XML 23 R37.htm IDEA: XBRL DOCUMENT v3.2.0.727
Regulatory Matters - Assets and Liabilities (Details) - USD ($)
$ in Thousands
Jul. 31, 2015
Oct. 31, 2014
Regulatory Liabilities [Line Items]    
Regulatory liabilities - current $ 34,815 $ 46,231
Regulatory liabilities - noncurrent 587,648 558,598
Regulatory liabilities, Total 622,463 604,829
Regulatory Assets [Line Items]    
Regulatory assets - current 12,434 29,088
Regulatory assets - noncurrent 179,187 184,779
Regulatory assets, Total 191,621 213,867
Amounts due to customers    
Regulatory Liabilities [Line Items]    
Regulatory liabilities - current 34,815 46,231
Regulatory cost of removal    
Regulatory Liabilities [Line Items]    
Regulatory liabilities - noncurrent 519,028 506,574
Deferred income taxes    
Regulatory Liabilities [Line Items]    
Regulatory liabilities - noncurrent 68,533 51,930
Amounts not yet recognized as a component of pension and other retirement benefit costs    
Regulatory Liabilities [Line Items]    
Regulatory liabilities - noncurrent 87 94
Unamortized debt expense    
Regulatory Assets [Line Items]    
Regulatory assets - current 1,480 1,490
Regulatory assets - noncurrent 14,296 15,402
Amounts due from customers    
Regulatory Assets [Line Items]    
Regulatory assets - current 0 16,108
Environmental costs    
Regulatory Assets [Line Items]    
Regulatory assets - current 1,527 1,568
Regulatory assets - noncurrent 5,439 6,470
Deferred operations and maintenance expenses    
Regulatory Assets [Line Items]    
Regulatory assets - current 833 916
Regulatory assets - noncurrent 4,214 4,721
Deferred pipeline integrity expenses    
Regulatory Assets [Line Items]    
Regulatory assets - current 3,470 3,470
Regulatory assets - noncurrent 27,219 24,694
Deferred pension and other retirement benefit costs    
Regulatory Assets [Line Items]    
Regulatory assets - current 2,757 2,769
Regulatory assets - noncurrent 18,550 18,799
Amounts not yet recognized as a component of pension and other retirement benefit costs    
Regulatory Assets [Line Items]    
Regulatory assets - noncurrent 89,140 94,265
Regulatory cost of removal    
Regulatory Assets [Line Items]    
Regulatory assets - noncurrent 18,792 18,275
Robeson liquefied natural gas (LNG) development costs    
Regulatory Assets [Line Items]    
Regulatory assets - current 515 917
Regulatory assets - noncurrent 223 509
Other    
Regulatory Assets [Line Items]    
Regulatory assets - current 1,852 1,850
Regulatory assets - noncurrent $ 1,314 $ 1,644