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Other Income and Loss (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Net periodic pension and OPEB income/(cost), excluding service cost (a) $ 5,997 $ 69 $ (1,602)
Investment-related interest income 254 452 809
Interest income/(expense) on income taxes 7 (2) (29)
Net realized and unrealized (gains)/losses on cash equivalents, marketable securities, and other investments 9,159 315 139
Gains/(Losses) on changes in investments in affiliates 368 3,446 20
Gains/(Losses) on extinguishment of debt (d) (1,702) (1) (55)
Royalty income 619 493 381
Other 31 117 106
Other income/(loss), net (Note 5 and Note 22) 14,733 4,899 (226)
Cash Equivalents, Marketable Securities, and Other Investments      
Net realized and unrealized (gains)/losses on cash equivalents, marketable securities, and other investments $ 9,159 $ 325 $ 144