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Derivative Financial Instruments (Tables)
 3 Months Ended
Mar. 31, 2012
Summary of Derivative Instruments [Abstract]  
Summary of recognized gains (losses) related to derivative financial instruments
Recognized Gains (Losses)
Three months ended March 31
 
 
 
(In millions)
2012
 
2011
Without hedge designation
 
 
 
Currency forwards
$
(1
)
 
$
(1
)
Total without hedge designation
(1
)
 
(1
)
Trading activities
 
 
 
Futures sold, not yet purchased
1

 
—

Total
$
—

 
$
(1
)
Summary of aggregate contractual or notional amounts and gross estimated fair values related to derivative financial instruments
Derivative Financial Instruments
March 31, 2012
Contractual/
Notional
Amount
 
Estimated Fair Value
(In millions)
 
Asset
 
(Liability)
Without hedge designation
 
 
 
 
 
Credit default swaps - purchased protection
$
20

 
$
—

 
$
(1
)
Currency forwards
33

 
—

 
(1
)
Equity warrants
4

 
—

 
—

Total
$
57

 
$
—

 
$
(2
)

December 31, 2011
Contractual/
Notional
Amount
 
Estimated Fair Value
(In millions)
 
Asset
 
(Liability)
Without hedge designation
 
 
 
 
 
Credit default swaps - purchased protection
$
20

 
$
—

 
$
(1
)
Currency forwards
22

 
1

 
—

Equity warrants
4

 
—

 
—

Total
$
46

 
$
1

 
$
(1
)