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Financial Instruments - Summary of maturity analysis for financial assets held for managing liquidity risk (Detail) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Jan. 01, 2023
 [1]
Dec. 31, 2022
Disclosure of detailed information about financial instruments [abstract]        
Cash and cash equivalents $ 92 $ 95 $ 187 $ 187
RCF 800      
Less: Drawings on RCF (191)      
Less: Letters of Credit (87)      
Net RCF 522      
Available for future drawings $ 614      
[1] Effective January 1, 2024, the Company changed its presentation currency from Canadian dollars to United States dollars. Refer to Note 4 “Changes in Accounting Policies” for further details.