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Fair Value Measurements - Measured on a Recurring Basis (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Liabilities:    
Life insurance owned by company $ 16.5 $ 14.9
Fair Value, Measurements, Recurring    
Assets:    
Deferred compensation plan investments 3.7 3.0
Total assets 3.7 3.0
Liabilities:    
Deferred compensation arrangement 15.9 15.5
Total liabilities 15.9 15.5
Fair Value, Measurements, Recurring | Level 1    
Assets:    
Deferred compensation plan investments 3.7 3.0
Total assets 3.7 3.0
Liabilities:    
Deferred compensation arrangement 15.9 15.5
Total liabilities 15.9 15.5
Fair Value, Measurements, Recurring | Level 2    
Assets:    
Deferred compensation plan investments 0.0 0.0
Total assets 0.0 0.0
Liabilities:    
Deferred compensation arrangement 0.0 0.0
Total liabilities 0.0 0.0
Fair Value, Measurements, Recurring | Level 3    
Assets:    
Deferred compensation plan investments 0.0 0.0
Total assets 0.0 0.0
Liabilities:    
Deferred compensation arrangement 0.0 0.0
Total liabilities $ 0.0 $ 0.0