v3.26.1
Financial Instruments by Category - Summary of Company's Financial Assets Measured at Fair Value (Detail) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of detailed information about financial instruments [line items]      
Financial Assets $ 668 $ 829 $ 210
Investments in financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 262 390 114
Cash and cash equivalents [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 406 439 96
Public securities [member] | Investments in financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 250 381 114
Public securities [member] | Cash and cash equivalents [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 24 0 0
Mutual funds [member] | Cash and cash equivalents [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 382 439 96
Private Securities [Member] | Investments in financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 12 9 0
Level 1 [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 668 829 210
Level 1 [member] | Investments in financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 262 390 114
Level 1 [member] | Cash and cash equivalents [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 406 439 96
Level 1 [member] | Public securities [member] | Investments in financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 250 381 114
Level 1 [member] | Public securities [member] | Cash and cash equivalents [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 24 0 0
Level 1 [member] | Mutual funds [member] | Cash and cash equivalents [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 382 439 96
Level 1 [member] | Private Securities [Member] | Investments in financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 12 9 0
Level 2 [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 0 0 0
Level 2 [member] | Investments in financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 0 0 0
Level 2 [member] | Cash and cash equivalents [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 0 0 0
Level 2 [member] | Public securities [member] | Investments in financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 0 0 0
Level 2 [member] | Mutual funds [member] | Cash and cash equivalents [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 0 0 0
Level 2 [member] | Private Securities [Member] | Investments in financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 0 0 0
Level 3 [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 0 0 0
Level 3 [member] | Investments in financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 0 0 0
Level 3 [member] | Cash and cash equivalents [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 0 0 0
Level 3 [member] | Public securities [member] | Investments in financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 0 0 0
Level 3 [member] | Mutual funds [member] | Cash and cash equivalents [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets 0 0 0
Level 3 [member] | Private Securities [Member] | Investments in financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial Assets $ 0 $ 0 $ 0