ACQUISITIONS, DIVESTITURES, AND ASSETS HELD FOR SALE - Summary of Acquisitions Location, Services and Type (Detail)	9 Months Ended
	Sep. 30, 2017 Entity
Business Acquisition [Line Items]
Number of acquisitions	24
Acquisitions of Selected Assets and Liabilities
Business Acquisition [Line Items]
Number of acquisitions	21
Acquisitions of Stock
Business Acquisition [Line Items]
Number of acquisitions	3
Regulated Waste
Business Acquisition [Line Items]
Number of acquisitions	7
Secure Information Destruction
Business Acquisition [Line Items]
Number of acquisitions	16
Communication Services
Business Acquisition [Line Items]
Number of acquisitions	1
United States
Business Acquisition [Line Items]
Number of acquisitions	16
United States | Acquisitions of Selected Assets and Liabilities
Business Acquisition [Line Items]
Number of acquisitions	16
United States | Acquisitions of Stock
Business Acquisition [Line Items]
Number of acquisitions	0
United States | Regulated Waste
Business Acquisition [Line Items]
Number of acquisitions	2
United States | Secure Information Destruction
Business Acquisition [Line Items]
Number of acquisitions	13
United States | Communication Services
Business Acquisition [Line Items]
Number of acquisitions	1
Republic of Korea
Business Acquisition [Line Items]
Number of acquisitions	2
Republic of Korea | Acquisitions of Selected Assets and Liabilities
Business Acquisition [Line Items]
Number of acquisitions	2
Republic of Korea | Acquisitions of Stock
Business Acquisition [Line Items]
Number of acquisitions	0
Republic of Korea | Regulated Waste
Business Acquisition [Line Items]
Number of acquisitions	2
Canada
Business Acquisition [Line Items]
Number of acquisitions	1
Canada | Acquisitions of Stock
Business Acquisition [Line Items]
Number of acquisitions	1
Canada | Secure Information Destruction
Business Acquisition [Line Items]
Number of acquisitions	1
France
Business Acquisition [Line Items]
Number of acquisitions	1
France | Acquisitions of Selected Assets and Liabilities
Business Acquisition [Line Items]
Number of acquisitions	1
France | Acquisitions of Stock
Business Acquisition [Line Items]
Number of acquisitions	0
France | Secure Information Destruction
Business Acquisition [Line Items]
Number of acquisitions	1
Netherlands
Business Acquisition [Line Items]
Number of acquisitions	2
Netherlands | Acquisitions of Selected Assets and Liabilities
Business Acquisition [Line Items]
Number of acquisitions	2
Netherlands | Acquisitions of Stock
Business Acquisition [Line Items]
Number of acquisitions	0
Netherlands | Regulated Waste
Business Acquisition [Line Items]
Number of acquisitions	1
Netherlands | Secure Information Destruction
Business Acquisition [Line Items]
Number of acquisitions	1
Portugal
Business Acquisition [Line Items]
Number of acquisitions	1
Portugal | Acquisitions of Stock
Business Acquisition [Line Items]
Number of acquisitions	1
Portugal | Regulated Waste
Business Acquisition [Line Items]
Number of acquisitions	1
Spain
Business Acquisition [Line Items]
Number of acquisitions	1
Spain | Acquisitions of Stock
Business Acquisition [Line Items]
Number of acquisitions	1
Spain | Regulated Waste
Business Acquisition [Line Items]
Number of acquisitions	1