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Property, Plant and Equipment (Property, Plant and Equipment) (Details) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Utility: |  |
Generation | $ 17,147 | $ 15,656
Transmission | 14,315 | 11,461
Distribution | 16,381 | 13,128
Storage | 2,814 | 2,460
Nuclear fuel | 1,537 | 1,464
Gas gathering and processing | 216 | 799
Oil and gas | 1,652 | 0
General and other | 1,450 | 927
Plant under construction | 6,254 | 5,550
Total utility | 61,766 | 51,445
Nonutility: |  |
Merchant generation-nuclear | 1,419 | 1,339
Merchant generation-other | 4,149 | 2,683
Nuclear fuel | 897 | 938
Other-including plant under construction | 706 | 1,371
Total nonutility | 7,790 | 6,331
Total property, plant and equipment | 69,556 | 57,776
Gas gathering and processing |  |
Nonutility: |  |
Total property, plant and equipment | 619 | 0
Virginia Electric and Power Company |  |
Utility: |  |
Generation | 17,147 | 15,656
Transmission | 7,871 | 6,963
Distribution | 10,573 | 10,048
Nuclear fuel | 1,537 | 1,464
General and other | 745 | 709
Plant under construction | 2,146 | 2,793
Total utility | 40,019 | 37,633
Nonutility: |  |
Total nonutility | 11 | 6
Total property, plant and equipment | 40,030 | 37,639
Dominion Gas Holdings, LLC |  |
Utility: |  |
Transmission | 4,231 | 3,804
Distribution | 3,019 | 2,765
Storage | 1,627 | 1,583
Gas gathering and processing | 198 | 797
General and other | 184 | 165
Plant under construction | 448 | 443
Total utility | 9,707 | 9,557
Nonutility: |  |
Other-including plant under construction | 149 | 136
Total nonutility | 768 | 136
Total property, plant and equipment | 10,475 | 9,693
Dominion Gas Holdings, LLC | Gas gathering and processing |  |
Nonutility: |  |
Total property, plant and equipment | $ 619 | $ 0

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