Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Allowance for credit losses	$ 260	$ 170
Share-based compensation expense	36	26
Accrued compensation	82	77
Loans and debt securities	0	113
Lease liability	112	105
Net operating loss carryforwards	1,650	7
Other	205	56
Deferred tax assets	2,345	554
Valuation allowance	(6)	(7)
Net deferred tax assets after valuation allowance	2,339	547
Deferred tax liabilities:
Derivative equity warrant assets	(80)	(82)
Net unrealized gains on cash flow hedge derivatives	(17)	(33)
Loans and debt securities	(1,773)	0
Non-marketable and other equity securities	(128)	(219)
Premises and equipment	(54)	(41)
Right-of-use asset and deferred rent assets	(89)	(81)
Goodwill and intangibles	(24)	(24)
Merger-related fair value adjustments	(15)	(28)
Other	(6)	(15)
Deferred tax liabilities	(2,186)	(523)
Net deferred tax assets (liabilities)	$ 153	$ 24