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STOCK INCENTIVE PLANS - RSU Narratives (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Nov. 30, 2021 | Sep. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Nov. 09, 2021 | Apr. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |
Shares authorized (shares) |  |  |  |  |  | 25,204,250
The 2019 Option Plan | Common Class A |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |
Shares authorized (shares) |  |  |  |  | 16,856,770 |
The 2019 Option Plan | Common Stock, LT50 |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |
Shares authorized (shares) |  |  |  |  | 16,856,770 |
Restricted stock units |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |
Grant (shares) | 5,666,260 |  |  |  |  |
Vesting period (years) |  |  | 8 years |  |  |
Share-based compensation expense not yet recognized |  |  | $ 282.0 |  |  |
Share-based compensation not yet recognized, recognition period (years) |  |  | 6 years 11 months 1 day |  |  |
Restricted stock units | Common Class A |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |
Grant (shares) | 2,833,130 |  | 4,351,040 |  |  |
Restricted stock units | Common Stock, LT50 |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |
Grant (shares) | 2,833,130 |  | 4,323,260 |  |  |
Restricted stock units | The 2019 Option Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |
Shares authorized (shares) |  | 8,679,380 |  |  |  |
Grant (shares) |  | 2,980,260 |  | 0 |  |
Restricted stock units | The 2019 Option Plan | Common Class A |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |
Shares authorized (shares) |  | 4,339,690 |  |  |  |
Grant (shares) |  | 1,490,130 |  |  |  |
Restricted stock units | The 2019 Option Plan | Common Stock, LT50 |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |
Shares authorized (shares) |  | 4,339,690 |  |  |  |
Restricted stock units | 2021 Incentive Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |
Grant (shares) | 27,780 |  |  | 0 |  |
Vesting period (years) | 3 years |  |  |  |  |

X
- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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