v3.26.1
REVENUE
3 Months Ended
Mar. 31, 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 months ended March 31, 2026 and 2025, by transmission owner:
Revenues from Contracts with Customers by Transmission Asset OwnerFor the Three Months Ended March 31,
20262025
(In millions)
ATSI$282 $263 
TrAIL65 70 
MAIT138 131 
Total Revenue from Contracts with Customers485 464 
Other revenue unrelated to contracts with customers
Total revenues$492 $468