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Share-based Payments (Tables) | 3 Months Ended
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Dec. 31, 2024
Share-Based Payment Arrangement [Abstract] |
Schedule of Restricted Stock Units and PEP Units Activity | Restricted stock units and PEP unit activity for the three months ended December 31 was as follows:
| 2024 |  | 2023
| Restricted Stock Units |  | Weighted Average Grant-Date Fair Value |  | PEP Units |  | Weighted Average Grant-Date Fair Value |  | Restricted Stock Units |  | Weighted Average Grant-Date Fair Value |  | PEP Units |  | Weighted Average Grant-Date Fair Value
| (in millions) |  |  |  | (in millions) |  |  |  | (in millions) |  |  |  | (in millions) |  |
Outstanding at September 30, | 0.8 |  | $ | 83.96 |  |  | 0.7 |  | $ | 95.38 |  |  | 0.8 |  | $ | 68.34 |  |  | 0.7 |  | $ | 75.54 |
Granted | 0.2 |  | $ | 111.45 |  |  | 0.2 |  | $ | 129.50 |  |  | 0.3 |  | $ | 92.27 |  |  | 0.2 |  | $ | 104.66 |
PEP units earned | — |  | $ | — |  |  | 0.1 |  | $ | 85.46 |  |  | — |  | $ | — |  |  | 0.2 |  | $ | 52.50 |
Vested | (0.2) |  | $ | 74.63 |  |  | (0.3) |  | $ | 85.46 |  |  | (0.3) |  | $ | 47.82 |  |  | (0.4) |  | $ | 52.50 |
Outstanding at December 31, | 0.8 |  | $ | 95.45 |  |  | 0.7 |  | $ | 109.68 |  |  | 0.8 |  | $ | 83.56 |  |  | 0.7 |  | $ | 95.29 |

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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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