Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013		Sep. 30, 2012
ASSETS
Property, Plant and Equipment	$ 7,102,369		$ 6,615,813
Less - Accumulated Depreciation, Depletion and Amortization	2,088,337		1,876,010
Property, Plant and Equipment, Net, Total	5,014,032		4,739,803
Current Assets
Cash and Temporary Cash Investments	134,582		74,494
Hedging Collateral Deposits	694	[1]	364	[1]
Receivables - Net of Allowance for Uncollectible Accounts of $34,887 and $30,317, Respectively	165,047		115,818
Unbilled Utility Revenue	13,643		19,652
Gas Stored Underground	22,180		49,795
Materials and Supplies - at average cost	31,641		28,577
Other Current Assets	46,205		56,121
Deferred Income Taxes	15,148		10,755
Total Current Assets	429,140		355,576
Other Assets
Recoverable Future Taxes	152,122		150,941
Unamortized Debt Expense	17,227		13,409
Other Regulatory Assets	556,449		546,851
Deferred Charges	8,051		7,591
Other Investments	93,749		86,774
Goodwill	5,476		5,476
Fair Value of Derivative Financial Instruments	65,170		27,616
Other	2,524		1,105
Total Other Assets	900,768		839,763
Total Assets	6,343,940		5,935,142
Capitalization:
Common Stock, $1 Par Value Authorized - 200,000,000 Shares; Issued and Outstanding - 83,587,858 Shares and 83,330,140 Shares, Respectively	83,588		83,330
Paid in Capital	686,038		669,501
Earnings Reinvested in the Business	1,426,148		1,306,284
Accumulated Other Comprehensive Loss	(58,609)		(99,020)
Total Comprehensive Shareholders' Equity	2,137,165		1,960,095
Long-Term Debt, Net of Current Portion	1,649,000		1,149,000
Total Capitalization	3,786,165		3,109,095
Current and Accrued Liabilities
Notes Payable to Banks and Commercial Paper	0		171,000
Current Portion of Long-Term Debt	0		250,000
Accounts Payable	77,466		87,985
Amounts Payable to Customers	12,386		19,964
Dividends Payable	31,346		30,416
Interest Payable on Long-Term Debt	18,976		29,491
Customer Advances	246		24,055
Customer Security Deposits	16,830		17,942
Other Accruals and Current Liabilities	109,933		79,099
Fair Value of Derivative Financial Instruments	2,217		24,527
Total Current and Accrued Liabilities	269,400		734,479
Deferred Credits
Deferred Income Taxes	1,237,727		1,065,757
Taxes Refundable to Customers	65,069		66,392
Unamortized Investment Tax Credit	1,685		2,005
Cost of Removal Regulatory Liability	151,846		139,611
Other Regulatory Liabilities	33,247		21,014
Pension and Other Post-Retirement Liabilities	511,516		516,197
Asset Retirement Obligations	126,879		119,246
Other Deferred Credits	160,406		161,346
Total Deferred Credits	2,288,375		2,091,568
Commitments and Contingencies	0		0
Total Capitalization and Liabilities	$ 6,343,940		$ 5,935,142

[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. In the tables above, presenting asset and liability information by gas and oil positions may result in negative assets or negative liabilities in Total column when a counterparty has issued both gas and oil swaps to the Company.