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Leases (Tables) | 12 Months Ended
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Sep. 30, 2024
Leases |
Schedule of components of lease expenses | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Fiscal Year Ended
​ | ​ | September 30, 2024 |  | September 30, 2023 |  | September 30, 2022
​ | ​ | (in millions)
Operating lease cost | ​ | $ | 149.1 | ​ | $ | 164.0 | ​ | $ | 172.5
Finance lease cost: | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization of right-of-use assets | ​ |  | 28.4 | ​ | ​ | 23.1 | ​ | ​ | 18.0
Interest on lease liabilities | ​ |  | 2.9 | ​ | ​ | 2.6 | ​ | ​ | 2.2
Variable lease cost | ​ |  | 34.6 | ​ | ​ | 34.1 | ​ | ​ | 34.0
Total lease cost | ​ | $ | 215.0 | ​ | $ | 223.8 | ​ | $ | 226.7
Schedule of additional balance sheet information related to leases | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(in millions except as noted) |  | Balance Sheet Classification |  | September 30, 2024 |  | September 30, 2023
Assets: |  |  |  | ​ | ​ | ​ | ​ |
Operating lease assets |  | Operating lease right-of-use assets | ​ | $ | 432.2 | ​ | $ | 447.0
Finance lease assets |  | Property and equipment – net | ​ | ​ | 62.1 | ​ | ​ | 64.8
Total lease assets |  |  | ​ | $ | 494.3 | ​ | $ | 511.8
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Liabilities: |  |  | ​ | ​ | ​ | ​ | ​ | ​
Current: |  |  | ​ | ​ | ​ | ​ | ​ | ​
Operating lease liabilities |  | Accrued expenses and other current liabilities | ​ | $ | 135.1 | ​ | $ | 139.8
Finance lease liabilities |  | Current portion of long-term debt | ​ | ​ | 25.5 | ​ | ​ | 25.0
Total current lease liabilities |  |  | ​ | ​ | 160.6 | ​ | ​ | 164.8
Non-current: |  |  | ​ | ​ | ​ | ​ | ​ | ​
Operating lease liabilities |  | Operating lease liabilities, noncurrent | ​ | ​ | 510.6 | ​ | ​ | 548.9
Finance lease liabilities |  | Long-term debt | ​ | ​ | 35.7 | ​ | ​ | 39.8
Total non-current lease liabilities |  |  | ​ | $ | 546.3 | ​ | $ | 588.7
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of | ​
​ |  | September 30, 2024 |  | September 30, 2023 |  | September 30, 2022 | ​
Weighted average remaining lease term (in years): | ​ | ​ |  | ​ |  | ​ | ​
Operating leases |  | 6.2 | ​ | 6.4 | ​ | 6.5 | ​
Finance leases |  | 2.6 | ​ | 2.9 | ​ | 3.1 | ​
Weighted average discount rates: |  | ​ | ​ | ​ | ​ | ​ | ​
Operating leases |  | 5.1 | % | 4.3 | % | 4.0 | %
Finance leases |  | 4.4 | % | 4.1 | % | 3.8 | %
Schedule of additional cash flow information related to leases | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fiscal Year Ended
​ | ​ | September 30, | ​ | September 30, | ​ | September 30,
​ |  | 2024 |  | 2023 |  | 2022
​ | ​ | (in millions)
Cash paid for amounts included in the measurement of lease liabilities: | ​ | ​ | ​ | ​ | ​ |  | ​ | ​ | ​
Operating cash flows from operating leases | ​ | $ | 184.9 | ​ | $ | 188.3 | ​ | $ | 201.8
Operating cash flows from finance leases | ​ | ​ | 3.0 | ​ | ​ | 2.5 | ​ | ​ | 2.2
Financing cash flows from finance leases | ​ | ​ | 28.9 | ​ | ​ | 23.7 | ​ | ​ | 19.8
Right-of-use assets obtained in exchange for new operating leases | ​ | ​ | 90.1 | ​ | ​ | 96.6 | ​ | ​ | 90.9
Right-of-use assets obtained in exchange for new finance leases | ​ | ​ | 26.6 | ​ | ​ | 37.5 | ​ | ​ | 26.2
Schedule of total remaining lease payments under both the Company's operating and finance leases | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Operating Leases |  | Finance Leases
Fiscal Year | ​ | (in millions)
2025 | ​ | $ | 164.4 | ​ | $ | 27.7
2026 | ​ |  | 135.2 | ​ |  | 21.6
2027 | ​ |  | 104.1 | ​ |  | 12.9
2028 | ​ |  | 90.4 | ​ |  | 2.9
2029 | ​ | ​ | 75.0 | ​ | ​ | 0.1
Thereafter | ​ |  | 187.1 | ​ |  | —
Total lease payments | ​ | $ | 756.2 | ​ | $ | 65.2
Less: Amounts representing interest | ​ | $ | (110.5) | ​ | $ | (4.0)
Total lease liabilities | ​ | $ | 645.7 | ​ | $ | 61.2
​

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