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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2018
Jun. 29, 2018
Document And Entity Information [Abstract]    
Entity Registrant Name Luxfer Holdings PLC  
Entity Central Index Key 0001096056  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Document Type 10-K  
Document Period End Date Dec. 31, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus FY  
Amendment Flag false  
Entity Common Stock, Shares Outstanding 27,000,498  
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Public Float   $ 464,249,275