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Debt (Tables) | 12 Months Ended
--- | ---
Sep. 30, 2025
Debt Disclosure [Abstract] |
Schedule of Long-term Debt Instruments | Long-term debt at September 30, 2025 and 2024 consisted of the following:
| 2025 |  | 2024
| (In thousands)
Unsecured 3.00% Senior Notes, due June 2027 | $ | 500,000 |  |  | $ | 500,000 |
Unsecured 2.625% Senior Notes, due September 2029 | 500,000 |  |  | 500,000 |
Unsecured 1.50% Senior Notes, due January 2031 | 600,000 |  |  | 600,000 |
Unsecured 5.45% Senior Notes, due October 2032 | 300,000 |  |  | 300,000 |
Unsecured 5.90% Senior Notes, due November 2033 | 725,000 |  |  | 725,000 |
Unsecured 5.95% Senior Notes, due October 2034 | 200,000 |  |  | 200,000 |
Unsecured 5.20% Senior Notes, due August 2035 | 500,000 |  |  | — |
Unsecured 5.50% Senior Notes, due June 2041 | 400,000 |  |  | 400,000 |
Unsecured 4.15% Senior Notes, due January 2043 | 500,000 |  |  | 500,000 |
Unsecured 4.125% Senior Notes, due October 2044 | 750,000 |  |  | 750,000 |
Unsecured 4.30% Senior Notes, due October 2048 | 600,000 |  |  | 600,000 |
Unsecured 4.125% Senior Notes, due March 2049 | 450,000 |  |  | 450,000 |
Unsecured 3.375% Senior Notes, due September 2049 | 500,000 |  |  | 500,000 |
Unsecured 2.85% Senior Notes, due February 2052 | 600,000 |  |  | 600,000 |
Unsecured 5.75% Senior Notes, due October 2052 | 500,000 |  |  | 500,000 |
Unsecured 6.20% Senior Notes, due November 2053 | 500,000 |  |  | 500,000 |
Unsecured 5.00% Senior Notes, due December 2054 | 650,000 |  |  | — |
Medium term Series A notes, 1995-1, 6.67%, due December 2025 | 10,000 |  |  | 10,000 |
Unsecured 6.75% Debentures, due July 2028 | 150,000 |  |  | 150,000 |
Finance lease obligations (see Note 7) | 47,234 |  |  | 48,890 |
Total long-term debt | 8,982,234 |  |  | 7,833,890 |
Less: |  |  |
Net original issue premium on unsecured senior notes and debentures | (1,332) |  |  | (9,071) |
Debt issuance cost | 64,622 |  |  | 57,664 |
Current maturities | 11,775 |  |  | 1,651 |
| $ | 8,907,169 |  |  | $ | 7,783,646 |
Schedule of Maturities of Long-term Debt | Maturities of long-term debt, excluding our finance lease obligations, at September 30, 2025 were as follows by fiscal years (in thousands):
2026 | $ | 10,000 |
2027 | 500,000 |
2028 | 150,000 |
2029 | 500,000 |
2030 | — |
Thereafter | 7,775,000 |
| $ | 8,935,000 |
The following table summarizes the maturities of the securitized long-term debt and the amortization expense related to the securitized intangible asset expected to be recognized in our consolidated statements of comprehensive income:
|  | Maturities of Securitized Long-Term Debt |  | Amortization Expense of Securitized Intangible Asset
For the fiscal year ending: |  | (In thousands)
2026 |  | $ | 8,767 |  |  | $ | 8,555 |
2027 |  | 9,086 |  |  | 9,001 |
2028 |  | 9,561 |  |  | 9,471 |
2029 |  | 10,060 |  |  | 9,966 |
2030 |  | 10,585 |  |  | 10,486 |
Thereafter |  | 28,944 |  |  | 27,648 |
Total |  | $ | 77,003 |  |  | $ | 75,127 |

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