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Supplementary Information - Summary of Other Assets (Detail) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Segment Reporting [Abstract]    
Investments in APS projects $ 2,023 $ 1,786
Pension and other postretirement plan assets 904 1,034
Operating lease assets 538 553
Exploration data costs capitalized 141 154
Fair value of hedge contracts 1 66
Other 363 590
Total other assets $ 3,970 $ 4,183