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Investment Securities (Tables)
 3 Months Ended
Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]  
Marketable Securities
Our investment portfolio includes various debt and equity securities. Our debt securities, which are classified as available-for-sale and held-to-maturity, include government securities, corporate bonds, asset-backed securities, and mortgage-backed securities. The cost, fair value, and gross unrealized gains and losses on available-for-sale and held-to-maturity debt securities were as follows.
 
 
March 31, 2019
 
December 31, 2018


Amortized cost

Gross unrealized

Fair value

Amortized cost

Gross unrealized

Fair value
($ in millions)

gains

losses

gains

losses

Available-for-sale securities
















Debt securities
















U.S. Treasury and federal agencies

$
1,990


$
1


$
(49
)

$
1,942


$
1,911


$
—


$
(60
)

$
1,851

U.S. States and political subdivisions

771


13


(3
)

781


816


3


(17
)

802

Foreign government

170


2


—


172


145


1


(1
)

145

Agency mortgage-backed residential

18,939


98


(193
)

18,844


17,486


47


(395
)

17,138

Agency mortgage-backed commercial
 
316

 
4

 
—

 
320

 
3

 
—

 
—

 
3

Mortgage-backed residential
 
2,912

 
7

 
(33
)
 
2,886

 
2,796

 
1

 
(111
)
 
2,686

Mortgage-backed commercial

725


—


(2
)

723


715


1


(2
)

714

Asset-backed

665


4


(1
)

668


723


2


(2
)

723

Corporate debt

1,301


7


(14
)

1,294


1,286


1


(46
)

1,241

Total available-for-sale securities (a) (b) (c)

$
27,789


$
136


$
(295
)

$
27,630


$
25,881


$
56


$
(634
)

$
25,303

Held-to-maturity securities
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Debt securities
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Agency mortgage-backed residential (d)
 
$
2,351

 
$
15

 
$
(28
)
 
$
2,338

 
$
2,319

 
$
6

 
$
(61
)
 
$
2,264

Asset-backed retained notes
 
36

 
—

 
—

 
36

 
43

 
—

 
—

 
43

Total held-to-maturity securities

$
2,387


$
15


$
(28
)

$
2,374


$
2,362

 
$
6

 
$
(61
)
 
$
2,307

(a)
Certain entities related to our Insurance operations are required to deposit securities with state regulatory authorities. These deposited securities totaled $12 million at both March 31, 2019, and December 31, 2018.
(b)
Certain available-for-sale securities are included in fair value hedging relationships. Refer to Note 17 for additional information.
(c)
Available-for-sale securities with a fair value of $4.1 billion and $9.2 billion at March 31, 2019, and December 31, 2018, respectively, were pledged to secure advances from the Federal Home Loan Bank (FHLB), short-term borrowings or repurchase agreements, or for other purposes as required by contractual obligation or law. Under these agreements, we have granted the counterparty the right to sell or pledge $985 million and $821 million of the underlying investment securities at March 31, 2019, and December 31, 2018, respectively.
(d)
Held-to-maturity securities with a fair value of $1.3 billion and $1.2 billion at March 31, 2019, and December 31, 2018, respectively, were pledged to secure advances from the FHLB.
Investments Classified by Contractual Maturity Date
The maturity distribution of debt securities outstanding is summarized in the following tables. Call or prepayment options may cause actual maturities to differ from contractual maturities.


Total

Due in one year or less

Due after one year through five years

Due after five years through ten years

Due after ten years
($ in millions)

Amount

Yield

Amount

Yield

Amount

Yield

Amount

Yield

Amount

Yield
March 31, 2019




















Fair value of available-for-sale securities (a)




















U.S. Treasury and federal agencies

$
1,942


1.7
%

$
28


1.7
%

$
1,341


1.6
%

$
573


1.9
%

$
—


—
%
U.S. States and political subdivisions

781


3.2


52


2.7


43


2.5


212


2.7


474


3.5

Foreign government

172


2.3


41


2.1


55


2.3


73


2.4


3


2.7

Agency mortgage-backed residential
 
18,844

 
3.4

 
—

 
—

 
—

 
—

 
52

 
1.9

 
18,792

 
3.4

Agency mortgage-backed commercial
 
320

 
3.2

 
—

 
—

 
3

 
3.1

 
83

 
3.3

 
234

 
3.2

Mortgage-backed residential

2,886


3.3


—


—


—


—


—


—


2,886


3.3

Mortgage-backed commercial

723


3.8


—


—


—


—


36


4.0


687


3.8

Asset-backed

668


3.5


—


—


390


3.4


165


4.0


113


3.3

Corporate debt

1,294


3.2


152


3.1


512


2.9


606


3.4


24


5.9

Total available-for-sale securities

$
27,630


3.3


$
273


2.7


$
2,344


2.2


$
1,800


2.8


$
23,213


3.4

Amortized cost of available-for-sale securities

$
27,789




$
273




$
2,376




$
1,814




$
23,326



Amortized cost of held-to-maturity securities
 


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Agency mortgage-backed residential
 
$
2,351

 
3.2
%
 
$
—

 
—
%
 
$
—

 
—
%
 
$
—

 
—
%
 
$
2,351

 
3.2
%
Asset-backed retained notes
 
36

 
2.1

 
—

 
—

 
36

 
2.1

 
—

 
—

 
—

 
—

Total held-to-maturity securities
 
$
2,387

 
3.2

 
$
—

 
—

 
$
36

 
2.1

 
$
—

 
—

 
$
2,351

 
3.2

December 31, 2018




















Fair value of available-for-sale securities (a)




















U.S. Treasury and federal agencies

$
1,851


1.9
%

$
12


1.0
%

$
1,277


1.8
%

$
562


2.0
%

$
—


—
%
U.S. States and political subdivisions

802


3.0


49


1.9


43


2.3


252


2.6


458


3.4

Foreign government

145


2.4


18


3.1


60


2.3


67


2.4


—


—

Agency mortgage-backed residential
 
17,138

 
3.3

 
—

 
—

 
—

 
—

 
54

 
1.9

 
17,084

 
3.3

Agency mortgage-backed commercial
 
3

 
3.1

 
—

 
—

 
3

 
3.1

 
—

 
—

 
—

 
—

Mortgage-backed residential

2,686


3.3


—


—


—


—


—


—


2,686


3.3

Mortgage-backed commercial

714


3.8


—


—


—


—


46


3.9


668


3.8

Asset-backed

723


3.5


—


—


478


3.4


121


4.0


124


3.3

Corporate debt

1,241


3.1


144


2.8


496


2.9


581


3.3


20


5.5

Total available-for-sale securities

$
25,303


3.2


$
223


2.6


$
2,357


2.4


$
1,683


2.8


$
21,040


3.3

Amortized cost of available-for-sale securities

$
25,881





$
224





$
2,405





$
1,743





$
21,509




Amortized cost of held-to-maturity securities

 






















Agency mortgage-backed residential
 
$
2,319

 
3.2
%
 
$
—

 
—
%
 
$
—

 
—
%
 
$
—

 
—
%
 
$
2,319

 
3.2
%
Asset-backed retained notes
 
43

 
2.0

 
—

 
—

 
42

 
2.0

 
1

 
3.3

 
—

 
—

Total held-to-maturity securities
 
$
2,362

 
3.2

 
$
—

 
—

 
$
42

 
2.0

 
$
1

 
3.3

 
$
2,319

 
3.2

(a)
Yield is calculated using the effective yield of each security at the end of the period, weighted based on the market value. The effective yield considers the contractual coupon and amortized cost, and excludes expected capital gains and losses.
Investment Income
The following table presents interest and dividends on investment securities.
 
Three months ended March 31,
($ in millions)
2019
 
2018
Taxable interest
$
214

 
$
154

Taxable dividends
3

 
3

Interest and dividends exempt from U.S. federal income tax
5

 
6

Interest and dividends on investment securities
$
222

 
$
163
Schedule of Realized Gain (Loss)
The following table presents gross gains and losses realized upon the sales of available-for-sale securities, and net gains or losses on equity securities held during the period. There were no other-than-temporary impairments of available-for-sale securities for the periods presented.
 
Three months ended March 31,
($ in millions)
2019
 
2018
Available-for-sale securities
 
 
 
Gross realized gains
$
10

 
$
6

Gross realized losses (a)
(1
)
 
—

Net realized gains on available-for-sale securities
9

 
6

Net realized gain on equity securities
29

 
22

Net unrealized gain (loss) on equity securities
70

 
(40
)
Other gain (loss) on investments, net
$
108

 
$
(12
)

(a)
Certain available-for-sale securities were sold at a loss during the three months ended March 31, 2019, as a result of market conditions within these periods (e.g., a downgrade in the rating of a debt security) or based on corporate actions outside of our control (such as a call by the issuer). Any such sales were made in accordance with our risk-management policies and practices.
Schedule of Unrealized Loss on Investments
The table below summarizes available-for-sale and held-to-maturity securities in an unrealized loss position, which we evaluated for other than temporary impairment. For additional information on our methodology, refer to Note 1 to the Consolidated Financial Statements in our 2018 Annual Report on Form 10-K. As of March 31, 2019, we did not have the intent to sell the available-for-sale or held-to-maturity securities with an unrealized loss position and we do not believe it is more likely than not that we will be required to sell these securities before recovery of their amortized cost basis. As a result of this evaluation, we believe that the securities with an unrealized loss position are not considered to be other-than-temporarily impaired at March 31, 2019.
 
 
March 31, 2019
 
December 31, 2018


Less than 12 months

12 months or longer

Less than 12 months

12 months or longer
($ in millions)

Fair value

Unrealized loss

Fair value

Unrealized loss

Fair value

Unrealized loss

Fair value

Unrealized loss
Available-for-sale securities
















Debt securities
















U.S. Treasury and federal agencies

$
42


$
—


$
1,749


$
(49
)

$
31


$
—


$
1,758


$
(60
)
U.S. States and political subdivisions

23


—


189


(3
)

259


(3
)

317


(14
)
Foreign government

4


—


22


—


6


—


74


(1
)
Agency mortgage-backed residential
 
510

 
(1
)
 
11,145

 
(192
)
 
5,537

 
(94
)
 
7,808

 
(301
)
Agency mortgage-backed commercial
 
30

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Mortgage-backed residential

131


—


1,676


(33
)

1,024


(20
)

1,360


(91
)
Mortgage-backed commercial
 
517

 
(2
)
 
41

 
—

 
347

 
(1
)
 
36

 
(1
)
Asset-backed

6


—


214


(1
)

294


(1
)

124


(1
)
Corporate debt

105


—


764


(14
)

576


(19
)

569


(27
)
Total temporarily impaired available-for-sale securities

$
1,368


$
(3
)

$
15,800


$
(292
)

$
8,074


$
(138
)

$
12,046


$
(496
)
Held-to-maturity securities
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Debt securities
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Agency mortgage-backed residential
 
$
86

 
$
—

 
$
1,376

 
$
(28
)
 
$
457

 
$
(6
)
 
$
1,376

 
$
(55
)
Asset-backed retained notes
 
—

 
—

 
16

 
—

 
16

 
—

 
19

 
—

Total held-to-maturity debt securities
 
$
86


$
—


$
1,392


$
(28
)

$
473


$
(6
)

$
1,395


$
(55
)