v3.26.1
FINANCIAL INSTRUMENTS - Schedule of Cash, Cash Equivalents, Restricted Cash Equivalents and Available-for-Sale Securities by Significant Investment Category (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Mar. 31, 2026
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost $ 2,047,956 $ 3,072,435
Gross Unrealized Gains 4,903 0
Gross Unrealized Losses (8) 0
Aggregate Fair Value 2,052,851 3,072,435
Cash and Cash Equivalents    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value 1,311,679 2,222,435
Restricted Cash Equivalents    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value   850,000
Short-term Marketable Securities    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value 248,930  
Long-term Marketable Securities    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value $ 492,242  
Maximum    
Schedule of Available-for-sale Securities [Line Items]    
Short term marketable securities maturity period 1 year  
Long term marketable securities maturity period 5 years  
Minimum    
Schedule of Available-for-sale Securities [Line Items]    
Long term marketable securities maturity period 1 year  
Level 1:    
Schedule of Available-for-sale Securities [Line Items]    
Cash $ 415,760 352,248
Cash, aggregate fair value 415,760 352,248
Level 1: | Cash and Cash Equivalents    
Schedule of Available-for-sale Securities [Line Items]    
Cash, aggregate fair value 415,760 352,248
Level 1: | Restricted Cash Equivalents    
Schedule of Available-for-sale Securities [Line Items]    
Cash, aggregate fair value   0
Level 1: | Short-term Marketable Securities    
Schedule of Available-for-sale Securities [Line Items]    
Cash, aggregate fair value 0  
Level 1: | Long-term Marketable Securities    
Schedule of Available-for-sale Securities [Line Items]    
Cash, aggregate fair value 0  
Level 2:    
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost 1,632,196  
Gross Unrealized Gains 4,903  
Gross Unrealized Losses (8)  
Aggregate Fair Value 1,637,091  
Level 2: | Cash and Cash Equivalents    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value 895,919  
Level 2: | Short-term Marketable Securities    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value 248,930  
Level 2: | Long-term Marketable Securities    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value 492,242  
Level 2: | Money market instruments    
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost 895,919 2,720,187
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Aggregate Fair Value 895,919 2,720,187
Level 2: | Money market instruments | Cash and Cash Equivalents    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value 895,919 1,870,187
Level 2: | Money market instruments | Restricted Cash Equivalents    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value   $ 850,000
Level 2: | Money market instruments | Short-term Marketable Securities    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value 0  
Level 2: | Money market instruments | Long-term Marketable Securities    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value 0  
Level 2: | Corporate debt securities    
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost 472,572  
Gross Unrealized Gains 3,286  
Gross Unrealized Losses (3)  
Aggregate Fair Value 475,855  
Level 2: | Corporate debt securities | Cash and Cash Equivalents    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value 0  
Level 2: | Corporate debt securities | Short-term Marketable Securities    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value 189,566  
Level 2: | Corporate debt securities | Long-term Marketable Securities    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value 286,289  
Level 2: | U.S. government agency securities    
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost 206,018  
Gross Unrealized Gains 1,197  
Gross Unrealized Losses (1)  
Aggregate Fair Value 207,214  
Level 2: | U.S. government agency securities | Cash and Cash Equivalents    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value 0  
Level 2: | U.S. government agency securities | Short-term Marketable Securities    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value 59,115  
Level 2: | U.S. government agency securities | Long-term Marketable Securities    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value 148,099  
Level 2: | Asset-backed securities    
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost 57,687  
Gross Unrealized Gains 420  
Gross Unrealized Losses (4)  
Aggregate Fair Value 58,103  
Level 2: | Asset-backed securities | Cash and Cash Equivalents    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value 0  
Level 2: | Asset-backed securities | Short-term Marketable Securities    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value 249  
Level 2: | Asset-backed securities | Long-term Marketable Securities    
Schedule of Available-for-sale Securities [Line Items]    
Aggregate Fair Value $ 57,854