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Property and Equipment - Property and Equipment (Detail) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Property, Plant and Equipment |  |  |
Property and equipment , gross | $ 34,243 | $ 31,550 |
Less accumulated depreciation and amortization | (20,095) | (18,657) |
Property, Plant and Equipment, Net, Total | 14,148 | 12,893 | $ 11,942
Land [Member] |  |  |
Property, Plant and Equipment |  |  |
Property and equipment , gross | 740 | 656 |
Landfill [Member] |  |  |
Property, Plant and Equipment |  |  |
Property and equipment , gross | 16,842 | 15,910 |
Vehicles [Member] |  |  |
Property, Plant and Equipment |  |  |
Property and equipment , gross | 6,219 | 5,344 |
Machinery and Equipment [Member] |  |  |
Property, Plant and Equipment |  |  |
Property and equipment , gross | 3,293 | 3,140 |
Containers [Member] |  |  |
Property, Plant and Equipment |  |  |
Property and equipment , gross | 2,869 | 2,616 |
Building and Improvements [Member] |  |  |
Property, Plant and Equipment |  |  |
Property and equipment , gross | 3,529 | 3,174 |
Furniture, Fixtures and Office Equipment [Member] |  |  |
Property, Plant and Equipment |  |  |
Property and equipment , gross | 751 | 710 |
Tangible Property and Equipment [Member] |  |  |
Property, Plant and Equipment |  |  |
Less accumulated depreciation and amortization | (10,403) | (9,331) |
Landfill Airspace [Member] |  |  |
Property, Plant and Equipment |  |  |
Less accumulated depreciation and amortization | $ (9,692) | $ (9,326) |

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- Definition Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
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