Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Sep. 30, 2014
ASSETS
Property, Plant and Equipment	$ 8,691,487		$ 8,245,791
Less - Accumulated Depreciation, Depletion and Amortization	2,794,981		2,502,700
Property, Plant and Equipment, Net, Total	5,896,506		5,743,091
Current Assets
Cash and Temporary Cash Investments	69,441		36,886
Hedging Collateral Deposits	15,726	[1]	2,734	[1]
Receivables – Net of Allowance for Uncollectible Accounts of $40,922 and $31,811, Respectively	207,673		149,735
Unbilled Revenue	56,148		25,663
Gas Stored Underground	7,361		39,422
Materials and Supplies - at average cost	31,658		27,817
Other Current Assets	59,592		54,752
Deferred Income Taxes	39,260		40,323
Total Current Assets	486,859		377,332
Other Assets
Recoverable Future Taxes	163,976		163,485
Unamortized Debt Expense	13,129		14,304
Other Regulatory Assets	217,369		224,436
Deferred Charges	10,923		14,212
Other Investments	88,246		86,788
Goodwill	5,476		5,476
Prepaid Post-Retirement Benefit Costs	43,400		36,512
Fair Value of Derivative Financial Instruments	301,884		72,606
Other	178		1,355
Total Other Assets	844,581		619,174
Total Assets	7,227,946		6,739,597
Capitalization:
Common Stock, $1 Par Value Authorized - 200,000,000 Shares; Issued and Outstanding - 84,385,366 Shares and 84,157,220 Shares, Respectively	84,385		84,157
Paid in Capital	737,335		716,144
Earnings Reinvested in the Business	1,650,840		1,614,361
Accumulated Other Comprehensive Income (Loss)	126,689		(3,979)
Total Comprehensive Shareholders’ Equity	2,599,249		2,410,683
Long-Term Debt, Net of Current Portion	1,649,000		1,649,000
Total Capitalization	4,248,249		4,059,683
Current and Accrued Liabilities
Notes Payable to Banks and Commercial Paper	157,500		85,600
Current Portion of Long-Term Debt	0		0
Accounts Payable	168,290		136,674
Amounts Payable to Customers	44,796		33,745
Dividends Payable	32,488		32,400
Interest Payable on Long-Term Debt	29,960		29,960
Customer Advances	270		19,005
Customer Security Deposits	18,463		15,761
Other Accruals and Current Liabilities	179,233		136,672
Fair Value of Derivative Financial Instruments	13,175		759
Total Current and Accrued Liabilities	644,175		490,576
Deferred Credits
Deferred Income Taxes	1,563,368		1,456,283
Taxes Refundable to Customers	90,214		91,736
Unamortized Investment Tax Credit	937		1,145
Cost of Removal Regulatory Liability	178,096		173,199
Other Regulatory Liabilities	119,631		81,152
Pension and Other Post-Retirement Liabilities	137,204		134,202
Asset Retirement Obligations	119,164		117,713
Other Deferred Credits	126,908		133,908
Total Deferred Credits	2,335,522		2,189,338
Commitments and Contingencies	0		0
Total Capitalization and Liabilities	$ 7,227,946		$ 6,739,597

[1] Netting Adjustments represent the impact of legally-enforceable master netting arrangements that allow the Company to net gain and loss positions held with the same counterparties. The net asset or net liability for each counterparty is recorded as an asset or liability on the Company’s balance sheet.