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Net Interest And Other Financial Costs (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Other Income and Expenses [Abstract] |  |  |  |  |
Interest income |  | $ (12) | $ (26) | $ (30) | $ (71)
Interest expense |  | 352 | 233 | 1,042 | 675
Interest capitalized |  | (45) | (21) | (112) | (55)
Pension and other postretirement non-service costs | [1] | 6 | 45 | 6 | 47
Loss on extinguishment of debt |  | 0 | 0 | 0 | 4
Other financial costs |  | 16 | 9 | 39 | 18
Net interest and other financial costs |  | $ 317 | $ 240 | $ 945 | $ 618
[1] | See Note 21.

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