Derivative Financial Instruments (Location of gain (loss) recognized in income related to hedges and derivatives) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Revenues	$ 3,335.1	$ 3,143.8	$ 9,682.3	$ 9,229.9
Selling, general and administrative expense	(298.1)	(250.6)	(919.7)	(835.1)
Other income (expense), net	(57.7)	10.4	(156.5)	(12.6)
Sales [Member] \| Foreign exchange contracts
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(0.1)		(1.2)	(0.9)
Total gain (loss) recognized in income associated with hedges and derivatives	(0.6)	(6.5)	(15.3)	(3.0)
Cost of Sales [Member] \| Foreign exchange contracts
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	0.1	0.2		0.4
Total gain (loss) recognized in income associated with hedges and derivatives	(1.2)	7.4	1.4	10.7
Selling, General and Administrative Expenses [Member] \| Foreign exchange contracts
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	0.0	0.0	0.0	0.0
Total gain (loss) recognized in income associated with hedges and derivatives	0.0	(0.1)	0.1	(0.1)
Other Nonoperating Income (Expense) [Member] \| Foreign exchange contracts
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(19.4)	(5.3)	(14.4)	(6.9)
Total gain (loss) recognized in income associated with hedges and derivatives	(4.7)	(27.1)	(23.2)	(30.2)
Cash Flow Hedging \| Sales [Member] \| Foreign exchange contracts
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net	2.6	(5.7)	1.5	(4.9)
Total cash flow hedge gain (loss) recognized in income	(0.5)	(6.5)	(14.1)	(2.1)
Cash Flow Hedging \| Cost of Sales [Member] \| Foreign exchange contracts
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net	(2.9)	6.1	(5.1)	4.1
Total cash flow hedge gain (loss) recognized in income	(1.3)	7.2	1.4	10.3
Cash Flow Hedging \| Selling, General and Administrative Expenses [Member] \| Foreign exchange contracts
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net	0.0	0.0	0.0	0.0
Total cash flow hedge gain (loss) recognized in income	0.0	(0.1)	0.1	(0.1)
Cash Flow Hedging \| Other Nonoperating Income (Expense) [Member] \| Foreign exchange contracts
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net	(8.6)	(26.6)	(30.7)	(23.4)
Total cash flow hedge gain (loss) recognized in income	14.7	(21.8)	(8.8)	(23.3)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] \| Amount Reclassified out of Accumulated Other Comprehensive Loss \| Cash Flow Hedging \| Foreign exchange contracts
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Revenues	(3.1)	(0.8)	(15.6)	2.8
Cost of Revenue	1.6	1.1	6.5	6.2
Selling, general and administrative expense	0.0	(0.1)	0.1	(0.1)
Other income (expense), net	$ 23.3	$ 4.8	$ 21.9	$ 0.1

[Line Items] for Location of gain (loss) recognized in income related to hedges and derivatives [Table]

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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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