XML 102 R85.htm IDEA: XBRL DOCUMENT v3.22.0.1
Commitments and Contingencies - Other (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2021
USD ($)
site
item
Dec. 31, 2020
USD ($)
Commitments And Contingencies [Line Items]    
Number of landfills adjacent to or near homeowners' properties with agreements guaranteeing market value | item 18  
Environmental remediation reasonably possible additional losses high estimate $ 135  
Environmental remediation liabilities $ 213  
Number of sites listed on the EPA's NPL for which we have been notified we are a PRP | site 73  
Number of owned sites listed on the EPA's NPL for which we have been notified we are a PRP | site 14  
Number of non-owned sites listed on the EPA's NPL for which we have been notified we are a PRP | site 59  
Dollar threshold for environmental matters requiring disclosure under item 103 of the SEC's Regulation S-K $ 1  
Workforce covered by collective bargaining (as a percent) 20.00%  
San Jacinto Waste Pits [Member]    
Commitments And Contingencies [Line Items]    
Environmental remediation liabilities $ 53 $ 55