Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands		Mar. 31, 2017	Sep. 30, 2016
ASSETS
Property, Plant and Equipment		$ 9,704,134	$ 9,539,581
Less - Accumulated Depreciation, Depletion and Amortization		5,185,077	5,085,099
Property, Plant and Equipment, Net, Total		4,519,057	4,454,482
Current Assets
Cash and Temporary Cash Investments		231,173	129,972
Hedging Collateral Deposits	[1]	1,771	1,484
Receivables – Net of Allowance for Uncollectible Accounts of $27,199 and $21,109, Respectively		171,162	133,201
Unbilled Revenue		52,852	18,382
Gas Stored Underground		9,027	34,332
Materials and Supplies - at average cost		34,695	33,866
Unrecovered Purchased Gas Costs		4,681	2,440
Other Current Assets		51,585	59,354
Total Current Assets		556,946	413,031
Other Assets
Recoverable Future Taxes		179,928	177,261
Unamortized Debt Expense		1,424	1,688
Other Regulatory Assets		314,903	320,750
Deferred Charges		26,128	20,978
Other Investments		117,284	110,664
Goodwill		5,476	5,476
Prepaid Post-Retirement Benefit Costs		18,315	17,649
Fair Value of Derivative Financial Instruments		64,729	113,804
Other		485	604
Total Other Assets		728,672	768,874
Total Assets		5,804,675	5,636,387
Capitalization:
Common Stock, $1 Par Value Authorized - 200,000,000 Shares; Issued and Outstanding - 85,375,068 Shares and 85,118,886 Shares, Respectively		85,375	85,119
Paid in Capital		782,688	771,164
Earnings Reinvested in the Business		817,348	676,361
Accumulated Other Comprehensive Loss		(34,091)	(5,640)
Total Comprehensive Shareholders’ Equity		1,651,320	1,527,004
Long-term Debt, Net of Unamortized Discount and Debt Issuance Costs		2,087,385	2,086,252
Total Capitalization		3,738,705	3,613,256
Current and Accrued Liabilities
Notes Payable to Banks and Commercial Paper		0	0
Current Portion of Long-Term Debt		0	0
Accounts Payable		111,382	108,056
Amounts Payable to Customers		19,466	19,537
Dividends Payable		34,577	34,473
Interest Payable on Long-Term Debt		34,900	34,900
Customer Advances		300	14,762
Customer Security Deposits		17,512	16,019
Other Accruals and Current Liabilities		106,287	74,430
Fair Value of Derivative Financial Instruments		1,471	1,560
Total Current and Accrued Liabilities		325,895	303,737
Deferred Credits
Deferred Income Taxes		837,098	823,795
Taxes Refundable to Customers		93,506	93,318
Cost of Removal Regulatory Liability		196,901	193,424
Other Regulatory Liabilities		91,661	99,789
Pension and Other Post-Retirement Liabilities		291,259	277,113
Asset Retirement Obligations		114,014	112,330
Other Deferred Credits		115,636	119,625
Total Deferred Credits		1,740,075	1,719,394
Commitments and Contingencies (Note 6)		0	0
Total Capitalization and Liabilities		$ 5,804,675	$ 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.