RESTRUCTURING, DIVESTITURES, AND IMPAIRMENTS (Tables)

12 Months Ended

Dec. 31, 2021

Restructuring and Related Activities [Abstract]

Summary of Impairments and Divestiture Losses, Net of (Gains)

Stericycle recognized the following Divestiture (gains) losses, net in the Consolidated Statements of Loss:

In millions
	Year Ended December 31,
	2021		2020		2019
North America Segment
Canada Environmental Solutions operations	$	(12.6)	$	—	$	—
Domestic Environmental Solutions operations	—		53.8		—
CRS businesses	—		(38.8)		45.5
Total North America charges, net	(12.6)		15.0		45.5
International Segment
CRS businesses	—		(4.0)		—
Japan RWCS operations	10.9		—		—
Argentina operations	—		112.4		—
Mexico RWCS operations	—		(4.9)		43.2
Chile RWCS operations	—		5.1		19.0
U.K. businesses	—		—		(4.7)
Total International charges, net	10.9		108.6		57.5
Divestiture (gains) losses, net	$	(1.7)	$	123.6	$	103.0

Schedule of Impairments

Impairments:

In millions
	Year Ended December 31,
	2021		2020		2019
Impairments
Operational Optimization - COR	$	—	$	—	$	5.6
Operational Optimization - SG&A	—		2.8		1.7
Asset Impairment - COR	—		6.8		5.2
Asset Impairment - SG&A	6.7		8.7		16.9
Total Impairments	$	6.7	$	18.3	$	29.4
North America
Operational Optimization - COR	$	—	$	—	$	2.0
Operational Optimization - SG&A	—		—		0.4
Asset Impairment - COR	—		6.1		1.6
Asset Impairment - SG&A	2.1		4.2		0.5
Total North America Segment	$	2.1	$	10.3	$	4.5
International
Operational Optimization - COR	$	—	$	—	$	3.6
Operational Optimization - SG&A	—		2.8		1.3
Asset Impairment - COR	—		0.7		3.6
Asset Impairment - SG&A	4.6		4.5		16.4
Total International Segment	$	4.6	$	8.0	$	24.9