Loans Receivable and Allowance for Credit Losses (Loan Modifications Made to Borrowers) (Details)	12 Months Ended
Dec. 31, 2023 USD ($)
Term Extension [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 4,321,547,000
Combination - Term Extension and Interest Rate Adjustment [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	19,225,000
Commercial Real Estate Loans [Member] \| Term Extension [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 4,321,547,000
% of Total Class of Financing Receivable	0.64%
Commercial Real Estate Loans [Member] \| Minimum [Member] \| Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modified weighted average term	3 months
Commercial Real Estate Loans [Member] \| Maximum [Member] \| Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modified weighted average term	6 months
Consumer Loans [Member] \| Combination - Term Extension and Interest Rate Adjustment [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 19,225,000
% of Total Class of Financing Receivable	0.01%
Weighted average interest rate	5.25%
Consumer Loans [Member] \| Combination - Term Extension and Interest Rate Adjustment [Member] \| New Loans Granted [Member]
Financing Receivable, Modified [Line Items]
Weighted average term	34 months
Weighted average interest rate	11.03%

Financing Receivable, Weighted Average Interest Rate

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- Definition

Financing Receivable, Weighted Average Term

+ References

No definition available.

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- Definition

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+ References

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty.

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- Definition

Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A

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