Statements of Cash Flows - Pepco - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities
Net income	$ 2,328	$ 2,171	$ 1,829
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	3,506	3,533	7,573
Deferred income taxes and amortization of investment tax credits	319	255	18
Other non-cash operating activities	(335)	370	(200)
Changes in assets and liabilities:
Accounts receivable	(37)	(1,222)	(703)
Inventories	(45)	(121)	(141)
Accounts payable and accrued expenses	(191)	1,318	440
Collateral (paid) received, net	(146)	1,248	(74)
Income taxes	48	(4)	327
Regulatory assets and liabilities, net	(439)	(1,326)	(634)
Pension and non-pension postretirement benefit contributions	(129)	(616)	(665)
Other assets and liabilities	(188)	(905)	(3,777)
Net cash flows provided by operating activities	4,703	4,870	3,012
Cash flows from investing activities
Capital expenditures	(7,408)	(7,147)	(7,981)
Proceeds from sales of assets and businesses	25	16	877
Other investing activities	8	0	26
Net cash flows used in investing activities	(7,375)	(6,990)	(3,317)
Cash flows from financing activities
Changes in short-term borrowings	(313)	986	269
Issuance of long-term debt	5,825	6,309	3,481
Retirement of long-term debt	(1,713)	(2,073)	(1,640)
Dividends paid on common stock	(1,433)	(1,334)	(1,497)
Other financing activities	(114)	(102)	(80)
Net cash flows provided by financing activities	2,683	1,591	758
(Decrease) increase in cash, restricted cash, and cash equivalents	11	(529)	453
Cash, restricted cash, and cash equivalents at beginning of period	1,090	1,619	1,166
Cash, restricted cash, and cash equivalents at end of period	1,101	1,090	1,619
Potomac Electric Power Company
Cash flows from operating activities
Net income	306	305	296
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	441	417	403
Gain on sales of assets	(9)	0	0
Deferred income taxes and amortization of investment tax credits	(15)	(17)	(8)
Other non-cash operating activities	53	36	(52)
Changes in assets and liabilities:
Accounts receivable	(29)	(104)	(28)
Inventories	(24)	(16)	(8)
Accounts payable and accrued expenses	6	24	16
Collateral (paid) received, net	(25)	24	2
Income taxes	60	(19)	11
Regulatory assets and liabilities, net	(45)	(69)	(81)
Pension and non-pension postretirement benefit contributions	(12)	(11)	(11)
Other assets and liabilities	(5)	(66)	(84)
Net cash flows provided by operating activities	699	471	462
Cash flows from investing activities
Capital expenditures	(957)	(874)	(843)
Proceeds from sales of assets and businesses	10	0	0
Other investing activities	8	3	(1)
Net cash flows used in investing activities	(939)	(871)	(844)
Cash flows from financing activities
Changes in short-term borrowings	(167)	124	140
Issuance of long-term debt	350	625	275
Retirement of long-term debt	0	(310)	0
Dividends paid on common stock	(252)	(463)	(268)
Contributions from parent	308	465	244
Other financing activities	(26)	(10)	(6)
Net cash flows provided by financing activities	213	431	385
(Decrease) increase in cash, restricted cash, and cash equivalents	(27)	31	3
Cash, restricted cash, and cash equivalents at beginning of period	99	68	65
Cash, restricted cash, and cash equivalents at end of period	72	99	68
Potomac Electric Power Company | Related Party
Changes in assets and liabilities:
Receivables from and payables to affiliates, net	$ (3)	$ (33)	$ 6