Summary Of Significant Accounting Policies (Tables)

6 Months Ended

Mar. 31, 2013

Summary Of Significant Accounting Policies [Abstract]

Schedule Of Non-Cash Capital Expenditures

	At March 31,				At September 30,
	2013		2012		2012		2011
		(Thousands)
Non-cash Capital Expenditures	$	77,093	$	149,550	$	67,503	$	125,115

Components Of Accumulated Other Comprehensive Income (Loss)

	At March 31, 2013		At September 30, 2012
Funded Status of the Pension and Other Post-Retirement
Benefit Plans	$	(100,561)	$	(100,561)
Net Unrealized Gain (Loss) on Derivative Financial Instruments		(21,341)		(1,602)
Net Unrealized Gain on Securities Available for Sale		4,879		3,143
Accumulated Other Comprehensive Loss	$	(117,023)	$	(99,020)

Schedule Of Other Current Assets

	At March 31, 2013		At September 30, 2012
Prepayments	$	3,568	$	8,316
Prepaid Property and Other Taxes		20,858		14,455
Federal Income Taxes Receivable		749		268
State Income Taxes Receivable		885		2,065
Fair Values of Firm Commitments		-		1,291
Regulatory Assets		25,671		29,726
	$	51,731	$	56,121

Schedule Of Other Accruals And Current Liabilities

	At March 31, 2013		At September 30, 2012
Accrued Capital Expenditures	$	59,395	$	36,460
Regulatory Liabilities		11,802		18,289
Reserve for Gas Replacement		46,963		-
Other		21,896		24,350
	$	140,056	$	79,099