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SECURITIES - Schedule of Investments in Continuous Loss Positions (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Fair Value |  |
Less than 12 Months | $ 3,044 | $ 17,574
12 Months or Longer | 20,505 | 5,634
Total | 23,549 | 23,208
Gross Unrealized Losses |  |
Less than 12 Months | (24) | (1,363)
12 Months or Longer | (1,999) | (1,099)
Total | (2,023) | (2,462)
U.S. Treasury and other |  |
Fair Value |  |
Less than 12 Months | 49 | 3,356
12 Months or Longer | 3,245 | 0
Total | 3,294 | 3,356
Gross Unrealized Losses |  |
Less than 12 Months | 0 | (193)
12 Months or Longer | (139) | 0
Total | (139) | (193)
Total mortgage-backed securities |  |
Fair Value |  |
Less than 12 Months | 2,939 | 13,433
12 Months or Longer | 16,653 | 5,213
Total | 19,592 | 18,646
Gross Unrealized Losses |  |
Less than 12 Months | (24) | (1,144)
12 Months or Longer | (1,857) | (1,083)
Total | (1,881) | (2,227)
Federal agencies and U.S. government sponsored entities |  |
Fair Value |  |
Less than 12 Months | 2,939 | 13,353
12 Months or Longer | 16,398 | 5,042
Total | 19,337 | 18,395
Gross Unrealized Losses |  |
Less than 12 Months | (24) | (1,136)
12 Months or Longer | (1,833) | (1,062)
Total | (1,857) | (2,198)
Other/non-agency |  |
Fair Value |  |
Less than 12 Months | 0 | 80
12 Months or Longer | 255 | 171
Total | 255 | 251
Gross Unrealized Losses |  |
Less than 12 Months | 0 | (8)
12 Months or Longer | (24) | (21)
Total | (24) | (29)
Collateralized loan obligations |  |
Fair Value |  |
Less than 12 Months | 56 | 785
12 Months or Longer | 607 | 421
Total | 663 | 1,206
Gross Unrealized Losses |  |
Less than 12 Months | 0 | (26)
12 Months or Longer | (3) | (16)
Total | $ (3) | $ (42)

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