Derivative Instruments and Hedging Activities Outstanding Commodity Hedge Contracts (Details) - T |
12 Months Ended | |
---|---|---|
Sep. 30, 2019 |
Sep. 30, 2018 |
|
Derivative [Line Items] | ||
Document Period End Date | Sep. 30, 2019 | |
Copper [Member] | ||
Derivative [Line Items] | ||
Derivative, Nonmonetary Notional Amount, Mass | 3,561 | 3,175 |
Lead [Member] | ||
Derivative [Line Items] | ||
Derivative, Nonmonetary Notional Amount, Mass | 0 | 49,066 |
Polypropylene [Member] | ||
Derivative [Line Items] | ||
Derivative, Nonmonetary Notional Amount, Mass | 0 | 15,868 |
Aluminum [Member] | ||
Derivative [Line Items] | ||
Derivative, Nonmonetary Notional Amount, Mass | 2,967 | 3,381 |
Tin [Member] | ||
Derivative [Line Items] | ||
Derivative, Nonmonetary Notional Amount, Mass | 0 | 3,076 |