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Equity and Noncontrolling Interests - Schedule of Changes in Redeemable Noncontrolling Interest (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |  |
Beginning balance | $ 318 |
Dividends | (4) | $ (4)
Ending balance | 331 |
Foreign currency translation adjustments | 134 | 95
Restatement Adjustment |  |
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |  |
Net income | 5 |
Redeemable Noncontrolling Interest |  |
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |  |
Beginning balance | 57 | 45
Net income | 13 | 7
Dividends | (21) | (18)
Foreign currency translation adjustments | 8 | 11
Ending balance | $ 57 | $ 45

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