Revenues - Contract Assets and Liabilities Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2026	Jan. 03, 2025	Dec. 29, 2023
Disaggregation of Revenue [Line Items]
Contract revenue recognized, including revenue from deferred revenue beginning balance	$ 6.1	$ 6.0	$ 6.9
Ispen, Takeda, Daiichi Sankyo And Genentech Collaborations
Disaggregation of Revenue [Line Items]
Revenues recognized for performance obligations satisfied in previous periods	213.1	$ 351.9	$ 179.7
Ispen And Takeda Collaborations
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 21.5