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Debt - Debt Capitalization Narrative (Details) | Sep. 30, 2024 | Nov. 30, 2023 | Sep. 30, 2023 | Sep. 30, 2022
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Revolving Credit Facility | Line of Credit |  |  |  |
Short-Term Debt [Line Items] |  |  |  |
Debt instrument, covenant, total indebtedness to EBITDA ratio | 3.50 |  |  |
Acquisition Corp. | Revolving Credit Facility |  |  |  |
Short-Term Debt [Line Items] |  |  |  |
Debt instrument, covenant, total indebtedness to EBITDA ratio |  | 3.60 |  |
2.750% Senior Secured Notes due 2028 | Acquisition Corp. |  |  |  |
Short-Term Debt [Line Items] |  |  |  |
Interest rate (as a percent) | 2.75% |  |  |
3.750% Senior Secured Notes |  |  |  |
Short-Term Debt [Line Items] |  |  |  |
Interest rate (as a percent) | 3.75% |  | 3.75% | 3.75%
3.750% Senior Secured Notes | Acquisition Corp. |  |  |  |
Short-Term Debt [Line Items] |  |  |  |
Interest rate (as a percent) | 3.75% |  |  |
3.875% Senior Secured Notes due 2030 | Acquisition Corp. |  |  |  |
Short-Term Debt [Line Items] |  |  |  |
Interest rate (as a percent) | 3.875% |  |  |
2.250% Senior Secured Notes | Acquisition Corp. |  |  |  |
Short-Term Debt [Line Items] |  |  |  |
Interest rate (as a percent) | 2.25% |  |  |
3.000% Senior Secured Notes due 2031 | Acquisition Corp. |  |  |  |
Short-Term Debt [Line Items] |  |  |  |
Interest rate (as a percent) | 3.00% |  |  |

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