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Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2020

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Changes to the Company's Before-tax Asset Retirement Obligation

The following table indicates the changes to the company’s before-tax asset retirement obligations in 2020, 2019 and 2018:

			2020									2019						2018
Balance at January 1			$	12,832								$	14,050					$	14,214
Liabilities assumed in the Noble acquisition			630									—						—
Liabilities incurred			10									32						96
Liabilities settled			(1,661)									(1,694)						(830)
Accretion expense			560									628						654
Revisions in estimated cash flows			1,245									(184)						(84)
Balance at December 31			$	13,616								$	12,832					$	14,050

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- References

No definition available.

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- Definition

Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859

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