v3.24.2
Debt - Interest Rate Swap and Lock Agreements (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Mar. 31, 2023
Mar. 06, 2020
Debt Instrument [Line Items]              
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification, after tax $ 1.2 $ 7.3 $ 6.4 $ 12.5      
Proceeds for retirement of certain hedging relationships     23.7 2.4      
Derivative assets, noncurrent 59.3   59.3   $ 74.1    
Reclassification of gain (loss) from accumulated other comprehensive income for derivative instrument 6.8 2.2 8.9 4.8      
Senior notes: March 2023              
Debt Instrument [Line Items]              
Interest rate           5.00%  
Interest rate swap locks              
Debt Instrument [Line Items]              
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification, after tax       (1.7)      
Accumulated other comprehensive income (loss) (14.1)   (14.1)   (15.9)    
Effective portion of interest rate locks amortized as an adjustment to interest expense expected over the next twelve months     1.1        
Interest rate swap locks | Cash Flow Hedging | Interest Expense              
Debt Instrument [Line Items]              
(Loss) gain on cash flow hedging relationships (0.9) (1.0) (1.7) (2.0)      
2022 interest rate swap              
Debt Instrument [Line Items]              
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification, after tax 1.2 7.3 6.3 10.8      
Accumulated other comprehensive income (loss)         (4.3)    
2022 interest rate swap | Cash Flow Hedging | Interest Expense              
Debt Instrument [Line Items]              
(Loss) gain on cash flow hedging relationships 6.6 1.6 8.0 (0.6)      
Reclassification of gain (loss) from accumulated other comprehensive income for derivative instrument $ 7.7 $ 3.2 $ 10.6 $ 6.8      
2022 interest rate swap | Term Loan Facility              
Debt Instrument [Line Items]              
Derivative assets, noncurrent         $ 24.3    
2022 interest rate swap | Term Loan Facility | US Ecology              
Debt Instrument [Line Items]              
Derivative, notional amount             $ 500.0
Derivative asset             $ 29.1