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Segment Information | 12 Months Ended
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Dec. 31, 2017
Segment Reporting [Abstract] |
SEGMENT INFORMATION | SEGMENT INFORMATION At December 31, 2017, we reported six segments, which are described below.
• | The Wisconsin segment includes the electric and natural gas utility operations of WE, WG, WPS, and UMERC.
• | The Illinois segment includes the natural gas utility and non-utility operations of PGL and NSG.
• | The other states segment includes the natural gas utility and non-utility operations of MERC and MGU.
• | The electric transmission segment includes our approximate 60% ownership interest in ATC, a for-profit, electric transmission company regulated by the FERC and certain state regulatory commissions.
• | Following the acquisition of Bluewater, our We Power segment was renamed the non-utility energy infrastructure segment. This segment includes We Power, which owns and leases generating facilities to WE, and Bluewater, which owns underground natural gas storage facilities in Michigan. See Note 2, Acquisitions, for more information on the Bluewater transaction.
• | The corporate and other segment includes the operations of the WEC Energy Group holding company, the Integrys holding company, the PELLC holding company, Wispark, Bostco, Wisvest, WECC, WBS, PDL, and ITF. In the first quarter of 2017, we sold substantially all of the remaining assets of Bostco and in the second quarter of 2016, we sold certain assets of Wisvest. The sale of ITF was completed in the first quarter of 2016. See Note 3, Dispositions, for more information on these sales.
All of our operations and assets are located within the United States. The following tables show summarized financial information related to our reportable segments for the years ended December 31, 2017, 2016, and 2015.
|  | Utility Operations |  |  |  |  |  |  |  |  |  |
2017 (in millions) |  | Wisconsin |  | Illinois |  | Other States |  | Total Utility Operations |  | Electric Transmission |  | Non-Utility Energy Infrastructure |  | Corporate and Other |  | Reconciling Eliminations |  | WEC Energy Group Consolidated
External revenues |  | $ | 5,829.2 |  |  | $ | 1,355.5 |  |  | $ | 411.2 |  |  | $ | 7,595.9 |  |  | $ | — |  |  | $ | 38.9 |  |  | $ | 13.7 |  |  | $ | — |  |  | $ | 7,648.5 |
Intersegment revenues |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 446.3 |  |  | — |  |  | (446.3 | ) |  | — |
Other operation and maintenance |  | 1,912.5 |  |  | 471.1 |  |  | 101.3 |  |  | 2,484.9 |  |  | — |  |  | 7.3 |  |  | (4.1 | ) |  | (441.1 | ) |  | 2,047.0 |
Depreciation and amortization |  | 523.9 |  |  | 152.6 |  |  | 24.8 |  |  | 701.3 |  |  | — |  |  | 71.4 |  |  | 25.9 |  |  | — |  |  | 798.6 |
Operating income (loss) |  | 1,065.9 |  |  | 273.0 |  |  | 54.2 |  |  | 1,393.1 |  |  | — |  |  | 400.5 |  |  | (8.4 | ) |  | — |  |  | 1,785.2 |
Equity in earnings of transmission affiliates |  | — |  |  | — |  |  | — |  |  | — |  |  | 154.3 |  |  | — |  |  | — |  |  | — |  |  | 154.3 |
Interest expense |  | 193.7 |  |  | 45.0 |  |  | 8.7 |  |  | 247.4 |  |  | — |  |  | 62.8 |  |  | 107.3 |  |  | (1.8 | ) |  | 415.7 |
Capital expenditures |  | 1,152.3 |  |  | 545.2 |  |  | 74.5 |  |  | 1,772.0 |  |  | — |  |  | 35.4 |  |  | 152.1 |  |  | — |  |  | 1,959.5 |
Total assets * |  | 22,237.1 |  |  | 6,144.7 |  |  | 1,067.8 |  |  | 29,449.6 |  |  | 1,593.4 |  |  | 2,992.8 |  |  | 953.6 |  |  | (3,398.9 | ) |  | 31,590.5 |
* | Total assets at December 31, 2017 reflect an elimination of $2,038.1 million for all lease activity between We Power and WE.
|  | Utility Operations |  |  |  |  |  |  |  |  |  |
2016 (in millions) |  | Wisconsin |  | Illinois |  | Other States |  | Total Utility Operations |  | Electric Transmission |  | Non-Utility Energy Infrastructure |  | Corporate and Other |  | Reconciling Eliminations |  | WEC Energy Group Consolidated
External revenues |  | $ | 5,805.4 |  |  | $ | 1,242.2 |  |  | $ | 376.5 |  |  | $ | 7,424.1 |  |  | $ | — |  |  | $ | 24.9 |  |  | $ | 23.3 |  |  | $ | — |  |  | $ | 7,472.3 |
Intersegment revenues |  | 0.3 |  |  | — |  |  | — |  |  | 0.3 |  |  | — |  |  | 423.3 |  |  | — |  |  | (423.6 | ) |  | — |
Other operation and maintenance |  | 2,025.4 |  |  | 485.1 |  |  | 110.1 |  |  | 2,620.6 |  |  | — |  |  | 4.3 |  |  | (15.8 | ) |  | (423.6 | ) |  | 2,185.5 |
Depreciation and amortization |  | 496.6 |  |  | 134.0 |  |  | 21.1 |  |  | 651.7 |  |  | — |  |  | 68.3 |  |  | 42.6 |  |  | — |  |  | 762.6 |
Operating income (loss) |  | 1,027.0 |  |  | 239.6 |  |  | 49.9 |  |  | 1,316.5 |  |  | — |  |  | 375.6 |  |  | (10.0 | ) |  | — |  |  | 1,682.1 |
Equity in earnings of transmission affiliates |  | — |  |  | — |  |  | — |  |  | — |  |  | 146.5 |  |  | — |  |  | — |  |  | — |  |  | 146.5 |
Interest expense |  | 180.9 |  |  | 38.9 |  |  | 8.5 |  |  | 228.3 |  |  | — |  |  | 62.1 |  |  | 120.9 |  |  | (8.6 | ) |  | 402.7 |
Capital expenditures |  | 910.9 |  |  | 293.2 |  |  | 59.5 |  |  | 1,263.6 |  |  | — |  |  | 62.3 |  |  | 97.8 |  |  | — |  |  | 1,423.7 |
Total assets * |  | 21,730.7 |  |  | 5,714.6 |  |  | 995.1 |  |  | 28,440.4 |  |  | 1,476.9 |  |  | 2,777.1 |  |  | 778.0 |  |  | (3,349.2 | ) |  | 30,123.2 |
* | Total assets at December 31, 2016 reflect an elimination of $2,029.5 million for all lease activity between We Power and WE.
|  | Utility Operations |  |  |  |  |  |  |  |  |  |
2015 (in millions) |  | Wisconsin |  | Illinois |  | Other States |  | Total Utility Operations |  | Electric Transmission |  | Non-Utility Energy Infrastructure |  | Corporate and Other |  | Reconciling Eliminations |  | WEC Energy Group Consolidated
External revenues |  | $ | 5,186.1 |  |  | $ | 503.4 |  |  | $ | 149.3 |  |  | $ | 5,838.8 |  |  | $ | — |  |  | $ | 40.0 |  |  | $ | 47.3 |  |  | $ | — |  |  | $ | 5,926.1 |
Intersegment revenues |  | 5.0 |  |  | — |  |  | — |  |  | 5.0 |  |  | — |  |  | 405.2 |  |  | — |  |  | (410.2 | ) |  | — |
Other operation and maintenance |  | 1,741.0 |  |  | 219.6 |  |  | 50.0 |  |  | 2,010.6 |  |  | — |  |  | 4.3 |  |  | 103.7 |  |  | (409.3 | ) |  | 1,709.3 |
Depreciation and amortization |  | 408.6 |  |  | 63.3 |  |  | 10.0 |  |  | 481.9 |  |  | — |  |  | 67.5 |  |  | 12.4 |  |  | — |  |  | 561.8 |
Operating income (loss) |  | 884.2 |  |  | 78.1 |  |  | 6.0 |  |  | 968.3 |  |  | — |  |  | 373.4 |  |  | (91.2 | ) |  | — |  |  | 1,250.5 |
Equity in earnings of transmission affiliates |  | — |  |  | — |  |  | — |  |  | — |  |  | 96.1 |  |  | — |  |  | — |  |  | — |  |  | 96.1 |
Interest expense |  | 157.1 |  |  | 19.9 |  |  | 5.1 |  |  | 182.1 |  |  | — |  |  | 63.4 |  |  | 91.0 |  |  | (5.1 | ) |  | 331.4 |
Capital expenditures |  | 950.3 |  |  | 194.4 |  |  | 34.7 |  |  | 1,179.4 |  |  | — |  |  | 53.4 |  |  | 33.4 |  |  | — |  |  | 1,266.2 |
Total assets * |  | 21,113.5 |  |  | 5,462.9 |  |  | 918.0 |  |  | 27,494.4 |  |  | 1,381.0 |  |  | 2,779.0 |  |  | 1,132.5 |  |  | (3,431.7 | ) |  | 29,355.2 |
* | Total assets at December 31, 2015 reflect an elimination of $2,105.3 million for all lease activity between We Power and WE.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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