v3.25.4
Segment Information - Summary of Operating Results of Reportable Segments (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of operating segments [Line Items]    
Revenues $ 7,476 $ 7,258
Staff costs [1] (2,590) (2,551)
Goods and services [1] (1,479) (1,469)
Other operating expenses (373) (363)
Fair value adjustments on acquired deferred revenue 20 9
Reportable segments adjusted EBITDA 3,054 2,884
Corporate costs (118) (105)
Remove fair value adjustments on acquired deferred revenue (20) (9)
Fair value adjustments (18) 17
Depreciation (111) (113)
Other operating gains, net 164 144
Operating profit 2,132 2,109
Net interest expense (143) (125)
Other finance (costs) income (55) 45
Share of post-tax (losses) earnings in equity method investments (28) 40
Tax (expense) benefit (423) 123
Earnings from continuing operations 1,483 2,192
Operating segments [member] | Legal Professionals [member]    
Disclosure of operating segments [Line Items]    
Revenues 2,868 2,922
Staff costs [1] (874) (936)
Goods and services [1] (499) (539)
Other operating expenses (139) (146)
Fair value adjustments on acquired deferred revenue   1
Reportable segments adjusted EBITDA 1,356 1,302
Operating segments [member] | Corporates [Member]    
Disclosure of operating segments [Line Items]    
Revenues 1,987 1,844
Staff costs [1] (733) (678)
Goods and services [1] (414) (396)
Other operating expenses (124) (105)
Fair value adjustments on acquired deferred revenue   6
Reportable segments adjusted EBITDA 716 671
Operating segments [member] | Tax & Accounting Professionals [member]    
Disclosure of operating segments [Line Items]    
Revenues 1,302 1,165
Staff costs [1] (359) (327)
Goods and services [1] (298) (267)
Other operating expenses (42) (44)
Fair value adjustments on acquired deferred revenue 20  
Reportable segments adjusted EBITDA 623 527
Operating segments [member] | Reuters [member]    
Disclosure of operating segments [Line Items]    
Revenues 853 832
Staff costs [1] (468) (439)
Goods and services [1] (177) (166)
Other operating expenses (34) (33)
Fair value adjustments on acquired deferred revenue   2
Reportable segments adjusted EBITDA 174 196
Operating segments [member] | Global Print [Member]    
Disclosure of operating segments [Line Items]    
Revenues 490 519
Staff costs [1] (156) (171)
Goods and services [1] (115) (125)
Other operating expenses (34) (35)
Reportable segments adjusted EBITDA 185 188
Operating segments [member] | Eliminations [member]    
Disclosure of operating segments [Line Items]    
Revenues (24) (24)
Goods and services [1] 24 24
Software [Member]    
Disclosure of operating segments [Line Items]    
Amortization (721) (618)
Other identifiable intangible assets [member]    
Disclosure of operating segments [Line Items]    
Amortization $ (98) $ (91)
[1] Refer to note 5 for components of staff costs and definition of goods and services.