Financial Instruments - Notional Amount, Estimated Aggregate Fair Value and Related Balance Sheet Classification of Foreign Currency Derivative Contracts (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
Sep. 28, 2019	Dec. 31, 2018
Designated as hedging instrument \| Net investment hedges
Derivatives, Fair Value [Line Items]
Other long-term assets	$ 1.7	$ 0.0
Notional amount	$ 300.0	0.0
Designated as hedging instrument \| Net investment hedges \| Maximum
Derivatives, Fair Value [Line Items]
Outstanding maturities in months, not to exceed	60 months
Foreign currency contracts
Derivatives, Fair Value [Line Items]
Total fair value	$ 24.7	14.3
Notional amount	2,680.7	2,153.0
Foreign currency contracts \| Designated as hedging instrument \| Cash flow hedge
Derivatives, Fair Value [Line Items]
Other current assets	22.0	20.6
Other long-term assets	2.5	2.8
Other current liabilities	(5.6)	(8.4)
Other long-term liabilities	(1.7)	(2.0)
Total fair value	17.2	13.0
Notional amount	$ 1,216.5	$ 1,499.0
Foreign currency contracts \| Designated as hedging instrument \| Cash flow hedge \| Maximum
Derivatives, Fair Value [Line Items]
Outstanding maturities in months, not to exceed	24 months	24 months
Foreign currency contracts \| Not designated as hedging instrument
Derivatives, Fair Value [Line Items]
Other current assets	$ 9.2	$ 6.1
Other current liabilities	(3.4)	(4.8)
Total fair value	5.8	1.3
Notional amount	$ 1,164.2	$ 654.0
Foreign currency contracts \| Not designated as hedging instrument \| Maximum
Derivatives, Fair Value [Line Items]
Outstanding maturities in months, not to exceed	15 months	12 months

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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- Definition

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=117331979&loc=d3e41228-113958

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- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

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- Definition

Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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