Allowance for Credit Losses - Accrued Interest Receivables (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Accrued interest receivables:
Loans	$ 255	$ 249
Securities held-to-maturity	72	67
Other financial assets measured at amortized cost	43	25
Securities available-for-sale	168	117
Total accrued interest receivables	538	458
Allowance for credit losses	0	0
Accrued interest receivables, net	$ 538	$ 458

Debt Securities, Available-for-Sale, Accrued Interest, Before Allowance For Credit Loss

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- Definition

Interest Receivable, Allowance For Credit Loss

+ References

No definition available.

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- Definition

Interest Receivables, Before Allowance For Credit Loss

+ References

No definition available.

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- Definition

Other Financial Assets, Measured At Cost. Accrued Interest, Before Allowance For Credit Loss

+ References

No definition available.

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- Definition

Amount, before allowance for credit loss, of accrued interest on investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

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- Definition

Amount, before allowance for credit loss, of accrued interest on financing receivable.

+ References

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- References

No definition available.

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- Definition

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3)(a)(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 310
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477802/946-310-45-1

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