Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income before noncontrolling interests	$ 1,609	$ 2,073	$ 1,294
Change in foreign currency cumulative translation gains and losses:
Foreign currency translation gains (losses), net of hedges	(54)	(2)	16
Related tax benefit (expense)	15	0	(5)
Change in unrealized gains and losses on AFS securities:
Unrealized holding gains (losses)	(2,503)	(644)	606
Related tax benefit (expense)	686	179	(168)
Reclassification adjustment for (gains) losses included in net income	(21)	(31)	(61)
Related tax expense (benefit)	6	9	17
Cumulative-effect adjustment for unrealized losses on securities transferred from AFS to HTM	0	(132)	0
Related tax benefit	0	37	0
Amortization of unrealized holding (gains) losses on securities transferred from AFS to HTM	13	(1)	2
Related tax expense (benefit)	(4)	0	(1)
Change in unrealized gains and losses on cash flow hedges:
Unrealized gains (losses)	0	0	232
Related tax (expense) benefit	0	0	(64)
Reclassification adjustment for gains included in net income	(56)	(63)	(50)
Related tax expense	16	17	14
Other comprehensive income (loss), net of tax	(1,902)	(632)	538
Comprehensive income (loss)	(293)	1,441	1,832
Comprehensive (income) loss attributable to noncontrolling interests	63	(240)	(86)
Comprehensive income (loss) attributable to SVBFG	$ (230)	$ 1,201	$ 1,746