Provision for Uncollectible Accounts (Tables)

6 Months Ended

Jun. 30, 2012

Notes To Consolidated Financial Statements [Abstract]

Schedule Of Accounts Notes Loans And Financing Receivable Text Block

(Millions of Dollars)	As of June 30, 2012		As of December 31, 2011(1)
NU	$	93.1	$	34.9
CL&P		11.8		14.8
NSTAR Electric		44.7		27.1
PSNH		7.9		7.2
WMECO		3.7		4.6