Issuance of Equity Units (Details) - USD ($)			3 Months Ended	9 Months Ended
	Jun. 01, 2024	May 25, 2021	Jun. 30, 2021	Jun. 30, 2021	May 31, 2021	May 17, 2021	Sep. 30, 2020	Jun. 30, 2020
Class of Stock [Line Items]
Recorded value			$ 213,000,000	$ 213,000,000			$ 0	$ 0
Shares issued on conversion settlement (in shares)		1			1
Sale price (in USD per share)						$ 43.81
Quarterly contract adjustment payments liability			45,000,000	45,000,000
Accretion of Purchase Contract Adjustment Liability			0	$ 0
Revolving Credit Facility | Line of Credit
Class of Stock [Line Items]
Debt term (in years)		5 years		5 years
Maximum borrowing capacity		$ 300,000,000	$ 300,000,000	$ 300,000,000
2024 Purchase Contracts
Class of Stock [Line Items]
Contract redemption obligation		$ 100
Maximum settlement rate		2.2826
Number of common stock deliverable percentage		85.00%
Quarterly contract adjustment payments percentage		7.125%
2024 Purchase Contracts | Forecast
Class of Stock [Line Items]
Contract redemption obligation	$ 100
Equity Units | Preferred stock, without par value
Class of Stock [Line Items]
Units and shares sold (in shares)		2,200,000
Notional value		$ 220,000,000
Stated value (in USD per share)		$ 100
Undivided beneficial ownership interest		10.00%
Liquidation preference (in USD per share)		$ 1,000
Proceeds from issuance		$ 213,000,000
Convertible Preferred Stock
Class of Stock [Line Items]
Liquidation preference (in USD per share)		$ 1,000			$ 1,000
Dividend rate		0.125%
Conversion ratio		19.0215
Stock conversion price (in USD per share)		$ 52.57
Convertible Preferred Stock | Preferred stock, without par value
Class of Stock [Line Items]
Units and shares sold (in shares)		220,000
Recorded value		$ 213,000,000