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v3.25.4

Employee Share-Based Incentive Compensation Plans - Performance Shares (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Target Performance Shares Outstanding |  |  |  |  |  |
Beginning of period (in shares) |  |  |  | 34,859 | 37,031 | 39,449
Shares paid or expired (in shares) |  |  |  | (13,150) | (13,475) | (13,350)
Grants in period (in shares) |  |  |  | 10,670 | 11,405 | 10,895
Forfeitures and cancellations (in shares) |  |  |  | 37 | (102) | 37
End of period (in shares) |  |  |  | 32,416 | 34,859 | 37,031
Accrued Expense |  |  |  |  |  |
Beginning of period |  |  |  | $ 71.1 | $ 69.4 | $ 67.5
Shares paid or expired |  |  |  | (48.7) | (44.9) | (40.8)
New grants |  |  |  | 0.0 | 0.0 | 0.0
Forfeitures and cancellations |  |  |  | 0.0 | 0.0 | (0.1)
Expense recognized |  |  |  | 50.8 | 46.6 | 42.8
End of period |  |  |  | $ 73.2 | $ 71.1 | $ 69.4
Performance Shares |  |  |  |  |  |
Accrued Expense |  |  |  |  |  |
Percentage of target payout - minimum actual | 200.00% | 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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