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Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2020	Dec. 25, 2019	Dec. 26, 2018
Statement of Comprehensive Income [Abstract]
Minimum pension liability adjustment, tax	$ (67)	$ 15	$ 53
Changes in the fair value of cash flow derivatives, tax	(12,345)	(10,410)	(339)
Reclassification of cash flow derivatives to interest expense, tax	874	75	36
Reclassification of loss related to dedesignation of derivatives to other nonoperating expense (income), tax	1,892	0	0
Amortization of unrealized losses related to dedesignated derivatives to interest expense, tax	$ 214	$ 0	$ 0

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- Definition

Other Comprehensive Income (Loss), Reclassification Of Unrealized Gains (Losses), Tax

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- Definition

Amount, before reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e640-108580

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Amount of tax expense (benefit) for reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan.

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