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Securities (Tables)
 12 Months Ended
Dec. 31, 2012
Investments, Debt and Equity Securities [Abstract]  
Amortized Cost and Fair Value of the Securities Availabale-for-Sale and Held-to-Maturity
Securities consisted of the following available-for-sale investments:
December 31, 2012
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
 
(in millions)
Continuing operations:
 
 
 
 
 
 
 
Money market funds
$
80

 
$
—

 
$
—

 
$
80

Securities available-for-sale - continuing operations
$
80

 
$
—

 
$
—

 
$
80

Securities available-for-sale - discontinued operations(1)
$
1,231

 
$
180

 
$
—

 
$
1,411

 
December 31, 2011
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
 
(in millions)
Continuing operations:
 
 
 
 
 
 
 
U.S. Treasury
$
80

 
$
—

 
$
—

 
$
80

U.S. government sponsored enterprises(2)
1

 
—

 
—

 
1

U.S. corporate debt securities(3)
57

 
1

 
(1
)
 
57

Foreign debt securities(4)
26

 
—

 
—

 
26

Equity securities
10

 
—

 
—

 
10

Money market funds
13

 
—

 
—

 
13

Subtotal
187

 
1

 
(1
)
 
187

Accrued investment income
1

 
—

 
—

 
1

Securities available-for-sale - continuing operations
$
188

 
$
1

 
$
(1
)
 
$
188

Securities available-for-sale - discontinued operations(1)
$
1,694

 
$
165

 
$
(8
)
 
$
1,851

 
(1) 
Securities available-for-sale in our discontinued operations relates to our discontinued Insurance business and primarily consists of U.S. corporate debt securities, money market funds and foreign debt securities at December 31, 2012 and 2011.
(2) 
Represents mortgage-backed securities issued by the Federal National Mortgage Association and the Federal Home Loan Mortgage Corporation as of December 31, 2011.
(3) 
The majority of our U.S. corporate debt securities represented investments in the financial services, consumer products and insurance sectors at December 31, 2011.
(4) 
We did not hold any foreign debt securities issued by the governments of Portugal, Ireland, Italy, Greece or Spain at December 31, 2011. We did not hold any foreign debt securities at December 31, 2012.
Gross Unrealized Losses and Related Fair Values
The table below provides a summary of gross unrealized losses and related fair values as of December 31, 2011 for available-for-sale securities for continuing operations classified as to the length of time the losses have existed.
 
Less Than One Year
 
Greater Than One Year
December 31, 2011
Number
of
Securities
 
Gross
Unrealized
Losses
 
Aggregate
Fair Value
of Investments
 
Number
of
Securities
 
Gross
Unrealized
Losses
 
Aggregate
Fair Value
of Investments
 
(dollars are in millions)
U.S. corporate debt securities
17

 
$
(1
)
 
$
26

 
—

 
$
—

 
$
—

Foreign debt securities
10

 
—

 
15

 
—

 
—

 
—

Equity Securities
1

 
—

 
5

 
—

 
—

 
—

 
28

 
$
(1
)
 
$
46

 
—

 
$
—

 
$
—
Realized Gains and Losses for continuting operations on Available-for-Sale Securities
The following table summarizes gross realized gains and losses for continuing operations during 2012, 2011 or 2010:
Year Ended December 31,
2012
 
2011
 
2010
 
(in millions)
Gross realized gains on available-for-sale securities
$
3

 
$
26

 
$
—

Gross realized losses on available-for-sale securities
—

 
11

 
—