Other Financial Information (Tables)

9 Months Ended

Sep. 30, 2017


	Nine Months Ended September 30,
(Thousands of dollars)	2017		2016
Net (increase) decrease in operating working capital other than cash and cash equivalents:
Decrease in accounts receivable	$	90,614	75,841
Decrease (increase) in inventories		5,869	(15,768)
Decrease in prepaid expenses		25,285	122,399
Decrease in other		–	720
Decrease in accounts payable and accrued liabilities		(115,977)	(376,310)	*
(Decrease) increase in current income tax liabilities		(4,721)	40,500
Net (increase) decrease in noncash operating working capital	$	1,070	(152,618)
Supplementary disclosures:
Cash income taxes paid, net of refunds	$	25,118	(3,911)
Interest paid, net of amounts capitalized of $3,338 in 2017 and $3,318 in 2016		95,899	52,287

Non-cash investing activities:
Asset retirement costs capitalized	$	38,992	13,959
Decrease in capital expenditure accrual		42,403	179,203

*2016 balance included payments for deepwater rig contract exit of $266.6 million.