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Supplemental Income (Loss) Statement Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Other Income and Expenses [Abstract] |  |  |  |
Interest expense | $ 144 | $ 128 | $ 267 | $ 241
Interest income | (48) | (11) | (88) | (19)
Pension and postretirement net periodic benefit cost (benefit) | (31) | (67) | (62) | (134)
Total | $ 65 | $ 50 | $ 117 | $ 88

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