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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - USD ($) $ in Millions | 12 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Dividends paid, quarterly, per share (in dollars per share) | $ 0.45 | $ 0.375 | $ 0.32
Dividends declared, quarterly, per share (in dollars per share) | $ 0.45 | $ 0.375 | $ 0.32
Preferred stock | $ 1,698 | $ 2,324 |
Series A convertible participating preferred stock |  |  |
Preferred stock | $ 456 | $ 1,000 | $ 486

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