XML 94 R69.htm IDEA: XBRL DOCUMENT v3.22.4
Investment in Cenovus Energy - Gains and Losses Recorded in Other Income (Loss) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Debt and Equity Securities, FV-NI [Line Items]      
Total Net gain (loss) on equity securities $ 251 $ 1,040 $ (855)
Cenovus Energy Inc      
Debt and Equity Securities, FV-NI [Line Items]      
Total Net gain (loss) on equity securities 251 1,040 (855)
Less: Net gain (loss) on equity securities sold during the period 251 473
Unrealized gain (loss) on equity securities still held at the reporting date $ 567 $ (855)