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LONG TERM CONTRACTUAL (Tables)
9 Months Ended
Sep. 30, 2011
Notes To Consolidated Financial Statements [Abstract] 
Long-term Purchase Commitment [Table Text Block]
PSNH                    
(Millions of Dollars)2012 2013 2014 2015 2016 Thereafter Totals
Renewable Energy Supply Contracts$5.1 $5.1 $59.9 $60.7 $70.9 $1,263.1 $1,464.8