Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest Income
Loans	$ 764	$ 748	$ 713
Investment securities	46	70	77
Interest-earning deposits and other	0	1	4
Total interest income	810	819	794
Interest Expense
Deposits	32	81	138
Short-term Federal Home Loan Bank advances and other	4	16	59
Long-term Federal Home Loan Bank advances	13	12	7
Other long-term debt	14	25	28
Total interest expense	63	134	232
Net interest income	747	685	562
(Benefit) provision for credit losses	(112)	149	18
Net interest income after provision (benefit) for credit losses	859	536	544
Noninterest Income
Net gain on loan sales	655	971	335
Loan fees and charges	141	150	100
Net return on mortgage servicing rights	23	10	6
Loan administration income	121	84	30
Deposit fees and charges	34	32	38
Other noninterest income	70	63	101
Total noninterest income	1,044	1,310	610
Noninterest Expense
Compensation and benefits	533	466	377
Commissions	194	232	111
Occupancy and equipment	188	176	161
Loan processing expense	86	83	80
Legal and professional expense	45	31	27
Federal insurance premiums	20	24	20
Intangible asset amortization	11	13	15
General, administrative and other	136	117	97
Total noninterest expense	1,213	1,142	888
Income before income taxes	690	704	266
Provision for income taxes	157	166	48
Net income	$ 533	$ 538	$ 218
Net income per share
Basic (in usd per share)	$ 10.10	$ 9.59	$ 3.85
Diluted (in usd per share)	$ 9.96	$ 9.52	$ 3.80
Weighted average shares outstanding
Basic (in shares)	52,792,931	56,094,542	56,584,238
Diluted (in shares)	53,519,086	56,505,813	57,238,978