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Revenue - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2026	Jun. 27, 2025	Jul. 03, 2026	Jun. 27, 2025	Dec. 31, 2025
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 177.4		$ 177.4		$ 163.5
Contract liability	$ 215.0		215.0		207.2
Revenue recognized			$ 126.8	$ 88.6
Revenue Benchmark | Customer Concentration Risk | Largest customer
Disaggregation of Revenue [Line Items]
Concentration risk percentage	13.00%	11.00%	13.00%	11.00%
Clear Aligner Treatment Plans
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 134.9		$ 134.9		$ 128.0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-07-04
Disaggregation of Revenue [Line Items]
Expected timing of satisfaction	12 months		12 months

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