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Asset Impairments and Unusual Items - Details (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Oct. 30, 2020
Income Expense From Divestitures Asset Impairments And Unusual Items [Line Items]          
(Gain) loss from divestitures, asset impairments and unusual items, net   $ (16) $ 35 $ 42  
Increase in legal accruals   20      
Asset impairments   8 68 42  
Gain (loss) on sale of assets   44 33    
Goodwill impairment charges       27  
Solid waste operations impairment       15  
Investment impairment       52  
Disposed of by Sale, Not Discontinued Operations [Member]          
Income Expense From Divestitures Asset Impairments And Unusual Items [Line Items]          
Gain (loss) on sale of assets   44 33    
Advanced Disposal [Member] | Disposed of by Sale, Not Discontinued Operations [Member]          
Income Expense From Divestitures Asset Impairments And Unusual Items [Line Items]          
Gain (loss) on sale of assets     33    
Divestiture consideration         $ 856
Refined Coal Facility [Member]          
Income Expense From Divestitures Asset Impairments And Unusual Items [Line Items]          
Equity method investments impairment charges $ 7   7    
Canadian operations [Member] | Disposed of by Sale, Not Discontinued Operations [Member]          
Income Expense From Divestitures Asset Impairments And Unusual Items [Line Items]          
Gain (loss) on sale of assets   35      
Other ancillary operations [Member]          
Income Expense From Divestitures Asset Impairments And Unusual Items [Line Items]          
Asset impairments     7    
Other ancillary operations [Member] | Disposed of by Sale, Not Discontinued Operations [Member]          
Income Expense From Divestitures Asset Impairments And Unusual Items [Line Items]          
Gain (loss) on sale of assets   $ 8      
Energy and Environmental Services [Member]          
Income Expense From Divestitures Asset Impairments And Unusual Items [Line Items]          
Goodwill impairment charges       17  
Lamp Tracker Reporting Unit [Member]          
Income Expense From Divestitures Asset Impairments And Unusual Items [Line Items]          
Goodwill impairment charges       $ 10  
Landfill [Member]          
Income Expense From Divestitures Asset Impairments And Unusual Items [Line Items]          
Asset impairments     20    
Landfills and Oil Field Waste Injection Facility [Member]          
Income Expense From Divestitures Asset Impairments And Unusual Items [Line Items]          
Asset impairments     $ 41