Revenue - Summary of Net Revenue by Line of Business (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 03, 2021	Sep. 27, 2020	Oct. 03, 2021	Sep. 27, 2020
Disaggregation Of Revenue [Line Items]
Total Product Revenue	$ 507.4	$ 444.1	$ 1,494.1	$ 1,234.9
Collaborations and Other Revenue	15.1	7.0	27.8	14.7
Net Revenue	522.5	451.1	1,521.8	1,249.6
Clinical Laboratories
Disaggregation Of Revenue [Line Items]
Total Product Revenue	336.6	300.1	993.9	816.7
Transfusion Medicine
Disaggregation Of Revenue [Line Items]
Total Product Revenue	170.7	140.6	494.5	414.5
Other Product Revenue
Disaggregation Of Revenue [Line Items]
Total Product Revenue	$ 0.0	$ 3.3	$ 5.6	$ 3.7