Debt - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended	9 Months Ended
	Dec. 31, 2022	Jun. 30, 2023	Jun. 30, 2023	Jun. 30, 2022	Mar. 01, 2023
Debt Instrument [Line Items]
Repayments on borrowings			$ 915,000,000.0	$ 600,000
2022 Credit Facilities
Debt Instrument [Line Items]
Original principal amount of debt		$ 950,000,000	950,000,000
2022 Credit Facilities | Minimum | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Spread on variable rates		1.375%
2022 Credit Facilities | Minimum | Base Rate
Debt Instrument [Line Items]
Spread on variable rates		0.375%
2022 Credit Facilities | Maximum | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Spread on variable rates		2.25%
2022 Credit Facilities | Maximum | Base Rate
Debt Instrument [Line Items]
Spread on variable rates		1.25%
2022 Credit Facilities | Revolver (a) | Line of Credit
Debt Instrument [Line Items]
Repayments on borrowings			290,000,000
Expense			1,100,000
2022 Term Loans | Secured Debt | Line of Credit
Debt Instrument [Line Items]
Original principal amount of debt		$ 475,000,000	475,000,000
Term of debt	5 years
Quarterly installment repayments		5,900,000
2022 Term Loans | Revolver (a) | Line of Credit
Debt Instrument [Line Items]
Repayments on borrowings			445,600,000
2022 Revolver | Revolver (a) | Line of Credit
Debt Instrument [Line Items]
Original principal amount of debt		475,000,000	475,000,000
Term of debt	5 years
Line of credit facility, maximum borrowing capacity, sublimit		$ 100,000,000	100,000,000
Trade Receivables Facility | Secured Debt | Line of Credit
Debt Instrument [Line Items]
Original principal amount of debt					$ 175,000,000
Gain on extinguishment of debt			$ 1,000,000