v3.26.1
Dispositions - Narrative (Details) - Legacy Enviri's Clean Earth segment - Discontinued operations, disposed of by sale - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 01, 2026
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disposal Group, Including Discontinued Operations [Line Items]          
Purchase price $ 3,000.0        
Cash proceeds from sale of business 1,300.0        
Consideration settled with intercompany note $ 1,700.0        
Corporate overhead expenses retained   $ 1.3 $ 1.9 $ 3.2 $ 3.9