XML 27 R1.htm IDEA: XBRL DOCUMENT v3.6.0.2
Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2016
Feb. 15, 2017
Jun. 30, 2016
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2016    
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY    
Trading Symbol D    
Entity Registrant Name DOMINION RESOURCES INC /VA/    
Entity Central Index Key 0000715957    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Entity Common Stock, Shares Outstanding   628,115,398  
Entity Well Known Seasoned Issuer Yes    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Public Float     $ 47,900,000,000
Virginia Electric and Power Company      
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2016    
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY    
Trading Symbol VEL - PE    
Entity Registrant Name VIRGINIA ELECTRIC & POWER CO    
Entity Central Index Key 0000103682    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Entity Common Stock, Shares Outstanding   274,723  
Entity Well Known Seasoned Issuer Yes    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Public Float     0
Dominion Gas Holdings, LLC      
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2016    
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY    
Entity Registrant Name Dominion Gas Holdings, LLC    
Entity Central Index Key 0001603291    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Entity Common Stock, Shares Outstanding   0  
Entity Well Known Seasoned Issuer Yes    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Public Float     $ 0