ACQUISITIONS AND DIVESTITURES - Additional Information (Detail) (USD $)	3 Months Ended			9 Months Ended																		3 Months Ended		9 Months Ended	3 Months Ended									3 Months Ended														3 Months Ended		9 Months Ended									0 Months Ended
	Sep. 30, 2014 Entity	Jun. 30, 2014 Entity	Mar. 31, 2014 Entity	Sep. 30, 2014 Entity	Sep. 30, 2013	Sep. 30, 2014 Customer relationships Minimum	Sep. 30, 2014 Customer relationships Maximum	Sep. 30, 2014 Tradenames Minimum	Sep. 30, 2014 Tradenames Maximum	Sep. 30, 2014 Technology	Sep. 30, 2014 United States Entity	Sep. 30, 2014 Brazil Entity	Sep. 30, 2014 Canada Entity	Sep. 30, 2014 Chile Entity	Sep. 30, 2014 Japan Entity	Sep. 30, 2014 Portugal Entity	Sep. 30, 2014 Romania Entity	Sep. 30, 2014 South Korea Entity	Sep. 30, 2014 Spain Entity	Sep. 30, 2014 United Kingdom Entity	Sep. 30, 2014 United States	Mar. 31, 2014 United States Regulated and Compliance Solutions [Member] Entity	Mar. 31, 2014 United States Communication Solutions [Member] Entity	Sep. 30, 2014 International	Jun. 30, 2014 International Regulated and Compliance Solutions [Member] Brazil Entity	Sep. 30, 2014 International Regulated and Compliance Solutions [Member] Portugal Entity	Jun. 30, 2014 International Regulated and Compliance Solutions [Member] Portugal Entity	Mar. 31, 2014 International Regulated and Compliance Solutions [Member] Portugal Entity	Jun. 30, 2014 International Regulated and Compliance Solutions [Member] South Korea Entity	Sep. 30, 2014 International Regulated and Compliance Solutions [Member] Spain Entity	Jun. 30, 2014 International Regulated and Compliance Solutions [Member] Spain Entity	Jun. 30, 2014 International Regulated and Compliance Solutions [Member] United Kingdom Entity	Sep. 30, 2014 International Regulated and Compliance Solutions [Member] United Kingdom	Sep. 30, 2014 International Communication Solutions [Member] Canada Entity	Jun. 30, 2014 International Communication Solutions [Member] Canada Entity	Jun. 30, 2014 Acquisition One [Member] United States Regulated and Compliance Solutions [Member] Entity	Sep. 30, 2014 Acquisition One [Member] International Regulated and Compliance Solutions [Member] Chile Entity	Jun. 30, 2014 Acquisition One [Member] International Regulated and Compliance Solutions [Member] Chile Entity	Sep. 30, 2014 Acquisition One [Member] International Regulated and Compliance Solutions [Member] Japan Entity	Sep. 30, 2014 Acquisition One [Member] International Regulated and Compliance Solutions [Member] Romania Entity	Jun. 30, 2014 Acquisition One [Member] International Regulated and Compliance Solutions [Member] Romania Entity	Sep. 30, 2014 Acquisition One [Member] International Regulated and Compliance Solutions [Member] Spain Entity	Sep. 30, 2014 Acquisition One [Member] International Regulated and Compliance Solutions [Member] United Kingdom Entity	Sep. 30, 2014 Acquisition Two [Member] United States Regulated and Compliance Solutions [Member] Entity	Jun. 30, 2014 Acquisition Two [Member] United States Regulated and Compliance Solutions [Member] Entity	Jun. 30, 2014 Acquisition Two [Member] International Regulated and Compliance Solutions [Member] Chile	Jun. 30, 2014 Acquisition Two [Member] International Regulated and Compliance Solutions [Member] Romania	Sep. 30, 2014 Acquisition Three [Member] United States Communication Solutions [Member] Entity	Jun. 30, 2014 Acquisition Three [Member] United States Communication Solutions [Member] Entity	Sep. 30, 2014 Acquisitions Year 2014 [Member]	Sep. 30, 2014 Acquisitions Year 2014 [Member] Operating permits	Sep. 30, 2014 Acquisitions Year 2014 [Member] Customer relationships	Sep. 30, 2014 Acquisitions Year 2014 [Member] Customer relationships Minimum	Sep. 30, 2014 Acquisitions Year 2014 [Member] Customer relationships Maximum	Sep. 30, 2014 Acquisitions Year 2014 [Member] Tradenames	Sep. 30, 2014 Acquisitions Year 2014 [Member] Tradenames Maximum	Sep. 30, 2014 Acquisitions Year 2014 [Member] Technology	Sep. 30, 2014 Acquisitions Year 2014 [Member] Technology Maximum	Apr. 22, 2014 PSC Environmental Services, LLC	Apr. 22, 2014 PSC Environmental Services, LLC	Sep. 30, 2014 Shiraishi-Sogyo Co. Ltd. [Member]
Significant Acquisitions and Disposals [Line Items]
Number of acquisitions	16	14	5	35							12	1	2	3	2	5	3	1	3	3		1	1		1	1	1	3	1	1	1	1		1	1	1	1	1	2	1	1	1	2	5	2			1	1
Business acquisition, ownership percentage acquired																										100.00%	100.00%	100.00%	75.50%	100.00%			100.00%	100.00%	100.00%	100.00%	100.00%	100.00%	100.00%							90.00%	100.00%													100.00%	100.00%
Net increase in Goodwill				$ 202,400,000																	$ 176,200,000			$ 26,200,000
Tax deductible Goodwill amount	99,000,000			99,000,000
Net increase in Intangible Assets																																																		242,800,000	145,300,000	97,000,000			200,000		300,000
Finite-lived intangible assets, useful life						10 years	40 years	10 years	40 years	5 years																																											10 years	40 years		15 years		10 years
Acquisition related expenses				10,700,000	6,200,000
Total consideration				429,755,000	220,432,000																																																						284,000,000
Consideration, cash paid				328,811,000	131,902,000																																																						248,200,000
Consideration, note issued				78,325,000	56,602,000																																																						30,000,000
Contingent consideration				16,495,000	3,378,000																																																						5,800,000
Note term																																																											2 years
Liabilities assumed																																																												30,000,000
Note payable to Stericycle assumed																																																													15,700,000
Bank debt assumed																																																													4,700,000
Pro forma revenues from the aggregate acquisitions																																																		241,000,000
Impact to revenues of acquisitions																																																		$ 131,700,000