INCOME TAXES	6 Months Ended
Mar. 31, 2019
Income Tax Disclosure [Abstract]
INCOME TAXES	11. INCOME TAXES ASC Topic 740, Income Taxes requires the use of an estimated annual effective tax rate for purposes of determining the income tax provision during interim reporting periods. In calculating its estimated annual effective tax rate, NJR considers forecasted annual pre-tax income and estimated permanent book versus tax differences, as well as tax credits associated with solar and wind projects. For investment tax credits, the estimate is based on solar projects that are probable of being completed and placed in service during the current fiscal year based on the best information available at each reporting period. For production tax credits, the estimate is based on the forecast of electricity produced during the current fiscal year based on the best information available at each reporting period. Adjustments to the effective tax rate and management's estimates will occur as information and assumptions change. Changes in tax laws or tax rates are recognized in the financial reporting period that includes the enactment date, the date in which the act is signed into law. NJR evaluates its tax positions to determine the appropriate accounting and recognition of potential future obligations associated with unrecognized tax benefits. During the six months ended March 31, 2019 and 2018, the Company determined there was no need to recognize any liabilities associated with uncertain tax positions. The Tax Act On December 22, 2017, the President signed into law the Tax Act. The law made several changes to the Internal Revenue Code of 1986, as amended, the most impactful to the Company of which was a reduction in the federal corporate income tax rate from 35 percent to 21 percent that became effective January 1, 2018. Since the Company's fiscal year end is September 30, it is required by the Internal Revenue Code to calculate a statutory rate based upon the federal tax rates in effect before and after the effective date of the change in the taxable year that includes the effective date. Accordingly, the Company applied a federal statutory tax rate of 24.5 percent during fiscal 2018 and as of October 1, 2018, uses the enacted rate of 21 percent. As a result of the changes associated with the Tax Act, the Company recognized a tax benefit of $58.5 million during the six months ended March 31, 2018. Effective Tax Rate The forecasted effective tax rates were (5.8) percent and 17.2 percent, for the six months ended March 31, 2019 and 2018, respectively. The decrease in the effective tax rate, when compared with the prior fiscal year, is due primarily to a decrease in forecasted pre-tax income combined with the lower federal statutory rate, and an increase in forecasted tax credits for the fiscal year ending September 30, 2019. Forecasted tax credits, net of deferred income taxes, were $45.2 million and $23.2 million for fiscal 2019 and 2018, respectively. To the extent there are discrete tax items that are not included in the forecasted effective tax rate, the actual effective tax rate will differ from the estimated annual effective tax rate. The Company recognized $1.3 million and $2.8 million during the six months ended March 31, 2019 and 2018, respectively, in excess tax benefits associated with the vesting of share-based awards, as a component of income tax (benefit) provision in its Unaudited Condensed Consolidated Statements of Operations. The six months ended March 31, 2018, also included the the changes associated with the Tax Act as previously discussed. As a result of these discrete items, NJR’s actual effective tax rate was (6.6) percent and (7.9) percent during the six months ended March 31, 2019 and 2018, respectively. Other Tax Items As of March 31, 2019 and September 30, 2018, the Company had federal income tax net operating losses of approximately $136.8 million. Federal net operating losses incurred before the implementation of the Tax Act can generally be carried back two years and forward 20 years and will begin to expire in fiscal 2036, with the remainder expiring by 2038. The Company expects to exercise its ability to carryback federal net operating losses to offset taxable income in prior periods. For the net operating losses it expects to carryback, the Company estimated the portion considered refundable and recorded receivables of approximately $23 million as of March 31, 2019 and September 30, 2018, as a component of other noncurrent assets on the Unaudited Condensed Consolidated Balance Sheets. Upon filing amended federal income tax returns to carryback its remaining federal net operating losses totaling $24.5 million, the Company will reduce its taxable income in those periods and recapture federal investment tax credits of the same amount that were previously utilized to offset taxable income. In addition, as of March 31, 2019 and September 30, 2018, the Company had ITC/PTC carryforwards of approximately $109.9 million and $121.1 million, respectively, which each have a life of 20 years. When the Company carries back the federal net operating losses noted above, it expects to recapture investment tax credits totaling $24.5 million. These recaptured tax credits are in addition to the $109.9 million and will be carried forward to offset future taxable income. The Company expects to utilize this entire carryforward, which would begin to expire in fiscal 2033. As of March 31, 2019 and September 30, 2018, the Company had state income tax net operating losses of approximately $385.4 million and $578.8 million, respectively. These state net operating losses have varying carry forward periods dictated by the state in which they were incurred. These state carry forward periods range from seven to 20 years and would begin to expire in fiscal 2021, with the majority expiring after 2035. On February 7, 2019, Clean Energy Ventures finalized the sale of its remaining wind assets. As a result of the sale, it is more likely than not that certain state net operating loss carryforwards will not be realizable prior to their expiration. The Company had a valuation allowance of $4 million as of March 31, 2019 and September 30, 2018, related to state net operating loss carryforwards in Montana, Iowa and Kansas. The remaining state income tax net operating losses are expected to be utilized prior to expiration. In March 2019, the IRS commenced an examination of the Company's federal income tax return for fiscal 2016. The State of New Jersey is conducting a general tax examination for fiscal years 2014 through 2017 related to NJRHS. All periods subsequent to those ended September 30, 2013 are statutorily open to examination.

11. INCOME TAXES

ASC Topic 740, Income Taxes requires the use of an estimated annual effective tax rate for purposes of determining the income tax provision during interim reporting periods. In calculating its estimated annual effective tax rate, NJR considers forecasted annual pre-tax income and estimated permanent book versus tax differences, as well as tax credits associated with solar and wind projects. For investment tax credits, the estimate is based on solar projects that are probable of being completed and placed in service during the current fiscal year based on the best information available at each reporting period. For production tax credits, the estimate is based on the forecast of electricity produced during the current fiscal year based on the best information available at each reporting period. Adjustments to the effective tax rate and management's estimates will occur as information and assumptions change.

Changes in tax laws or tax rates are recognized in the financial reporting period that includes the enactment date, the date in which the act is signed into law.

NJR evaluates its tax positions to determine the appropriate accounting and recognition of potential future obligations associated with unrecognized tax benefits. During the six months ended March 31, 2019 and 2018, the Company determined there was no need to recognize any liabilities associated with uncertain tax positions.

The Tax Act

On December 22, 2017, the President signed into law the Tax Act. The law made several changes to the Internal Revenue Code of 1986, as amended, the most impactful to the Company of which was a reduction in the federal corporate income tax rate from 35 percent to 21 percent that became effective January 1, 2018. Since the Company's fiscal year end is September 30, it is required by the Internal Revenue Code to calculate a statutory rate based upon the federal tax rates in effect before and after the effective date of the change in the taxable year that includes the effective date. Accordingly, the Company applied a federal statutory tax rate of 24.5 percent during fiscal 2018 and as of October 1, 2018, uses the enacted rate of 21 percent. As a result of the changes associated with the Tax Act, the Company recognized a tax benefit of $58.5 million during the six months ended March 31, 2018.

Effective Tax Rate

The forecasted effective tax rates were (5.8) percent and 17.2 percent, for the six months ended March 31, 2019 and 2018, respectively. The decrease in the effective tax rate, when compared with the prior fiscal year, is due primarily to a decrease in forecasted pre-tax income combined with the lower federal statutory rate, and an increase in forecasted tax credits for the fiscal year ending September 30, 2019. Forecasted tax credits, net of deferred income taxes, were $45.2 million and $23.2 million for fiscal 2019 and 2018, respectively.

To the extent there are discrete tax items that are not included in the forecasted effective tax rate, the actual effective tax rate will differ from the estimated annual effective tax rate. The Company recognized $1.3 million and $2.8 million during the six months ended March 31, 2019 and 2018, respectively, in excess tax benefits associated with the vesting of share-based awards, as a component of income tax (benefit) provision in its Unaudited Condensed Consolidated Statements of Operations. The six months ended March 31, 2018, also included the the changes associated with the Tax Act as previously discussed. As a result of these discrete items, NJR’s actual effective tax rate was (6.6) percent and (7.9) percent during the six months ended March 31, 2019 and 2018, respectively.

Other Tax Items

As of March 31, 2019 and September 30, 2018, the Company had federal income tax net operating losses of approximately $136.8 million. Federal net operating losses incurred before the implementation of the Tax Act can generally be carried back two years and forward 20 years and will begin to expire in fiscal 2036, with the remainder expiring by 2038. The Company expects to exercise its ability to carryback federal net operating losses to offset taxable income in prior periods.

For the net operating losses it expects to carryback, the Company estimated the portion considered refundable and recorded receivables of approximately $23 million as of March 31, 2019 and September 30, 2018, as a component of other noncurrent assets on the Unaudited Condensed Consolidated Balance Sheets. Upon filing amended federal income tax returns to carryback its remaining federal net operating losses totaling $24.5 million, the Company will reduce its taxable income in those periods and recapture federal investment tax credits of the same amount that were previously utilized to offset taxable income.

In addition, as of March 31, 2019 and September 30, 2018, the Company had ITC/PTC carryforwards of approximately $109.9 million and $121.1 million, respectively, which each have a life of 20 years. When the Company carries back the federal net operating losses noted above, it expects to recapture investment tax credits totaling $24.5 million. These recaptured tax credits are in addition to the $109.9 million and will be carried forward to offset future taxable income. The Company expects to utilize this entire carryforward, which would begin to expire in fiscal 2033.

As of March 31, 2019 and September 30, 2018, the Company had state income tax net operating losses of approximately $385.4 million and $578.8 million, respectively. These state net operating losses have varying carry forward periods dictated by the state in which they were incurred. These state carry forward periods range from seven to 20 years and would begin to expire in fiscal 2021, with the majority expiring after 2035.

On February 7, 2019, Clean Energy Ventures finalized the sale of its remaining wind assets. As a result of the sale, it is more likely than not that certain state net operating loss carryforwards will not be realizable prior to their expiration. The Company had a valuation allowance of $4 million as of March 31, 2019 and September 30, 2018, related to state net operating loss carryforwards in Montana, Iowa and Kansas. The remaining state income tax net operating losses are expected to be utilized prior to expiration.

In March 2019, the IRS commenced an examination of the Company's federal income tax return for fiscal 2016.

The State of New Jersey is conducting a general tax examination for fiscal years 2014 through 2017 related to NJRHS. All periods subsequent to those ended September 30, 2013 are statutorily open to examination.