Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details)

Summary of Significant Accounting Policies (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2020
Sep. 30, 2020
Principles of Consolidation    
Third party out of pocket costs reimbursement (as a percent)   3.00%
Property and Equipment    
Impairment of long-lived assets $ 89 $ 89
Asset Retirement Obligations    
Post-closure period for landfill to maintain and monitor   30 years
Income taxes    
Income tax refund receivable as a result of the CARES Act 55  
Current income tax benefit 11  
Previously recognized deferred income tax benefit $ 44  
Income tax refund received   $ 39