Cover Page
 12 Months Ended
Dec. 31, 2021
shares
Document Information [Line Items]  
Document Type 40-F
Amendment Flag false
Document Period End Date Dec. 31, 2021
Document Fiscal Year Focus 2021
Document Fiscal Period Focus FY
Entity Registrant Name THOMSON REUTERS CORPORATION
Entity Central Index Key 0001075124
Current Fiscal Year End Date --12-31
Entity Current Reporting Status Yes
Entity Emerging Growth Company false
Entity Address, State or Province ON
Entity Incorporation, State or Country Code A6
Entity Interactive Data Current Yes
Entity Common Stock, Shares Outstanding 486,092,864
ICFR Auditor Attestation Flag true
Title of 12(b) Security Common shares
Security Exchange Name NYSE
Trading Symbol TRI
Entity File Number 1-31349
Entity Address, Address Line One 333 Bay Street, Suite 300
Entity Address, City or Town Toronto
Entity Address, Postal Zip Code M5H 2R2
City Area Code 647
Local Phone Number 480-7000
Document Annual Report true
Annual Information Form true
Audited Annual Financial Statements true
Document Registration Statement false
Auditor Name PricewaterhouseCoopers LLP
Auditor Firm ID 238
Auditor Location NY
Entity Tax Identification Number 98-0176673
Entity Primary SIC Number 2741
Business Contact [Member]  
Document Information [Line Items]  
Entity Address, State or Province NY
Entity Address, Address Line One Attn: Legal Department
Entity Address, Address Line Two 3 Times Square
Entity Address, City or Town New York
Entity Address, Postal Zip Code 10036
City Area Code 646
Local Phone Number 540-3000
Contact Personnel Name Thomson Reuters Holdings Inc.