ACQUISITION - Summary of Purchase Price Allocation (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Business Acquisition [Line Items]
Goodwill	$ 2,758.0	$ 2,755.6
Southeastern U.S. Regulated Waste
Business Acquisition [Line Items]
Fixed assets	1.2
Intangibles (Customer Lists)	6.1
Goodwill	8.2
Other assets and liabilities, net	0.3
Total purchase price	$ 15.8

Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Assets (Liabilities), Net

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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