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Debt securities available-for-sale (Tables)
 12 Months Ended
Dec. 31, 2023
Investments [Abstract]  
Debt Securities, Available-For-Sale
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
At December 31, 2023
Gross
Gross
Weighted
Amortized
unrealized
unrealized
Fair
 
average
(In thousands)
cost
gains
 
losses
value
yield
U.S. Treasury securities
Within 1 year
$
7,103,518
$
526
$
59,415
$
7,044,629
3.51
%
After 1 to 5 years
3,598,209
84
170,209
3,428,084
1.35
After 5 to 10 years
307,512
-
33,164
274,348
1.63
Total U.S. Treasury
 
securities
11,009,239
610
262,788
10,747,061
2.75
Collateralized mortgage obligations - federal agencies
After 1 to 5 years
17,899
-
838
17,061
1.55
After 5 to 10 years
20,503
2
1,321
19,184
2.28
After 10 years
108,280
29
9,868
98,441
2.54
Total collateralized
 
mortgage obligations - federal agencies
146,682
31
12,027
134,686
2.38
Mortgage-backed securities
Within 1 year
637
-
3
634
3.72
After 1 to 5 years
82,310
11
3,536
78,785
2.34
After 5 to 10 years
792,431
75
48,250
744,256
2.28
After 10 years
6,067,353
667
1,046,909
5,021,111
1.64
Total mortgage-backed
 
securities
 
6,942,731
753
1,098,698
5,844,786
1.72
Other
Within 1 year
1,011
-
-
1,011
4.00
After 1 to 5 years
1,500
-
-
1,500
8.50
Total other
 
2,511
-
-
2,511
6.69
Total debt securities
 
available-for-sale
[1]
$
18,101,163
$
1,394
$
1,373,513
$
16,729,044
2.35
%
[1]
 
Includes $
12
 
billion pledged to secure government and trust deposits,
 
assets sold under agreements to repurchase, credit facilities
 
and loan
servicing agreements that the secured parties are not permitted
 
to sell or repledge the collateral, of which $
11.1
 
billion serve as collateral for
public funds.
 
The Corporation had unpledged Available
 
for Sale securities with a fair value of
 
$
4.6
 
billion that could be used to increase its
borrowing facilities.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
At December 31, 2022
Gross
 
Gross
 
Weighted
 
Amortized
 
unrealized
unrealized
Fair
 
average
 
(In thousands)
cost
gains
 
losses
value
yield
U.S. Treasury securities
 
Within 1 year
$
4,576,127
$
506
$
47,156
$
4,529,477
2.42
%
After 1 to 5 years
6,793,739
-
410,858
6,382,881
1.35
After 5 to 10 years
308,854
-
40,264
268,590
1.63
Total U.S. Treasury
 
securities
11,678,720
506
498,278
11,180,948
1.78
Collateralized mortgage obligations - federal agencies
After 1 to 5 years
3,914
-
213
3,701
1.77
After 5 to 10 years
47,979
-
3,428
44,551
1.73
After 10 years
127,639
24
10,719
116,944
2.53
Total collateralized
 
mortgage obligations - federal agencies
179,532
24
14,360
165,196
2.30
Mortgage-backed securities
After 1 to 5 years
74,328
11
3,428
70,911
2.33
After 5 to 10 years
866,757
43
58,997
807,803
2.16
After 10 years
6,762,150
932
1,184,626
5,578,456
1.61
Total mortgage-backed
 
securities
 
7,703,235
986
1,247,051
6,457,170
1.68
Other
After 1 to 5 years
1,062
-
2
1,060
3.98
Total other
 
1,062
-
2
1,060
3.98
Total debt securities
 
available-for-sale
[1]
$
19,562,549
$
1,516
$
1,759,691
$
17,804,374
1.75
%
[1]
Includes $
11.3
 
billion pledged to secure government and trust deposits,
 
assets sold under agreements to repurchase, credit facilities
 
and loan
servicing agreements that the secured parties are not permitted
 
to sell or repledge the collateral, of which $
10.3
 
billion serve as collateral for
public funds. The Corporation had unpledged Available
 
for Sale securities with a fair value of
 
$
6.4
 
billion that could be used to increase its
borrowing facilities.
Schedule Of Aggregate Amortized Cost And Fair Value Of Afs By Contractual Maturity
 
 
 
 
 
 
 
 
 
 
 
(In thousands)
Amortized cost
 
Fair value
Within 1 year
$
7,105,166
$
7,046,274
After 1 to 5 years
3,699,918
3,525,430
After 5 to 10 years
1,120,446
1,037,788
After 10 years
6,175,633
5,119,552
Total debt securities
 
available-for-sale
$
18,101,163
$
16,729,044
Schedule Of Realized Gain Loss
 
 
 
 
 
 
 
 
 
 
(In thousands)
2023
2022
2021
Gross realized gains
$
-
$
-
$
695
Gross realized losses
-
-
(672)
Net realized gains (losses) on sale of debt securities available
 
-for-sale
$
-
$
-
$
23
Debt Securities Available For Sale Unrealized Loss Position Fair Value
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
At December 31, 2023
Less than 12 months
12 months or more
Total
Gross
Gross
Gross
Fair
 
 
unrealized
Fair
 
 
unrealized
Fair
 
 
unrealized
(In thousands)
value
 
losses
value
 
losses
value
 
losses
U.S. Treasury securities
$
244,925
$
5,126
$
6,550,941
$
257,662
$
6,795,866
$
262,788
Collateralized mortgage obligations - federal agencies
 
5,234
35
124,930
11,992
130,164
12,027
Mortgage-backed securities
37,118
405
5,779,260
1,098,293
5,816,378
1,098,698
Total debt securities
 
available-for-sale in an unrealized loss position
 
$
287,277
$
5,566
$
12,455,131
$
1,367,947
$
12,742,408
$
1,373,513
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
At December 31, 2022
Less than 12 months
12 months or more
Total
Gross
Gross
Gross
Fair
 
 
unrealized
Fair
 
 
unrealized
Fair
 
 
unrealized
(In thousands)
value
 
losses
value
 
losses
value
 
losses
U.S. Treasury securities
$
6,027,786
$
288,582
$
3,244,572
$
209,696
$
9,272,358
$
498,278
Collateralized mortgage obligations - federal agencies
 
139,845
10,655
22,661
3,705
162,506
14,360
Mortgage-backed securities
1,740,214
138,071
4,662,195
1,108,980
6,402,409
1,247,051
Other
60
2
-
-
60
2
Total debt securities
 
available-for-sale in an unrealized loss position
 
$
7,907,905
$
437,310
$
7,929,428
$
1,322,381
$
15,837,333
$
1,759,691