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Investments (Tables)
 12 Months Ended
Dec. 31, 2021
Interests In Other Entities [Abstract]  
Investments in joint ventures and associates The change in investments is as follows:
SkookumchuckEMGTotal
Balance, Dec. 31, 2019— — — 
Contributions86 16 102 
Equity income 1 — 1 
Change in foreign exchange rates(2)(1)(3)
Balance, Dec. 31, 202085 15 100 
Equity income 12 (3)9 
Distributions received(4)— (4)
Balance, Dec. 31, 202193 12 105 
Summarized financial information on the results of operations relating to the Company’s pro-rata interests in Skookumchuck and EMG is as follows:
Year ended Dec. 3120212020
Results of operations
Revenues19 3 
Expenses(10)(2)
Proportionate share of net earnings9 1