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Other Income and Loss (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Net periodic pension and OPEB income/(cost), excluding service cost $ 1,602 $ (786) $ (1,757)
Investment-related interest income 809 667 459
Interest income/(expense) on income taxes (29) 33 2
Gain (Loss) on Investments 144 115 (23)
Gains/(Losses) on changes in investments in affiliates 20 42 14
Gains/(Losses) on extinguishment of debt (55) 0 0
Royalty income 381 491 678
Other 106 113 380
Total $ (226) $ 2,247 $ 3,267