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EMPLOYEE BENEFIT PLANS, DEFINED BENEFIT PLANS (Details) (USD $) | 12 Months Ended |  |  | 12 Months Ended |  |  | 12 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2014 US Equity Securities [Member] | Sep. 30, 2013 US Equity Securities [Member] | Sep. 30, 2012 US Equity Securities [Member] | Sep. 30, 2014 International Securities [Member] | Sep. 30, 2013 International Securities [Member] | Sep. 30, 2012 International Securities [Member] | Sep. 30, 2014 Fixed Income Securities [Member] | Sep. 30, 2013 Fixed Income Securities [Member] | Sep. 30, 2012 Fixed Income Securities [Member] | Sep. 30, 2013 Pension [Member] | Sep. 30, 2012 Pension [Member] | Sep. 30, 2011 Pension [Member] | Sep. 30, 2011 Pension [Member] Minimum [Member] | Sep. 30, 2011 Pension [Member] Maximum [Member] | Sep. 30, 2013 Pension Plans Excluding Pension Equalization Plan, Defined Benefit [Member] | Sep. 30, 2012 Pension Plans Excluding Pension Equalization Plan, Defined Benefit [Member] | Sep. 30, 2011 Pension Plans Excluding Pension Equalization Plan, Defined Benefit [Member] | Sep. 30, 2013 OPEB [Member] | Sep. 30, 2012 OPEB [Member] | Sep. 30, 2011 OPEB [Member] | Sep. 30, 2013 OPEB [Member] Minimum [Member] | Sep. 30, 2013 OPEB [Member] Maximum [Member] | Sep. 30, 2013 Regulatory Assets [Member] Pension [Member] | Sep. 30, 2012 Regulatory Assets [Member] Pension [Member] | Sep. 30, 2013 Regulatory Assets [Member] OPEB [Member] | Sep. 30, 2012 Regulatory Assets [Member] OPEB [Member] | Sep. 30, 2013 Accumulated Other Comprehensive Income, Location [Member] Pension [Member] | Sep. 30, 2012 Accumulated Other Comprehensive Income, Location [Member] Pension [Member] | Sep. 30, 2013 Accumulated Other Comprehensive Income, Location [Member] OPEB [Member] | Sep. 30, 2012 Accumulated Other Comprehensive Income, Location [Member] OPEB [Member]
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated future employer contributions over the next five years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,000,000 | $ 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Regulatory costs approved |  |  | 308,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Change in Benefit Obligation [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Benefit obligation at beginning of year |  |  |  |  |  |  |  |  |  |  |  |  | 211,136,000 | [1] | 171,148,000 | [1] |  |  |  |  |  |  |  | 121,027,000 | 99,066,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  |  |  |  |  |  |  |  |  |  |  |  | 6,871,000 | [1] | 5,375,000 | [1] | 4,775,000 |  |  |  |  |  |  | 4,686,000 | 3,584,000 | 3,345,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest cost |  |  |  |  |  |  |  |  |  |  |  |  | 8,942,000 | [1] | 8,825,000 | [1] | 8,378,000 |  |  |  |  |  |  | 5,148,000 | 5,133,000 | 4,845,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan participants' contributions |  |  |  |  |  |  |  |  |  |  |  |  | 49,000 | [1] | 47,000 | [1] |  |  |  |  |  |  |  | 32,000 | 29,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amendments |  |  |  |  |  |  |  |  |  |  |  |  | 0 | [1] | 1,083,000 | [1] |  |  |  |  |  |  |  | 0 | (3,423,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Actuarial (gain) loss |  |  |  |  |  |  |  |  |  |  |  |  | (22,288,000) | [1] | 30,428,000 | [1] |  |  |  |  |  |  |  | (15,645,000) | 18,807,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Benefits paid, net of retiree subsidies received |  |  |  |  |  |  |  |  |  |  |  |  | (5,884,000) | [1] | (5,770,000) | [1] |  |  |  |  |  |  |  | (2,477,000) | (2,169,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Benefit obligation at end of year |  |  |  |  |  |  |  |  |  |  |  |  | 198,826,000 | [1] | 211,136,000 | [1] | 171,148,000 | [1] |  |  |  |  |  | 112,771,000 | 121,027,000 | 99,066,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Change in plan assets [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of year |  |  |  |  |  |  |  |  |  |  |  |  | 166,664,000 | [1] | 124,289,000 | [1] |  |  |  |  |  |  |  | 41,090,000 | 31,428,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Actual return on plan assets |  |  |  |  |  |  |  |  |  |  |  |  | 19,323,000 | [1] | 28,018,000 | [1] |  |  |  |  |  |  |  | 5,120,000 | 6,222,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Employer contributions |  |  |  |  |  |  |  |  |  |  |  |  | 20,083,000 | [1] | 20,080,000 | [1] |  |  |  |  | 20,000,000 | 20,000,000 | 4,900,000 | 5,977,000 | 5,775,000 | 6,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Benefits paid, net of plan participants' contributions |  |  |  |  |  |  |  |  |  |  |  |  | (5,834,000) | [1] | (5,723,000) | [1] |  |  |  |  |  |  |  | (2,632,000) | (2,335,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of plan asset at end of year |  |  |  |  |  |  |  |  |  |  |  |  | 200,236,000 | [1] | 166,664,000 | [1] | 124,289,000 | [1] |  |  |  |  |  | 49,555,000 | 41,090,000 | 31,428,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Funded status |  |  |  |  |  |  |  |  |  |  |  |  | 1,410,000 | [1] | (44,472,000) | [1] |  |  |  |  |  |  |  | (63,216,000) | (79,937,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts recognized on Consolidated Balance Sheets, Postemployment benefit liability |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current |  |  |  |  |  |  |  |  |  |  |  |  | (96,000) | [1] | (93,000) | [1] |  |  |  |  |  |  |  | (100,000) | (120,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-current |  | (67,897,000) | (124,196,000) |  |  |  |  |  |  |  |  |  | 1,506,000 | [1] | (44,379,000) | [1] |  |  |  |  |  |  |  | (63,116,000) | (79,817,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total |  |  |  |  |  |  |  |  |  |  |  |  | 1,410,000 | [1] | (44,472,000) | [1] |  |  |  |  |  |  |  | (63,216,000) | (79,937,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amounts Recognized in Regulatory Assets and Accumulated Other Comprehensive Income [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning, Regulatory Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 80,449,000 | [2] | 72,355,000 |  | 58,799,000 | [2] | 47,925,000 |  |  |  |  |
Beginning, Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25,183,000 | 22,160,000 | 1,511,000 | 3,752,000
Net actuarial loss (gain) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (17,961,000) |  | 10,896,000 |  | (13,523,000) |  | 16,773,000 |  | (8,826,000) | 4,198,000 | (3,589,000) | (1,442,000)
Net actuarial (loss) |  |  |  |  |  |  |  |  |  |  |  |  | (7,646,000) |  | (5,015,000) |  | (3,946,000) |  |  |  |  |  |  | (3,857,000) | (2,894,000) | (2,612,000) |  |  | (5,719,000) |  | (3,848,000) |  | (3,743,000) |  | (2,671,000) |  | (1,927,000) | (1,166,000) | (114,000) | (223,000)
Prior service credit (cost) |  |  |  |  |  |  |  |  |  |  |  |  | 108,000 |  | 46,000 |  | 48,000 |  |  |  |  |  |  | (355,000) | 25,000 | 75,000 |  |  | (105,000) |  | 1,046,000 |  | 301,000 |  | (2,677,000) |  | (3,000) | (9,000) | 54,000 | (420,000)
Net transition obligation |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |  |  | 26,000 | 356,000 | 356,000 |  |  | 0 |  | 0 |  | (22,000) |  | (551,000) |  | 0 | 0 | (4,000) | (156,000)
Net actuarial loss (gain) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 55,559,000 |  | 79,239,000 |  | 44,140,000 |  | 61,406,000 |  | 14,412,000 | 25,165,000 | (1,782,000) | 1,921,000
Prior service cost (credit) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,105,000 |  | 1,210,000 |  | (2,339,000) |  | (2,640,000) |  | 15,000 | 18,000 | (360,000) | (414,000)
Net transition obligation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 11,000 |  | 33,000 |  | 0 | 0 | 0 | 4,000
Ending, Regulatory Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 56,664,000 | [2] | 80,449,000 | [2] | 41,812,000 | [2] | 58,799,000 | [2] |  |  |  |
Ending, Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14,427,000 | 25,183,000 | (2,142,000) | 1,511,000
Amounts included in regulatory assets and accumulated other comprehensive income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial gain, Regulatory Assets |  |  |  |  |  |  |  |  |  |  |  |  | 4,348,000 |  |  |  |  |  |  |  |  |  |  | 2,607,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior service credit, Regulatory Assets |  |  |  |  |  |  |  |  |  |  |  |  | 108,000 |  |  |  |  |  |  |  |  |  |  | 11,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net transition obligation, Regulatory Assets |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  | (303,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total, Regulatory Assets |  |  |  |  |  |  |  |  |  |  |  |  | 4,456,000 |  |  |  |  |  |  |  |  |  |  | 2,315,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial gain, Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |  |  |  |  |  |  |  | 1,248,000 |  |  |  |  |  |  |  |  |  |  | (107,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior service credit, Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |  |  |  |  |  |  |  | 3,000 |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net transition obligation, Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  | (54,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total, Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |  |  |  |  |  |  |  | 1,251,000 |  |  |  |  |  |  |  |  |  |  | (161,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated benefit obligation in excess of the fair value of plan assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Projected benefit obligation |  |  |  |  |  |  |  |  |  |  |  |  | 198,826,000 |  | 211,136,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated benefit obligation |  |  |  |  |  |  |  |  |  |  |  |  | 176,172,000 |  | 186,825,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of plan assets |  |  |  |  |  |  |  |  |  |  |  |  | 200,236,000 |  | 166,664,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Components of net periodic cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  |  |  |  |  |  |  |  |  |  |  |  | 6,871,000 | [1] | 5,375,000 | [1] | 4,775,000 |  |  |  |  |  |  | 4,686,000 | 3,584,000 | 3,345,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest cost |  |  |  |  |  |  |  |  |  |  |  |  | 8,942,000 | [1] | 8,825,000 | [1] | 8,378,000 |  |  |  |  |  |  | 5,148,000 | 5,133,000 | 4,845,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected return on plan assets |  |  |  |  |  |  |  |  |  |  |  |  | (14,825,000) |  | (12,685,000) |  | (11,490,000) |  |  |  |  |  |  | (3,653,000) | (2,746,000) | (2,472,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Recognized actuarial loss |  |  |  |  |  |  |  |  |  |  |  |  | 7,646,000 |  | 5,015,000 |  | 3,946,000 |  |  |  |  |  |  | 3,857,000 | 2,894,000 | 2,612,000 |  |  | 5,719,000 |  | 3,848,000 |  | 3,743,000 |  | 2,671,000 |  | 1,927,000 | 1,166,000 | 114,000 | 223,000
Prior service credit (cost) |  |  |  |  |  |  |  |  |  |  |  |  | 108,000 |  | 46,000 |  | 48,000 |  |  |  |  |  |  | (355,000) | 25,000 | 75,000 |  |  | (105,000) |  | 1,046,000 |  | 301,000 |  | (2,677,000) |  | (3,000) | (9,000) | 54,000 | (420,000)
Recognized net initial obligation |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |  |  | 26,000 | 356,000 | 356,000 |  |  | 0 |  | 0 |  | (22,000) |  | (551,000) |  | 0 | 0 | (4,000) | (156,000)
Net periodic cost |  |  |  |  |  |  |  |  |  |  |  |  | 8,742,000 |  | 6,576,000 |  | 5,657,000 |  |  |  |  |  |  | 9,709,000 | 9,246,000 | 8,761,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average assumptions used to determine benefit costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  |  |  |  |  |  |  | 4.30% |  | 5.25% |  | 5.50% |  |  |  |  |  |  | 4.30% | 5.25% | 5.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected asset return |  |  |  |  |  |  |  |  |  |  |  |  | 8.50% |  | 8.25% |  | 8.25% |  |  |  |  |  |  | 8.50% | 8.25% | 8.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation increase |  |  |  |  |  |  |  |  |  |  |  |  | 3.25% |  | 3.25% |  |  |  | 2.50% | 3.25% |  |  |  | 3.25% | 3.25% | 3.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average assumptions used to determine obligations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  |  |  |  |  |  |  | 5.15% |  | 4.30% |  | 5.25% |  |  |  |  |  |  | 5.15% | 4.30% | 5.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation increase |  |  |  |  |  |  |  |  |  |  |  |  | 3.25% |  | 3.25% |  | 3.25% |  |  |  |  |  |  | 3.25% | 3.25% | 3.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Information relating to the assumed health care cost trend rate (HCCTR) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
HCCTR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.30% | 7.50% | 8.20% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ultimate HCCTR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.80% | 4.80% | 4.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year ultimate HCCTR reached |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2022 | 2022 | 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effect of a 1 percentage point increase in the HCCTR on year-end benefit obligation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18,008,000 | 21,278,000 | 17,193,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effect of a 1 percentage point increase in the HCCTR on total service and interest cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,156,000 | 1,868,000 | 1,751,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effect of a 1 percentage point decrease in the HCCTR on year-end benefit obligation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (14,629,000) | (17,034,000) | (13,792,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effect of a 1 percentage point decrease in the HCCTR on total service and interest costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,675,000) | (1,457,000) | (1,367,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Desired rate of return before permissible expense after inflation |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Target allocations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2014 Target Allocation | 100.00% |  |  | 40.00% |  |  | 20.00% |  |  | 40.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets at September 30 |  | 100.00% | 100.00% |  | 42.00% | 39.00% |  | 22.00% | 21.00% |  | 36.00% | 40.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated future benefit payments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2014 |  |  |  |  |  |  |  |  |  |  |  |  | 6,819,000 |  |  |  |  |  |  |  |  |  |  | 3,135,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2015 |  |  |  |  |  |  |  |  |  |  |  |  | 7,323,000 |  |  |  |  |  |  |  |  |  |  | 3,677,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2016 |  |  |  |  |  |  |  |  |  |  |  |  | 7,900,000 |  |  |  |  |  |  |  |  |  |  | 4,211,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2017 |  |  |  |  |  |  |  |  |  |  |  |  | 8,438,000 |  |  |  |  |  |  |  |  |  |  | 4,729,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2018 |  |  |  |  |  |  |  |  |  |  |  |  | 9,210,000 |  |  |  |  |  |  |  |  |  |  | 5,269,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2019 - 2023 |  |  |  |  |  |  |  |  |  |  |  |  | $ 58,543,000 |  |  |  |  |  |  |  |  |  |  | $ 35,631,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | Includes the Company's PEP.
[2] | Balance represents amounts recognized in accordance with ASC 715 and excludes $308,000 associated with a regulatory asset approved by the BPU for fiscal 2012.

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- Definition The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Expected Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512136 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Glossary Expected Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512171 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=32704760&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2417-114920 + Details
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- Definition If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=32704760&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2417-114920 + Details
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