Settlement and Other Risk Management - Estimated Settlement Exposure (Details) - Guarantee Obligations - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Risks Inherent in Servicing Assets and Servicing Liabilities
Gross settlement exposure	$ 70,079	$ 64,885
Risk mitigation arrangements applied to settlement exposure 1	(10,568)	(9,224)
Net settlement exposure 1	$ 59,511	$ 55,661

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_RisksInherentInServicingAssetsAndServicingLiabilitiesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration