Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating Activities
Net income (loss) including noncontrolling interests	$ 1,008	$ (239)
Net income (loss)	1,008	(270)
Adjustments to reconcile net income (loss) including noncontrolling interests to net cash provided by operating activities:
Depreciation, depletion and amortization (including nuclear fuel)	685	759
Deferred income taxes and investment tax credits	216	(65)
Impairment of assets and other charges	95	768
Net losses (gains) on nuclear decommissioning trust funds and other investments	(152)	526
Other adjustments	4	4
Changes in:
Accounts receivable	334	245
Inventories	73	71
Deferred fuel and purchased gas costs, net	(149)	162
Prepayments	24	38
Accounts payable	21	(164)
Accrued interest, payroll and taxes	(177)	(234)
Customer deposits	(9)	(13)
Margin deposit assets and liabilities	(60)	46
Net realized and unrealized changes related to derivative activities	(218)	36
Other operating assets and liabilities	(243)	(307)
Net cash provided by operating activities	1,452	1,633
Investing Activities
Plant construction and other property additions (including nuclear fuel)	(1,328)	(1,462)
Acquisition of solar development projects	(23)	(8)
Proceeds from sales of securities	1,765	602
Purchases of securities	(1,765)	(631)
Contributions to equity method affiliates	(977)	(11)
Acquisition of equity method investments	0	(178)
Other	20	47
Net cash used in investing activities	(2,308)	(1,641)
Financing Activities
Issuance of short-term debt, net	1,921	1,279
Issuance of short-term notes	0	500
Repayment of supplemental 364-day credit facility borrowings	(225)	0
Issuance of long-term debt	150	950
Repayment of long-term debt	(161)	(932)
Issuance of common stock	48	78
Common dividend payments	(508)	(788)
Dividends and distributions	0	0
Other	(54)	(81)
Net cash provided by (used in) financing activities	1,171	1,006
Increase (decrease) in cash, restricted cash and equivalents	315	998
Cash, restricted cash and equivalents at beginning of period	247	269
Cash, restricted cash and equivalents at end of period	562	1,267
Virginia Electric and Power Company
Operating Activities
Net income (loss)	374	(280)
Adjustments to reconcile net income (loss) including noncontrolling interests to net cash provided by operating activities:
Depreciation, depletion and amortization (including nuclear fuel)	365	357
Deferred income taxes and investment tax credits	87	(135)
Impairment of assets and other charges (benefit)	(51)	764
Other adjustments	(29)	53
Changes in:
Accounts receivable	317	123
Affiliated receivables and payables	(144)	24
Inventories	21	5
Deferred fuel and purchased gas costs, net	(159)	70
Prepayments	(4)	(5)
Accounts payable	0	99
Accrued interest, payroll and taxes	54	13
Net realized and unrealized changes related to derivative activities	18	(12)
Other operating assets and liabilities	(65)	73
Net cash provided by operating activities	784	1,149
Investing Activities
Plant construction and other property additions	(766)	(764)
Purchases of nuclear fuel	(46)	(25)
Acquisition of solar development projects	(10)	(6)
Proceeds from sales of securities	789	294
Purchases of securities	(791)	(310)
Other	41	37
Net cash used in investing activities	(783)	(774)
Financing Activities
Issuance of short-term debt, net	375	(108)
Issuance (repayment) of affiliated current borrowings, net	(203)	(106)
Common dividend payments	(150)	(108)
Other	(2)	(1)
Net cash provided by (used in) financing activities	20	(323)
Increase (decrease) in cash, restricted cash and equivalents	21	52
Cash, restricted cash and equivalents at beginning of period	35	24
Cash, restricted cash and equivalents at end of period	$ 56	$ 76