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Supplemental Income Statement Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Mar. 31, 2021
Sep. 30, 2022
Sep. 30, 2021
Other Income and Expenses [Abstract]          
Interest expense $ 106 $ 117   $ 347 $ 370
Interest income (17) (6)   (36) (18)
Pension and postretirement net periodic benefit cost (benefit) (65) (80)   (199) (239)
Total $ 24 $ 31   $ 112 $ 113
Fixed rate medium term note due 2022          
Debt instrument          
Loss on extinguishment of debt     $ 11