Segment Information - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 26, 2020 USD ($) Segment Customer	Dec. 28, 2019 USD ($) Customer	Dec. 29, 2018 USD ($) Customer
Segment Reporting Information [Line Items]
External revenue | $	$ 4,132,981	$ 4,084,577	$ 4,615,144
Number of segments | Segment	2
Number of customers accounting for 10 percent or more of total revenue | Customer	0	0	0
No single customer accounted for benchmark percentage to be considered major customer	10.00%	10.00%	10.00%