Consolidated Statements of Cash Flows (Unaudited) - ComEd - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities
Net income	$ 1,711	$ 1,739
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation, amortization, and accretion, including nuclear fuel and energy contract amortization	2,616	2,679
Asset impairments	0	46
Gain on sales of assets and businesses	0	(8)
Deferred income taxes and amortization of investment tax credits	210	256
Net fair value changes related to derivatives	21	(59)
Net realized and unrealized (gains) losses on NDT funds	0	205
Net unrealized (gains) losses on equity investments	0	16
Other non-cash operating activities	(237)	265
Changes in assets and liabilities:
Accounts receivable	82	(1,049)
Inventories	(8)	(121)
Accounts payable and accrued expenses	(454)	823
Changes In Option Premiums Collected Received	0	39
Collateral (paid) received, net	(183)	1,456
Income taxes	50	3
Regulatory assets and liabilities, net	(395)	(689)
Pension and non-pension postretirement benefit contributions	(97)	(596)
Other assets and liabilities	(24)	(786)
Net cash flows provided by operating activities	3,292	4,141
Cash flows from investing activities
Capital expenditures	(5,540)	(5,179)
Other investing activities	25	36
Net cash flows used in investing activities	(5,515)	(4,986)
Cash flows from financing activities
Changes in short-term borrowings	(1,116)	(335)
Proceeds from short-term borrowings with maturities greater than 90 days	400	1,150
Repayments on short-term borrowings with maturities greater than 90 days	(150)	(925)
Issuance of long-term debt	5,300	5,801
Retirement of long-term debt	(1,209)	(2,067)
Dividends paid on common stock	(1,074)	(999)
Other financing activities	(101)	(121)
Net cash flows provided by financing activities	2,080	499
(Decrease) increase in cash, restricted cash, and cash equivalents	(143)	(346)
Cash, restricted cash, and cash equivalents at beginning of period	1,090	1,619
Cash, restricted cash, and cash equivalents at end of period	947	1,273
Supplemental cash flow information
Decrease in capital expenditures not paid	(169)	(147)
Commonwealth Edison Co
Cash flows from operating activities
Net income	822	706
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation, amortization, and accretion, including nuclear fuel and energy contract amortization	1,045	982
Deferred income taxes and amortization of investment tax credits	164	192
Other non-cash operating activities	(392)	(89)
Changes in assets and liabilities:
Accounts receivable	(111)	(351)
Receivables from and payables to affiliates, net	(12)	(54)
Inventories	(64)	(9)
Accounts payable and accrued expenses	(199)	226
Collateral (paid) received, net	28	69
Income taxes	50	0
Regulatory assets and liabilities, net	(248)	(499)
Pension and non-pension postretirement benefit contributions	(26)	(179)
Other assets and liabilities	(72)	(152)
Net cash flows provided by operating activities	985	842
Cash flows from investing activities
Capital expenditures	(1,926)	(1,801)
Other investing activities	8	21
Net cash flows used in investing activities	(1,918)	(1,780)
Cash flows from financing activities
Changes in short-term borrowings	(150)	233
Proceeds from short-term borrowings with maturities greater than 90 days	400	0
Repayments on short-term borrowings with maturities greater than 90 days	(150)	0
Issuance of long-term debt	975	750
Dividends paid on common stock	(560)	(434)
Contributions from parent	570	503
Other financing activities	(12)	(10)
Net cash flows provided by financing activities	1,073	1,042
(Decrease) increase in cash, restricted cash, and cash equivalents	140	104
Cash, restricted cash, and cash equivalents at beginning of period	511	384
Cash, restricted cash, and cash equivalents at end of period	651	488
Supplemental cash flow information
Decrease in capital expenditures not paid	$ (27)	$ (30)