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INCOME TAXES	9 Months Ended
INCOME TAXES	Sep. 30, 2011
INCOME TAXES [Abstract]
INCOME TAXES	(E) INCOME TAXES The combined statutory federal and state income tax rate for UIL Holdings for the three and nine month periods ended September 30, 2011 and 2010 was 40.4%. Differences in the treatment of certain transactions for book and tax purposes occur which cause the rate of UIL Holdings' reported income tax expense to differ from the statutory tax rate described above. The effective book income tax rates for the three and nine month periods ended September 30, 2011 were 44.1% and 39.6%, as compared to 41.6% and 40.5% for the three and nine month periods ended September 30, 2010.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

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+ Details