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Loans Receivable and Allowance for Credit Losses - Allowance for Credit Losses Narrative (Details) $ in Millions | 12 Months Ended |
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Dec. 31, 2023 | Dec. 31, 2022 USD ($) qtr | Dec. 31, 2021 USD ($)
Financing Receivable, Allowance for Credit Losses |  |  |
Life time loss rate, period span | qtr |  | 11 |
Financing receivable and off balance sheet credit loss allowance |  | $ 621.9 | $ 569.1
Decrease in allowance for credit losses |  | $ 52.8 |
Annual GDP growth rate (in percent) |  | 1.90% |
Average increase in the unemployment rate (in percent) |  | 3.70% |
Credit Derivative, Term |  | 10 years |
Forecast |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |
Annual GDP growth rate (in percent) | 0.90% |  |
Average increase in the unemployment rate (in percent) | 4.00% |  |
Average decline of annual GDP rate (in percent) | 1.30% |  |
Average rising of unemployment rate (in percent) | 6.80% |  |
Higher GDP growth rate (in percent) | 2.60% |  |
Improving of unemployment rate and no recession (in percent) | 3.50% |  |

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- Definition Average Decline Of Annual GDP Rate + References No definition available. + Details
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- Definition Financing Receivable And Off Balance Sheet Credit Loss Allowance + References No definition available. + Details
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- Definition Financing Receivable And Off Balance Sheet Credit Loss Allowance, Period Increase (Decrease) + References No definition available. + Details
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- Definition Term of the credit risk derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4K -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5708775-113959 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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