Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating Activities
Net income including noncontrolling interests	$ 1,004	$ 1,091
Net income	952	1,022
Adjustments to reconcile net income including noncontrolling interests to net cash provided by operating activities:
Depreciation, depletion and amortization (including nuclear fuel)	1,106	1,088
Deferred income taxes and investment tax credits	229	406
Proceeds from assignment of tower rental portfolio		91
Contribution to pension plan		(75)
Gains on sales of assets	(44)
Provision for rate credits to electric utility customers	215
Charge associated with future ash pond and landfill closure costs	81
Charge associated with FERC-regulated plant disallowance	129
Other adjustments	(42)	(64)
Changes in:
Accounts receivable	158	307
Inventories	31	21
Deferred fuel and purchased gas costs, net	(295)	(79)
Prepayments	(15)	32
Accounts payable	(151)	(211)
Accrued interest, payroll and taxes	(90)	(73)
Customer deposits	108	12
Margin deposit assets and liabilities	(34)	54
Net realized and unrealized changes related to derivative activities	82	34
Other operating assets and liabilities	(47)	(274)
Net cash provided by operating activities	2,425	2,360
Investing Activities
Plant construction and other property additions (including nuclear fuel)	(2,046)	(2,748)
Proceeds from assignments of shale development rights	44
Acquisition of solar development projects	(51)	(280)
Proceeds from sales of securities	844	1,119
Purchases of securities	(890)	(1,156)
Contributions to equity method affiliates	(134)	(252)
Other	(3)	(4)
Net cash used in investing activities	(2,236)	(3,321)
Financing Activities
Issuance of short-term notes	1,450
Issuance (repayment) of short-term debt, net	(553)	(322)
Issuance of long-term debt	2,400	2,730
Repayment of long-term debt	(2,840)	(490)
Credit facility borrowings	73
Issuance of common stock	662	156
Common dividend payments	(1,089)	(949)
Other	(123)	(162)
Net cash provided by (used in) financing activities	(20)	963
Increase in cash, restricted cash and equivalents	169	2
Cash, restricted cash and equivalents at beginning of period	185	322
Cash, restricted cash and equivalents at end of period	354	324
Significant noncash investing and financing activities:
Accrued capital expenditures	253	270
Virginia Electric and Power Company
Operating Activities
Net income	523	674
Adjustments to reconcile net income including noncontrolling interests to net cash provided by operating activities:
Depreciation, depletion and amortization (including nuclear fuel)	632	665
Deferred income taxes and investment tax credits	137	167
Proceeds from assignment of tower rental portfolio		91
Provision for rate credits to customers	215
Charge associated with future ash pond and landfill closure costs	81
Other adjustments	(19)	(20)
Changes in:
Accounts receivable	(26)	92
Affiliated receivables and payables	(86)	39
Inventories	36	19
Deferred fuel and purchased gas costs, net	(357)	(78)
Prepayments	(6)	(4)
Accounts payable	(45)	(32)
Accrued interest, payroll and taxes	13	23
Net realized and unrealized changes related to derivative activities	54	27
Asset retirement obligations	(18)	(42)
Other operating assets and liabilities	64	(130)
Net cash provided by operating activities	1,198	1,491
Investing Activities
Plant construction and other property additions (including nuclear fuel)	(1,170)	(1,216)
Purchases of nuclear fuel	(55)	(116)
Acquisition of solar development projects	(43)	(3)
Proceeds from sales of securities	414	498
Purchases of securities	(436)	(517)
Other	4	(17)
Net cash used in investing activities	(1,286)	(1,371)
Financing Activities
Issuance (repayment) of short-term debt, net	616	351
Issuance of long-term debt	700	750
Repayment of affiliated current borrowings, net	(8)	(250)
Repayment of long-term debt	(951)	(78)
Common dividend payments	(257)	(854)
Other	(6)	(6)
Net cash provided by (used in) financing activities	94	(87)
Increase in cash, restricted cash and equivalents	6	33
Cash, restricted cash and equivalents at beginning of period	24	11
Cash, restricted cash and equivalents at end of period	30	44
Significant noncash investing and financing activities:
Accrued capital expenditures	159	169
Dominion Energy Gas Holdings, LLC
Operating Activities
Net income	181	185
Adjustments to reconcile net income including noncontrolling interests to net cash provided by operating activities:
Depreciation, depletion and amortization (including nuclear fuel)	112	110
Deferred income taxes and investment tax credits	27	112
Gains on sales of assets	(44)
Charge associated with FERC-regulated plant disallowance	129
Other adjustments	4	(6)
Changes in:
Accounts receivable	67	73
Inventories	(18)	(12)
Deferred fuel and purchased gas costs, net	8	11
Prepayments	26	18
Accounts payable	(101)	(97)
Accrued interest, payroll and taxes	(51)	(52)
Other operating assets and liabilities	7	(3)
Affiliated receivables and payables	(68)	(19)
Asset retirement obligations	(72)	(65)
Net cash provided by operating activities	207	255
Investing Activities
Plant construction and other property additions (including nuclear fuel)	(316)	(309)
Proceeds from assignments of shale development rights	44
Other	(6)	(1)
Net cash used in investing activities	(278)	(310)
Financing Activities
Issuance (repayment) of short-term debt, net	(441)	155
Issuance of long-term debt	500
Repayment of affiliated current borrowings, net	38	(94)
Distribution payments to parent	(25)	(15)
Other	(2)
Net cash provided by (used in) financing activities	70	46
Increase in cash, restricted cash and equivalents	(1)	(9)
Cash, restricted cash and equivalents at beginning of period	30	43
Cash, restricted cash and equivalents at end of period	29	34
Significant noncash investing and financing activities:
Accrued capital expenditures	$ 51	$ 44