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Securities (Tables) | 6 Months Ended
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Jun. 30, 2022
Investments, Debt and Equity Securities [Abstract] |
Schedule Of Amortized Cost, Gross Unrealized Gains and Losses, And Estimated Fair Value Of Debt Securities Available For Sale And Debt Securities Held To Maturity | The amortized cost, gross unrealized gains and losses, and estimated fair value of debt securities held to maturity and debt securities available for sale are as follows:
| June 30, 2022
|  |  | Recognized in OCI (1) |  |  |  | Not Recognized in OCI |  |
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Carrying Value |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
| (In millions)
Debt securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |
Residential agency | $ | 316 |  |  | $ | — |  |  | $ | (11) |  |  | $ | 305 |  |  | $ | — |  |  | $ | (9) |  |  | $ | 296 |
Commercial agency | 532 |  |  | — |  |  | (1) |  |  | 531 |  |  | — |  |  | (10) |  |  | 521 |
| $ | 848 |  |  | $ | — |  |  | $ | (12) |  |  | $ | 836 |  |  | $ | — |  |  | $ | (19) |  |  | $ | 817 |
Debt securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities | $ | 1,329 |  |  | $ | 6 |  |  | $ | (83) |  |  | $ | 1,252 |  |  |  |  |  |  | $ | 1,252 |
Federal agency securities | 711 |  |  | — |  |  | (28) |  |  | 683 |  |  |  |  |  |  | 683 |
Obligations of states and political subdivisions | 3 |  |  | — |  |  | — |  |  | 3 |  |  |  |  |  | 3 |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |
Residential agency | 20,700 |  |  | 38 |  |  | (1,731) |  |  | 19,007 |  |  |  |  |  |  | 19,007 |
Residential non-agency | 1 |  |  | — |  |  | — |  |  | 1 |  |  |  |  |  |  | 1 |
Commercial agency | 6,961 |  |  | 2 |  |  | (356) |  |  | 6,607 |  |  |  |  |  |  | 6,607 |
Commercial non-agency | 324 |  |  | — |  |  | (9) |  |  | 315 |  |  |  |  |  |  | 315 |
Corporate and other debt securities | 1,234 |  |  | 1 |  |  | (51) |  |  | 1,184 |  |  |  |  |  |  | 1,184 |
| $ | 31,263 |  |  | $ | 47 |  |  | $ | (2,258) |  |  | $ | 29,052 |  |  |  |  |  |  | $ | 29,052 |
| December 31, 2021
|  |  | Recognized in OCI (1) |  |  |  | Not Recognized in OCI |  |
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Carrying Value |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
| (In millions)
Debt securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |
Residential agency | $ | 370 |  |  | $ | — |  |  | $ | (13) |  |  | $ | 357 |  |  | $ | 20 |  |  | $ | — |  |  | $ | 377 |
Commercial agency | 543 |  |  | — |  |  | (1) |  |  | 542 |  |  | 31 |  |  | — |  |  | 573 |
| $ | 913 |  |  | $ | — |  |  | $ | (14) |  |  | $ | 899 |  |  | $ | 51 |  |  | $ | — |  |  | $ | 950 |
Debt securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities | $ | 1,137 |  |  | $ | 2 |  |  | $ | (7) |  |  | $ | 1,132 |  |  |  |  |  |  | $ | 1,132 |
Federal agency securities | 94 |  |  | 1 |  |  | (3) |  |  | 92 |  |  |  |  |  |  | 92 |
Obligations of states and political subdivisions | 4 |  |  | — |  |  | — |  |  | 4 |  |  |  |  |  |  | 4 |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |
Residential agency | 18,873 |  |  | 287 |  |  | (198) |  |  | 18,962 |  |  |  |  |  |  | 18,962 |
Residential non-agency | 1 |  |  | — |  |  | — |  |  | 1 |  |  |  |  |  |  | 1 |
Commercial agency | 6,271 |  |  | 163 |  |  | (61) |  |  | 6,373 |  |  |  |  |  |  | 6,373 |
Commercial non-agency | 532 |  |  | 4 |  |  | — |  |  | 536 |  |  |  |  |  |  | 536 |
Corporate and other debt securities | 1,351 |  |  | 36 |  |  | (6) |  |  | 1,381 |  |  |  |  |  |  | 1,381 |
| $ | 28,263 |  |  | $ | 493 |  |  | $ | (275) |  |  | $ | 28,481 |  |  |  |  |  |  | $ | 28,481 |
_________ (1)The gross unrealized losses recognized in OCI on securities held to maturity resulted from a transfer of securities available for sale to held to maturity in the second quarter of 2013.
Schedule Of Cost And Estimated Fair Value Of Debt Securities Available For Sale And Debt Securities Held To Maturity By Contractual Maturity | The amortized cost and estimated fair value of debt securities held to maturity and debt securities available for sale at June 30, 2022, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
| Amortized Cost |  | Estimated Fair Value
| (In millions)
Debt securities held to maturity: |  |  |
Mortgage-backed securities: |  |  |
Residential agency | $ | 316 |  |  | $ | 296 |
Commercial agency | 532 |  |  | 521 |
| $ | 848 |  |  | $ | 817 |
Debt securities available for sale: |  |  |
Due in one year or less | $ | 195 |  |  | $ | 194 |
Due after one year through five years | 2,277 |  |  | 2,195 |
Due after five years through ten years | 694 |  |  | 636 |
Due after ten years | 111 |  |  | 97 |
Mortgage-backed securities: |  |  |
Residential agency | 20,700 |  |  | 19,007 |
Residential non-agency | 1 |  |  | 1 |
Commercial agency | 6,961 |  |  | 6,607 |
Commercial non-agency | 324 |  |  | 315 |
| $ | 31,263 |  |  | $ | 29,052 |
Schedule Of Gross Unrealized Losses And Estimated Fair Value Of Debt Securities Available For Sale and Held to Maturity | The following tables present gross unrealized losses and the related estimated fair value of debt securities held to maturity at June 30, 2022 and debt securities available for sale are presented at June 30, 2022 and December 31, 2021. For debt securities transferred to held to maturity from available for sale, the analysis in the tables below compares the securities' original amortized cost to its current estimated fair value; there were no unrealized losses on debt securities held to maturity using this analysis at December 31, 2021. These securities are segregated between investments that have been in a continuous unrealized loss position for less than twelve months and for twelve months or more.
| June 30, 2022
| Less Than Twelve Months |  | Twelve Months or More |  | Total
| Estimated Fair Value |  | Gross Unrealized Losses |  | Estimated Fair Value |  | Gross Unrealized Losses |  | Estimated Fair Value |  | Gross Unrealized Losses
| (In millions)
Debt securities held to maturity: |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |
Residential agency | $ | 296 |  |  | $ | (20) |  |  | $ | — |  |  | $ | — |  |  | $ | 296 |  |  | $ | (20) |
Commercial agency | 521 |  | (11) |  | — |  | — |  |  | 521 |  |  | (11) |
| $ | 817 |  |  | $ | (31) |  |  | $ | — |  |  | $ | — |  |  | $ | 817 |  |  | $ | (31) |
Debt securities available for sale: |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities | $ | 994 |  |  | $ | (82) |  |  | $ | 5 |  |  | $ | (1) |  |  | $ | 999 |  |  | $ | (83) |
Federal agency securities | 623 |  |  | (19) |  |  | 56 |  |  | (9) |  |  | 679 |  |  | (28) |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |
Residential agency | 14,107 |  |  | (1,077) |  |  | 4,321 |  |  | (654) |  |  | 18,428 |  |  | (1,731) |
Commercial agency | 5,214 |  |  | (225) |  |  | 1,003 |  |  | (131) |  |  | 6,217 |  |  | (356) |
Commercial non-agency | 315 |  |  | (9) |  |  | — |  |  | — |  |  | 315 |  |  | (9) |
Corporate and other debt securities | 971 |  |  | (47) |  |  | 76 |  |  | (4) |  |  | 1,047 |  |  | (51) |
| $ | 22,224 |  |  | $ | (1,459) |  |  | $ | 5,461 |  |  | $ | (799) |  |  | $ | 27,685 |  |  | $ | (2,258) |
| December 31, 2021
| Less Than Twelve Months |  | Twelve Months or More |  | Total
| Estimated Fair Value |  | Gross Unrealized Losses |  | Estimated Fair Value |  | Gross Unrealized Losses |  | Estimated Fair Value |  | Gross Unrealized Losses
| (In millions)
Debt securities available for sale: |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities | $ | 1,010 |  |  | $ | (7) |  |  | $ | — |  |  | $ | — |  |  | $ | 1,010 |  |  | $ | (7) |
Federal agency securities | 63 |  |  | (3) |  |  | — |  |  | — |  |  | 63 |  |  | (3) |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |
Residential agency | 9,528 |  |  | (171) |  |  | 686 |  |  | (27) |  |  | 10,214 |  |  | (198) |
Commercial agency | 1,333 |  |  | (29) |  |  | 760 |  |  | (32) |  |  | 2,093 |  |  | (61) |
Corporate and other debt securities | 444 |  |  | (6) |  |  | — |  |  | — |  |  | 444 |  |  | (6) |
| $ | 12,378 |  |  | $ | (216) |  |  | $ | 1,446 |  |  | $ | (59) |  |  | $ | 13,824 |  |  | $ | (275) |
Schedule of Realized Gain (Loss) | Gross realized gains and gross realized losses on sales of debt securities available for sale for the six months ended June 30, 2022 is presented below. Gross realized gains and gross realized losses on sales of debt securities available for sale were immaterial for the three months ended June 30, 2022 and the three and six months ended June 30, 2021. The cost of securities sold is based on the specific identification method. As part of the Company's normal process for evaluating impairment, management did not identify any positions where impairment was believed to exist in either of the three and six months ended June 30, 2022 or 2021.
|  |  | Six Months Ended |  |
|  |  | June 30, 2022 |  |
|  |  | (in millions) |  |
Gross realized gains |  |  | $ | 17 |  |  |
Gross realized losses |  |  | (17) |  |  |
Securities gains (losses), net |  |  | $ | — |  |  |

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