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Fair Value Measurements, Financial Instruments (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities $ 4,899,090 $ 5,193,505    
Investment securities 2,136,029 2,409,090    
Debt Securities, Held-to-maturity, Allowance for Credit Loss (223) [1] (336) [2]    
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss 2,135,806 2,408,754    
Available for sale securities 12,851,600 12,286,681    
Fair value option securities 17,876 20,671    
Residential mortgage loans held for sale 77,561 56,935    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 24,114,724 23,904,968    
Allowance for loan losses (280,035) (277,123) $ (235,704) $ (256,421)
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 23,834,689 23,627,845    
Mortgage servicing rights 338,145 293,884 277,608 163,198
Derivative contracts, net of cash margin, Assets, Fair Value 242,809 410,304    
Time deposits 3,535,410 3,012,022    
Subordinated debentures 131,200 131,150    
Derivative contracts, net of cash margin, Liabilities, Fair Value 237,582 587,473    
Commercial [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 15,030,136 14,803,769    
Allowance for loan losses (145,153) (141,232) (131,586) (162,056)
Commercial real estate [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 5,058,452 5,337,647    
Allowance for loan losses (91,072) (94,718) (57,648) (58,553)
Loans to individuals [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 4,026,136 3,763,552    
Allowance for loan losses (43,810) (41,173) $ (46,470) $ (35,812)
U.S. government securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 21,275 10,959    
Residential agency mortgage-backed securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 4,792,695 5,105,137    
Investment securities 1,998,017 2,255,340    
Available for sale securities 8,639,389 6,834,720    
Fair value option securities 17,876 20,671    
Municipal securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 62,230 37,413    
Investment securities 104,467 120,705    
Available for sale securities 225,568 502,833    
U.S. Treasury [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Available for sale securities 945 925    
Residential non-agency mortgage-backed securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Available for sale securities 781,209 799,877    
Commercial agency mortgage-backed securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Investment securities 17,257 17,258    
Available for sale securities 3,204,016 4,147,853    
Other debt securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 22,890 39,996    
Investment securities 16,288 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 1,043,969 947,613    
Interest-bearing cash and cash equivalents 390,732 400,652    
Trading securities 4,899,090 5,193,505    
Investment securities 2,017,448 2,244,489    
Debt Securities, Held-to-maturity, Allowance for Credit Loss (223) (336)    
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss 2,017,225 2,244,153    
Available for sale securities 12,851,600 12,286,681    
Fair value option securities 17,876 20,671    
Residential mortgage loans held for sale 77,561 56,935    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 24,114,724 23,904,968    
Allowance for loan losses (280,035) (277,123)    
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 23,834,689 23,627,845    
Mortgage servicing rights 338,145 293,884    
Derivative contracts, net of cash margin, Assets, Fair Value 242,809 410,304    
Deposits with no stated maturity 34,655,820 31,007,679    
Time deposits 3,535,410 3,012,022    
Other borrowed funds 4,322,979 8,824,300    
Subordinated debentures 131,200 131,150    
Derivative contracts, net of cash margin, Liabilities, Fair Value 237,582 587,473    
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Commercial [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 15,030,136 14,803,769    
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Commercial real estate [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 5,058,452 5,337,647    
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Loans to individuals [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 4,026,136 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 21,275 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 4,792,695 5,105,137    
Investment securities 1,880,473 2,092,083    
Available for sale securities 8,639,389 6,834,720    
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Municipal securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 62,230 37,413    
Investment securities 104,467 120,705    
Available for sale securities 225,568 502,833    
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Other trading securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 22,890 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 945 925    
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 781,209 799,877    
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Commercial agency mortgage-backed securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Investment securities 16,220 15,914    
Available for sale securities 3,204,016 4,147,853    
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Other debt securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Investment securities 16,288 15,787    
Available for sale securities 473 473    
Estimate of Fair Value Measurement [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Cash and due from banks 1,043,969 947,613    
Interest-bearing cash and cash equivalents 390,732 400,652    
Trading securities 4,899,090 5,193,505    
Investment securities 1,817,929 2,072,586    
Debt Securities, Held-to-maturity, Allowance for Credit Loss 0 0    
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss 1,817,929 2,072,586    
Available for sale securities 12,851,600 12,286,681    
Fair value option securities 17,876 20,671    
Residential mortgage loans held for sale 77,561 56,935    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 23,709,546 23,768,385    
Allowance for loan losses 0 0    
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 23,709,546 23,768,385    
Mortgage servicing rights 338,145 293,884    
Derivative contracts, net of cash margin, Assets, Fair Value 242,809 410,304    
Deposits with no stated maturity 34,655,820 31,007,679    
Time deposits 3,522,242 2,993,685    
Other borrowed funds 4,323,174 8,824,299    
Subordinated debentures 121,057 115,798    
Derivative contracts, net of cash margin, Liabilities, Fair Value 237,582 587,473    
Estimate of Fair Value Measurement [Member] | Commercial [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 14,903,851 14,862,873    
Estimate of Fair Value Measurement [Member] | Commercial real estate [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 4,933,396 5,270,657    
Estimate of Fair Value Measurement [Member] | Loans to individuals [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,872,299 3,634,855    
Estimate of Fair Value Measurement [Member] | U.S. government securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 21,275 10,959    
Estimate of Fair Value Measurement [Member] | Residential agency mortgage-backed securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 4,792,695 5,105,137    
Investment securities 1,680,800 1,917,810    
Available for sale securities 8,639,389 6,834,720    
Estimate of Fair Value Measurement [Member] | Municipal securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 62,230 37,413    
Investment securities 106,489 125,525    
Available for sale securities 225,568 502,833    
Estimate of Fair Value Measurement [Member] | Other trading securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 22,890 39,996    
Estimate of Fair Value Measurement [Member] | U.S. Treasury [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Available for sale securities 945 925    
Estimate of Fair Value Measurement [Member] | Residential non-agency mortgage-backed securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Available for sale securities 781,209 799,877    
Estimate of Fair Value Measurement [Member] | Commercial agency mortgage-backed securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Investment securities 15,357 15,067    
Available for sale securities 3,204,016 4,147,853    
Estimate of Fair Value Measurement [Member] | Other debt securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Investment securities 15,283 14,184    
Available for sale securities 473 473    
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Cash and due from banks 1,043,969 947,613    
Interest-bearing cash and cash equivalents 390,732 400,652    
Trading securities 1,494 9,017    
Investment securities 0 0    
Debt Securities, Held-to-maturity, Allowance for Credit Loss 0 0    
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss 0 0    
Available for sale securities 945 925    
Fair value option securities 0 0    
Residential mortgage loans held for sale 0 0    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Allowance for loan losses 0 0    
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 0 0    
Mortgage servicing rights 0 0    
Derivative contracts, net of cash margin, Assets, Fair Value 656 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 margin, Liabilities, Fair Value 3,391 2,607    
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Commercial [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Commercial real estate [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Loans to individuals [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | U.S. government securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 1,494 9,017    
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Residential agency mortgage-backed securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 0 0    
Investment securities 0 0    
Available for sale securities 0 0    
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Municipal securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 0 0    
Investment securities 0 0    
Available for sale securities 0 0    
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Other trading securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 0 0    
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | U.S. Treasury [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Available for sale securities 945 925    
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [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 Measurement [Member] | Commercial agency mortgage-backed securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Investment securities 0 0    
Available for sale securities 0 0    
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Other debt securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Investment securities 0 0    
Available for sale securities 0 0    
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [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 4,897,596 5,184,488    
Investment securities 1,723,114 1,959,366    
Debt Securities, Held-to-maturity, Allowance for Credit Loss 0 0    
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss 1,723,114 1,959,366    
Available for sale securities 12,850,182 12,285,283    
Fair value option securities 17,876 20,671    
Residential mortgage loans held for sale 70,564 49,749    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Allowance for loan losses 0 0    
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 0 0    
Mortgage servicing rights 0 0    
Derivative contracts, net of cash margin, Assets, Fair Value 242,153 410,304    
Deposits with no stated maturity 0 0    
Time deposits 0 0    
Other borrowed funds 0 0    
Subordinated debentures 121,057 115,798    
Derivative contracts, net of cash margin, Liabilities, Fair Value 234,191 584,866    
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Commercial [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Commercial real estate [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Loans to individuals [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 0 0    
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | U.S. government securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 19,781 1,942    
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Residential agency mortgage-backed securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 4,792,695 5,105,137    
Investment securities 1,680,800 1,917,810    
Available for sale securities 8,639,389 6,834,720    
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Municipal securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 62,230 37,413    
Investment securities 11,674 12,305    
Available for sale securities 225,568 502,833    
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Other trading securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 22,890 39,996    
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [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 Measurement [Member] | Residential non-agency mortgage-backed securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Available for sale securities 781,209 799,877    
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Commercial agency mortgage-backed securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Investment securities 15,357 15,067    
Available for sale securities 3,204,016 4,147,853    
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Other debt securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Investment securities 15,283 14,184    
Available for sale securities 0 0    
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [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    
Investment securities 94,815 113,220    
Debt Securities, Held-to-maturity, Allowance for Credit Loss 0 0    
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss 94,815 113,220    
Available for sale securities 473 473    
Fair value option securities 0 0    
Residential mortgage loans held for sale 6,997 7,186    
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 23,709,546 23,768,385    
Allowance for loan losses 0 0    
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 23,709,546 23,768,385    
Mortgage servicing rights 338,145 293,884    
Derivative contracts, net of cash margin, Assets, Fair Value 0 0    
Deposits with no stated maturity 34,655,820 31,007,679    
Time deposits 3,522,242 2,993,685    
Other borrowed funds 4,323,174 8,824,299    
Subordinated debentures 0 0    
Derivative contracts, net of cash margin, Liabilities, Fair Value 0 0    
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member] | Commercial [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 14,903,851 14,862,873    
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member] | Commercial real estate [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 4,933,396 5,270,657    
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member] | Loans to individuals [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,872,299 3,634,855    
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [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 Measurement [Member] | Residential agency mortgage-backed securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 0 0    
Investment securities 0 0    
Available for sale securities 0 0    
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member] | Municipal securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Trading securities 0 0    
Investment securities 94,815 113,220    
Available for sale securities 0 0    
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member] | Other trading 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 Measurement [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 Measurement [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 Measurement [Member] | Commercial agency mortgage-backed securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Investment securities 0 0    
Available for sale securities 0 0    
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member] | Other debt securities [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Investment securities 0 0    
Available for sale securities $ 473 $ 473    
[1] Carrying value includes $119 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.