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Securities - Scheduled Contractual Maturities of AFS Debt Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Amortized cost |  |
Within One Year | $ 582,092 |
After One Year through Five Years | 628,822 |
After Five Years through Ten Years | 908,682 |
After Ten Years | 11,500,185 |
Total | 13,619,781 | $ 11,505,775
Fair value |  |
Within One Year | 573,418 |
After One Year through Five Years | 618,819 |
After Five Years through Ten Years | 801,082 |
After Ten Years | 11,218,901 |
Total | $ 13,212,220 |
Weighted-Average Yield |  |
Within One Year | 1.44% |
After One Year through Five Years | 2.76% |
After Five Years through Ten Years | 2.63% |
After Ten Years | 4.55% |
Total | 4.21% |
U.S. Treasury securities |  |
Amortized cost |  |
Within One Year | $ 440,969 |
After One Year through Five Years | 472,570 |
After Five Years through Ten Years | 96,514 |
After Ten Years | 0 |
Total | 1,010,053 | 676,300
Fair value |  |
Within One Year | 432,148 |
After One Year through Five Years | 465,270 |
After Five Years through Ten Years | 96,495 |
After Ten Years | 0 |
Total | $ 993,913 |
Weighted-Average Yield |  |
Within One Year | 1.11% |
After One Year through Five Years | 2.75% |
After Five Years through Ten Years | 3.84% |
After Ten Years | 0.00% |
Total | 2.14% |
U.S. government agency and U.S. government-sponsored enterprise debt securities |  |
Amortized cost |  |
Within One Year | $ 0 |
After One Year through Five Years | 26,677 |
After Five Years through Ten Years | 203,514 |
After Ten Years | 57,496 |
Total | 287,687 | 308,220
Fair value |  |
Within One Year | 0 |
After One Year through Five Years | 26,256 |
After Five Years through Ten Years | 182,396 |
After Ten Years | 49,002 |
Total | $ 257,654 |
Weighted-Average Yield |  |
Within One Year | 0.00% |
After One Year through Five Years | 1.58% |
After Five Years through Ten Years | 2.07% |
After Ten Years | 2.16% |
Total | 2.04% |
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities |  |
Amortized cost |  |
Within One Year | $ 0 |
After One Year through Five Years | 53,961 |
After Five Years through Ten Years | 98,540 |
After Ten Years | 10,391,777 |
Total | 10,544,278 |
Fair value |  |
Within One Year | 0 |
After One Year through Five Years | 52,339 |
After Five Years through Ten Years | 91,020 |
After Ten Years | 10,254,632 |
Total | $ 10,397,991 |
Weighted-Average Yield |  |
Within One Year | 0.00% |
After One Year through Five Years | 2.82% |
After Five Years through Ten Years | 2.83% |
After Ten Years | 4.79% |
Total | 4.76% |
Municipal securities |  |
Amortized cost |  |
Within One Year | $ 7,300 |
After One Year through Five Years | 19,206 |
After Five Years through Ten Years | 22,614 |
After Ten Years | 228,155 |
Total | 277,275 | 287,301
Fair value |  |
Within One Year | 7,219 |
After One Year through Five Years | 18,679 |
After Five Years through Ten Years | 19,438 |
After Ten Years | 197,766 |
Total | $ 243,102 |
Weighted-Average Yield |  |
Within One Year | 1.15% |
After One Year through Five Years | 2.50% |
After Five Years through Ten Years | 2.40% |
After Ten Years | 2.26% |
Total | 2.26% |
Non-agency mortgage-backed securities |  |
Amortized cost |  |
Within One Year | $ 0 |
After One Year through Five Years | 1,324 |
After Five Years through Ten Years | 0 |
After Ten Years | 665,871 |
Total | 667,195 |
Fair value |  |
Within One Year | 0 |
After One Year through Five Years | 1,320 |
After Five Years through Ten Years | 0 |
After Ten Years | 583,415 |
Total | $ 584,735 |
Weighted-Average Yield |  |
Within One Year | 0.00% |
After One Year through Five Years | 3.35% |
After Five Years through Ten Years | 0.00% |
After Ten Years | 2.28% |
Total | 2.28% |
Corporate debt securities |  |
Amortized cost |  |
Within One Year | $ 15,158 |
After One Year through Five Years | 26,500 |
After Five Years through Ten Years | 437,500 |
After Ten Years | 75,000 |
Total | 554,158 | 653,500
Fair value |  |
Within One Year | 15,116 |
After One Year through Five Years | 26,204 |
After Five Years through Ten Years | 361,829 |
After Ten Years | 61,832 |
Total | $ 464,981 |
Weighted-Average Yield |  |
Within One Year | 4.07% |
After One Year through Five Years | 5.23% |
After Five Years through Ten Years | 2.38% |
After Ten Years | 2.09% |
Total | 2.53% |
Foreign government bonds |  |
Amortized cost |  |
Within One Year | $ 118,665 |
After One Year through Five Years | 28,584 |
After Five Years through Ten Years | 50,000 |
After Ten Years | 50,000 |
Total | 247,249 | 244,803
Fair value |  |
Within One Year | 118,935 |
After One Year through Five Years | 28,751 |
After Five Years through Ten Years | 49,904 |
After Ten Years | 40,865 |
Total | $ 238,455 |
Weighted-Average Yield |  |
Within One Year | 2.31% |
After One Year through Five Years | 1.81% |
After Five Years through Ten Years | 4.34% |
After Ten Years | 1.50% |
Total | 2.50% |
Asset-backed securities |  |
Amortized cost |  |
Within One Year | $ 0 |
After One Year through Five Years | 0 |
After Five Years through Ten Years | 0 |
After Ten Years | 31,886 |
Total | 31,886 | $ 35,086
Fair value |  |
Within One Year | 0 |
After One Year through Five Years | 0 |
After Five Years through Ten Years | 0 |
After Ten Years | 31,389 |
Total | $ 31,389 |
Weighted-Average Yield |  |
Within One Year | 0.00% |
After One Year through Five Years | 0.00% |
After Five Years through Ten Years | 0.00% |
After Ten Years | 4.65% |
Total | 4.65% |

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