MARKETABLE SECURITIES (Tables)

12 Months Ended

Dec. 31, 2016

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Securities Reconciliation

The following is a summary of available-for-sale securities, which are recorded at fair value and are included in current and long-term Marketable Securities on the balance sheets.



	As of December 31,
	2016									2015
(Millions of Dollars)	Amortized Cost		Pre-Tax Unrealized Gains		Pre-Tax Unrealized Losses			Fair Value		Amortized Cost		Pre-Tax Unrealized Gains		Pre-Tax Unrealized Losses			Fair Value
Eversource
Debt Securities	$	296.2	$	1.1	$	(2.1	)	$	295.2	$	256.5	$	4.5	$	(0.6	)	$	260.4
Equity Securities	203.3		62.3		(1.2		)	264.4		215.3		59.2		(3.4		)	271.1

Investments Classified by Contractual Maturity Date

As of December 31, 2016, the contractual maturities of available-for-sale debt securities were as follows:



Eversource (Millions of Dollars)	Amortized Cost		Fair Value
Eversource (Millions of Dollars)	Amortized Cost		Fair Value
Less than one year ⁽¹⁾	$	60.5	$	60.3
One to five years	45.4		45.8
Six to ten years	59.7		58.3
Greater than ten years	130.6		130.8
Total Debt Securities	$	296.2	$	295.2


⁽¹⁾	Amounts in the Less than one year category include securities in the CYAPC and YAEC nuclear decommissioning trusts, which are restricted and are classified in long-term Marketable Securities on the balance sheets.

Marketable Securities Recorded at Fair Value

The following table presents the marketable securities recorded at fair value on a recurring basis by the level in which they are classified within the fair value hierarchy:



Eversource (Millions of Dollars)	As of December 31,
Eversource (Millions of Dollars)	2016		2015
Level 1:
Mutual Funds and Equities	$	274.0	$	285.3
Money Market Funds	54.8		26.9
Total Level 1	$	328.8	$	312.2
Level 2:
U.S. Government Issued Debt Securities (Agency and Treasury)	$	63.0	$	46.6
Corporate Debt Securities	41.1		43.9
Asset-Backed Debt Securities	18.5		20.0
Municipal Bonds	107.5		111.4
Other Fixed Income Securities	10.3		11.6
Total Level 2	$	240.4	$	233.5
Total Marketable Securities	$	569.2	$	545.7