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Component: (Network and Table)
Network
168 - Disclosure - Pensions and Retirement Savings Plan - Components of Net Periodic Pension Costs (Detail)
(http://www.aepinc.com/taxonomy/role/DisclosurePensionsAndRetirementSavingsPlanComponentsOfNetPeriodicPensionCosts)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000785787 (http://www.sec.gov/CIK)
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]Period [Axis]
2015-11-01 - 2016-10-31
2014-11-01 - 2015-10-31
2013-11-01 - 2014-10-31
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
 
 
 
Service cost
162,000  
170,000  
276,000  
Interest cost
332,000  
343,000  
388,000  
Expected return on assets
(380,000) 
(430,000) 
(440,000) 
Curtailment, settlement loss
  
53,000  
Amortization of net actuarial loss
38,000  
46,000  
56,000  
Amortization of prior service cost
99,000  
106,000  
119,000  
Net periodic pension cost
251,000  
 
235,000  
 
452,000