Acquisition	6 Months Ended
Jun. 30, 2014
Acquisition [Abstract]
Mergers, Acquisitions and Dispositions Disclosures [Text Block]	ACQUISITION On June 22, 2014, Wisconsin Energy and Integrys entered into an agreement and plan of merger (Merger Agreement) under which Wisconsin Energy will acquire Integrys (Acquisition). Integrys’ shareholders will receive 1.128 shares of Wisconsin Energy common stock and $18.58 in cash per Integrys share of common stock, with the total consideration valued at approximately $5.8 billion, based upon the value of our common stock as of June 30, 2014. The combined company will be named WEC Energy Group, Inc. The Acquisition is subject to several conditions, including, among others, approval of the shareholders of both Wisconsin Energy and Integrys, the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 (HSR Act), and the receipt of approvals from various government agencies, including the Federal Energy Regulatory Commission (FERC), Federal Communications Commission, Public Service Commission of Wisconsin (PSCW), Illinois Commerce Commission, Michigan Public Service Commission and Minnesota Public Utilities Commission. The cash consideration will be financed through the issuance of approximately $1.5 billion of debt at the holding company level. We anticipate the transaction closing in the second half of 2015.

ACQUISITION

On June 22, 2014, Wisconsin Energy and Integrys entered into an agreement and plan of merger (Merger Agreement) under which Wisconsin Energy will acquire Integrys (Acquisition). Integrys’ shareholders will receive 1.128 shares of Wisconsin Energy common stock and $18.58 in cash per Integrys share of common stock, with the total consideration valued at approximately $5.8 billion, based upon the value of our common stock as of June 30, 2014. The combined company will be named WEC Energy Group, Inc.

The Acquisition is subject to several conditions, including, among others, approval of the shareholders of both Wisconsin Energy and Integrys, the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 (HSR Act), and the receipt of approvals from various government agencies, including the Federal Energy Regulatory Commission (FERC), Federal Communications Commission, Public Service Commission of Wisconsin (PSCW), Illinois Commerce Commission, Michigan Public Service Commission and Minnesota Public Utilities Commission. The cash consideration will be financed through the issuance of approximately $1.5 billion of debt at the holding company level. We anticipate the transaction closing in the second half of 2015.