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SECURITIES - Schedule of Investments in Continuous Loss Positions (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value |  |
Less than 12 Months | $ 6,542 | $ 3,044
12 Months or Longer | 19,486 | 20,505
Total | 26,028 | 23,549
Gross Unrealized Losses |  |
Less than 12 Months | (46) | (24)
12 Months or Longer | (2,307) | (1,999)
Total | (2,353) | (2,023)
Mortgage-backed securities |  |
Fair Value |  |
Less than 12 Months | 5,710 | 2,939
12 Months or Longer | 16,264 | 16,653
Total | 21,974 | 19,592
Gross Unrealized Losses |  |
Less than 12 Months | (39) | (24)
12 Months or Longer | (2,132) | (1,857)
Total | (2,171) | (1,881)
U.S. Treasury and other |  |
Fair Value |  |
Less than 12 Months | 758 | 49
12 Months or Longer | 3,211 | 3,245
Total | 3,969 | 3,294
Gross Unrealized Losses |  |
Less than 12 Months | (7) | 0
12 Months or Longer | (175) | (139)
Total | (182) | (139)
State and political subdivisions |  |
Fair Value |  |
Less than 12 Months | 0 |
12 Months or Longer | 1 |
Total | 1 |
Gross Unrealized Losses |  |
Less than 12 Months | 0 |
12 Months or Longer | 0 |
Total | 0 |
Federal agencies and U.S. government sponsored entities |  |
Fair Value |  |
Less than 12 Months | 5,710 | 2,939
12 Months or Longer | 16,007 | 16,398
Total | 21,717 | 19,337
Gross Unrealized Losses |  |
Less than 12 Months | (39) | (24)
12 Months or Longer | (2,111) | (1,833)
Total | (2,150) | (1,857)
Other/non-agency |  |
Fair Value |  |
Less than 12 Months | 0 | 0
12 Months or Longer | 257 | 255
Total | 257 | 255
Gross Unrealized Losses |  |
Less than 12 Months | 0 | 0
12 Months or Longer | (21) | (24)
Total | (21) | (24)
Collateralized loan obligations |  |
Fair Value |  |
Less than 12 Months | 74 | 56
12 Months or Longer | 10 | 607
Total | 84 | 663
Gross Unrealized Losses |  |
Less than 12 Months | 0 | 0
12 Months or Longer | 0 | (3)
Total | $ 0 | $ (3)

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