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Fair Value Measurements, Financial Instruments (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities $ 4,748,101   $ 4,464,161      
Debt Securities, Held-to-maturity, gross 2,476,759   2,739,241      
Investment securities, Allowance for Credit Loss (344) [1]   (558) [2]      
Investment Securities, Amortized Cost, After Allowance for Credit Loss 2,476,415   2,738,683      
Available for sale securities 11,906,647   11,493,860      
Fair value option securities 20,215   296,590      
Residential mortgage loans held for sale 72,489   75,272      
Loans 23,724,018   22,557,150      
Allowance for loan losses (272,114)   (235,704)      
Loans, net of allowance 23,451,904   22,321,446      
Mortgage servicing rights 311,382 $ 304,722 277,608 $ 283,806 $ 270,312 $ 163,198
Derviative contracts, net of cash collateral, Assets, Fair value 546,109   880,343      
Time deposits 2,927,217   1,461,842      
Subordinated debentures 131,152   131,205      
Derivative contracts, net of cash collateral, Liabilities, Fair Value 403,947   554,900      
Commercial [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 14,719,839   14,212,499      
Allowance for loan losses (137,931)   (131,586)      
Commercial real estate [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 5,241,300   4,606,777      
Allowance for loan losses (88,428)   (57,648)      
Loans to individuals [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 3,762,879   3,737,874      
Allowance for loan losses (45,755)   (46,470)      
U.S. government securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 18,843   9,823      
Residential agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 4,653,161   4,406,848      
Debt Securities, Held-to-maturity, gross 2,322,710   2,538,565      
Available for sale securities 6,216,955   5,814,496      
Fair value option securities 20,215   296,590      
Municipal securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 51,998   21,484      
Debt Securities, Held-to-maturity, gross 121,003   170,629      
Available for sale securities 488,269   624,500      
U.S. Treasury [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Available for sale securities 897   898      
Residential non-agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Available for sale securities 715,806   577,576      
Commercial agency mortgage-backed securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Debt Securities, Held-to-maturity, gross 17,258   17,259      
Available for sale securities 4,484,247   4,475,917      
Other debt securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 24,099   26,006      
Debt Securities, Held-to-maturity, gross 15,788   12,788      
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 854,161   943,810      
Interest-bearing cash and cash equivalents 520,774   457,906      
Trading securities 4,748,101   4,464,161      
Debt Securities, Held-to-maturity, gross 2,298,762   2,514,245      
Investment securities, Allowance for Credit Loss (344)   (558)      
Investment Securities, Amortized Cost, After Allowance for Credit Loss 2,298,418   2,513,687      
Available for sale securities 11,906,647   11,493,860      
Residential mortgage loans held for sale 72,489   75,272      
Loans 23,724,018   22,557,150      
Allowance for loan losses (272,114)   (235,704)      
Loans, net of allowance 23,451,904   22,321,446      
Mortgage servicing rights 311,382   277,608      
Derviative contracts, net of cash collateral, Assets, Fair value 546,109   880,343      
Deposits with no stated maturity 30,725,335   33,018,863      
Time deposits 2,927,217   1,461,842      
Other borrowed funds 8,924,642   7,007,285      
Subordinated debentures 131,152   131,205      
Derivative contracts, net of cash collateral, Liabilities, Fair Value 403,947   554,900      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Commercial [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 14,719,839   14,212,499      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Commercial real estate [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 5,241,300   4,606,777      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Loans to individuals [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 3,762,879   3,737,874      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | U.S. government securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 18,843   9,823      
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 4,653,161   4,406,848      
Debt Securities, Held-to-maturity, gross 2,146,133   2,315,219      
Available for sale securities 6,216,955   5,814,496      
Fair value option securities 20,215   296,590      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Municipal securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 51,998   21,484      
Debt Securities, Held-to-maturity, gross 121,003   170,629      
Available for sale securities 488,269   624,500      
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Other trading securities            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 24,099   26,006      
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 897   898      
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 715,806   577,576      
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 15,838   15,609      
Available for sale securities 4,484,247   4,475,917      
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 15,788   12,788      
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 854,161   943,810      
Interest-bearing cash and cash equivalents 520,774   457,906      
Trading securities 4,748,101   4,464,161      
Debt Securities, Held-to-maturity, gross 2,052,367   2,346,768      
Investment securities, Allowance for Credit Loss 0   0      
Investment Securities, Amortized Cost, After Allowance for Credit Loss 2,052,367   2,346,768      
Available for sale securities 11,906,647   11,493,860      
Residential mortgage loans held for sale 72,489   75,272      
Loans 23,210,626   21,891,223      
Allowance for loan losses 0   0      
Loans, net of allowance 23,210,626   21,891,223      
Mortgage servicing rights 311,382   277,608      
Derviative contracts, net of cash collateral, Assets, Fair value 546,109   880,343      
Deposits with no stated maturity 30,725,335   33,018,863      
Time deposits 2,986,307   1,431,245      
Other borrowed funds 8,922,567   7,005,305      
Subordinated debentures 116,911   121,497      
Derivative contracts, net of cash collateral, Liabilities, Fair Value 403,947   554,900      
Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 14,603,075   13,905,765      
Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial real estate [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 5,094,865   4,454,048      
Estimate of Fair Value, Fair Value Disclosure [Member] | Loans to individuals [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Loans 3,512,686   3,531,410      
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 18,843   9,823      
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 4,653,161   4,406,848      
Debt Securities, Held-to-maturity, gross 1,901,143   2,143,360      
Available for sale securities 6,216,955   5,814,496      
Fair value option securities 20,215   296,590      
Estimate of Fair Value, Fair Value Disclosure [Member] | Municipal securities [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 51,998   21,484      
Debt Securities, Held-to-maturity, gross 122,695   176,621      
Available for sale securities 488,269   624,500      
Estimate of Fair Value, Fair Value Disclosure [Member] | Other trading securities            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Trading securities 24,099   26,006      
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 897   898      
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 715,806   577,576      
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 14,371   14,588      
Available for sale securities 4,484,247   4,475,917      
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 14,158   12,199      
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 854,161   943,810      
Interest-bearing cash and cash equivalents 520,774   457,906      
Trading securities 17,932   4,970      
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 897   898      
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 1,596   2,110      
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 190   16      
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 17,932   4,970      
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 897   898      
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 4,730,169   4,459,191      
Debt Securities, Held-to-maturity, gross 1,941,629   2,208,253      
Investment securities, Allowance for Credit Loss 0   0      
Investment Securities, Amortized Cost, After Allowance for Credit Loss 1,941,629   2,208,253      
Available for sale securities 11,905,277   11,492,489      
Residential mortgage loans held for sale 65,179   68,054      
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 544,513   878,233      
Deposits with no stated maturity 0   0      
Time deposits 0   0      
Other borrowed funds 0   0      
Subordinated debentures 116,911   121,497      
Derivative contracts, net of cash collateral, Liabilities, Fair Value 403,757   554,884      
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 911   4,853      
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 4,653,161   4,406,848      
Debt Securities, Held-to-maturity, gross 1,901,143   2,143,360      
Available for sale securities 6,216,955   5,814,496      
Fair value option securities 20,215   296,590      
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 51,998   21,484      
Debt Securities, Held-to-maturity, gross 11,957   38,106      
Available for sale securities 488,269   624,500      
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 24,099   26,006      
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 715,806   577,576      
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 14,371   14,588      
Available for sale securities 4,484,247   4,475,917      
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 14,158   12,199      
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 110,738   138,515      
Investment securities, Allowance for Credit Loss 0   0      
Investment Securities, Amortized Cost, After Allowance for Credit Loss 110,738   138,515      
Available for sale securities 473   473      
Residential mortgage loans held for sale 7,310   7,218      
Loans 23,210,626   21,891,223      
Allowance for loan losses 0   0      
Loans, net of allowance 23,210,626   21,891,223      
Mortgage servicing rights 311,382   277,608      
Derviative contracts, net of cash collateral, Assets, Fair value 0   0      
Deposits with no stated maturity 30,725,335   33,018,863      
Time deposits 2,986,307   1,431,245      
Other borrowed funds 8,922,567   7,005,305      
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 14,603,075   13,905,765      
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 5,094,865   4,454,048      
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 3,512,686   3,531,410      
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 110,738   138,515      
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 $178 million of net unrealized loss which remains in Accumulated other comprehensive income ("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 $225 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.