Consolidated Balance Sheets - USD ($) $ in Thousands		Sep. 30, 2017	Sep. 30, 2016
ASSETS
Property, Plant and Equipment		$ 9,945,560	$ 9,539,581
Less - Accumulated Depreciation, Depletion and Amortization		5,271,486	5,085,099
Property, Plant and Equipment, Net, Total		4,674,074	4,454,482
Cash and Temporary Cash Investments		555,530	129,972
Current Assets
Hedging Collateral Deposits	[1]	1,741	1,484
Receivables - Net of Allowance for Uncollectible Accounts of $22,526 and $21,109, Respectively		112,383	133,201
Unbilled Revenue		22,883	18,382
Gas Stored Underground		35,689	34,332
Materials and Supplies - at average cost		33,926	33,866
Unrecovered Purchased Gas Costs		4,623	2,440
Other Current Assets		51,505	59,354
Total Current Assets		818,280	413,031
Other Assets
Recoverable Future Taxes		181,363	177,261
Unamortized Debt Expense		1,159	1,688
Other Regulatory Assets		174,433	320,750
Deferred Charges		30,047	20,978
Other Investments		125,265	110,664
Goodwill		5,476	5,476
Prepaid Post-Retirement Benefit Costs		56,370	17,649
Fair Value of Derivative Financial Instruments		36,111	113,804
Other		742	604
Total Other Assets		610,966	768,874
Total Assets		6,103,320	5,636,387
Capitalization:
Common Stock, $1 Par Value Authorized - 200,000,000 Shares; Issued and Outstanding - 85,543,125 Shares and 85,118,886 Shares, Respectively		85,543	85,119
Paid In Capital		796,646	771,164
Earnings Reinvested in the Business		851,669	676,361
Accumulated Other Comprehensive Loss		(30,123)	(5,640)
Total Comprehensive Shareholders' Equity		1,703,735	1,527,004
Long-term Debt, Net of Current Portion and Unamortized Discount and Debt Issuance Costs		2,083,681	2,086,252
Total Capitalization		3,787,416	3,613,256
Current and Accrued Liabilities
Notes Payable to Banks and Commercial Paper		0	0
Current Portion of Long-Term Debt	[2]	300,000	0
Accounts Payable		126,443	108,056
Amounts Payable to Customers		0	19,537
Dividends Payable		35,500	34,473
Interest Payable on Long-Term Debt		35,031	34,900
Customer Advances		15,701	14,762
Customer Security Deposits		20,372	16,019
Other Accruals and Current Liabilities		111,889	74,430
Fair Value of Derivative Financial Instruments		1,103	1,560
Total Current and Accrued Liabilities		646,039	303,737
Deferred Credits
Deferred Income Taxes		891,287	823,795
Taxes Refundable to Customers		95,739	93,318
Cost of Removal Regulatory Liability		204,630	193,424
Other Regulatory Liabilities		113,716	99,789
Pension and Other Post-Retirement Liabilities		149,079	277,113
Asset Retirement Obligations		106,395	112,330
Other Deferred Credits		109,019	119,625
Total Deferred Credits		1,669,865	1,719,394
Commitments and Contingencies (Note I)		0	0
Total Capitalization and Liabilities		$ 6,103,320	$ 5,636,387

[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.

[2] Current Portion of Long-Term Debt at September 30, 2017 consisted of $300.0 million of 6.50% notes scheduled to mature in April 2018. The Company redeemed these notes on October 18, 2017 for $307.0 million, plus accrued interest. The call premium was recorded to Unamortized Debt Expense on the Consolidated Balance Sheet in October 2017.