Other Financial Information (Tables)

3 Months Ended

Mar. 31, 2023

Additional disclosures regarding cash flow activities are provided below.


	Three Months Ended March 31,
(Thousands of dollars)	2023		2022
Net (increase) decrease in operating working capital, excluding cash and cash equivalents:
(Increase) in accounts receivable	$	(3,976)	$	(117,928)
(Increase) decrease in inventories	(9,296)		(4,541)
(Increase) decrease in prepaid expenses	3,813		(515)
Increase (decrease) in accounts payable and accrued liabilities ¹	(63,800)		40,426
Increase (decrease) in income taxes payable	(1,772)		1,636
Net (increase) in noncash operating working capital	$	(75,031)	$	(80,922)
Supplementary disclosures:
Cash income taxes paid, net of refunds	$	3,342	$	103
Interest paid, net of amounts capitalized of $3.3 million in 2023 and $5.3 million in 2022	19,358		40,181

Non-cash investing activities:
Asset retirement costs capitalized	$	2,396	$	3,889
(Increase) decrease in capital expenditure accrual	15,973		(49,352)

1 Excludes payable balances relating to mark-to-market of derivative instruments and contingent consideration relating to acquisitions.