Supplemental Financial Information - Allowance of credit losses (Details) $ in Millions	9 Months Ended
Sep. 26, 2020 USD ($)
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at December 28, 2019	$ 27.1
Provision for credit losses(1)	20.0
Amounts written off	2.3
Other, including foreign currency translation	1.0
Balance at September 26, 2020	$ 45.8

Amount of foreign currency translation gain (loss) which (increases) decreases allowance for credit loss on financing receivable.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447

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- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

+ References

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of credit loss expense (reversal of expense) for financing receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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