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Segment Information (Table)
3 Months Ended
Dec. 31, 2020
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment
Income statements and capital expenditures for the three months ended December 31, 2020 and 2019 by segment are presented in the following tables:
 Three Months Ended December 31, 2020
 DistributionPipeline and StorageEliminationsConsolidated
 (In thousands)
Operating revenues from external parties$875,887 $38,593 $— $914,480 
Intersegment revenues763 121,120 (121,883)— 
Total operating revenues876,650 159,713 (121,883)914,480 
Purchased gas cost
411,072 (1,244)(121,568)288,260 
Operation and maintenance expense108,802 30,156 (315)138,643 
Depreciation and amortization expense82,870 32,415 — 115,285 
Taxes, other than income64,352 9,100 — 73,452 
Operating income209,554 89,286 — 298,840 
Other non-operating income835 5,237 — 6,072 
Interest charges10,712 11,298 — 22,010 
Income before income taxes
199,677 83,225 — 282,902 
Income tax expense45,985 19,239 — 65,224 
Net income$153,692 $63,986 $— $217,678 
Capital expenditures$306,016 $150,793 $— $456,809 

 Three Months Ended December 31, 2019
 DistributionPipeline and StorageEliminationsConsolidated
 (In thousands)
Operating revenues from external parties$827,840 $47,723 $— $875,563 
Intersegment revenues664 100,453 (101,117)— 
Total operating revenues828,504 148,176 (101,117)875,563 
Purchased gas cost
397,558 99 (100,789)296,868 
Operation and maintenance expense114,352 38,221 (328)152,245 
Depreciation and amortization expense76,074 28,988 — 105,062 
Taxes, other than income60,243 8,364 — 68,607 
Operating income180,277 72,504 — 252,781 
Other non-operating income1,954 2,933 — 4,887 
Interest charges16,362 10,867 — 27,229 
Income before income taxes
165,869 64,570 — 230,439 
Income tax expense36,112 15,654 — 51,766 
Net income$129,757 $48,916 $— $178,673 
Capital expenditures$404,247 $124,939 $— $529,186 
Balance sheet information at December 31, 2020 and September 30, 2020 by segment is presented in the following tables:
 December 31, 2020
 DistributionPipeline and StorageEliminationsConsolidated
 (In thousands)
Property, plant and equipment, net$10,235,658 $3,526,485 $— $13,762,143 
Total assets$15,694,179 $3,757,875 $(2,976,175)$16,475,879 
 September 30, 2020
 DistributionPipeline and StorageEliminationsConsolidated
 (In thousands)
Property, plant and equipment, net$9,944,978 $3,410,369 $— $13,355,347 
Total assets$14,578,176 $3,647,907 $(2,867,051)$15,359,032