DESCRIPTION OF BUSINESS (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 Customer	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of customers - over	600,000
Increase in cash and cash equivalents	$ 22,236	$ 67,167	$ 34,660	$ 22,511
Increase in other current liabilities	61,599	50,387
Reclassifications, Other [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Increase in cash and cash equivalents		5,200
Increase in other current liabilities		$ 5,200
United States
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of employees	9,969
International [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of employees	8,687
Workforce Subject to Collective Bargaining Arrangements [Member] | United States
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of employees	456
Workforce Subject to Collective Bargaining Arrangements [Member] | International [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of employees	2,209
Processing Facilities [Member] | United States
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of processing facilities	64
Processing Facilities [Member] | International [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of processing facilities	117
Transfer and Collection Sites [Member] | United States
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of sites	137
Transfer and Collection Sites [Member] | International [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of sites	77
Sales and Administrative Sites [Member] | United States
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of sites	19
Sales and Administrative Sites [Member] | International [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of sites	45
Other Service Facilities [Member] | United States
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of service facilities	51
Other Service Facilities [Member] | International [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of service facilities	46
Landfill [Member] | International [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of sites	2