v3.25.2
Document and Entity Information
Aug. 06, 2025
Cover [Abstract]  
Document Type 8-K
Document Period End Date Aug. 06, 2025
Securities Act File Number 001-36473
Entity Registrant Name Trinseo PLC
Entity Incorporation, State or Country Code L2
Entity Tax Identification Number 00-0000000
Entity Address, Address Line One 440 East Swedesford Road
Entity Address, Address Line Two Suite 301
Entity Address, City or Town Wayne
Entity Address, State or Province PA
Entity Address, Postal Zip Code 19087
City Area Code 610
Local Phone Number 240-3200
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Ordinary Shares, par value $0.01 per share
Trading Symbol TSE
Security Exchange Name NYSE
Entity Emerging Growth Company false
Entity Central Index Key 0001519061
Amendment Flag false