General Information	3 Months Ended
Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
GENERAL INFORMATION	GENERAL INFORMATION On June 29, 2015, Wisconsin Energy Corporation acquired Integrys and changed its name to WEC Energy Group, Inc. WEC Energy Group serves approximately 1.6 million electric customers and 2.8 million natural gas customers, and it owns approximately 60% of ATC. See Note 2, Acquisition, for more information. As used in these notes, the term "financial statements" refers to the condensed consolidated financial statements. This includes the income statements, statements of comprehensive income, balance sheets, and statements of cash flows, unless otherwise noted. In this report, when we refer to "the Company," "us," "we," "our," or "ours," we are referring to WEC Energy Group and all of its subsidiaries. We have prepared the unaudited interim financial statements presented in this Form 10-Q pursuant to the rules and regulations of the SEC and GAAP. Accordingly, these financial statements do not include all of the information and footnotes required by GAAP for annual financial statements. These financial statements should be read in conjunction with the consolidated financial statements and footnotes in our Annual Report on Form 10-K for the year ended December 31, 2015. Financial results for an interim period may not give a true indication of results for the year. In particular, the results of operations for the three months ended March 31, 2016, are not necessarily indicative of expected results for 2016 due to seasonal variations and other factors. In management's opinion, we have included all adjustments, normal and recurring in nature, necessary for a fair presentation of our financial results. Reclassifications On the income statements for the quarter ended March 31, 2015, we reclassified $2.5 million from treasury grant to depreciation and amortization. We also reclassified an insignificant amount from interest expense to preferred stock dividends of subsidiaries on the income statements for the quarter ended March 31, 2015. These reclassifications were made to be consistent with the current period presentation on the income statements. On the statements of cash flows for the quarter ended March 31, 2015, we reclassified $0.9 million from depreciation and amortization to other operating activities. In addition, we reclassified $3.7 million of non-qualified pension and OPEB contributions from other operating activities to contributions and payments related to pension and OPEB plans on the statements of cash flows for the quarter ended March 31, 2015. We also reclassified $3.7 million from other investing activities to capital expenditures on the statements of cash flows for the quarter ended March 31, 2015. An insignificant amount of preferred stock dividends of subsidiaries was also reclassified from other financing activities to net income on the statements of cash flows for the quarter ended March 31, 2015. These reclassifications were made to be consistent with the current period presentation on the statements of cash flows. During the third quarter of 2015, following the acquisition of Integrys, we reorganized our business segments. All prior period amounts impacted by this change were reclassified to conform to the new presentation. See Note 14, Segment Information, for more information on our business segments.

GENERAL INFORMATION

On June 29, 2015, Wisconsin Energy Corporation acquired Integrys and changed its name to WEC Energy Group, Inc. WEC Energy Group serves approximately 1.6 million electric customers and 2.8 million natural gas customers, and it owns approximately 60% of ATC. See Note 2, Acquisition, for more information.

As used in these notes, the term "financial statements" refers to the condensed consolidated financial statements. This includes the income statements, statements of comprehensive income, balance sheets, and statements of cash flows, unless otherwise noted. In this report, when we refer to "the Company," "us," "we," "our," or "ours," we are referring to WEC Energy Group and all of its subsidiaries.

We have prepared the unaudited interim financial statements presented in this Form 10-Q pursuant to the rules and regulations of the SEC and GAAP. Accordingly, these financial statements do not include all of the information and footnotes required by GAAP for annual financial statements. These financial statements should be read in conjunction with the consolidated financial statements and footnotes in our Annual Report on Form 10-K for the year ended December 31, 2015. Financial results for an interim period may not give a true indication of results for the year. In particular, the results of operations for the three months ended March 31, 2016, are not necessarily indicative of expected results for 2016 due to seasonal variations and other factors.

In management's opinion, we have included all adjustments, normal and recurring in nature, necessary for a fair presentation of our financial results.

Reclassifications

On the income statements for the quarter ended March 31, 2015, we reclassified $2.5 million from treasury grant to depreciation and amortization. We also reclassified an insignificant amount from interest expense to preferred stock dividends of subsidiaries on the income statements for the quarter ended March 31, 2015. These reclassifications were made to be consistent with the current period presentation on the income statements.

On the statements of cash flows for the quarter ended March 31, 2015, we reclassified $0.9 million from depreciation and amortization to other operating activities. In addition, we reclassified $3.7 million of non-qualified pension and OPEB contributions from other operating activities to contributions and payments related to pension and OPEB plans on the statements of cash flows for the quarter ended March 31, 2015. We also reclassified $3.7 million from other investing activities to capital expenditures on the statements of cash flows for the quarter ended March 31, 2015. An insignificant amount of preferred stock dividends of subsidiaries was also reclassified from other financing activities to net income on the statements of cash flows for the quarter ended March 31, 2015. These reclassifications were made to be consistent with the current period presentation on the statements of cash flows.

During the third quarter of 2015, following the acquisition of Integrys, we reorganized our business segments. All prior period amounts impacted by this change were reclassified to conform to the new presentation. See Note 14, Segment Information, for more information on our business segments.