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Debt (Tables) | 12 Months Ended
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Sep. 30, 2023
Debt Disclosure [Abstract] |
Schedule of Short- and Long-term Debt Obligations | As of September 30, 2023 and 2022, we had the following short- and long-term debt obligations:
(in thousands) |  | September 30, |
|  | 2023 |  |  | 2022 |
4.000% Senior Notes due 2028 |  | $ | 500,000 |  |  | $ | 500,000 |
3.625% Senior Notes due 2025 |  |  | 500,000 |  |  |  | 500,000 |
Credit facility revolver line(1)(2) |  |  | 202,000 |  |  |  | 359,000 |
Credit facility term loan(1)(2) |  |  | 500,000 |  |  |  | — |
Total debt |  |  | 1,702,000 |  |  |  | 1,359,000 |
Unamortized debt issuance costs for the Senior Notes(3) |  |  | (6,215 | ) |  |  | (8,372 | )
Total debt, net of issuance costs(4) |  | $ | 1,695,785 |  |  | $ | 1,350,628 |
(1) Unamortized debt issuance costs related to the credit facility were $2.3 million included in Other current assets and $7.5 million included in Other assets on the Consolidated Balance Sheet as of September 30, 2023 and $2.7 million included in Other assets on the Consolidated Balance Sheet as of September 30, 2022. (2) Both the revolving line and the term loan will mature and all amounts then outstanding will become due and payable on January 3, 2028, unless the 2025 notes have not been either refinanced to mature on or after April 3, 2028 or repaid, in which case the amounts will become due on November 16, 2024. The term loan will begin amortizing in March 2024, with payments of $9.4 million in 2024, $21.9 million in 2025, $25.0 million in 2026 and 2027, and $418.7 million in 2028. (3) Unamortized debt issuance costs for the Senior Notes were included in Long-term debt on the Consolidated Balance Sheets. (4) As of September 30, 2023, $9.4 million of debt associated with the credit facility term loan was classified as short term with the remaining balance classified as long term. As of September 30, 2022, all debt was classified as long term.

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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