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Loan Servicing (Tables)
 3 Months Ended
Mar. 31, 2018
Transfers and Servicing [Abstract]  
Summary of Residential Mortgage Banking Activities
The following tables summarize residential mortgage banking activities:
(Dollars in millions)
 
Mar 31, 2018
 
Dec 31, 2017
UPB of residential mortgage and home equity loan servicing portfolio
 
$
117,827

 
$
118,424

UPB of residential mortgage loans serviced for others, primarily agency conforming fixed rate
 
88,746

 
89,124

Mortgage loans sold with recourse
 
473

 
490

Maximum recourse exposure from mortgage loans sold with recourse liability
 
245

 
251

Indemnification, recourse and repurchase reserves
 
36

 
37
Loan Servicing Activity and Data
As of / For The Three Months Ended
 

(Dollars in millions)
 
Mar 31, 2018
 
Mar 31, 2017
UPB of residential mortgage loans sold from LHFS
 
$
2,553

 
$
3,579

Pre-tax gains recognized on mortgage loans sold and held for sale
 
39

 
31

Servicing fees recognized from mortgage loans serviced for others
 
65

 
68

Approximate weighted average servicing fee on the outstanding balance of residential mortgage loans serviced for others
 
0.28
%
 
0.28
%
Weighted average interest rate on mortgage loans serviced for others
 
4.00

 
4.01
Analysis of Activity in Residential MSRs
The following table presents a roll forward of the carrying value of residential MSRs recorded at fair value:
Three Months Ended March 31,
 
 
(Dollars in millions)
 
2018
 
2017
Residential MSRs, carrying value, January 1
 
$
914

 
$
915

Additions
 
28

 
38

Change in fair value due to changes in valuation inputs or assumptions:
 
 
 
 
Prepayment speeds
 
61

 
17

OAS
 
2

 
—

Servicing costs
 
—

 
9

Realization of expected net servicing cash flows, passage of time and other
 
(32
)
 
(33
)
Residential MSRs, carrying value, March 31
 
$
973

 
$
946

 
 
 
 
 
Gains (losses) on derivative financial instruments used to mitigate the income statement effect of changes in residential MSR fair value
 
$
(63
)
 
$
(20
)
Residential MSRs Sensitivity
The sensitivity of the fair value of the residential MSRs to changes in key assumptions is included in the accompanying table:
 
 
March 31, 2018
 
December 31, 2017
 
 
Range
 
Weighted
Average
 
Range
 
Weighted
Average
(Dollars in millions)
 
Min
 
Max
 
 
Min
 
Max
 
Prepayment speed
 
6.0
%
 
8.7
%
 
7.9
%
 
7.1
%
 
10.1
%
 
9.1
%
Effect on fair value of a 10% increase
 
 
 
 
 
$
(28
)
 
 
 
 
 
$
(31
)
Effect on fair value of a 20% increase
 
 
 
 
 
(55
)
 
 
 
 
 
(60
)
 
 
 
 
 
 
 
 
 
 
 
 
 
OAS
 
8.3
%
 
8.9
%
 
8.5
%
 
8.4
%
 
8.9
%
 
8.5
%
Effect on fair value of a 10% increase
 
 
 
 
 
$
(30
)
 
 
 
 
 
$
(28
)
Effect on fair value of a 20% increase
 
 
 
 
 
(58
)
 
 
 
 
 
(54
)
 
 
 
 
 
 
 
 
 
 
 
 
 
Composition of loans serviced for others:
 
 
 
 
 
 
 
 
 
 
 
 
Fixed-rate residential mortgage loans
 
 
 
 
 
99.2
%
 
 
 
 
 
99.1
%
Adjustable-rate residential mortgage loans
 
 
 
 
 
0.8

 
 
 
 
 
0.9

Total
 
 

 
 

 
100.0
%
 
 
 
 
 
100.0
%
 
 
 
 
 
 
 
 
 
 
 
 
 
Weighted average life
 
 

 
 

 
6.9 years

 
 
 
 
 
6.4 years
Summary of Commercial Mortgage Banking Activities
The following table summarizes commercial mortgage banking activities for the periods presented:
(Dollars in millions)
Mar 31, 2018
 
Dec 31, 2017
UPB of CRE mortgages serviced for others
$
27,472

 
$
28,441

CRE mortgages serviced for others covered by recourse provisions
4,175

 
4,153

Maximum recourse exposure from CRE mortgages sold with recourse liability
1,225

 
1,218

Recorded reserves related to recourse exposure
5

 
5

CRE mortgages originated during the year-to-date period
1,383

 
6,753

Commercial MSRs at fair value
146

 
142