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Other Income - Net (Tables)
 12 Months Ended
Dec. 31, 2025
Other Income and Expenses [Abstract]  
Schedule of Other Income - Net Other income – net consisted of the following:
 Years Ended
(Dollars in Millions)202520242023
Net Periodic Pension and Post-retirement Benefit Credit (a)
$33 $50 $29 
Interest Income45 85 79 
Miscellaneous Income14 7 31 
Total Other Income - Net$92 $142 $139 
(a) Excludes the service cost component of net periodic benefit cost.