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Inventories - Schedule of Inventories (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Jan. 01, 2023
[1]
Classes of current inventories [abstract]        
Direct materials $ 85 $ 70 $ 79  
Repair and distribution parts 94 115 101  
Work-in-progress 62 90 73  
Equipment 17 19 20  
Total inventories 258 294 273 $ 273
Work-in-progress related to finance leases $ 35 $ 0 $ 31  
[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.