Employee Share-Based Incentive Compensation Plans - Restricted Shares (Details) - Restricted Stock - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Restricted Shares | ||||
| Beginning of period (in shares) | 31,665 | 32,885 | 32,910 | 35,390 |
| Vested (in shares) | 0 | 0 | (10,835) | (13,150) |
| Issued (in shares) | 0 | 25 | 9,615 | 10,670 |
| Forfeited (in shares) | 0 | 0 | (25) | 0 |
| End of period (in shares) | 31,665 | 32,910 | 31,665 | 32,910 |
| Unamortized Issue Date Fair Value | ||||
| Beginning of period | $ 32.7 | $ 30.7 | $ 21.0 | $ 19.9 |
| Vested | 0.0 | 0.0 | 0.0 | 0.0 |
| Issued | 0.0 | 0.1 | 21.3 | 19.6 |
| Forfeited | 0.0 | 0.0 | (0.1) | 0.0 |
| Expense recognized | (5.4) | (4.9) | (14.9) | (13.6) |
| End of period | $ 27.3 | $ 25.9 | $ 27.3 | $ 25.9 |
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- Definition Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of shares issued under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition The total reduction to unamortized compensation cost for performance shares forfeited during the period. No definition available.
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- Definition The total fair value (on the date of issue) for restricted share awards issued during the period. No definition available.
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- Definition Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount of Expense Recognized No definition available.
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- Definition Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Vested No definition available.
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- Details
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