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Summary of Significant Accounting Policies Summary of Significant Accounting Policies - Useful Life (Details)	6 Months Ended
	Jun. 27, 2020
Buildings
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	39 years
Demonstration units
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Tooling
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Vehicles
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Minimum | Aircraft and components
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	4 years
Minimum | Building improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	7 years
Minimum | Computer equipment and software
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	2 years
Minimum | Furniture and office equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	2 years
Minimum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Maximum | Aircraft and components
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	20 years
Maximum | Building improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	15 years
Maximum | Computer equipment and software
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	12 years
Maximum | Furniture and office equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	6 years
Maximum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years

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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.

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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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