CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data	12 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2009
OPERATING REVENUES
Utility	$ 971,724		$ 937,433		$ 1,082,001
Nonutility	2,037,485		1,701,871		1,510,459
Total operating revenues	3,009,209		2,639,304		2,592,460
OPERATING EXPENSES
Gas Purchases - Utility	534,363		576,220		707,758
Gas Purchases - Nonutility	2,016,208		1,591,338		1,537,411
Operation and maintenance	163,111		148,565		149,151
Regulatory rider expenses	51,246		45,966		44,992
Depreciation and amortization	34,370		32,267		30,328
Energy and other taxes	66,910		56,823		74,750
Total operating expenses	2,866,208		2,451,179		2,544,390
OPERATING INCOME	143,001		188,125		48,070
Other income	3,747		5,258		4,409
Interest expense, net of capitalized interest	19,623		21,251		21,014
INCOME BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF AFFILIATES	127,125		172,132		31,465
Income tax provision (benefit)	37,665		64,692		11,376
Equity in earnings of affiliates	11,839		10,017		7,153
NET INCOME	$ 101,299		$ 117,457		$ 27,242
EARNINGS PER COMMON SHARE
BASIC	$ 2.45		$ 2.84		$ 0.65
DILUTED	$ 2.44	[1]	$ 2.82	[1]	$ 0.64	[1]
DIVIDENDS PER COMMON SHARE	$ 1.44		$ 1.36		$ 1.24
WEIGHTED AVERAGE SHARES OUTSTANDING
BASIC	41,359		41,364		42,119
DILUTED	41,568		41,630		42,465

[1] There were no anti-dilutive shares excluded from the calculation of diluted earnings per share for fiscal 2011, 2010 and 2009.