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Lease Disclosures - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 16, 2019	Jun. 17, 2018	Jun. 16, 2019	Jun. 17, 2018	Dec. 30, 2018
Rent Expenses	$ 15.9	$ 15.2	$ 32.3	$ 30.6
Finance Lease				$ 2.6
Potential future payments	18.2		18.2		$ 2.4
Operating Lease [Member]
Future minimum rental commitments	$ 36.4		$ 36.4
Lease Term	15 years		15 years
Finance Lease [Member]
Future minimum rental commitments	$ 28.7		$ 28.7
Lease Term	15 years		15 years

X

- Definition

The increase during the period in capital lease obligations due to entering into new capital leases.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
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+ Details

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X

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

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-Section 50
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X

- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

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X

- Definition

Term of lessee's operating 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/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
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X

- Definition

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

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