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Mortgage Servicing Rights (Tables)
3 Months Ended
Mar. 31, 2012
Mortgage Servicing Rights [Abstract]  
Changes in fair value of capitalized MSRs
                 

Three Months Ended March 31

(Dollars in Millions)

     
  2012     2011  

Balance at beginning of period

  $ 1,519     $ 1,837  

Rights purchased

    13       7  

Rights capitalized

    261       213  

Changes in fair value of MSRs

               

Due to change in valuation assumptions (a)

    65       102  

Other changes in fair value (b)

    (121     (86
                 

Balance at end of period

  $ 1,737     $ 2,073  
                 

 

(a) Principally reflects changes in prepayment speeds, and to a lessor extent, changes in discount rates and escrow earnings assumptions, primarily arising from interest rate changes.
(b) Primarily represents changes due to collection/realization of expected cash flows over time (decay).
Sensitivity to changes in interest rates to fair value of the MSR's portfolio and the related derivative instruments
                                                                 
    March 31, 2012     December 31, 2011  
(Dollars in Millions)   Down
50 bps
    Down
25 bps
    Up
25 bps
    Up
50 bps
    Down
50 bps
    Down
25 bps
    Up
25 bps
    Up
50 bps
 

Net fair value

  $ 23     $ 4     $ 6     $ 23     $ 21     $ 6     $     $ 6  
                                                                 
MSRs and related characteristics by portfolio
                                                                 
    March 31, 2012     December 31, 2011  
(Dollars in Millions)   MRBP     Government     Conventional (b)     Total     MRBP     Government     Conventional (b)     Total  

Servicing portfolio

  $ 13,532     $ 34,253     $ 152,386     $ 200,171     $ 13,357     $ 32,567     $ 145,158     $ 191,082  

Fair market value

  $ 156     $ 316     $ 1,265     $ 1,737     $ 155     $ 290     $ 1,074     $ 1,519  

Value (bps) (a)

    115       92       83       87       116       89       74       79  

Weighted-average servicing fees (bps)

    40       35       29       31       40       36       29       31  

Multiple (value/servicing fees)

    2.88       2.63       2.86       2.81       2.90       2.47       2.55       2.55  

Weighted-average note rate

    5.42     4.95     4.87     4.92     5.50     5.08     4.97     5.03

Age (in years)

    4.3       2.5       2.7       2.8       4.2       2.5       2.8       2.8  

Expected prepayment (constant prepayment rate)

    13.0     19.1     19.8     19.2     12.9     21.1     22.1     21.3

Expected life (in years)

    6.3       4.5       4.2       4.4       6.4       4.0       3.8       4.0  

Discount rate

    12.1     11.4     10.0     10.4     12.1     11.3     10.0     10.4
                                                                 

 

(a) Value is calculated as fair market value divided by the servicing portfolio.
(b) Represents loans sold primarily to GSEs.