Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended		6 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Condensed Consolidated Statements of Comprehensive Income (Unaudited)
Operating Revenues	$ 462,247,000	$ 399,411,000	$ 1,119,980,000	$ 915,286,000
Cost of Gas	250,724,000	215,555,000	646,945,000	499,806,000
Margin	211,523,000	183,856,000	473,035,000	415,480,000
Operating Expenses
Operations and maintenance	70,193,000	65,037,000	130,832,000	120,919,000
Depreciation	28,344,000	26,867,000	57,987,000	53,569,000
General taxes	9,497,000	9,068,000	18,606,000	18,596,000
Utility income taxes	36,190,000	31,380,000	95,992,000	84,679,000
Total operating expenses	144,224,000	132,352,000	303,417,000	277,763,000
Operating Income	67,299,000	51,504,000	169,618,000	137,717,000
Other Income (Expense)
Income from equity method investments	14,360,000	12,437,000	24,302,000	19,592,000
Non-operating income	(1,045,000)	742,000	(795,000)	1,190,000
Non-operating expense	(1,443,000)	(696,000)	(2,052,000)	(1,458,000)
Income taxes	(4,604,000)	(4,875,000)	(8,332,000)	(7,549,000)
Total other income (expense)	7,268,000	7,608,000	13,123,000	11,775,000
Utility Interest Charges
Interest on long-term debt	14,902,000	12,652,000	30,495,000	25,327,000
Allowance for borrowed funds used during construction	(5,464,000)	(9,938,000)	(11,416,000)	(18,251,000)
Other	2,589,000	608,000	3,550,000	703,000
Total utility interest charges	12,027,000	3,322,000	22,629,000	7,779,000
Net Income	62,540,000	55,790,000	160,112,000	141,713,000
Other Comprehensive Income (Loss), net of tax
Unrealized gain from hedging activities of equity method investments, net of tax	352,000	238,000	526,000	59,000
Reclassification adjustment of realized gain (loss) from hedging activities of equity method investments included in net income, net of tax	(359,000)	76,000	(222,000)	97,000
Total other comprehensive income (loss)	(7,000)	314,000	304,000	156,000
Comprehensive Income	$ 62,533,000	$ 56,104,000	$ 160,416,000	$ 141,869,000
Average Shares of Common Stock
Basic	77,982,000	75,463,000	77,477,000	73,884,000
Diluted	78,291,000	75,904,000	77,802,000	74,301,000
Earnings Per Share of Common Stock
Basic	$ 0.80	$ 0.74	$ 2.07	$ 1.92
Diluted	$ 0.80	$ 0.74	$ 2.06	$ 1.91