Fair Value Measurements (Financial Assets and Liabilities Carried at Fair Value) (Details) - USD ($) $ in Millions	Mar. 29, 2019	Dec. 31, 2018
Assets:
Available-for-sale debt securities	$ 36.8	$ 38.3
Investment in equity securities	193.1	148.9
Cross-currency swap derivative contracts	17.1
Liabilities:
Cross-currency swap derivative contracts	2.3
Deferred compensation plans	66.3	60.9
Quoted Prices in Active Market (Level 1)
Assets:
Available-for-sale debt securities	0.0	0.0
Investment in equity securities	0.0	0.0
Cross-currency swap derivative contracts	0.0
Liabilities:
Cross-currency swap derivative contracts	0.0
Deferred compensation plans	0.0	0.0
Significant Other Observable Inputs (Level 2)
Assets:
Available-for-sale debt securities	36.8	38.3
Investment in equity securities	0.0	0.0
Cross-currency swap derivative contracts	17.1
Liabilities:
Cross-currency swap derivative contracts	2.3
Deferred compensation plans	66.3	60.9
Significant Unobservable Inputs (Level 3)
Assets:
Available-for-sale debt securities	0.0	0.0
Investment in equity securities	193.1	148.9
Cross-currency swap derivative contracts	0.0
Liabilities:
Cross-currency swap derivative contracts	0.0
Deferred compensation plans	$ 0.0	$ 0.0

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer).

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740

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Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps.

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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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