Commitments and Contingencies (Details Textuals) (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2011 Years Segments RetirementPlans Employees Claims CubicYards Landfills	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008	Sep. 09, 2010 Plaintiffs	Jun. 30, 2010	Dec. 23, 2009 Plaintiffs	Oct. 13, 2009 Plaintiffs Claims	Oct. 08, 2008 Plaintiffs	Sep. 24, 2008	Jul. 03, 2008	Aug. 17, 2007
Site Contingency [Line Items]
Punitive damages											43.1
Commitments and Contingencies (Textuals)
Remediation liability till March 31, 2011	$ 555,400,000	$ 552,100,000	$ 554,100,000			$ 549,300,000
Total damage											46,600,000
Losses accrued related to legal proceedings	111,000,000
Rate of post-judgment interest		4.00%	5.00%	8.00%
Additional plaintiffs approximately filed suit in the Circuit Court							2,400
Loss contingency class action lawsuit plaintiff criteria for Livingston matter								The court granted class certification for all those living within a six mile radius of the CECOS site between the years 1977 and 1990.
Maximum amount of post-judgment interest in middle of 2012	9,000,000
Current employees participants in multi-employer plans	Approximately 20%
Counts of amended complaint	3
Loss contingency additional potential liability	110,000,000
Pre-judgment interest										300,000
Attorney fees and litigation costs										1,100,000
Number of employees unlawfully fired	3
Contribution in multi-employer pension plans (in number)	28
Plaintiff alleges unlawfully fired in retaliation												Plaintiff alleges that he was unlawfully fired in retaliation for refusing to discharge or demote three employees who were all over 50 years old.
Number of plaintiffs filed cases in the Tuscarawas County Ohio Court of Common Pleas					600			82	700
Actions consolidated in an order issued by court								2
Amount of compensatory damages as relief requested, in excess of	25,000
Punitive damages											43.1
Reduction in Punitive damages	7,000,000
Countywide Landfill [Member]
Site Contingency [Line Items]
Redemption loss range Minimum	55,000,000
Redemption loss range Maximum	76,000,000
Damages sought	The relief requested on behalf of each plaintiff in the consolidated action is: (1) an award of compensatory damages according to proof in an amount in excess of $25,000 for each of the three counts of the amended complaint; (2) an award of punitive damages in the amount of two times compensatory damages, pursuant to applicable statute, or in such amount as may be awarded at trial for each of the three counts of the amended complaint; (3) costs for medical screening and monitoring of each plaintiff; (4) interest on the damages according to law; (5) costs and disbursements of the lawsuit; (6) reasonable fees for attorneys and expert witnesses; and (7) any other and further relief as the court deems just, proper and equitable. Plaintiffs filed an amended consolidated complaint on September 9, 2010, which no longer asserts a claim for medical monitoring.
Commitments and Contingencies (Textuals)
Damages sought	The relief requested on behalf of each plaintiff in the consolidated action is: (1) an award of compensatory damages according to proof in an amount in excess of $25,000 for each of the three counts of the amended complaint; (2) an award of punitive damages in the amount of two times compensatory damages, pursuant to applicable statute, or in such amount as may be awarded at trial for each of the three counts of the amended complaint; (3) costs for medical screening and monitoring of each plaintiff; (4) interest on the damages according to law; (5) costs and disbursements of the lawsuit; (6) reasonable fees for attorneys and expert witnesses; and (7) any other and further relief as the court deems just, proper and equitable. Plaintiffs filed an amended consolidated complaint on September 9, 2010, which no longer asserts a claim for medical monitoring.
Congress Development Landfill [Member]
Site Contingency [Line Items]
Redemption loss range Minimum	44,000,000
Redemption loss range Maximum	$ 144,000,000
Damages sought	In excess of $50 million
Punitive damages							In excess of $50 million
Commitments and Contingencies (Textuals)
Damages sought	In excess of $50 million
Punitive damages							In excess of $50 million