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FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS (Tables)
 6 Months Ended
Jun. 30, 2024
Fair value measurements [Abstract]  
Schedule of fair value measurements
a) Assets and Liabilities Measured at Fair Value on a Recurring Basis
As at June 30, 2024 Quoted prices in active markets for identical assets Significant other observable inputs Significant unobservable inputs Aggregate fair value
(Level 1) (Level 2) (Level 3)
Other investments1
 $102  $—  $—  $102 
Receivables from provisional copper and gold sales —  152  —  152 
$102  $152  $—  $254 
1    Includes equity investments in other mining companies.

b) Fair Values of Financial Assets and Liabilities 
   As at June 30, 2024 As at December 31, 2023
Carrying amount Estimated fair value Carrying amount Estimated fair value
Financial assets
Other assets1
 $748  $748  $807  $807 
Other investments2
 102  102  131  131 
$850  $850  $938  $938 
Financial liabilities
Debt3
 $4,724  $4,844  $4,726  $5,107 
Other liabilities 627  627  574  574 
$5,351  $5,471  $5,300  $5,681 
1Includes restricted cash and amounts due from our partners.
2Includes equity investments in other mining companies. Recorded at fair value. Quoted market prices are used to determine fair value.
3Debt is generally recorded at amortized cost. The fair value of debt is primarily determined using quoted market prices. Balance includes both current and long-term portions of debt.