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Hedging Transactions and Derivative Financial Instruments (Additional Information) (Details) | Mar. 31, 2019 Contract | Mar. 31, 2017 USD ($)
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Bank Term Loan |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Number of derivative contracts related to minimizing risk associated with potential rise in copper prices (contract) | Contract | 23 |
Third Amended Credit Agreement | Revolving Credit Facility |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Maximum borrowing capacity |  | $ 450,000,000
Interest rate swap | Third Amended Credit Agreement | Revolving Credit Facility |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Hedged balance on debt instrument |  | $ 75,000,000

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