Disclosures About Derivative Instruments and Hedging Activities (Tables)

9 Months Ended

Jun. 30, 2013

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 June 30, 2013 and 2012:

	Derivative Assets					Derivative (Liabilities)
	Balance Sheet	Fair Value				Balance Sheet	Fair Value
	Location	2013		2012		Location	2013			2012
Derivatives Designated as Hedging Instruments:
Interest rate contracts	Derivative financial instruments	$	8,125	$	—	Derivative financial instruments and Other noncurrent liabilities	$	(15,306	)	$	(28,917	)
Derivatives Subject to Utility Rate Regulation:
Commodity contracts	Derivative financial instruments	67		545		Derivative financial instruments and Other noncurrent liabilities	(7,644		)	(13,539		)
Derivatives Not Designated as Hedging Instruments:
Commodity contracts	Derivative financial instruments	36		—		Derivative financial instruments	—			(17		)
Total Derivatives		$	8,228	$	545		$	(22,950	)	$	(42,473	)

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 and nine months ended June 30, 2013 and 2012:

Three Months Ended June 30, :
	Gain (Loss) Recognized in AOCI						Gain (Loss) Reclassified from AOCI into Income						Location of Gain or
	2013			2012			2013			2012			(Loss) Reclassified from AOCI into Income
Cash Flow Hedges:
Interest rate contracts	$	12,776		$	(11,573	)	$	(203	)	$	(484	)	Interest expense
Derivatives Not Designated
as Hedging Instruments:	Gain (Loss) Recognized in Income												Location of Gain (Loss) Recognized in Income
	2013			2012
Commodity contracts	$	(93	)	$	(127	)							Operating expenses/other income, net
Nine Months Ended June 30, :
	Gain (Loss) Recognized in AOCI						Gain (Loss) Reclassified from AOCI into Income						Location of Gain or
	2013			2012			2013			2012			(Loss) Reclassified from AOCI into Income
Cash Flow Hedges:
Interest rate contracts	$	23,228		$	(10,147	)	$	(608	)	$	(1,748	)	Interest expense
Derivatives Not Designated
as Hedging Instruments:	Gain (Loss) Recognized in Income												Location of Gain (Loss) Recognized in Income
	2013			2012
Commodity contracts	$	12		$	78								Operating expenses/other income, net