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Property, Plant And Equipment (Tables)
 12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
Schedule Of Property, Plant And Equipment
Our property, plant and equipment on the Consolidated Balance Sheets are classified as follows: 
At December 31, (in millions)
20222021
Property, Plant and Equipment
Gas Distribution Utility(1)
$16,576.4 $15,240.6 
Electric Utility(1)
7,162.4 6,754.9 
Corporate271.7 217.8 
Construction Work in Process1,398.2 808.0 
Renewable Generation Assets(2)
702.2 702.4 
Non-Utility and Other1,440.4 1,447.6 
Total Property, Plant and Equipment$27,551.3 $25,171.3 
Accumulated Depreciation and Amortization
Gas Distribution Utility(1)
$(3,678.1)$(3,490.2)
Electric Utility(1)
(2,557.4)(2,433.1)
Corporate(160.0)(132.2)
Renewable Generation Assets(2)
(29.7)(6.5)
Non-Utility and Other(1,283.5)(1,227.5)
Total Accumulated Depreciation and Amortization$(7,708.7)$(7,289.5)
Net Property, Plant and Equipment$19,842.6 $17,881.8 
(1)NIPSCO’s common utility plant and associated accumulated depreciation and amortization are allocated between Gas Distribution Utility and Electric Utility Property, Plant and Equipment.
(2)Our renewable generation assets are part of our electric segment and represent Non-Utility Property, owned and operated by JVs between NIPSCO and unrelated tax equity partners, and depreciated straight-line over 30 years. Refer to Note 4, "Variable Interest Entities," for additional information.
Schedule Of Depreciation Provisions For Utility Plant As A Percentage Of The Original Cost
The weighted average depreciation provisions for utility plant, as a percentage of the original cost, for the periods ended December 31, 2022, 2021 and 2020 were as follows:
202220212020
Electric Operations3.1 %3.4 %3.4 %
Gas Distribution Operations2.3 %2.2 %2.3 %