Financial Instruments (Tables)

9 Months Ended

Jun. 30, 2012

Financial Instruments [Abstract]

Long-Term Debt

	June 30, 2012		September 30, 2011
	Carrying Amount	Fair Value	Carrying Amount	Fair Value
Long-Term Debt	$1,399,000	$1,595,554	$1,049,000	$1,198,585

Schedule Of Derivative Financial Instruments Designated And Qualifying As Cash Flow Hedges On The Statement Of Financial Performance

The Effect of Derivative Financial Instruments on the Statement of Financial Performance for the Three Months Ended June 30, 2012 and 2011 (Thousands of Dollars)
Derivatives in Cash Flow Hedging Relationships	Amount of Derivative Gain or (Loss) Recognized in Other Comprehensive Income (Loss) on the Consolidated Statement of Comprehensive Income (Loss) (Effective Portion) for the Three Months Ended June 30,		Location of Derivative Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) on the Consolidated Balance Sheet into the Consolidated Statement of Income (Effective Portion)	Amount of Derivative Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) on the Consolidated Balance Sheet into the Consolidated Statement of Income (Effective Portion) for the Three Months Ended June 30,		Location of Derivative Gain or (Loss) Recognized in the Consolidated Statement of Income (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Derivative Gain or (Loss) Recognized in the Consolidated Statement of Income (Ineffective Portion and Amount Excluded from Effectiveness Testing) for the Three Months Ended June 30,
	2012	2011		2012	2011		2012	2011
Commodity Contracts – Exploration & Production segment	$31,358	$25,399	Operating Revenue	$ 20,643	$ (5,548)	Operating Revenue	$-	$ 570
Commodity Contracts – Energy Marketing segment	$(201)	$737	Purchased Gas	$956	$1,793	Operating Revenue	$-	$ -
Commodity Contracts – Pipeline & Storage segment	$(725)	$242	Operating Revenue	$-	$-	Operating Revenue	$-	$-
Total	$30,432	$26,378		$21,599	$ (3,755)		$-	$570

The Effect of Derivative Financial Instruments on the Statement of Financial Performance for the Nine Months Ended June 30, 2012 and 2011 (Thousands of Dollars)
Derivatives in Cash Flow Hedging Relationships	Amount of Derivative Gain or (Loss) Recognized in Other Comprehensive Income (Loss) on the Consolidated Statement of Comprehensive Income (Loss) (Effective Portion) for the Nine Months Ended June 30,		Location of Derivative Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) on the Consolidated Balance Sheet into the Consolidated Statement of Income (Effective Portion)	Amount of Derivative Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) on the Consolidated Balance Sheet into the Consolidated Statement of Income (Effective Portion) for the Nine Months Ended June 30,		Location of Derivative Gain or (Loss) Recognized in the Consolidated Statement of Income (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Derivative Gain or (Loss) Recognized in the Consolidated Statement of Income (Ineffective Portion and Amount Excluded from Effectiveness Testing) for the Nine Months Ended June 30,
	2012	2011		2012	2011		2012	2011
Commodity Contracts – Exploration & Production segment	$40,897	$(42,969)	Operating Revenue	$38,633	$5,415	Operating Revenue	$-	$570
Commodity Contracts – Energy Marketing segment	$6,337	$1,340	Purchased Gas	$10,440	$7,095	Operating Revenue	$-	$-
Commodity Contracts – Pipeline & Storage segment	$(149)	$27	Operating Revenue	$576	$-	Operating Revenue	$-	$-
Total	$47,085	$(41,602)		$49,649	$12,510		$-	$ 570

Schedule Of Offset For Derivative Instruments Designated And Qualify As Fair Value Hedge

Consolidated Statement of Income	Gain/(Loss) on Derivative	Gain/(Loss) on Commitment
Operating Revenues	$ 4,304,103	$ (4,304,103)
Purchased Gas	$(196,930)	$196,930

Schedule Of Derivatives In Fair Value Hedging Relationships

Derivatives in Fair Value Hedging Relationships – Energy Marketing segment	Location of Derivative Gain or (Loss) Recognized in the Consolidated Statement of Income	Amount of Derivative Gain or (Loss) Recognized in the Consolidated Statement of Income for the Nine Months Ended June 30, 2012 (In Thousands)
Commodity Contracts – Hedge of fixed price sales commitments of natural gas	Operating Revenues	$4,304
Commodity Contracts – Hedge of fixed price purchase commitments of natural gas	Purchased Gas	$(320)
Commodity Contracts – Hedge of natural gas held in storage	Purchased Gas	$123
		$4,107