v3.25.4
Employee Benefit Plans - Summary of Major Categories of Plan Assets for Funded Plans (Detail) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of fair value of plan assets [Line Items]    
Equities $ 521 $ 523
Bonds 1,262 1,225
Derivatives (1) (1)
Cash and cash equivalents 279 237
Other 121 99
Total 2,270 2,174
Corporate Bonds [Member]    
Disclosure of fair value of plan assets [Line Items]    
Bonds 502 566
Government Bonds [Member]    
Disclosure of fair value of plan assets [Line Items]    
Bonds 462 365
Other Fixed Income [Member]    
Disclosure of fair value of plan assets [Line Items]    
Bonds 298 294
Multi-Asset [Member]    
Disclosure of fair value of plan assets [Line Items]    
Multi-asset 88 91
Quoted Plan Assets [Member]    
Disclosure of fair value of plan assets [Line Items]    
Equities 3 1
Bonds 0 0
Derivatives (2) (2)
Cash and cash equivalents 39 40
Other 6 5
Total 46 44
Quoted Plan Assets [Member] | Corporate Bonds [Member]    
Disclosure of fair value of plan assets [Line Items]    
Bonds 0 0
Quoted Plan Assets [Member] | Government Bonds [Member]    
Disclosure of fair value of plan assets [Line Items]    
Bonds 0 0
Quoted Plan Assets [Member] | Other Fixed Income [Member]    
Disclosure of fair value of plan assets [Line Items]    
Bonds 0 0
Quoted Plan Assets [Member] | Multi-Asset [Member]    
Disclosure of fair value of plan assets [Line Items]    
Multi-asset 0 0
Unquoted Plan Assets [Member]    
Disclosure of fair value of plan assets [Line Items]    
Equities 518 522
Bonds 1,262 1,225
Derivatives 1 1
Cash and cash equivalents 240 197
Other 115 94
Total 2,224 2,130
Unquoted Plan Assets [Member] | Corporate Bonds [Member]    
Disclosure of fair value of plan assets [Line Items]    
Bonds 502 566
Unquoted Plan Assets [Member] | Government Bonds [Member]    
Disclosure of fair value of plan assets [Line Items]    
Bonds 462 365
Unquoted Plan Assets [Member] | Other Fixed Income [Member]    
Disclosure of fair value of plan assets [Line Items]    
Bonds 298 294
Unquoted Plan Assets [Member] | Multi-Asset [Member]    
Disclosure of fair value of plan assets [Line Items]    
Multi-asset $ 88 $ 91