Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
INTEREST INCOME:
Loans and leases	$ 1,161	$ 424	$ 2,028	$ 817
Securities and money market investments	337	49	504	85
Total interest income	1,498	473	2,532	902
INTEREST EXPENSE:
Interest-bearing checking and money market accounts	232	24	389	32
Savings accounts	40	10	79	18
Certificates of deposit	169	12	256	23
Borrowed funds	157	68	353	138
Total interest expense	598	114	1,077	211
Net interest income	900	359	1,455	691
Provision for (recovery of) credit losses	49	9	219	7
Net interest income after provision for credit loan losses	851	350	1,236	684
NON-INTEREST INCOME:
Fee income	48	6	75	12
Bank-owned life insurance	11	7	21	14
Net (loss) on securities	(1)	0	(1)	(1)
Net return on mortgage servicing rights	25	0	47	0
Net gain on loan sales and securitizations	25	0	45	0
Net Loan administration income	39	0	46	0
Bargain purchase gain	141	0	2,142	0
Other	14	5	25	7
Total non-interest income	302	18	2,400	32
NON-INTEREST EXPENSE:
Compensation and benefits	289	79	508	159
Occupancy and equipment	50	22	87	45
General and administrative	176	33	312	64
Total operating expense	515	134	907	268
Amortization of intangibles	37	0	54	0
Merger-related and restructuring expenses	109	4	176	11
Total non-interest expense	661	138	1,137	279
Income before income taxes	492	230	2,499	437
Income tax expense	79	59	80	111
Net income	413	171	2,419	326
Preferred stock dividends	8	8	16	16
Net income available to common stockholders	$ 405	$ 163	$ 2,403	$ 310
Basic (in usd per share)	$ 0.55	$ 0.34	$ 3.37	$ 0.66
Diluted (in usd per share)	$ 0.55	$ 0.34	$ 3.37	$ 0.66
Net income	$ 413	$ 171	$ 2,419	$ 326
Other comprehensive loss, net of tax:
Change in net unrealized loss on securities available for sale, net of tax of $36; $68; $15 and $150;, respectively	(102)	(176)	(42)	(391)
Change in pension and post-retirement obligations, net of tax of $(1); $0; $(1) and $0;, respectively	1	(1)	2	(1)
Change in net unrealized gain on cash flow hedges, net of tax of $(32); $(3); $(9) and $(7);, respectively	92	6	25	18
Reclassification adjustment for defined benefit pension plan, net of tax of $1; $0; $0 and $0;, respectively	0	1	1	1
Reclassification adjustment for net (loss) gain on cash flow hedges included in net income, net of tax $1; $0; $3 and $(2);, respectively	(4)	1	(8)	5
Total other comprehensive loss, net of tax	(13)	(169)	(22)	(368)
Total comprehensive income (loss), net of tax	$ 400	$ 2	$ 2,397	$ (42)