Business Segment Information (Tables)

3 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Financial Segment Information By Segment

Quarter Ended December 31, 2015 (Thousands)
	Exploration and Production	Pipeline and Storage	Gathering	Utility	Energy Marketing	Total Reportable Segments	All Other	Corporate and Intersegment Eliminations	Total Consolidated
Revenue from External Customers	$151,965	$53,354	$125	$143,848	$24,984	$374,276	$706	$213	$375,195
Intersegment Revenues	$—	$22,183	$18,640	$3,664	$311	$44,798	$—	$(44,798)	$—
Segment Profit: Net Income (Loss)	$(237,086)	$21,276	$4,921	$18,606	$1,223	$(191,060)	$189	$1,762	$(189,109)

(Thousands)	Exploration and Production	Pipeline and Storage	Gathering	Utility	Energy Marketing	Total Reportable Segments	All Other	Corporate and Intersegment Eliminations	Total Consolidated
Segment Assets:
At December 31, 2015	$2,103,633	$1,597,432	$467,220	$1,930,977	$87,870	$6,187,132	$78,293	$(75,093)	$6,190,332
At September 30, 2015	$2,439,801	$1,590,525	$444,358	$1,934,730	$90,676	$6,500,090	$77,350	$(12,501)	$6,564,939

Quarter Ended December 31, 2014 (Thousands)
	Exploration and Production	Pipeline and Storage	Gathering	Utility	Energy Marketing	Total Reportable Segments	All Other	Corporate and Intersegment Eliminations	Total Consolidated
Revenue from External Customers	$204,665	$51,745	$146	$210,073	$56,166	$522,795	$884	$230	$523,909
Intersegment Revenues	$—	$21,461	$24,428	$4,534	$206	$50,629	$—	$(50,629)	$—
Segment Profit: Net Income (Loss)	$26,720	$20,778	$11,623	$22,594	$2,826	$84,541	$(6)	$205	$84,740