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Reconciliation of Segment Adjusted EBITDA (Non-GAAP Measure) to Income Before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Segment Adjusted EBITDA	$ 297.7	$ 156.7	$ 807.0	$ 471.3
Interest expense	(57.5)	(23.2)	(139.9)	(70.2)
Depreciation and amortization	(122.6)	(49.9)	(303.4)	(150.4)
Restructuring and acquisition-related costs	(22.8)	0.0	(90.5)	0.0
Acquisition-related fair value inventory adjustment	0.0	0.0	(24.9)	0.0
Impact of change in accounting principle	0.0	0.0	3.7	0.0
Debt refinancing and redemption costs	0.0	0.0	(2.7)	0.0
Asset Impairment Charges	0.0	(3.4)	0.0	(3.4)
Final distribution of Reserve Yield Plus Fund	0.0	0.0	0.0	1.0
Other	0.1	(0.7)	0.2	(0.7)
Income before income taxes	92.0	79.5	246.6	247.6
Pension Plan [Member]
Segment Reporting Information [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	$ (2.9)	$ 0.0	$ (2.9)	$ 0.0

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Fair Value Inventory Adjustment from Acquisition of MPG - Inventory in process written up to fair value in purchase accounting that was sold in the period. Cost of goods sold (inventory) artificially high due to fair value mark up.

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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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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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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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