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Earnings Per Share | 9 Months Ended
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Jun. 30, 2023
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share The following table reconciles the numerators and denominators used to calculate basic and diluted earnings per share (in millions):
| Three Months Ended June 30, |  | Nine Months Ended June 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
Net income attributable to Johnson Controls | $ | 1,049 |  |  | $ | 379 |  |  | $ | 1,300 |  |  | $ | 771 |
Weighted Average Shares Outstanding |  |  |  |  |  |  |
Basic weighted average shares outstanding | 683.3 |  |  | 692.2 |  |  | 685.7 |  |  | 698.6 |
Effect of dilutive securities: |  |  |  |  |  |  |
Stock options, unvested restricted stock and unvested performance share awards | 2.9 |  |  | 2.7 |  |  | 3.1 |  |  | 3.8 |
Diluted weighted average shares outstanding | 686.2 |  |  | 694.9 |  |  | 688.8 |  |  | 702.4 |
Antidilutive Securities |  |  |  |  |  |  |
Stock options and unvested restricted stock | 0.2 |  |  | 0.6 |  |  | 0.3 |  |  | 0.3 |

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