Note 10—Accounts payable and accrued liabilities:

	December 31,
	2014		2015
	(In millions)
Accounts payable:
Kronos	$	121.4	$	96.1
CompX		3.9		2.7
WCS		1.4		1.3
BMI/LandWell		7.0		2.1
NL		2.3		1.9
Other		.2		.7
Total	$	136.2	$	104.8
Current accrued liabilities:
Employee benefits	$	34.6	$	24.7
Accrued sales discounts and rebates		23.0		23.9
Deferred income		19.8		21.8
Environmental remediation and related costs		10.2		11.7
Accrued workforce reduction costs		—		5.3
Interest rate swap contract		—		3.3
Other		40.4		30.4
Total	$	128.0	$	121.1
Noncurrent accrued liabilities:
Reserve for uncertain tax positions	$	34.1	$	32.9
Asset retirement obligations		27.2		28.8
Deferred income		18.9		20.2
Employee benefits		8.1		7.1
Insurance claims and expenses		9.5		9.6
Deferred payment obligation		8.5		8.8
Other		6.4		7.2
Total	$	112.7	$	114.6

The risks associated with certain of our accrued insurance claims and expenses have been reinsured, and the related IBNR receivables are recognized as noncurrent assets to the extent the related liability is classified as a noncurrent liability. See Note 7. Our reserve for uncertain tax positions is discussed in Note 12.

Our asset retirement obligations include amounts related to the closure and post-closure obligations associated with our Waste Management Segment’s facility in West Texas. We recognized accretion expense of $1.7 million in 2013, $1.8 million in 2014 and $2.0 million in 2015 on the closure and post-closure obligations. We are required to provide certain financial assurance to Texas government agencies with respect to the decommissioning obligations related to such facility, as more fully described in Note 17. Certain of our affiliates have provided or assisted us in providing such financial assurance, as discussed in Note 16.

Estimates of the ultimate cost to be incurred to settle our closure and post closure obligation require a number of assumptions, are inherently difficult to develop and the ultimate outcome may differ materially from current estimates. However, we believe our experience in the environmental services business provides a reasonable basis for estimating such costs. As additional information becomes available, cost estimates will be adjusted as necessary. It is possible that technological, regulatory or enforcement developments, the results of studies or other factors could necessitate the recording of additional liabilities which could be material.

The deferred payment obligation relates to Tremont and is discussed in Notes 3 and 16.