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Other Income/(Loss) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Net periodic pension and OPEB income/(cost), excluding service cost $ 111 $ 429 $ 383 $ 906
Investment-related interest income 207 167 410 313
Interest income/(expense) on income taxes (1) 32 (21) 33
Realized and unrealized gains/(losses) on cash equivalents, marketable securities, and other investments (187) 217 (120) 212
Gains/(Losses) on changes in investments in affiliates (1) 0 2 58
Gains/(Losses) on extinguishment of debt (53) 0 (53) 0
Royalty income 108 129 192 272
Other 88 30 107 73
Total $ 272 $ 1,004 $ 900 $ 1,867