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INVESTMENT SECURITIES (Tables)
3 Months Ended
Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]  
Schedule of Investment Securities

March 31, 2020

December 31, 2019
(In millions)
Amortized
cost

Gross
unrealized
gains

Gross
unrealized
losses

Estimated
fair value


Amortized
cost

Gross
unrealized
gains

Gross
unrealized
losses

Estimated
fair value











Debt









U.S. corporate
$
23,167

$
3,795

$
(493
)
$
26,470


$
23,037

$
4,636

$
(11
)
$
27,661

Non-U.S. corporate
2,155

150

(60
)
2,246


2,161

260

(1
)
2,420

State and municipal
3,090

638

(21
)
3,708


3,086

598

(15
)
3,669

Mortgage and asset-backed
3,296

51

(143
)
3,205


3,117

116

(4
)
3,229

Government and agencies
1,269

157


1,427


1,391

126


1,516

Equity
5,245



5,245


10,025



10,025

Total
$
38,223

$
4,792

$
(716
)
$
42,299


$
42,816

$
5,736

$
(31
)
$
48,521


Contractual Maturities of Investment in Available-for-Sale Debt Securities (Excluding Mortgage and Asset-Backed Securities)
Contractual maturities of investments in debt securities (excluding mortgage and asset-backed securities) at March 31, 2020 are as follows:
(In millions)
Amortized
cost

Estimated
fair value

 
 
 
Due
 
 
Within one year
$
610

$
621

After one year through five years
2,328

2,400

After five years through ten years
6,616

7,226

After ten years
20,128

23,603