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Loans, Lending Commitments and Related Allowance for Credit Losses - Schedule of Selected Credit Ratios (Details)	Sep. 30, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
ACL for loans to total HFI loans	0.50%	0.50%
Nonaccrual HFI loans to total HFI loans	0.50%	0.40%
ACL for loans to nonaccrual HFI loans	94.70%	104.60%

X

- Definition

Percentage of allowance for credit loss to nonaccrual financing receivable.

+ References

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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Period Type:	instant

X

- 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_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- 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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Namespace Prefix:	srt_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

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