Information Regarding Reportable Business Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 24, 2022	Sep. 25, 2021	Sep. 24, 2022	Sep. 25, 2021	Dec. 25, 2021
Segment Reporting Information [Line Items]
External revenue	$ 1,816,132	$ 1,734,299	$ 5,761,795	$ 4,592,551
Internal revenue	12,883	9,533	65,753	53,028
Investment income	716	706	2,023	2,138
Operating income	133,498	131,412	446,749	356,928
Expenditures on long-lived assets	13,629	9,561	21,096	18,561
Goodwill	41,004	40,980	41,004	40,980	$ 40,768
Transportation Logistics
Segment Reporting Information [Line Items]
External revenue	1,796,401	1,716,004	5,702,959	4,539,561
Operating income	120,164	123,410	412,054	323,370
Expenditures on long-lived assets	13,629	9,561	21,096	18,561
Goodwill	41,004	40,980	41,004	40,980
Insurance
Segment Reporting Information [Line Items]
External revenue	19,731	18,295	58,836	52,990
Internal revenue	12,883	9,533	65,753	53,028
Investment income	716	706	2,023	2,138
Operating income	$ 13,334	$ 8,002	$ 34,695	$ 33,558