Segment Reporting - Financial Information by Regional Segment (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Gross Revenue	$ 3,021.5	$ 2,910.3
Intercompany Revenue	(467.6)	(439.7)
Net Revenue	2,553.9	2,470.6
Depreciation, Amortization, Depletion and Accretion	289.5	272.0
Operating Income (Loss)	433.0	422.8
Capital Expenditures	346.8	299.3
Total Assets	22,908.9	21,782.0	$ 22,683.8
Corporate entities
Segment Reporting Information [Line Items]
Gross Revenue	46.1	41.3
Intercompany Revenue	(5.3)	(3.6)
Net Revenue	40.8	37.7
Depreciation, Amortization, Depletion and Accretion	26.5	24.5
Operating Income (Loss)	(113.2)	(88.8)
Capital Expenditures	150.4	128.2
Total Assets	2,162.9	1,698.2
Group 1 \| Operating Segments
Segment Reporting Information [Line Items]
Gross Revenue	1,507.5	1,430.9
Intercompany Revenue	(252.9)	(237.7)
Net Revenue	1,254.6	1,193.2
Depreciation, Amortization, Depletion and Accretion	128.5	121.5
Operating Income (Loss)	311.7	288.3
Capital Expenditures	114.0	86.9
Total Assets	11,376.6	11,103.6
Group 2 \| Operating Segments
Segment Reporting Information [Line Items]
Gross Revenue	1,467.9	1,438.1
Intercompany Revenue	(209.4)	(198.4)
Net Revenue	1,258.5	1,239.7
Depreciation, Amortization, Depletion and Accretion	134.5	126.0
Operating Income (Loss)	234.5	223.3
Capital Expenditures	82.4	84.2
Total Assets	$ 9,369.4	$ 8,980.2

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method.

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The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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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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