Allowance for Credit Losses - Accrued Interest Receivables (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Credit Loss [Abstract]
Loans	$ 264	$ 259
Securities held-to-maturity	56	57
Other financial assets measured at amortized cost	58	19
Securities available-for-sale	97	87
Total accrued interest receivables	475	422
Allowance for credit losses	0	0
Accrued interest receivables, net	$ 475	$ 422

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

No definition available.

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- Definition

Interest Receivable, Allowance For Credit Loss

+ References

No definition available.

+ Details

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Balance Type:	credit
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- Definition

Interest Receivables, Before Allowance For Credit Loss

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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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

+ Details

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- Definition

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

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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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 946
-SubTopic 310
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480833/946-310-45-1

Reference 2: 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

+ Details

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