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Operating Revenues | 12 Months Ended
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Dec. 31, 2018
Revenue from Contract with Customer [Abstract] |
OPERATING REVENUES | OPERATING REVENUES Disaggregation of Operating Revenues The following tables present our operating revenues disaggregated by revenue source. We disaggregate revenues into categories that depict how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. For our segments, revenues are further disaggregated by electric and natural gas operations and then by customer class. Each customer class within our electric and natural gas operations have different expectations of service, energy and demand requirements, and are impacted by regulatory activities within their jurisdictions. Comparable amounts have not been presented for the years ended December 31, 2017 and 2016, due to our adoption of ASU 2014-09, Revenues from Contracts with Customers, under the modified retrospective method. See Note 1(d), Operating Revenues, for more information about our significant accounting policies related to operating revenues.
(in millions) |  | Wisconsin |  | Illinois |  | Other States |  | Total Utility Operations |  | Electric Transmission |  | Non-Utility Energy Infrastructure |  | Corporate and Other |  | Reconciling Eliminations |  | WEC Energy Group Consolidated
Year ended December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Electric |  | $ | 4,432.4 |  |  | $ | — |  |  | $ | — |  |  | $ | 4,432.4 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 4,432.4 |
Natural gas |  | 1,350.6 |  |  | 1,406.9 |  |  | 428.4 |  |  | 3,185.9 |  |  | — |  |  | 45.4 |  | * | — |  |  | (36.4 | ) |  | 3,194.9 |
Total utility revenues |  | 5,783.0 |  |  | 1,406.9 |  |  | 428.4 |  |  | 7,618.3 |  |  | — |  |  | 45.4 |  |  | — |  |  | (36.4 | ) |  | 7,627.3 |
Other non-utility revenues |  | — |  |  | 0.2 |  |  | 16.1 |  |  | 16.3 |  |  | — |  |  | 34.6 |  |  | 7.9 |  |  | (5.8 | ) |  | 53.0 |
Total revenues from contracts with customers |  | 5,783.0 |  |  | 1,407.1 |  |  | 444.5 |  |  | 7,634.6 |  |  | — |  |  | 80.0 |  |  | 7.9 |  |  | (42.2 | ) |  | 7,680.3 |
Other operating revenues |  | 11.7 |  |  | (7.1 | ) |  | (6.3 | ) |  | (1.7 | ) |  | — |  |  | 388.4 |  |  | 0.8 |  |  | (388.3 | ) |  | (0.8 | )
Total operating revenues |  | $ | 5,794.7 |  |  | $ | 1,400.0 |  |  | $ | 438.2 |  |  | $ | 7,632.9 |  |  | $ | — |  |  | $ | 468.4 |  |  | $ | 8.7 |  |  | $ | (430.5 | ) |  | $ | 7,679.5 |
* Represents natural gas operating revenues from Bluewater. Revenues from Contracts with Customers Electric Utility Operating Revenues The following table disaggregates electric utility operating revenues into customer class:
|  | Electric Utility Operating Revenues
(in millions) |  | Year ended December 31, 2018
Residential |  | $ | 1,636.3 |
Small commercial and industrial |  | 1,408.6 |
Large commercial and industrial |  | 912.2 |
Other |  | 29.9 |
Total retail revenues |  | 3,987.0 |
Wholesale |  | 210.1 |
Resale |  | 192.2 |
Steam |  | 24.1 |
Other utility revenues |  | 19.0 |
Total electric utility operating revenues |  | $ | 4,432.4 |
Natural Gas Utility Operating Revenues The following table disaggregates natural gas utility operating revenues into customer class:
(in millions) |  | Wisconsin |  | Illinois |  | Other States |  | Total Natural Gas Utility Operating Revenues
Year Ended December 31, 2018 |  |  |  |  |  |  |  |  |  |  |
Residential |  | $ | 834.5 |  |  | $ | 877.5 |  |  | $ | 263.3 |  |  | $ | 1,975.3 |
Commercial and industrial |  | 436.7 |  |  | 266.9 |  |  | 140.0 |  |  | 843.6 |
Total retail revenues |  | 1,271.2 |  |  | 1,144.4 |  |  | 403.3 |  |  | 2,818.9 |
Transport |  | 70.8 |  |  | 244.1 |  |  | 31.8 |  |  | 346.7 |
Other utility revenues * |  | 8.6 |  |  | 18.4 |  |  | (6.7 | ) |  | 20.3 |
Total natural gas utility operating revenues |  | $ | 1,350.6 |  |  | $ | 1,406.9 |  |  | $ | 428.4 |  |  | $ | 3,185.9 |
* | Includes amounts collected from (refunded to) customers for purchased gas adjustment costs.
Other Non-Utility Operating Revenues Other non-utility operating revenues consist primarily of the following:
(in millions) |  | Year Ended December 31, 2018
We Power revenues |  | $ | 25.3 |
Appliance service revenues |  | 15.9 |
Distributed renewable solar project revenues |  | 8.0 |
Wind generation revenues |  | 3.6 |
Other |  | 0.2 |
Total other non-utility operating revenues |  | $ | 53.0 |
Other Operating Revenues Other operating revenues consist primarily of the following:
(in millions) |  | Year Ended December 31, 2018
Alternative revenues * |  | $ | (45.6 | )
Late payment charges |  | 40.3 |
Leases |  | 4.5 |
Total other operating revenues |  | $ | (0.8 | )
* | Negative amounts can result from alternative revenues being reversed to revenues from contracts with customers as the customer is billed for these alternative revenues. Negative amounts can also result from revenues to be refunded to customers subject to decoupling mechanisms and wholesale true-ups, as discussed in Note 1(d), Operating Revenues.

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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