LONG TERM DEBT	6 Months Ended
Jun. 30, 2018
Long-term Debt, Unclassified [Abstract]
Long Term Debt	LONG-TERM DEBT WEC Energy Group, Inc. In June 2018, we issued $600.0 million of 3.375% Senior Notes due June 15, 2021. The net proceeds were used to repay short-term debt, including short-term debt used to redeem at par all $114.9 million outstanding principal amount of Integrys' 2006 Junior Notes, to repay all $300.0 million of our 1.65% Senior Notes that matured in June 2018, and for working capital and general corporate purposes. Wisconsin Electric Power Company In July 2018, WE redeemed all $80.0 million outstanding of its series of tax-exempt pollution control refunding bonds. Since August 2009, the bonds were outstanding, but were not reported in our long-term debt because they were held by WE. In June 2018, WE's $250.0 million of 1.70% Debentures matured, and the outstanding principal was paid with proceeds received from issuing commercial paper. Integrys Holding, Inc. In May 2018, Integrys redeemed at par all $114.9 million outstanding of its 2006 Junior Notes. Interest Rate Swap In July 2018, we executed two interest rate swaps with a combined notional value of $250.0 million to hedge the variable interest rate risk associated with our 2007 Junior Notes. The swaps will provide a fixed interest rate of 4.9765% on $250.0 million of the $500.0 million outstanding of 2007 Junior Notes through November 15, 2021.

LONG TERM DEBT

6 Months Ended

Jun. 30, 2018

Long-term Debt, Unclassified [Abstract]

LONG-TERM DEBT

WEC Energy Group, Inc.

In June 2018, we issued $600.0 million of 3.375% Senior Notes due June 15, 2021. The net proceeds were used to repay short-term debt, including short-term debt used to redeem at par all $114.9 million outstanding principal amount of Integrys' 2006 Junior Notes, to repay all $300.0 million of our 1.65% Senior Notes that matured in June 2018, and for working capital and general corporate purposes.

Wisconsin Electric Power Company

In July 2018, WE redeemed all $80.0 million outstanding of its series of tax-exempt pollution control refunding bonds. Since August 2009, the bonds were outstanding, but were not reported in our long-term debt because they were held by WE.

In June 2018, WE's $250.0 million of 1.70% Debentures matured, and the outstanding principal was paid with proceeds received from issuing commercial paper.

Integrys Holding, Inc.

In May 2018, Integrys redeemed at par all $114.9 million outstanding of its 2006 Junior Notes.

Interest Rate Swap

In July 2018, we executed two interest rate swaps with a combined notional value of $250.0 million to hedge the variable interest rate risk associated with our 2007 Junior Notes. The swaps will provide a fixed interest rate of 4.9765% on $250.0 million of the $500.0 million outstanding of 2007 Junior Notes through November 15, 2021.