Landfill and Environmental Remediation Liabilities (Tables)

9 Months Ended

Sep. 30, 2017

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):

	September 30, 2017						December 31, 2016
			Environmental						Environmental
	Landfill		Remediation		Total		Landfill		Remediation		Total
Current (in accrued liabilities)	$	140	$	23	$	163	$	119	$	28	$	147
Long-term		1,500		227		1,727		1,457		218		1,675
	$	1,640	$	250	$	1,890	$	1,576	$	246	$	1,822

Changes to Landfill and Environmental Remediation Liabilities

The changes to landfill and environmental remediation liabilities for the nine months ended September 30, 2017 are reflected in the table below (in millions):

			Environmental
	Landfill		Remediation
December 31, 2016	$	1,576	$	246
Obligations incurred and capitalized		51		—
Obligations settled		(74)		(14)
Interest accretion		68		2
Revisions in estimates and interest rate assumptions (a)		14		16
Acquisitions, divestitures and other adjustments		5		—
September 30, 2017	$	1,640	$	250