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Segment Information (Table) | 6 Months Ended
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Mar. 31, 2018
Segment Reporting [Abstract] |
Schedule of Segment Reporting Information, by Segment | Income statements and capital expenditures for the three and six months ended March 31, 2018 and 2017 by segment are presented in the following tables:
| Three Months Ended March 31, 2018
| Distribution |  | Pipeline and Storage |  | Eliminations |  | Consolidated
| (In thousands)
Operating revenues from external parties | $ | 1,198,309 |  |  | $ | 21,100 |  |  | $ | — |  |  | $ | 1,219,409 |
Intersegment revenues | 982 |  |  | 99,855 |  |  | (100,837 | ) |  | — |
Total operating revenues | 1,199,291 |  |  | 120,955 |  |  | (100,837 | ) |  | 1,219,409 |
Purchased gas cost | 727,053 |  |  | 433 |  |  | (100,526 | ) |  | 626,960 |
Operation and maintenance expense | 131,991 |  |  | 29,393 |  |  | (311 | ) |  | 161,073 |
Depreciation and amortization expense | 65,649 |  |  | 23,732 |  |  | — |  |  | 89,381 |
Taxes, other than income | 64,692 |  |  | 8,315 |  |  | — |  |  | 73,007 |
Operating income | 209,906 |  |  | 59,082 |  |  | — |  |  | 268,988 |
Miscellaneous income (expense) | 393 |  |  | (646 | ) |  | — |  |  | (253 | )
Interest charges | 16,898 |  |  | 10,406 |  |  | — |  |  | 27,304 |
Income before income taxes | 193,401 |  |  | 48,030 |  |  | — |  |  | 241,431 |
Income tax expense | 48,158 |  |  | 14,281 |  |  | — |  |  | 62,439 |
Net income | $ | 145,243 |  |  | $ | 33,749 |  |  | $ | — |  |  | $ | 178,992 |
Capital expenditures | $ | 224,235 |  |  | $ | 86,505 |  |  | $ | — |  |  | $ | 310,740 |
| Three Months Ended March 31, 2017
| Distribution |  | Pipeline and Storage |  | Natural Gas Marketing |  | Eliminations |  | Consolidated
| (In thousands)
Operating revenues from external parties | $ | 962,217 |  |  | $ | 25,969 |  |  | $ | — |  |  | $ | — |  |  | $ | 988,186 |
Intersegment revenues | 324 |  |  | 86,003 |  |  | — |  |  | (86,327 | ) |  | — |
Total operating revenues | 962,541 |  |  | 111,972 |  |  | — |  |  | (86,327 | ) |  | 988,186 |
Purchased gas cost | 513,096 |  |  | 725 |  |  | — |  |  | (86,327 | ) |  | 427,494 |
Operation and maintenance expense | 103,703 |  |  | 28,536 |  |  | — |  |  | — |  |  | 132,239 |
Depreciation and amortization expense | 61,302 |  |  | 16,365 |  |  | — |  |  | — |  |  | 77,667 |
Taxes, other than income | 57,636 |  |  | 7,978 |  |  | — |  |  | — |  |  | 65,614 |
Operating income | 226,804 |  |  | 58,368 |  |  | — |  |  | — |  |  | 285,172 |
Miscellaneous income (expense) | 1,029 |  |  | (196 | ) |  | — |  |  | — |  |  | 833 |
Interest charges | 16,925 |  |  | 10,019 |  |  | — |  |  | — |  |  | 26,944 |
Income from continuing operations before income taxes | 210,908 |  |  | 48,153 |  |  | — |  |  | — |  |  | 259,061 |
Income tax expense | 79,763 |  |  | 17,286 |  |  | — |  |  | — |  |  | 97,049 |
Income from continuing operations | 131,145 |  |  | 30,867 |  |  | — |  |  | — |  |  | 162,012 |
Gain on sale of discontinued operations, net of tax | — |  |  | — |  |  | 2,716 |  |  | — |  |  | 2,716 |
Net income | $ | 131,145 |  |  | $ | 30,867 |  |  | $ | 2,716 |  |  | $ | — |  |  | $ | 164,728 |
Capital expenditures | $ | 208,185 |  |  | $ | 53,238 |  |  | $ | — |  |  | $ | — |  |  | $ | 261,423 |
| Six Months Ended March 31, 2018
| Distribution |  | Pipeline and Storage |  | Eliminations |  | Consolidated
| (In thousands)
Operating revenues from external parties | $ | 2,058,762 |  |  | $ | 49,839 |  |  | $ | — |  |  | $ | 2,108,601 |
Intersegment revenues | 1,321 |  |  | 197,579 |  |  | (198,900 | ) |  | — |
Total operating revenues | 2,060,083 |  |  | 247,418 |  |  | (198,900 | ) |  | 2,108,601 |
Purchased gas cost | 1,190,811 |  |  | 1,345 |  |  | (198,279 | ) |  | 993,877 |
Operation and maintenance expense | 235,728 |  |  | 55,533 |  |  | (621 | ) |  | 290,640 |
Depreciation and amortization expense | 131,083 |  |  | 46,672 |  |  | — |  |  | 177,755 |
Taxes, other than income | 119,799 |  |  | 15,981 |  |  | — |  |  | 135,780 |
Operating income | 382,662 |  |  | 127,887 |  |  | — |  |  | 510,549 |
Miscellaneous expense | (1,007 | ) |  | (1,281 | ) |  | — |  |  | (2,288 | )
Interest charges | 38,266 |  |  | 20,547 |  |  | — |  |  | 58,813 |
Income before income taxes | 343,389 |  |  | 106,059 |  |  | — |  |  | 449,448 |
Income tax (benefit) expense | (50,953 | ) |  | 7,277 |  |  | — |  |  | (43,676 | )
Net income | $ | 394,342 |  |  | $ | 98,782 |  |  | $ | — |  |  | $ | 493,124 |
Capital expenditures | $ | 465,484 |  |  | $ | 228,494 |  |  | $ | — |  |  | $ | 693,978 |
| Six Months Ended March 31, 2017
| Distribution |  | Pipeline and Storage |  | Natural Gas Marketing |  | Eliminations |  | Consolidated
| (In thousands)
Operating revenues from external parties | $ | 1,716,483 |  |  | $ | 51,871 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,768,354 |
Intersegment revenues | 714 |  |  | 170,053 |  |  | — |  |  | (170,767 | ) |  | — |
Total operating revenues | 1,717,197 |  |  | 221,924 |  |  | — |  |  | (170,767 | ) |  | 1,768,354 |
Purchased gas cost | 908,442 |  |  | 1,080 |  |  | — |  |  | (170,723 | ) |  | 738,799 |
Operation and maintenance expense | 196,417 |  |  | 60,804 |  |  | — |  |  | (44 | ) |  | 257,177 |
Depreciation and amortization expense | 122,459 |  |  | 32,166 |  |  | — |  |  | — |  |  | 154,625 |
Taxes, other than income | 108,182 |  |  | 14,481 |  |  | — |  |  | — |  |  | 122,663 |
Operating income | 381,697 |  |  | 113,393 |  |  | — |  |  | — |  |  | 495,090 |
Miscellaneous income (expense) | 396 |  |  | (557 | ) |  | — |  |  | — |  |  | (161 | )
Interest charges | 38,043 |  |  | 19,931 |  |  | — |  |  | — |  |  | 57,974 |
Income from continuing operations before income taxes | 344,050 |  |  | 92,905 |  |  | — |  |  | — |  |  | 436,955 |
Income tax expense | 127,541 |  |  | 33,364 |  |  | — |  |  | — |  |  | 160,905 |
Income from continuing operations | 216,509 |  |  | 59,541 |  |  | — |  |  | — |  |  | 276,050 |
Income from discontinued operations, net of tax | — |  |  | — |  |  | 10,994 |  |  | — |  |  | 10,994 |
Gain on sale of discontinued operations, net of tax | — |  |  | — |  |  | 2,716 |  |  | — |  |  | 2,716 |
Net income | $ | 216,509 |  |  | $ | 59,541 |  |  | $ | 13,710 |  |  | $ | — |  |  | $ | 289,760 |
Capital expenditures | $ | 430,669 |  |  | $ | 128,716 |  |  | $ | — |  |  | $ | — |  |  | $ | 559,385 |
Balance sheet information at March 31, 2018 and September 30, 2017 by segment is presented in the following tables:
| March 31, 2018
| Distribution |  | Pipeline and Storage |  | Eliminations |  | Consolidated
| (In thousands)
Property, plant and equipment, net | $ | 7,202,673 |  |  | $ | 2,558,656 |  |  | $ | — |  |  | $ | 9,761,329 |
Total assets | $ | 10,723,398 |  |  | $ | 2,779,330 |  |  | $ | (2,146,406 | ) |  | $ | 11,356,322 |
| September 30, 2017
| Distribution |  | Pipeline and Storage |  | Eliminations |  | Consolidated
| (In thousands)
Property, plant and equipment, net | $ | 6,849,517 |  |  | $ | 2,409,665 |  |  | $ | — |  |  | $ | 9,259,182 |
Total assets | $ | 10,050,164 |  |  | $ | 2,621,601 |  |  | $ | (1,922,169 | ) |  | $ | 10,749,596 |

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
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