9. Other Current Liabilities and Other Liabilities

The table below presents the components of other current liabilities.

	March 31, 2017		December 31, 2016
	(in millions)
Other Current Liabilities:
Accrued product warranty costs	$	80	$	68
Estimated costs in excess of estimated contract value to complete contracts in process in a loss position		74		70
Accrued interest		48		43
Accruals for pending and threatened litigation (see Note 18)⁽¹⁾		45		51
Deferred revenues		36		34
Product returns allowance⁽²⁾		4		5
Other		157		160
Total other current liabilities	$	444	$	431

⁽¹⁾

The quarterly period ended March 31, 2017 and the year ended December 31, 2016 included $10 million and $14 million, respectively, in connection with the EoTech matter.

⁽²⁾

On March 23, 2017, the Company ended the voluntary return program for various EoTech HWS products in connection with the preliminary settlement of the class action lawsuit (See Note 18). The product returns allowance, net of refund payments made to eligible owners, was $2 million at March 31, 2017. As of April 16, 2017, the Company had approved refunds at a cost of approximately $36 million, with an average refund cost per unit of $500.

The table below presents the components of other liabilities.

	March 31, 2017		December 31, 2016
	(in millions)
Other Liabilities:
Non-current income taxes payable (see Note 11)	$	123	$	124
Deferred compensation		50		47
Accrued product warranty costs		36		41
Estimated contingent purchase price payable for acquired businesses (see Note 5)		31		29
Accrued workers’ compensation		29		30
Notes payable and capital lease obligations		14		13
Other		82		84
Total other liabilities	$	365	$	368

The table below presents the changes in the Company’s accrued product warranty costs.

	First Quarter Ended
	March 31, 2017			March 25, 2016
	(in millions)
Accrued product warranty costs:⁽¹⁾
Balance at January 1	$	109		$	105
Acquisitions during the period		3			—
Accruals for product warranties issued during the period		16			9
Settlements made during the period		(12	)		(11	)
Balance at end of period	$	116		$	103

⁽¹⁾

Warranty obligations incurred in connection with long-term production contracts that are accounted for under the POC cost-to-cost method are included within the contract estimates at completion and are excluded from the above amounts. The balances above include both the current and non-current amounts.