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REPORTING SEGMENT AND OTHER OPERATIONS DATA - RECONCILIATION OF SEGMENT INCOME TO CONSOLIDATED (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Segment Reporting Information [Line Items] |  |  |  |
Utility | $ 127,626 | $ 128,532 | $ 633,522 | $ 645,375
Nonutility | 239,967 | 170,442 | 990,563 | 908,249
Total operating revenues | 367,593 | 298,974 | 1,624,085 | 1,553,624
Depreciation and amortization | 27,767 | 27,872 | 81,977 | 80,025
Interest income | 347 | 147 | 2,073 | 2,054
Interest expense, net of capitalized interest | 18,744 | 15,144 | 58,683 | 50,417
Income tax provision (benefit) | (18,785) | (6,767) | 37,713 | 25,988
Impairment of equity method investment | (89,233) | 3,213 | (83,754) | 10,191
Net financial earnings (loss) | (14,148) | 2,682 | 201,113 | 121,904
Capital expenditures | 184,026 | 139,890 | 429,913 | 367,239
Investments in equity investees | 208 | 225 | 690 | 1,491
Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total operating revenues | 354,250 | 287,334 | 1,592,068 | 1,520,648
Depreciation and amortization | 27,565 | 27,587 | 81,386 | 79,557
Interest income | 451 | 608 | 2,394 | 3,722
Interest expense, net of capitalized interest | 16,842 | 14,885 | 53,937 | 50,123
Income tax provision (benefit) | (19,757) | (6,708) | 35,201 | 23,771
Net financial earnings (loss) | (13,485) | 3,278 | 203,624 | 121,089
Capital expenditures | 183,782 | 137,928 | 428,858 | 365,262
Operating Segments | Natural Gas Distribution |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Utility | 127,626 | 128,532 | 633,522 | 645,375
Total operating revenues | 127,626 | 128,532 | 633,522 | 645,375
Depreciation and amortization | 19,894 | 18,269 | 58,538 | 53,186
Interest income | 90 | 135 | 248 | 378
Interest expense, net of capitalized interest | 8,667 | 7,455 | 26,647 | 22,760
Income tax provision (benefit) | 889 | 939 | 24,878 | 29,276
Net financial earnings (loss) | 1,581 | 11,968 | 131,589 | 142,160
Capital expenditures | 150,642 | 88,171 | 327,127 | 238,010
Operating Segments | Clean Energy Ventures |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Nonutility | 13,381 | 13,396 | 26,227 | 25,603
Total operating revenues | 13,381 | 13,396 | 26,227 | 25,603
Depreciation and amortization | 5,200 | 6,777 | 15,318 | 19,696
Interest income | 0 | 0 | 240 | 0
Interest expense, net of capitalized interest | 4,998 | 5,070 | 15,298 | 14,397
Income tax provision (benefit) | (1,448) | (384) | (7,248) | (8,352)
Net financial earnings (loss) | (4,926) | (5,686) | (24,072) | (22,694)
Capital expenditures | 10,661 | 41,182 | 51,545 | 110,968
Operating Segments | Energy Services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Nonutility | 202,516 | 133,740 | 889,631 | 816,003
Total operating revenues | 202,516 | 133,740 | 889,631 | 816,003
Depreciation and amortization | 28 | 28 | 83 | 84
Interest income | 11 | 10 | 11 | 99
Interest expense, net of capitalized interest | 240 | 517 | 1,495 | 2,680
Income tax provision (benefit) | (8,805) | (8,909) | 26,445 | (606)
Net financial earnings (loss) | (12,527) | (6,619) | 85,501 | (9,254)
Operating Segments | Storage and Transportation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Nonutility | 10,999 | 11,143 | 36,703 | 29,949
Total operating revenues | 10,999 | 11,143 | 36,703 | 29,949
Depreciation and amortization | 2,443 | 2,513 | 7,447 | 6,591
Interest income | 350 | 463 | 1,895 | 3,245
Interest expense, net of capitalized interest | 2,937 | 1,843 | 10,497 | 10,286
Income tax provision (benefit) | (10,393) | 1,646 | (8,874) | 3,453
Impairment of equity method investment | (88,615) | 3,615 | (82,036) | 11,200
Net financial earnings (loss) | 2,387 | 3,615 | 10,606 | 10,877
Capital expenditures | 22,479 | 8,575 | 50,186 | 16,284
Investments in equity investees | 208 | 225 | 690 | 1,491
Intercompany |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Nonutility | 241 | 206 | 660 | 947
Intercompany | Energy Services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Nonutility | (922) | (197) | 4,009 | 1,656
Intercompany | Storage and Transportation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Nonutility | 650 | 720 | 1,976 | 2,062
Home Services and Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Nonutility | 13,071 | 12,163 | 38,002 | 36,694
Total operating revenues | 13,071 | 12,163 | 38,002 | 36,694
Depreciation and amortization | 260 | 265 | 747 | 761
Interest income | 129 | 157 | 388 | 856
Interest expense, net of capitalized interest | 1,902 | 427 | 4,746 | 1,264
Income tax provision (benefit) | 415 | (131) | 474 | 2,044
Net financial earnings (loss) | (384) | (582) | 301 | 675
Capital expenditures | 244 | 1,962 | 1,055 | 1,977
Eliminations |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Nonutility | 31 | (729) | (6,645) | (4,665)
Depreciation and amortization | (58) | 20 | (156) | (293)
Interest income | (233) | (618) | (709) | (2,524)
Interest expense, net of capitalized interest | 0 | (168) | 0 | (970)
Income tax provision (benefit) | 557 | 72 | 2,038 | 173
Impairment of equity method investment | (618) | (402) | (1,718) | (1,009)
Net financial earnings (loss) | $ (279) | $ (14) | $ (2,812) | $ 140

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