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Debt (Narrative) (Detail) € in Millions, $ in Millions | Sep. 27, 2019 USD ($) loan | Sep. 27, 2019 EUR (€) loan | May 15, 2018 USD ($)
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Uncommitted Revolving Credit Facilities $75 million [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Line of Credit Facility, Current Borrowing Capacity | $ 75.0 |  |
Number Of Revolving Loan Facilities | loan | 2 | 2 |
Uncommitted Revolving Credit Facilities 100 million euros [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Line of Credit Facility, Current Borrowing Capacity | € |  | € 100.0 |
Number Of Revolving Loan Facilities | loan | 1 | 1 |
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility | Unsecured Debt [Member] | 2018 Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
Line of Credit Facility, Current Borrowing Capacity |  |  | $ 1,750.0
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility, due May 2023 [Member] | Unsecured Debt [Member] | 2018 Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
Line of Credit Facility, Current Borrowing Capacity |  |  | 1,250.0
JPMorgan Chase Bank, N.A. [Member] | Delayed Draw Term Loan [Member] | Unsecured Debt [Member] | 2018 Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
Line of Credit Facility, Current Borrowing Capacity |  |  | 500.0
JPMorgan Chase Bank, N.A. [Member] | Additional Loan Facility [Member] | Unsecured Debt [Member] | 2018 Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
Line of Credit Facility, Current Borrowing Capacity |  |  | $ 500.0

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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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