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Fair Value Measurements, Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023 | Dec. 31, 2022
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Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | $ 4,152,527 | $ 3,600,892 |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 3,769,224 | 3,860,235 |
Debt Securities, Held-to-Maturity, Fair Value | 3,352,775 | 3,380,624 |
Equity Securities, FV-NI and without Readily Determinable Fair Value | 23,158 | 41,651 |
Assets | 42,210,815 | 41,015,855 |
Liabilities, Fair Value Disclosure |  |  |
Deposits | 33,554,298 | 33,446,049 |
Federal Funds Purchased and Securities Sold under Agreements to Repurchase | 417,028 | 326,780 |
Bank Term Funding Program Funding | 500,000 | 0 |
Short-Term Debt | 917,028 | 326,780 |
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances | 1,913,294 | 1,940,194 |
Liabilities | 37,797,579 | 36,841,882 |
Standby Letters of Credit [Member] |  |  |
Liabilities, Fair Value Disclosure |  |  |
Lending Related Commitments | 235,000 | 212,000 |
Interest Rate Contract |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Derivative Asset | 36,254 | 32,985 |
Liabilities, Fair Value Disclosure |  |  |
Derivative Liability | 4,727 | 533 |
Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Cash and Due from Banks | 554,631 | 484,384 |
Interest-bearing Deposits in Banks and Other Financial Institutions | 408,101 | 425,089 |
Federal Funds Sold and Securities Borrowed or Purchased under Agreements to Resell, Fair Value Disclosure | 4,310 | 14,350 |
Equity Securities, FV-NI | 10,658 | 31,651 |
Equity Securities, FV-NI and without Readily Determinable Fair Value | 23,158 | 41,651 |
FHLB and Federal Reserve Bank stocks | 178,168 | 229,171 |
Residential Held-for-sale, Fair Value Disclosure | 67,219 | 33,011 |
Loan, Held-for-Sale, Fair Value Disclosure | 11,833 | 90,303 |
Loans and Leases Receivable, Net Amount | 29,594,691 | 28,865,124 |
Loans Receivable, Fair Value Disclosure | 28,606,404 | 27,371,086 |
Life Insurance, Corporate or Bank Owned, Amount | 686,704 | 682,649 |
Servicing Asset | 81,977 | 84,390 |
Assets | 39,653,836 | 38,534,897 |
Assets, Fair Value Disclosure | 38,249,099 | 36,561,249 |
Liabilities, Fair Value Disclosure |  |  |
Noninterest-bearing Domestic Deposit, Demand | 5,857,421 | 6,119,956 |
Deposits, Savings Deposits | 5,072,508 | 4,835,701 |
Interest-Bearing Domestic Deposit, Demand | 8,605,578 | 8,843,967 |
Deposits, Money Market Deposits | 6,095,206 | 6,330,453 |
Brokered CDs, Carrying Amount | 4,242,670 | 4,447,479 |
Brokered CDs, Fair Value | 4,242,670 | 4,447,479 |
Time Deposits, at Carrying Value | 3,680,914 | 2,868,494 |
Time Deposits | 3,680,914 | 2,868,494 |
Deposits | 33,554,298 | 33,446,049 |
Federal Funds Purchased and Securities Sold under Agreements to Repurchase | 417,028 | 326,780 |
Federal Funds Purchased and Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure | 417,001 | 326,757 |
Bank Term Funding Program Funding | 500,000 |  |
Bank Term Funding Program Funding, Fair Value Disclosure | 499,960 |  |
Short-Term Debt | 917,028 |  |
Short-term Debt, Fair Value | 916,961 |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances | 1,913,294 | 1,940,194 |
Federal Home Loan Bank Borrowings, Fair Value Disclosure | 1,916,520 | 1,944,600 |
Other Long-Term Debt | 844,342 | 541,269 |
Long-term Debt, Fair Value | 843,366 | 534,983 |
Long-Term Line of Credit | 2,386 | 2,157 |
Liabilities | 37,379,751 | 36,459,407 |
Liabilities, Fair Value Disclosure | 37,381,935 | 36,457,504 |
Fair Value, Measurements, Recurring | Commitments [Member] |  |  |
Liabilities, Fair Value Disclosure |  |  |
Derivative Liability | 485 | 673 |
Fair Value, Measurements, Recurring | Interest Rate Lock Commitments [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Derivative Asset | 822 | 439 |
Fair Value, Measurements, Recurring | Designated as Hedging Instrument | Interest Rate Contract |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Derivative Asset | 20,010 | 8,075 |
Liabilities, Fair Value Disclosure |  |  |
Derivative Liability | 91 | 930 |
Fair Value, Measurements, Recurring | Designated as Hedging Instrument | Foreign Exchange Forward [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Foreign Currency Contract, Asset, Fair Value Disclosure | 275 | 632 |
Liabilities, Fair Value Disclosure |  |  |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 689 | 2,946 |
Fair Value, Measurements, Recurring | Not Designated as Hedging Instrument [Member] | Interest Rate Contract |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Derivative Asset | 95,396 | 111,623 |
Liabilities, Fair Value Disclosure |  |  |
Derivative Liability | 142,560 | 195,662 |
Fair Value, Measurements, Recurring | Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Foreign Currency Contract, Asset, Fair Value Disclosure | 4,865 | 2,954 |
Liabilities, Fair Value Disclosure |  |  |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 4,579 | 2,746 |
US Treasury Securities |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 36,948 | 35,902 |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 1,000 | 999 |
Debt Securities, Held-to-Maturity, Fair Value | 990 | 963 |
US Treasury Securities | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 36,948 | 35,902 |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 1,000 | 999 |
Debt Securities, Held-to-Maturity, Fair Value | 990 | 963 |
US States and Political Subdivisions Debt Securities [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 81,089 | 91,817 |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 1,664,740 | 1,682,473 |
Debt Securities, Held-to-Maturity, Fair Value | 1,540,348 | 1,554,059 |
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 81,089 | 91,817 |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 1,664,665 | 1,682,398 |
Debt Securities, Held-to-Maturity, Fair Value | 1,540,273 | 1,553,984 |
Residential Mortgage-Backed Securities [Member] | US Government Sponsored-Enterprise Insured Loans |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 1,085,414 | 1,120,794 |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 900,743 | 941,973 |
Debt Securities, Held-to-Maturity, Fair Value | 778,883 | 804,393 |
Residential Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 2,663,560 | 2,042,675 |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 45,180 | 48,979 |
Debt Securities, Held-to-Maturity, Fair Value | 42,979 | 46,170 |
Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | US Government Sponsored-Enterprise Insured Loans |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 1,085,414 | 1,120,794 |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 900,743 | 941,973 |
Debt Securities, Held-to-Maturity, Fair Value | 778,883 | 804,393 |
Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | Government National Mortgage Association (GNMA) [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 2,663,560 | 2,042,675 |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 45,180 | 48,979 |
Debt Securities, Held-to-Maturity, Fair Value | 42,979 | 46,170 |
Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | Mortgage-backed Securities, Issued by Private Enterprises [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 329,349 | 345,083 |
Debt Securities, Held-to-Maturity, Fair Value | 282,103 | 289,507 |
Commercial Mortgage-Backed Securities [Member] | US Government Sponsored-Enterprise Insured Loans |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 18,035 | 16,937 |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 775,209 | 780,995 |
Debt Securities, Held-to-Maturity, Fair Value | 659,852 | 632,914 |
Commercial Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 151,617 | 154,793 |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 53,005 | 59,733 |
Debt Securities, Held-to-Maturity, Fair Value | 47,620 | 52,619 |
Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | US Government Sponsored-Enterprise Insured Loans |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 18,035 | 16,937 |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 775,209 | 780,995 |
Debt Securities, Held-to-Maturity, Fair Value | 659,852 | 632,914 |
Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | Government National Mortgage Association (GNMA) [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 151,617 | 154,793 |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 53,005 | 59,733 |
Debt Securities, Held-to-Maturity, Fair Value | 47,620 | 52,619 |
Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 112,350 | 133,975 |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 0 |  |
Debt Securities, Held-to-Maturity, Fair Value | 0 |  |
Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 112,350 | 133,975 |
US Government-sponsored Enterprises Debt Securities [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 516 | 1,051 |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 0 |  |
Debt Securities, Held-to-Maturity, Fair Value | 0 |  |
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 516 | 1,051 |
Other Debt Obligations | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 2,997 | 2,950 |
Available-for-sale Securities [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 4,152,527 | 3,600,892 |
Held-to-maturity Securities [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 3,769,150 | 3,860,160 |
Debt Securities, Held-to-Maturity, Fair Value | 3,352,700 | 3,380,550 |
Fair Value, Inputs, Level 1 |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Cash and Due from Banks | 554,631 | 484,384 |
Interest-bearing Deposits in Banks and Other Financial Institutions | 408,101 | 425,089 |
Federal Funds Sold and Securities Borrowed or Purchased under Agreements to Resell, Fair Value Disclosure | 4,310 | 14,350 |
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Cash and Due from Banks | 554,631 | 484,384 |
Interest-bearing Deposits in Banks and Other Financial Institutions | 408,101 | 425,089 |
Federal Funds Sold and Securities Borrowed or Purchased under Agreements to Resell, Fair Value Disclosure | 4,310 | 14,350 |
Equity Securities, FV-NI | 10,587 | 6,883 |
FHLB and Federal Reserve Bank stocks | 0 | 0 |
Residential Held-for-sale, Fair Value Disclosure | 0 | 0 |
Loan, Held-for-Sale, Fair Value Disclosure | 0 | 0 |
Loans Receivable, Fair Value Disclosure | 0 | 0 |
Life Insurance, Corporate or Bank Owned, Amount | 0 | 0 |
Servicing Asset | 0 | 0 |
Assets, Fair Value Disclosure | 1,015,567 | 967,570 |
Liabilities, Fair Value Disclosure |  |  |
Noninterest-bearing Domestic Deposit, Demand | 0 | 0 |
Deposits, Savings Deposits | 0 | 0 |
Interest-Bearing Domestic Deposit, Demand | 0 | 0 |
Deposits, Money Market Deposits | 0 | 0 |
Brokered CDs, Fair Value | 0 | 0 |
Time Deposits | 0 | 0 |
Deposits | 0 | 0 |
Federal Funds Purchased and Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure | 0 | 0 |
Bank Term Funding Program Funding, Fair Value Disclosure | 0 |  |
Short-term Debt, Fair Value | 0 |  |
Federal Home Loan Bank Borrowings, Fair Value Disclosure | 0 | 0 |
Long-term Debt, Fair Value | 0 | 0 |
Long-Term Line of Credit | 0 | 0 |
Liabilities, Fair Value Disclosure | 0 | 0 |
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | Commitments [Member] |  |  |
Liabilities, Fair Value Disclosure |  |  |
Derivative Liability | 0 | 0 |
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | Interest Rate Lock Commitments [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Derivative Asset | 0 | 0 |
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | Designated as Hedging Instrument | Interest Rate Contract |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Derivative Asset | 0 | 0 |
Liabilities, Fair Value Disclosure |  |  |
Derivative Liability | 0 | 0 |
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | Designated as Hedging Instrument | Foreign Exchange Forward [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Foreign Currency Contract, Asset, Fair Value Disclosure | 0 | 0 |
Liabilities, Fair Value Disclosure |  |  |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 0 | 0 |
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | Not Designated as Hedging Instrument [Member] | Interest Rate Contract |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Derivative Asset | 0 | 0 |
Liabilities, Fair Value Disclosure |  |  |
Derivative Liability | 0 | 0 |
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Foreign Currency Contract, Asset, Fair Value Disclosure | 0 | 0 |
Liabilities, Fair Value Disclosure |  |  |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 0 | 0 |
Fair Value, Inputs, Level 1 | US Treasury Securities | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 36,948 | 35,902 |
Debt Securities, Held-to-Maturity, Fair Value | 990 | 963 |
Fair Value, Inputs, Level 1 | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Debt Securities, Held-to-Maturity, Fair Value | 0 | 0 |
Fair Value, Inputs, Level 1 | Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | US Government Sponsored-Enterprise Insured Loans |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Debt Securities, Held-to-Maturity, Fair Value | 0 | 0 |
Fair Value, Inputs, Level 1 | Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | Government National Mortgage Association (GNMA) [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Debt Securities, Held-to-Maturity, Fair Value | 0 | 0 |
Fair Value, Inputs, Level 1 | Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | Mortgage-backed Securities, Issued by Private Enterprises [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Held-to-Maturity, Fair Value | 0 | 0 |
Fair Value, Inputs, Level 1 | Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | US Government Sponsored-Enterprise Insured Loans |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Debt Securities, Held-to-Maturity, Fair Value | 0 | 0 |
Fair Value, Inputs, Level 1 | Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | Government National Mortgage Association (GNMA) [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Debt Securities, Held-to-Maturity, Fair Value | 0 | 0 |
Fair Value, Inputs, Level 1 | Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Fair Value, Inputs, Level 1 | US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Fair Value, Inputs, Level 1 | Other Debt Obligations | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Fair Value, Inputs, Level 1 | Available-for-sale Securities [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 36,948 | 35,902 |
Fair Value, Inputs, Level 1 | Held-to-maturity Securities [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Held-to-Maturity, Fair Value | 990 | 963 |
Fair Value, Inputs, Level 2 |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
FHLB and Federal Reserve Bank stocks | 178,168 | 229,171 |
Life Insurance, Corporate or Bank Owned, Amount | 686,704 | 682,649 |
Liabilities, Fair Value Disclosure |  |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances | 1,913,294 | 1,940,194 |
Other Long-Term Debt | 844,342 | 541,269 |
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Cash and Due from Banks | 0 | 0 |
Interest-bearing Deposits in Banks and Other Financial Institutions | 0 | 0 |
Federal Funds Sold and Securities Borrowed or Purchased under Agreements to Resell, Fair Value Disclosure | 0 | 0 |
Equity Securities, FV-NI | 0 | 0 |
FHLB and Federal Reserve Bank stocks | 178,168 | 229,171 |
Residential Held-for-sale, Fair Value Disclosure | 67,219 | 33,011 |
Loan, Held-for-Sale, Fair Value Disclosure | 11,833 | 90,303 |
Loans Receivable, Fair Value Disclosure | 0 | 0 |
Life Insurance, Corporate or Bank Owned, Amount | 686,704 | 682,649 |
Servicing Asset | 0 | 0 |
Assets, Fair Value Disclosure | 8,531,759 | 8,102,995 |
Liabilities, Fair Value Disclosure |  |  |
Noninterest-bearing Domestic Deposit, Demand | 0 | 0 |
Deposits, Savings Deposits | 0 | 0 |
Interest-Bearing Domestic Deposit, Demand | 0 | 0 |
Deposits, Money Market Deposits | 0 | 0 |
Brokered CDs, Fair Value | 4,242,670 | 4,447,479 |
Time Deposits | 3,680,914 | 2,868,494 |
Deposits | 7,923,584 | 7,315,973 |
Federal Funds Purchased and Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure | 417,001 | 326,757 |
Bank Term Funding Program Funding, Fair Value Disclosure | 499,960 |  |
Short-term Debt, Fair Value | 916,961 |  |
Federal Home Loan Bank Borrowings, Fair Value Disclosure | 1,916,520 | 1,944,600 |
Long-term Debt, Fair Value | 843,366 | 534,983 |
Long-Term Line of Credit | 2,386 | 2,157 |
Liabilities, Fair Value Disclosure | 11,750,736 | 10,326,755 |
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Foreign Exchange Forward [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Derivative Asset | 4,865 | 2,954 |
Liabilities, Fair Value Disclosure |  |  |
Derivative Liability | 4,579 | 2,746 |
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Commitments [Member] |  |  |
Liabilities, Fair Value Disclosure |  |  |
Derivative Liability | 0 | 0 |
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Interest Rate Lock Commitments [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Derivative Asset | 0 | 0 |
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Designated as Hedging Instrument | Interest Rate Contract |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Derivative Asset | 20,010 | 8,075 |
Liabilities, Fair Value Disclosure |  |  |
Derivative Liability | 91 | 930 |
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Designated as Hedging Instrument | Foreign Exchange Forward [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Derivative Asset | 275 | 632 |
Foreign Currency Contract, Asset, Fair Value Disclosure | 275 | 632 |
Liabilities, Fair Value Disclosure |  |  |
Derivative Liability | 689 | 2,946 |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 689 | 2,946 |
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Not Designated as Hedging Instrument [Member] | Interest Rate Contract |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Derivative Asset | 95,396 | 111,623 |
Liabilities, Fair Value Disclosure |  |  |
Derivative Liability | 142,560 | 195,662 |
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Foreign Currency Contract, Asset, Fair Value Disclosure | 4,865 | 2,954 |
Liabilities, Fair Value Disclosure |  |  |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 4,579 | 2,746 |
Fair Value, Inputs, Level 2 | US Treasury Securities | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Debt Securities, Held-to-Maturity, Fair Value | 0 | 0 |
Fair Value, Inputs, Level 2 | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 81,089 | 91,817 |
Debt Securities, Held-to-Maturity, Fair Value | 1,540,273 | 1,553,984 |
Fair Value, Inputs, Level 2 | Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | US Government Sponsored-Enterprise Insured Loans |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 1,085,414 | 1,120,794 |
Debt Securities, Held-to-Maturity, Fair Value | 778,883 | 804,393 |
Fair Value, Inputs, Level 2 | Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | Government National Mortgage Association (GNMA) [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 2,663,560 | 2,042,675 |
Debt Securities, Held-to-Maturity, Fair Value | 42,979 | 46,170 |
Fair Value, Inputs, Level 2 | Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | Mortgage-backed Securities, Issued by Private Enterprises [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Held-to-Maturity, Fair Value | 282,103 | 289,507 |
Fair Value, Inputs, Level 2 | Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | US Government Sponsored-Enterprise Insured Loans |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
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Debt Securities, Held-to-Maturity, Fair Value | 659,852 | 632,914 |
Fair Value, Inputs, Level 2 | Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | Government National Mortgage Association (GNMA) [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 151,617 | 154,793 |
Debt Securities, Held-to-Maturity, Fair Value | 47,620 | 52,619 |
Fair Value, Inputs, Level 2 | Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
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Fair Value, Inputs, Level 2 | US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 516 | 1,051 |
Fair Value, Inputs, Level 2 | Other Debt Obligations | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 2,997 | 2,950 |
Fair Value, Inputs, Level 2 | Available-for-sale Securities [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 4,115,578 | 3,564,990 |
Fair Value, Inputs, Level 2 | Held-to-maturity Securities [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Held-to-Maturity, Fair Value | 3,351,710 | 3,379,586 |
Fair Value, Inputs, Level 3 |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Equity Securities, FV-NI | 71 | 24,769 | $ 19,225
Loans and Leases Receivable, Net Amount | 29,629,131 | 28,865,124 |
Liabilities, Fair Value Disclosure |  |  |
Noninterest-bearing Domestic Deposit, Demand | 5,857,421 | 6,119,956 |
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Cash and Due from Banks | 0 | 0 |
Interest-bearing Deposits in Banks and Other Financial Institutions | 0 | 0 |
Federal Funds Sold and Securities Borrowed or Purchased under Agreements to Resell, Fair Value Disclosure | 0 | 0 |
Equity Securities, FV-NI | 71 | 24,769 |
FHLB and Federal Reserve Bank stocks | 0 | 0 |
Residential Held-for-sale, Fair Value Disclosure | 0 | 0 |
Loan, Held-for-Sale, Fair Value Disclosure | 0 | 0 |
Loans Receivable, Fair Value Disclosure | 28,606,404 | 27,371,086 |
Life Insurance, Corporate or Bank Owned, Amount | 0 | 0 |
Servicing Asset | 81,977 | 84,390 |
Assets, Fair Value Disclosure | 28,689,273 | 27,480,684 |
Liabilities, Fair Value Disclosure |  |  |
Noninterest-bearing Domestic Deposit, Demand | 5,857,421 | 6,119,956 |
Deposits, Savings Deposits | 5,072,508 | 4,835,701 |
Interest-Bearing Domestic Deposit, Demand | 8,605,578 | 8,843,967 |
Deposits, Money Market Deposits | 6,095,206 | 6,330,453 |
Brokered CDs, Fair Value | 0 | 0 |
Time Deposits | 0 | 0 |
Deposits | 25,630,714 | 26,130,076 |
Federal Funds Purchased and Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure | 0 | 0 |
Bank Term Funding Program Funding, Fair Value Disclosure | 0 |  |
Short-term Debt, Fair Value | 0 |  |
Federal Home Loan Bank Borrowings, Fair Value Disclosure | 0 | 0 |
Long-term Debt, Fair Value | 0 | 0 |
Long-Term Line of Credit | 0 | 0 |
Liabilities, Fair Value Disclosure | 25,631,199 | 26,130,749 |
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Commitments [Member] |  |  |
Liabilities, Fair Value Disclosure |  |  |
Derivative Liability | 485 | 673 |
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Interest Rate Lock Commitments [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Derivative Asset | 822 | 439 |
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Designated as Hedging Instrument | Interest Rate Contract |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Derivative Asset | 0 | 0 |
Liabilities, Fair Value Disclosure |  |  |
Derivative Liability | 0 | 0 |
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Designated as Hedging Instrument | Foreign Exchange Forward [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Foreign Currency Contract, Asset, Fair Value Disclosure | 0 | 0 |
Liabilities, Fair Value Disclosure |  |  |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 0 | 0 |
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Not Designated as Hedging Instrument [Member] | Interest Rate Contract |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Derivative Asset | 0 | 0 |
Liabilities, Fair Value Disclosure |  |  |
Derivative Liability | 0 | 0 |
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Foreign Currency Contract, Asset, Fair Value Disclosure | 0 | 0 |
Liabilities, Fair Value Disclosure |  |  |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 0 | 0 |
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Not Designated as Hedging Instrument [Member] | Interest Rate Lock Commitments [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Derivative Asset | 822 | 439 |
Fair Value, Inputs, Level 3 | US Treasury Securities | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Debt Securities, Held-to-Maturity, Fair Value | 0 | 0 |
Fair Value, Inputs, Level 3 | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Debt Securities, Held-to-Maturity, Fair Value | 0 | 0 |
Fair Value, Inputs, Level 3 | Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | US Government Sponsored-Enterprise Insured Loans |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Debt Securities, Held-to-Maturity, Fair Value | 0 | 0 |
Fair Value, Inputs, Level 3 | Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | Government National Mortgage Association (GNMA) [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Debt Securities, Held-to-Maturity, Fair Value | 0 | 0 |
Fair Value, Inputs, Level 3 | Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | Mortgage-backed Securities, Issued by Private Enterprises [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Held-to-Maturity, Fair Value | 0 | 0 |
Fair Value, Inputs, Level 3 | Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | US Government Sponsored-Enterprise Insured Loans |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Debt Securities, Held-to-Maturity, Fair Value | 0 | 0 |
Fair Value, Inputs, Level 3 | Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring | Government National Mortgage Association (GNMA) [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Debt Securities, Held-to-Maturity, Fair Value | 0 | 0 |
Fair Value, Inputs, Level 3 | Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Fair Value, Inputs, Level 3 | US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Fair Value, Inputs, Level 3 | Other Debt Obligations | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Fair Value, Inputs, Level 3 | Available-for-sale Securities [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Available-for-Sale | 0 | 0 |
Fair Value, Inputs, Level 3 | Held-to-maturity Securities [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Debt Securities, Held-to-Maturity, Fair Value | 0 | 0 |
Fair Value, Inputs, NAV [Member] | Fair Value, Measurements, Recurring |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Equity Securities, FV-NI | $ 12,500 | $ 10,000 |

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- Definition This item represents the amount that could be realized under a life insurance contract or contracts owned by the Entity as of the date of the statement of financial position. Such Entity-owned life insurance policies are commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 325 -SubTopic 30 -Name Accounting Standards Codification -Section 25 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481612/325-30-25-1 + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-10 + Details
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