Fair Value Measurements (Carrying Amounts and Fair Values of Financial Instruments) (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
Carrying Amount
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	0.0
Liabilities:
Cross-currency swap derivative contracts	2.3	0.0
Notes payable and current portion of long-term debt	36.6	51.8
Long-term debt	9,458.2	9,688.5
Fair Value
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	0.0
Liabilities:
Cross-currency swap derivative contracts	2.3	0.0
Notes payable and current portion of long-term debt	36.6	51.8
Long-term debt	$ 9,848.5	$ 9,990.6

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

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)
-URI http://asc.fasb.org/extlink&oid=109979856&loc=d3e26610-111562

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563

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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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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

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