Loans, Lending Commitments and Related Allowance for Credit Losses - Schedule of Selected Credit Ratios (Details)	Sep. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
ACL for loans to total HFI loans	0.50%	0.60%
Nonaccrual HFI loans to total HFI loans	0.40%	0.40%
ACL for loans to nonaccrual HFI loans	117.90%	133.30%

Percentage of allowance for credit loss to nonaccrual financing receivable.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph a
-Subparagraph (3)
-Publisher SEC

+ Details

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- Definition

Percentage of allowance for credit loss to total financing receivable outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph a
-Subparagraph (1)
-Publisher SEC

+ Details

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Namespace Prefix:	srt_
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- Definition

Percentage of nonaccrual to total financing receivable outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph a
-Subparagraph (2)
-Publisher SEC

+ Details

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- References

No definition available.

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