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Securities Available for sale, Unrealized Loss Position, Fair Value (Details) $ in Thousands | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
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Available for sale, Unrealized Loss Position [Line Items] |  |
Available for sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 1,153 | 462
Available for sale, Securities in Unrealized Loss Position, Less than 12 Months [Abstract] |  |
Available for sale securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | $ 6,173,710 | $ 4,911,358
Available for sale securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 3,829,168 | 1,476,208
Available for sale securities, Unrealized Loss Position, Fair Value | 10,002,878 | 6,387,566
Available for sale securities, Securities in Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Available for sale securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 376,598 | 80,372
Available for sale securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 517,616 | 33,608
Available for sale securities, Unrealized Loss Position, Accumulated Loss | 894,214 | $ 113,980
Debt Securities, Available-for-sale, Allowance for Credit Loss | $ 0 |
U.S. Treasury [Member] |  |
Available for sale, Unrealized Loss Position [Line Items] |  |
Available for sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 1 | 1
Available for sale, Securities in Unrealized Loss Position, Less than 12 Months [Abstract] |  |
Available for sale securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | $ 0 | $ 1,000
Available for sale securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 899 | 0
Available for sale securities, Unrealized Loss Position, Fair Value | 899 | 1,000
Available for sale securities, Securities in Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Available for sale securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0 | 1
Available for sale securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 102 | 0
Available for sale securities, Unrealized Loss Position, Accumulated Loss | $ 102 | $ 1
Municipal securities [Member] |  |
Available for sale, Unrealized Loss Position [Line Items] |  |
Available for sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 227 | 175
Available for sale, Securities in Unrealized Loss Position, Less than 12 Months [Abstract] |  |
Available for sale securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | $ 146,634 | $ 423,575
Available for sale securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 428,248 | 22,476
Available for sale securities, Unrealized Loss Position, Fair Value | 574,882 | 446,051
Available for sale securities, Securities in Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Available for sale securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 5,301 | 7,762
Available for sale securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 58,395 | 726
Available for sale securities, Unrealized Loss Position, Accumulated Loss | $ 63,696 | $ 8,488
Residential agency mortgage-backed securities [Member] |  |
Available for sale, Unrealized Loss Position [Line Items] |  |
Available for sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 613 | 120
Available for sale, Securities in Unrealized Loss Position, Less than 12 Months [Abstract] |  |
Available for sale securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | $ 3,879,582 | $ 2,382,094
Available for sale securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 863,732 | 750,044
Available for sale securities, Unrealized Loss Position, Fair Value | 4,743,314 | 3,132,138
Available for sale securities, Securities in Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Available for sale securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 256,973 | 37,121
Available for sale securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 102,974 | 20,327
Available for sale securities, Unrealized Loss Position, Accumulated Loss | $ 359,947 | $ 57,448
Residential non-agency mortgage-backed securities [Member] |  |
Available for sale, Unrealized Loss Position [Line Items] |  |
Available for sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 26 |
Available for sale, Securities in Unrealized Loss Position, Less than 12 Months [Abstract] |  |
Available for sale securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | $ 499,716 |
Available for sale securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 0 |
Available for sale securities, Unrealized Loss Position, Fair Value | 499,716 |
Available for sale securities, Securities in Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Available for sale securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 50,623 |
Available for sale securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 |
Available for sale securities, Unrealized Loss Position, Accumulated Loss | $ 50,623 |
Commercial agency mortgage-backed securities [Member] |  |
Available for sale, Unrealized Loss Position [Line Items] |  |
Available for sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 285 | 165
Available for sale, Securities in Unrealized Loss Position, Less than 12 Months [Abstract] |  |
Available for sale securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | $ 1,647,778 | $ 2,104,689
Available for sale securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 2,535,816 | 703,216
Available for sale securities, Unrealized Loss Position, Fair Value | 4,183,594 | 2,807,905
Available for sale securities, Securities in Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Available for sale securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 63,701 | 35,488
Available for sale securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 356,118 | 12,527
Available for sale securities, Unrealized Loss Position, Accumulated Loss | $ 419,819 | $ 48,015
Other debt securities [Member] |  |
Available for sale, Unrealized Loss Position [Line Items] |  |
Available for sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 1 | 1
Available for sale, Securities in Unrealized Loss Position, Less than 12 Months [Abstract] |  |
Available for sale securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | $ 0 | $ 0
Available for sale securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 473 | 472
Available for sale securities, Unrealized Loss Position, Fair Value | 473 | 472
Available for sale securities, Securities in Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Available for sale securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0 | 0
Available for sale securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 27 | 28
Available for sale securities, Unrealized Loss Position, Accumulated Loss | $ 27 | $ 28

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