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DEBT - SCHEDULE OF LONG-TERM DEBT (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Sep. 30, 2023
--- | --- | ---
Debt Instrument [Line Items] |  |
Meter financing obligation | $ 16,026 | $ 22,875
Total long-term debt | 2,879,464 | 2,768,017
NJNG |  |
Debt Instrument [Line Items] |  |
Less: Debt issuance costs | (10,899) | (9,770)
Less: Current maturities of long-term debt | (58,649) | (78,477)
Total long-term debt | 1,609,871 | 1,410,950
NJR |  |
Debt Instrument [Line Items] |  |
Less: Debt issuance costs | (3,011) | (3,656)
Less: Current maturities of long-term debt | (100,000) | 0
Total long-term debt | 1,016,989 | 1,116,344
CEV |  |
Debt Instrument [Line Items] |  |
Long-term debt | 282,962 | 278,401
Less: Current maturities of long-term debt | (30,358) | (37,678)
Total CEV long-term debt | 252,604 | 240,723
Meter financing obligation | NJNG |  |
Debt Instrument [Line Items] |  |
Meter financing obligation | $ 31,574 | 31,352
First Mortgage Bonds | Series OO | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.00% |
Long-term debt | $ 46,500 | 46,500
First Mortgage Bonds | Series PP | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.15% |
Long-term debt | $ 50,000 | 50,000
First Mortgage Bonds | Series QQ | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.58% |
Long-term debt | $ 0 | 70,000
First Mortgage Bonds | Series RR | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 4.61% |
Long-term debt | $ 55,000 | 55,000
First Mortgage Bonds | Series SS | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 2.82% |
Long-term debt | $ 50,000 | 50,000
First Mortgage Bonds | Series TT | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.66% |
Long-term debt | $ 100,000 | 100,000
First Mortgage Bonds | Series UU | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.63% |
Long-term debt | $ 125,000 | 125,000
First Mortgage Bonds | Series VV | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 4.01% |
Long-term debt | $ 125,000 | 125,000
First Mortgage Bonds | Series WW | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.50% |
Long-term debt | $ 10,300 | 10,300
First Mortgage Bonds | Series XX | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.38% |
Long-term debt | $ 10,500 | 10,500
First Mortgage Bonds | Series YY | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 2.45% |
Long-term debt | $ 15,000 | 15,000
First Mortgage Bonds | Series ZZ | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.76% |
Long-term debt | $ 100,000 | 100,000
First Mortgage Bonds | Series AAA | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.86% |
Long-term debt | $ 85,000 | 85,000
First Mortgage Bonds | Series BBB | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 2.75% |
Long-term debt | $ 9,545 | 9,545
First Mortgage Bonds | Series CCC | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.00% |
Long-term debt | $ 41,000 | 41,000
First Mortgage Bonds | Series DDD | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.13% |
Long-term debt | $ 50,000 | 50,000
First Mortgage Bonds | Series EEE | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.13% |
Long-term debt | $ 50,000 | 50,000
First Mortgage Bonds | Series FFF | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.33% |
Long-term debt | $ 25,000 | 25,000
First Mortgage Bonds | Series GGG | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 2.87% |
Long-term debt | $ 25,000 | 25,000
First Mortgage Bonds | Series HHH | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 2.97% |
Long-term debt | $ 50,000 | 50,000
First Mortgage Bonds | Series III | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 2.97% |
Long-term debt | $ 50,000 | 50,000
First Mortgage Bonds | Series JJJ | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.07% |
Long-term debt | $ 50,000 | 50,000
First Mortgage Bonds | Series LLL | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 4.37% |
Long-term debt | $ 50,000 | 50,000
First Mortgage Bonds | Series MMM | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 4.71% |
Long-term debt | $ 50,000 | 50,000
First Mortgage Bonds | Series NNN | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 5.47% |
Long-term debt | $ 125,000 | 125,000
First Mortgage Bonds | Series OOO | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 5.56% |
Long-term debt | $ 50,000 | 50,000
First Mortgage Bonds | Series PPP | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 5.85% |
Long-term debt | $ 50,000 | 0
First Mortgage Bonds | Series QQQ | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 5.82% |
Long-term debt | $ 125,000 | 0
First Mortgage Bonds | Series RRR | NJNG |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 5.49% |
Long-term debt | $ 75,000 | 0
Unsecured senior notes 3.48% | NJR |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.48% |
Long-term debt | $ 100,000 | 100,000
Unsecured senior notes 3.54% | NJR |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.54% |
Long-term debt | $ 100,000 | 100,000
Unsecured senior notes 3.96% | NJR |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.96% |
Long-term debt | $ 100,000 | 100,000
Unsecured senior notes 3.29% | NJR |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.29% |
Long-term debt | $ 150,000 | 150,000
Unsecured senior note 3.50% | NJR |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.50% |
Long-term debt | $ 130,000 | 130,000
Unsecured senior note 3.60% | NJR |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.60% |
Long-term debt | $ 130,000 | 130,000
Unsecured senior note 3.13% | NJR |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.13% |
Long-term debt | $ 120,000 | 120,000
Unsecured senior notes 3.25% | NJR |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.25% |
Long-term debt | $ 80,000 | 80,000
Unsecured Senior Notes 4.38% | NJR |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 4.38% |
Long-term debt | $ 110,000 | 110,000
Unsecured Senior Notes 3.64% | NJR |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 3.64% |
Long-term debt | $ 50,000 | 50,000
Unsecured Senior Notes 6.14%, Maturing In 2032 | NJR |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 6.14% |
Long-term debt | $ 50,000 | $ 50,000

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