CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016		Mar. 31, 2015
OPERATING REVENUES
Utility	$ 242,536	$ 374,703	$ 394,142		$ 583,430
Nonutility	331,657	638,387	624,309		1,253,784
Total operating revenues	574,193	1,013,090	1,018,451		1,837,214
OPERATING EXPENSES
Gas Purchases - Utility	82,374	129,281	129,039		213,544
Gas Purchases - Nonutility	287,883	662,573	541,971		1,135,544
Gas Purchases - Related parties	2,077	3,124	4,151		6,388
Operation and maintenance	53,125	52,778	99,358		97,537
Regulatory rider expenses	21,215	42,692	30,843		64,155
Depreciation and amortization	17,744	15,204	34,226		29,590
Energy and other taxes	15,842	24,632	25,479		38,953
Total operating expenses	480,260	930,284	865,067		1,585,711
OPERATING INCOME	93,933	82,806	153,384		251,503
Other income, net	2,202	1,137	4,126		1,027
Interest expense, net of capitalized interest	7,369	6,483	14,146		13,678
INCOME BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF AFFILIATES	88,766	77,460	143,364		238,852
Income tax provision	17,840	20,144	26,197		61,011
Equity in earnings of affiliates	2,402	3,587	4,808		6,382
NET INCOME	$ 73,328	$ 60,903	$ 121,975		$ 184,223
EARNINGS PER COMMON SHARE
Basic (usd per share)	$ 0.85	$ 0.71	$ 1.42		$ 2.17
Diluted (usd per share)	0.84	0.71	1.41	[1]	2.14	[1]
DIVIDENDS DECLARED PER COMMON SHARE (usd per share)	$ 0.24	$ 0.23	$ 0.48		$ 0.45
WEIGHTED AVERAGE SHARES OUTSTANDING
Basic (in shares)	85,834	85,328	85,754		84,940
Diluted (in shares)	86,858	86,370	86,778		85,982

[1] There were no anti-dilutive shares excluded from the calculation of diluted earnings per share for the three and six months ended March 31, 2016 and 2015.