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v3.21.2

Debt - Narrative (Details) |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 28, 2021 USD ($) | Dec. 31, 2021 | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($)
Debt Instrument [Line Items] |  |  |  |  |
Annual effective interest rate |  |  | 2.05% |  |
Outstanding balance |  |  | $ 1,509,692,000 | $ 28,895,000 |
Costs related to debt financing |  |  | $ 8,509,000 | $ 0 | $ 0
Secured Debt |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Floor interest rate | 0.50% |  |  |  |
Net total leverage ratio |  |  | 2.3 |  |
Maximum amount netted against funded debt |  |  | $ (75,000,000) |  |
Net total leverage ratio maximum |  |  | 400.00% |  |
Covenant, interest coverage ratio, minimum |  |  | 300.00% |  |
Covenant, interest coverage ratio |  |  | 1700.00% |  |
Secured Debt | Term Loan A, due 2026 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, face amount | $ 1,100,000,000 |  |  |  |
Secured Debt | Term Loan A, due 2026 | LIBOR |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate | 1.75% |  |  |  |
Net total leverage ratio | 2.5 |  |  |  |
Secured Debt | Term Loan A, due 2026 | LIBOR | Forecast |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate |  | 1.50% |  |  |
Secured Debt | Term Loan B, due 2028 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, face amount | $ 400,000,000 |  |  |  |
Secured Debt | Term Loan B, due 2028 | LIBOR |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate | 2.00% |  |  |  |
Line of Credit | Revolving Credit Facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing capacity | $ 600,000,000 |  |  |  |
Outstanding balance |  |  | $ 0 |  |
Bridge Loan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Costs related to debt financing |  |  | $ 8,500,000 |  |

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