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Regulatory Matters (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Parent Company [Member] |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Banking Regulation, Total Capital, Actual | $ 4,282,597 | $ 3,997,205
Banking Regulation, Total Risk-Based Capital Ratio, Actual | 12.61% | 12.21%
Banking Regulation, Total Risk-Based Capital, Capital Adequacy, Minimum | $ 2,716,014 | $ 2,618,596
Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum | 8.00% | 8.00%
Banking Regulation, Tier 1 Risk-Based Capital, Actual | $ 3,590,948 | $ 3,269,050
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Actual | 10.58% | 9.99%
Banking Regulation, Tier 1 Risk-Based Capital, Capital Adequacy, Minimum | $ 2,037,010 | $ 1,963,947
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum | 6.00% | 6.00%
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Actual | $ 3,396,836 | $ 3,074,938
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Actual | 10.01% | 9.39%
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Capital Adequacy, Minimum | $ 1,527,758 | $ 1,472,960
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum | 4.50% | 4.50%
Banking Regulation, Tier 1 Leverage Capital, Actual | $ 3,590,948 | $ 3,269,050
Banking Regulation, Tier 1 Leverage Capital Ratio, Actual | 8.73% | 8.06%
Banking Regulation, Tier 1 Leverage Capital, Capital Adequacy, Minimum | $ 1,644,627 | $ 1,622,053
Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum | 4.00% | 4.00%
Subsidiaries [Member] |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Banking Regulation, Total Capital, Actual | $ 4,078,042 | $ 3,803,052
Banking Regulation, Total Risk-Based Capital Ratio, Actual | 12.03% | 11.64%
Banking Regulation, Total Risk-Based Capital, Capital Adequacy, Minimum | $ 2,710,815 | $ 2,614,469
Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum | 8.00% | 8.00%
Banking Regulation, Total Risk-Based Capital, Well Capitalized, Minimum | $ 3,388,519 | $ 3,268,086
Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum | 10.00% | 10.00%
Banking Regulation, Tier 1 Risk-Based Capital, Actual | $ 3,425,721 | $ 3,167,182
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Actual | 10.11% | 9.69%
Banking Regulation, Tier 1 Risk-Based Capital, Capital Adequacy, Minimum | $ 2,033,111 | $ 1,960,852
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum | 6.00% | 6.00%
Banking Regulation, Tier 1 Risk-Based Capital, Well Capitalized, Minimum | $ 2,710,815 | $ 2,614,469
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum | 8.00% | 8.00%
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Actual | $ 3,425,721 | $ 3,167,182
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Actual | 10.11% | 9.69%
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Capital Adequacy, Minimum | $ 1,524,833 | $ 1,470,639
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum | 4.50% | 4.50%
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Well Capitalized, Minimum | $ 2,202,537 | $ 2,124,256
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum | 6.50% | 6.50%
Banking Regulation, Tier 1 Leverage Capital, Actual | $ 3,425,721 | $ 3,167,182
Banking Regulation, Tier 1 Leverage Capital Ratio, Actual | 8.34% | 7.82%
Banking Regulation, Tier 1 Leverage Capital, Capital Adequacy, Minimum | $ 1,642,484 | $ 1,620,970
Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum | 4.00% | 4.00%
Banking Regulation, Tier 1 Leverage Capital, Well Capitalized, Minimum | $ 2,053,105 | $ 2,026,212
Banking Regulation, Tier 1 Leverage Capital Ratio, Well Capitalized, Minimum | 5.00% | 5.00%

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