Derivative Financial Instruments Derivative Financial Instruments (Location of gain (loss) recognized in income related to hedges and derivatives) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Selling, general and administrative expense	$ 1,228.1	$ 1,140.6	$ 1,060.9
Reclassification out of Accumulated Other Comprehensive Income \| Foreign exchange contract \| Cash flow hedging \| Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Selling, general and administrative expense	0.0	0.1	(0.8)
Cost of Sales \| Foreign exchange contract
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	0.2	0.2	(0.3)
Total gain (loss) recognized in income associated with hedges and derivatives	4.6	(1.2)	(4.0)
Cost of Sales \| Foreign exchange contract \| Cash flow hedging
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	(7.6)	(4.8)	(9.0)
Total cash flow hedge gain (loss) recognized in income	4.4	(1.4)	(3.7)
Cost of Sales \| Reclassification out of Accumulated Other Comprehensive Income \| Foreign exchange contract \| Cash flow hedging
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(12.0)	(3.4)	(5.3)
Selling, General and Administrative Expenses \| Foreign exchange contract
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
Total gain (loss) recognized in income associated with hedges and derivatives	0.0	(0.1)	0.9
Selling, General and Administrative Expenses \| Foreign exchange contract \| Cash flow hedging
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	0.1
Total cash flow hedge gain (loss) recognized in income	0.0	(0.1)	0.9
Operating Expense \| Reclassification out of Accumulated Other Comprehensive Income \| Foreign exchange contract \| Cash flow hedging
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(9.1)	1.0	(102.2)
Other Nonoperating Income (Expense) \| Foreign exchange contract
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(10.2)	(11.4)	43.0
Total gain (loss) recognized in income associated with hedges and derivatives	(54.2)	(22.7)	(36.2)
Other Nonoperating Income (Expense) \| Foreign exchange contract \| Cash flow hedging
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	(34.9)	(12.3)	23.0
Total cash flow hedge gain (loss) recognized in income	(44.0)	(11.3)	(79.2)
Sales \| Foreign exchange contract
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(1.6)	(1.7)	0.9
Total gain (loss) recognized in income associated with hedges and derivatives	(27.6)	(6.3)	(28.9)
Sales \| Foreign exchange contract \| Cash flow hedging
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	0.6	(2.2)	9.5
Total cash flow hedge gain (loss) recognized in income	(26.0)	(4.6)	(29.8)
Sales \| Reclassification out of Accumulated Other Comprehensive Income \| Foreign exchange contract \| Cash flow hedging
Location of gain (loss) recognized in income related to hedges and derivatives [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ (26.6)	$ (2.4)	$ (39.3)

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

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Total cash flow hedge gain (loss) recognized in income

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Total gain (loss) recognized in income associated with hedges and derivatives

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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The net gain (loss) relating to components of the gain (loss) on the cash flow hedging instrument excluded from the assessment of cash flow hedge effectiveness. Recognized in earnings.

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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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