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Restructurings for Borrowers Experiencing Financial Difficulty (Narrative) (Details) - Contract	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financing Receivable Modifications [Line Items]
Mortgage loans on real estate weighted average term		1 year
Number of payment defaults	0		0
Residential Single Family
Financing Receivable Modifications [Line Items]
Loan is considered payment default		30 days

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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.

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Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

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