SUPPLEMENTAL CASH FLOW INFORMATION (Tables)

12 Months Ended

Dec. 31, 2020

Supplemental Cash Flow Information [Abstract]

Schedule of Changes in Current Assets and Liabilities [Table Text Block]

Changes in current assets and current liabilities were as follows:


	Year Ended December 31,
	2020		2019		2018
	(Thousands of Dollars)
Decrease (increase) in current assets:
Accounts receivable	$	14,589	$	(23,480)	$	22,482
Receivable from related party	—		—		160
Inventories	1,340		(866)		3,819

Prepaid and other current assets	(3,326)		(5,103)		3,694
Increase (decrease) in current liabilities:
Accounts payable	(25,455)		8,068		8,003

Accrued interest payable	12,922		1,632		(4,279)
Accrued liabilities	7,886		(19,740)		39,862
Taxes other than income tax	3,972		(5,276)		4,521

Changes in current assets and current liabilities	$	11,928	$	(44,765)	$	78,262

Schedule of Supplemental Cash Flow Information [Table Text Block]

Cash flows related to interest and income taxes were as follows:


	Year Ended December 31,
	2020		2019		2018
	(Thousands of Dollars)
Cash paid for interest, net of amount capitalized	$	204,511	$	176,859	$	183,078
Cash paid for income taxes, net of tax refunds received	$	3,260	$	6,817	$	8,535

Schedule of Cash and Cash Equivalents [Table Text Block]

Restricted cash is included in "Other long-term assets, net" on the consolidated balance sheets. “Cash, cash equivalents and restricted cash” on the consolidated statements of cash flows was included in the consolidated balance sheets as follows:


	December 31,
	2020		2019
	(Thousands of Dollars)
Cash and cash equivalents	$	153,625	$	16,192
Other long-term assets, net	8,801		8,788
Cash, cash equivalents and restricted cash	$	162,426	$	24,980