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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2020
Fair Value Disclosures [Abstract] |
Fair Value Assets And Liabilities Measured On A Recurring Basis [Table Text Block] | The fair value of financial assets and liabilities measured on a recurring basis was as follows as of June 30, 2020 (in thousands):
|  | Total |  | Quoted Prices in Active Markets for Identical Instruments (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Assets: |  |  |  |  |  |  |  |
Trading securities: |  |  |  |  |  |  |  |
U.S. government agency debentures |  | $ | 4,237 |  |  | $ | — |  |  | $ | 4,237 |  |  | $ | — |
Residential agency mortgage-backed securities |  | 1,146,454 |  |  | — |  |  | 1,146,454 |  |  | — |
Municipal and other tax-exempt securities |  | 22,710 |  |  | — |  |  | 22,710 |  |  | — |
Asset-backed securities |  | 5 |  |  | — |  |  | 5 |  |  | — |
Other trading securities |  | 22,699 |  |  | — |  |  | 22,699 |  |  | — |
Total trading securities |  | 1,196,105 |  |  | — |  |  | 1,196,105 |  |  | — |
Available for sale securities: |  |  |  |  |  |  |  |
U.S. Treasury |  | 912 |  |  | 912 |  |  | — |  |  | — |
Municipal and other tax-exempt securities |  | 31,240 |  |  | — |  |  | 31,240 |  |  | — |
Residential agency mortgage-backed securities |  | 9,147,238 |  |  | — |  |  | 9,147,238 |  |  | — |
Residential non-agency mortgage-backed securities |  | 35,250 |  |  | — |  |  | 35,250 |  |  | — |
Commercial agency mortgage-backed securities |  | 3,260,807 |  |  | — |  |  | 3,260,807 |  |  | — |
Other debt securities |  | 472 |  |  | — |  |  | — |  |  | 472 |
Total available for sale securities |  | 12,475,919 |  |  | 912 |  |  | 12,474,535 |  |  | 472 |
Fair value option securities: |  |  |  |  |  |  |  |
U.S. Treasury |  | 92,742 |  |  | 92,742 |  |  | — |  |  | — |
Residential agency mortgage-backed securities |  | 629,915 |  |  | — |  |  | 629,915 |  |  | — |
Total fair value option securities |  | 722,657 |  |  | 92,742 |  |  | 629,915 |  |  | — |
Residential mortgage loans held for sale |  | 319,357 |  |  | — |  |  | 309,672 |  |  | 9,685 |
Mortgage servicing rights1 |  | 97,971 |  |  | — |  |  | — |  |  | 97,971 |
Derivative contracts, net of cash collateral2 |  | 651,553 |  |  | 66,207 |  |  | 585,346 |  |  | — |
Liabilities: |  |  |  |  |  |  |  |
Derivative contracts, net of cash collateral2 |  | 610,020 |  |  | — |  |  | 610,020 |  |  | — |
1A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities. 2See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts in asset positions that were valued based on quoted prices in active markets for identical instruments (Level 1) are primarily exchange-traded energy and interest rate derivative contacts, net of cash margin. Derivative contacts in liability positions that were valued using quoted prices in active markets for identical instruments are exchange-traded interest rate and agricultural derivative contracts, fully offset by cash margin. The fair value of financial assets and liabilities measured on a recurring basis was as follows as of December 31, 2019 (in thousands):
|  | Total |  | Quoted Prices in Active Markets for Identical Instruments (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Assets: |  |  |  |  |  |  |  |
Trading securities: |  |  |  |  |  |  |  |
U.S. government agency debentures |  | $ | 44,264 |  |  | $ | — |  |  | $ | 44,264 |  |  | $ | — |
Residential agency mortgage-backed securities |  | 1,504,651 |  |  | — |  |  | 1,504,651 |  |  | — |
Municipal and other tax-exempt securities |  | 26,196 |  |  | — |  |  | 26,196 |  |  | — |
Asset-backed securities |  | 14,084 |  |  | — |  |  | 14,084 |  |  | — |
Other trading securities |  | 34,726 |  |  | — |  |  | 34,726 |  |  | — |
Total trading securities |  | 1,623,921 |  |  | — |  |  | 1,623,921 |  |  | — |
Available for sale securities: |  |  |  |  |  |  |  |
U.S. Treasury |  | 1,600 |  |  | 1,600 |  |  | — |  |  | — |
Municipal and other tax-exempt securities |  | 1,861 |  |  | — |  |  | 1,861 |  |  | — |
Residential agency mortgage-backed securities |  | 8,046,096 |  |  | — |  |  | 8,046,096 |  |  | — |
Residential non-agency mortgage-backed securities |  | 41,609 |  |  | — |  |  | 41,609 |  |  | — |
Commercial agency mortgage-backed securities |  | 3,178,005 |  |  | — |  |  | 3,178,005 |  |  | — |
Other debt securities |  | 472 |  |  | — |  |  | — |  |  | 472 |
Total available for sale securities |  | 11,269,643 |  |  | 1,600 |  |  | 11,267,571 |  |  | 472 |
Fair value option securities: |  |  |  |  |  |  |  |
U.S. Treasury |  | 9,917 |  |  | 9,917 |  |  | — |  |  | — |
Residential agency mortgage-backed securities |  | 1,088,660 |  |  | — |  |  | 1,088,660 |  |  | — |
Total fair value option securities |  | 1,098,577 |  |  | 9,917 |  |  | 1,088,660 |  |  | — |
Residential mortgage loans held for sale |  | 182,271 |  |  | — |  |  | 173,958 |  |  | 8,313 |
Mortgage servicing rights1 |  | 201,886 |  |  | — |  |  | — |  |  | 201,886 |
Derivative contracts, net of cash collateral2 |  | 323,375 |  |  | 8,944 |  |  | 314,431 |  |  | — |
Liabilities: |  |  |  |  |  |  |  |
Derivative contracts, net of cash collateral2 |  | 251,128 |  |  | — |  |  | 251,128 |  |  | — |
1A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities. 2See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts based on quoted prices in active markets for identical instruments (Level 1) are exchange-traded interest rate and energy derivative contacts, net of cash margin. Derivative contracts in liability positions that were valued using quoted prices in active markets for identical instruments (Level 1) are exchange-traded interest rate and agricultural contracts, fully offset by cash margin.
Fair Value Assets Measured On Recurring Basis, Significant Unobservable Inputs [Table Text Block] | The following represents the changes for the three and six months ended June 30, 2020 related to assets measured at fair value on a recurring basis using significant unobservable inputs (in thousands):
|  |  |  | Available for sale - Other debt securities |  | Residential mortgage loans held for sale
Balance, Mar. 31, 2020 |  |  |  | $ | 472 |  |  | $ | 9,574 |
Transfer to Level 3 from Level 21 |  |  |  | — |  |  | 1,328 |
Purchases |  |  |  | — |  |  | — |
Proceeds from sales |  |  |  | — |  |  | (648) |
Redemptions and distributions |  |  |  | — |  |  | — |
Gain (loss) recognized in earnings: |  |  |  |  |  |
Mortgage banking revenue |  |  |  | — |  |  | (569) |
Other comprehensive income (loss): |  |  |  |  |  |
Net change in unrealized gain (loss) |  |  |  | — |  |  | — |
Balance, June 30, 2020 |  |  |  | $ | 472 |  |  | $ | 9,685 |
1 Recurring transfers to Level 3 from Level 2 consist of residential mortgage loans intended for sale to U.S. government agencies that fail to meet conforming standards.
|  |  |  | Available for sale - Other debt securities |  | Residential mortgage loans held for sale
Balance, December 31, 2019 |  |  |  | $ | 472 |  |  | $ | 8,313 |
Transfer to Level 3 from Level 21 |  |  |  | — |  |  | 3,592 |
Purchases |  |  |  | — |  |  | — |
Proceeds from sales |  |  |  | — |  |  | (1,588) |
Redemptions and distributions |  |  |  | — |  |  | — |
Gain (loss) recognized in earnings: |  |  |  |  |  |
Mortgage banking revenue |  |  |  | — |  |  | (632) |
Other comprehensive income (loss): |  |  |  |  |  |
Net change in unrealized gain (loss) |  |  |  | — |  |  | — |
Balance, June 30, 2020 |  |  |  | $ | 472 |  |  | $ | 9,685 |
1 Recurring transfers to Level 3 from Level 2 consist of residential mortgage loans intended for sale to U.S. government agencies that fail to meet conforming standards. The following represents the changes for the three and six months ended June 30, 2019 related to assets measured at fair value on a recurring basis using significant unobservable inputs (in thousands):
|  |  |  | Available for sale - Other debt securities |  | Residential mortgage loans held for sale
Balance, Mar. 31, 2019 |  |  |  | $ | 472 |  |  | $ | 15,776 |
Transfer to Level 3 from Level 21 |  |  |  | — |  |  | 907 |
Purchases |  |  |  | — |  |  | — |
Proceeds from sales |  |  |  | — |  |  | (998) |
Redemptions and distributions |  |  |  | — |  |  | — |
Gain (loss) recognized in earnings: |  |  |  |  |  |
Mortgage banking revenue |  |  |  | — |  |  | 388 |
Other comprehensive income (loss): |  |  |  |  |  |
Net change in unrealized gain (loss) |  |  |  | — |  |  | — |
Balance, June 30, 2019 |  |  |  | $ | 472 |  |  | $ | 16,073 |
1 Recurring transfers to Level 3 from Level 2 consist of residential mortgage loans intended for sale to U.S. government agencies that fail to meet conforming standards.
|  |  |  | Available for sale - Other debt securities |  | Residential mortgage loans held for sale
Balance, Dec. 31, 2018 |  |  |  | $ | 472 |  |  | $ | 15,207 |
Transfer to Level 3 from Level 21 |  |  |  | — |  |  | 1,889 |
Purchases |  |  |  | — |  |  | — |
Proceeds from sales |  |  |  | — |  |  | (1,379) |
Redemptions and distributions |  |  |  | — |  |  | — |
Gain (loss) recognized in earnings |  |  |  |  |  |
Mortgage banking revenue |  |  |  | — |  |  | 356 |
Other comprehensive income (loss): |  |  |  |  |  |
Net change in unrealized gain (loss) |  |  |  | — |  |  | — |
Balance, June 30, 2019 |  |  |  | $ | 472 |  |  | $ | 16,073 |
Fair Value Inputs, Fair Value Measured On a Recurring Basis, Quantitative Information [Table Text Block] | A summary of quantitative information about assets measured at fair value on a recurring basis using Significant Unobservable Inputs (Level 3) as of June 30, 2020 follows (in thousands):
|  |  |  |  |  | Fair Value |  | Valuation Technique(s) |  | Unobservable Input |  | Range (Weighted Average) |
Available for sale securities – Other debt securities |  |  |  |  |  | $ | 472 |  |  | Discounted cash flows | 1 | Interest rate spread |  | 5.23%-5.23% (5.23%) | 3
|  |  |  |  |  |  |  |  |  |  |  | 94.30%-94.30% (94.30%) | 2
Residential mortgage loans held for sale |  |  |  |  |  | 9,685 |  |  | Quoted prices of loans sold in securitization transactions, with a liquidity discount applied |  | Liquidity discount applied to the market value of mortgage loans qualifying for sale to U.S. government agencies. |  | 90.24% |
1Discounted cash flows developed using discount rates primarily based on reference to interest rate spreads for comparable securities of similar duration and credit rating as determined by the nationally-recognized rating agencies, adjusted for lack of trading volume. 2Represents fair value as a percentage of par value. 3Interest rate yields used to value investment grade taxable securities based on comparable short-term taxable securities which are generally yielding approximately 1 percent. A summary of quantitative information about assets measured at fair value on a recurring basis using Significant Unobservable Inputs (Level 3) as of December 31, 2019 follows (in thousands):
|  |  |  |  |  | Fair Value |  | Valuation Technique(s) |  | Unobservable Input |  | Range (Weighted Average) |
Available for sale securities – Other debt securities |  |  |  |  |  | $ | 472 |  |  | Discounted cash flows | 1 | Interest rate spread |  | 7.08%-7.08% (7.08%) | 3
|  |  |  |  |  |  |  |  |  |  |  | 94.40%-94.40% (94.40%) | 2
Residential mortgage loans held for sale |  |  |  |  |  | 8,313 |  |  | Quoted prices of loans sold in securitization transactions, with a liquidity discount applied |  | Liquidity discount applied to the market value of mortgage loans qualifying for sale to U.S. government agencies. |  | 95.23% |
1Discounted cash flows developed using discount rates primarily based on reference to interest rate spreads for comparable securities of similar duration and credit rating as determined by the nationally-recognized rating agencies, adjusted for lack of trading volume 2Represents fair value as a percentage of par value. 3Interest rate yields used to value investment grade taxable securities based on comparable short-term taxable securities which are generally yielding less than 3 percent.
Fair Value Assets Measured on Nonrecurring Basis [Table Text Block] | The following represents the carrying value of assets measured at fair value on a non-recurring basis (and related losses) during the period. The carrying value represents only those assets with a balance at June 30, 2020 for which the fair value was adjusted during the six months ended June 30, 2020:
|  |  |  |  |  |  | Fair Value Adjustments for the |  |  |  |  |  |
| Carrying Value at June 30, 2020 |  |  |  |  |  | Three Months Ended June 30, 2020 Recognized in: |  |  |  | Six Months Ended June 30, 2020 Recognized in: |  |
| Quoted Prices in Active Markets for Identical Instruments |  | Significant Other Observable Inputs |  | Significant Unobservable Inputs |  | Gross charge-offs against allowance for loan losses |  | Net losses and operating expenses of repossessed assets |  | Gross charge-offs against allowance for loan losses |  | Net losses (gains) and operating expenses of repossessed assets
Nonaccruing loans | $ | — |  |  | $ | 400 |  |  | $ | 32,448 |  |  | $ | 13,871 |  |  | $ | — |  |  | $ | 29,659 |  |  | $ | — |
Real estate and other repossessed assets | — |  |  | 918 |  |  | 400 |  |  | — |  |  | 5 |  |  | — |  |  | 131 |
The following represents the carrying value of assets measured at fair value on a non-recurring basis (and related losses) during the period. The carrying value represents only those assets with a balance at June 30, 2019 for which the fair value was adjusted during the six months ended June 30, 2019:
|  |  |  |  |  |  | Fair Value Adjustments for the |  |  |  |  |  |
| Carrying Value at June 30, 2019 |  |  |  |  |  | Three Months Ended June 30, 2019 Recognized in: |  |  |  | Six Months Ended June 30, 2019 Recognized in: |  |
| Quoted Prices in Active Markets for Identical Instruments |  | Significant Other Observable Inputs |  | Significant Unobservable Inputs |  | Gross charge-offs against allowance for loan losses |  | Net losses and operating expenses of repossessed assets |  | Gross charge-offs against allowance for loan losses |  | Net losses and operating expenses of repossessed assets
Nonaccruing loans | $ | — |  |  | $ | — |  |  | $ | 29,187 |  |  | $ | 11,335 |  |  | $ | — |  |  | $ | 20,917 |  |  | $ | — |
Real estate and other repossessed assets | — |  |  | 2,642 |  |  | 427 |  |  | — |  |  | 86 |  |  | — |  |  | 512 |
Fair Value Inputs, Fair Value Measured On a Nonrecurring Basis, Quantitative Information [Table Text Block] | A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of June 30, 2020 follows (in thousands):
|  | Fair Value |  | Valuation Technique(s) |  | Unobservable Input |  | Range (Weighted Average)
Nonaccruing loans |  | $ | 32,448 |  |  | Discounted cash flows |  | Management knowledge of industry and non-real estate collateral including but not limited to recoverable oil and gas reserves, forward-looking commodity prices, estimated operating costs |  | 0% - 83% (35%)1
Real estate and other repossessed assets |  | 400 |  |  | Appraised value, as adjusted |  | Marketability adjustments off appraised value2 |  | 87% - 87% (87%)
1 Represents fair value as a percentage of the unpaid principal balance. 2 Marketability adjustments include consideration of estimated costs to sell which is approximately 10% of the fair value. A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of June 30, 2019 follows (in thousands):
|  | Fair Value |  | Valuation Technique(s) |  | Unobservable Input |  | Range (Weighted Average)
Nonaccruing loans |  | $ | 29,187 |  |  | Discounted cash flows |  | Management knowledge of industry and non-real estate collateral including but not limited to recoverable oil and gas reserves, forward-looking commodity prices, estimated operating costs |  | 12% - 76% (47%)1
Real estate and other repossessed assets |  | 427 |  |  | Appraised value, as adjusted |  | Marketability adjustments off appraised value2 |  | 75% - 89% (88%)
1 Represents fair value as a percentage of the unpaid principal balance. 2 Marketability adjustments include consideration of estimated costs to sell which is approximately 10% of the fair value.
Fair Value of Financial Instruments [Table Text Block] | The following table presents the carrying values and estimated fair values of all financial instruments, including those financial assets and liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis as of June 30, 2020 (dollars in thousands):
|  | Carrying Value |  | Estimated Fair Value |  | Quoted Prices in Active Markets for Identical Instruments (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Cash and due from banks |  | $ | 762,453 |  |  | $ | 762,453 |  |  | $ | 762,453 |  |  | $ | — |  |  | $ | — |
Interest-bearing cash and cash equivalents |  | 485,319 |  |  | 485,319 |  |  | 485,319 |  |  | — |  |  | — |
Trading securities: |  |  |  |  |  |  |  |  |  |
U.S. government agency debentures |  | 4,237 |  |  | 4,237 |  |  | — |  |  | 4,237 |  |  | — |
Residential agency mortgage-backed securities |  | 1,146,454 |  |  | 1,146,454 |  |  | — |  |  | 1,146,454 |  |  | — |
Municipal and other tax-exempt securities |  | 22,710 |  |  | 22,710 |  |  | — |  |  | 22,710 |  |  | — |
Asset-backed securities |  | 5 |  |  | 5 |  |  | — |  |  | 5 |  |  | — |
Other trading securities |  | 22,699 |  |  | 22,699 |  |  | — |  |  | 22,699 |  |  | — |
Total trading securities |  | 1,196,105 |  |  | 1,196,105 |  |  | — |  |  | 1,196,105 |  |  | — |
Investment securities: |  |  |  |  |  |  |  |  |  |
Municipal and other tax-exempt securities |  | 84,239 |  |  | 88,623 |  |  | — |  |  | 88,623 |  |  | — |
Residential agency mortgage-backed securities |  | 9,812 |  |  | 10,734 |  |  | — |  |  | 10,734 |  |  | — |
Other debt securities |  | 175,565 |  |  | 199,769 |  |  | — |  |  | 8,048 |  |  | 191,721 |
Total investment securities |  | 269,616 |  |  | 299,126 |  |  | — |  |  | 107,405 |  |  | 191,721 |
Allowance for credit losses |  | (1,628) |  |  | — |  |  | — |  |  | — |  |  | — |
Investment securities, net of allowance |  | 267,988 |  |  | 299,126 |  |  | — |  |  | 107,405 |  |  | 191,721 |
Available for sale securities: |  |  |  |  |  |  |  |  |  |
U.S. Treasury |  | 912 |  |  | 912 |  |  | 912 |  |  | — |  |  | — |
Municipal and other tax-exempt securities |  | 31,240 |  |  | 31,240 |  |  | — |  |  | 31,240 |  |  | — |
Residential agency mortgage-backed securities |  | 9,147,238 |  |  | 9,147,238 |  |  | — |  |  | 9,147,238 |  |  | — |
Residential non-agency mortgage-backed securities |  | 35,250 |  |  | 35,250 |  |  | — |  |  | 35,250 |  |  | — |
Commercial agency mortgage-backed securities |  | 3,260,807 |  |  | 3,260,807 |  |  | — |  |  | 3,260,807 |  |  | — |
Other debt securities |  | 472 |  |  | 472 |  |  | — |  |  | — |  |  | 472 |
Total available for sale securities |  | 12,475,919 |  |  | 12,475,919 |  |  | 912 |  |  | 12,474,535 |  |  | 472 |
Fair value option securities: |  |  |  |  |  |  |  |  |  |
U.S. Treasury |  | 92,742 |  |  | 92,742 |  |  | 92,742 |  |  | — |  |  | — |
Residential agency mortgage-backed securities |  | 629,915 |  |  | 629,915 |  |  | — |  |  | 629,915 |  |  | — |
Total fair value option securities |  | 722,657 |  |  | 722,657 |  |  | 92,742 |  |  | 629,915 |  |  | — |
Residential mortgage loans held for sale |  | 319,357 |  |  | 319,357 |  |  | — |  |  | 309,672 |  |  | 9,685 |
Loans: |  |  |  |  |  |  |  |  |  |
Commercial |  | 14,158,510 |  |  | 14,038,257 |  |  | — |  |  | — |  |  | 14,038,257 |
Commercial real estate |  | 4,554,144 |  |  | 4,558,274 |  |  | — |  |  | — |  |  | 4,558,274 |
Paycheck protection program |  | 2,081,428 |  |  | 2,062,278 |  |  | — |  |  | — |  |  | 2,062,278 |
Loans to individuals |  | 3,361,808 |  |  | 3,393,293 |  |  | — |  |  | — |  |  | 3,393,293 |
Total loans |  | 24,155,890 |  |  | 24,052,102 |  |  | — |  |  | — |  |  | 24,052,102 |
Allowance for loan losses |  | (435,597) |  |  | — |  |  | — |  |  | — |  |  | — |
Loans, net of allowance |  | 23,720,293 |  |  | 24,052,102 |  |  | — |  |  | — |  |  | 24,052,102 |
Mortgage servicing rights |  | 97,971 |  |  | 97,971 |  |  | — |  |  | — |  |  | 97,971 |
Derivative instruments with positive fair value, net of cash collateral |  | 651,553 |  |  | 651,553 |  |  | 66,207 |  |  | 585,346 |  |  | — |
Deposits with no stated maturity |  | 31,539,554 |  |  | 31,539,554 |  |  | — |  |  | — |  |  | 31,539,554 |
Time deposits |  | 2,352,760 |  |  | 2,367,446 |  |  | — |  |  | — |  |  | 2,367,446 |
Other borrowed funds |  | 4,531,165 |  |  | 4,527,814 |  |  | — |  |  | — |  |  | 4,527,814 |
Subordinated debentures |  | 275,973 |  |  | 273,293 |  |  | — |  |  | 273,293 |  |  | — |
Derivative instruments with negative fair value, net of cash collateral |  | 610,020 |  |  | 610,020 |  |  | — |  |  | 610,020 |  |  | — |
The following table presents the carrying values and estimated fair values of all financial instruments, including those financial assets and liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis as of December 31, 2019 (dollars in thousands):
|  | Carrying Value |  | Estimated Fair Value |  | Quoted Prices in Active Markets for Identical Instruments (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Cash and due from banks |  | $ | 735,836 |  |  | $ | 735,836 |  |  | $ | 735,836 |  |  | $ | — |  |  | $ | — |
Interest-bearing cash and cash equivalents |  | 522,985 |  |  | 522,985 |  |  | 522,985 |  |  | — |  |  | — |
Trading securities: |  |  |  |  |  |  |  |  |  |
U.S. government agency debentures |  | 44,264 |  |  | 44,264 |  |  | — |  |  | 44,264 |  |  | — |
Residential agency mortgage-backed securities |  | 1,504,651 |  |  | 1,504,651 |  |  | — |  |  | 1,504,651 |  |  | — |
Municipal and other tax-exempt securities |  | 26,196 |  |  | 26,196 |  |  | — |  |  | 26,196 |  |  | — |
Asset-backed securities |  | 14,084 |  |  | 14,084 |  |  | — |  |  | 14,084 |  |  | — |
Other trading securities |  | 34,726 |  |  | 34,726 |  |  | — |  |  | 34,726 |  |  | — |
Total trading securities |  | 1,623,921 |  |  | 1,623,921 |  |  | — |  |  | 1,623,921 |  |  | — |
Investment securities: |  |  |  |  |  |  |  |  |  |
Municipal and other tax-exempt securities |  | 93,653 |  |  | 96,897 |  |  | — |  |  | 96,897 |  |  | — |
Residential agency mortgage-backed securities |  | 10,676 |  |  | 11,164 |  |  | — |  |  | 11,164 |  |  | — |
Other debt securities |  | 189,089 |  |  | 206,341 |  |  | — |  |  | 8,206 |  |  | 198,135 |
Total investment securities |  | 293,418 |  |  | 314,402 |  |  | — |  |  | 116,267 |  |  | 198,135 |
Available for sale securities: |  |  |  |  |  |  |  |  |  |
U.S. Treasury |  | 1,600 |  |  | 1,600 |  |  | 1,600 |  |  | — |  |  | — |
Municipal and other tax-exempt securities |  | 1,861 |  |  | 1,861 |  |  | — |  |  | 1,861 |  |  | — |
Residential agency mortgage-backed securities |  | 8,046,096 |  |  | 8,046,096 |  |  | — |  |  | 8,046,096 |  |  | — |
Residential non-agency mortgage-backed securities |  | 41,609 |  |  | 41,609 |  |  | — |  |  | 41,609 |  |  | — |
Commercial agency mortgage-backed securities |  | 3,178,005 |  |  | 3,178,005 |  |  | — |  |  | 3,178,005 |  |  | — |
Other debt securities |  | 472 |  |  | 472 |  |  | — |  |  | — |  |  | 472 |
Total available for sale securities |  | 11,269,643 |  |  | 11,269,643 |  |  | 1,600 |  |  | 11,267,571 |  |  | 472 |
Fair value option securities: |  |  |  |  |  |  |  |  |  |
U.S. Treasury |  | 9,917 |  |  | 9,917 |  |  | 9,917 |  |  | — |  |  | — |
Residential agency mortgage-backed securities |  | 1,088,660 |  |  | 1,088,660 |  |  | — |  |  | 1,088,660 |  |  | — |
Total fair value option securities |  | 1,098,577 |  |  | 1,098,577 |  |  | 9,917 |  |  | 1,088,660 |  |  | — |
Residential mortgage loans held for sale |  | 182,271 |  |  | 182,271 |  |  | — |  |  | 173,958 |  |  | 8,313 |
Loans: |  |  |  |  |  |  |  |  |  |
Commercial |  | 14,031,650 |  |  | 13,966,221 |  |  | — |  |  | — |  |  | 13,966,221 |
Commercial real estate |  | 4,433,783 |  |  | 4,422,717 |  |  | — |  |  | — |  |  | 4,422,717 |
Residential mortgage |  | 2,084,172 |  |  | 2,098,093 |  |  | — |  |  | — |  |  | 2,098,093 |
Personal |  | 1,201,382 |  |  | 1,202,298 |  |  | — |  |  | — |  |  | 1,202,298 |
Total loans |  | 21,750,987 |  |  | 21,689,329 |  |  | — |  |  | — |  |  | 21,689,329 |
Allowance for loan losses |  | (210,759) |  |  | — |  |  | — |  |  | — |  |  | — |
Loans, net of allowance |  | 21,540,228 |  |  | 21,689,329 |  |  | — |  |  | — |  |  | 21,689,329 |
Mortgage servicing rights |  | 201,886 |  |  | 201,886 |  |  | — |  |  | — |  |  | 201,886 |
Derivative instruments with positive fair value, net of cash collateral |  | 323,375 |  |  | 323,375 |  |  | 8,944 |  |  | 314,431 |  |  | — |
Deposits with no stated maturity |  | 25,403,319 |  |  | 25,403,319 |  |  | — |  |  | — |  |  | 25,403,319 |
Time deposits |  | 2,217,849 |  |  | 2,212,467 |  |  | — |  |  | — |  |  | 2,212,467 |
Other borrowed funds |  | 8,345,405 |  |  | 8,315,860 |  |  | — |  |  | — |  |  | 8,315,860 |
Subordinated debentures |  | 275,923 |  |  | 284,627 |  |  | — |  |  | 284,627 |  |  | — |
Derivative instruments with negative fair value, net of cash collateral |  | 251,128 |  |  | 251,128 |  |  | — |  |  | 251,128 |  |  | — |

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