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Loans and Allowance for Loan Losses (Schedule of Allowances for Loan Losses and Recorded Investment in Loans) (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jan. 01, 2020 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Accounting Standards Update [Extensible List] | us-gaap:AccountingStandardsUpdate201613Member |  |  | us-gaap:AccountingStandardsUpdate201613Member | us-gaap:AccountingStandardsUpdate201602Member
Allowance for loan losses: |  |  |  |  |
Beginning balance | $ 281,402 | $ 588,648 | $ 257,376 | $ 281,402 | $ 250,555
Charge-offs |  | (35,346) | (24,726) | (89,999) | (62,290)
Recoveries |  | 6,880 | 4,801 | 17,426 | 13,498
Provision for loan losses |  | 43,618 | 27,562 | 311,977 | 63,250
Ending balance | 281,402 | 603,800 | 265,013 | 603,800 | 265,013
Impact from Adoption |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance | 82,994 |  |  | 82,994 |
Ending balance | 82,994 |  |  |  |
Commercial & Industrial |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  | 229,915 | 138,004 |  | 133,123
Charge-offs |  | (19,367) | (15,425) | (57,497) | (39,558)
Recoveries |  | 3,796 | 2,276 | 8,798 | 6,087
Provision for loan losses |  | 46,256 | 17,156 | 165,827 | 42,359
Ending balance | 145,782 | 260,600 | 142,011 | 260,600 | 142,011
Commercial & Industrial | Impact from Adoption |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance | (2,310) |  |  | (2,310) |
Ending balance | (2,310) |  |  |  |
Commercial Real Estate |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  | 171,526 | 63,463 |  | 68,796
Charge-offs |  | (6,878) | (3,275) | (8,585) | (5,369)
Recoveries |  | 1,225 | 1,490 | 2,160 | 3,788
Provision for loan losses |  | (22,068) | 280 | 83,451 | (5,257)
Ending balance | 67,430 | 143,805 | 61,958 | 143,805 | 61,958
Commercial Real Estate | Impact from Adoption |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance | (651) |  |  | (651) |
Ending balance | (651) |  |  |  |
Consumer |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  | 187,207 | 55,909 |  | 48,636
Charge-offs |  | (9,101) | (6,026) | (23,917) | (17,363)
Recoveries |  | 1,859 | 1,035 | 6,468 | 3,623
Provision for loan losses |  | 19,430 | 10,126 | 62,699 | 26,148
Ending balance | 68,190 | $ 199,395 | $ 61,044 | 199,395 | $ 61,044
Consumer | Impact from Adoption |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance | 85,955 |  |  | $ 85,955 |
Ending balance | $ 85,955 |  |  |  |

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