Derivatives and Hedging Activities - Narrative (Details) lb in Millions	3 Months Ended			9 Months Ended
	Mar. 31, 2022 USD ($) lb	Mar. 31, 2021 USD ($)	Sep. 30, 2020 USD ($)	Mar. 31, 2022 USD ($) lb	Mar. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)
Fair value of derivatives
Total asset derivatives	$ 55,300,000			$ 55,300,000
Total liability derivatives	100,000			100,000
Cash collateral held by counterparties	$ 0			0		$ 0
Net derivative gains included in AOCI expected to be reclassified into earnings				$ 34,200,000
Commodity contracts | Cash flow hedges
Fair value of derivatives
Amounts of raw materials to be purchased from forward contracts (in pounds) | lb	6.9			6.9
Interest Rate Swaps | Cash flow hedges | Interest expense, net
Fair value of derivatives
Interest rate swaps net gains (losses)	$ 100,000	$ 100,000		$ 200,000	$ 300,000
Interest Rate Swaps | Fair value hedging
Fair value of derivatives
Total notional amounts of interest rate contracts	0			0		$ 0
Interest Rate Swaps | Fair value hedging | Interest expense, net
Fair value of derivatives
Interest rate swaps net gains (losses)	$ 0	$ 0		$ 0	$ 400,000
Interest Rate Swaps | Fair value hedging | Gain (loss) on extinguishment of debt
Fair value of derivatives
Interest rate swaps net gains (losses)			$ 2,300,000