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Shareholders' Equity - Summary of Repurchases of Common Stock (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2022 | Sep. 30, 2021 | Sep. 30, 2020
Class of Stock Disclosures [Abstract] |  |  |  |
Shares of Common Stock repurchased | 1,362,831 | 1,508,467 | 927,934 | 550,853
Cost of shares of Common Stock repurchased | $ 150.0 | $ 155.0 | $ 107.8 | $ 40.8

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