Supplemental Cash Flow Information (Tables)

9 Months Ended

Sep. 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.

	Nine Months Ended September 30,
	2020		2019
(Increase) decrease in:
Accounts receivable	$	165,505	$	6,294
Inventories	(24,674)		709
Deferred charges	17,616		135
Other current assets	(1,620)		(10,358)
Increase (decrease) in:
Accounts payable	(59,477)		46,530
Accrued liabilities	(25,204)		(48,954)
Net changes in components of operating assets and liabilities	$	72,146	$	(5,644)