CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Interest income
Interest and fees on loans and leases	$ 496	$ 306	$ 1,003	$ 633
Interest and fees on loans held for sale	7	7	14	13
Interest on securities available for sale	29	24	58	52
Interest on trading securities	7	9	14	23
Interest on other earning assets	3	0	5	4
Total interest income	542	346	1,094	725
Interest expense
Interest on deposits	24	25	48	79
Interest on trading liabilities	2	1	3	4
Interest on short-term borrowings	1	1	2	12
Interest on term borrowings	18	14	37	22
Total interest expense	45	41	90	117
Net interest income	497	305	1,004	608
Provision for credit losses	(115)	121	(160)	275
Net interest income after provision for credit losses	612	184	1,164	333
Noninterest income
Fixed income	102	112	228	208
Mortgage banking and title income	38	4	91	7
Deposit transactions and cash management	44	31	86	61
Brokerage, management fees and commissions	21	14	41	29
Trust services and investment management	14	8	26	15
Bankcard income	15	7	25	14
Securities gains (losses), net	11	(1)	11	(1)
Other income	40	31	75	48
Total noninterest income	285	206	583	381
Noninterest expense
Personnel expense	306	200	624	384
Net occupancy expense	33	21	71	41
Computer software	30	17	57	32
Operations services	19	12	35	23
Legal and professional fees	16	13	31	22
Equipment expense	12	9	23	17
Amortization of intangible assets	14	5	28	11
Other expense	68	43	173	93
Total noninterest expense	498	320	1,042	623
Income before income taxes	399	70	705	91
Income tax expense	88	13	159	18
Net income	311	57	546	73
Net income attributable to noncontrolling interest	3	3	6	6
Net income attributable to controlling interest	308	54	540	67
Preferred stock dividends	13	2	21	3
Net income available to common shareholders	$ 295	$ 52	$ 519	$ 64
Basic earnings per common share (in dollars per share)	$ 0.54	$ 0.17	$ 0.94	$ 0.21
Diluted earnings per common share (in dollars per share)	$ 0.53	$ 0.17	$ 0.93	$ 0.21
Weighted average common shares (in shares)	550,297	312,090	551,268	311,843
Diluted average common shares (in shares)	556,763	312,936	557,146	312,792