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Equity - Share Repurchase Plan, Preferred Stock (Details) $ / shares in Units, $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2023 USD ($) item $ / shares shares | Dec. 31, 2022 USD ($) item $ / shares shares | Dec. 31, 2021 USD ($) $ / shares shares | Oct. 31, 2023 USD ($) | Oct. 30, 2023 USD ($) | Jul. 26, 2022 USD ($)
Share Repurchase Plan |  |  |  |  |  |
Value of shares authorized by the Board of Directors to be repurchased under share repurchase plan | $ |  |  |  |  | $ 1,500.0 | $ 1,000.0
Remaining value of shares authorized by the Board of Directors to be repurchased under share repurchase plan | $ | $ 1,440.0 |  |  | $ 261.5 |  |
Repurchase of common shares (in shares) | 1,878,000 | 3,525,000 | 2,107,000 |  |  |
Average costs per share | $ / shares | $ 255.30 | $ 178.81 | $ 153.55 |  |  |
Value of shares repurchased | $ | $ 479.5 | $ 630.3 | $ 323.5 |  |  |
Preferred Stock |  |  |  |  |  |
Preferred stock, authorized shares | 5,000,000 | 5,000,000 |  |  |  |
Preferred stock, par value (in dollars per share) | $ / shares | $ 0.001 | $ 0.001 |  |  |  |
Preferred stock, issued shares | 0 | 0 |  |  |  |
Preferred stock, outstanding shares | 0 | 0 |  |  |  |
Minimum number of series in which preferred shares may be issued | item | 1 | 1 |  |  |  |
Issued and outstanding common shares, beginning balance (in shares) | 58,787,000 | 61,806,000 | 63,600,000 |  |  |
Issued to settle RSUs and PSUs, net of withheld shares (in shares) | 362,000 | 506,000 | 313,000 |  |  |
Repurchased (in shares) | (1,878,000) | (3,525,000) | (2,107,000) |  |  |
Issued and outstanding common shares, ending balance (in shares) | 57,271,000 | 58,787,000 | 61,806,000 |  |  |

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