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Fair Value Measurements (Fair Value Of Assets And Liabilities Measured On Recurring Basis) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Liabilities:
Contingent consideration	$ 18.8	$ 19.6
Fair Value, Measurements, Recurring [Member]
Liabilities:
Contingent consideration	4.5	5.0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member]
Liabilities:
Contingent consideration	0.0	0.0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Demand and time deposits [Member]
Assets:
Cash and cash equivalents	67.2	9.5
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Money Market Funds [Member]
Assets:
Cash and cash equivalents	30.3	33.2
Fair Value, Measurements, Recurring [Member] | Significant Observable Inputs (Level 2) [Member]
Liabilities:
Contingent consideration	0.0	0.0
Fair Value, Measurements, Recurring [Member] | Significant Observable Inputs (Level 2) [Member] | Demand and time deposits [Member]
Assets:
Cash and cash equivalents	0.0	0.0
Fair Value, Measurements, Recurring [Member] | Significant Observable Inputs (Level 2) [Member] | Money Market Funds [Member]
Assets:
Cash and cash equivalents	0.0	0.0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Liabilities:
Contingent consideration	4.5	5.0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Demand and time deposits [Member]
Assets:
Cash and cash equivalents	0.0	0.0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Money Market Funds [Member]
Assets:
Cash and cash equivalents	0.0	0.0
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member]
Liabilities:
Contingent consideration	4.5	5.0
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Demand and time deposits [Member]
Assets:
Cash and cash equivalents	67.2	9.5
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Money Market Funds [Member]
Assets:
Cash and cash equivalents	$ 30.3	33.2
Cash Flow Hedging [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member]
Liabilities:
Derivative liabilities		0.0
Cash Flow Hedging [Member] | Fair Value, Measurements, Recurring [Member] | Significant Observable Inputs (Level 2) [Member]
Liabilities:
Derivative liabilities		0.2
Cash Flow Hedging [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Liabilities:
Derivative liabilities		0.0
Cash Flow Hedging [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member]
Liabilities:
Derivative liabilities		0.2
Foreign Exchange Contract [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member]
Liabilities:
Derivative liabilities		0.0
Foreign Exchange Contract [Member] | Fair Value, Measurements, Recurring [Member] | Significant Observable Inputs (Level 2) [Member]
Liabilities:
Derivative liabilities		0.1
Foreign Exchange Contract [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Liabilities:
Derivative liabilities		0.0
Foreign Exchange Contract [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member]
Liabilities:
Derivative liabilities		$ 0.1

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Amount of liability recognized arising from contingent consideration in a business combination.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash
-URI http://asc.fasb.org/extlink&oid=6506951

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into.

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