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Fair Value Measurement and Fair Value of Financial Instruments - Schedule Of The Carrying And Fair Value Estimates Per The Fair Value Hierarchy Of Financial Instruments Measured On a Nonrecurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financial assets: |  |
Cash and cash equivalents | $ 5,250,742 | $ 4,614,984
Interest-bearing deposits with banks | 48,198 | 10,498
Resale agreements | 425,000 | 785,000
HTM debt securities | 2,917,413 | 2,956,040
Restricted equity securities, at cost | 165,259 | 79,811
Loans held-for-investment, net | 53,024,585 | 51,542,039
Financial liabilities: |  |
Time deposits | 23,215,772 |
FHLB advances | 3,500,000 | 0
Carrying Amount |  |
Financial assets: |  |
Cash and cash equivalents | 5,250,742 | 4,614,984
Interest-bearing deposits with banks | 48,198 | 10,498
Resale agreements | 425,000 | 785,000
HTM debt securities | 2,917,413 | 2,956,040
Restricted equity securities, at cost | 165,259 | 79,811
Loans held-for-sale |  | 116
Loans held-for-investment, net | 53,024,585 | 51,542,039
Mortgage servicing rights | 5,234 | 6,602
Accrued interest receivable | 316,392 | 331,490
Financial liabilities: |  |
Demand, checking, savings and money market deposits | 39,959,251 | 38,048,974
Time deposits | 23,215,772 | 18,043,464
FHLB advances | 3,500,000 |
BTFP borrowings |  | 4,500,000
Long-term debt | 32,001 | 148,249
Accrued interest payable | 61,950 | 205,430
Estimated Fair Value |  |
Financial assets: |  |
Cash and cash equivalents | 5,250,742 | 4,614,984
Interest-bearing deposits with banks | 48,198 | 10,498
Resale agreements | 329,769 | 699,056
HTM debt securities | 2,387,754 | 2,453,971
Restricted equity securities, at cost | 165,259 | 79,811
Loans held-for-sale |  | 116
Loans held-for-investment, net | 51,328,254 | 50,256,565
Mortgage servicing rights | 8,822 | 9,470
Accrued interest receivable | 316,392 | 331,490
Financial liabilities: |  |
Demand, checking, savings and money market deposits | 39,959,251 | 38,048,974
Time deposits | 23,225,317 | 18,004,951
FHLB advances | 3,497,953 |
BTFP borrowings |  | 4,500,000
Long-term debt | 31,246 | 150,896
Accrued interest payable | 61,950 | 205,430
Estimated Fair Value | Level 1 |  |
Financial assets: |  |
Cash and cash equivalents | 5,250,742 | 4,614,984
Interest-bearing deposits with banks | 0 | 0
Resale agreements | 0 | 0
HTM debt securities | 499,858 | 488,551
Restricted equity securities, at cost | 0 | 0
Loans held-for-sale |  | 0
Loans held-for-investment, net | 0 | 0
Mortgage servicing rights | 0 | 0
Accrued interest receivable | 0 | 0
Financial liabilities: |  |
Demand, checking, savings and money market deposits | 0 | 0
Time deposits | 0 | 0
FHLB advances | 0 |
BTFP borrowings |  | 0
Long-term debt | 0 | 0
Accrued interest payable | 0 | 0
Estimated Fair Value | Level 2 |  |
Financial assets: |  |
Cash and cash equivalents | 0 | 0
Interest-bearing deposits with banks | 48,198 | 10,498
Resale agreements | 329,769 | 699,056
HTM debt securities | 1,887,896 | 1,965,420
Restricted equity securities, at cost | 165,259 | 79,811
Loans held-for-sale |  | 116
Loans held-for-investment, net | 0 | 0
Mortgage servicing rights | 0 | 0
Accrued interest receivable | 316,392 | 331,490
Financial liabilities: |  |
Demand, checking, savings and money market deposits | 39,959,251 | 38,048,974
Time deposits | 23,225,317 | 18,004,951
FHLB advances | 3,497,953 |
BTFP borrowings |  | 4,500,000
Long-term debt | 31,246 | 150,896
Accrued interest payable | 61,950 | 205,430
Estimated Fair Value | Level 3 |  |
Financial assets: |  |
Cash and cash equivalents | 0 | 0
Interest-bearing deposits with banks | 0 | 0
Resale agreements | 0 | 0
HTM debt securities | 0 | 0
Restricted equity securities, at cost | 0 | 0
Loans held-for-sale |  | 0
Loans held-for-investment, net | 51,328,254 | 50,256,565
Mortgage servicing rights | 8,822 | 9,470
Accrued interest receivable | 0 | 0
Financial liabilities: |  |
Demand, checking, savings and money market deposits | 0 | 0
Time deposits | 0 | 0
FHLB advances | 0 |
BTFP borrowings |  | 0
Long-term debt | 0 | 0
Accrued interest payable | $ 0 | $ 0

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