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Property, Plant and Equipment (Property, Plant and Equipment) (Detail) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Utility: |  |
Generation | $ 22,697 | $ 25,317
Transmission | 14,351 | 13,472
Distribution | 27,311 | 25,746
Storage | 436 | 428
Nuclear fuel | 2,283 | 2,296
General and other | 4,130 | 3,978
Plant under construction | 3,350 | 2,377
Total utility | 74,558 | 73,614
Non-jurisdictional - including plant under construction | 1,225 | 854
Nonutility: |  |
Nonregulated generation-nuclear | 1,736 | 1,652
Nonregulated generation-other | 3,268 | 3,985
Nuclear fuel | 1,012 | 930
Other-including plant under construction | 1,160 | 1,008
Total nonutility | 7,176 | 7,575
Total property, plant and equipment | 82,959 | 82,043
Virginia Electric and Power Company |  |
Utility: |  |
Generation | 16,769 | 19,552
Transmission | 11,000 | 10,229
Distribution | 12,839 | 12,095
Nuclear fuel | 1,709 | 1,688
General and other | 845 | 825
Plant under construction | 2,338 | 1,784
Total utility | 45,500 | 46,173
Non-jurisdictional - including plant under construction | 1,225 | 854
Nonutility: |  |
Other-including plant under construction | 11 | 11
Total property, plant and equipment | $ 46,736 | $ 47,038

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