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Commitments and Contingencies - Other (Details)
 2 Months Ended 3 Months Ended 12 Months Ended
Jan. 31, 2011
item
Sep. 30, 2017
USD ($)
Dec. 31, 2018
USD ($)
site
item
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Commitments And Contingencies [Line Items]          
Approximate number of homeowners' properties adjacent to or near certain of our landfills with agreements guaranteeing market value | item     775    
Number of landfills adjacent to or near homeowners' properties with agreements guaranteeing market value | item     19    
Environmental remediation liabilities     $ 237,000,000    
Number of sites listed on the EPA's NPL for which we have been notified we are a PRP | site     75    
Number of owned sites listed on the EPA's NPL for which we have been notified we are a PRP | site     15    
Number of non-owned sites listed on the EPA's NPL for which we have been notified we are a PRP | site     60    
Dollar threshold for environmental matters requiring disclosure under item 103 of the SEC's Regulation S-K     $ 100,000    
Approximate percentage of workforce covered by collective bargaining agreements     20.00%    
Expected time of completion of IRS audits     15 months    
Withdrawal from Multiemployer Pension Plans [Member]          
Commitments And Contingencies [Line Items]          
Charge to "Operating" expenses   $ 11,000,000 $ 3,000,000 $ 12,000,000  
San Jacinto Waste Pits [Member]          
Commitments And Contingencies [Line Items]          
Environmental remediation liabilities     55,000,000 55,000,000  
Revisions in estimate   $ 9,000,000   $ 11,000,000 $ 44,000,000
Waimanalo Gulch Sanitary Landfill          
Commitments And Contingencies [Line Items]          
Number of major rainfalls | item 2        
Wheelabrator [Member]          
Commitments And Contingencies [Line Items]          
Maximum future payments     $ 85,000,000