Provision for Uncollectible Accounts (Tables)

6 Months Ended

Jun. 30, 2013

Notes To Consolidated Financial Statements [Abstract]

Schedule Of Accounts Notes Loans And Financing Receivable Text Block

(Millions of Dollars)	As of June 30, 2013		As of December 31, 2012
NU	$	186.7	$	165.5
CL&P		87.4		77.6
NSTAR Electric		46.1		44.1
PSNH		7.9		6.8
WMECO		10.2		8.5