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FS-76
Available-for-Sale Securities: The following is a summary by security type of NU's available-for-sale securities held in the NU
supplemental benefit trust and WMECO's spent nuclear fuel trust. These securities are recorded at fair value and included in current
and long-term portions of marketable securities on the accompanying consolidated balance sheets.
As of December 31, 2009
(Millions of Dollars)
Amortized
Cost
Pre-Tax
Gross
Unrealized
Gains (1)
Pre-Tax
Gross
Unrealized
Losses (1) Fair Value
NU supplemental benefit trust
U.S. government issued debt securities
(agency and treasury) $ 12.8 $ 0.3 $ (0.2) $ 12.9
Corporate debt securities 7.4 0.4 (0.1) 7.7
Asset backed debt securities 5.2 0.1 (0.1) 5.2
Municipal bonds 0.2 - - 0.2
Other 3.0 - - 3.0
Total NU supplemental benefit trust $ 28.6 $ 0.8 $ (0.4) $ 29.0
WMECO spent nuclear fuel trust
U.S. government issued debt securities
(agency and treasury) $ 17.0 $ - $ - $ 17.0
Corporate debt securities 17.4 0.1 (0.1) 17.4
Asset backed debt securities 1.1 - (0.2) 0.9
Municipal bonds 10.6 - - 10.6
Other 10.9 - - 10.9
Total WMECO spent nuclear fuel trust $ 57.0 $ 0.1 $ (0.3) $ 56.8
Total NU $ 85.6 $ 0.9 $ (0.7) $ 85.8
As of December 31, 2008
(Millions of Dollars)
Amortized
Cost (2)
Pre-Tax
Gross
Unrealized
Gains
Fair Value
NU supplemental benefit trust
United States equity securities $ 21.9 $ 1.1 $ 23.0
International equity securities 5.6 - 5.6
U.S. government issued debt securities
(agency and treasury) 13.1 0.8 13.9
Corporate debt securities 3.3 0.2 3.5
Asset backed securities 3.4 - 3.4
Other 4.1 - 4.1
Total NU supplemental benefit trust $ 51.4 $ 2.1 $ 53.5
WMECO spent nuclear fuel trust
Short-term investments and money markets $ 16.3 $ - $ 16.3
U.S. government issued debt securities
(agency and treasury) 15.4 0.1 15.5
Corporate debt securities 17.4 0.5 17.9
Asset backed securities 2.4 - 2.4
Other 3.6 - 3.6
Total WMECO spent nuclear fuel trust $ 55.1 $ 0.6 $ 55.7
Total NU $ 106.5 $ 2.7 $ 109.2
(1) Unrealized gains and losses on debt securities for the NU supplemental benefit trust and WMECO spent nuclear fuel trust are
recorded in Accumulated other comprehensive income/(loss) and Deferred debits and other assets - other, respectively, on the
accompanying consolidated balance sheets. For information related to the change in unrealized gains and losses for the NU
supplemental benefit trust included in Accumulated other comprehensive income/(loss), see Note 14, "Accumulated Other
Comprehensive Income/(Loss)," to the consolidated financial statements.
(2) Amounts are net of unrealized losses in an aggregate amount of $1.2 million, previously recorded as other-than-temporary
impairments. For further information, see Note 1D, "Summary of Significant Accounting Policies - Accounting Standards Recently
Adopted," to the consolidated financial statements.