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Employee Share-Based Incentive Compensation Plans - Performance Shares (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2024 | Mar. 31, 2023
Target Performance Shares Outstanding |  |  |  |
Beginning of period (in shares) |  |  | 37,031 | 39,449
Shares paid (in shares) |  |  | (13,475) | (13,350)
New grants (in shares) |  |  | 10,405 | 10,895
Forfeitures and cancellations (in shares) |  |  | (46) | (37)
End of period (in shares) | 34,007 | 37,031 | 34,007 | 37,031
Accrued Expense |  |  |  |
Beginning of period |  |  | $ 69.4 | $ 67.5
Shares paid |  |  | (44.9) | (40.8)
New grants |  |  | 0.0 | 0.0
Forfeitures and cancellations |  |  | (0.3) | (0.4)
Expense recognized |  |  | 19.4 | 9.3
End of period | $ 44.2 | $ 36.4 | $ 44.2 | $ 36.4
Performance Share |  |  |  |
Accrued Expense |  |  |  |
Percentage of target payout - minimum actual | 188.00% | 200.00% |  |

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- Definition The amount of performance shares that were paid out (including deposits into a deferred compensation plan) or that expired due to failure to meet performance criteria. + References No definition available. + Details
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