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Property, Plant, and Equipment (Tables) | 12 Months Ended
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Dec. 31, 2018
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment -Balances | Property, plant, and equipment consisted of the following at December 31:
(in millions) |  | 2018 |  | 2017
Electric – generation |  | $ | 6,410.6 |  |  | $ | 6,071.8 |
Electric – distribution |  | 6,534.6 |  |  | 6,137.5 |
Natural gas – distribution, storage, and transmission |  | 10,766.3 |  |  | 10,055.9 |
Property, plant, and equipment to be retired, net |  | 174.8 |  |  | 930.6 |
Other |  | 1,649.1 |  |  | 1,381.5 |
Less: Accumulated depreciation |  | 7,573.6 |  |  | 7,021.8 |
Net |  | 17,961.8 |  |  | 17,555.5 |
CWIP |  | 707.5 |  |  | 508.2 |
Net utility property, plant, and equipment |  | 18,669.3 |  |  | 18,063.7 |
We Power generation |  | 3,244.4 |  |  | 3,215.9 |
Renewable generation |  | 193.3 |  |  | — |
Natural gas storage |  | 244.8 |  |  | 244.8 |
Net non-utility energy infrastructure |  | 3,682.5 |  |  | 3,460.7 |
Corporate services |  | 171.0 |  |  | 169.6 |
Other |  | 127.1 |  |  | 166.9 |
Less: Accumulated depreciation |  | 731.5 |  |  | 671.3 |
Net |  | 3,249.1 |  |  | 3,125.9 |
CWIP |  | 82.5 |  |  | 157.4 |
Net non-utility and other property, plant, and equipment |  | 3,331.6 |  |  | 3,283.3 |
Total property, plant, and equipment |  | $ | 22,000.9 |  |  | $ | 21,347.0 |
Schedule of changes to our severance liability | In December 2017, a severance liability in the amount of $29.4 million was recorded in other current liabilities on our balance sheets within the Wisconsin segment related to these plant retirements.
(in millions) |  |
Severance liability at December 31, 2017 |  | $ | 29.4 |
Severance payments |  | (10.7 | )
Other |  | (3.0 | )
Total severance liability at December 31, 2018 |  | $ | 15.7 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition Schedule of changes to our severance liability [Table Text Block] + References No definition available. + Details
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