Consolidated Statements of Operations and Comprehensive Income (Unaudited) - Exelon - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Operating revenues
Revenues from alternative revenue programs		$ (126)	$ 106
Total operating revenues		6,714	6,043
Operating expenses
Operating and maintenance		1,347	1,271
Depreciation and amortization		903	879
Taxes other than income taxes		405	371
Total operating expenses		5,177	4,931
(Loss) gain on sale of assets		(1)	2
Operating income		1,536	1,114
Other income and (deductions)
Interest expense, net		(504)	(462)
Other, net		52	75
Total other income and (deductions)		(458)	(393)
Income (Loss) before income taxes		1,078	721
Income taxes		170	63
Net income attributable to common shareholders		908	658
Net income		908	658
Other comprehensive income, net of income taxes
Actuarial losses reclassified to periodic benefit cost		5	5
Pension and non-pension postretirement benefit plans valuation adjustments		5	(24)
Unrealized (loss) gain on cash flow hedges		(8)	33
Other comprehensive income		2	14
Comprehensive income		$ 910	$ 672
Average shares of common stock outstanding:
Basic average shares of common stock outstanding (in shares)		1,008	1,000
Assumed exercise and/or distributions of stock-based awards (in shares)	[1]	1	1
Diluted average shares of common stock outstanding (in shares)		1,009	1,001
Earnings Per Share [Abstract]
Earnings Per Share, Basic		$ 0.90	$ 0.66
Earnings Per Share, Diluted		$ 0.90	$ 0.66
Potomac Electric Power Company
Operating revenues
Revenues from alternative revenue programs		$ 2	$ 29
Total operating revenues		859	759
Operating expenses
Operating and maintenance		96	86
Depreciation and amortization		105	107
Taxes other than income taxes		113	102
Total operating expenses		695	640
(Loss) gain on sale of assets		(1)	0
Operating income		163	119
Other income and (deductions)
Interest expense, net		(52)	(45)
Other, net		11	15
Total other income and (deductions)		(41)	(30)
Income (Loss) before income taxes		122	89
Income taxes		25	14
Net income		97	75
Delmarva Power and Light Company
Operating revenues
Revenues from alternative revenue programs		(5)	4
Total operating revenues		548	491
Operating expenses
Operating and maintenance		60	51
Depreciation and amortization		63	61
Taxes other than income taxes		21	20
Total operating expenses		437	391
Operating income		111	100
Other income and (deductions)
Interest expense, net		(25)	(22)
Other, net		4	5
Total other income and (deductions)		(21)	(17)
Income (Loss) before income taxes		90	83
Income taxes		21	17
Net income		69	66
Pepco Holdings LLC
Operating revenues
Revenues from alternative revenue programs		(3)	46
Total operating revenues		1,778	1,606
Operating expenses
Operating and maintenance		296	274
Depreciation and amortization		234	246
Taxes other than income taxes		140	128
Total operating expenses		1,445	1,335
(Loss) gain on sale of assets		(1)	0
Operating income		332	271
Other income and (deductions)
Interest expense, net		(99)	(90)
Other, net		19	27
Total other income and (deductions)		(81)	(63)
Income (Loss) before income taxes		251	208
Income taxes		57	40
Net income		194	168
Other comprehensive income, net of income taxes
Comprehensive income		194	168
Related Party
Other income and (deductions)
Interest expense to affiliates, net		(6)	(6)
Related Party | Potomac Electric Power Company
Operating expenses
Operating and maintenance from affiliates		63	64
Related Party | Delmarva Power and Light Company
Operating expenses
Operating and maintenance from affiliates		46	44
Related Party | Pepco Holdings LLC
Operating expenses
Operating and maintenance from affiliates		53	51
Other income and (deductions)
Interest expense to affiliates, net		(1)	0
Electricity, US Regulated
Operating revenues
Electric operating revenues		5,816	5,198
Operating expenses
Purchased power and/or fuel		2,184	2,197
Electricity, US Regulated | Potomac Electric Power Company
Operating revenues
Electric operating revenues		855	728
Operating expenses
Purchased power and/or fuel		318	281
Electricity, US Regulated | Delmarva Power and Light Company
Operating revenues
Electric operating revenues		463	413
Operating expenses
Purchased power and/or fuel		209	186
Electricity, US Regulated | Pepco Holdings LLC
Operating revenues
Electric operating revenues		1,691	1,485
Operating expenses
Purchased power and/or fuel		684	607
Natural Gas, US Regulated
Operating revenues
Electric operating revenues		1,024	739
Operating expenses
Purchased power and/or fuel		338	213
Natural Gas, US Regulated | Delmarva Power and Light Company
Operating revenues
Electric operating revenues		88	72
Operating expenses
Purchased power and/or fuel		38	29
Natural Gas, US Regulated | Pepco Holdings LLC
Operating revenues
Electric operating revenues		88	72
Operating expenses
Purchased power and/or fuel		$ 38	$ 29

[1] The dilutive effects of stock-based compensation awards are calculated using the treasury stock method for all periods presented.