Landfill Liabilities (Tables)

3 Months Ended

Mar. 31, 2020

Asset Retirement Obligation Disclosure [Abstract]

Summary of Liabilities for Final Closure and Post-Closure Costs

Liabilities for final closure and post-closure costs for the year ended December 31, 2019 and for the three months ended March 31, 2020 are shown in the table below:

Balance at December 31, 2018	$	248.0
Increase in retirement obligation	11.0
Accretion of closure and post-closure costs	18.0
Asset retirement obligation adjustments	6.9
Costs incurred	(19.7		)
Balance at December 31, 2019	264.2
Increase in retirement obligation	2.5
Accretion of closure and post-closure costs	4.5
Costs incurred	(1.5		)
Balance at March 31, 2020	269.7
Less: Current portion	(16.6		)
	$	253.1