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INCOME TAXES - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Tax [Line Items]      
Unrecognized tax benefits including interest and penalties $ 71    
Portion of unrecognized tax benefits, if recognized, would affect the Company's effective tax rate 62    
Accrued interest and penalties related to unrecognized tax benefits 12 $ 9  
Net increase (decrease) recognized in interest and penalties 3 $ 0 $ 0
Canadian Federal and Provincial      
Income Tax [Line Items]      
Increase in valuation allowance 33    
United States - Federal      
Income Tax [Line Items]      
Accumulated losses available for federal and provincial purposes 54    
Unclaimed investment tax credits and research and development credits 11    
Ireland | Revenue Commissioners, Ireland      
Income Tax [Line Items]      
Accumulated losses available for federal and provincial purposes $ 6,401