Landfill and Environmental Remediation Liabilities (Tables)

6 Months Ended

Jun. 30, 2021

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):

	June 30, 2021						December 31, 2020
			Environmental						Environmental
	Landfill		Remediation		Total		Landfill		Remediation		Total
Current (in accrued liabilities)	$	129	$	26	$	155	$	138	$	26	$	164
Long-term		2,105		194		2,299		2,018		204		2,222
	$	2,234	$	220	$	2,454	$	2,156	$	230	$	2,386

Changes to Landfill and Environmental Remediation Liabilities

The changes to landfill and environmental remediation liabilities for the six months ended June 30, 2021 are reflected in the table below (in millions):

			Environmental
	Landfill		Remediation
December 31, 2020	$	2,156	$	230
Obligations incurred and capitalized		57		—
Obligations settled		(44)		(9)
Interest accretion		53		1
Revisions in estimates and interest rate assumptions		11		(2)
Acquisitions, divestitures and other adjustments		1		—
June 30, 2021	$	2,234	$	220