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REPORTING SEGMENT AND OTHER OPERATIONS DATA - RECONCILIATION OF SEGMENT INCOME TO CONSOLIDATED (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2019 | Mar. 31, 2018
Segment Reporting Information [Line Items] |  |  |  |  |
Utility |  | $ 301,420 | $ 317,064 | $ 501,385 | $ 526,851
Nonutility |  | 564,835 | 701,979 | 1,176,637 | 1,197,497
Total operating revenues |  | 866,255 | 1,019,043 | 1,678,022 | 1,724,348
Depreciation and amortization |  | 22,311 | 22,460 | 44,143 | 44,314
Interest income | [1] | 419 | 194 | 618 | 250
Interest expense, net of capitalized interest |  | 12,509 | 11,798 | 25,995 | 23,703
Income tax provision (benefit) |  | (2,952) | 30,901 | (9,913) | (19,267)
Equity in earnings of affiliates |  | 3,371 | 3,193 | 6,532 | 6,457
Net financial earnings | [2] | 112,417 | 142,062 | 166,510 | 277,395
Capital expenditures |  | 103,101 | 97,848 | 197,402 | 164,938
Investments in equity investees |  | 1,457 | 3,975 | 1,457 | 11,177
Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues |  | 860,605 | 1,055,243 | 1,662,734 | 1,757,007
Depreciation and amortization |  | 22,090 | 22,298 | 43,937 | 44,031
Interest income | [1] | 1,140 | 1,008 | 2,395 | 1,791
Interest expense, net of capitalized interest |  | 12,608 | 12,455 | 26,569 | 24,765
Income tax provision (benefit) |  | (1,945) | 32,365 | (8,713) | (29,019)
Net financial earnings |  | 114,078 | 144,640 | 168,017 | 287,784
Capital expenditures |  | 98,046 | 96,002 | 191,616 | 161,779
Operating Segments | Natural Gas Distribution |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Utility |  | 301,420 | 317,064 | 501,385 | 526,851
Depreciation and amortization |  | 13,972 | 13,353 | 27,868 | 26,136
Interest income | [1] | 181 | 131 | 380 | 250
Interest expense, net of capitalized interest |  | 5,762 | 6,523 | 11,865 | 13,059
Income tax provision (benefit) |  | 12,266 | 17,991 | 18,096 | 29,695
Net financial earnings |  | 68,546 | 60,442 | 100,259 | 94,551
Capital expenditures |  | 79,341 | 55,397 | 139,096 | 102,787
Operating Segments | Clean Energy Ventures |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Nonutility |  | 11,360 | 12,866 | 26,257 | 26,862
Depreciation and amortization |  | 8,091 | 8,928 | 16,014 | 17,863
Interest expense, net of capitalized interest |  | 4,657 | 4,344 | 10,085 | 8,552
Income tax provision (benefit) |  | (14,042) | (12,722) | (37,246) | (86,710)
Net financial earnings |  | 21,730 | 10,051 | 31,935 | 81,301
Capital expenditures |  | 20,394 | 40,605 | 52,520 | 58,992
Operating Segments | Energy Services |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Nonutility | [3] | 541,794 | 681,475 | 1,126,754 | 1,153,646
Depreciation and amortization | [4] | 25 | 15 | 52 | 29
Interest income | [1] | 14 | 106 | 14 | 106
Interest expense, net of capitalized interest |  | 1,624 | 1,203 | 3,511 | 2,460
Income tax provision (benefit) |  | (1,388) | 23,965 | 8,256 | 37,708
Net financial earnings |  | 19,304 | 72,832 | 27,674 | 93,106
Operating Segments | Midstream |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Depreciation and amortization |  | 2 | 2 | 3 | 3
Interest income | [1] | 945 | 771 | 2,001 | 1,435
Interest expense, net of capitalized interest |  | 565 | 385 | 1,108 | 694
Income tax provision (benefit) |  | 1,219 | 3,131 | 2,181 | (9,712)
Equity in earnings of affiliates |  | 3,998 | 4,068 | 7,799 | 8,197
Net financial earnings |  | 4,498 | 1,315 | 8,149 | 18,826
Capital expenditures |  | (1,689) | 0 | 0 | 0
Investments in equity investees |  | 1,457 | 3,975 | 1,457 | 11,177
Intercompany |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Nonutility |  | 652 | 623 | 1,197 | 1,229
Intercompany | Energy Services |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Nonutility |  | 6,031 | 43,838 | 8,338 | 49,648
Home Services and Other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Nonutility |  | 11,681 | 7,638 | 23,626 | 16,989
Depreciation and amortization |  | 222 | 189 | 443 | 377
Interest income | [1] | 669 | 354 | 1,105 | 558
Interest expense, net of capitalized interest |  | 611 | 21 | 1,003 | 111
Income tax provision (benefit) |  | (659) | (1,281) | (851) | 10,417
Net financial earnings |  | (1,581) | (2,488) | (1,505) | (10,204)
Capital expenditures |  | 5,055 | 1,846 | 5,786 | 3,159
Eliminations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Nonutility |  | (6,683) | (44,461) | (9,535) | (50,877)
Depreciation and amortization |  | (1) | (27) | (237) | (94)
Interest income | [1] | (1,390) | (1,168) | (2,882) | (2,099)
Interest expense, net of capitalized interest |  | (710) | (678) | (1,577) | (1,173)
Income tax provision (benefit) |  | (348) | (183) | (349) | (665)
Equity in earnings of affiliates |  | (627) | (875) | (1,267) | (1,740)
Net financial earnings |  | $ (80) | $ (90) | $ (2) | $ (185)
[1] | Included in other income, net on the Unaudited Condensed Consolidated Statements of Operations.
[2] | Includes income tax benefit related to the Tax Act of $967,000 and $58.5 million, for the three and six months ended March 31, 2018, respectively.
[3] | Includes sales to Canada, which are immaterial
[4] | The amortization of acquired wholesale energy contracts is excluded above and is included in gas purchases - nonutility on the Unaudited Condensed Consolidated Statements of Operations.

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