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Other Financial Information - Noncash Opearting Working Capital (Increase) Decrease (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Other Financial Information [Abstract] |  |  |  |  |
(Increase) decrease in accounts receivable | $ (232,037) | $ (30,212) |  | $ (15,462) |
(Increase) decrease in inventories | 10,258 | 16,794 |  | 15,429 |
(Increase) decrease in prepaid expenses | 4,650 | (10,011) |  | 15,752 |
Increase (decrease) in accounts payable and accrued liabilities | 196,773 | 8,784 |  | 70,376 |
Increase (decrease) in income taxes payable | 3,469 | (1,458) |  | (7,249) |
Net (increase) decrease in noncash operating working capital | (16,887) | (16,103) | [1] | 78,846 | [1]
Cash income taxes paid, net of refunds | (6,645) | (7,603) |  | (5,969) |
Interest paid, net of amounts capitalized of $1.8 million in 2019 and $0.2 million in 2018 | 179,722 | 158,071 |  | 144,455 |
Asset retirement costs capitalized | 33,874 | 346,387 |  | 126 |
(Increase) decrease in capital expenditure accrual | (73,426) | 9,817 |  | $ 16,325 |
Interest paid, net of amounts capitalized | $ 1,800 | $ 200 |  |  |
[1] | Reclassified to conform with current presentation (see Note E)

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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586 + Details
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