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STOCK-BASED COMPENSATION - Schedule of Stock-Based Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Share-Based Compensation Expense [Line Items]
Total stock-based compensation expense	$ 10.7	$ 14.5	$ 20.2	$ 26.5
Cost of revenue
Share-Based Compensation Expense [Line Items]
Total stock-based compensation expense	0.3	0.4	0.6	0.7
Research and development expense
Share-Based Compensation Expense [Line Items]
Total stock-based compensation expense	2.0	1.6	4.1	2.8
Sales and marketing expense
Share-Based Compensation Expense [Line Items]
Total stock-based compensation expense	2.0	2.6	3.5	4.5
General and administrative expense
Share-Based Compensation Expense [Line Items]
Total stock-based compensation expense	$ 6.4	$ 9.9	$ 12.0	$ 18.5

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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Amount of noncash expense for share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

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