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Summary of Significant Accounting Policies, Derivatives (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 25, 2018	Dec. 26, 2017	Dec. 27, 2016
Derivative Instruments and Hedging Activities
Amount of hedge ineffectiveness	$ 0.0	$ 0.0	$ 0.0

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- References

No definition available.

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- Definition

The net gain (loss) recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959

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