|**Employee Benefit Plans (Tables)**                                            | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
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|**General Discussion of Pension and Other Postretirement Benefits [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Components Of Net Periodic Benefit Cost                                        | Components of the net periodic benefit cost for our defined benefit pension plans and our other postretirement employee benefits (OPEB) plan for thethreemonths endedJanuary 31, 2015and2014are presented below.Qualified PensionNonqualifiedPensionOther BenefitsIn thousands201520142015201420152014Service cost$3,050$2,750$—$—$295$277Interest cost2,9752,9505245369362Expected return on plan assets(5,925)(5,700)——(459)(457)Amortization of prior service (credit) cost(550)(550)5820——Amortization of actuarial loss2,0501,87521127—Total$1,600$1,325$131$77$212$182
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|                                                                               | Qualified Pension                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|In thousands                                                                   | 2015                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Service cost                                                                   | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Interest cost                                                                  | 2,975                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Expected return on plan assets                                                 | (5,925                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|Amortization of prior service (credit) cost                                    | (550                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Amortization of actuarial loss                                                 | 2,050                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Total                                                                          | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Anticipated Employer Contribution To Benefit Plans                             | We anticipate that we will contribute the following additional amounts to our plans in2015.In thousandsNonqualified pension plans$383OPEB plan1,500                                                                                                                                                                                                                                                                                                                                                                                                                         
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|In thousands                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Nonqualified pension plans                                                     | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|OPEB plan                                                                      | 1,500                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

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                    duration X- DefinitionTabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.+ ReferencesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920+ Details**Name:**
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