Financial Instruments (Derivative Income Statement Location, Gains & Losses) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Foreign exchange contracts \| Designated derivative Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(losses) recognized in OCI	$ 0.0	$ (0.2)	$ 0.0	$ (0.9)
Foreign exchange contracts \| Other income/(expense), net \| Undesignated derivative instruments
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(losses) recognized in income	4.7	36.7	(28.6)	57.4
Foreign exchange contracts \| Amounts reclassified from AOCI \| Accumulated Net Gain (Loss) from Cash Flow Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain reclassified from AOCI into income	0.0	0.3	0.0	8.6
Interest rate contracts, net \| Interest expense \| Designated derivative Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(losses) recognized in income	$ (1.0)	$ (1.1)	$ (4.9)	$ (2.5)

The aggregate cost of goods produced and sold and services rendered during the reporting period.

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Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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