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v3.23.1

Investment Securities - Securities in Gross Unrealized Loss Position (Details) $ in Millions | Mar. 31, 2023 USD ($) security | Dec. 31, 2022 USD ($) security
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value - Less than 12 Months | $ 13,407 | $ 30,629
Fair Value - 12 Months or Longer | 57,627 | 40,544
Fair Value - Total | 71,034 | 71,173
Gross Unrealized Loss - Less than 12 Months | (329) | (2,141)
Gross Unrealized Loss - 12 Months or Longer | (8,748) | (8,133)
Gross Unrealized Loss - Total | $ (9,077) | $ (10,274)
Number of securities in gross unrealized loss positions | security | 2,760 | 2,840
U.S. Treasury securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value - Less than 12 Months | $ 1,059 | $ 2,464
Fair Value - 12 Months or Longer | 1,155 | 448
Fair Value - Total | 2,214 | 2,912
Gross Unrealized Loss - Less than 12 Months | (20) | (57)
Gross Unrealized Loss - 12 Months or Longer | (50) | (33)
Gross Unrealized Loss - Total | (70) | (90)
RMBS, Agency |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value - Less than 12 Months | 9,925 | 23,271
Fair Value - 12 Months or Longer | 50,456 | 36,803
Fair Value - Total | 60,381 | 60,074
Gross Unrealized Loss - Less than 12 Months | (267) | (1,809)
Gross Unrealized Loss - 12 Months or Longer | (8,071) | (7,604)
Gross Unrealized Loss - Total | (8,338) | (9,413)
RMBS, Non-agency |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value - Less than 12 Months | 8 | 14
Fair Value - 12 Months or Longer | 9 | 3
Fair Value - Total | 17 | 17
Gross Unrealized Loss - Less than 12 Months | 0 | (1)
Gross Unrealized Loss - 12 Months or Longer | (1) | 0
Gross Unrealized Loss - Total | (1) | (1)
RMBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value - Less than 12 Months | 9,933 | 23,285
Fair Value - 12 Months or Longer | 50,465 | 36,806
Fair Value - Total | 60,398 | 60,091
Gross Unrealized Loss - Less than 12 Months | (267) | (1,810)
Gross Unrealized Loss - 12 Months or Longer | (8,072) | (7,604)
Gross Unrealized Loss - Total | (8,339) | (9,414)
CMBS, Agency |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value - Less than 12 Months | 1,884 | 4,325
Fair Value - 12 Months or Longer | 5,633 | 3,214
Fair Value - Total | 7,517 | 7,539
Gross Unrealized Loss - Less than 12 Months | (42) | (267)
Gross Unrealized Loss - 12 Months or Longer | (619) | (493)
Gross Unrealized Loss - Total | (661) | (760)
Other securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value - Less than 12 Months | 531 | 555
Fair Value - 12 Months or Longer | 374 | 76
Fair Value - Total | 905 | 631
Gross Unrealized Loss - Less than 12 Months | 0 | (7)
Gross Unrealized Loss - 12 Months or Longer | (7) | (3)
Gross Unrealized Loss - Total | $ (7) | $ (10)

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