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Leases - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 29, 2020 | Sep. 27, 2020 | Dec. 29, 2019 | Dec. 31, 2018
Lessee, Lease, Description [Line Items] |  |  |  |
Leases, remaining lease term (years) | 15 years |  |  |
Operating lease right-of-use assets |  | $ 84.0 | $ 60.4 |
Operating lease current liabilities |  | 19.5 | 20.1 |
Operating lease noncurrent liabilities |  | 68.1 | $ 43.3 |
Operating lease, weighted average discount rate | 4.80% |  |  |
2020, remaining |  | 0.8 |  |
2021 |  | 3.3 |  |
2022 |  | 3.3 |  |
2023 |  | 3.4 |  |
2024 |  | 3.4 |  |
2025 |  | 3.4 |  |
Thereafter |  | $ 34.0 |  |
Accounting Standards Update 2016-02 |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Operating lease right-of-use assets |  |  |  | $ 74.1
Operating lease current liabilities |  |  |  | 19.8
Operating lease noncurrent liabilities |  |  |  | $ 54.3
Minimum |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Leases, remaining lease term (years) |  | 1 year |  |
Maximum |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Leases, remaining lease term (years) |  | 15 years |  |
Sale of Main Headquarters |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Operating lease right-of-use assets | $ 37.6 |  |  |
Operating lease current liabilities | 1.2 |  |  |
Operating lease noncurrent liabilities | $ 36.1 |  |  |

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- Definition Amount of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing due in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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- Definition Amount of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121602099&loc=d3e50824-112756 + Details
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