Consolidated Statements of Operations and Comprehensive Income - PHI - USD ($) $ 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	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 before income taxes	2,702	2,403	1,654
Income taxes	374	349	38
Net income	2,328	2,171	1,829
Comprehensive income	2,240	2,259	2,356
Related Party
Operating expenses
Purchased power from affiliates	0	159	1,178
Pepco Holdings LLC
Operating revenues
Revenues from alternative revenue programs	64	(59)	91
Operating revenues from affiliates	9	10	13
Total operating revenues	6,026	5,565	5,041
Operating expenses
Operating and maintenance	1,110	966	925
Depreciation and amortization	990	938	821
Taxes other than income taxes	487	475	458
Total operating expenses	5,114	4,734	4,240
Gain (loss) on sale of assets and businesses	9	0	0
Operating income	921	831	801
Other income and (deductions)
Interest expense, net	(323)	(292)	(267)
Other, net	108	78	69
Total other income and (deductions)	(215)	(214)	(198)
Income before income taxes	706	617	603
Income taxes	116	9	42
Net income	590	608	561
Comprehensive income	590	608	561
Pepco Holdings LLC | Related Party
Operating revenues
Operating revenues from affiliates	9	10	13
Operating expenses
Purchased power from affiliates	0	51	367
Operating and maintenance from affiliates	179	191	179
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
Electricity, US Regulated | Pepco Holdings LLC
Operating revenues
Operating revenues	5,748	5,376	4,769
Operating expenses
Purchased power and/or fuel	2,250	1,984	1,417
Natural Gas, US Regulated
Operating revenues
Operating revenues	1,764	2,018	1,522
Operating expenses
Purchased power and/or fuel	593	834	504
Natural Gas, US Regulated | Pepco Holdings LLC
Operating revenues
Operating revenues	205	238	168
Operating expenses
Purchased power and/or fuel	$ 98	$ 129	$ 73