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Summary of Significant Accounting Policies - Useful Life (Details) $ in Millions | 12 Months Ended
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Dec. 29, 2018 USD ($)
Minimum |
Property, Plant and Equipment [Line Items] |
Retained Earnings, Cumulative Effect, Full Retrospective Method | $ 16.0
Maximum |
Property, Plant and Equipment [Line Items] |
Retained Earnings, Cumulative Effect, Full Retrospective Method | $ 26.0
Air Transportation Equipment | Minimum |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life | 10 years
Air Transportation Equipment | Maximum |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life | 20 years
Buildings |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life | 39 years
Building and land improvements | Minimum |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life | 7 years
Building and land improvements | Maximum |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life | 15 years
Computer equipment | Minimum |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life | 2 years
Computer equipment | Maximum |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life | 6 years
Demonstration units |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life | 3 years
Furniture and office equipment | Minimum |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life | 2 years
Furniture and office equipment | Maximum |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life | 6 years
Machinery and equipment | Minimum |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life | 5 years
Machinery and equipment | Maximum |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life | 10 years
Tooling |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life | 3 years
Vehicles |
Property, Plant and Equipment [Line Items] |
Property and equipment, useful life | 5 years

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- Definition Retained Earnings, Cumulative Effect, Full Retrospective Method + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + 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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- Details
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- Details
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- Details
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