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Goodwill (Tables)
6 Months Ended
Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The following presents our goodwill balance allocated by segment as of June 30, 2024:

(in millions)
Columbia Operations
NIPSCO Operations
Corporate and OtherTotal
Goodwill$1,468.1 $17.8 $— $1,485.9