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REVENUE (Tables)
6 Months Ended
Jun. 30, 2024
Revenue from Contract with Customer [Abstract]  
Schedule of Disaggregation of Revenue
The following represents a disaggregation of revenue from contracts with customers for the three and six months ended June 30, 2024 and 2023:
Three Months Ended June 30,Six Months Ended June 30,
(In millions)2024202320242023
 Distribution
Retail generation and distribution services
Residential $1,054 $967 $2,238 $2,138 
Commercial 384 374 758 751 
Industrial 153 213 299 425 
Other 18 17 38 34 
Wholesale 1113
Other revenue from contracts with customers19 2740 46
Total revenues from contracts with customers1,629 1,609 3,375 3,407 
Other revenue unrelated to contracts with customers19 1840 37
Total Distribution$1,648 $1,627 $3,415 $3,444 
Integrated
Retail generation and distribution services
Residential$578 $423 $1,152 $929 
Commercial276 240 528 496 
Industrial147 133 285 268 
Other14 14 
Wholesale38 5068 95
Transmission 116 86197 150
Other revenue from contracts with customers13 12 
Total revenues from contracts with customers1,170 946 2,257 1,964 
Other revenue unrelated to contracts with customers1016 20
Total Integrated $1,178 $956 $2,273 $1,984 
Stand-Alone Transmission
ATSI $261 $241 $504 $467 
TrAIL 71 66 138 132 
MAIT 110 98 214 187 
KATCo23 27 43 42 
Other (2)$— (2)— 
Total revenues from contracts with customers463 432 897 828 
Other revenue unrelated to contracts with customers
Total Stand-Alone Transmission $468 $436 $906 $836 
Corporate/Other, Eliminations and Reconciling Adjustments
Wholesale$$$$
Eliminations and reconciling adjustments (15)(16)(31)(32)
Total Corporate/Other, Eliminations and Reconciling Adjustments$(14)$(13)$(27)$(27)
FirstEnergy Total Revenues $3,280 $3,006 $6,567 $6,237 
Schedule of Receivables from Customers Billed and unbilled customer receivables as of June 30, 2024, and December 31, 2023, are included below:
Customer ReceivablesJune 30, 2024December 31, 2023
 (In millions)
Billed$816 $717 
Unbilled741 665 
1,557 1,382 
Less: Uncollectible Reserve 54 64 
Total Customer Receivables $1,503 $1,318 
Schedule of Activity in the Allowance for Uncollectible Accounts on Customer Receivables
Activity in the allowance for uncollectible accounts on customer receivables for the six months ended June 30, 2024, and for the year ended December 31, 2023 are as follows:
(In millions)
Balance, January 1, 2023$137 
Provision for expected credit losses(1)
Charged to other accounts(2)
34 
Write-offs(115)
Balance, December 31, 2023$64 
Provision for expected credit losses(1)
32 
Charged to other accounts(2)
17 
Write-offs(59)
Balance, June 30, 2024
$54 
(1) Approximately $2 million and $(15) million of which was deferred for future recovery (refund) in the six months ended June 30, 2024 and the year ended December 31, 2023, respectively.
(2) Represents recoveries and reinstatements of accounts written off for uncollectible accounts.