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Landfill and Environmental Costs - Narrative (Details)
$ in Millions, ft³ in Billions
 3 Months Ended
Sep. 27, 2018
USD ($)
Mar. 31, 2020
USD ($)
landfill
ft³
Mar. 31, 2019
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Environmental Remediation Obligations [Abstract]          
Number of active solid waste landfills | landfill   190      
Total available disposal capacity (in cubic feet) | ft³   137.7      
Number of closed landfills | landfill   130      
Environmental Exit Cost [Line Items]          
Amount of aggregate potential remediation liability   $ 365.0      
Payments for management and monitoring of remediation area   17.2 $ 7.2    
Remediation liability   488.7 $ 527.3 $ 500.2 $ 540.2
Bridgeton Landfill          
Environmental Exit Cost [Line Items]          
Payments for management and monitoring of remediation area   12.1      
Remediation liability   132.4      
Remediation liability expected to be paid during the remainder of 2018   12.0      
Insurance recoveries   10.8      
Bridgeton Landfill | Maximum          
Environmental Exit Cost [Line Items]          
Range of loss for remediation costs   $ 163.0      
West Lake Landfill Superfund Site          
Environmental Exit Cost [Line Items]          
Environmental exit costs, anticipated cost $ 229.0        
West Lake Landfill Superfund Site | Minimum          
Environmental Exit Cost [Line Items]          
Environmental exit costs, time period allotted for completion 4 years        
West Lake Landfill Superfund Site | Maximum          
Environmental Exit Cost [Line Items]          
Environmental exit costs, time period allotted for completion 5 years