Rendering

Component: (Network and Table)
Network
2410408 - Disclosure - Postretirement Benefits - Future Expected Benefit Payments (Details)
(http://atkore.com/role/PostretirementBenefitsFutureExpectedBenefitPaymentsDetails)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001666138 (http://www.sec.gov/CIK)
Compensation and Retirement Disclosure [Abstract]Period [Axis]
2016-09-30
Compensation and Retirement Disclosure [Abstract]
 
2017
4,926,000  
2018
5,338,000  
2019
5,659,000  
2020
6,040,000  
2021
6,358,000  
2022-2026
35,361,000