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v3.25.4

Retirement and Deferred Compensation Plans - Additional Information (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2025 USD ($) Insurance_contract | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Defined Benefit Plan Disclosure [Line Items] |  |  |
Pension liability | $ 2.0 | $ 3.8 | $ 5.8
Deferred compensation plans, asset and liability | 188.6 | 165.4 |
Realized Investment Gains (Losses) | 23.3 | 21.7 | 21.9
Statutory Plans Member [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total expense | 21.2 | 24.4 | $ 29.5
Retiree Health Care Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Prior service cost (credit) recognized in accumulated other comprehensive loss | 0.8 |  |
Pension Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Accumulated benefit obligation for plan | 634.3 | 584.4 |
Projected benefit obligation for plans | 742.1 | 687.8 |
Accumulated benefit obligation for plans that do not have plan assets | 83.6 | 79.3 |
Prior service cost (credit) recognized in accumulated other comprehensive loss | 0.7 |  |
Estimated Net Loss | 0.6 |  |
Estimated employer contribution to pension plans during next fiscal year | 17.0 |  |
Pension Plan [Member] | Qualified Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Accumulated benefit obligation for plan | 717.9 | 663.7 |
Postretirement Health Coverage [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net loss recognized in accumulated other comprehensive loss | (0.8) | (1.1) |
Prior service cost (credit) recognized in accumulated other comprehensive loss | $ 0.2 | $ 0.4 |
Discount rate used in measurement of benefit obligation (as a percent) | 5.10% | 5.50% |
Discount rate used in measurement of net periodic benefit cost (as a percent) | 5.50% | 4.90% | 5.10%
Health care cost trend rate assumed for next fiscal year (as a percent) | 7.80% |  |
Ultimate health care cost trend rate (as a percent) | 4.50% |  |
Foreign Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Pension liability | $ 2.0 | $ 3.8 | $ 5.8
Foreign Plan [Member] | Pension Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected long-term return on plan assets | 3.40% | 3.40% | 3.50%
Number of foreign plans using guaranteed insurance contracts | Insurance_contract | 5 |  |
Net loss recognized in accumulated other comprehensive loss | $ (31.4) | $ 1.2 |
Prior service cost (credit) recognized in accumulated other comprehensive loss | $ 3.2 | $ 4.1 |
Discount rate used in measurement of benefit obligation (as a percent) | 3.10% | 2.70% |
Foreign Plan [Member] | Pension Plan [Member] | Minimum [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected long-term return on plan assets | 2.50% |  |
Foreign Plan [Member] | Pension Plan [Member] | Maximum [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected long-term return on plan assets | 5.90% |  |
UNITED STATES | Pension Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net loss recognized in accumulated other comprehensive loss | $ 4.2 | $ 3.6 |
Prior service cost (credit) recognized in accumulated other comprehensive loss | $ 0.0 | $ 0.0 |
Discount rate used in measurement of benefit obligation (as a percent) | 5.00% | 5.50% |
Company Sponsored Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total expense | $ 16.1 | $ 17.8 | $ 19.2

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