Acquisitions (Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Thousands		9 Months Ended
	Mar. 31, 2023	Sep. 27, 2025	Sep. 28, 2024	Dec. 28, 2024	Mar. 30, 2024
Business Combination [Line Items]
Goodwill		$ 2,499,229		$ 2,322,593
Cash paid for acquisition, net of cash acquired		$ 0	$ 116,712
Gelnex
Business Combination [Line Items]
Accounts receivable	$ 81,025
Inventories	140,865
Other current assets	3,143
Property, plant and equipment	169,205
Identifiable intangible assets	339,500
Goodwill	542,572
Operating lease right-of-use assets	134
Other assets	2,703
Deferred tax asset	9,067				$ 8,100
Accounts payable	(15,059)
Current operating lease liabilities	(26)
Current portion of long-term debt	(44,692)
Accrued expenses	(18,826)
Long-term debt, net of current portion	(1,407)
Long-term operating lease liabilities	(123)
Deferred tax liability	(12,870)
Other noncurrent liabilities	(19)
Purchase price, net of cash acquired	1,195,192
Less hold-back	104,145
Cash paid for acquisition, net of cash acquired	$ 1,091,047