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v3.24.2

Long-Term Debt - Additional Information (Details) - USD ($) $ in Millions |  |  |  |  |  | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
May 28, 2024 | Aug. 31, 2023 | Aug. 28, 2023 | Apr. 22, 2022 | Dec. 18, 2013 | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 27, 2024 | Sep. 30, 2023
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt repayments |  |  |  |  |  | $ 0.0 | $ 9.0 |  |
Debt voluntary repayment |  |  |  |  |  | 82.2 | 448.0 |  |
Debt borrowings during the period |  |  |  |  |  | 0.5 | 460.0 |  |
Long-term debt, fair value |  |  |  |  |  | 822.1 |  |  | $ 900.1
Receivables Financing Agreement | Wholly-owned Subsidiary |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit agreement, maximum borrowing capacity |  |  |  |  |  |  |  | $ 325.0 |
Letters of credits, outstanding amount |  |  |  |  |  | 81.2 |  |  | 30.4
Debt voluntary repayment |  |  |  |  |  | 0.5 | 460.0 |  |
Debt borrowings during the period |  |  |  |  |  | 82.2 | 448.0 |  |
SOFR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 0.50% |  |  |  |  |  |  |  |
ABR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 1.50% |  |  |  |  |  |  |  |
Credit Agreement | First Lien Credit Facility Term Loans |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit agreement date |  |  |  |  | Dec. 18, 2013 |  |  |  |
Debt instrument, term |  |  |  |  | 7 years |  |  |  |
Credit agreement, maximum borrowing capacity |  |  |  |  | $ 1,460.0 |  |  |  |
Credit Agreement | First Lien Revolving Credit Facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, term |  |  |  |  | 5 years |  |  |  |
Credit agreement, maximum borrowing capacity |  |  |  |  | $ 210.0 |  |  |  |
Amended Credit Agreement |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Percentage of prepayment premium for voluntary prepayments |  | 1.00% |  |  |  |  |  |  |
Debt borrowings during the period |  |  | $ 450.0 |  |  |  |  |  |
Amended Credit Agreement | SOFR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 2.50% |  |  |  |  |  |  |  |
Amended Credit Agreement | ABR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 1.50% |  |  |  |  |  |  |  |
Amended Credit Agreement | First Lien Revolving Credit Facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, term |  |  |  | 5 years |  |  |  |  |
Credit agreement, maximum borrowing capacity |  |  |  | $ 300.0 |  |  |  |  |
Amended Credit Agreement | Series B Term Loan |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, term |  |  |  | 7 years |  |  |  |  |
Credit agreement, maximum borrowing capacity |  |  |  | $ 1,200.0 |  |  |  |  |
Debt instrument, original discount |  |  |  | $ 12.0 |  |  |  |  |
Debt repayments |  |  |  |  |  |  | 9.0 |  |
Debt instrument, maturity date |  |  |  | Apr. 22, 2029 |  |  |  |  |
Debt instrument, effective interest rate |  |  |  | 3.42% |  |  |  |  |
Previous Revolving Credit Facility | First Lien Revolving Credit Facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit agreement, maximum borrowing capacity |  |  |  | $ 260.0 |  |  |  |  |
Letters of credits, outstanding amount |  |  |  |  |  | $ 42.6 |  |  | $ 42.6
Revolving Credit Facility | SOFR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 0.00% |  |  |  |  |
Revolving Credit Facility | ABR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 1.00% |  |  |  |  |
Revolving Credit Facility | ABR | Maximum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 1.50% |  |  |  |  |
Revolving Credit Facility | ABR | Minimum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 1.00% |  |  |  |  |
Revolving Credit Facility | First Lien Revolving Credit Facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, term |  |  |  | 5 years |  |  |  |  |
Credit agreement, maximum borrowing capacity |  |  |  | $ 300.0 |  |  |  |  |
Debt instrument, maturity date |  |  |  | Apr. 22, 2027 |  |  |  |  |
Debt voluntary repayment |  |  |  |  |  |  | $ 33.5 |  |
Revolving Credit Facility | First Lien Revolving Credit Facility | LIBOR [Member] | Maximum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 2.50% |  |  |  |  |
Revolving Credit Facility | First Lien Revolving Credit Facility | LIBOR [Member] | Minimum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 2.00% |  |  |  |  |

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