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Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2025
Jan. 30, 2026
Jun. 30, 2025
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 1-35573    
Entity Registrant Name TRONOX HOLDINGS PLC    
Entity Incorporation, State or Country Code X0    
Entity Tax Identification Number 98-1467236    
Entity Address, Address Line One 263 Tresser Boulevard    
Entity Address, Address Line Two Suite 1100    
Entity Address, City or Town Stamford    
Entity Address, State or Province CT    
Entity Address, Postal Zip Code 06901    
City Area Code 203    
Local Phone Number 705-3800    
Title of 12(b) Security Ordinary Shares, par value $0.01 per share    
Security Exchange Name NYSE    
Trading Symbol TROX    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 613,189,299
Entity Common Stock, Shares Outstanding   158,557,858  
Documents Incorporated by Reference Portions of the registrant’s proxy statement for its 2026 annual general meeting of shareholders are incorporated by reference in this Form 10-K in response to Part III Items 10, 11, 12, 13 and 14.    
Entity Central Index Key 0001530804    
Amendment Flag false    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY