CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Unaudited) [Abstract]
Net Income	$ 12,012	$ 14,170	$ 59,088	$ 66,228
Other Comprehensive Income (Loss), net	(154)	(26)	201	146
Comprehensive income	11,858	14,144	59,289	66,374
Less:
Preferred Stock Dividends of Subsidiary, Noncontrolling Interests	13	14	39	28
Comprehensive Income attributable to UIL Holdings	$ 11,845	$ 14,130	$ 59,250	$ 66,346

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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+ Details

- Definition

Amount of net Income or Loss for the period allocated to noncontrolling preferred unit holders in an entity included in the reporting entity's consolidated financial statements.

+ References+ Details

- Definition

This element represents Other Comprehensive Income or Loss, Net of Tax, for the period. Includes deferred gains or losses on qualifying hedges, unrealized holding gains or losses on available-for-sale securities, minimum pension liability, and cumulative translation adjustment. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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