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Other Financial Information | 6 Months Ended
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Jun. 30, 2018
Other Financial Information [Abstract] |
Other Financial Information | ﻿ Note G – Other Financial Information Additional disclosures regarding cash flow activities are provided below. ﻿
﻿ |  |  |  |  |
﻿ | Six Months Ended June 30, |
﻿(Thousands of dollars) | 2018 |  | 2017 |
﻿Net (increase) decrease in operating working capital other than cash and cash equivalents: |  |  |  |  |
﻿(Increase) decrease in accounts receivable | $ | (15,528) |  | 125,283 |
﻿Decrease in inventories |  | 16,929 |  | 5,918 |
﻿(Increase) decrease in prepaid expenses |  | (7,890) |  | 9,206 |
﻿Increase (decrease) in accounts payable and accrued liabilities |  | 49,311 |  | (136,500) |
﻿Increase in income taxes payable |  | 42,618 |  | 38,674 |
﻿Net decrease in noncash operating working capital | $ | 85,440 |  | 42,581 |
﻿Supplementary disclosures: |  |  |  |  |
﻿Cash income taxes paid, net of refunds | $ | 36,618 |  | 9,448 |
﻿Interest paid, net of amounts capitalized of $2,377 in 2018 and $2,449 in 2017 |  | 79,279 |  | 72,136 |
﻿ |  |  |  |  |
﻿Non-cash investing activities: |  |  |  |  |
﻿Asset retirement costs capitalized | $ | 1,608 |  | 797 |
﻿Decrease in capital expenditure accrual |  | 39,322 |  | 43,370 |
﻿ ﻿

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- Definition The entire disclosures of supplemental information, including descriptions and amounts, related to the balance sheet, income statement, and/or cash flow statement. + References No definition available. + Details
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