| **Investment in and Advances to Unconsolidated Affiliates - Affiliate Balance Sheet (Details) - USD ($) $ in Millions** | Mar. 31, 2020 | Dec. 31, 2019 |
|-------------------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Investments in and Advances to Affiliates, Affiliate Balance Sheet [Abstract]**                                       |          |          |
| Current assets                                                                                                          | $ 126.6       | $ 64.0        |
| Property and equipment, net                                                                                             | 273.1         | 256.1         |
| Other assets, net                                                                                                       | 246.0         | 240.1         |
| Total assets                                                                                                            | 645.7         | 560.2         |
| Current liabilities                                                                                                     | 112.7         | 73.3          |
| Long-term debt                                                                                                          | 775.6         | 745.0         |
| Other liabilities                                                                                                       | 41.8          | 20.6          |
| Members' deficit                                                                                                        | (284.4)       | (278.7)       |
| Total liabilities and members' deficit                                                                                  | $ 645.7       | $ 560.2       |

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The amount of property, plant, and equipment assets reported by an equity method investment of the entity.
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No definition available.
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No definition available.
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The amount of assets reported by an equity method investment of the entity.
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The amount of current liabilities reported by an equity method investment of the entity.
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Amount of equity, including noncontrolling interest, reported by an equity method investment of the entity.
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The amount of liabilities and equity reported by an equity method investment of the entity.
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| - Definition
The amount of noncurrent assets reported by an equity method investment of the entity.
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The amount of noncurrent liabilities reported by an equity method investment of the entity.
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