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DEBT (Tables)
9 Months Ended
Jun. 30, 2017
Debt Disclosure [Abstract]  
Schedule of Line of Credit Facilities
A summary of NJR's credit facility and NJNG's commercial paper program and credit facility are as follows:
(Thousands)
June 30,
2017
 
September 30,
2016
 
Expiration Dates
NJR
 
 
 
 
 
Bank revolving credit facilities (1)
$
425,000

 
$
425,000

 
September 2020
Notes outstanding at end of period
$
263,400

 
$
121,700

 
 
Weighted average interest rate at end of period
1.99
%
 
1.43
%
 
 
Amount available at end of period (2)
$
146,620

 
$
288,910

 
 
NJNG
 
 
 
 
 
Bank revolving credit facilities (3)
$
250,000

 
$
250,000

 
May 2019
Commercial paper outstanding at end of period
$

 
$

 
 
Weighted average interest rate at end of period
%
 
%
 
 
Amount available at end of period (4)
$
249,269

 
$
249,269

 
 
(1)
Committed credit facilities, which require commitment fees on the unused amounts.
(2)
Letters of credit outstanding total $15 million and $14.4 million for June 30, 2017 and September 30, 2016, respectively, which reduces amount available by the same amount.
(3)
Uncommitted credit facilities, which require no commitment fees.
(4)
Letters of credit outstanding total $731,000 for both June 30, 2017 and September 30, 2016, which reduces the amount available by the same amount.