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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
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-Subparagraph (SX 210.9-03(10)(1))
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-Name Accounting Standards Codification
-Topic 350
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 55
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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
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Goodwill	$ 375		$ 375
Operating segments \| Silicon Valley Bank
Segment Reporting Information [Line Items]
Depreciation and amortization	10	$ 7
Operating segments \| SVB Securities
Segment Reporting Information [Line Items]
Goodwill	174	$ 138
Operating segments \| Private bank
Segment Reporting Information [Line Items]
Goodwill	$ 201