Segments and Geographical Information - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Net revenues	$ 997,431	$ 943,147
Gross profit	697,816	660,654
Income from operations	154,135	133,516
Stock-based compensation	38,788	37,735
Depreciation and amortization	32,946	35,820
Interest income	4,392	2,337
Other income (expense), net	(141)	(1,229)
Net income before provision for income taxes	158,386	134,624
Operating Segments
Segment Reporting Information [Line Items]
Income from operations	335,931	313,097
Unallocated corporate expenses
Segment Reporting Information [Line Items]
Income from operations	(181,796)	(179,581)
Stock-based compensation	34,665	32,760
Depreciation and amortization	11,675	11,276
Clear Aligner
Segment Reporting Information [Line Items]
Net revenues	817,251	789,804
Gross profit	579,146	566,139
Clear Aligner | Operating Segments
Segment Reporting Information [Line Items]
Income from operations	286,238	277,521
Stock-based compensation	3,764	4,654
Depreciation and amortization	14,433	16,398
Systems and Services
Segment Reporting Information [Line Items]
Net revenues	180,180	153,343
Gross profit	118,670	94,515
Systems and Services | Operating Segments
Segment Reporting Information [Line Items]
Income from operations	49,693	35,576
Stock-based compensation	359	321
Depreciation and amortization	$ 6,838	$ 8,146