v3.25.4
Property and Equipment - Summary of Property and Equipment (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about property, plant and equipment [Line Items]    
Beginning balance $ 386  
Ending balance 361 $ 386
Gross Carrying Amount [Member]    
Disclosure of detailed information about property, plant and equipment [Line Items]    
Beginning balance 1,032 1,296
Capital expenditures 23 38
Leases 52 52
Acquisitions 1 8
Removed from service (135) (27)
Disposals of businesses and property   (278)
Translation and other, net (1) (57)
Ending balance 972 1,032
Accumulated Depreciation [Member]    
Disclosure of detailed information about property, plant and equipment [Line Items]    
Beginning balance (646) (849)
Depreciation (111) (113)
Removed from service 135 27
Disposals of businesses and property   242
Translation and other, net 11 47
Ending balance (611) (646)
Land, Buildings and Building Improvements [Member]    
Disclosure of detailed information about property, plant and equipment [Line Items]    
Beginning balance 270  
Ending balance 262 270
Land, Buildings and Building Improvements [Member] | Gross Carrying Amount [Member]    
Disclosure of detailed information about property, plant and equipment [Line Items]    
Beginning balance 620 801
Capital expenditures 7 9
Leases 38 30
Acquisitions 1 7
Removed from service (59) (2)
Disposals of businesses and property   (196)
Translation and other, net (1) (29)
Ending balance 606 620
Land, Buildings and Building Improvements [Member] | Accumulated Depreciation [Member]    
Disclosure of detailed information about property, plant and equipment [Line Items]    
Beginning balance (350) (475)
Depreciation (61) (61)
Removed from service 59 2
Disposals of businesses and property   161
Translation and other, net 8 23
Ending balance (344) (350)
Computer Equipment [Member]    
Disclosure of detailed information about property, plant and equipment [Line Items]    
Beginning balance 52  
Ending balance 44 52
Computer Equipment [Member] | Gross Carrying Amount [Member]    
Disclosure of detailed information about property, plant and equipment [Line Items]    
Beginning balance 217 228
Capital expenditures 11 14
Leases 13 20
Acquisitions 0 1
Removed from service (58) (24)
Disposals of businesses and property   0
Translation and other, net (5) (22)
Ending balance 178 217
Computer Equipment [Member] | Accumulated Depreciation [Member]    
Disclosure of detailed information about property, plant and equipment [Line Items]    
Beginning balance (165) (173)
Depreciation (34) (35)
Removed from service 58 24
Disposals of businesses and property   0
Translation and other, net 7 19
Ending balance (134) (165)
Furniture, Fixtures and Other Equipment [Member]    
Disclosure of detailed information about property, plant and equipment [Line Items]    
Beginning balance 64  
Ending balance 55 64
Furniture, Fixtures and Other Equipment [Member] | Gross Carrying Amount [Member]    
Disclosure of detailed information about property, plant and equipment [Line Items]    
Beginning balance 195 267
Capital expenditures 5 15
Leases 1 2
Acquisitions 0 0
Removed from service (18) (1)
Disposals of businesses and property   (82)
Translation and other, net 5 (6)
Ending balance 188 195
Furniture, Fixtures and Other Equipment [Member] | Accumulated Depreciation [Member]    
Disclosure of detailed information about property, plant and equipment [Line Items]    
Beginning balance (131) (201)
Depreciation (16) (17)
Removed from service 18 1
Disposals of businesses and property   81
Translation and other, net (4) 5
Ending balance $ (133) $ (131)