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Other Income (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Other Income and Expenses [Abstract] |  |  |  |
Real estate income | $ 102 | $ 57 | $ 166 | $ 122
Interest income | 16 | 10 | 30 | 24
Net periodic pension benefit/(costs) | 14 | 15 | 27 | 30
Non-operating property environmental remediation and restoration | (7) | (8) | (12) | (14)
Interest from IRS refund claims | 0 | 24 | 0 | 24
Other | (2) | 5 | (10) | 9
Total | $ 123 | $ 103 | $ 201 | $ 195

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