| **Segment Reporting - Table 3 (Details) - USD ($) $ in Millions**                                             | 3 Months Ended |
|---------------------------------------------------------------------------------------------------------------|----------------|
||
| **Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]** |           |   |
| General and administrative expenses                                                                           | $ (36.5)       | $ (31.9) |
| Depreciation and amortization                                                                                 | (45.2)         | (42.4) |
| Professional fees - accounting, tax, and legal                                                                | 0.0            | (0.2) |
| Loss on early extinguishment of debt                                                                          | 0.0            | (2.4) |
| Net income attributable to noncontrolling interests                                                           | 17.6           | 18.7 |
| Income from continuing operations before income tax expense                                                   | 124.4          | 116.5 |
| Operating Segments [Member]                                                                                   |           |   |
| **Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]** |           |   |
| Total segment Adjusted EBITDA                                                                                 | 229.3          | 219.5 |
| Segment Reconciling Items [Member]                                                                            |           |   |
| **Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]** |           |   |
| General and administrative expenses                                                                           | 36.5           | 31.9 |
| Depreciation and amortization                                                                                 | 45.2           | 42.4 |
| Gain (loss) on disposal or impairment of assets                                                               | 0.5            | (0.2) |
| Professional fees - accounting, tax, and legal                                                                | 0.0            | 0.2 |
| Loss on early extinguishment of debt                                                                          | 0.0            | (2.4) |
| Interest expense and amortization of debt discounts and fees                                                  | 41.3           | 44.6 |
| Net income attributable to noncontrolling interests                                                           | $ 17.6         | $ 18.7 |

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Adjusted earnings before interest, taxes, depreciation, and amortization as defined in the Company's credit agreement.
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| - Definition
The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.
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| - Definition
Amount of gain (loss) from the difference between the sale price or salvage price and the book value of an asset that was sold or retired, and gain (loss) from the write down of assets from their carrying value to fair value.
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| - Definition
Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.
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| - Definition
The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.
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| - Definition
Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.
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Amount of the cost of borrowed funds accounted for as interest expense for debt.
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| - Definition
Amount of Net Income (Loss) attributable to noncontrolling interest.
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| - Definition
A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
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