v3.26.3
Inventory
9 Months Ended
Sep. 30, 2026
Inventory Disclosure [Abstract]  
Inventory
5. Inventory
September 30,
2026
December 31,
2025
Coal$71 $94 
Oil products72 57 
Fuel inventory for electric generation143 151 
Materials and supplies, net171 124 
Environmental products2 3 
Inventory, net$316 $278