Provision for Uncollectible Accounts (Tables)

9 Months Ended

Sep. 30, 2012

Notes To Consolidated Financial Statements [Abstract]

Schedule Of Accounts Notes Loans And Financing Receivable Text Block

(Millions of Dollars)	As of September 30, 2012		As of December 31, 2011 (1)
NU	$	91.7	$	34.9
CL&P		11.2		14.8
NSTAR Electric		45.1		27.1
PSNH		9.5		7.2
WMECO		3.5		4.6