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MATERIALS, SUPPLIES, AND INVENTORIES (Tables)
3 Months Ended
Mar. 31, 2025
Inventory Disclosure [Abstract]  
Schedule of inventory
Our inventories consisted of:
(in millions)March 31, 2025December 31, 2024
Materials and supplies$394.5 $412.5 
Fossil fuel97.0 100.5 
Natural gas in storage84.5 300.2 
Total$576.0 $813.2