v3.8.0.1
Document and Entity Information - shares
9 Months Ended
Sep. 30, 2017
Oct. 27, 2017
Document Information [Line Items]    
Entity Registrant Name Tronox Ltd  
Entity Central Index Key 0001530804  
Current Fiscal Year End Date --12-31  
Entity Well-known Seasoned Issuer Yes  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q3  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2017  
Class A Ordinary Shares [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   91,052,581
Class B Ordinary Shares [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   28,729,280