Segments and Geographical Information - Segments Information - (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Net revenues	$ 3,999,012	$ 3,862,260	$ 3,734,635
Cost of net revenues	1,199,853	1,155,397	1,100,860
Gross profit	2,799,159	2,706,863	2,633,775
Total operating expenses	2,191,531	2,063,525	1,991,180
Segment income from operations	607,628	643,338	642,595
Stock-based compensation	173,703	154,026	133,367
Depreciation and amortization	145,034	142,401	125,793
Operating Segments
Segment Reporting Information [Line Items]
Segment income from operations	1,411,426	1,373,612	1,314,185
Unallocated corporate expense
Segment Reporting Information [Line Items]
Total operating expenses	803,798	730,274	671,590
Segment income from operations	(803,798)	(730,274)	(671,590)
Stock-based compensation	149,220	138,770	117,557
Depreciation and amortization	46,586	46,102	39,605
Clear Aligner | Operating Segments
Segment Reporting Information [Line Items]
Net revenues	3,230,122	3,199,329	3,072,585
Cost of net revenues	952,136	911,291	844,415
Gross profit	2,277,986	2,288,038	2,228,170
Total operating expenses	1,135,782	1,105,781	1,093,750
Segment income from operations	1,142,204	1,182,257	1,134,420
Stock-based compensation	22,888	13,963	14,816
Depreciation and amortization	67,450	64,781	57,888
Systems and Services | Operating Segments
Segment Reporting Information [Line Items]
Net revenues	768,890	662,931	662,050
Cost of net revenues	247,717	244,106	256,445
Gross profit	521,173	418,825	405,605
Total operating expenses	251,951	227,470	225,840
Segment income from operations	269,222	191,355	179,765
Stock-based compensation	1,595	1,293	994
Depreciation and amortization	$ 30,998	$ 31,518	$ 28,300