v3.26.1
REVENUE (Tables)
3 Months Ended
Mar. 31, 2026
Revenue from Contract with Customer [Abstract]  
Schedule of Disaggregation of Revenue
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