CLOSURE AND POST-CLOSURE LIABILITIES - Changes in Post-Closure Liabilities (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) landfill_site	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) landfill_site
Changes to post-closure liabilities
Balance at the beginning of the period	$ 99,103	$ 87,926
Liabilities assumed in acquisitions	55	1,446
Measurement period adjustments from prior period acquisitions	1,148
New asset retirement obligations	3,743	2,443
Accretion	8,752	7,357
Changes in estimates recorded to consolidated statement of operations	6,775	2,683
Changes in estimates recorded to consolidated balance sheet	4,961	3,712
Expenditures	(5,151)	(6,602)
Currency translation and other	(585)	138
Balance at the end of the period	118,801	99,103	$ 87,926
Number of landfill sites closed during period | landfill_site			2
Changes in estimates recorded to the consolidated statement of operations, related to facility closure	$ 600	2,300
Number of non-landfill site closure expected | landfill_site	2
Landfill Retirement Liability
Changes to post-closure liabilities
Balance at the beginning of the period	$ 53,425	48,412
Liabilities assumed in acquisitions	0	0
Measurement period adjustments from prior period acquisitions	0
New asset retirement obligations	3,743	2,443
Accretion	4,605	3,655
Changes in estimates recorded to consolidated statement of operations	1,063	2,287
Changes in estimates recorded to consolidated balance sheet	3,219	2,297
Expenditures	(3,373)	(5,818)
Currency translation and other	(431)	149
Balance at the end of the period	62,251	53,425	$ 48,412
Non-Landfill Retirement Liability
Changes to post-closure liabilities
Balance at the beginning of the period	45,678	39,514
Liabilities assumed in acquisitions	55	1,446
Measurement period adjustments from prior period acquisitions	1,148
New asset retirement obligations	0	0
Accretion	4,147	3,702
Changes in estimates recorded to consolidated statement of operations	5,712	396
Changes in estimates recorded to consolidated balance sheet	1,742	1,415
Expenditures	(1,778)	(784)
Currency translation and other	(154)	(11)
Balance at the end of the period	$ 56,550	$ 45,678	$ 39,514