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Other Income
12 Months Ended
Dec. 31, 2024
Other Income and Expenses [Abstract]  
Other Income Other Income
Other income included the following for the years ended December 31:
Millions202420232022
Real estate income [a]$263 $414 $381 
Net periodic pension benefit/(costs)55 52 84 
Interest income [b]52 52 23 
Non-operating property environmental remediation and restoration(37)(37)(47)
Interest from IRS refund claims24 
Other [b](7)10 (15)
Total$350 $491 $426 
[a]2023 includes a one-time $107 million transaction. 2022 includes a $79 million gain from a land sale to the Illinois State Toll Highway Authority and a $35 million gain from a sale to the Colorado Department of Transportation.
[b]Prior periods have been reclassified to conform to the current period disclosure.