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Cash and cash equivalents
 12 Months Ended
Dec. 31, 2024
Accounting Standards, Amendments and Interpretations Issued but not yet Applied [Abstract]  
Cash and cash equivalents Cash and cash equivalents
Accounting policies
Cash and cash equivalents consist of cash on deposit and short‑term interest-bearing securities maturing within three months of the date of purchase.
Supporting information
December 31,December 31,
As at20242023
Cash$389 $513 
Cash equivalents
252 387 
$641 $900