Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
INTEREST INCOME:
Loans and leases	$ 424	$ 386	$ 817	$ 769
Securities and money market investments	49	45	85	85
Total interest income	473	431	902	854
INTEREST EXPENSE:
Interest-bearing checking and money market accounts	24	7	32	16
Savings accounts	10	7	18	13
Certificates of deposit	12	14	23	32
Borrowed funds	68	72	138	144
Total interest expense	114	100	211	205
Net interest income	359	331	691	649
Provision for credit losses	9	(4)	7
Net interest income after provision for credit losses	350	335	684	649
NON-INTEREST INCOME:
Fee income	6	6	12	11
Bank-owned life insurance	7	8	14	15
Net loss on securities			(1)
Other	5	2	7	4
Total non-interest income	18	16	32	30
Operating expenses:
Compensation and benefits	79	74	159	152
Occupancy and equipment	22	22	45	43
General and administrative	33	33	64	66
Total operating expenses	134	129	268	261
Merger-related expenses	4	10	11	10
Total non-interest expense	138	139	279	271
Income before income taxes	230	212	437	408
Income tax expense	59	60	111	111
Net income	171	152	326	297
Preferred stock dividends	8	8	16	16
Net income available to common shareholders	$ 163	$ 144	$ 310	$ 281
Basic earnings per common share	$ 0.34	$ 0.30	$ 0.66	$ 0.60
Diluted earnings per common share	$ 0.34	$ 0.30	$ 0.66	$ 0.60
Net income	$ 171	$ 152	$ 326	$ 297
Other comprehensive income (loss), net of tax:
Change in net unrealized gain (loss) on securities available-for-sale net of tax of $68; ($16); $150 and $25, respectively	(176)	42	(391)	(66)
Change in pension and post-retirement obligations, net of tax of$0; $0; $0 and ($1), respectively	(1)	(1)	(1)	2
Change in net unrealized (loss) gain on cash flow hedges, net of tax of $(3); $0; $(7) and ($1), respectively	6		18	3
Reclassification adjustment for defined benefit pension plan,net of tax of $0; ($1); $0 and ($1), respectively	1	2	1	3
Reclassification adjustment for net gain on cash flow hedges included in net income, net of tax $0; $(2); $(2) and ($3), respectively	1	4	5	8
Total other comprehensive income (loss), net of tax	(169)	47	(368)	(50)
Total comprehensive income (loss), net of tax	$ 2	$ 199	$ (42)	$ 247