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Derivative Instruments - Schedule of Notional Volumes of Derivative Instruments (Details) - lb lb in Thousands | Mar. 31, 2020 | Jun. 30, 2019
--- | --- | ---
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | 38,811 | 48,183
Cash Flow Hedging | Designated as Hedging Instrument |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | 33,900 | 42,113
Cash Flow Hedging | Not Designated as Hedging Instrument | Long |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | 4,911 | 6,070

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