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Property, Plant, and Equipment (Tables) | 12 Months Ended
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Dec. 31, 2023
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment - Balances | Property, plant, and equipment consisted of the following at December 31:
(in millions) |  | 2023 |  | 2022
Electric – generation |  | $ | 6,190.4 |  |  | $ | 5,480.5 |
Electric – distribution |  | 8,688.0 |  |  | 8,233.3 |
Natural gas – distribution, storage, and transmission |  | 14,851.3 |  |  | 14,203.3 |
Property, plant, and equipment to be retired, net |  | 1,043.5 |  |  | 1,085.6 |
Other |  | 2,350.0 |  |  | 2,302.7 |
Less: Accumulated depreciation |  | 8,907.9 |  |  | 8,416.2 |
Net |  | 24,215.3 |  |  | 22,889.2 |
CWIP |  | 1,118.3 |  |  | 972.1 |
Net utility and non-utility property, plant, and equipment |  | 25,333.6 |  |  | 23,861.3 |
We Power generation |  | 3,295.9 |  |  | 3,237.1 |
Renewable generation |  | 3,667.7 |  |  | 2,537.1 |
Natural gas storage |  | 291.6 |  |  | 292.2 |
Net non-utility energy infrastructure |  | 7,255.2 |  |  | 6,066.4 |
Corporate services |  | 169.8 |  |  | 163.0 |
Other |  | 14.3 |  |  | 23.8 |
Less: Accumulated depreciation |  | 1,227.5 |  |  | 1,082.3 |
Net |  | 6,211.8 |  |  | 5,170.9 |
CWIP |  | 36.1 |  |  | 81.6 |
Net other property, plant, and equipment |  | 6,247.9 |  |  | 5,252.5 |
Total property, plant, and equipment |  | $ | 31,581.5 |  |  | $ | 29,113.8 |
Schedule of activity related to severance liability | Activity related to these severance liabilities for the years ended December 31 was as follows:
(in millions) |  | 2023 |  | 2022 |  | 2021
Severance liability at January 1 |  | $ | 16.2 |  |  | $ | 4.9 |  |  | $ | 0.7 |
Severance expense |  | 1.6 |  |  | 11.3 |  |  | 4.6 |
Severance payments |  | — |  |  | — |  |  | (0.4) |
Total severance liability at December 31 |  | $ | 17.8 |  |  | $ | 16.2 |  |  | $ | 4.9 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-1 + Details
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- Definition Tabular disclosure of an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's restructuring reserve by type of cost and in total, and explanation of changes that occurred in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482017/420-10-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479823/420-10-S99-2 + Details
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