v3.21.2
Investment in Cenovus Energy (Tables)
 9 Months Ended
Sep. 30, 2021
Cenovus Energy Inc [Member]  
Schedule Of Available For Sale Securities [Line Items]  
Gains and Losses Recorded in Other Income (Loss)
Millions of Dollars
Three Months Ended
Nine Months Ended
September 30
September 30
2021
2020
2021
2020
Total
 
Net gain (loss) on equity securities
$
17
(162)
743
(1,302)
Less: Net gain (loss) on equity securities sold during
 
the period
(50)
-
177
-
Unrealized gain (loss) on equity securities
 
still held at
 
the reporting date
$
67
(162)
566
(1,302)