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Other Income - Net
 12 Months Ended
Dec. 31, 2024
Other Income and Expenses [Abstract]  
Other Income - Net Other Income - Net
The Company derives income from items that are not considered operating activities. Income from these items is reported net of related expense. All components of net periodic pension and post-retirement benefit costs, excluding service cost, are included in other income - net on the consolidated income statement. Miscellaneous income (expense) may fluctuate due to timing and includes investment gains, losses and interest income as well as other non-operating activities. 

For discussion of the drivers of changes in net periodic pension and post-retirement benefit credit from 2023 to 2024 and from 2022 to 2023, refer to Note 9, Employee Benefit Plans. Interest income increased from 2023 to 2024 and from 2022 to 2023 primarily as a result of higher average interest rates. Other income – net consisted of the following:
 Years Ended
(Dollars in Millions)202420232022
Net Periodic Pension and Post-retirement Benefit Credit (a)
$50 $29 $79 
Interest Income85 79 42 
Miscellaneous Income7 31 12 
Total Other Income - Net$142 $139 $133 
(a) Excludes the service cost component of net periodic benefit cost.