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v3.20.4

Employee Benefits (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Retirement Benefits, Description [Abstract] |  |  |
Number of participants domestic pension plan | 3,100 |  |
Number of participants postretirement benefit plan | 1,400 |  |
Deferred Compensation Arrangements [Abstract] |  |  |
Deferred compensation and benefit liability balance | $ 188.5 | $ 197.5 |
Deferred compensation and benefit arrangement expense | 11.0 | 19.4 | $ 10.0
Cash Surrender Value of Life Insurance | 180.8 | 178.2 |
Long-Term Disability Plan [Abstract] |  |  |
Long-term disability plan obligation | 8.7 | $ 5.5 |
Long term disability plan, income replacement benefit obligation | $ 0.0 |  |

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