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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 | 6 Months Ended
--- | --- | --- | ---
Jan. 01, 2020 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 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 | $ 493,452 | $ 257,036 | $ 281,402 | $ 250,555
Charge-offs |  | (30,778) | (16,865) | (54,652) | (37,563)
Recoveries |  | 6,732 | 5,086 | 10,545 | 8,696
Provision for (reversal of) loan losses |  | 119,242 | 12,119 | 268,359 | 35,688
Ending balance | 281,402 | 588,648 | 257,376 | 588,648 | 257,376
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 |  | 216,950 | 135,639 |  | 133,123
Charge-offs |  | (23,245) | (11,095) | (38,130) | (24,133)
Recoveries |  | 3,261 | 1,821 | 5,002 | 3,810
Provision for (reversal of) loan losses |  | 32,949 | 11,639 | 119,571 | 25,204
Ending balance | 145,782 | 229,915 | 138,004 | 229,915 | 138,004
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 |  | 107,117 | 69,009 |  | 68,796
Charge-offs |  | (689) | (861) | (1,706) | (2,093)
Recoveries |  | 536 | 1,954 | 935 | 2,298
Provision for (reversal of) loan losses |  | 64,562 | (6,639) | 105,518 | (5,538)
Ending balance | 67,430 | 171,526 | 63,463 | 171,526 | 63,463
Commercial Real Estate | Impact from Adoption |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance | (651) |  |  | (651) |
Ending balance | (651) |  |  |  |
Consumer |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance |  | 169,385 | 52,388 |  | 48,636
Charge-offs |  | (6,844) | (4,909) | (14,816) | (11,337)
Recoveries |  | 2,935 | 1,311 | 4,608 | 2,588
Provision for (reversal of) loan losses |  | 21,731 | 7,119 | 43,270 | 16,022
Ending balance | 68,190 | $ 187,207 | $ 55,909 | 187,207 | $ 55,909
Consumer | Impact from Adoption |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning balance | 85,955 |  |  | $ 85,955 |
Ending balance | $ 85,955 |  |  |  |

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