Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating Activities
Net income (loss) including noncontrolling interests	$ 1,303	$ (1,371)
Net income	1,293	(1,439)
Adjustments to reconcile net income (loss) including noncontrolling interests to net cash provided by operating activities:
Depreciation, depletion and amortization (including nuclear fuel)	1,358	1,497
Deferred income taxes and investment tax credits	211	(231)
Impairment of assets and other charges	416	1,297
Loss from investment in Atlantic Coast Pipeline	22	2,315
Net losses (gains) on nuclear decommissioning trust funds and other investments	(364)	117
Other adjustments	232	40
Changes in:
Accounts receivable	337	360
Inventories	10	7
Deferred fuel and purchased gas costs, net	(300)	237
Prepayments	(143)	(193)
Accounts payable	(42)	(191)
Accrued interest, payroll and taxes	(135)	(313)
Customer deposits	(15)	(7)
Margin deposit assets and liabilities	(176)	19
Net realized and unrealized changes related to derivative activities	119	84
Pension and other postretirement benefits	(150)	(105)
Other operating assets and liabilities	(443)	(426)
Net cash provided by operating activities	2,240	3,136
Investing Activities
Plant construction and other property additions (including nuclear fuel)	(2,664)	(2,915)
Acquisition of solar development projects	(36)	(187)
Proceeds from sales of securities	2,710	1,660
Purchases of securities	(2,683)	(1,710)
Contributions to equity method affiliates	(983)	(39)
Acquisition of equity method investments	0	(178)
Other	(112)	35
Net cash used in investing activities	(3,768)	(3,334)
Financing Activities
Issuance (repayment) of short-term debt, net	2,133	(525)
Issuance of short-term notes	0	1,125
Repayment of short-term notes	0	(625)
Supplemental 364-Day credit facility borrowings	0	225
Repayment of supplemental 364-day credit facility borrowings	(225)	0
Issuance of long-term debt	1,250	4,355
Repayment of long-term debt	(722)	(2,210)
Supplemental credit facility borrowings	250	0
Issuance of common stock	97	148
Common dividend payments	(1,016)	(1,577)
Other	(182)	(245)
Net cash provided by (used in) financing activities	1,585	671
Increase in cash, restricted cash and equivalents	57	473
Cash, restricted cash and equivalents at beginning of period	247	269
Cash, restricted cash and equivalents at end of period	304	742
Virginia Electric and Power Company
Operating Activities
Net income	788	210
Adjustments to reconcile net income (loss) including noncontrolling interests to net cash provided by operating activities:
Depreciation, depletion and amortization (including nuclear fuel)	723	702
Deferred income taxes and investment tax credits	218	(220)
Impairment of assets and other charges (benefit)	(39)	806
Other adjustments	81	24
Changes in:
Accounts receivable	88	(21)
Affiliated receivables and payables	(208)	220
Inventories	25	(1)
Deferred fuel and purchased gas costs, net	(277)	136
Prepayments	(4)	0
Accounts payable	15	(9)
Accrued interest, payroll and taxes	43	18
Net realized and unrealized changes related to derivative activities	51	(20)
Other operating assets and liabilities	(220)	47
Net cash provided by operating activities	1,284	1,892
Investing Activities
Plant construction and other property additions	(1,575)	(1,474)
Purchases of nuclear fuel	(73)	(154)
Acquisition of solar development projects	(19)	(19)
Proceeds from sales of securities	1,249	530
Purchases of securities	(1,262)	(549)
Other	(22)	18
Net cash used in investing activities	(1,702)	(1,648)
Financing Activities
Issuance (repayment) of short-term debt, net	769	(243)
Issuance (repayment) of affiliated current borrowings, net	(32)	233
Issuance of long-term debt	0	105
Repayment of long-term debt	0	(105)
Common dividend payments	(300)	(215)
Other	(5)	(3)
Net cash provided by (used in) financing activities	432	(228)
Increase in cash, restricted cash and equivalents	14	16
Cash, restricted cash and equivalents at beginning of period	35	24
Cash, restricted cash and equivalents at end of period	$ 49	$ 40