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Other Income/(Loss) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component $ 277 $ (21) $ 1,272 $ 362
Investment-related interest income 90 202 374 612
Unrecognized Tax Benefits, Interest on Income Taxes Expense (4) (5) (15) (26)
Gain (Loss) on Investments 297 199 312 79
Gains (Losses) On Changes In Investments In Affiliates 3 44 3,483 46
Gain (Loss) on Extinguishment of Debt 0 (1) (1) (54)
Royalty income 139 91 322 283
Other 43 25 96 132
Total $ 845 $ 534 $ 5,843 $ 1,434