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Summary of Significant Accounting policies - Schedule of Estimated Useful Life (Detail)	12 Months Ended
	Sep. 27, 2019
Minimum | Buildings & Improvements
Property Plant And Equipment Estimated Useful Lives [Line Items]
Estimated Useful Life (In Years)	20 years
Minimum | Capital lease assets
Property Plant And Equipment Estimated Useful Lives [Line Items]
Estimated Useful Life (In Years)	5 years
Minimum | Machinery and equipment
Property Plant And Equipment Estimated Useful Lives [Line Items]
Estimated Useful Life (In Years)	2 years
Minimum | Computer equipment and software
Property Plant And Equipment Estimated Useful Lives [Line Items]
Estimated Useful Life (In Years)	2 years
Minimum | Furniture and fixtures
Property Plant And Equipment Estimated Useful Lives [Line Items]
Estimated Useful Life (In Years)	7 years
Maximum | Buildings & Improvements
Property Plant And Equipment Estimated Useful Lives [Line Items]
Estimated Useful Life (In Years)	40 years
Maximum | Capital lease assets
Property Plant And Equipment Estimated Useful Lives [Line Items]
Estimated Useful Life (In Years)	20 years
Maximum | Machinery and equipment
Property Plant And Equipment Estimated Useful Lives [Line Items]
Estimated Useful Life (In Years)	7 years
Maximum | Computer equipment and software
Property Plant And Equipment Estimated Useful Lives [Line Items]
Estimated Useful Life (In Years)	5 years
Maximum | Furniture and fixtures
Property Plant And Equipment Estimated Useful Lives [Line Items]
Estimated Useful Life (In Years)	10 years

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- Definition

Property Plant And Equipment Estimated Useful Lives [Line Items]

+ 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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