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CLOSURE AND POST-CLOSURE LIABILITIES - Changes in Post-Closure Liabilities (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2024
USD ($)
Changes to post-closure liabilities  
Beginning balance $ 118,600
Liabilities assumed in acquisitions 1,845
New asset retirement obligations 4,093
Accretion 7,220
Changes in estimates recorded to consolidated statement of operations (254)
Changes in estimates recorded to consolidated balance sheet 85
Expenditures (11,856)
Currency translation and other (155)
Ending balance 119,578
Landfill Retirement Liability  
Changes to post-closure liabilities  
Beginning balance 59,443
Liabilities assumed in acquisitions 0
New asset retirement obligations 4,093
Accretion 3,915
Changes in estimates recorded to consolidated statement of operations (134)
Changes in estimates recorded to consolidated balance sheet 46
Expenditures (8,728)
Currency translation and other (81)
Ending balance 58,554
Non-Landfill Retirement Liability  
Changes to post-closure liabilities  
Beginning balance 59,157
Liabilities assumed in acquisitions 1,845
New asset retirement obligations 0
Accretion 3,305
Changes in estimates recorded to consolidated statement of operations (120)
Changes in estimates recorded to consolidated balance sheet 39
Expenditures (3,128)
Currency translation and other (74)
Ending balance $ 61,024