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Segment and Related Information - Revenues mix (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Revenue from External Customer [Line Items]        
Operating revenues $ 4,476 $ 3,561 $ 8,588 $ 7,290
Operating Segments [Member]        
Revenue from External Customer [Line Items]        
Operating revenues 5,435 4,322 10,406 8,852
Operating Segments [Member] | Collection [Member]        
Revenue from External Customer [Line Items]        
Operating revenues 2,918 2,325 5,690 4,843
Operating Segments [Member] | Commercial [Member]        
Revenue from External Customer [Line Items]        
Operating revenues 1,178 928 2,309 1,991
Operating Segments [Member] | Residential [Member]        
Revenue from External Customer [Line Items]        
Operating revenues 794 657 1,576 1,307
Operating Segments [Member] | Industrial [Member]        
Revenue from External Customer [Line Items]        
Operating revenues 811 625 1,554 1,318
Operating Segments [Member] | Other collection [Member]        
Revenue from External Customer [Line Items]        
Operating revenues 135 115 251 227
Operating Segments [Member] | Landfill [Member]        
Revenue from External Customer [Line Items]        
Operating revenues 1,075 874 1,990 1,761
Operating Segments [Member] | Transfer [Member]        
Revenue from External Customer [Line Items]        
Operating revenues 532 439 997 880
Operating Segments [Member] | Recycling [Member]        
Revenue from External Customer [Line Items]        
Operating revenues 397 275 739 529
Operating Segments [Member] | Other Revenue [Member]        
Revenue from External Customer [Line Items]        
Operating revenues 513 409 990 839
Intercompany Operating Revenues [Member]        
Revenue from External Customer [Line Items]        
Operating revenues $ (959) $ (761) $ (1,818) $ (1,562)