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v3.23.3

Leases (Details) - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Lessee, Lease, Description [Line Items] |  |  |
Operating Lease, Right-of-Use Asset | $ 177,000,000 | $ 155,000,000 |
Finance Lease, Right-of-Use-Asset, after Accumulated Amortization | 572,000,000 | 630,000,000 |
Total lease assets | 749,000,000 | 785,000,000 |
Operating Lease, Liability, Current | 71,000,000 |  |
Operating Lease, Liability, Noncurrent | 93,000,000 | 93,000,000 |
Finance Lease, Liability, Noncurrent | 576,000,000 | 628,000,000 |
Total lease liabilities | 796,000,000 | 839,000,000 |
Operating Lease, Cost | 69,000,000 | 56,000,000 | $ 52,000,000
Variable Lease, Cost | 134,000,000 | 78,000,000 | 75,000,000
Short-term Lease, Cost | 18,000,000 | 26,000,000 | 12,000,000
Finance Lease, Right-of-Use Asset, Amortization | 57,000,000 | 58,000,000 | 51,000,000
Finance Lease, Interest Expense | 43,000,000 | 42,000,000 | 39,000,000
Total finance lease costs | 100,000,000 | 100,000,000 | 90,000,000
Lease, Cost | $ 321,000,000 | $ 260,000,000 | $ 229,000,000
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Accounts Payable and Accrued Liabilities, Current | Accounts Payable and Accrued Liabilities, Current |
Operating lease under PPA | $ 135,000,000 | $ 133,000,000 |
Leases |  |  |
Finance lease under PPA | $ 390,000,000 | 425,000,000 |
Operating lease liability |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Accounts Payable and Accrued Liabilities |  | $ 59,000,000 |

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