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Equity	12 Months Ended
Equity	Dec. 31, 2019
Equity [Abstract]
Equity	Note 16—Equity Common Stock The changes in our shares of common stock, as categorized in the equity section of the balance sheet, were: Shares 2019 2018 2017 Issued Beginning of year 1,791,637,434 1,785,419,175 1,782,079,107 Distributed under benefit plans 4,014,769 6,218,259 3,340,068 End of year 1,795,652,203 1,791,637,434 1,785,419,175 Held in Treasury Beginning of year 653,288,213 608,312,034 544,809,771 Repurchase of common stock 57,495,601 44,976,179 63,502,263 End of year 710,783,814 653,288,213 608,312,034 Preferred Stock We have authorized 500 million shares of preferred stock, par value $ 0.01 per share, none of which was issued or outstanding at December 31, 2019 or 2018. Noncontrolling Interests At December 31, 2019 and 2018, we had $ 69 million and $ 125 million outstanding, respectively, of equity in less-than-wholly owned consolidated subsidiaries held by noncontrolling interest owners. For both periods, the amounts were related to the Darwin LNG and Bayu-Darwin Pipeline operating joint ventures we control. Repurchase of Common Stock As of December 31, 2019, we had announced a total authorization to repurchase $ 15 billion of our common stock. Repurchase of shares began in November 2016, and totaled 168,553,141 shares at a cost of $ 9,625 million, through December 31, 2019. In February 2020, we announced that the Board of Directors approved an increase to our repurchase authorization from $15 billion to $ 25 billion, to support our plan for future share repurchases.