| PROPERTY AND EQUIPMENT | 
6.    PROPERTY AND EQUIPMENT  The following table presents the changes in cost and accumulated depreciation of GFL’s property and equipment for the periods indicated:  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |    |       | Land,  |       |   |   |       |   |   |       | Machinery   |       |   |   |       |   |   |       |   |   |       |   |   |    |   |  buildings and   |   |   |   |   |   |   |   | and   |   | Assets under   |   |   |   |   | Right-of-  |   |   |   |    |       | improvements  |       | Landfills  |       | Vehicles  |       | equipment  |       | development  |       | Containers  |       | use assets  |       | Total  |  Cost  |   |     |   |   |     |   |   |     |   |   |     |   |   |     |   |   |     |   |   |     |   |   |     |   |  Balance, December 31, 2021  |   | $  |  1,482.7  |   | $  |  2,257.0  |   | $  |  2,082.0  |   | $  |  1,129.0  |   | $  |  69.3  |   | $  |  549.3  |   | $  |  348.7  |   | $  |  7,918.0  |  Additions  |   |   |  80.3  |   |   |  135.5  |   |   |  297.5  |   |   |  133.3  |   |   |  119.2  |   |   |  126.5  |   |   |  104.2  |   |   |  996.5  |  Acquisitions via business combinations  |   |   |  79.1  |   |   |  220.6  |   |   |  167.6  |   |   |  44.2  |   |   |  6.2  |   |   |  77.5  |   |   |  19.4  |   |   |  614.6  |  Adjustments for prior year acquisitions  |   |   |  —  |   |   |  122.0  |   |   |  (6.5)  |   |   |  (0.7)  |   |   |  —  |   |   |  —  |   |   |  1.5  |   |   |  116.3  |  Adjustments for asset retirement obligations  |   |   |  —  |   |   |  (183.1)  |   |   |  —  |   |   |  —  |   |   |  —  |   |   |  —  |   |   |  —  |   |   |  (183.1)  |  Disposals  |   |   |  (69.4)  |   |   |  (57.1)  |   |   |  (50.8)  |   |   |  (254.2)  |   |   |  (4.8)  |   |   |  (1.0)  |   |   |  (17.9)  |   |   |  (455.2)  |  Transfers  |   |   |  56.0  |   |   |  94.2  |   |   |  7.5  |   |   |  (1.4)  |   |   |  (148.7)  |   |   |  (3.2)  |   |   |  (4.4)  |   |   |  —  |  Changes in foreign exchange  |   |   |  58.4  |   |   |  156.0  |   |   |  96.8  |   |   |  31.3  |   |   |  10.4  |   |   |  39.9  |   |   |  5.5  |   |   |  398.3  |  Balance, December 31, 2022  |    |   |  1,687.1  |    |   |  2,745.1  |    |   |  2,594.1  |    |   |  1,081.5  |    |   |  51.6  |    |   |  789.0  |    |   |  457.0  |    |   |  9,405.4  |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  Balance, December 31, 2022  |    |   |  1,687.1  |    |   |  2,745.1  |    |   |  2,594.1  |    |   |  1,081.5  |    |   |  51.6  |    |   |  789.0  |    |   |  457.0  |    |   |  9,405.4  |  Additions  |    |   |  118.6  |    |   |  286.5  |    |   |  386.9  |    |   |  204.7  |    |   |  140.0  |    |   |  94.2  |    |   |  101.5  |    |   |  1,332.4  |  Acquisitions via business combinations  |    |   |  81.0  |    |   |  120.1  |    |   |  112.8  |    |   |  79.8  |    |   |  0.5  |    |   |  45.6  |    |   |  29.7  |    |   |  469.5  |  Adjustments for prior year acquisitions  |    |   |  12.5  |    |   |  —  |    |   |  (0.2)  |    |   |  (0.4)  |    |   |  —  |    |   |  —  |    |   |  —  |    |   |  11.9  |  Adjustments for asset retirement obligations  |    |   |  —  |    |   |  22.5  |    |   |  —  |    |   |  —  |    |   |  —  |    |   |  —  |    |   |  —  |    |   |  22.5  |  Disposals  |    |   |  (74.2)  |    |   |  (45.2)  |    |   |  (250.9)  |    |   |  (48.1)  |    |   |  (6.5)  |    |   |  (57.3)  |    |   |  (21.3)  |    |   |  (503.5)  |  Transfers  |   |   |  12.7  |   |   |  13.2  |   |   |  9.8  |   |   |  —  |   |   |  (34.3)  |   |   |  0.3  |   |   |  (1.7)  |   |   |  —  |  Changes in foreign exchange  |    |   |  (25.5)  |    |   |  (64.6)  |    |   |  (45.7)  |    |   |  (15.6)  |    |   |  (2.6)  |    |   |  (18.9)  |    |   |  (3.0)  |    |   |  (175.9)  |  Balance, December 31, 2023  |    |   |  1,812.2  |    |   |  3,077.6  |    |   |  2,806.8  |    |   |  1,301.9  |    |   |  148.7  |    |   |  852.9  |    |   |  562.2  |    |   |  10,562.3  |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  Accumulated depreciation  |    |   |     |    |   |     |    |   |     |    |   |     |    |   |     |    |   |     |    |   |     |    |   |     |  Balance,  December 31, 2021  |    |   |  107.1  |    |   |  474.9  |    |   |  679.0  |    |   |  389.2  |    |   |  —  |    |   |  163.0  |    |   |  94.2  |    |   |  1,907.4  |  Depreciation  |    |   |  65.2  |    |   |  294.6  |    |   |  302.9  |    |   |  167.7  |    |   |  —  |    |   |  97.5  |    |   |  73.0  |    |   |  1,000.9  |  Disposals  |    |   |  (18.5)  |    |   |  (7.8)  |    |   |  (31.0)  |    |   |  (104.3)  |    |   |  —  |    |   |  (0.8)  |    |   |  (7.2)  |    |   |  (169.6)  |  Impairment  |   |   |  11.9  |   |   |  —  |   |   |  —  |   |   |  2.3  |   |   |  —  |   |   |  —  |   |   |  —  |   |   |  14.2  |  Changes in foreign exchange  |    |   |  5.3  |    |   |  42.4  |    |   |  36.4  |    |   |  13.4  |    |   |  —  |    |   |  12.8  |    |   |  1.9  |    |   |  112.2  |  Balance, December 31, 2022  |    |   |  171.0  |    |   |  804.1  |    |   |  987.3  |    |   |  468.3  |    |   |  —  |    |   |  272.5  |    |   |  161.9  |    |   |  2,865.1  |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  Balance, December 31, 2022  |    |   |  171.0  |    |   |  804.1  |    |   |  987.3  |    |   |  468.3  |    |   |  —  |    |   |  272.5  |    |   |  161.9  |    |   |  2,865.1  |  Depreciation  |    |   |  70.0  |    |   |  283.8  |    |   |  288.3  |    |   |  166.8  |    |   |  —  |    |   |  116.3  |    |   |  74.8  |    |   |  1,000.0  |  Disposals  |    |   |  (13.7)  |    |   |  (19.8)  |    |   |  (132.0)  |    |   |  (28.3)  |    |   |  —  |    |   |  (26.9)  |    |   |  (11.5)  |    |   |  (232.2)  |  Impairment  |   |   |  —  |   |   |  —  |   |   |  8.7  |   |   |  0.1  |   |   |  —  |   |   |  —  |   |   |  —  |   |   |  8.8  |  Changes in foreign exchange  |    |   |  (3.1)  |    |   |  (22.8)  |    |   |  (18.3)  |    |   |  (7.1)  |    |   |  —  |    |   |  (7.7)  |    |   |  (1.1)  |    |   |  (60.1)  |  Balance, December 31, 2023  |    |   |  224.2  |    |   |  1,045.3  |    |   |  1,134.0  |    |   |  599.8  |    |   |  —  |    |   |  354.2  |    |   |  224.1  |    |   |  3,581.6  |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  Carrying amounts  |    |   |     |    |   |     |    |   |     |    |   |     |    |   |     |    |   |     |    |   |     |    |   |     |  At December 31, 2022  |   | $  |  1,516.1  |   | $  |  1,941.0  |   | $  |  1,606.8  |   | $  |  613.2  |   | $  |  51.6  |   | $  |  516.5  |   | $  |  295.1  |   | $  |  6,540.3  |  At December 31, 2023  |   | $  |  1,588.0  |   | $  |  2,032.3  |   | $  |  1,672.8  |   | $  |  702.1  |   | $  |  148.7  |   | $  |  498.7  |   | $  |  338.1  |   | $  |  6,980.7  |  
  For the year ended December 31, 2023, total depreciation of property and equipment was $1,004.4 million ($1,003.9 million for the year ended December 31, 2022). Of the total depreciation for the year ended December 31, 2023, $974.9 million was included in cost of sales ($974.8 million for the year ended December 31, 2022) and $29.5 million was included in selling, general and administrative expenses ($29.1 million for the year ended December 31, 2022). Depreciation of property and equipment of $1,004.4 million for the year ended December 31, 2023 ($1,008.7 million for the year ended December 31, 2022) as presented in the statement of cash flows was comprised of depreciation of $1,000.0 million ($1,000.9 million for the year ended December 31, 2022) shown in the table above and depreciation of $4.4 million ($7.8 million for the year ended December 31, 2022) due to the difference between the ARO calculated using the credit-adjusted, risk-free discount rate required for measurement of the ARO through purchase accounting, compared to the risk-free discount rate required for annual valuations. 
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