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Restructuring Costs - Schedule of Restructuring and Related Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended	15 Months Ended	24 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 27, 2025	Sep. 28, 2024	Dec. 28, 2024	Dec. 28, 2024	Sep. 27, 2025
Restructuring Cost and Reserve [Line Items]
Total cash restructuring costs	$ 9,602	$ 1,963	$ 17,406	$ 11,882	$ 14,888		$ 45,780
Asset impairments	29,552	0	30,140	2,500			35,560
Total restructuring costs	39,154	1,963	47,546	14,382		$ 33,800	81,340
Contract termination costs
Restructuring Cost and Reserve [Line Items]
Total cash restructuring costs	5,878	300	7,173	4,483			21,610
Severance and employee-related benefits
Restructuring Cost and Reserve [Line Items]
Total cash restructuring costs	2,923	1,663	9,415	2,905			17,608
Professional fees and other
Restructuring Cost and Reserve [Line Items]
Total cash restructuring costs	$ 801	$ 0	$ 818	$ 4,494			$ 6,562