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Restructuring Costs (Tables)
 6 Months Ended
Jun. 30, 2024
Restructuring and Related Activities [Abstract]  
Restructuring Costs The following table summarizes the Company’s restructuring liabilities:
Six Months Ended 
June 30,
(In millions)20242023
Balance at beginning of period$47 $77 
Additions related to merger integration— 11
Reductions related to severance payments(19)(18)
Balance at end of period$28 $70