CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Dec. 25, 2021
Total revenue	$ 4,129,409	$ 3,976,060	$ 3,540,160
Costs and expenses:
Selling, general and administrative	747,855	665,098	619,919
Amortization of intangible assets	137,440	146,578	124,857
Operating income	617,261	650,975	589,862
Other income (expense):
Interest income	5,196	780	652
Interest expense	(136,710)	(59,291)	(73,910)
Other income (expense), net	95,537	30,523	(35,894)
Income before income taxes	581,284	622,987	480,710
Provision for income taxes	100,914	130,379	81,873
Net income	480,370	492,608	398,837
Less: Net income attributable to noncontrolling interests	5,746	6,382	7,855
Net income attributable to common shareholders	$ 474,624	$ 486,226	$ 390,982
Earnings per common share
Basic (in dollars per share)	$ 9.27	$ 9.57	$ 7.77
Diluted (in dollars per share)	$ 9.22	$ 9.48	$ 7.60
Weighted-average number of common shares outstanding:
Basic (in shares)	51,227	50,812	50,293
Diluted (in shares)	51,451	51,301	51,425
Cost of services provided (excluding amortization of intangible assets)
Total revenue	$ 3,440,019	$ 3,216,904	$ 2,755,579
Costs and expenses:
Cost of services provided and products sold	2,295,983	2,143,318	1,837,487
Cost of products sold (excluding amortization of intangible assets)
Total revenue	689,390	759,156	784,581
Costs and expenses:
Cost of services provided and products sold	$ 330,870	$ 370,091	$ 368,035