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Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions | 12 Months Ended
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Sep. 28, 2018 | Sep. 29, 2017 | Sep. 30, 2016
Accounting Policies [Line Items] |  |  |
Weeks in fiscal year | 364 days | 364 days | 364 days
Maturity number of days | 90 days |  |
Capital Expenditures Incurred but Not yet Paid | $ 94.1 |  |
Minimum Useful Life [Member] | Building and Building Improvements [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Property, plant and equipment, useful life | 5 years |  |
Maximum Useful Life [Member] | Building and Building Improvements [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Property, plant and equipment, useful life | 30 years |  |
Minimum Useful Life [Member] | Machinery and Equipment [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Property, plant and equipment, useful life | 3 years |  |
Maximum Useful Life [Member] | Machinery and Equipment [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Property, plant and equipment, useful life | 10 years |  |
Allowance for Sales Returns [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Sales Returns and Allowances, Goods | $ 32.2 | $ 14.7 |

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- Definition Future cash outflow to pay for purchases of fixed assets that have occurred. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 + Details
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- Definition Duration of a fiscal period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter. + References No definition available. + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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