Reconciliation of Total Segment Adjusted EBITDA to Income Before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Total Segment Adjusted EBITDA	$ 266.0	$ 347.9	$ 511.0	$ 664.9
Interest expense	(56.2)	(54.4)	(109.6)	(107.6)
Depreciation and amortization	(136.5)	(130.2)	(277.3)	(258.0)
Restructuring and acquisition-related costs	(12.2)	(36.8)	(24.3)	(55.1)
Gain on sale of business	0.0	15.5	0.0	15.5
Gain on settlement of capital lease	0.0	15.6	0.0	15.6
Debt refinancing and redemption costs	(2.4)	(4.3)	(2.4)	(14.6)
Income before income taxes	$ 58.7	$ 153.3	$ 97.4	$ 260.7

Gain (loss) on settlement of capital lease

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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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Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

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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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