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Investment Securities - Summary of Investment Securities (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2023 | Dec. 31, 2022
Debt securities available-for-sale |  |
Debt securities, available-for-sale, amortized cost, total | $ 7,782 |
Debt securities, available-for-sale | 7,782 | $ 9,060
Equity securities: |  |
Equity securities, Fair Value | 14 | 14
Marketable securities amortized cost | 8,712 | 9,933
Marketable securities gross unrealized gain | 12 | 14
Marketable securities gross unrealized loss | 928 | 873
Total securities | 7,796 | 9,074
Interest receivable | 32 | 31
Agency - commercial |  |
Debt securities available-for-sale |  |
Debt securities, available-for-sale, amortized cost, total | 5,488 | 5,242
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | 4 | 7
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 532 | 460
Debt securities, available-for-sale | 4,960 | 4,789
Debt Securities |  |
Debt securities available-for-sale |  |
Debt securities, available-for-sale, amortized cost, total | 3,208 | 4,675
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | 8 | 7
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 394 | 411
Debt securities, available-for-sale | 2,822 | 4,271
Mortgage Backed Securities And Other Securities |  |
Debt securities available-for-sale |  |
Debt securities, available-for-sale, amortized cost, total | 8,696 | 9,917
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | 12 | 14
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 926 | 871
Debt securities, available-for-sale | 7,782 | 9,060
Equity Securities |  |
Equity securities: |  |
Equity securities, Amortized Cost | 16 | 16
Equity securities, Gross Unrealized Loss | 2 | 2
Equity securities, Fair Value | 14 | 14
GSE certificates | Agency - commercial |  |
Debt securities available-for-sale |  |
Debt securities, available-for-sale, amortized cost, total | 1,366 | 1,457
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | 0 | 0
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 162 | 160
Debt securities, available-for-sale | 1,204 | 1,297
GSE CMOs | Agency - commercial |  |
Debt securities available-for-sale |  |
Debt securities, available-for-sale, amortized cost, total | 3,942 | 3,600
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | 0 | 1
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 369 | 300
Debt securities, available-for-sale | 3,573 | 3,301
Private Label CMOs | Agency - commercial |  |
Debt securities available-for-sale |  |
Debt securities, available-for-sale, amortized cost, total | 180 | 185
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | 4 | 6
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 1 | 0
Debt securities, available-for-sale | 183 | 191
U. S. Treasury obligations | Debt Securities |  |
Debt securities available-for-sale |  |
Debt securities, available-for-sale, amortized cost, total | 0 | 1,491
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | 0 | 0
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 0 | 4
Debt securities, available-for-sale | 0 | 1,487
GSE debentures | Debt Securities |  |
Debt securities available-for-sale |  |
Debt securities, available-for-sale, amortized cost, total | 1,974 | 1,749
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | 0 | 0
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 330 | 351
Debt securities, available-for-sale | 1,644 | 1,398
Asset-backed securities | Debt Securities |  |
Debt securities available-for-sale |  |
Debt securities, available-for-sale, amortized cost, total | 332 | 375
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | 0 | 0
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 9 | 14
Debt securities, available-for-sale | 323 | 361
Municipal bonds | Debt Securities |  |
Debt securities available-for-sale |  |
Debt securities, available-for-sale, amortized cost, total | 7 | 30
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | 0 | 0
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 0 | 0
Debt securities, available-for-sale | 7 | 30
Corporate bonds | Debt Securities |  |
Debt securities available-for-sale |  |
Debt securities, available-for-sale, amortized cost, total | 789 | 913
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | 3 | 2
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 39 | 30
Debt securities, available-for-sale | 753 | 885
Foreign notes | Debt Securities |  |
Debt securities available-for-sale |  |
Debt securities, available-for-sale, amortized cost, total | 10 | 20
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | 0 | 0
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 2 | 0
Debt securities, available-for-sale | 8 | 20
Capital trust notes | Debt Securities |  |
Debt securities available-for-sale |  |
Debt securities, available-for-sale, amortized cost, total | 96 | 97
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | 5 | 5
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 14 | 12
Debt securities, available-for-sale | 87 | 90
Mutual funds and common stock | Equity Securities |  |
Equity securities: |  |
Equity securities, Amortized Cost | 16 | 16
Equity securities, Gross Unrealized Loss | 2 | 2
Equity securities, Fair Value | $ 14 | $ 14

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