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Settlement and Other Risk Management (Tables)
12 Months Ended
Dec. 31, 2012
Settlement and Other Risk Management [Abstract]  
Estimated Settlement Exposure and Portion of Uncollateralized Settlement Exposure for MasterCard-Branded Transactions
The Company's estimated settlement exposure from MasterCard, Cirrus and Maestro branded transactions was as follows:
 
December 31,
2012
 
December 31, 2011
 
 
(in millions)
 
Gross settlement exposure
$
37,768

 
$
39,102

 
Collateral held for settlement exposure
(3,775
)
 
(3,482
)
1 

Net uncollateralized settlement exposure
$
33,993

 
$
35,620

 

1 Represents collateral held against MasterCard-branded exposure only.