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Fair Value Accounting (Carrying And Estimated Fair Values Of Financial Instruments Carried On Balance Sheet) (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Jan. 01, 2020 | Dec. 31, 2019
Financial assets |  |  |
Total investment securities available for sale | $ 7,962,438 |  | $ 6,778,670
Mortgage loans held for sale | 760,123 |  | 115,173
Private equity investments | 1,021 |  | 19,389
Mutual funds and mutual funds held in rabbi trusts | 37,650 |  | 32,348
Loans, net |  | $ 36,881,048 |
Derivative assets | 401,295 |  | 140,016
Financial Liabilities |  |  |
Non-interest-bearing deposits | 13,477,854 |  | 9,439,485
Time deposits | 5,948,196 |  |
Total deposits | 46,691,571 |  | 38,405,504
Securities sold under repurchase agreements | 227,922 |  | 165,690
Other short-term borrowings | 7,717 |  | 1,753,560
Long-term debt | 1,202,494 |  | 2,153,897
Level 1 |  |  |
Financial assets |  |  |
Total cash, cash equivalents, and restricted cash | 4,252,917 |  | 1,186,918
Trading securities | 0 |  | 0
Total investment securities available for sale | 20,257 |  | 19,855
Mortgage loans held for sale | 0 |  | 0
Private equity investments | 0 |  | 15,502
Mutual funds and mutual funds held in rabbi trusts | 37,650 |  | 32,348
Loans, net | 0 |  | 0
GGL/SBA loans servicing asset | 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
Securities sold under repurchase agreements | 227,922 |  | 165,690
Trading liability for short positions | 0 |  | 1,560
Other short-term borrowings |  |  | 0
Long-term debt | 0 |  | 0
Earnout liability | 0 |  | 0
Derivative liabilities | 0 |  | 0
Level 2 |  |  |
Financial assets |  |  |
Total cash, cash equivalents, and restricted cash | 0 |  | 0
Trading securities | 10,880 |  | 7,212
Total investment securities available for sale | 7,940,160 |  | 6,756,710
Mortgage loans held for sale | 216,647 |  | 115,173
Private equity investments | 0 |  | 0
Mutual funds and mutual funds held in rabbi trusts | 0 |  | 0
Loans, net | 0 |  | 0
GGL/SBA loans servicing asset | 0 |  | 0
Derivative assets | 401,295 |  | 140,016
Financial Liabilities |  |  |
Non-interest-bearing deposits | 13,477,854 |  | 9,439,485
Non-time interest-bearing deposits | 27,265,521 |  | 19,891,711
Time deposits | 5,970,146 |  | 9,112,459
Total deposits | 46,713,521 |  | 38,443,655
Securities sold under repurchase agreements | 0 |  | 0
Trading liability for short positions | 7,717 |  | 0
Other short-term borrowings |  |  | 1,752,000
Long-term debt | 1,266,825 |  | 2,185,717
Earnout liability | 0 |  | 0
Derivative liabilities | 155,119 |  | 34,732
Level 3 |  |  |
Financial assets |  |  |
Total cash, cash equivalents, and restricted cash | 0 |  | 0
Trading securities | 0 |  | 0
Total investment securities available for sale | 2,021 |  | 2,105
Mortgage loans held for sale | 544,292 |  | 0
Private equity investments | 1,021 |  | 3,887
Mutual funds and mutual funds held in rabbi trusts | 0 |  | 0
Loans, net | 37,605,881 |  | 36,931,256
GGL/SBA loans servicing asset | 3,258 |  | 3,040
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
Securities sold under repurchase agreements | 0 |  | 0
Trading liability for short positions | 0 |  | 0
Other short-term borrowings |  |  | 0
Long-term debt | 0 |  | 0
Earnout liability | 5,677 |  | 11,016
Derivative liabilities | $ 2,048 |  | 2,339
Level 3 | Weighted Average [Member] | Other Assets Held for Sale [Member] | Fair Value, Measurements, Nonrecurring | Third-party appraised value less estimated selling costs or BOV [Member] |  |  |
Financial Liabilities |  |  |
Fair Value Inputs, Estimated selling costs | 7.00% |  |
Carrying Value |  |  |
Financial assets |  |  |
Total cash, cash equivalents, and restricted cash | $ 4,252,917 |  | 1,186,918
Trading securities | 10,880 |  | 7,212
Total investment securities available for sale | 7,962,438 |  | 6,778,670
Mortgage loans held for sale | 760,123 |  | 115,173
Private equity investments | 1,021 |  | 19,389
Mutual funds and mutual funds held in rabbi trusts | 37,650 |  | 32,348
Loans, net | 37,647,248 |  | 36,881,048
GGL/SBA loans servicing asset | 3,258 |  | 3,040
Derivative assets | 401,295 |  | 140,016
Financial Liabilities |  |  |
Non-interest-bearing deposits | 13,477,854 |  | 9,439,485
Non-time interest-bearing deposits | 27,265,521 |  | 19,891,711
Time deposits | 5,948,196 |  | 9,074,308
Total deposits | 46,691,571 |  | 38,405,504
Securities sold under repurchase agreements | 227,922 |  | 165,690
Trading liability for short positions | 7,717 |  | 1,560
Other short-term borrowings |  |  | 1,752,000
Long-term debt | 1,202,494 |  | 2,153,897
Earnout liability | 5,677 |  | 11,016
Derivative liabilities | 157,167 |  | 37,071
Estimated Fair Value |  |  |
Financial assets |  |  |
Total cash, cash equivalents, and restricted cash | 4,252,917 |  | 1,186,918
Trading securities | 10,880 |  | 7,212
Total investment securities available for sale | 7,962,438 |  | 6,778,670
Mortgage loans held for sale | 760,939 |  | 115,173
Private equity investments | 1,021 |  | 19,389
Mutual funds and mutual funds held in rabbi trusts | 37,650 |  | 32,348
Loans, net | 37,605,881 |  | 36,931,256
GGL/SBA loans servicing asset | 3,258 |  | 3,040
Derivative assets | 401,295 |  | 140,016
Financial Liabilities |  |  |
Non-interest-bearing deposits | 13,477,854 |  | 9,439,485
Non-time interest-bearing deposits | 27,265,521 |  | 19,891,711
Time deposits | 5,970,146 |  | 9,112,459
Total deposits | 46,713,521 |  | 38,443,655
Securities sold under repurchase agreements | 227,922 |  | 165,690
Trading liability for short positions | 7,717 |  | 1,560
Other short-term borrowings |  |  | 1,752,000
Long-term debt | 1,266,825 |  | 2,185,717
Earnout liability | 5,677 |  | 11,016
Derivative liabilities | $ 157,167 |  | $ 37,071

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