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Segment Reporting
 12 Months Ended
Dec. 31, 2021
Segment Reporting [Abstract]  
Segment Reporting SEGMENT REPORTING
Our senior management evaluates, oversees and manages the financial performance of our operations through three field groups, which are our operating segments, referred to as Group 1, Group 2, and Environmental Solutions. Group 1 primarily consists of geographic areas located in the western United States, and Group 2 primarily consists of geographic areas located in the southeastern and mid-western United States, and the eastern seaboard of the United States. Our Environmental Solutions operating segment, which provides environmental solutions for daily operations of industrial, petrochemical and refining facilities, is aggregated with Corporate entities and other as it only represents approximately 2% of our consolidated revenue. Each of our operating segments provides integrated environmental services, including collection, transfer, recycling, and disposal.    
Summarized financial information concerning our reportable segments for the years ended December 31, 2021, 2020 and 2019 follows:
Gross
Revenue		Intercompany
Revenue		Net
Revenue		Depreciation,
Amortization,
Depletion and
Accretion		Operating
Income
(Loss)		Capital
Expenditures		Total Assets
2021:
Group 1$6,630.0 $(1,071.1)$5,558.9 $548.1 $1,495.7 $601.9 $12,199.2 
Group 26,240.4 (906.8)5,333.6 541.3 1,135.7 541.8 9,926.9 
Corporate entities and other
451.4 (48.9)402.5 178.8 (555.2)172.6 2,828.9 
Total$13,321.8 $(2,026.8)$11,295.0 $1,268.2 $2,076.2 $1,316.3 $24,955.0 
2020:
Group 1$6,059.3 $(1,001.8)$5,057.5 $502.1 $1,343.3 $546.6 $11,593.1 
Group 25,626.4 (834.5)4,791.9 488.9 966.8 465.8 9,005.3 
Corporate entities and other346.0 (41.8)304.2 167.8 (601.0)182.2 2,835.6 
Total$12,031.7 $(1,878.1)$10,153.6 $1,158.8 $1,709.1 $1,194.6 $23,434.0 
2019:
Group 1$6,012.5 $(1,010.6)$5,001.9 $493.7 $1,231.7 $551.3 $11,389.1 
Group 25,782.1 (838.2)4,943.9 475.0 926.6 490.9 8,944.5 
Corporate entities and other398.4 (44.8)353.6 153.7 (371.1)164.9 2,350.2 
Total$12,193.0 $(1,893.6)$10,299.4 $1,122.4 $1,787.2 $1,207.1 $22,683.8 
Financial information for the years ended December 31, 2020 and 2019 reflects the transfer of our Environmental Solutions operating segment from Group 2 to Corporate entities and other, to align with how our chief operating decision maker began evaluating our operations in December 2020.
Intercompany revenue reflects transactions within and between segments that generally are made on a basis intended to reflect the market value of such services. Capital expenditures for Corporate entities and other primarily include vehicle inventory acquired but not yet assigned to operating locations and facilities. Corporate functions include legal, tax, treasury, information technology, risk management, human resources, closed landfills, other administrative functions, and environmental solutions.