REVENUES FROM CONTRACTS WITH CUSTOMERS (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Schedule of Revenues Disaggregated by Service, Primary Geographical Regions and Timing of Revenue Recognition

In millions
	Year Ended Year Ended December 31,
	2021		2020		2019
Revenue by Service
Regulated Waste and Compliance Services	$	1,854.0	$	1,930.2	$	2,407.0
Secure Information Destruction Services	792.9		745.3		901.9
Total Revenues	$	2,646.9	$	2,675.5	$	3,308.9
North America
Regulated Waste and Compliance Services	$	1,457.5	$	1,541.9	$	1,970.4
Secure Information Destruction Services	679.0		647.3		769.5
Total North America Segment	$	2,136.5	$	2,189.2	$	2,739.9
International
Regulated Waste and Compliance Services	$	396.5	$	388.3	$	436.6
Secure Information Destruction Services	113.9		98.0		132.4
Total International Segment	$	510.4	$	486.3	$	569.0

Schedule of Total Contract Acquisition Costs

Total contract acquisition costs, net of accumulated amortization, were classified as follows as of December 31:

In millions
	2021		2020
Other current assets	$	12.4	$	11.1
Other assets	34.3		31.1
Total contract acquisition costs	$	46.7	$	42.2