Operating (Gains), Losses and Other Charges, Net (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 23, 2020	Sep. 25, 2019	Sep. 23, 2020	Sep. 25, 2019
Other Income and Expenses [Abstract]
Gains on sales of assets and other, net	$ (1,202)	$ (51,183)	$ (2,260)	$ (87,497)
Restructuring charges and exit costs	83	1,092	2,060	2,038
Impairment charges	338	0	2,519	0
Operating (gains), losses and other charges, net	(781)	(50,091)	2,319	(85,459)
Restructuring Charges [Abstract]
Exit costs	75	20	169	194
Severance and other restructuring charges	8	1,072	1,891	1,844
Total restructuring charges and exit costs	$ 83	$ 1,092	$ 2,060	$ 2,038

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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