| **Investments in and Advances to Unconsolidated Affiliates - Affiliate Balance Sheet (Details) - USD ($) $ in Millions** | Jun. 30, 2023 | Dec. 31, 2022 |
|--------------------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Assets**                                                                                                               |          |          |
| Current assets                                                                                                           | $ 583.2       | $ 344.5       |
| Other assets, net                                                                                                        | 32.9          | 27.0          |
| Total assets                                                                                                             | 6,578.6       | 6,206.8       |
| **LIABILITIES AND SHAREHOLDERS' EQUITY**                                                                                 |          |          |
| Current liabilities                                                                                                      | 648.0         | 621.6         |
| Other liabilities                                                                                                        | 142.7         | 122.4         |
| Members' deficit                                                                                                         | 846.7         | 552.4         |
| Total liabilities and shareholders' equity                                                                               | 6,578.6       | 6,206.8       |
| Equity Method Investment, Nonconsolidated Investee or Group of Investees                                                 |          |          |
| **Assets**                                                                                                               |          |          |
| Current assets                                                                                                           | 86.4          | 91.0          |
| Property and equipment, net                                                                                              | 342.5         | 345.7         |
| Other assets, net                                                                                                        | 264.4         | 265.0         |
| Total assets                                                                                                             | 693.3         | 701.7         |
| **LIABILITIES AND SHAREHOLDERS' EQUITY**                                                                                 |          |          |
| Current liabilities                                                                                                      | 107.3         | 97.9          |
| Long-term debt                                                                                                           | 846.4         | 838.6         |
| Other liabilities                                                                                                        | 0.4           | 0.2           |
| Members' deficit                                                                                                         | (260.8)       | (235.0)       |
| Total liabilities and shareholders' equity                                                                               | $ 693.3       | $ 701.7       |

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| - Definition
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