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CONDENSED CONSOLIDATED STATEMENT OF SHAREDHOLDERS' EQUITY CONDENSED CONSOLIDATED STATEMENT OF SHAREDHOLDERS' EQUITY (PARENTHETICAL) - USD ($) $ in Millions | 3 Months Ended
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Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022
Statement of Stockholders' Equity (Parentheticals) [Abstract] |  |  |  |  |  |
Cash dividends paid per share (in dollars per share) | $ 1.86 | $ 1.86 | $ 1.72 | $ 1.72 | $ 1.72 | $ 1.62
Capital contribution | $ 2 |  |  |  |  |

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