Landfill and Environmental Remediation Liabilities (Tables)

3 Months Ended

Mar. 31, 2020

Landfill and Environmental Remediation Liabilities

Liabilities for Landfill and Environmental Remediation Costs

Liabilities for landfill and environmental remediation costs are presented in the table below (in millions):

	March 31, 2020						December 31, 2019
			Environmental						Environmental
	Landfill		Remediation		Total		Landfill		Remediation		Total
Current (in accrued liabilities)	$	110	$	27	$	137	$	138	$	27	$	165
Long-term		1,770		221		1,991		1,717		213		1,930
	$	1,880	$	248	$	2,128	$	1,855	$	240	$	2,095

Changes to Landfill and Environmental Remediation Liabilities

The changes to landfill and environmental remediation liabilities for the three months ended March 31, 2020 are reflected in the table below (in millions):

			Environmental
	Landfill		Remediation
December 31, 2019	$	1,855	$	240
Obligations incurred and capitalized		20		—
Obligations settled		(18)		(5)
Interest accretion		24		1
Revisions in estimates and interest rate assumptions (a)		3		12
Acquisitions, divestitures and other adjustments		(4)		—
March 31, 2020	$	1,880	$	248

(a) The amount reported for our environmental remediation liabilities includes an increase of $12 million due to a decrease in the risk-free discount rate used to measure our liabilities from 1.75% at December 31, 2019 to 0.75% at March 31, 2020.