Supplemental Cash Flow Information

6 Months Ended

Jun. 30, 2020

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,
	2020		2019
(Increase) decrease in:
Accounts receivable	$	178,509	$	34,843
Inventories	(44,394)		(11,298)
Deferred charges	9,240		463
Other current assets	(9,919)		(14,804)
Decrease in:
Accounts payable	(93,080)		(5,705)
Accrued liabilities	(20,838)		(41,406)
Net changes in components of operating assets and liabilities	$	19,518	$	(37,907)

Payments of interest and commitment fees were $97.8 million and $107.5 million for the six months ended June 30, 2020 and June 30, 2019, respectively. We capitalized interest of $1.0 million and $1.7 million during the six months ended June 30, 2020 and June 30, 2019, respectively.

At June 30, 2020 and June 30, 2019, we had incurred liabilities for fixed and intangible asset additions totaling $25.5 million and $15.1 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.