Fair Value Option - Aggregate Differences (Details) - USD ($)	Jun. 30, 2025	Dec. 31, 2024
Long-term beneficial interests
Performing loans, ninety days or more past due	$ 0	$ 0
Lending-related commitments, fair value option elected
Long-term beneficial interests
Contractual amount of lending-related commitments	14,500,000,000	12,200,000,000
Contractual lending-related commitments, fair value	(6,000,000)	50,000,000
Contractual principal outstanding
Loans
Nonaccrual loans	4,791,000,000	5,140,000,000
All other performing loans	66,302,000,000	52,513,000,000
Total loans	71,150,000,000	57,703,000,000
Contractual principal outstanding \| Principal-protected debt
Long-term debt
Total long-term debt	66,782,000,000	57,414,000,000
Contractual principal outstanding \| Loans reported as trading assets
Loans
Nonaccrual loans	3,406,000,000	3,429,000,000
All other performing loans	13,810,000,000	12,171,000,000
Contractual principal outstanding \| Loans
Loans
Nonaccrual loans	1,385,000,000	1,711,000,000
90 or more days past due and government guaranteed	57,000,000	50,000,000
All other performing loans	52,492,000,000	40,342,000,000
Fair value
Loans
Nonaccrual loans	1,599,000,000	1,956,000,000
All other performing loans	64,436,000,000	50,665,000,000
Total loans	66,087,000,000	52,666,000,000
Long-term debt
Total long-term debt	118,357,000,000	100,780,000,000
Long-term beneficial interests
Total long-term beneficial interests	7,000,000	1,000,000
Fair value \| Principal-protected debt
Long-term debt
Total long-term debt	56,559,000,000	47,780,000,000
Fair value \| Nonprincipal-protected debt
Long-term debt
Total long-term debt	61,798,000,000	53,000,000,000
Long-term beneficial interests
Total long-term beneficial interests	7,000,000	1,000,000
Fair value \| Loans reported as trading assets
Loans
Nonaccrual loans	469,000,000	464,000,000
All other performing loans	12,318,000,000	10,852,000,000
Fair value \| Loans
Loans
Nonaccrual loans	1,130,000,000	1,492,000,000
90 or more days past due and government guaranteed	52,000,000	45,000,000
All other performing loans	52,118,000,000	39,813,000,000
Fair value over/(under) contractual principal outstanding
Loans
Nonaccrual loans, Fair value over/(under) contractual principal outstanding	(3,192,000,000)	(3,184,000,000)
All other performing loans	(1,866,000,000)	(1,848,000,000)
Total loans	(5,063,000,000)	(5,037,000,000)
Fair value over/(under) contractual principal outstanding \| Principal-protected debt
Long-term debt
Long-term debt, Fair value over/(under) contractual principal outstanding	(10,223,000,000)	(9,634,000,000)
Fair value over/(under) contractual principal outstanding \| Loans reported as trading assets
Loans
Nonaccrual loans, Fair value over/(under) contractual principal outstanding	(2,937,000,000)	(2,965,000,000)
All other performing loans	(1,492,000,000)	(1,319,000,000)
Fair value over/(under) contractual principal outstanding \| Loans
Loans
Nonaccrual loans, Fair value over/(under) contractual principal outstanding	(255,000,000)	(219,000,000)
90 or more days past due and government guaranteed, Fair value over/(under) contractual principal outstanding	(5,000,000)	(5,000,000)
All other performing loans	$ (374,000,000)	$ (529,000,000)

Represents the portion of loans held as assets for which the fair value option has been elected, valued at fair value.

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Fair Value Options Other Performing Loans.

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Guarantor Obligations, Net Of Other Commitments, Current Carrying Value

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- Definition

Long Term Beneficial Interests.

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Long term beneficial interests.

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- Definition

This item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of long-term debt instruments that have contractual principal amounts and for which the fair value option has been elected.

+ References

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This item represents the aggregate fair value of loans held as assets that are 90 days or more past due for which the fair value option has been elected.

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For loans held as assets for which the fair value option has been elected, this item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of those loans that are 90 days or more past due.

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This item represents the aggregate fair value of loans held as assets that are in nonaccrual status for which the fair value option has been elected, if the entity's policy is to recognize interest income separately from other changes in fair value.

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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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