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Amount of writeoff of accrued interest on financing receivable recognized by reversing interest income.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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-Section 50
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Amount of interest income on financing receivable on nonaccrual status.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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-Section 50
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Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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-Topic 310
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LOANS HELD FOR INVESTMENT - Additional Information II (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Income Recognized on Nonaccrual Loans	$ 0.3	$ 0.5	$ 0.9	$ 1.0
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans in process of foreclosure amount	$ 35.1		35.1
Loans foreclosure delinquency threshold	120 days
Residential Portfolio Segment [Member] \| Loans Insured or Guaranteed by US Government Authorities [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans in process of foreclosure amount	$ 12.8		12.8
Residential Portfolio Segment [Member] \| Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans in process of foreclosure amount	5.2		5.2
Nonperforming Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable accrued interest writeoff	$ 0.7	$ 0.5	$ 1.5	$ 1.1