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Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2020

Supplemental Cash Flow Elements [Abstract]

Net Changes In Components of Operating Assets and Liabilities

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)

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