v3.26.1
Share-Based Compensation (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total share-based compensation expense, pre-tax $ 73.3 $ 64.5 $ 147.8 $ 132.2
Income tax benefit from share-based compensation expense (19.0) (12.3) (48.8) (21.9)
Total share-based compensation expense, net of tax 54.3 52.2 99.0 110.3
Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total share-based compensation expense, pre-tax 22.6 20.6 46.3 41.6
Income Statement Location [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total share-based compensation expense, pre-tax 46.0 41.0 90.2 82.7
Income Statement Location [Axis]: jazz:CostOfProductSalesExcludingAmortizationOfAcquiredDevelopedTechnologyAndIntangibleAssetImpairment        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total share-based compensation expense, pre-tax $ 4.7 $ 2.9 $ 11.3 $ 7.9