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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2022
Accounting Policies [Abstract]  
Summary of the activity of capitalized exploratory well costs for continuing operations
The following table summarizes the activity of capitalized exploratory well costs for continuing operations for the years ended December 31:

millions202220212020
Balance — beginning of year$213 $211 $424 
Additions to capitalized exploratory well costs pending the determination of proved reserves
323 163 122 
Reclassifications to property, plant and equipment based on the determination of proved reserves
(183)(67)(309)
Capitalized exploratory well costs charged to expense
(77)(94)(26)
Balance — end of year$276 $213 $211 
Summary of the activity of the asset retirement obligation
The following table summarizes the activity of AROs for the years ended December 31:

millions20222021
Beginning balance$4,026 $4,130 
Liabilities incurred – capitalized to PP&E55 27 
Liabilities settled and paid(342)(174)
Accretion expense145 205 
Acquisitions, divestitures and other, net (54)(53)
Revisions to previous estimates(25)(109)
Ending balance (a)
$3,805 $4,026 
(a)The ending balance included $169 million and $339 million related to the current balance of AROs that are presented in accrued liabilities on the Consolidated Balance Sheets as of December 31, 2022 and 2021, respectively.
Schedule of supplemental cash flow information
The following table represents U.S. federal, domestic state and international income taxes paid, tax refunds received and interest paid related to continuing operations during the year ended December 31, 2022, 2021 and 2020, respectively.
millions202220212020
Income tax payments$2,184 $763 $498 
Income tax refunds received$89 $70 $223 
Production, property and other tax payments $1,093 $790 $629 
Interest paid (a)
$1,425 $1,685 $1,521 
(a)     Net of capitalized interest of $69 million, $61 million and $84 million, for the years 2022, 2021 and 2020, respectively.
Summary of cash equivalents and restricted cash equivalents The following table provides a reconciliation of cash, cash equivalents, restricted cash and restricted cash equivalents as reported at the end of the period in the Consolidated Statements of Cash Flows for the year ended December 31, 2022 and 2021:
millions20222021
Cash and cash equivalents$984 $2,764 
Restricted cash and restricted cash equivalents26 24 
Restricted cash and restricted cash equivalents included in long-term receivables and other assets, net16 15 
Cash, cash equivalents, restricted cash and restricted cash equivalents$1,026 $2,803