Segment Reporting - Segment Information (Additional Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Goodwill	$ 375	$ 375	$ 143
Operating segments | Silicon Valley Bank
Segment Reporting Information [Line Items]
Depreciation and amortization	49	34	$ 25
Operating segments | SVB Securities
Segment Reporting Information [Line Items]
Goodwill	174	138
Operating segments | SVB Private Bank
Segment Reporting Information [Line Items]
Goodwill	$ 201	$ 87