Other Financial Information

9 Months Ended

Sep. 30, 2020

Other Financial Information [Abstract]

Other Financial Information

Note G – Other Financial Information

Additional disclosures regarding cash flow activities are provided below.໿

	Nine Months Ended September 30,
(Thousands of dollars)	2020		2019
Net (increase) decrease in operating working capital, excluding cash and cash equivalents:
(Increase) decrease in accounts receivable ¹	$	251,706	(128,698)
Decrease in inventories	4,747		4,398
(Increase) in prepaid expenses	(17,400)		(3,745)
Increase (decrease) in accounts payable and accrued liabilities ¹	(264,078)		165,224
Increase (decrease) in income taxes payable	(1,236)		3,078
Net (increase) decrease in noncash operating working capital	$	(26,261)	40,257
Supplementary disclosures:
Cash income taxes paid, net of refunds	$	(12,559)	(4,563)
Interest paid, net of amounts capitalized of $5.9 million in 2020 and $0.2 million in 2019	139,651		137,116
Non-cash investing activities:
Asset retirement costs capitalized ²	$	6,342	48,203
(Increase) decrease in capital expenditure accrual	74,742		(52,659)

1 Excludes receivable/payable balances relating to mark-to-market of crude contracts and contingent consideration relating to acquisitions.

2 2019 includes asset retirement obligations assumed as part of the LLOG acquisition of $37.3 million. See Note P.