Derivatives And Risk Management (Tables)

3 Months Ended

Mar. 31, 2012

Derivatives And Risk Management [Abstract]

Energy Commodity Derivatives

	Purchases								Sales
	Electric Derivatives				Gas Derivatives				Electric Derivatives				Gas Derivatives
Year	Physical MWH		Financial MWH		Physical mmBTUs		Financial mmBTUs		Physical MWH		Financial MWH		Physical mmBTUs		Financial mmBTUs
2012		976		845		28,466		7,577		638		433		6,819		4,634
2013		537		245		11,895		10,270		310		491		1,533		1,727
2014		366		0		5,939		5,586		286		246		1,050		225
2015		379		—		3,013		980		285		—		—		—
2016		367		—		1,137		455		287		—		—		—
Thereafter		949		—		—		—		730		—		—		—

Foreign Currency Exchange Contracts

	March 31, 2012			December 31, 2011
Number of contracts		31			28
Notional amount (in United States dollars)	$	4,258		$	7,033
Notional amount (in Canadian dollars)		4,235			7,192
Derivatives in other current assets (liabilities)		(25	)		32

Interest Rate Swap Agreements

	March 31, 2012			December 31, 2011
Number of contracts		3			3
Notional amount	$	75,000		$	75,000
Mandatory cash settlement date		July 2012			July 2012
Current derivative liability		(9,241	)		(16,253	)
Number of contracts		2			2
Notional amount	$	85,000		$	85,000
Mandatory cash settlement date		June 2013			June 2013
Non-current derivative asset (liability)		5,084			(2,642	)

Derivative Instruments Summary

The following table presents the fair values and locations of derivative instruments recorded on the Condensed Consolidated Balance Sheet as of March 31, 2012 (in thousands):

		Fair Value
Derivative	Balance Sheet Location	Asset		Liability			Net Asset (Liability)
Foreign currency contracts	Other current liabilities	$	—	$	(25	)	$	(25	)
Interest rate contracts	Other current liabilities		—		(9,241	)		(9,241	)
Interest rate contracts	Other intangibles, property and Investments - net		5,084		—			5,084
Commodity contracts	Current utility energy commodity derivative assets		2,647		(365	)		2,282
Commodity contracts	Non-current utility energy commodity derivative assets		8,148		(5,965	)		2,183
Commodity contracts	Current utility energy commodity derivative liabilities		10,461		(84,065	)		(73,604	)
Commodity contracts	Other non-current liabilities and deferred credits		1,147		(35,864	)		(34,717	)
Total derivative instruments recorded on the balance sheet		$	27,487	$	(135,525	)	$	(108,038	)

The following table presents the fair values and locations of derivative instruments recorded on the Condensed Consolidated Balance Sheet as of December 31, 2011 (in thousands):

		Fair Value
Derivative	Balance Sheet Location	Asset		Liability			Net Asset (Liability)
Foreign currency contracts	Other current assets	$	32	$	—		$	32
Interest rate contracts	Other current liabilities		—		(16,253	)		(16,253	)
Interest rate contracts	Other non-current liabilities and deferred credits		—		(2,642	)		(2,642	)
Commodity contracts	Current utility energy commodity derivative assets		1,618		(479	)		1,139
Commodity contracts	Non-current utility energy commodity derivative assets		185		—			185
Commodity contracts	Current utility energy commodity derivative liabilities		40,090		(110,914	)		(70,824	)
Commodity contracts	Other non-current liabilities and deferred credits		44,308		(84,838	)		(40,530	)
Total derivative instruments recorded on the balance sheet		$	86,233	$	(215,126	)	$	(128,893	)