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Loans and Leases - Schedule of Credit Quality Indicator, Loan Class and Year of Origination the Amortized Cost Basis of Loans And Leases (Details) - USD ($) | Mar. 31, 2021 | Dec. 31, 2020
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Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | $ 43,125,139,000 | $ 42,883,598,000
Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 39,574,972,000 | 39,426,187,000
Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 3,550,167,000 | 3,457,411,000
Pass | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 36,838,468,000 | 37,443,813
Pass | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 3,491,550,000 | 3,428,351,000
Special Mention | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 1,679,911,000 | 1,228,338
Special Mention | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 2,071,000 | 2,842,000
Substandard | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 1,056,593,000 | 754,036,000
Substandard | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 56,546,000 | 26,218,000
2021 |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 2,342,148,000 |
2021 | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 2,092,263,000 |
2021 | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 249,885,000 |
2021 | Pass | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 2,092,263,000 |
2021 | Pass | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 249,885,000 |
Prior to 2017 |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 10,961,387,000 |
Prior to 2017 | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 10,711,949,000 |
Prior to 2017 | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 249,438,000 |
Prior to 2017 | Pass | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 9,238,124,000 |
Prior to 2017 | Pass | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 235,594,000 |
Prior to 2017 | Special Mention | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 969,925,000 |
Prior to 2017 | Substandard | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 503,900,000 |
Prior to 2017 | Substandard | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 13,844,000 |
2020 |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 10,607,260,000 | 10,798,441,000
2020 | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 9,600,268,000 | 9,832,498,000
2020 | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 1,006,992,000 | 965,943,000
2020 | Pass | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 9,587,201,000 | 9,819,431,000
2020 | Pass | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 1,004,860,000 | 962,956,000
2020 | Special Mention | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 13,067,000 | 13,067
2020 | Substandard | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 2,132,000 | 2,987,000
2019 |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 7,524,384,000 | 7,720,394,000
2019 | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 6,840,984,000 | 6,957,848
2019 | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 683,400,000 | 762,546,000
2019 | Pass | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 6,432,567,000 | 6,719,587,000
2019 | Pass | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 679,606,000 | 757,220,000
2019 | Special Mention | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 215,301,000 | 116,400
2019 | Special Mention | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 71,000 | 42,000
2019 | Substandard | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 193,116,000 | 121,861
2019 | Substandard | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 3,723,000 | 5,284,000
2018 |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 6,218,188,000 | 6,523,263,000
2018 | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 6,067,158,000 | 6,340,027
2018 | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 151,030,000 | 183,236,000
2018 | Pass | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 5,472,277,000 | 5,986,476,000
2018 | Pass | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 149,190,000 | 180,133,000
2018 | Special Mention | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 345,152,000 | 176,428
2018 | Substandard | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 249,729,000 | 177,123
2018 | Substandard | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 1,840,000 | 3,103,000
2017 |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 4,446,355,000 | 4,708,513,000
2017 | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 4,242,168,000 | 4,485,992,000
2017 | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 204,187,000 | 222,521,000
2017 | Pass | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 3,995,854,000 | 4,260,433,000
2017 | Pass | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 195,499,000 | 209,963,000
2017 | Special Mention | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 136,466,000 | 164,635
2017 | Substandard | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 109,848,000 | 60,924
2017 | Substandard | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 8,688,000 | 12,558,000
2016 |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis |  | 3,743,955,000
2016 | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis |  | 3,616,023,000
2016 | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis |  | 127,932,000
2016 | Pass | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis |  | 3,062,012,000
2016 | Pass | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis |  | 126,680,000
2016 | Special Mention | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis |  | 332,176
2016 | Substandard | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis |  | 221,835,000
2016 | Substandard | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis |  | 1,252,000
Prior to 2016 |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis |  | 8,315,224,000
Prior to 2016 | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis |  | 8,169,191,000
Prior to 2016 | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis |  | 146,033,000
Prior to 2016 | Pass | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis |  | 7,571,266,000
Prior to 2016 | Pass | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis |  | 144,999,000
Prior to 2016 | Special Mention | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis |  | 425,632
Prior to 2016 | Substandard | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis |  | 172,293,000
Prior to 2016 | Substandard | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis |  | 1,034,000
Revolving Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 1,025,417,000 | 1,073,808,000
Revolving Loans | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 20,182,000 | 24,608,000
Revolving Loans | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 1,005,235,000 | 1,049,200,000
Revolving Loans | Pass | Mortgage Receivable |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 20,182,000 | 24,608
Revolving Loans | Pass | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 976,916,000 | 1,046,400,000
Revolving Loans | Special Mention | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | 2,000,000 | $ 2,800,000
Revolving Loans | Substandard | Other Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans and lease receivable amortized cost basis | $ 26,319,000 |

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