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Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2012
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
Schedule of Intangible Assets
Intangible assets consisted of the following:
At December 31,
2012
 
2011
 
(in millions)
Mortgage servicing rights
$
179

 
$
227

Purchased credit card relationships
60

 

Other
8

 
15

Total other intangible assets
$
247

 
$
242

Fair Value of Residential MSRs
Fair value of residential MSRs is calculated using the following critical assumptions:
At December 31,
2012
 
2011
Annualized constant prepayment rate (“CPR”)
22.4
%
 
21.4
%
Constant discount rate
11.3
%
 
11.3
%
Weighted average life
3.4

 
3.4

Residential MSRs Activity
Residential MSRs activity is summarized in the following table:
Year Ended December 31,
2012
 
2011
 
(in millions)
Fair value of MSRs:
 
 
 
Beginning balance
$
220

 
$
394

Additions related to loan sales
24

 
39

Changes in fair value due to:
 
 
 
Change in valuation inputs or assumptions used in the valuation models
(15
)
 
(136
)
Realization of cash flows
(61
)
 
(77
)
Ending balance
$
168

 
$
220

Residential Mortgage Loans Serviced for Others
Information regarding residential mortgage loans serviced for others, which are not included in the consolidated balance sheet, is summarized in the following table:
At December 31,
2012
 
2011
 
(in millions)
Outstanding principal balances at period end
$
32,041

 
$
37,839

Custodial balances maintained and included in noninterest bearing deposits at period end
$
810

 
$
838