Supplemental Cash Flow Information

9 Months Ended

Sep. 30, 2014

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

12. Supplemental Cash Flow Information

The following table provides information regarding the net changes in components of operating assets and liabilities.

	Nine Months Ended September 30,
	2014			2013
(Increase) decrease in:
Accounts receivable	$	43,591		$	(92,906	)
Inventories	(14,060		)	(32,073		)
Other current assets	48,582			13,897
Increase (decrease) in:
Accounts payable	(8,576		)	75,506
Accrued liabilities	(30,487		)	7,222
Net changes in components of operating assets and liabilities	$	39,050		$	(28,354	)

Payments of interest and commitment fees were $46.3 million and $32.5 million for the nine months ended September 30, 2014 and September 30, 2013, respectively.

At September 30, 2014 and September 30, 2013, we had incurred liabilities for fixed and intangible asset additions totaling $61.2 million and $22.9 million, respectively, that had not been paid at the end of the third quarter, and, therefore, were not included in the caption “Payments to acquire fixed and intangible assets” under Cash Flows from Investing Activities in the Unaudited Condensed Consolidated Statements of Cash Flows.

At September 30, 2014 we had incurred liabilities for other asset additions totaling $9.8 million, that had not been paid at the end of the third quarter and, therefore, were not included in the caption "Other, net" under Cash Flows from Investing Activities in the Unaudited Condensed Consolidated Statements of Cash Flows.