Revenues - Activities and Ending Reserve Balances for Significant Categories of Discounts and Allowances (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2026	Jan. 03, 2025
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 87,643	$ 84,840
Provision related to sales made in:
Current period	899,981	712,754
Prior periods	(10,978)	(3,903)
Payments and customer credits issued	(882,527)	(706,048)
Balance at end of period	94,119	87,643
Chargebacks, Discounts for Prompt Payment and Other
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	25,267	25,221
Provision related to sales made in:
Current period	616,641	470,103
Prior periods	(4,340)	(891)
Payments and customer credits issued	(603,345)	(469,166)
Balance at end of period	34,223	25,267
Other Customer Credits/Fees and Co-pay Assistance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	24,945	19,721
Provision related to sales made in:
Current period	69,949	63,354
Prior periods	(2,109)	(2,044)
Payments and customer credits issued	(69,173)	(56,086)
Balance at end of period	23,612	24,945
Rebates
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	37,431	39,898
Provision related to sales made in:
Current period	213,391	179,297
Prior periods	(4,529)	(968)
Payments and customer credits issued	(210,009)	(180,796)
Balance at end of period	$ 36,284	$ 37,431