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Leases - Supplemental Balance Sheet Information (Details) - USD ($) | Jun. 27, 2020 | Sep. 28, 2019
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Lessee, Lease, Description [Line Items] |  |
Finance lease liabilities (current) |  | $ 1,800,000
Finance lease liabilities (non-current) |  | $ 19,200,000
Operating Lease, Weighted Average Remaining Lease Term | 5 years 8 months 15 days |
Finance Lease, Weighted Average Remaining Lease Term | 7 years 10 months 20 days |
Operating Leases, Weighted average discount rate | 2.00% |
Financing Leases, Weighted average discount rate | 5.10% |
Other assets |  |
Lessee, Lease, Description [Line Items] |  |
Operating Leases, Lease right-of-use asset | $ 83,000.0 |
Accrued expenses |  |
Lessee, Lease, Description [Line Items] |  |
Operating lease liabilities (current) | 22,900 |
Finance lease obligations - short term |  |
Lessee, Lease, Description [Line Items] |  |
Finance lease liabilities (current) | 1,800 |
Other long-term liabilities |  |
Lessee, Lease, Description [Line Items] |  |
Operating lease liabilities (non-current) | 68,300 |
Finance lease obligations - long term |  |
Lessee, Lease, Description [Line Items] |  |
Finance lease liabilities (non-current) | $ 17,900 |

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as current. + 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 Present value of lessee's discounted obligation for lease payments from finance 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 Weighted average discount rate for finance lease calculated at point in time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(4) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 + Details
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- Definition Weighted average remaining lease term for finance 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/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. + 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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