr. 30, 2014 Other Benefits [Member]	Apr. 30, 2013 Other Benefits [Member]	Apr. 30, 2014 Other Benefits [Member]	Apr. 30, 2013 Other Benefits [Member]
Defined Benefit Plan Net Periodic Benefit Cost [Abstract]
Service Cost						$ 2,750,000	$ 3,150,000	$ 5,500,000	$ 6,300,000	$ 0	$ 0	$ 0	$ 0	$ 277,000	$ 332,000	$ 554,000	$ 663,000
Interest Cost						2,950,000	2,475,000	5,900,000	4,950,000	45,000	40,000	90,000	79,000	362,000	282,000	724,000	565,000
Expected Return On Plan Assets						(5,700,000)	(5,300,000)	(11,400,000)	(10,600,000)	0	0	0	0	(457,000)	(416,000)	(915,000)	(832,000)
Amortization Of Transition Obligation						0	0	0	0	0	0	0	0	0	167,000	0	334,000
Amortization Of Prior Service (Credit) Cost						(550,000)	(550,000)	(1,100,000)	(1,100,000)	20,000	20,000	41,000	40,000	0	0	0	0
Amortization Of Actuarial Loss						1,875,000	2,750,000	3,750,000	5,500,000	12,000	40,000	23,000	80,000	0	0	0	0
Net Periodic Benefit Cost						1,325,000	2,525,000	2,650,000	5,050,000	77,000	100,000	154,000	199,000	182,000	365,000	363,000	730,000
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year										232,000				1,500,000
Defined Benefit Plan, Contributions by Employer					20,000,000							200,000
Defined Contribution Plans Disclosure [Abstract]
Defined Contribution Restoration and Voluntary Deferral Plan Recorded Liability	4,000,000
Employee Benefit Plan Employer Contribution			900,000	500,000
VDP Employer Contribution		$ 0