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Fair Value Accounting (Carrying and Estimated Fair Values of Financial Instruments Carried on Balance Sheet) (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financial assets |  |
Investment securities available for sale | $ 10,481,071 | $ 7,962,438
Loans held for sale | 550,948 | 760,123
Loans, net | 37,848,787 | 37,647,248
Financial liabilities |  |
Non-interest-bearing deposits | 15,787,882 | 13,477,854
Total deposits | 47,688,419 | 46,691,571
Federal funds purchased and securities sold under repurchase agreements | 262,548 | 227,922
Long-term debt | 1,203,761 | 1,202,494
Level 1 |  |
Financial assets |  |
Total cash, cash equivalents, and restricted cash | 2,687,420 | 4,252,917
Trading securities | 0 | 0
Investment securities available for sale | 117,893 | 20,257
Loans held for sale | 0 | 0
Private equity investments | 0 | 0
Other investments | 0 |
Mutual funds and mutual funds held in rabbi trusts | 42,002 | 37,650
Loans, net | 0 | 0
GGL/SBA loans servicing asset | 0 | 0
FRB and FHLB stock | 0 | 0
Derivative assets | 0 | 0
Financial liabilities |  |
Non-interest-bearing deposits | 0 | 0
Non-time interest-bearing deposits | 0 | 0
Time deposits | 0 | 0
Total deposits | 0 | 0
Federal funds purchased and securities sold under repurchase agreements | 262,548 | 227,922
Trading liability for short positions |  | 0
Long-term debt | 0 | 0
Earnout liability |  | 0
Mutual funds held in rabbi trusts | 25,396 | 20,752
Derivative liabilities | 0 | 0
Level 2 |  |
Financial assets |  |
Total cash, cash equivalents, and restricted cash | 0 | 0
Trading securities | 6,876 | 10,880
Investment securities available for sale | 10,363,178 | 7,940,160
Loans held for sale | 152,258 | 216,647
Private equity investments | 0 | 0
Other investments | 0 |
Mutual funds and mutual funds held in rabbi trusts | 0 | 0
Loans, net | 0 | 0
GGL/SBA loans servicing asset | 0 | 0
FRB and FHLB stock | 159,930 | 157,520
Derivative assets | 244,991 | 401,295
Financial liabilities |  |
Non-interest-bearing deposits | 15,787,882 | 13,477,854
Non-time interest-bearing deposits | 27,701,975 | 27,265,521
Time deposits | 4,214,960 | 5,970,146
Total deposits | 47,704,817 | 46,713,521
Federal funds purchased and securities sold under repurchase agreements | 0 | 0
Trading liability for short positions |  | 7,717
Long-term debt | 1,254,585 | 1,266,825
Earnout liability |  | 0
Mutual funds held in rabbi trusts | 0 | 0
Derivative liabilities | 109,320 | 155,119
Level 3 |  |
Financial assets |  |
Total cash, cash equivalents, and restricted cash | 0 | 0
Trading securities | 0 | 0
Investment securities available for sale | 0 | 2,021
Loans held for sale | 399,110 | 544,292
Private equity investments | 991 | 1,021
Other investments | 10,000 |
Mutual funds and mutual funds held in rabbi trusts | 0 | 0
Loans, net | 38,054,067 | 37,605,881
GGL/SBA loans servicing asset | 3,388 | 3,258
FRB and FHLB stock | 0 | 0
Derivative assets | 0 | 0
Financial liabilities |  |
Non-interest-bearing deposits | 0 | 0
Non-time interest-bearing deposits | 0 | 0
Time deposits | 0 | 0
Total deposits | 0 | 0
Federal funds purchased and securities sold under repurchase agreements | 0 | 0
Trading liability for short positions |  | 0
Long-term debt | 0 | 0
Earnout liability |  | 5,677
Mutual funds held in rabbi trusts | 0 | 0
Derivative liabilities | 1,171 | 2,048
Carrying Value |  |
Financial assets |  |
Total cash, cash equivalents, and restricted cash | 2,687,420 | 4,252,917
Trading securities | 6,876 | 10,880
Investment securities available for sale | 10,481,071 | 7,962,438
Loans held for sale | 550,948 | 760,123
Private equity investments | 991 | 1,021
Other investments | 10,000 |
Mutual funds and mutual funds held in rabbi trusts | 42,002 | 37,650
Loans, net | 37,848,787 | 37,647,248
GGL/SBA loans servicing asset | 3,388 | 3,258
FRB and FHLB stock | 159,930 | 157,520
Derivative assets | 244,991 | 401,295
Financial liabilities |  |
Non-interest-bearing deposits | 15,787,882 | 13,477,854
Non-time interest-bearing deposits | 27,701,975 | 27,265,521
Time deposits | 4,198,562 | 5,948,196
Total deposits | 47,688,419 | 46,691,571
Federal funds purchased and securities sold under repurchase agreements | 262,548 | 227,922
Trading liability for short positions |  | 7,717
Long-term debt | 1,203,761 | 1,202,494
Earnout liability |  | 5,677
Mutual funds held in rabbi trusts | 25,396 | 20,752
Derivative liabilities | 110,491 | 157,167
Fair Value |  |
Financial assets |  |
Total cash, cash equivalents, and restricted cash | 2,687,420 | 4,252,917
Trading securities | 6,876 | 10,880
Investment securities available for sale | 10,481,071 | 7,962,438
Loans held for sale | 551,368 | 760,939
Private equity investments | 991 | 1,021
Other investments | 10,000 |
Mutual funds and mutual funds held in rabbi trusts | 42,002 | 37,650
Loans, net | 38,054,067 | 37,605,881
GGL/SBA loans servicing asset | 3,388 | 3,258
FRB and FHLB stock | 159,930 | 157,520
Derivative assets | 244,991 | 401,295
Financial liabilities |  |
Non-interest-bearing deposits | 15,787,882 | 13,477,854
Non-time interest-bearing deposits | 27,701,975 | 27,265,521
Time deposits | 4,214,960 | 5,970,146
Total deposits | 47,704,817 | 46,713,521
Federal funds purchased and securities sold under repurchase agreements | 262,548 | 227,922
Trading liability for short positions |  | 7,717
Long-term debt | 1,254,585 | 1,266,825
Earnout liability |  | 5,677
Mutual funds held in rabbi trusts | 25,396 | 20,752
Derivative liabilities | $ 110,491 | $ 157,167

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