SIGNIFICANT ACCOUNTING POLICIES LANDFILL ASSETS (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 CubicYards Landfill_Sites Expansions service_locations	Dec. 31, 2012 CubicYards	Dec. 31, 2011 CubicYards
Property, Plant and Equipment [Line Items]
Application Approvals	5 years
Number of Expansions	2
Number of Service Locations	2
Percentage of Airspace Remaining	19.10%
Landfill Sites	11
Remaining Highly Probable Airspace	29,323,000
Permitted, But Not Highly Probable Airspace	0	0
Remaining Airspace Capacity [Roll Forward]
Remaining capacity, beginning of period	29,643,000	27,557,000	28,557,000
Addition of highly probable airspace, net	1,218,000	3,598,000	102,000
Consumed	(1,538,000)	(1,512,000)	(1,102,000)
Remaining capacity, end of period	29,323,000	29,643,000	27,557,000
Landfill Final Closure and Post-Closure Liabilities	$ 27.6	$ 26.7
Regulatory Post-Closure Period for Landfill	30 years
Inflation rate (as a percent)	1.02%
Non-landfill Closure and Post-Closure Liabilities	19.5	17.4
Permitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	23,735,000
Unpermitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	5,588,000
Landfill assets
Property, Plant and Equipment [Line Items]
Amortization	$ 16.8	$ 17.3	$ 10.4
Non-commercial landfills
Property, Plant and Equipment [Line Items]
Landfill Sites	2
Minimum
Remaining Airspace Capacity [Roll Forward]
Non-landfill Closure and Post-Closure Liabilities (in years)	10 years
Maximum
Remaining Airspace Capacity [Roll Forward]
Non-landfill Closure and Post-Closure Liabilities (in years)	30 years
Altair | Texas
Property, Plant and Equipment [Line Items]
Remaining Lives (Years)	12 years
Remaining Highly Probable Airspace	752,000
Altair | Texas | Permitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	752,000
Altair | Texas | Unpermitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	0
Buttonwillow | California
Property, Plant and Equipment [Line Items]
Remaining Lives (Years)	27 years
Remaining Highly Probable Airspace	7,701,000
Buttonwillow | California | Permitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	7,701,000
Buttonwillow | California | Unpermitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	0
Deer Park | Texas
Property, Plant and Equipment [Line Items]
Remaining Lives (Years)	9 years
Remaining Highly Probable Airspace	342,000
Deer Park | Texas | Permitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	342,000
Deer Park | Texas | Unpermitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	0
Deer Trail | Colorado
Property, Plant and Equipment [Line Items]
Remaining Lives (Years)	41 years
Remaining Highly Probable Airspace	2,061,000
Deer Trail | Colorado | Permitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	2,061,000
Deer Trail | Colorado | Unpermitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	0
Grassy Mountain | Utah
Property, Plant and Equipment [Line Items]
Remaining Lives (Years)	29 years
Remaining Highly Probable Airspace	2,058,000
Grassy Mountain | Utah | Permitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	2,058,000
Grassy Mountain | Utah | Unpermitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	0
Kimball | Nebraska
Property, Plant and Equipment [Line Items]
Remaining Lives (Years)	10 years
Remaining Highly Probable Airspace	281,000
Kimball | Nebraska | Permitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	281,000
Kimball | Nebraska | Unpermitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	0
Lambton | Ontario
Property, Plant and Equipment [Line Items]
Remaining Lives (Years)	49 years
Remaining Highly Probable Airspace	4,828,000
Lambton | Ontario | Permitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	120,000
Lambton | Ontario | Unpermitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	4,708,000
Lone Mountain | Oklahoma
Property, Plant and Equipment [Line Items]
Remaining Lives (Years)	17 years
Remaining Highly Probable Airspace	2,769,000
Lone Mountain | Oklahoma | Permitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	2,769,000
Lone Mountain | Oklahoma | Unpermitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	0
Ryley | Alberta
Property, Plant and Equipment [Line Items]
Remaining Lives (Years)	11 years
Remaining Highly Probable Airspace	1,792,000
Ryley | Alberta | Permitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	912,000
Ryley | Alberta | Unpermitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	880,000
Sawyer | North Dakota
Property, Plant and Equipment [Line Items]
Remaining Lives (Years)	16 years
Remaining Highly Probable Airspace	4,007,000
Sawyer | North Dakota | Permitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	4,007,000
Sawyer | North Dakota | Unpermitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	0
Westmorland | California
Property, Plant and Equipment [Line Items]
Remaining Lives (Years)	64 years
Remaining Highly Probable Airspace	2,732,000
Westmorland | California | Permitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	2,732,000
Westmorland | California | Unpermitted
Property, Plant and Equipment [Line Items]
Remaining Highly Probable Airspace	0