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Loans Held-for-Sale, Net - Narrative (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sale of loans held-for-sale excluding acquired loans		$ 4,610,000,000	$ 4,890,000,000	$ 5,440,000,000
Loans held-for-sale, nonaccrual		$ 0	$ 0
Carrying Value
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-sale 90 or more days past due		0	0
US Government Sponsored-Enterprise Insured Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Period of loans held for sale sold		60 days
Private Label
Accounts, Notes, Loans and Financing Receivable [Line Items]
Period of loans held for sale sold		180 days
Net loss of swaps gain with loans				$ 5,200,000
Number of loans under the loan portfolio | loan				7
Unpaid Principal Balance				$ 129,900,000
Net loans carrying value				$ 116,400,000
Gain on sale of financing receivable	$ 900,000

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Amount of financing receivable past due.

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Amount of loans, net carrying value.

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The amount of net loss of swaps gain with loans.

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- Definition

Represents the number of loans related to the real estate property under the loan portfolio.

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- Definition

Maximum period from the origination date a loan receivables held-for-sale will be sold.

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The cash inflow resulting from the sale of loans excluding loans acquired which are classified as held-for-sale, including proceeds from loans sold through mortgage securitization.

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Amount of upb is unpaid principal balance.

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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/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

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Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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Amount of gain (loss) on sale of financing receivable.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481326/860-20-50-5

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