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SHORT-TERM DEBT AND LINES OF CREDIT
9 Months Ended
Sep. 30, 2019
Short-term Debt [Abstract]  
SHORT-TERM DEBT AND LINES OF CREDIT SHORT-TERM DEBT AND LINES OF CREDIT

The following table shows our short-term borrowings and their corresponding weighted-average interest rates:
(in millions, except percentages)
 
September 30, 2019
 
December 31, 2018
Commercial paper
 
 
 
 
Amount outstanding
 
$
686.4

 
$
1,440.1

Weighted-average interest rate on amounts outstanding
 
2.23
%
 
2.92
%


Our average amount of commercial paper borrowings based on daily outstanding balances during the nine months ended September 30, 2019 was $1,190.7 million with a weighted-average interest rate during the period of 2.67%.

The information in the table below relates to our revolving credit facilities used to support our commercial paper borrowing programs, including available capacity under these facilities:
(in millions)
 
Maturity
 
September 30, 2019
WEC Energy Group
 
October 2022
 
$
1,200.0

WE
 
October 2022
 
500.0

WPS
 
October 2022
 
400.0

WG
 
October 2022
 
350.0

PGL
 
October 2022
 
350.0

Total short-term credit capacity
 
 
 
$
2,800.0

Less:
 
 
 
 

Letters of credit issued inside credit facilities
 
 
 
$
2.5

Commercial paper outstanding
 
 
 
686.4

Available capacity under existing credit facility
 
 
 
$
2,111.1