Employee Benefit Plans (Details) - USD ($)	1 Months Ended		3 Months Ended
	Jan. 31, 2016	Nov. 30, 2015	Jan. 31, 2016	Jan. 31, 2015
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Deferred Compensation Liability	$ 5,000,000		$ 5,000,000
Defined Contribution Restoration Plan
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Employer Contribution to Plan - deferred compensation			500,000
Voluntary Deferral Plan
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Employer Contribution to Plan - deferred compensation			0
Pension Plan | MPP Plan
Defined Contribution Plan Disclosure [Line Items]
Employer Contribution to Plan - defined contribution	$ 1,800,000
Qualified Pension Plan
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost			2,750,000	$ 3,050,000
Interest cost			2,400,000	2,975,000
Expected return on plan assets			(6,000,000)	(5,925,000)
Amortization of prior service (credit) cost			(550,000)	(550,000)
Amortization of actuarial loss			2,100,000	2,050,000
Total			700,000	1,600,000
Employer contribution amount - defined benefit		$ 10,000,000
Non Qualified Pension
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost			0	0
Interest cost			40,000	52,000
Expected return on plan assets			0	0
Amortization of prior service (credit) cost			52,000	58,000
Amortization of actuarial loss			20,000	21,000
Total			112,000	131,000
Additional contribution amounts			389,000
Employer contribution amount - defined benefit			100,000
Other Postretirement Benefit Plan
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost			294,000	295,000
Interest cost			321,000	369,000
Expected return on plan assets			(442,000)	(459,000)
Amortization of prior service (credit) cost			(83,000)	0
Amortization of actuarial loss			115,000	7,000
Total			205,000	$ 212,000
Additional contribution amounts			$ 1,300,000