2.	Landfill and Environmental Remediation Liabilities

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


	September 30, 2015						December 31, 2014
	Landfill		Environmental Remediation		Total		Landfill		Environmental Remediation		Total
Current (in accrued liabilities)	$	103	$	41	$	144	$	104	$	43	$	147
Long-term		1,417		188		1,605		1,339		192		1,531

	$	1,520	$	229	$	1,749	$	1,443	$	235	$	1,678

The changes to landfill and environmental remediation liabilities for the year ended December 31, 2014 and the nine months ended September 30, 2015 are reflected in the table below (in millions):


	Landfill			Environmental Remediation
December 31, 2013	$	1,421		$	227
Obligations incurred and capitalized		54			—
Obligations settled		(69	)		(21	)
Interest accretion		88			5
Revisions in estimates and interest rate assumptions		(9	)		25
Acquisitions, divestitures and other adjustments(a)		(42	)		(1	)

December 31, 2014		1,443			235
Obligations incurred and capitalized		46			—
Obligations settled		(50	)		(15	)
Interest accretion		66			3
Revisions in estimates and interest rate assumptions		6			7
Acquisitions, divestitures and other adjustments(b)		9			(1	)

September 30, 2015	$	1,520		$	229

(a)	The amounts reported for our 2014 landfill liabilities include reductions of $25 million for divestitures, including the divestiture of our Wheelabrator business. See Note 9 for discussion of our divestitures.

(b)	The amounts reported for our 2015 landfill liabilities include an increase of $18 million associated with the acquisition of Deffenbaugh Disposal, Inc. (“Deffenbaugh”). See Note 9 for discussion of our acquisition.

At several of our landfills, we provide financial assurance by depositing cash into restricted trust funds or escrow accounts for purposes of settling final capping, closure, post-closure and environmental remediation obligations. Generally, these trust funds are established to comply with statutory requirements and operating agreements. See Note 15 for additional information related to these trusts.