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INCOME TAXES - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets $ 1,691 $ 910
Unrecognized deductible temporary differences, unused tax losses, and unused tax credits 402 822
Operating loss subject to future amortization 178  
Deductible temporary differences for which no deferred tax liability is recognised 4,000 10,000
Increase Decrease Through Business Combinations And Dispositions Deferred Tax Liability Asset 143 85
Deferred tax (liabilities)    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Increase Decrease Through Business Combinations And Dispositions Deferred Tax Liability Asset 143 85
Canada | Non-capital losses    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 102 95
Canada | Capital losses    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 32 34
United States | Net operating losses    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 570 352
Unrecognized deductible temporary differences, unused tax losses, and unused tax credits 24 34
United States | Non-capital losses    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 758 203
United States | Capital losses    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 758 203
Unrecognized deductible temporary differences, unused tax losses, and unused tax credits 0 275
Foreign countries | Net operating losses    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Unrecognized deductible temporary differences, unused tax losses, and unused tax credits 341 513
Foreign countries | Non-capital losses    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets $ 142 $ 118