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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, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Segment Reporting Information [Line Items] |  |  |  |
Utility | $ 199,357 | $ 127,626 | $ 937,266 | $ 633,522
Nonutility | 352,978 | 239,967 | 1,203,227 | 990,563
Operating revenues | 552,335 | 367,593 | 2,140,493 | 1,624,085
Depreciation and amortization | 32,872 | 27,767 | 94,700 | 81,977
Interest income | 684 | 347 | 1,673 | 2,073
Interest expense, net of capitalized interest | 21,411 | 18,744 | 59,814 | 58,683
Income tax provision (benefit) | 4,434 | (18,785) | 64,051 | 37,713
Equity in earnings (loss) of affiliates | 4,801 | (89,233) | 6,145 | (83,754)
Net financial earnings (loss) | (3,551) | (14,148) | 192,425 | 201,113
Capital expenditures | 139,804 | 184,026 | 441,114 | 429,913
Investments in (return of capital from) equity investees | (1,479) |  | (5,479) |
Investments in (return of capital from) equity investees |  | 208 |  | 690
Energy Services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 10,300 |  | 42,700 |
Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 537,695 | 354,250 | 2,105,663 | 1,592,068
Depreciation and amortization | 32,666 | 27,565 | 94,211 | 81,386
Interest income | 751 | 451 | 1,893 | 2,394
Interest expense, net of capitalized interest | 21,276 | 16,842 | 59,310 | 53,937
Income tax provision (benefit) | 3,995 | (19,757) | 63,662 | 35,201
Net financial earnings (loss) | (3,927) | (13,485) | 191,718 | 203,624
Capital expenditures | 139,484 | 183,782 | 440,552 | 428,858
Operating Segments | Natural Gas Distribution, External Customers |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Utility | 199,357 | 127,626 | 937,266 | 633,522
Operating Segments | Clean Energy Ventures, External Customers |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Nonutility | 13,795 | 13,381 | 35,805 | 26,227
Operating Segments | Energy Services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Nonutility | 309,236 | 202,516 | 1,086,093 | 889,631
Operating revenues | 309,236 | 202,516 | 1,086,093 | 889,631
Depreciation and amortization | 34 | 28 | 94 | 83
Interest income | 0 | 11 | 0 | 11
Interest expense, net of capitalized interest | 1,115 | 240 | 2,585 | 1,495
Income tax provision (benefit) | 2,338 | (8,805) | 22,053 | 26,445
Net financial earnings (loss) | (5,003) | (12,527) | 42,504 | 85,501
Operating Segments | Storage and Transportation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Nonutility | 15,779 | 10,999 | 40,168 | 36,703
Operating revenues | 15,779 | 10,999 | 40,168 | 36,703
Depreciation and amortization | 3,323 | 2,443 | 8,027 | 7,447
Interest income | 501 | 350 | 1,259 | 1,895
Interest expense, net of capitalized interest | 3,177 | 2,937 | 7,160 | 10,497
Income tax provision (benefit) | 1,675 | (10,393) | 2,732 | (8,874)
Equity in earnings (loss) of affiliates | 5,274 | (88,615) | 7,586 | (82,036)
Net financial earnings (loss) | 3,526 | 2,387 | 11,113 | 10,606
Capital expenditures | 20,560 | 22,479 | 129,608 | 50,186
Investments in (return of capital from) equity investees | (1,479) |  | (5,479) |
Investments in (return of capital from) equity investees |  | 208 |  | 690
Operating Segments | Natural Gas Distribution |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 199,357 | 127,626 | 937,266 | 633,522
Depreciation and amortization | 23,951 | 19,894 | 70,188 | 58,538
Interest income | 250 | 90 | 634 | 248
Interest expense, net of capitalized interest | 11,474 | 8,667 | 33,233 | 26,647
Income tax provision (benefit) | 1,508 | 889 | 44,401 | 24,878
Net financial earnings (loss) | 2,648 | 1,581 | 156,511 | 131,589
Capital expenditures | 79,976 | 150,642 | 205,440 | 327,127
Operating Segments | Clean Energy Ventures |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 13,795 | 13,381 | 35,805 | 26,227
Depreciation and amortization | 5,358 | 5,200 | 15,902 | 15,318
Interest income | 0 | 0 | 0 | 240
Interest expense, net of capitalized interest | 5,510 | 4,998 | 16,332 | 15,298
Income tax provision (benefit) | (1,526) | (1,448) | (5,524) | (7,248)
Net financial earnings (loss) | (5,098) | (4,926) | (18,410) | (24,072)
Capital expenditures | 38,948 | 10,661 | 105,504 | 51,545
Intercompany |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Nonutility | 52 | 241 | 232 | 660
Intercompany | Natural Gas Distribution, External Customers |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Utility | 338 | 0 | 1,013 | 0
Intercompany | Energy Services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Nonutility | (1,421) | (922) | 3,611 | 4,009
Intercompany | Storage and Transportation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Nonutility | 611 | 650 | 1,707 | 1,976
Home Services and Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Nonutility | 14,168 | 13,071 | 41,161 | 38,002
Operating revenues | 14,168 | 13,071 | 41,161 | 38,002
Depreciation and amortization | 207 | 260 | 614 | 747
Interest income | 225 | 129 | 527 | 388
Interest expense, net of capitalized interest | 135 | 1,902 | 504 | 4,746
Income tax provision (benefit) | 180 | 415 | 682 | 474
Net financial earnings (loss) | 215 | (384) | 1,113 | 301
Capital expenditures | 320 | 244 | 562 | 1,055
Eliminations |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Nonutility | 420 | 31 | (6,563) | (6,645)
Depreciation and amortization | (1) | (58) | (125) | (156)
Interest income | (292) | (233) | (747) | (709)
Income tax provision (benefit) | 259 | 557 | (293) | 2,038
Equity in earnings (loss) of affiliates | (473) | (618) | (1,441) | (1,718)
Net financial earnings (loss) | $ 161 | $ (279) | $ (406) | $ (2,812)

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