Union Contracts (Details)	Mar. 31, 2016 employees
Coshocton, OH Works [Member]
Concentration Risk [Line Items]
Entity Number of Employees	325
Butler Works [Member]
Concentration Risk [Line Items]
Entity Number of Employees	1,235
Dearborn Works [Member]
Concentration Risk [Line Items]
Entity Number of Employees	1,165
Mansfield OH Works [Member]
Concentration Risk [Line Items]
Entity Number of Employees	300

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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