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Income Taxes - Components of Company's Deferred Tax Assets (Liabilities) (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Deferred tax assets:    
Net operating loss carryforwards $ 23.4 $ 91.4
Tax credits 56.6 54.1
Capitalized research and development expenditures 78.8 53.3
Accrued expenses 34.4 25.1
Amortization of debt discount 4.2 7.8
Inventory capitalization 8.2 6.5
Intangible assets 6.4 8.0
Incentive compensation 14.7 13.5
Stock-based compensation 10.2 8.0
Other 7.1 5.4
Total deferred tax assets 244.0 273.1
Deferred tax liabilities:    
Prepaid assets (9.3) (7.7)
Property, plant and equipment (47.4) (38.1)
Capitalized contract acquisition costs (13.1) (10.4)
Unrealized gains on cash flow hedges (1.2) (5.1)
Other (7.4) (7.7)
Total deferred tax liabilities (78.4) (69.0)
Net deferred tax asset before valuation allowance 165.6 204.1
Valuation allowance (23.9) (202.9)
Net deferred tax asset $ 141.7 $ 1.2