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Supplemental Income (Loss) Statement Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Other Income and Expenses [Abstract] |  |  |  |
Interest expense | $ 304 | $ 106 | $ 571 | $ 347
Interest income | (73) | (17) | (161) | (36)
Pension and postretirement net periodic benefit cost (benefit) | (31) | (65) | (93) | (199)
Total | $ 200 | $ 24 | $ 317 | $ 112

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