Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands		Dec. 31, 2017	Sep. 30, 2017
ASSETS
Property, Plant and Equipment		$ 10,023,252	$ 9,945,560
Less - Accumulated Depreciation, Depletion and Amortization		5,294,211	5,271,486
Property, Plant and Equipment, Net, Total		4,729,041	4,674,074
Current Assets
Cash and Temporary Cash Investments		166,289	555,530
Hedging Collateral Deposits	[1]	4,465	1,741
Receivables – Net of Allowance for Uncollectible Accounts of $24,511 and $22,526, Respectively		161,029	112,383
Unbilled Revenue		74,790	22,883
Gas Stored Underground		24,139	35,689
Materials and Supplies - at average cost		35,139	33,926
Unrecovered Purchased Gas Costs		7,787	4,623
Other Current Assets		47,914	51,505
Total Current Assets		521,552	818,280
Other Assets
Recoverable Future Taxes		116,792	181,363
Unamortized Debt Expense		8,148	1,159
Other Regulatory Assets		174,577	174,433
Deferred Charges		34,063	30,047
Other Investments		123,368	125,265
Goodwill		5,476	5,476
Prepaid Post-Retirement Benefit Costs		57,054	56,370
Fair Value of Derivative Financial Instruments		21,107	36,111
Other		754	742
Total Other Assets		541,339	610,966
Total Assets		5,791,932	6,103,320
Capitalization:
Common Stock, $1 Par Value Authorized - 200,000,000 Shares; Issued and Outstanding - 85,760,846 Shares and 85,543,125 Shares, Respectively		85,761	85,543
Paid in Capital		800,348	796,646
Earnings Reinvested in the Business		1,014,733	851,669
Accumulated Other Comprehensive Loss		(40,919)	(30,123)
Total Comprehensive Shareholders’ Equity		1,859,923	1,703,735
Long-Term Debt, Net of Current Portion and Unamortized Discount and Debt Issuance Costs		2,084,465	2,083,681
Total Capitalization		3,944,388	3,787,416
Current and Accrued Liabilities
Notes Payable to Banks and Commercial Paper		0	0
Current Portion of Long-Term Debt		0	300,000
Accounts Payable		132,409	126,443
Amounts Payable to Customers		251	0
Dividends Payable		35,590	35,500
Interest Payable on Long-Term Debt		27,962	35,031
Customer Advances		18,398	15,701
Customer Security Deposits		22,503	20,372
Other Accruals and Current Liabilities		121,596	111,889
Fair Value of Derivative Financial Instruments		6,579	1,103
Total Current and Accrued Liabilities		365,288	646,039
Deferred Credits
Deferred Income Taxes		453,285	891,287
Taxes Refundable to Customers		366,768	95,739
Cost of Removal Regulatory Liability		205,554	204,630
Other Regulatory Liabilities		118,551	113,716
Pension and Other Post-Retirement Liabilities		125,055	149,079
Asset Retirement Obligations		106,516	106,395
Other Deferred Credits		106,527	109,019
Total Deferred Credits		1,482,256	1,669,865
Commitments and Contingencies (Note 6)		0	0
Total Capitalization and Liabilities		$ 5,791,932	$ 6,103,320

[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.