CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Interest income
Interest and fees on loans and leases	$ 507	$ 327
Interest and fees on loans held for sale	7	7
Interest on securities available for sale	29	27
Interest on trading securities	7	13
Interest on other earning assets	2	4
Total interest income	552	378
Interest expense
Interest on deposits	24	54
Interest on trading liabilities	1	3
Interest on short-term borrowings	1	10
Interest on term borrowings	18	8
Total interest expense	44	75
Net interest income	508	303
Provision for credit losses	(45)	154
Net interest income after provision for credit losses	553	149
Noninterest income
Fixed income	126	96
Mortgage banking and title income	53	2
Deposit transactions and cash management	42	30
Brokerage, management fees and commissions	20	16
Trust services and investment management	12	7
Bankcard income	11	7
Other income	34	16
Total noninterest income	298	174
Noninterest expense
Personnel expense	318	183
Net occupancy expense	37	20
Computer software	28	16
Legal and professional fees	14	9
Operations services	16	12
Equipment expense	11	9
Amortization of intangible assets	14	5
Other expense	106	48
Total noninterest expense	544	302
Income before income taxes	307	21
Income tax expense	71	5
Net income	236	16
Net income attributable to noncontrolling interest	3	3
Net income attributable to controlling interest	233	13
Preferred stock dividends	8	1
Net income available to common shareholders	$ 225	$ 12
Basic earnings per common share (in dollars per share)	$ 0.41	$ 0.04
Diluted earnings per common share (in dollars per share)	$ 0.40	$ 0.04
Weighted average common shares (in shares)	552,249	311,597
Diluted average common shares (in shares)	557,532	313,170