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Fair Value Measurements, Financial Instruments (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities $ 5,212,791   $ 5,193,505      
Debt Securities, Held-to-maturity, gross 2,269,560   2,409,090      
Investment securities, Allowance for Credit Loss (287) [1]   (336) [2]      
Investment Securities, Amortized Cost, After Allowance for Credit Loss 2,269,273   2,408,754      
Available for sale securities 12,793,784   12,286,681      
Fair value option securities 19,050   20,671      
Residential mortgage loans held for sale 107,465   56,935      
Loans 24,553,581   23,904,968      
Allowance for loan losses (287,826)   (277,123)      
Loans, net of allowance 24,265,755   23,627,845      
Mortgage servicing rights 333,246 $ 319,330 293,884 $ 304,722 $ 299,803 $ 277,608
Derviative contracts, net of cash collateral, Assets, Fair value 225,076   410,304      
Time deposits 3,463,935   3,012,022      
Subordinated debentures 131,156   131,150      
Derivative contracts, net of cash collateral, Liabilities, Fair Value 287,509   587,473      
Commercial [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 15,623,409   14,803,769      
Allowance for loan losses (150,737)   (141,232)      
Commercial real estate [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 5,083,575   5,337,647      
Allowance for loan losses (96,256)   (94,718)      
Loans to individuals [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 3,846,597   3,763,552      
Allowance for loan losses (40,833)   (41,173)      
U.S. government securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 71,169   10,959      
Residential agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 5,023,892   5,105,137      
Debt Securities, Held-to-maturity, gross 2,129,826   2,255,340      
Available for sale securities 8,108,567   6,834,720      
Fair value option securities 19,050   20,671      
Municipal securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 56,780   37,413      
Debt Securities, Held-to-maturity, gross 107,188   120,705      
Available for sale securities 278,043   502,833      
U.S. Treasury [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Available for sale securities 923   925      
Residential non-agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Available for sale securities 828,049   799,877      
Commercial agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Debt Securities, Held-to-maturity, gross 17,258   17,258      
Available for sale securities 3,577,729   4,147,853      
Other debt securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 60,950   39,996      
Debt Securities, Held-to-maturity, gross 15,288   15,787      
Available for sale securities 473   473      
Carrying (Reported) Amount, Fair Value Disclosure [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Cash and due from banks 897,811   947,613      
Interest-bearing cash and cash equivalents 178,352   400,652      
Trading securities 5,212,791   5,193,505      
Debt Securities, Held-to-maturity, gross 2,129,168   2,244,489      
Investment securities, Allowance for Credit Loss (287)   (336)      
Investment Securities, Amortized Cost, After Allowance for Credit Loss 2,128,881   2,244,153      
Available for sale securities 12,793,784   12,286,681      
Residential mortgage loans held for sale 107,465   56,935      
Loans 24,553,581   23,904,968      
Allowance for loan losses (287,826)   (277,123)      
Loans, net of allowance 24,265,755   23,627,845      
Mortgage servicing rights 333,246   293,884      
Derviative contracts, net of cash collateral, Assets, Fair value 225,076   410,304      
Deposits with no stated maturity 32,777,709   31,007,679      
Time deposits 3,463,935   3,012,022      
Other borrowed funds 7,342,296   8,824,300      
Subordinated debentures 131,156   131,150      
Derivative contracts, net of cash collateral, Liabilities, Fair Value 287,509   587,473      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Commercial [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 15,623,409   14,803,769      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Commercial real estate [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 5,083,575   5,337,647      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Loans to individuals [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 3,846,597   3,763,552      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | U.S. government securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 71,169   10,959      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Residential agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 5,023,892   5,105,137      
Debt Securities, Held-to-maturity, gross 1,990,626   2,092,083      
Available for sale securities 8,108,567   6,834,720      
Fair value option securities 19,050   20,671      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Municipal securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 56,780   37,413      
Debt Securities, Held-to-maturity, gross 107,188   120,705      
Available for sale securities 278,043   502,833      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Other trading securities            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 60,950   39,996      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | U.S. Treasury [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Available for sale securities 923   925      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Residential non-agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Available for sale securities 828,049   799,877      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Commercial agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Debt Securities, Held-to-maturity, gross 16,066   15,914      
Available for sale securities 3,577,729   4,147,853      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Other debt securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Debt Securities, Held-to-maturity, gross 15,288   15,787      
Available for sale securities 473   473      
Estimate of Fair Value, Fair Value Disclosure [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Cash and due from banks 897,811   947,613      
Interest-bearing cash and cash equivalents 178,352   400,652      
Trading securities 5,212,791   5,193,505      
Debt Securities, Held-to-maturity, gross 1,924,532   2,072,586      
Investment securities, Allowance for Credit Loss 0   0      
Investment Securities, Amortized Cost, After Allowance for Credit Loss 1,924,532   2,072,586      
Available for sale securities 12,793,784   12,286,681      
Residential mortgage loans held for sale 107,465   56,935      
Loans 24,295,523   23,768,385      
Allowance for loan losses 0   0      
Loans, net of allowance 24,295,523   23,768,385      
Mortgage servicing rights 333,246   293,884      
Derviative contracts, net of cash collateral, Assets, Fair value 225,076   410,304      
Deposits with no stated maturity 32,777,709   31,007,679      
Time deposits 3,439,777   2,993,685      
Other borrowed funds 7,342,295   8,824,299      
Subordinated debentures 119,428   115,798      
Derivative contracts, net of cash collateral, Liabilities, Fair Value 287,509   587,473      
Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 15,594,663   14,862,873      
Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial real estate [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 4,988,792   5,270,657      
Estimate of Fair Value, Fair Value Disclosure [Member] | Loans to individuals [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 3,712,068   3,634,855      
Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. government securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 71,169   10,959      
Estimate of Fair Value, Fair Value Disclosure [Member] | Residential agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 5,023,892   5,105,137      
Debt Securities, Held-to-maturity, gross 1,786,096   1,917,810      
Available for sale securities 8,108,567   6,834,720      
Fair value option securities 19,050   20,671      
Estimate of Fair Value, Fair Value Disclosure [Member] | Municipal securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 56,780   37,413      
Debt Securities, Held-to-maturity, gross 109,700   125,525      
Available for sale securities 278,043   502,833      
Estimate of Fair Value, Fair Value Disclosure [Member] | Other trading securities            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 60,950   39,996      
Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. Treasury [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Available for sale securities 923   925      
Estimate of Fair Value, Fair Value Disclosure [Member] | Residential non-agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Available for sale securities 828,049   799,877      
Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Debt Securities, Held-to-maturity, gross 15,030   15,067      
Available for sale securities 3,577,729   4,147,853      
Estimate of Fair Value, Fair Value Disclosure [Member] | Other debt securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Debt Securities, Held-to-maturity, gross 13,706   14,184      
Available for sale securities 473   473      
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Cash and due from banks 897,811   947,613      
Interest-bearing cash and cash equivalents 178,352   400,652      
Trading securities 69,955   9,017      
Debt Securities, Held-to-maturity, gross 0   0      
Investment securities, Allowance for Credit Loss 0   0      
Investment Securities, Amortized Cost, After Allowance for Credit Loss 0   0      
Available for sale securities 923   925      
Residential mortgage loans held for sale 0   0      
Loans 0   0      
Allowance for loan losses 0   0      
Loans, net of allowance 0   0      
Mortgage servicing rights 0   0      
Derviative contracts, net of cash collateral, Assets, Fair value 3,699   0      
Deposits with no stated maturity 0   0      
Time deposits 0   0      
Other borrowed funds 0   0      
Subordinated debentures 0   0      
Derivative contracts, net of cash collateral, Liabilities, Fair Value 658   2,607      
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 0   0      
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial real estate [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 0   0      
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Loans to individuals [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 0   0      
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. government securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 69,955   9,017      
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 0   0      
Debt Securities, Held-to-maturity, gross 0   0      
Available for sale securities 0   0      
Fair value option securities 0   0      
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Municipal securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 0   0      
Debt Securities, Held-to-maturity, gross 0   0      
Available for sale securities 0   0      
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other trading securities            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 0   0      
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. Treasury [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Available for sale securities 923   925      
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential non-agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Available for sale securities 0   0      
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Debt Securities, Held-to-maturity, gross 0   0      
Available for sale securities 0   0      
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other debt securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Debt Securities, Held-to-maturity, gross 0   0      
Available for sale securities 0   0      
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Cash and due from banks 0   0      
Interest-bearing cash and cash equivalents 0   0      
Trading securities 5,142,836   5,184,488      
Debt Securities, Held-to-maturity, gross 1,826,821   1,959,366      
Investment securities, Allowance for Credit Loss 0   0      
Investment Securities, Amortized Cost, After Allowance for Credit Loss 1,826,821   1,959,366      
Available for sale securities 12,792,388   12,285,283      
Residential mortgage loans held for sale 100,364   49,749      
Loans 0   0      
Allowance for loan losses 0   0      
Loans, net of allowance 0   0      
Mortgage servicing rights 0   0      
Derviative contracts, net of cash collateral, Assets, Fair value 221,377   410,304      
Deposits with no stated maturity 32,777,709   0      
Time deposits 0   0      
Other borrowed funds 0   0      
Subordinated debentures 119,428   115,798      
Derivative contracts, net of cash collateral, Liabilities, Fair Value 286,851   584,866      
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 0   0      
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial real estate [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 0   0      
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Loans to individuals [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 0   0      
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. government securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 1,214   1,942      
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 5,023,892   5,105,137      
Debt Securities, Held-to-maturity, gross 1,786,096   1,917,810      
Available for sale securities 8,108,567   6,834,720      
Fair value option securities 19,050   20,671      
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Municipal securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 56,780   37,413      
Debt Securities, Held-to-maturity, gross 11,989   12,305      
Available for sale securities 278,043   502,833      
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other trading securities            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 60,950   39,996      
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. Treasury [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Available for sale securities 0   0      
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential non-agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Available for sale securities 828,049   799,877      
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Debt Securities, Held-to-maturity, gross 15,030   15,067      
Available for sale securities 3,577,729   4,147,853      
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other debt securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Debt Securities, Held-to-maturity, gross 13,706   14,184      
Available for sale securities 0   0      
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Cash and due from banks 0   0      
Interest-bearing cash and cash equivalents 0   0      
Trading securities 0   0      
Debt Securities, Held-to-maturity, gross 97,711   113,220      
Investment securities, Allowance for Credit Loss 0   0      
Investment Securities, Amortized Cost, After Allowance for Credit Loss 97,711   113,220      
Available for sale securities 473   473      
Residential mortgage loans held for sale 7,101   7,186      
Loans 24,295,523   23,768,385      
Allowance for loan losses 0   0      
Loans, net of allowance 24,295,523   23,768,385      
Mortgage servicing rights 333,246   293,884      
Derviative contracts, net of cash collateral, Assets, Fair value 0   0      
Deposits with no stated maturity 0   31,007,679      
Time deposits 3,439,777   2,993,685      
Other borrowed funds 7,342,295   8,824,299      
Subordinated debentures 0   0      
Derivative contracts, net of cash collateral, Liabilities, Fair Value 0   0      
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 15,594,663   14,862,873      
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial real estate [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 4,988,792   5,270,657      
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Loans to individuals [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 3,712,068   3,634,855      
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. government securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 0   0      
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 0   0      
Debt Securities, Held-to-maturity, gross 0   0      
Available for sale securities 0   0      
Fair value option securities 0   0      
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Municipal securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 0   0      
Debt Securities, Held-to-maturity, gross 97,711   113,220      
Available for sale securities 0   0      
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other trading securities            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 0   0      
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. Treasury [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Available for sale securities 0   0      
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential non-agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Available for sale securities 0   0      
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Debt Securities, Held-to-maturity, gross 0   0      
Available for sale securities 0   0      
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other debt securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Debt Securities, Held-to-maturity, gross 0   0      
Available for sale securities $ 473   $ 473      
[1] Carrying value includes $140 million of net unrealized loss which remains in AOCI in the Consolidated Balance Sheets related to certain securities transferred during the second quarter of 2022 from the Available for Sale securities portfolio to the Investment securities portfolio.
[2] Carrying value includes $165 million of net unrealized loss which remains in AOCI in the Consolidated Balance Sheets related to certain securities transferred during the second quarter of 2022 from the Available for Sale securities portfolio to the Investment securities portfolio.