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Segment Reporting - Table 3 (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
General and administrative expenses | $ (61.1) | $ (36.5)
Depreciation and amortization | (45.9) | (45.2)
Net income attributable to noncontrolling interests | 21.4 | 17.6
Income from continuing operations before income tax expense | 135.7 | 124.4
Operating Segments [Member] |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
Total segment Adjusted EBITDA | 257.3 | 229.3
Segment Reconciling Items [Member] |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
General and administrative expenses | (61.1) | (36.5)
Depreciation and amortization | (45.9) | (45.2)
(Loss) gain on disposal of assets | (0.8) | 0.5
Interest expense and amortization of debt discounts and fees | (35.6) | (41.3)
Net income attributable to noncontrolling interests | 21.4 | 17.6
SARs mark-to-market impact on noncontrolling interests | 1.0 | 0.0
Change in fair market value of equity securities | $ (0.6) | $ 0.0

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