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Discontinued Operations, Goodwill, and Intangible Assets (Tables) | 6 Months Ended
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Mar. 31, 2024
Discontinued Operations, Goodwill, and Intangible Assets |
Schedule of balance sheet and income statement information of discontinued operations and significant components included in consolidated statement of cash flows | The following table represents summarized balance sheet information of assets and liabilities held for sale (in millions): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | September 30,
​ |  | 2024 |  | 2023
​ | ​ | ​ | ​ | ​ | ​ | ​
Cash and cash equivalents | ​ | $ | 3.3 | ​ | $ | 1.9
Receivables and contract assets | ​ |  | 101.3 | ​ | ​ | 93.3
Other | ​ |  | 0.5 | ​ | ​ | —
Current assets held for sale | ​ | $ | 105.1 | ​ | $ | 95.2
​ | ​ | ​ | ​ | ​ | ​ | ​
Property and equipment, net | ​ | $ | 15.8 | ​ | $ | 14.2
Write-down of assets to fair value less cost to sell | ​ | ​ | (15.8) | ​ | ​ | (14.2)
Non-current assets held for sale | ​ | $ | — | ​ | $ | —
​ | ​ | ​ | ​ | ​ | ​ | ​
Accounts payable and accrued expenses | ​ | $ | 51.1 | ​ | ​ | 45.6
Current liabilities held for sale | ​ | $ | 51.1 | ​ | $ | 45.6
​ | ​ | ​ | ​ | ​ | ​ | ​
Long-term liabilities held for sale | ​ | $ | 0.8 | ​ | $ | 0.8
​ The following table represents summarized income statement information of discontinued operations (in millions): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended |  | Six months ended
​ | ​ | March 31, | ​ | March 31, |  | March 31, | ​ | March 31,
​ |  | 2024 |  | 2023 |  | 2024 |  | 2023
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Revenue | ​ | $ | 46.5 | ​ | $ | 58.8 | ​ | $ | 101.1 | ​ | $ | 100.5
Cost of revenue | ​ |  | 45.0 | ​ | ​ | 62.1 | ​ | ​ | 97.7 | ​ | ​ | 102.4
Gross profit (loss) | ​ |  | 1.5 | ​ | ​ | (3.3) | ​ | ​ | 3.4 | ​ | ​ | (1.9)
Equity in earnings of joint ventures | ​ |  | (3.4) | ​ | ​ | — | ​ | ​ | (3.4) | ​ | ​ | (1.7)
Loss on disposal activities | ​ | ​ | (109.6) | ​ | ​ | (40.2) | ​ | ​ | (113.1) | ​ | ​ | (40.2)
Transaction costs | ​ | ​ | (0.2) | ​ | ​ | — | ​ | ​ | (0.2) | ​ | ​ | (0.2)
Loss from operations | ​ |  | (111.7) | ​ | ​ | (43.5) | ​ | ​ | (113.3) | ​ | ​ | (44.0)
Other loss | ​ |  | (0.5) | ​ | ​ | — | ​ | ​ | (1.1) | ​ | ​ | —
Loss before taxes | ​ |  | (112.2) | ​ | ​ | (43.5) | ​ | ​ | (114.4) | ​ | ​ | (44.0)
Income tax benefit | ​ |  | (2.8) | ​ | ​ | (1.7) | ​ | ​ | (3.7) | ​ | ​ | (1.8)
Net loss from discontinuing operations | ​ | $ | (109.4) | ​ | $ | (41.8) | ​ | $ | (110.7) | ​ | $ | (42.2)
​ The significant components included in our Consolidated Statement of Cash Flows for the discontinued operations are as follows (in millions): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended |  | Six months ended
​ | ​ | March 31, |  | March 31, | ​ | March 31, |  | March 31,
​ |  | 2024 | ​ | 2023 |  | 2024 | ​ | 2023
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Payments for capital expenditures | ​ | $ | 2.1 | ​ | $ | 0.5 | ​ | $ | 2.1 | ​ | $ | 4.5
​
Schedule of changes in the carrying value of goodwill by reportable segment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Foreign | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | Exchange | ​ | ​ | ​ | ​ | March 31,
​ |  | 2023 |  | Impact |  | Acquired |  | 2024
​ | ​ | (in millions)
Americas | ​ | $ | 2,614.0 | ​ | $ | 0.5 | ​ | $ | 12.2 | ​ | $ | 2,626.7
International | ​ |  | 804.9 | ​ | ​ | 15.4 | ​ | ​ | — | ​ | ​ | 820.3
Total | ​ | $ | 3,418.9 | ​ | $ | 15.9 | ​ | $ | 12.2 | ​ | $ | 3,447.0
Schedule of gross amounts and accumulated amortization of finite intangible assets included in intangible assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2024 | ​ | September 30, 2023 | ​ | ​
​ | ​ | Gross | ​ | Accumulated | ​ | Intangible | ​ | Gross | ​ | Accumulated | ​ | Intangible | ​ | Amortization
​ |  | Amount |  | Amortization |  | Assets, Net |  | Amount |  | Amortization |  | Assets, Net |  | Period
​ | ​ | (in millions) | ​ | (years)
Backlog and Customer relationships | ​ | $ | 671.5 | ​ | $ | (655.4) | ​ | $ | 16.1 | ​ | $ | 663.8 | ​ | $ | (646.0) | ​ | $ | 17.8 | ​ | 1 - 11
Schedule of estimated future amortization expense of intangible assets | ​
​ | ​ | ​ | ​
Fiscal Year |  | (in millions)
2024 (six months remaining) | ​ | $ | 9.2
2025 | ​ |  | 2.1
2026 | ​ |  | 1.5
2027 | ​ |  | 1.5
2028 | ​ | ​ | 1.5
Thereafter | ​ |  | 0.3
Total | ​ | $ | 16.1
​

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