Consolidated Statements of Operations and Comprehensive Income - Exelon - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating revenues
Revenues from alternative revenue programs	$ 696	$ 161	$ 171
Total operating revenues	21,727	19,078	17,938
Operating expenses
Operating and maintenance	4,559	4,673	4,547
Depreciation and amortization	3,506	3,325	3,033
Taxes other than income taxes	1,408	1,390	1,291
Total operating expenses	17,714	15,761	15,256
Gain (loss) on sale of assets and businesses	10	(2)	0
Operating income (loss)	4,023	3,315	2,682
Other income and (deductions)
Interest expense, net	(1,704)	(1,422)	(1,264)
Other, net	408	535	261
Total other income and (deductions)	(1,321)	(912)	(1,028)
Income (loss) before income taxes	2,702	2,403	1,654
Income taxes	374	349	38
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	2,328	2,054	1,616
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	0	117	213
Net income	2,328	2,171	1,829
Net income (loss) attributable to noncontrolling interests	0	1	123
Net income attributable to common shareholders	2,328	2,170	1,706
Net Income (Loss) from Continuing Operations Available to Common Shareholders, Basic	2,328	2,054	1,616
Net Income (Loss) from Discontinued Operations Available to Common Shareholders, Basic	0	116	90
Other comprehensive (loss) income, net of income taxes
Prior service benefits reclassified to periodic benefit cost	0	(1)	(4)
Actuarial losses reclassified to periodic benefit cost	26	42	223
Pension and non-pension postretirement benefit plans valuation adjustments	(109)	46	432
Unrealized (loss) gain on cash flow hedges	(5)	2	(1)
Other comprehensive income (loss)	(88)	89	650
Comprehensive income (loss)	2,240	2,260	2,479
Comprehensive income attributable to noncontrolling interests	0	1	123
Comprehensive income attributable to common shareholders	$ 2,240	$ 2,259	$ 2,356
Average shares of common stock outstanding:
Basic Average Number of Shares Outstanding	996	986	979
Assumed Exercise and/or Distributions of Stock-Based Awards	1	1	1
Diluted Average Number of Shares Outstanding	997	987	980
Income (Loss) from Continuing Operations, Per Basic Share	$ 2.34	$ 2.08	$ 1.65
Income (Loss) from Continuing Operations, Per Diluted Share	2.34	2.08	1.65
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	0	0.12	0.09
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	$ 0	$ 0.12	$ 0.09
Related Party
Operating expenses
Purchased power and/or fuel from affiliates	$ 0	$ 159	$ 1,178
Other income and (deductions)
Interest expense to affiliates, net	25	25	25
Electricity, US Regulated
Operating revenues
Operating revenues	19,267	16,899	16,245
Operating expenses
Purchased power and/or fuel	7,648	5,380	4,703
Natural Gas, US Regulated
Operating revenues
Operating revenues	1,764	2,018	1,522
Operating expenses
Purchased power and/or fuel	$ 593	$ 834	$ 504