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Investments in equity-accounted associates and joint ventures (Tables)
 12 Months Ended
Oct. 31, 2023
Text Block [Abstract]  
Summary of Aggregate Financial Information Related to Proportionate Interest in the Equity-accounted Joint Ventures
The following table provides the summarized aggregate financial information related to our proportionate interest in the equity-accounted joint ventures:
 
$ millions, for the year ended October 31
   
2023
      2022  
Net income
   
$
46
 
    $ 52  
OCI
   
 
61
 
      (218 ) 
Total comprehensive income (loss)
   
$
    107
 
    $     (166 ) 
Summary of Aggregate Financial Information Related to Proportionate Interest in Equity-accounted Associates
The following table provides the summarized aggregate financial information related to our proportionate interest in equity-accounted associates:
 
$ millions, for the year ended October 31
   
2023
     2022  
Net income (loss)
   
$
(16
) 
   $ (5 ) 
OCI
   
 
5
 
     –  
Total comprehensive income (loss)
   
$
    (11
) 
   $     (5 )