ACQUISITION (Detail) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Jan. 31, 2024	Jun. 30, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Cash			$ 0.0	$ 0.0	$ 10.5
Goodwill			$ 2,755.6	$ 2,784.9	$ 2,815.7
Southeastern U.S. Regulated Waste | Subsequent event
Business Acquisition [Line Items]
Purchase price consideration	$ 16.0
Midwest- Based Regulated Waste Business
Business Acquisition [Line Items]
Purchase price consideration		$ 42.8
Cash		10.5
Promissory notes		21.3
Deferred consideration		11.0
Goodwill		23.7
Decrease in intangible assets		2.5
Finite-lived intangibles acquired		0.2
Purchase accounting adjustments		1.7
Midwest- Based Regulated Waste Business | Customer relationships
Business Acquisition [Line Items]
Finite-lived intangibles acquired		$ 17.5