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Capital Stock - Dividends Common Stock (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Mar. 31, 2024 | Jun. 30, 2023 | Mar. 31, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Equity [Abstract] |  |  |  |  |  |
Base (in dollars per share) | $ 0.21 | $ 0.21 | $ 0.20 | $ 0.20 | $ 0.42 | $ 0.40
Variable (in dollars per share) | 0 | 0 | 0 | 0.37 | 0 | 0.37
Total (in dollars per share) | $ 0.21 | $ 0.21 | $ 0.20 | $ 0.57 | $ 0.42 | $ 0.77
Total dividends | $ 158 | $ 160 | $ 153 | $ 438 | $ 318 | $ 591

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