CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Interest income
Interest and fees on loans and leases	$ 482	$ 557	$ 1,485	$ 1,190
Interest and fees on loans held for sale	8	8	22	22
Interest on investment securities	31	26	88	78
Interest on trading securities	6	6	20	28
Interest on other earning assets	6	1	11	5
Total interest income	533	598	1,626	1,323
Interest expense
Interest on deposits	20	42	67	122
Interest on trading liabilities	1	1	4	5
Interest on short-term borrowings	2	1	4	12
Interest on term borrowings	18	22	55	44
Total interest expense	41	66	130	183
Net interest income	492	532	1,496	1,140
Provision for credit losses	(85)	227	(245)	502
Net interest income after provision for credit losses	577	305	1,741	638
Noninterest income
Fixed income	96	111	324	319
Deposit transactions and cash management	44	42	130	103
Mortgage banking and title income	34	66	126	72
Brokerage, management fees and commissions	24	18	65	47
Bankcard income	15	10	40	24
Trust services and investment management	13	12	39	27
Securities gains (losses), net	1	(1)	12	(2)
Purchase accounting gain	0	532	(1)	532
Loss on debt extinguishment	(23)	0	(23)	0
Other income	43	33	117	82
Total noninterest income	247	823	829	1,204
Noninterest expense
Personnel expense	296	329	920	713
Net occupancy expense	33	39	103	80
Computer software	30	26	87	58
Operations services	24	16	59	39
Legal and professional fees	21	43	52	65
Contract employment and outsourcing	21	6	47	16
Amortization of intangible assets	14	15	42	25
Equipment expense	12	12	35	29
Communications and delivery	9	10	28	21
Contributions	6	39	12	40
Other expense	60	52	182	124
Total noninterest expense	526	587	1,567	1,210
Income before income taxes	298	541	1,003	632
Income tax expense	63	2	222	20
Net income	235	539	781	612
Net income attributable to noncontrolling interest	3	3	9	8
Net income attributable to controlling interest	232	536	772	604
Preferred stock dividends	8	13	29	16
Net income available to common shareholders	$ 224	$ 523	$ 743	$ 588
Basic earnings per common share (in dollars per share)	$ 0.41	$ 0.95	$ 1.35	$ 1.50
Diluted earnings per common share (in dollars per share)	$ 0.41	$ 0.95	$ 1.34	$ 1.50
Weighted average common shares (in shares)	545,818	549,690	549,434	391,699
Diluted average common shares (in shares)	549,819	550,846	554,199	392,713