Disclosures About Derivative Instruments and Hedging Activities (Tables)

3 Months Ended

Dec. 31, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Balance sheet location and fair value of derivative assets and liabilities

The following table provides information regarding the balance sheet location and fair values of our derivative assets and liabilities existing as of December 31, 2012 and 2011:

	Derivative Assets					Derivative (Liabilities)
	Balance Sheet	Fair Value				Balance Sheet	Fair Value
	Location	2012		2011		Location	2012			2011
Derivatives Designated as Hedging Instruments:
Interest rate contracts	Derivative financial instruments	$	4,226	$	—	Derivative financial instruments and Other noncurrent liabilities	$	(30,412	)	$	(21,662	)
Derivatives Subject to Utility Rate Regulation:
Commodity contracts	Derivative financial instruments	420		18		Derivative financial instruments and Other noncurrent liabilities	(9,041		)	(16,118		)
Derivatives Not Designated as Hedging Instruments:
Commodity contracts	Derivative financial instruments	114		—		Derivative financial instruments	—			(2		)
Total Derivatives		$	4,760	$	18		$	(39,453	)	$	(37,782	)

Effects of derivative instruments on the Condensed Consolidated Statements of Income and changes in AOCI and noncontrolling interest

The following table provides information on the effects of derivative instruments on the Condensed Consolidated Statements of Income and changes in AOCI for three months ended December 31, 2012 and 2011:

Three Months EndedDecember 31,:

	Gain (Loss) Recognized in AOCI						Gain (Loss) Reclassified from AOCI into Income						Location of Gain or
	2012			2011			2012			2011			(Loss) Reclassified from AOCI into Income
Cash Flow Hedges:
Interest rate contracts	$	4,336		$	(3,077	)	$	(203	)	$	(291	)	Interest expense
Derivatives Not Designated
as Hedging Instruments:	Gain (Loss) Recognized in Income
	2012			2011
Commodity contracts	$	(2	)	$	(51	)							Operating expenses/other income, net