Allowance for Credit Losses - Loan Portfolio Stratified by Key Credit Quality Indicators (Details) - USD ($)
$ in Thousands |
3 Months Ended |
9 Months Ended |
12 Months Ended |
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
Dec. 31, 2023 |
| % of Balance |
|
|
|
|
|
| Current period gross charge-offs, total |
$ (87,868)
|
$ (105,137)
|
$ (273,033)
|
$ (315,353)
|
|
| Current period recoveries, total |
11,149
|
9,693
|
33,840
|
33,385
|
|
| Current period net charge-offs, total |
(76,719)
|
$ (95,444)
|
(239,193)
|
$ (281,968)
|
|
| Consumer Portfolio Segment | Student Loan |
|
|
|
|
|
| % of Balance |
|
|
|
|
|
| Current period gross charge-offs, Year 1 |
|
|
(672)
|
|
$ (1,812)
|
| Current period gross charge-offs, Year 2 |
|
|
(16,359)
|
|
(31,032)
|
| Current period gross charge-offs, Year 3 |
|
|
(48,389)
|
|
(70,331)
|
| Current period gross charge-offs, Year 4 |
|
|
(38,496)
|
|
(49,624)
|
| Current period gross charge-offs, Year 5 |
|
|
(27,088)
|
|
(50,585)
|
| Current period gross charge-offs, After Year 5 |
|
|
(141,649)
|
|
(216,711)
|
| Current period gross charge-offs, total |
|
|
(272,653)
|
|
(420,095)
|
| Current period recoveries, Year 1 |
|
|
37
|
|
172
|
| Current period recoveries, Year 2 |
|
|
1,268
|
|
2,342
|
| Current period recoveries, Year 3 |
|
|
4,876
|
|
6,496
|
| Current period recoveries, Year 4 |
|
|
4,317
|
|
4,923
|
| Current period recoveries, Year 5 |
|
|
2,886
|
|
5,260
|
| Current period recoveries, After Year 5 |
|
|
20,456
|
|
27,175
|
| Current period recoveries, total |
|
|
33,840
|
|
46,368
|
| Current period net charge-offs, Year 1 |
|
|
(635)
|
|
(1,640)
|
| Current period net charge-offs, Year 2 |
|
|
(15,091)
|
|
(28,690)
|
| Current period recoveries, Year 3 |
|
|
(43,513)
|
|
(63,835)
|
| Current period recoveries, Year 4 |
|
|
(34,179)
|
|
(44,701)
|
| Current period recoveries, Year 5 |
|
|
(24,202)
|
|
(45,325)
|
| Current period recoveries, After Year 5 |
|
|
(121,193)
|
|
(189,536)
|
| Current period net charge-offs, total |
|
|
(238,813)
|
|
(373,727)
|
| Total accrued interest by origination vintage, Year 1 |
104,376
|
|
104,376
|
|
177,959
|
| Total accrued interest by origination vintage, Year 2 |
452,478
|
|
452,478
|
|
408,800
|
| Total accrued interest by origination vintage, Year 3 |
350,208
|
|
350,208
|
|
269,978
|
| Total accrued interest by origination vintage, Year 4 |
226,175
|
|
226,175
|
|
152,094
|
| Total accrued interest by origination vintage, Year 5 |
126,965
|
|
126,965
|
|
116,618
|
| Total accrued interest by origination vintage, After Year 5 |
269,612
|
|
269,612
|
|
229,116
|
| Total accrued interest by origination vintage |
1,529,814
|
|
1,529,814
|
|
1,354,565
|
| Consumer Portfolio Segment | Student Loan | With and without cosigners |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
4,145,008
|
|
4,145,008
|
|
4,490,119
|
| Year 2 |
5,363,248
|
|
5,363,248
|
|
5,088,739
|
| Year 3 |
3,229,776
|
|
3,229,776
|
|
2,937,422
|
| Year 4 |
2,113,786
|
|
2,113,786
|
|
1,819,089
|
| Year 5 |
1,419,153
|
|
1,419,153
|
|
1,632,300
|
| After Year 5 |
5,506,495
|
|
5,506,495
|
|
5,058,175
|
| Loan type |
$ 21,777,466
|
|
$ 21,777,466
|
|
$ 21,025,844
|
| % of Balance |
|
|
|
|
|
| Total in percent |
100.00%
|
|
100.00%
|
|
100.00%
|
| Consumer Portfolio Segment | Student Loan | With cosigner |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 3,734,881
|
|
$ 3,734,881
|
|
$ 3,903,676
|
| Year 2 |
4,740,192
|
|
4,740,192
|
|
4,428,163
|
| Year 3 |
2,775,372
|
|
2,775,372
|
|
2,516,380
|
| Year 4 |
1,792,296
|
|
1,792,296
|
|
1,535,308
|
| Year 5 |
1,185,946
|
|
1,185,946
|
|
1,378,699
|
| After Year 5 |
4,854,732
|
|
4,854,732
|
|
4,529,768
|
| Loan type |
$ 19,083,419
|
|
$ 19,083,419
|
|
$ 18,291,994
|
| % of Balance |
|
|
|
|
|
| Private education loans |
88.00%
|
|
88.00%
|
|
87.00%
|
| Consumer Portfolio Segment | Student Loan | Without cosigner |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 410,127
|
|
$ 410,127
|
|
$ 586,443
|
| Year 2 |
623,056
|
|
623,056
|
|
660,576
|
| Year 3 |
454,404
|
|
454,404
|
|
421,042
|
| Year 4 |
321,490
|
|
321,490
|
|
283,781
|
| Year 5 |
233,207
|
|
233,207
|
|
253,601
|
| After Year 5 |
651,763
|
|
651,763
|
|
528,407
|
| Loan type |
$ 2,694,047
|
|
$ 2,694,047
|
|
$ 2,733,850
|
| % of Balance |
|
|
|
|
|
| Private education loans |
12.00%
|
|
12.00%
|
|
13.00%
|
| Consumer Portfolio Segment | Student Loan | FICO at Origination |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 4,145,008
|
|
$ 4,145,008
|
|
$ 4,490,119
|
| Year 2 |
5,363,248
|
|
5,363,248
|
|
5,088,739
|
| Year 3 |
3,229,776
|
|
3,229,776
|
|
2,937,422
|
| Year 4 |
2,113,786
|
|
2,113,786
|
|
1,819,089
|
| Year 5 |
1,419,153
|
|
1,419,153
|
|
1,632,300
|
| After Year 5 |
5,506,495
|
|
5,506,495
|
|
5,058,175
|
| Loan type |
$ 21,777,466
|
|
$ 21,777,466
|
|
$ 21,025,844
|
| % of Balance |
|
|
|
|
|
| Total in percent |
100.00%
|
|
100.00%
|
|
100.00%
|
| Consumer Portfolio Segment | Student Loan | FICO at Origination | Less than 670 |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 246,464
|
|
$ 246,464
|
|
$ 328,199
|
| Year 2 |
394,068
|
|
394,068
|
|
395,526
|
| Year 3 |
261,780
|
|
261,780
|
|
208,696
|
| Year 4 |
156,049
|
|
156,049
|
|
118,935
|
| Year 5 |
96,605
|
|
96,605
|
|
137,494
|
| After Year 5 |
495,359
|
|
495,359
|
|
451,613
|
| Loan type |
$ 1,650,325
|
|
$ 1,650,325
|
|
$ 1,640,463
|
| % of Balance |
|
|
|
|
|
| Private education loans at origination |
8.00%
|
|
8.00%
|
|
8.00%
|
| Consumer Portfolio Segment | Student Loan | FICO at Origination | 670-699 |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 509,488
|
|
$ 509,488
|
|
$ 635,642
|
| Year 2 |
751,734
|
|
751,734
|
|
704,642
|
| Year 3 |
450,549
|
|
450,549
|
|
400,744
|
| Year 4 |
288,455
|
|
288,455
|
|
254,762
|
| Year 5 |
201,741
|
|
201,741
|
|
257,840
|
| After Year 5 |
937,664
|
|
937,664
|
|
868,777
|
| Loan type |
$ 3,139,631
|
|
$ 3,139,631
|
|
$ 3,122,407
|
| % of Balance |
|
|
|
|
|
| Private education loans at origination |
14.00%
|
|
14.00%
|
|
15.00%
|
| Consumer Portfolio Segment | Student Loan | FICO at Origination | 700-749 |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 1,256,692
|
|
$ 1,256,692
|
|
$ 1,383,779
|
| Year 2 |
1,649,606
|
|
1,649,606
|
|
1,586,783
|
| Year 3 |
1,010,936
|
|
1,010,936
|
|
934,033
|
| Year 4 |
673,104
|
|
673,104
|
|
590,401
|
| Year 5 |
463,935
|
|
463,935
|
|
545,333
|
| After Year 5 |
1,861,249
|
|
1,861,249
|
|
1,709,299
|
| Loan type |
$ 6,915,522
|
|
$ 6,915,522
|
|
$ 6,749,628
|
| % of Balance |
|
|
|
|
|
| Private education loans at origination |
32.00%
|
|
32.00%
|
|
32.00%
|
| Consumer Portfolio Segment | Student Loan | FICO at Origination | Greater than or equal to 750 |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 2,132,364
|
|
$ 2,132,364
|
|
$ 2,142,499
|
| Year 2 |
2,567,840
|
|
2,567,840
|
|
2,401,788
|
| Year 3 |
1,506,511
|
|
1,506,511
|
|
1,393,949
|
| Year 4 |
996,178
|
|
996,178
|
|
854,991
|
| Year 5 |
656,872
|
|
656,872
|
|
691,633
|
| After Year 5 |
2,212,223
|
|
2,212,223
|
|
2,028,486
|
| Loan type |
$ 10,071,988
|
|
$ 10,071,988
|
|
$ 9,513,346
|
| % of Balance |
|
|
|
|
|
| Private education loans at origination |
46.00%
|
|
46.00%
|
|
45.00%
|
| Consumer Portfolio Segment | Student Loan | FICO Refreshed |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 4,145,008
|
|
$ 4,145,008
|
|
$ 4,490,119
|
| Year 2 |
5,363,248
|
|
5,363,248
|
|
5,088,739
|
| Year 3 |
3,229,776
|
|
3,229,776
|
|
2,937,422
|
| Year 4 |
2,113,786
|
|
2,113,786
|
|
1,819,089
|
| Year 5 |
1,419,153
|
|
1,419,153
|
|
1,632,300
|
| After Year 5 |
5,506,495
|
|
5,506,495
|
|
5,058,175
|
| Loan type |
$ 21,777,466
|
|
$ 21,777,466
|
|
$ 21,025,844
|
| % of Balance |
|
|
|
|
|
| Total in percent |
100.00%
|
|
100.00%
|
|
100.00%
|
| Consumer Portfolio Segment | Student Loan | FICO Refreshed | Less than 670 |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 350,534
|
|
$ 350,534
|
|
$ 495,451
|
| Year 2 |
634,599
|
|
634,599
|
|
638,381
|
| Year 3 |
460,995
|
|
460,995
|
|
379,738
|
| Year 4 |
304,198
|
|
304,198
|
|
217,956
|
| Year 5 |
195,926
|
|
195,926
|
|
214,665
|
| After Year 5 |
866,117
|
|
866,117
|
|
791,875
|
| Loan type |
$ 2,812,369
|
|
$ 2,812,369
|
|
$ 2,738,066
|
| % of Balance |
|
|
|
|
|
| Private education loans at origination |
13.00%
|
|
13.00%
|
|
13.00%
|
| Consumer Portfolio Segment | Student Loan | FICO Refreshed | 670-699 |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 530,612
|
|
$ 530,612
|
|
$ 616,684
|
| Year 2 |
722,522
|
|
722,522
|
|
672,777
|
| Year 3 |
411,258
|
|
411,258
|
|
365,674
|
| Year 4 |
247,461
|
|
247,461
|
|
193,462
|
| Year 5 |
142,707
|
|
142,707
|
|
176,963
|
| After Year 5 |
599,235
|
|
599,235
|
|
564,245
|
| Loan type |
$ 2,653,795
|
|
$ 2,653,795
|
|
$ 2,589,805
|
| % of Balance |
|
|
|
|
|
| Private education loans at origination |
12.00%
|
|
12.00%
|
|
12.00%
|
| Consumer Portfolio Segment | Student Loan | FICO Refreshed | 700-749 |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 1,240,651
|
|
$ 1,240,651
|
|
$ 1,347,094
|
| Year 2 |
1,541,321
|
|
1,541,321
|
|
1,477,310
|
| Year 3 |
904,821
|
|
904,821
|
|
836,747
|
| Year 4 |
581,250
|
|
581,250
|
|
498,414
|
| Year 5 |
371,047
|
|
371,047
|
|
445,244
|
| After Year 5 |
1,464,960
|
|
1,464,960
|
|
1,361,073
|
| Loan type |
$ 6,104,050
|
|
$ 6,104,050
|
|
$ 5,965,882
|
| % of Balance |
|
|
|
|
|
| Private education loans at origination |
28.00%
|
|
28.00%
|
|
28.00%
|
| Consumer Portfolio Segment | Student Loan | FICO Refreshed | Greater than or equal to 750 |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 2,023,211
|
|
$ 2,023,211
|
|
$ 2,030,890
|
| Year 2 |
2,464,806
|
|
2,464,806
|
|
2,300,271
|
| Year 3 |
1,452,702
|
|
1,452,702
|
|
1,355,263
|
| Year 4 |
980,877
|
|
980,877
|
|
909,257
|
| Year 5 |
709,473
|
|
709,473
|
|
795,428
|
| After Year 5 |
2,576,183
|
|
2,576,183
|
|
2,340,982
|
| Loan type |
$ 10,207,252
|
|
$ 10,207,252
|
|
$ 9,732,091
|
| % of Balance |
|
|
|
|
|
| Private education loans at origination |
47.00%
|
|
47.00%
|
|
47.00%
|
| Consumer Portfolio Segment | Student Loan | Seasoning |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 4,145,008
|
|
$ 4,145,008
|
|
$ 4,490,119
|
| Year 2 |
5,363,248
|
|
5,363,248
|
|
5,088,739
|
| Year 3 |
3,229,776
|
|
3,229,776
|
|
2,937,422
|
| Year 4 |
2,113,786
|
|
2,113,786
|
|
1,819,089
|
| Year 5 |
1,419,153
|
|
1,419,153
|
|
1,632,300
|
| After Year 5 |
5,506,495
|
|
5,506,495
|
|
5,058,175
|
| Loan type |
$ 21,777,466
|
|
$ 21,777,466
|
|
$ 21,025,844
|
| % of Balance |
|
|
|
|
|
| Total in percent |
100.00%
|
|
100.00%
|
|
100.00%
|
| Consumer Portfolio Segment | Student Loan | Seasoning | 1-12 payments |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 2,276,316
|
|
$ 2,276,316
|
|
$ 2,514,079
|
| Year 2 |
2,140,723
|
|
2,140,723
|
|
740,450
|
| Year 3 |
420,171
|
|
420,171
|
|
440,293
|
| Year 4 |
247,167
|
|
247,167
|
|
245,631
|
| Year 5 |
149,269
|
|
149,269
|
|
208,941
|
| After Year 5 |
353,135
|
|
353,135
|
|
332,608
|
| Loan type |
$ 5,586,781
|
|
$ 5,586,781
|
|
$ 4,482,002
|
| % of Balance |
|
|
|
|
|
| Seasoning based on monthly scheduled payments due from 1-12 payments |
25.00%
|
|
25.00%
|
|
21.00%
|
| Consumer Portfolio Segment | Student Loan | Seasoning | 13-24 payments |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 0
|
|
$ 0
|
|
$ 0
|
| Year 2 |
1,056,273
|
|
1,056,273
|
|
2,675,956
|
| Year 3 |
1,277,280
|
|
1,277,280
|
|
303,045
|
| Year 4 |
192,430
|
|
192,430
|
|
167,532
|
| Year 5 |
127,669
|
|
127,669
|
|
165,577
|
| After Year 5 |
374,514
|
|
374,514
|
|
384,760
|
| Loan type |
$ 3,028,166
|
|
$ 3,028,166
|
|
$ 3,696,870
|
| % of Balance |
|
|
|
|
|
| Seasoning based on monthly scheduled payments due from 13 - 24 payments |
14.00%
|
|
14.00%
|
|
18.00%
|
| Consumer Portfolio Segment | Student Loan | Seasoning | 25-36 payments |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 0
|
|
$ 0
|
|
$ 0
|
| Year 2 |
0
|
|
0
|
|
0
|
| Year 3 |
619,637
|
|
619,637
|
|
1,524,834
|
| Year 4 |
855,419
|
|
855,419
|
|
195,091
|
| Year 5 |
116,659
|
|
116,659
|
|
129,571
|
| After Year 5 |
484,079
|
|
484,079
|
|
456,448
|
| Loan type |
$ 2,075,794
|
|
$ 2,075,794
|
|
$ 2,305,944
|
| % of Balance |
|
|
|
|
|
| Seasoning based on monthly scheduled payments due from 25 - 36 payments |
10.00%
|
|
10.00%
|
|
11.00%
|
| Consumer Portfolio Segment | Student Loan | Seasoning | 37-48 payments |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 0
|
|
$ 0
|
|
$ 0
|
| Year 2 |
0
|
|
0
|
|
0
|
| Year 3 |
0
|
|
0
|
|
0
|
| Year 4 |
380,010
|
|
380,010
|
|
902,938
|
| Year 5 |
524,320
|
|
524,320
|
|
208,521
|
| After Year 5 |
453,928
|
|
453,928
|
|
446,350
|
| Loan type |
$ 1,358,258
|
|
$ 1,358,258
|
|
$ 1,557,809
|
| % of Balance |
|
|
|
|
|
| Seasoning based on monthly scheduled payments due from 37 - 48 payments |
6.00%
|
|
6.00%
|
|
7.00%
|
| Consumer Portfolio Segment | Student Loan | Seasoning | More than 48 payments |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 0
|
|
$ 0
|
|
$ 0
|
| Year 2 |
0
|
|
0
|
|
0
|
| Year 3 |
0
|
|
0
|
|
0
|
| Year 4 |
0
|
|
0
|
|
116
|
| Year 5 |
276,001
|
|
276,001
|
|
706,097
|
| After Year 5 |
3,336,669
|
|
3,336,669
|
|
2,985,015
|
| Loan type |
$ 3,612,670
|
|
$ 3,612,670
|
|
$ 3,691,228
|
| % of Balance |
|
|
|
|
|
| Seasoning based on monthly scheduled payments due from more than 48 payments |
17.00%
|
|
17.00%
|
|
18.00%
|
| Consumer Portfolio Segment | Student Loan | Seasoning | Not yet in repayment |
|
|
|
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
|
|
| Year 1 |
$ 1,868,692
|
|
$ 1,868,692
|
|
$ 1,976,040
|
| Year 2 |
2,166,252
|
|
2,166,252
|
|
1,672,333
|
| Year 3 |
912,688
|
|
912,688
|
|
669,250
|
| Year 4 |
438,760
|
|
438,760
|
|
307,781
|
| Year 5 |
225,235
|
|
225,235
|
|
213,593
|
| After Year 5 |
504,170
|
|
504,170
|
|
452,994
|
| Loan type |
$ 6,115,797
|
|
$ 6,115,797
|
|
$ 5,291,991
|
| % of Balance |
|
|
|
|
|
| Seasoning based on monthly scheduled payments due from not yet in repayment |
28.00%
|
|
28.00%
|
|
25.00%
|