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Trade and Other Receivables
12 Months Ended
Dec. 31, 2021
Subclassifications of assets, liabilities and equities [abstract]  
Trade and Other Receivables Trade and Other Receivables
As at Dec. 3120212020
Trade accounts receivable499 488 
Collateral paid (Note 16)55 49 
Current portion of finance lease receivables (Note 8)40 36 
Loan receivable (Note 22)55 — 
Income taxes receivable2 10 
Trade and other receivables651 583