Supplemental Cash Flow Information

6 Months Ended

Jun. 30, 2021

Supplemental Cash Flow Elements [Abstract]

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


	Six Months Ended June 30,
	2021		2020
(Increase) decrease in:
Accounts receivable	$	(77,785)	$	178,509
Inventories	21,550		(44,394)
Deferred charges	9,823		9,240
Other current assets	(4,835)		(9,919)
Increase (decrease) in:
Accounts payable	49,809		(93,080)
Accrued liabilities	32,710		(20,838)
Net changes in components of operating assets and liabilities	$	31,272	$	19,518

Payments of interest and commitment fees were $78.0 million and $97.8 million for the six months ended June 30, 2021 and June 30, 2020, respectively. We capitalized interest of $1.4 million and $1.0 million during the six months ended June 30, 2021 and June 30, 2020, respectively.

At June 30, 2021 and June 30, 2020, we had incurred liabilities for fixed and intangible asset additions totaling $71.5 million and $25.5 million, respectively, that had not been paid at the end of the 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. The increase in this amount is principally due to the increase in capital expenditures associated with our GOP, which has the ability to be fully financed with our Alkali Holding preferred units, subject to compliance with the covenants contained in the agreements with GSO (Note 10).