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DEBT - CREDIT FACILITIES NARRATIVE (Details) - USD ($) | Apr. 24, 2020 | Oct. 09, 2019 | Jun. 30, 2020 | Dec. 13, 2019 | Sep. 30, 2019
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Bridge Loan |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Face amount |  | $ 350,000,000 |  |  |
Debt, current |  |  | $ 137,100,000 |  |
Bridge Loan | Debt Instrument, Interest Rate, First 180 Days |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Basis spread on variable rate |  | 0.875% |  |  |
Bridge Loan | Debt Instrument, Interest Rate, After 180 Days |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Basis spread on variable rate |  | 1.075% |  |  |
Revolving Credit Facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Debt instrument, term | 364 days |  |  |  |
Bank revolving credit facilities | $ 250,000,000 |  |  |  |
Term of credit facility before conversion | 6 months |  |  |  |
Revolving Credit Facility | LIBOR |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Basis spread on variable rate | 1.625% |  |  |  |
NJR | Credit Facilities Due April 2021 | Revolving Credit Facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Bank revolving credit facilities |  |  | $ 250,000,000 | $ 150,000,000 | $ 0

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- Definition Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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