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Operating Revenues - Other Non-Utility Operating Revenues (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Revenues from contracts with customers |  |
Disaggregation of Operating Revenues |  |
Revenues from contracts with customers | $ 7,449.3 | $ 7,680.3
Other non-utility revenues | We Power revenues |  |
Disaggregation of Operating Revenues |  |
Contract with Customer, Liability, Revenue Recognized | 25.4 | 25.3
Other non-utility revenues | Revenues from contracts with customers |  |
Disaggregation of Operating Revenues |  |
Revenues from contracts with customers | 70.2 | 53.0
Other non-utility revenues | Revenues from contracts with customers | We Power revenues |  |
Disaggregation of Operating Revenues |  |
Revenues from contracts with customers |  | 25.3
Other non-utility revenues | Revenues from contracts with customers | Distributed renewable solar project revenues |  |
Disaggregation of Operating Revenues |  |
Revenues from contracts with customers | 4.0 | 8.0
Other non-utility revenues | Revenues from contracts with customers | Other |  |
Disaggregation of Operating Revenues |  |
Revenues from contracts with customers | 0.2 | 0.2
Transferred over time | Other non-utility revenues | Revenues from contracts with customers | Wind generation revenues |  |
Disaggregation of Operating Revenues |  |
Revenues from contracts with customers | 24.0 | 3.6
Transferred over time | Other non-utility revenues | Revenues from contracts with customers | Appliance service repairs |  |
Disaggregation of Operating Revenues |  |
Revenues from contracts with customers | $ 16.6 | $ 15.9

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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045 + Details
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