Reconciliation of Total Segment Adjusted EBITDA to Income Before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information [Line Items]
Total Segment Adjusted EBITDA	$ 245.0	$ 317.0
Interest expense	(53.4)	(53.2)
Depreciation and amortization	(140.8)	(127.8)
Restructuring and acquisition-related costs	(12.1)	(18.3)
Debt refinancing and redemption costs	0.0	(10.3)
Income before income taxes	$ 38.7	$ 107.4

Costs incurred for restructuring initiatives as well as expenses directly related to acquisition activity.

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Segment Adjusted EBITDA is defined as earnings before interest, income taxes, depreciation and amortization for our reportable segments, excluding the impact of restructuring and acquisition-related costs, debt refinancing and redemption costs and non-recurring items

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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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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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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.

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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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