Derivative Instruments - Schedule of Notional Volumes of Derivative Instruments (Details) - lb lb in Thousands	Dec. 31, 2020	Jun. 30, 2020
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	25,103	44,761
Cash Flow Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	17,100	36,413
Cash Flow Hedging | Not Designated as Hedging Instrument | Long
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	8,003	8,348