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Fair Values of Assets and Liabilities (Tables)
3 Months Ended
Mar. 31, 2018
Fair Value Disclosures [Abstract]  
Valuation Assumption Ranges for MSRs

The following table shows the significant valuation assumption ranges for MSRs at March 31, 2018:

 

     Minimum     Maximum     Average  

Expected prepayment

    6     17     9

Option adjusted spread

    7       10       8  
Valuation Assumption Ranges for Derivative Commitments

The following table shows the significant valuation assumption ranges for the Company’s derivative commitments to purchase and originate mortgage loans at March 31, 2018:

 

     Minimum     Maximum     Average  

Expected loan close rate

    7     100     80

Inherent MSR value (basis points per loan)

    7       194       107  
Balances of Assets and Liabilities Measured at Fair Value on Recurring Basis

The following table summarizes the balances of assets and liabilities measured at fair value on a recurring basis:

 

(Dollars in Millions)   Level 1      Level 2      Level 3      Netting     Total  

March 31, 2018

            

Available-for-sale investment securities

            

U.S. Treasury and agencies

  $ 21,258      $ 708      $      $     $ 21,966  

Mortgage-backed securities

            

Residential agency

           38,443                     38,443  

Commercial agency

           7                     7  

Other asset-backed securities

           415                     415  

Obligations of state and political subdivisions

           6,294                     6,294  

Total available-for-sale

    21,258        45,867                     67,125  

Mortgage loans held for sale

           3,271                     3,271  

Mortgage servicing rights

                  2,780              2,780  

Derivative assets

    17        1,611        502        (821     1,309  

Other assets

    199        1,615                     1,814  

Total

  $ 21,474      $ 52,364      $ 3,282      $ (821   $ 76,299  

Derivative liabilities

  $      $ 1,618      $ 634      $ (1,328   $ 924  

Short-term borrowings and other liabilities (a)

    183        1,167                     1,350  

Total

  $ 183      $ 2,785      $ 634      $ (1,328   $ 2,274  

December 31, 2017

            

Available-for-sale investment securities

            

U.S. Treasury and agencies

  $ 22,572      $ 729      $      $     $ 23,301  

Mortgage-backed securities

            

Residential agency

           38,031                     38,031  

Commercial agency

           6                     6  

Other asset-backed securities

           419                     419  

Obligations of state and political subdivisions

           6,358                     6,358  

Other

    22                            22  

Total available-for-sale

    22,594        45,543                     68,137  

Mortgage loans held for sale

           3,534                     3,534  

Mortgage servicing rights

                  2,645              2,645  

Derivative assets

    6        1,960        516        (652     1,830  

Other assets

    154        1,163                     1,317  

Total

  $ 22,754      $ 52,200      $ 3,161      $ (652   $ 77,463  

Derivative liabilities

  $      $ 1,958      $ 409      $ (1,130   $ 1,237  

Short-term borrowings and other liabilities (a)

    101        894                     995  

Total

  $ 101      $ 2,852      $ 409      $ (1,130   $ 2,232  

 

Note: Excluded from the table above are equity investments without readily determinable fair values. The Company has elected to carry these investments at historical cost, adjusted for impairment and any changes resulting from observable price changes for identical or similar investments of the issuer. The aggregate carrying amount of these equity investments was $74 million at March 31, 2018. The Company has not recorded impairments or adjustments for observable price changes on these equity investments during the first three months of 2018 or on a cumulative basis.
(a) Primarily represents the Company’s obligation on securities sold short required to be accounted for at fair value per applicable accounting guidance.
Changes in Fair Value for All Assets and Liabilities Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3)

The following table presents the changes in fair value for all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three months ended March 31:

 

(Dollars in Millions)   Beginning
of Period
Balance
    Net Gains
(Losses)
Included in
Net Income
    Net Gains
(Losses)
Included in
Other
Comprehensive
Income (Loss)
    Purchases     Sales     Principal
Payments
    Issuances     Settlements     End
of Period
Balance
    Net Change in
Unrealized
Gains (Losses)
Relating to Assets
and Liabilities
Held at End of Period
 

2018

                   

Mortgage servicing rights

  $ 2,645     $ 33   (c)    $     $ 2     $     $     $ 100  (e)    $     $ 2,780     $ 33   (c) 

Net derivative assets and liabilities

    107       (251 ) (d)            1       (6           17             (132     (212 ) (f) 

2017

                   

Available-for-sale investment securities

 

                 

Residential non-agency mortgage-backed securities

                   

Prime (a)

  $ 242     $     $ (2   $     $ (234   $ (6   $     $     $     $  

Non-prime (b)

    195             (17           (175     (3                        

Other asset-backed securities

    2                         (2                              

Corporate debt securities

    9             2             (11                              

Total available-for-sale

    448             (17 ) (g)            (422     (9                        

Mortgage servicing rights

    2,591       (73 ) (c)            2                   122  (e)            2,642       (73 ) (c) 

Net derivative assets and liabilities

    171       46   (h)          1       (3               (50     165       (7 ) (i) 

 

(a) Prime securities are those designated as such by the issuer at origination. When an issuer designation is unavailable, the Company determines at acquisition date the categorization based on asset pool characteristics (such as weighted-average credit score, loan-to-value, loan type, prevalence of low documentation loans) and deal performance (such as pool delinquencies and security market spreads).
(b) Includes all securities not meeting the conditions to be designated as prime.
(c) Included in mortgage banking revenue.
(d) Approximately $(271) million included in other noninterest income and $20 million included in mortgage banking revenue.
(e) Represents MSRs capitalized during the period.
(f) Approximately $(240) million included in other noninterest income and $28 million included in mortgage banking revenue.
(g) Included in changes in unrealized gains and losses on investment securities available-for-sale.
(h) Approximately $(19) million included in other noninterest income and $65 million included in mortgage banking revenue.
(i) Approximately $(49) million included in other noninterest income and $42 million included in mortgage banking revenue.
Adjusted Carrying Values for Assets Measured at Fair Value on Nonrecurring Basis

The following table summarizes the balances as of the measurement date of assets measured at fair value on a nonrecurring basis, and still held as of the reporting date:

 

    March 31, 2018              December 31, 2017  
(Dollars in Millions)   Level 1      Level 2      Level 3      Total              Level 1      Level 2      Level 3      Total  

Loans (a)

  $      $      $ 22      $ 22           $      $      $ 150      $ 150  

Other assets (b)

                  18        18                               31        31  

 

(a) Represents the carrying value of loans for which adjustments were based on the fair value of the collateral, excluding loans fully charged-off.
(b) Primarily represents the fair value of foreclosed properties that were measured at fair value based on an appraisal or broker price opinion of the collateral subsequent to their initial acquisition.
Losses Recognized Related to Nonrecurring Fair Value Measurements of Individual Assets or Portfolios

The following table summarizes losses recognized related to nonrecurring fair value measurements of individual assets or portfolios for the three months ended March 31:

 

(Dollars in Millions)         2018            2017  

Loans (a)

  $ 23      $ 37  

Other assets (b)

    5        7  

 

(a) Represents write-downs of loans which were based on the fair value of the collateral, excluding loans fully charged-off.
(b) Primarily represents related losses of foreclosed properties that were measured at fair value subsequent to their initial acquisition.
Differences Between Aggregate Fair Value Carrying Amount of MLHFS for which Fair Value Option has been Elected and Aggregate Unpaid Principal Amount Contractually Obligated to Receive at Maturity

The following table summarizes the differences between the aggregate fair value carrying amount of MLHFS for which the fair value option has been elected and the aggregate unpaid principal amount that the Company is contractually obligated to receive at maturity:

 

    March 31, 2018             December 31, 2017  
(Dollars in Millions)   Fair
Value
Carrying
Amount
     Aggregate
Unpaid
Principal
     Carrying
Amount Over
(Under) Unpaid
Principal
            Fair
Value
Carrying
Amount
     Aggregate
Unpaid
Principal
     Carrying
Amount Over
(Under) Unpaid
Principal
 

Total loans

  $ 3,271      $ 3,208      $ 63          $ 3,534      $ 3,434      $ 100  

Nonaccrual loans

    1        2        (1          1        2        (1

Loans 90 days or more past due

    1        1                       1        1         
Estimated Fair Values of Financial Instruments

The estimated fair values of the Company’s financial instruments are shown in the table below:

 

    March 31, 2018     December 31, 2017  
   

Carrying

Amount

          Fair Value           

Carrying

Amount

          Fair Value  
(Dollars in Millions)       Level 1     Level 2     Level 3     Total               Level 1     Level 2     Level 3     Total  

Financial Assets

                                                                                                       

Cash and due from banks

  $ 19,246       $ 19,246     $     $     $ 19,246         $ 19,505       $ 19,505     $     $     $ 19,505  

Federal funds sold and securities purchased under resale agreements

    207               207             207           93               93             93  

Investment securities held-to-maturity

    44,612         4,553       38,842       13       43,408           44,362         4,613       39,095       15       43,723  

Loans held for sale (a)

    1,506                     1,506       1,506           20                     20       20  

Loans

    273,993                     275,311       275,311           276,507                     279,391       279,391  

Other

    2,442               1,281       1,161       2,442           2,393               1,037       1,364       2,401  

Financial Liabilities

                           

Time deposits

    39,585               39,179             39,179           33,356               33,120             33,120  

Short-term borrowings (b)

    16,353               16,129             16,129           15,656               15,447             15,447  

Long-term debt

    33,201               32,963             32,963           32,259               32,377             32,377  

Other

    1,546                           1,546       1,546               1,556                           1,556       1,556  

 

(a) Excludes mortgages held for sale for which the fair value option under applicable accounting guidance was elected.
(b) Excludes the Company’s obligation on securities sold short required to be accounted for at fair value per applicable accounting guidance.