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Asset Retirement Obligations (Tables) | 12 Months Ended
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Dec. 31, 2022
Asset Retirement Obligation Disclosure [Abstract] |
Schedule of Reconciliation of Beginning and Ending Aggregate Carrying Amount of Asset Retirement Obligations | A reconciliation of the beginning and ending aggregate carrying amount of the ARO for 2022 and 2021 is shown in the following table.
(Thousands of dollars) | 2022 |  | 2021
Balance at beginning of year | $ | 971,893 |  |  | $ | 849,956 |
Accretion | 46,243 |  |  | 46,613 |
Liabilities incurred | 46,449 |  |  | 54,439 |
Revisions of previous estimates | (78,229) |  |  | 48,737 |
Liabilities settled | (64,255) |  |  | (27,824) |
Liabilities associated with assets held for sale | — |  |  | 263 |
Changes due to translation of foreign currencies | (10,448) |  |  | (291) |
Balance at end of year | 911,653 |  |  | 971,893 |
Current portion of liability at end of year ¹ | (94,385) |  |  | (132,117) |
Noncurrent portion of liability at end of year | $ | 817,268 |  |  | $ | 839,776 |
1 Included in “Other accrued liabilities” on the Consolidated Balance Sheets.

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- Definition Tabular disclosure of the carrying amount of a liability for asset retirement obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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