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Segment Information (All Registrants)
 3 Months Ended
Mar. 31, 2024
Segment Reporting [Abstract]  
Segment Information (All Registrants) Segment Information (All Registrants)
Operating segments for each of the Registrants are determined based on information used by the CODMs in deciding how to evaluate performance and allocate resources at each of the Registrants.
Exelon has six reportable segments, which include ComEd, PECO, BGE, and PHI's three reportable segments consisting of Pepco, DPL, and ACE. ComEd, PECO, BGE, Pepco, DPL, and ACE each represent a single reportable segment, and as such, no separate segment information is provided for these Registrants. Exelon,
ComEd, PECO, BGE, Pepco, DPL, and ACE's CODMs evaluate the performance of and allocate resources to the segments based on net income.
An analysis and reconciliation of the Registrants’ reportable segment information to the respective information in the consolidated financial statements for the three months ended March 31, 2024 and 2023 is as follows:
ComEdPECOBGEPHI
Other(a)
Intersegment
Eliminations		Exelon
Operating revenues(b):
2024
Electric revenues$2,095 $782 $881 $1,532 $— $(6)$5,284 
Natural gas revenues— 272 416 72 — (1)759 
Shared service and other revenues— — — 2 459 (461)— 
Total operating revenues$2,095 $1,054 $1,297 $1,606 $459 $(468)$6,043 
2023
Electric revenues$1,667 $795 $814 $1,436 $— $(5)$4,707 
Natural gas revenues— 317 443 97 — (1)856 
Shared service and other revenues— — — 3 437 (440)— 
Total operating revenues$1,667 $1,112 $1,257 $1,536 $437 $(446)$5,563 
Intersegment revenues(c):
2024$2 $2 $2 $3 $457 $(466)$— 
20233 2 3 3 434 (445)— 
Depreciation and amortization:
2024$362 $104 $150 $246 $17 $— $879 
2023338 98 167 241 16 — 860 
Operating expenses:
2024$1,781 $851 $967 $1,335 $472 $(475)$4,931 
20231,256 902 964 1,297 485 (447)4,457 
Interest expense, net:
2024$122 $55 $50 $90 $151 $— $468 
2023117 48 44 76 127 — 412 
Income taxes:
2024$19 $10 $24 $40 $(30)$— $63 
202371 4 52 34 (27)— 134 
Net income (loss):
2024$193 $149 $264 $168 $(116)$— $658 
2023241 166 200 155 (93)— 669 
Capital expenditures:
2024$594 $361 $324 $453 $35 $— $1,767 
2023617 335 350 561 18 — 1,881 
Total assets:
March 31, 2024$43,132 $16,116 $14,444 $27,535 $6,376 $(4,392)$103,211 
December 31, 202342,827 15,595 14,184 26,903 6,374 (4,337)101,546 
__________
(a)Other primarily includes Exelon’s corporate operations, shared service entities, and other financing and investment activities.
(b)Includes gross utility tax receipts from customers. The offsetting remittance of utility taxes to the governing bodies is recorded in Taxes other than income taxes in the Registrants’ Consolidated Statements of Operations and Comprehensive Income. See Note 14 — Supplemental Financial Information for additional information on total utility taxes.
(c)See Note 15 — Related Party Transactions for additional information on intersegment revenues.

PHI:
PepcoDPLACE
Other(a)
Intersegment
Eliminations		PHI
Operating revenues(b):
2024
Electric revenues$759 $419 $358 $— $(4)$1,532 
Natural gas revenues— 72 — — — 72 
Shared service and other revenues— — — 109 (107)2 
Total operating revenues$759 $491 $358 $109 $(111)$1,606 
2023
Electric revenues$710 $377 $353 $— $(4)$1,436 
Natural gas revenues— 97 — — — 97 
Shared service and other revenues— — — 102 (99)3 
Total operating revenues$710 $474 $353 $102 $(103)$1,536 
Intersegment revenues(c):
2024$2 $2 $1 $109 $(111)$3 
20231 2 1 102 (103)3 
Depreciation and amortization:
2024$107 $61 $74 $4 $— $246 
2023108 60 67 6 — 241 
Operating expenses:
2024$640 $391 $303 $111 $(110)$1,335 
2023610 388 298 104 (103)1,297 
Interest expense, net:
2024$45 $22 $20 $3 $— $90 
202339 17 16 4 — 76 
Income taxes:
2024$14 $17 $11 $(2)$— $40 
202312 12 11 (1)— 34 
Net income (loss):
2024$75 $66 $29 $(2)$— $168 
202365 60 33 (3)— 155 
Capital expenditures:
2024$229 $134 $89 $1 $— $453 
2023264 134 161 2 — 561 
Total assets:
March 31, 2024$11,585 $6,291 $5,253 $4,718 $(312)$27,535 
December 31, 202311,194 5,966 5,157 4,627 (41)26,903 
__________
(a)Other primarily includes PHI’s corporate operations, shared service entities, and other financing and investment activities.
(b)Includes gross utility tax receipts from customers. The offsetting remittance of utility taxes to the governing bodies is recorded in Taxes other than income taxes in the Registrants’ Consolidated Statements of Operations and Comprehensive Income. See Note 14 — Supplemental Financial Information for additional information on total utility taxes.
(c)Includes intersegment revenues with ComEd, PECO, and BGE, which are eliminated at Exelon.
Electric and Gas Revenue by Customer Class (Utility Registrants):
The following tables disaggregate the Registrants' revenues recognized from contracts with customers into categories that depict how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. For the Utility Registrants, the disaggregation of revenues reflects the two primary utility services of electric sales and natural gas sales (where applicable), with further disaggregation of these tariff sales provided by major customer groups. Exelon’s disaggregated revenues are consistent with the Utility Registrants, but exclude any intercompany revenues.
Three Months Ended March 31, 2024
Revenues from contracts with customersComEdPECOBGEPHIPepcoDPLACE
Electric revenues
Residential$918 $520 $534 $775 $345 $256 $174 
Small commercial & industrial594 126 90 158 46 62 50 
Large commercial & industrial320 57 132 340 262 29 49 
Public authorities & electric railroads17 7 7 20 11 4 5 
Other(a)
227 74 93 192 64 63 67 
Total electric revenues(b)
$2,076 $784 $856 $1,485 $728 $414 $345 
Natural gas revenues
Residential$— $193 $271 $46 $— $46 $— 
Small commercial & industrial— 64 47 17 — 17 — 
Large commercial & industrial— — 72 2 — 2 — 
Transportation— 8 — 5 — 5 — 
Other(c)
— 7 5 2 — 2 — 
Total natural gas revenues(d)
$— $272 $395 $72 $— $72 $— 
Total revenues from contracts with customers$2,076 $1,056 $1,251 $1,557 $728 $486 $345 
Other revenues
Revenues from alternative revenue programs$19 $(2)$43 $46 $29 $4 $13 
Other electric revenues(e)
— — 2 3 2 1 — 
Other natural gas revenues(e)
— — 1 — — — — 
Total other revenues$19 $(2)$46 $49 $31 $5 $13 
Total revenues for reportable segments$2,095 $1,054 $1,297 $1,606 $759 $491 $358 
Three Months Ended March 31, 2023
Revenues from contracts with customersComEdPECOBGEPHIPepcoDPLACE
Electric revenues
Residential$836 $519 $434 $639 $283 $210 $146 
Small commercial & industrial361 135 92 160 39 62 59 
Large commercial & industrial84 65 149 378 282 33 63 
Public authorities & electric railroads10 8 7 17 8 4 5 
Other(a)
217 68 96 176 56 58 63 
Total electric revenues(b)
$1,508 $795 $778 $1,370 $668 $367 $336 
Natural gas revenues
Residential$— $223 $278 $60 $— $60 $— 
Small commercial & industrial— 75 41 26 — 26 — 
Large commercial & industrial— 1 70 1 — 1 — 
Transportation— 8 — 4 — 4 — 
Other(c)
— 9 19 6 — 6 — 
Total natural gas revenues(d)
$— $316 $408 $97 $— $97 $— 
Total revenues from contracts with customers$1,508 $1,111 $1,186 $1,467 $668 $464 $336 
Other revenues
Revenues from alternative revenue programs$153 $(4)$65 $65 $39 $9 $17 
Other electric revenues(e)
6 4 4 4 3 1 — 
Other natural gas revenues(e)
— 1 2 — — — — 
Total other revenues$159 $1 $71 $69 $42 $10 $17 
Total revenues for reportable segments$1,667 $1,112 $1,257 $1,536 $710 $474 $353 
__________
(a)Includes revenues from transmission revenue from PJM, wholesale electric revenue and mutual assistance revenue.
(b)Includes operating revenues from affiliates in 2024 and 2023 respectively of:
•$2 million, $3 million at ComEd
•$2 million, $1 million at PECO
•$1 million, $2 million at BGE
•$3 million, $3 million at PHI
•$2 million, $1 million at Pepco
•$2 million, $2 million at DPL
•$1 million, $1 million at ACE
(c)Includes revenues from off-system natural gas sales.
(d)Includes operating revenues from affiliates in 2024 and 2023 respectively of:
•less than $1 million, $1 million at PECO
•$1 million, $1 million at BGE
(e)Includes late payment charge revenues.