Long Term Debt	6 Months Ended
Jun. 30, 2015
Long-term Debt, Unclassified [Abstract]
LONG TERM DEBT	LONG-TERM DEBT Our outstanding long-term debt, including current maturities as of June 30, 2015, includes approximately $3.1 billion of Integrys debt assumed on June 29, 2015. This amount includes $45.7 million of fair value adjustments recorded in connection with purchase accounting, which will be amortized over the estimated remaining life of the debt and will not be a part of future principal payments. For additional information on the acquisition, see Note 2 -- Acquisition in the Notes to Consolidated Condensed Financial Statements. In June 2015, WEC Energy Group issued $300 million of 1.65% Senior Notes due June 15, 2018, $400 million of 2.45% Senior Notes due June 15, 2020, and $500 million of 3.55% Senior Notes due June 15, 2025. The net proceeds were used to pay the cash consideration for the acquisition of Integrys and related transaction costs, and for general corporate purposes. In July 2015, Integrys tendered an offer to repurchase all $55.0 million outstanding of its 8.00% Senior Notes due June 1, 2016. The $55.0 million balance of these notes was included in the current portion of long-term debt on our balance sheet at June 30, 2015. In May 2015, Wisconsin Electric issued $250 million of 3.10% Debentures due June 1, 2025. The net proceeds were used to repay short-term debt and for general corporate purposes. In May 2014, Wisconsin Electric issued $250 million of 4.25% Debentures due June 1, 2044. The net proceeds were used to repay short-term debt and for general corporate purposes. On April 1, 2014, Wisconsin Electric used short-term borrowings to retire $300 million of long-term debt that matured.

LONG-TERM DEBT

Our outstanding long-term debt, including current maturities as of June 30, 2015, includes approximately $3.1 billion of Integrys debt assumed on June 29, 2015. This amount includes $45.7 million of fair value adjustments recorded in connection with purchase accounting, which will be amortized over the estimated remaining life of the debt and will not be a part of future principal payments. For additional information on the acquisition, see Note 2 -- Acquisition in the Notes to Consolidated Condensed Financial Statements.

In June 2015, WEC Energy Group issued $300 million of 1.65% Senior Notes due June 15, 2018, $400 million of 2.45% Senior Notes due June 15, 2020, and $500 million of 3.55% Senior Notes due June 15, 2025. The net proceeds were used to pay the cash consideration for the acquisition of Integrys and related transaction costs, and for general corporate purposes.

In July 2015, Integrys tendered an offer to repurchase all $55.0 million outstanding of its 8.00% Senior Notes due June 1, 2016. The $55.0 million balance of these notes was included in the current portion of long-term debt on our balance sheet at June 30, 2015.

In May 2015, Wisconsin Electric issued $250 million of 3.10% Debentures due June 1, 2025. The net proceeds were used to repay short-term debt and for general corporate purposes.

In May 2014, Wisconsin Electric issued $250 million of 4.25% Debentures due June 1, 2044. The net proceeds were used to repay short-term debt and for general corporate purposes.

On April 1, 2014, Wisconsin Electric used short-term borrowings to retire $300 million of long-term debt that matured.