v3.25.4
NET PRODUCT REVENUES - Schedule of Balances and Activity in Each Product Revenue Allowance and Reserve Category (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Movement in Valuation Allowances and Reserves [Roll Forward]    
Beginning balance $ 361,816 $ 345,941
Provision related to current period sales 869,767 414,096
Provision related to prior period sales (48,816)  
Credit or payments made during the period for current year sales (540,235) (229,749)
Credit or payments made during the period for prior year sales (216,882) (168,472)
Ending balance 425,650 361,816
Chargebacks and Rebates    
Movement in Valuation Allowances and Reserves [Roll Forward]    
Beginning balance 350,908 325,672
Provision related to current period sales 779,332 382,892
Provision related to prior period sales (48,816)  
Credit or payments made during the period for current year sales (474,781) (194,973)
Credit or payments made during the period for prior year sales (206,790) (162,683)
Ending balance 399,853 350,908
Other Incentives and Allowances    
Movement in Valuation Allowances and Reserves [Roll Forward]    
Beginning balance 10,908 20,269
Provision related to current period sales 90,435 31,204
Provision related to prior period sales 0  
Credit or payments made during the period for current year sales (65,454) (34,776)
Credit or payments made during the period for prior year sales (10,092) (5,789)
Ending balance $ 25,797 $ 10,908