Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2018
Feb. 19, 2019
Jun. 30, 2018
Document And Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2018    
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Entity Registrant Name Jazz Pharmaceuticals plc    
Entity Central Index Key 0001232524    
Trading Symbol jazz    
Entity Filer Category Large Accelerated Filer    
Current Fiscal Year End Date --12-31    
Smaller Reporting Company false    
Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding (in shares)   57,055,731  
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Well-known Seasoned Issuer Yes    
Entity Public Float     $ 7,515,311,963