Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Segment Reporting - Segment Information (Additional Information) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Goodwill	$ 143		$ 143		$ 143
Operating segments \| Global Commercial Bank
Segment Reporting Information [Line Items]
Depreciation and amortization	8	$ 6	14	$ 11
Operating segments \| SVB Leerink
Segment Reporting Information [Line Items]
Goodwill	$ 138	$ 138	$ 138	$ 138