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Property and Equipment, Net
 12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Property and Equipment, Net PROPERTY AND EQUIPMENT, NET
A summary of property and equipment, net as of December 31 follows:
20232022
Land$878.1 $779.7 
Landfill development costs9,911.2 9,574.2 
Vehicles and equipment10,231.9 9,465.3 
Buildings and improvements1,921.9 1,704.6 
Construction-in-progress – landfill
350.4 358.3 
Construction-in-progress – other
553.6 358.6 
$23,847.1 $22,240.7 
Less: accumulated depreciation, depletion and amortization
Landfill development costs$(5,516.2)$(5,058.9)
Vehicles and equipment(6,147.7)(5,679.9)
Buildings and improvements(832.3)(757.9)
(12,496.2)(11,496.7)
Property and equipment, net$11,350.9 $10,744.0 
Depreciation, amortization and depletion of property and equipment was $1,368.4 million, $1,245.6 million and $1,111.7 million for the years ended December 31, 2023, 2022 and 2021, respectively.