DEBT - Convertible Notes Narrative (Details) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Aug. 31, 2025 USD ($) day $ / shares	Oct. 31, 2024 USD ($) day $ / shares	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)
DEBT
Proceeds from issuance of convertible promissory note					$ 975,329	$ 0
Change in fair value of warrant and derivative liabilities			$ (424,642)	$ 0	(424,642)	0
Amortization of debt issuance costs, commitment fees and accretion of debt discount			6,700	200	7,900	10,900
Capitalized interest costs			1,500	0	1,500	0
Convertible Debt
DEBT
Interest expense			5,900		7,100
Capitalized interest costs			800		800
2030 Convertible Notes | Convertible Debt
DEBT
Interest rate		2.75%
Loan amount		$ 500,000
Proceeds from issuance of convertible promissory note		487,100
Issuance costs		$ 12,900
Effective interest rate of debt		3.29%
Convertible, conversion ratio		0.1179245
Conversion price (in dollars per share) | $ / shares		$ 8.48
Debt instrument, redemption price, percentage		100.00%
Strike price (in dollars per share) | $ / shares		$ 8.48
Cap price (in dollars per share) | $ / shares		$ 12.80
Cost of capped call		$ 60,000
Holder percentage of principal		25.00%
2030 Convertible Notes | Convertible Debt | Debt Conversion Terms One
DEBT
Convertible, threshold percentage of stock price trigger		130.00%
Convertible, threshold trading days | day		20
Convertible, threshold consecutive trading days | day		30
2030 Convertible Notes | Convertible Debt | Debt Conversion Terms Two
DEBT
Convertible, threshold percentage of stock price trigger		98.00%
Convertible, threshold trading days | day		5
Convertible, threshold consecutive trading days | day		10
Convertible Senior Notes Due 2030 Over Allotment Option | Convertible Debt
DEBT
Loan amount		$ 75,000
2031 Convertible Notes | Convertible Debt
DEBT
Interest rate	1.00%
Loan amount	$ 1,000,000
Proceeds from issuance of convertible promissory note	975,300
Issuance costs	$ 24,700
Effective interest rate of debt	10.87%
Convertible, conversion ratio	0.0804602
Conversion price (in dollars per share) | $ / shares	$ 12.43
Debt instrument, redemption price, percentage	100.00%
Strike price (in dollars per share) | $ / shares	$ 12.43
Cap price (in dollars per share) | $ / shares	$ 18.76
Cost of capped call	$ 100,600
Holder percentage of principal	25.00%
Derivative liability	$ 410,600
Change in fair value of warrant and derivative liabilities			100,600		100,600
Reclassified derivative liability to additional paid in capital			511,200		511,200
Amortization of debt issuance costs, commitment fees and accretion of debt discount			4,500	$ 200	11,400	$ 5,900
Interest expense			3,900		10,800
Capitalized interest costs			$ 600		$ 600
2031 Convertible Notes | Convertible Debt | Debt Conversion Terms One
DEBT
Convertible, threshold percentage of stock price trigger	130.00%
Convertible, threshold trading days | day	20
Convertible, threshold consecutive trading days | day	30
2031 Convertible Notes | Convertible Debt | Debt Conversion Terms Two
DEBT
Convertible, threshold percentage of stock price trigger	98.00%
Convertible, threshold trading days | day	5
Convertible, threshold consecutive trading days | day	10
Convertible Senior Notes Due 2031 Over Allotment Option | Convertible Debt
DEBT
Loan amount	$ 150,000