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Segments and Geographical Information - Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Segment Reporting Information [Line Items] |  |  |  |
Net revenues | $ 969,553 | $ 1,010,808 | $ 1,942,772 | $ 1,905,579
Gross profit | 687,559 | 758,538 | 1,396,905 | 1,435,636
Income from operations | 188,196 | 268,902 | 386,278 | 494,348
Stock-based compensation | 34,140 | 28,855 | 65,761 | 56,096
Depreciation and amortization | 30,281 | 25,892 | 59,907 | 51,527
Interest income | 245 | 383 | 922 | 2,026
Other income (expense), net | (14,832) | (483) | (26,105) | 34,049
Net income before provision for income taxes | 173,609 | 268,802 | 361,095 | 530,423
Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Income from operations | 352,808 | 412,301 | 716,326 | 786,994
Unallocated corporate expenses |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Income from operations | (164,612) | (143,399) | (330,048) | (292,646)
Stock-based compensation | 30,903 | 26,049 | 59,456 | 50,825
Depreciation and amortization | 9,476 | 9,100 | 18,413 | 19,070
Clear Aligner |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenues | 798,398 | 840,959 | 1,608,094 | 1,594,228
Gross profit | 585,245 | 646,665 | 1,190,941 | 1,231,199
Clear Aligner | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Income from operations | 307,209 | 347,626 | 619,928 | 675,091
Stock-based compensation | 3,001 | 2,632 | 5,855 | 4,926
Depreciation and amortization | 14,029 | 12,170 | 27,796 | 23,290
Systems and Services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenues | 171,155 | 169,849 | 334,678 | 311,351
Gross profit | 102,314 | 111,873 | 205,964 | 204,437
Systems and Services | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Income from operations | 45,599 | 64,675 | 96,398 | 111,903
Stock-based compensation | 236 | 174 | 450 | 345
Depreciation and amortization | $ 6,776 | $ 4,622 | $ 13,698 | $ 9,167

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