Segments and Geographical Information - Summarized Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Net revenues	$ 1,012,449	$ 1,028,490	$ 1,991,711	$ 2,025,921
Cost of net revenues	304,332	305,862	603,486	605,477
Gross profit	708,117	722,628	1,388,225	1,420,444
Operating expenses	545,084	575,582	1,094,092	1,119,263
Segment income from operations	163,033	147,046	294,133	301,181
Operating Segments
Segment Reporting Information [Line Items]
Segment income from operations	352,748	370,416	671,435	706,347
Unallocated corporate expenses
Segment Reporting Information [Line Items]
Operating expenses	189,715	223,370	377,302	405,166
Segment income from operations	(189,715)	(223,370)	(377,302)	(405,166)
Clear Aligner | Operating Segments
Segment Reporting Information [Line Items]
Net revenues	804,617	831,738	1,601,460	1,648,989
Cost of net revenues	240,811	243,201	475,565	481,306
Gross profit	563,806	588,537	1,125,895	1,167,683
Operating expenses	296,795	288,911	598,660	581,819
Segment income from operations	267,011	299,626	527,235	585,864
Systems and Services | Operating Segments
Segment Reporting Information [Line Items]
Net revenues	207,832	196,752	390,251	376,932
Cost of net revenues	63,521	62,661	127,921	124,171
Gross profit	144,311	134,091	262,330	252,761
Operating expenses	58,574	63,301	118,130	132,278
Segment income from operations	$ 85,737	$ 70,790	$ 144,200	$ 120,483