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FAIR VALUE MEASUREMENTS - Narrative (Details) - Convertible debt investments - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2022 | Jan. 01, 2022 | Sep. 30, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Cost basis of investment | $ 223.0 | $ 194.2 | $ 222.1
Gross unrealized loss | $ (131.9) | $ (2.9) | $ (105.1)

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- Definition Amount of unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
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- Definition Cost of the investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section 50 -Paragraph 6 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=99383244&loc=d3e12121-115841 + Details
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- Details
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