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Income Taxes (Income Tax Expense for Continuing Operations Including Noncontrolling Interests) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Current: |  |  |
Federal | $ (155) | $ (24) | $ (11)
State | 85 | 75 | 14
Total current expense (benefit) | (70) | 51 | 3
Federal |  |  |
Taxes before operating loss carryforwards and investment tax credits | 1,050 | 384 | 956
Tax utilization (benefit) of operating loss carryforwards | (161) | 539 | (352)
Investment tax credits | (248) | (134) | (152)
State | 50 | 66 | (2)
Total deferred expense | 691 | 855 | 450
Investment tax credit - gross deferral | 35 | 0 | 0
Investment tax credit - amortization | (1) | (1) | (1)
Total income tax expense | 655 | 905 | 452
Virginia Electric and Power Company |  |  |
Current: |  |  |
Federal | 168 | 316 | 85
State | 90 | 92 | 67
Total current expense (benefit) | 258 | 408 | 152
Federal |  |  |
Taxes before operating loss carryforwards and investment tax credits | 435 | 154 | 381
Tax utilization (benefit) of operating loss carryforwards | (2) | 96 | 0
Investment tax credits | (25) | (11) | 0
State | 27 | 13 | 16
Total deferred expense | 435 | 252 | 397
Investment tax credit - gross deferral | 35 | 0 | 0
Investment tax credit - amortization | (1) | (1) | (1)
Total income tax expense | 727 | 659 | 548
Dominion Gas Holdings, LLC |  |  |
Current: |  |  |
Federal | (27) | 90 | 86
State | 4 | 30 | 32
Total current expense (benefit) | (23) | 120 | 118
Federal |  |  |
Taxes before operating loss carryforwards and investment tax credits | 239 | 156 | 192
Tax utilization (benefit) of operating loss carryforwards | (2) | 6 | 0
Investment tax credits | 0 | 0 | 0
State | 1 | 1 | 24
Total deferred expense | 238 | 163 | 216
Investment tax credit - gross deferral | 0 | 0 | 0
Investment tax credit - amortization | 0 | 0 | 0
Total income tax expense | $ 215 | $ 283 | $ 334

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