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Restructuring Costs
 12 Months Ended
Dec. 31, 2021
Restructuring and Related Activities [Abstract]  
Restructuring Costs Restructuring Costs
In connection with the Merger, the Company recognized $44 million of restructuring expenses during 2021 related to the accrual of employee-related severance and termination benefits associated with the expected termination of certain Cimarex employees.
The following table summarizes the Company’s restructuring liabilities:
(In millions)Year Ended December 31, 2021
Balance at beginning of period$— 
Additions related to merger integration44
Reductions related to merger integration payments(1)
Balance at end of period$43