CONSOLIDATED BALANCE SHEET (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010
Current Assets
Unrestricted cash and temporary cash investments	$ 30,999		$ 90,281
Restricted cash	6,522		2,399
Accounts receivable less allowance of $10,939 and $10,571, respectively	180,465		205,992
Other accounts receivable	8,170		28,181
Unbilled revenues	71,984		81,659
Current regulatory assets	102,900		115,848
Natural gas in storage, at average cost	111,516		108,080
Materials and supplies, at average cost	8,370		6,755
Deferred income taxes	41,635		24,039
Refundable taxes	74,983		36,570
Prepayments	15,357		16,690
Current portion of derivative assets (Note A), (Note K)	14,189		6,057
Other	138		1,275
Total Current Assets	667,228		723,826
Other investments
Equity investment in GenConn (Note H)	131,082		62,786
Other	22,571		22,931
Total Other investments	153,653		85,717
Net Property, Plant and Equipment	2,570,355		2,327,450
Regulatory Assets (future amounts due from customers through the ratemaking process)	983,222		925,889
Deferred Charges and Other Assets
Unamortized debt issuance expenses	17,631		19,238
Related party note receivable (Note H)	0		61,983
Other long-term receivable	1,278		1,281
Derivative assets (Note A), (Note K)	73,264		28,131
Goodwill (Note N)	266,797		298,890
Other	11,181		9,433
Total Deferred Charges and Other Assets	370,151		418,956
Total Assets	4,744,609	[1]	4,481,838	[1]
Current Liabilities
Line of credit borrowings	235,000		7,000
Current portion of long-term debt	13,712		154,114
Accounts payable	194,641		199,816
Dividends payable	21,847		21,801
Accrued liabilities	78,138		80,488
Current regulatory liabilities	26,245		53,601
Taxes accrued	21,870		26,405
Interest accrued	21,527		22,868
Current portion of derivative liabilities (Note A), (Note K)	28,888		13,246
Total Current Liabilities	641,868		579,339
Noncurrent Liabilities
Pension accrued	237,083		265,564
Connecticut Yankee contract obligation	14,247		17,175
Other post-retirement benefits accrued	84,810		89,813
Derivative liabilities (Note A), (Note K)	239,147		129,560
Other	75,268		75,119
Total Noncurrent Liabilities	650,555		577,231
Deferred Income Taxes (future tax liabilities owed to taxing authorities)	388,553		354,164
Regulatory Liabilities (future amounts owed to customers through the ratemaking process)	420,175		382,366
Commitments and Contingencies (Note J)
Capitalization (Note B)
Long-term debt, net of unamortized discount and premiun	1,548,347		1,511,768
Preferred Stock of Subsidiary, Redeemable preferred stock, noncontrolling interests	750		828
Common Stock Equity
Common stock	931,153		927,494
Paid-in capital	19,791		17,026
Retained earnings	143,792		131,456
Accumulated other comprehensive income (loss)	(375)		166
Net Common Stock Equity	1,094,361		1,076,142
Total Capitalization	2,643,458		2,588,738
Total Liabilities and Capitalization	$ 4,744,609		$ 4,481,838

[1] Includes $266.8 million and $298.9 million of goodwill in the Gas Distribution segment as of December 31, 2011 and December 31, 2010.