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Updates to Significant Accounting Policies - Impact On Financial Statements Narratives (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Mar. 29, 2019
--- | --- | ---
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Operating Lease, Right-of-Use Asset |  | $ 121.1
Operating lease liabilities |  | $ 95.1
Accounting Standards Update 2016-02 [Member] |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
New Accounting Pronouncement, Effect of Adoption on Financial Statements | $ 0.0 |
Operating Lease, Right-of-Use Asset | 123.5 |
Operating lease liabilities | 126.1 |
Accounting Standards Update 2016-02 [Member] | Operating Income (Loss) [Member] |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
New Accounting Pronouncement, Effect of Adoption on Financial Statements | $ 0.0 |
Minimum |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Lessee, Operating Lease, Remaining Lease Term |  | 1 year
Minimum | Accounting Standards Update 2016-02 [Member] |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Lessee, Operating Lease, Remaining Lease Term | 1 year |

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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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