For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Revenue - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Revenue - Narrative (Details) - USD ($) $ in Millions	Sep. 27, 2024	Sep. 29, 2023	Sep. 27, 2024	Sep. 29, 2023	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 126.7		$ 126.7
Contract liability	$ 158.0		158.0		$ 114.8
Revenue recognized			$ 87.4	$ 66.4
Revenue Benchmark \| Customer Concentration Risk \| Largest customer
Disaggregation of Revenue [Line Items]
Concentration risk percentage	11.00%	13.00%	10.00%	11.00%
Clear Aligner Treatment Plans
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 93.6		$ 93.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-09-28
Disaggregation of Revenue [Line Items]
Expected timing of satisfaction	12 months		12 months