Investment in Cenovus Energy	9 Months Ended
Investment in Cenovus Energy	Sep. 30, 2021
Investment In Cenovus Energy [Abstract]
Investment in Cenovus Energy	Note 5—Investment in Cenovus Energy Our investment in Cenovus Energy (CVE) shares is carried on our consolidated balance sheet at fair value of $ 1.4 billion based on the closing price of $ 10.06 per share on the NYSE on the last trading day of the quarter. At September 30, 2021 and December 31, 2020, we held 141 million and 208 million shares of CVE common stock, respectively. At September 30, 2021, our investment approximated 7 percent of the issued and outstanding CVE common stock. During the third quarter, we sold 47 million shares of our CVE common stock, recognizing proceeds of $ 404 million. Since we began disposing of our CVE shares in May 2021, we have sold 67 million shares for total proceeds of $ 584 million, of which $ 569 million was received by the end of the third quarter. Subject to market conditions, we intend to continue to decrease our investment over time. All gains and losses are recognized within “Other income (loss)” on our consolidated income statement. Proceeds related to the sale of our CVE shares are presented within “Cash Flows from Investing Activities” on our consolidated statement of cash flows. for information related to fair value measurement . 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)