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Provisions (Tables)
12 Months Ended
Dec. 31, 2021
Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]  
Disclosure of other provisions
FOR THE YEAR ENDED DECEMBER 31 NOTE AROs
Other (1)
Total
January 1, 2021 202  206  408 
Additions 7  54  61 
Usage (7) (28) (35)
Reversals (20) (6) (26)
December 31, 2021 182  226  408 
Current 23 22  59  81 
Non-current 28 160  167  327 
December 31, 2021 182  226  408 
(1) Other includes environmental, legal, vacant space and other provisions.