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Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance $ (898)  
Net unrealized gain (102) $ 94
Ending Balance (1,584) (898)
Accumulated Translation Adjustment [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (836) (1,018)
Net unrealized gain (loss) (539) 183
Repurchase of shares under Normal Course Issuer Bids [note 20] 7 (1)
Ending Balance (1,368) (836)
Accumulated Net (Loss) Gain from Designated or Qualifying Cash Flow Hedges [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance 43 5
Net unrealized gain (102) 94
Reclassifications to net income (54) (56)
Ending Balance (113) 43
Accumulated Net Unrealized Loss On Other Long Term Liabilities [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (105) (101)
Revaluation 1 0
Net unrealized (loss) gains 0 (5)
Reclassifications to net income 1 1
Ending Balance (103) (105)
AOCL [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (898)  
Ending Balance $ (1,584) $ (898)