Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Financial Instruments Municipal solid waste service and other service contracts, permits and licenses to operate transfer stations, landfills and recycling facilities may require performance or surety bonds, letters of credit or other means of financial assurance to secure contractual performance. To secure its obligations, the Company has provided customers, various regulatory authorities and the Company’s insurer with such bonds totaling to approximately $867.8 and $774.0 as of December 31, 2019 and 2018, respectively. The majority of these obligations expire each year and are automatically renewed. Additionally, letters of credit have been issued to fulfill such obligations and are included in the total letters of credit outstanding disclosed in Note 13, Long-Term Debt, in the notes to the consolidated financial statements herein. The Company has an obligation as part of the purchase of one of its C&D landfills for payments of 6% of net revenue generated from the landfill that began at the commencement of landfill operations and continues through the life of the landfill. Landfill Remediation In fiscal 2018, the Company observed surface anomalies in specific areas of a landfill and received a proposed consent order, from a state environmental regulatory agency, outlining conditions required to be met at the landfill. The consent order was finalized during fiscal 2019 and the Company was assessed a penalty of $0.2. Based on the Company's best estimate during fiscal 2018, the Company recorded remediation expense of $16.2 for required on-site engineering enhancements related to leachate and gas infrastructure at the landfill. These accruals included costs for an enhanced de-watering system and the associated removal, treatment, and disposal of leachate at the landfill. Based on updated engineering studies completed in May 2019, the expected costs and the time-frame related to this matter increased therefore the Company recorded additional remediation expense of $9.6 during the second quarter of fiscal 2019. As of December 31, 2019, $13.7 of expenditures related to the remediation accrual estimates have been incurred and $12.9 remains on the consolidated balance sheet which are expected to be incurred through 2023. This amount could increase or decrease as a result of actual costs incurred to completion. Although it is reasonably possible this amount could change as a result of actual cost incurred to completion, the Company is unable to estimate a range of potential exposure due to the uncertainty of the remediation efforts required due to the early stage of the process being undertaken. Litigation and Other Matters The Company and certain of its subsidiaries have been named as defendants in various class action suits. Past suits have been brought against the Company and certain of its subsidiaries in the following jurisdictions: (i) 2009, Circuit Court of Macon County, Alabama (the "Tiger Pride" suit), (ii) 2011, Duval County, Florida (the "JWG" suit), (iii) 2013, Quitman County, Georgia and Barbour County, Alabama (the "Bach" suit), (iv) 2014, Chester County, Pennsylvania (the "Flaccus" suit), and (v) 2015, Gwinnett County, Georgia (the "Sims" suit). The plaintiffs in these cases primarily allege that the defendants charged improper charges (fuel, administrative and environmental charges) that were in breach of the plaintiffs' service agreements with the Company and seek damages for unspecified amounts. The 2013 Quitman County, Georgia complaint was dismissed in March 2014. The Company has reached a settlement for $9.0 (inclusive of plaintiff attorneys’ fees and costs), resolving the Tiger Pride, JWG, Bach and Sims suits. As of December 31, 2019, all of this settlement has been paid. The Flaccus suit has not been settled and is still pending. Given the inherent uncertainties of litigation, including the early stage of the Flaccus case, the unknown size of any potential class, and legal and factual issues in dispute, the outcome of this case cannot be predicted and a range of loss, if any, cannot currently be estimated. In February 2017, a waste slide occurred in one cell at the Company’s Greentree Landfill in Kersey, Pennsylvania. During fiscal 2018 and 2017, the Company recorded a charge in operating expenses of $0.1 and $11.1, respectively. These charges were recorded to adjust the reserve related to this matter to the remaining probable costs to relocate displaced material and restore infrastructure, net of insurance recoveries. The Company does not expect to incur further benefits or charges related to this matter. The Company is subject to various other proceedings, lawsuits, disputes and claims and regulatory investigations arising in the ordinary course of its business. Many of these actions raise complex factual and legal issues and are subject to uncertainties. Actions filed against the Company include commercial, customer, and employment-related claims. The plaintiffs in some actions seek unspecified damages or injunctive relief, or both. These actions are in various procedural stages, and some are covered in part by insurance. Although the Company cannot predict the ultimate outcome and the range of loss cannot be currently estimated, the Company does not believe that the eventual outcome of any such action could have a material adverse effect on its business, financial condition, results of operations or cash flows.