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Variable Interest Entities and Securitizations - External Debt and Receivable Balances of Securitization Programs (Detail) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Credit Card
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Securities held by third-party investors, non-mortgage	$ 14,175	$ 15,798
Receivables in the trust, non-mortgage	28,451	31,625
Cash balance of spread or reserve accounts, non-mortgage	0	0
Auto
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Securities held by third-party investors, non-mortgage	2,966	2,010
Receivables in the trust, non-mortgage	3,221	2,192
Cash balance of spread or reserve accounts, non-mortgage	10	7
Home Loan
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Securities held by third-party investors, mortgage	913	962
Receivables in the trust, mortgage	927	978
Cash balance of spread or reserve accounts, mortgage	$ 15	$ 17

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- Definition

Continuing Involvement with Continued to be Recognized Transferred Financial Assets, Cash Balance in Spread and Reserve Accounts

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- Definition

Amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction that have been derecognized. Continuing involvement includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
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Amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction that continue to be recognized in the statement of financial position. Includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets.

+ References

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-SubTopic 20
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