CONSOLIDATED FINANCIAL STATEMENT DETAILS - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Loss related to legal settlement	$ 441,000,000	$ 441,000,000
Loss on embedded derivative		14,600,000
Inducement expense from Repurchase Agreement		5,200,000
Foreign currency exchange (losses) gains, net		(1,800,000)	$ (600,000)	$ (900,000)
Gain on net settlement of bond hedge and warrants		2,400,000
Litigation settlement			35,000,000
Interest income			2,700,000	4,400,000
Loss on extinguishment of debt			16,500,000
Fair value adjustment of equity instrument			3,400,000	1,700,000
Other than temporary impairment charge		$ 0	$ 0	$ 4,000,000