Revenue - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 03, 2026	Mar. 28, 2025	Dec. 31, 2025
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 171.3
Contract liability	212.2		$ 207.2
Revenue recognized	$ 67.4	$ 44.7
Revenue Benchmark | Customer Concentration Risk | Largest customer
Disaggregation of Revenue [Line Items]
Concentration risk percentage	11.00%	10.00%
Clear Aligner Treatment Plans
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 130.8
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-04-04
Disaggregation of Revenue [Line Items]
Expected timing of satisfaction	12 months