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Asset Retirement Obligations (Notes)
12 Months Ended
Dec. 31, 2021
Asset Retirement Obligations, Noncurrent [Abstract]  
Asset Retirement Obligations Asset Retirement Obligations
The following table presents the reconciliation of the beginning and ending aggregate carrying amounts of short-term and long-term legal obligations associated with the retirement of property, plant and equipment for the years ended December 31, 2021 and 2020 (in millions):
 20212020
Carrying Amount at Beginning of Period$1,217 $1,111 
Liabilities Incurred81 58 
Liabilities Settled (1)
(131)(54)
Accretion44 47 
Revisions20 54 
Foreign Currency Translations— 
Carrying Amount at End of Period$1,231 $1,217 
Current Portion$43 $50 
Noncurrent Portion$1,188 $1,167 
(1)    Includes settlements related to asset sales and property exchanges.

The current and noncurrent portions of EOG's asset retirement obligations are included in Current Liabilities - Other and Other Liabilities, respectively, on the Consolidated Balance Sheets.