v3.24.0.1
Debt (Cash Flow Hedges) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Mar. 06, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Realized gain (loss) on interest rate swap locks   $ 9.3 $ (1.1) $ (4.6)  
Unrealized gain   14.0 8.4 0.0  
Term Loan Facility          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Interest rate         0.832%
Interest rate swap locks          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
AOCI, cumulative gain (loss), after tax   (15.9) (21.4)    
Effective portion of interest rate locks amortized as an adjustment to Interest expense expected over the next twelve months   2.7      
Interest rate swap locks | Cash Flow Hedging | Interest Expense          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Realized gain (loss) on interest rate swap locks   (3.8) (4.4) $ (4.6)  
2022 Interest Rate Swap          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
AOCI, cumulative gain (loss), after tax   4.3 5.1    
Unrealized gain   12.2 8.4    
2022 Interest Rate Swap | Term Loan Facility          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative assets   24.3 36.0    
2022 Interest Rate Swap | Term Loan Facility | Forecast          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Effective portion of interest rate locks amortized as an adjustment to Interest expense expected over the next twelve months $ 5.0        
2022 Interest Rate Swap | Term Loan Facility | US Ecology          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative, notional amount   350.0 390.0   $ 500.0
Derivative assets         $ 29.1
2022 Interest Rate Swap | Cash Flow Hedging | Interest Expense          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Realized gain (loss) on interest rate swap locks   $ 13.1 $ 3.3