Debt Conversion, Shares Issuable Upon Conversion

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- Definition

Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
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-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959

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- Definition

Decrease in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 15
-URI http://asc.fasb.org/subtopic&trid=2229187

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- Definition

Amount of investment in equity security without readily determinable fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714

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- Definition

Amount of cumulative loss from downward price adjustment on investment in equity security without readily determinable fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714

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- Definition

Amount of impairment loss on investment in equity security without readily determinable fair value.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714

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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

No definition available.

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FINANCIAL INSTRUMENTS - Narrative (Details) - USD ($) shares in Millions		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 22, 2021	Dec. 31, 2020
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Carrying value of investments in equity securities without readily determinable fair value	$ 14,200,000	$ 14,200,000			$ 14,200,000
Gross unrealized losses of downward adjustments to the carrying value of equity securities without readily determinable fair values	$ 2,100,000	2,100,000
Impairment charge on equity securities without readily determinable fair value		$ 0	$ 0
2022 Exchangeable Notes \| Senior Notes
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Debt conversion, shares issuable upon conversion (in shares)	5.5	5.5
Corresponding loss on embedded derivative	$ 38,600,000
2022 Exchangeable Notes \| Senior Notes \| Accrued expenses and other current liabilities
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Fair value of embedded derivative liability	$ 38,600,000	$ 38,600,000		$ 0