XML 57 R11.htm IDEA: XBRL DOCUMENT

SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
SIGNIFICANT ACCOUNTING POLICIES	Mar. 31, 2020
Accounting Policies [Abstract]
SIGNIFICANT ACCOUNTING POLICIES	SIGNIFICANT ACCOUNTING POLICIES The Company's significant accounting policies are described in Note 2, "Significant Accounting Policies," in the Company's Annual Report on Form 10-K for the year ended December 31, 2019. There have been no material changes in these policies or their application except for the changes described below. Landfill Accounting Landfill capacity - As of March 31, 2020, the Company initiated a plan to close one of the Company's commercial landfill sites. The planned closure will nominally reduce the Company's remaining highly probable airspace. See Note 9, "Closure and Post-Closure Liabilities," for additional information.