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Restructuring Costs
9 Months Ended
Sep. 30, 2023
Restructuring and Related Activities [Abstract]  
Restructuring Costs Restructuring Costs
Restructuring costs are primarily related to workforce reductions and associated severance benefits that were triggered by the merger with Cimarex Energy Co. that closed on October 1, 2021. The following table summarizes the Company’s restructuring liabilities:
Nine Months Ended 
September 30,
(In millions)20232022
Balance at beginning of period$77 $43 
Additions related to merger integration and transition costs1044
Payments of merger-related restructuring costs(28)(13)
Balance at end of period$59 $74