v3.26.3
REVENUE
9 Months Ended
Sep. 30, 2026
Revenue from Contract with Customer [Abstract]  
REVENUE REVENUE
FET and its subsidiaries account for revenue from contracts with customers under ASC 606, Revenue from Contracts with Customers. Revenue from leases, financial instruments, other contractual rights or obligations and other revenues that are not from contracts with customers are outside the scope of the standard and accounted for under other existing GAAP.

The following table represents a disaggregation of revenue from contracts with regulated transmission customers for the three and nine months ended September 30, 2026, and 2025, by transmission owner:
Revenues from Contracts with Customers by Transmission Asset OwnerFor the Three Months Ended September 30,For the Nine Months Ended September 30,
2026202520262025
(In millions)
ATSI$261 $273 $837 $792 
TrAIL65 66 189 197 
MAIT148 121 435 365 
Total Revenue from Contracts with Customers474 460 1,461 1,354 
Other revenue unrelated to contracts with customers
5 4 19 13 
Total revenues$479 $464 $1,480 $1,367