Western Alliance Bancorporation (WAL) 10-Q 8 May 23 2023 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2023	May 01, 2023
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2023
Document Transition Report	false
Entity File Number	001-32550
Entity Registrant Name	WESTERN ALLIANCE BANCORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	88-0365922
Entity Address, Address Line One	One E. Washington Street, Suite 1400
Entity Address, City or Town	Phoenix
Entity Address, State or Province	AZ
Entity Address, Postal Zip Code	85004
City Area Code	602
Local Phone Number	389-3500
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001212545
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		109,501,483
Common Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, $0.0001 Par Value
Trading Symbol	WAL
Security Exchange Name	NYSE
Noncumulative Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares, Each Representing a 1/400th Interest in a Share of 4.250% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series A
Trading Symbol	WAL PrA
Security Exchange Name	NYSE

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Mar. 31, 2023		Dec. 31, 2022
Assets:
Cash and due from banks	$ 229		$ 259
Interest-bearing deposits in other financial institutions	3,410		784
Cash and cash equivalents	3,639		1,043
Debt Securities, Available-for-sale, Amortized Cost	8,434		7,973
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	2.2		0
Debt Securities, Available-for-sale	7,645	[1]	7,092	[2]
Debt Securities, Held-to-maturity, Allowance for Credit Loss	(6.5)		(5.2)
Debt Securities, Held-to-maturity, Fair Value	1,185		1,112
Debt Securities, Held-to-maturity, Net of Allowance	1,319		1,284
Investment securities - equity	141	[1]	160	[2]
Investments in restricted stock, at cost	388		224
Loans Receivable Held-for-sale, Amount	7,022		1,184
Loans:
Loans and Leases Receivable, Net of Deferred Income	46,435		51,862
Less: Allowance for credit losses	(304.7)		(309.7)
Net loans held for investment	46,130		51,552
Servicing Asset	910		1,148
Premises and equipment, net	293		276
Operating Lease, Right-of-Use Asset	157		163
Bank owned life insurance	183		182
Goodwill and intangible assets, net	677		680
Deferred Income Tax Assets, Net	289		311
Investments in LIHTC and renewable energy	611		624
Other assets	1,643		1,811
Total assets	71,047		67,734
Deposits:
Non-interest-bearing demand	16,465		19,691
Interest-bearing	31,122		33,953
Total deposits	47,587		53,644
Other borrowings	15,853		6,299
Qualifying debt	895		893
Operating Lease, Liability	184		185
Other liabilities	1,007		1,357
Total liabilities	65,526		62,378
Commitments and Contingencies
Preferred Stock, Par or Stated Value Per Share	$ 0.0001		$ 0.0001
Preferred Stock, Liquidation Preference Per Share	$ 25		$ 25
Preferred Stock, Shares Authorized	20,000,000		20,000,000
Preferred Stock, Shares Outstanding	12,000,000		12,000,000
Preferred Stock, Value, Issued	$ 295		$ 295
Common stock, par value	$ 0.0001		$ 0.0001
Common stock, shares authorized	200,000,000		200,000,000
Common Stock, Shares, Issued	112,209,478		111,465,292
Treasury Stock, Shares	2,694,170		2,550,766
Stockholders’ equity:
Common Stock, Value, Issued	$ 2,170		$ 2,163
Treasury Stock, Value	(116)		(105)
Accumulated other comprehensive loss	(591.5)		(661)
Retained earnings	3,764		3,664
Total stockholders’ equity	5,520.5		5,356
Total liabilities and stockholders’ equity	$ 71,047		$ 67,734
[1]ratings differ, the Company uses an average of the available ratings by major credit agencies.[2]For rated securities, if ratings differ, the Company uses an average of the available ratings by major credit agencies.

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale, Amortized Cost	$ 8,434	$ 7,973
Debt Securities, Held-to-maturity, Fair Value	$ 1,185	$ 1,112
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	112,209,478	111,465,292
Treasury Stock, Value	$ 116	$ 105

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands, shares in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Interest income:
Loans, including fees	$ 832,700	$ 434,700
Investment securities	94,300	46,700
Dividends and other	41,900	3,100
Total interest income	968,900	484,500
Interest expense:
Deposits	231,600	14,100
Qualifying debt	9,300	8,400
Other borrowings	118,100	12,500
Total interest expense	359,000	35,000
Net interest income	609,900	449,500
Provision for credit losses	19,400	9,000
Net interest income after provision for credit losses	590,500	440,500
Non-interest income:
Loan servicing fees, net	41,900	41,100
Net gain on loan origination and sale activities	31,400	36,900
Service charges and fees	9,500	7,000
Commercial banking related income	6,200	5,100
Gain on recovery from credit guarantees	3,300	2,300
Income from equity instruments	1,400	4,100
Gain on sales of investment securities	(12,500)	(6,900)
Assets, Fair Value Adjustment	(147,800)	(6,600)
Other income	8,600	9,500
Total non-interest income	(58,000)	(106,300)
Non-interest expense:
Salaries and employee benefits	148,900	138,300
Deposit costs	86,900	9,300
Data processing	26,400	17,600
Legal, professional, and directors' fees	23,100	24,000
Occupancy	16,500	12,800
Insurance	15,700	7,200
Expense Related to Distribution or Servicing and Underwriting Fees	13,800	10,800
Business development and marketing	5,200	4,400
Loan Processing Fee	4,400	6,500
Gain (Loss) on Extinguishment of Debt	(12,700)	0
Other expense	19,700	17,700
Total non-interest expense	347,900	248,600
Income before provision for income taxes	184,600	298,200
Income Tax Expense (Benefit)	42,400	58,100
Net income	142,200	240,100
Preferred Stock Dividends, Income Statement Impact	3,200	3,200
Net income available to common shareholders	$ 139,000	$ 236,900
Earnings per share:
Basic	$ 1.29	$ 2.23
Diluted	$ 1.28	$ 2.22
Weighted average number of common shares outstanding:
Basic	108.1	106
Diluted	108.3	106.6
Dividends declared per common share	$ 0.36	$ 0.35

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 142.2	$ 240.1
Other comprehensive income (loss), net:
Unrealized gain (loss) on AFS securities, net of tax effect of $(20.7) and $80.8, respectively	(20.7)	80.8
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax	60.1	(247.9)
Unrealized (loss) gain on junior subordinated debt, net of tax effect of $0.4 and $(0.7), respectively	(0.4)	(0.7)
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, after Tax	1.1	2.2
Realized loss (gain) on sale of AFS securities included in income, net of tax effect of $(3.2) and $1.8, respectively	3.2	1.8
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	9.3	(5.1)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Tax	(0.4)	0
Net other comprehensive income (loss)	69.5	(250.8)
Comprehensive income (loss)	211.7	(10.7)
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax	$ 1.2	$ 0

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid in Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
Beginning balance, shares at Dec. 31, 2021		12,000,000	106,600,000
Beginning balance at Dec. 31, 2021	$ 4,962.6	$ 294.5	$ 0	$ 1,966.2	$ 86.8	$ 15.7	$ 2,773
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	240.1						240.1
Restricted stock grants, net, shares			(600,000)
Restricted stock grants, net	9.8			9.8
Treasury Stock, Shares, Acquired			200,000
Treasury Stock, Value, Acquired, Cost Method	$ 17.3				17.3
Stock Issued During Period, Shares, New Issues	1,300,000		1,300,000
Stock Issued During Period, Value, New Issues	$ 107.7			107.7
Dividends, Preferred Stock, Cash	(3.2)						(3.2)
Dividends, Common Stock, Cash	(37.3)						(37.3)
Other comprehensive (loss) income, net	(250.8)					(250.8)
Ending balance, shares at Mar. 31, 2022		12,000,000	108,300,000
Ending Balance at Mar. 31, 2022	5,011.6	$ 294.5	$ 0	2,083.7	104.1	(235.1)	2,972.6
Beginning balance, shares at Dec. 31, 2022		12,000,000	108,900,000
Beginning balance at Dec. 31, 2022	5,356	$ 294.5	$ 0	2,163.7	105.3	(661)	3,664.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	142.2						142.2
Restricted stock grants, net, shares			700,000
Restricted stock grants, net	6.1			6.1
Treasury Stock, Shares, Acquired			100,000
Treasury Stock, Value, Acquired, Cost Method	10.7				10.7
Dividends, Preferred Stock, Cash	(3.2)						(3.2)
Dividends, Common Stock, Cash	(39.4)						(39.4)
Other comprehensive (loss) income, net	69.5					69.5
Ending balance, shares at Mar. 31, 2023		12,000,000	109,500,000
Ending Balance at Mar. 31, 2023	$ 5,520.5	$ 294.5	$ 0	$ 2,169.8	$ 116	$ (591.5)	$ 3,763.7

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net income	$ 142.2	$ 240.1
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	19.4	9
Depreciation and amortization	16.5	11.1
Stock-based compensation	6.1	9.8
Deferred income taxes	(5.5)	35.1
Amortization of net premiums for investment securities	2	6.9
Amortization of tax credit investments	11.3	13.4
Amortization of operating lease right of use asset	6	5.4
Amortization of net deferred loan fees and net purchase premiums	(22.6)	(12.5)
Payments for Origination and Purchases of Loans Held-for-sale	8,067.2	13,060
Proceeds from Sale and Collection of Loans Held-for-sale	8,265.4	13,663
Servicing Asset at Fair Value, Additions	142.4	204.1
Net losses (gains) on:
Servicing Asset at Fair Value, Period Increase (Decrease)	(43.5)	55.4
Assets, Fair Value Adjustment, Non-Cash	149.8	6.7
Gain (Loss) on Sale of Investments	(12.5)	(6.9)
Gain (Loss) on Extinguishment of Debt	(12.7)	0
Other Operating Activities, Cash Flow Statement	3.6	(0.7)
Other assets and liabilities, net	(63.4)	(39.4)
Net cash provided by operating activities	357.3	(622.9)
Investment securities - AFS
Payments to Acquire Debt Securities, Available-for-sale	931.3	830.6
Principal pay downs and maturities	61.1	257.1
Proceeds from sales	429.3	114.2
Debt Securities, Held-to-maturity [Abstract]
Purchases	44	60.5
Principal pay downs and maturities	7.7	6.7
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Purchases	(0.5)	(4.7)
Redemptions	0	0.1
Proceeds from Sale of Mortgage Servicing Rights (MSR)	335.2	24.1
Purchase of Other Investments	(172.6)	(66.1)
Net increase in loans HFI	(1,003.5)	(1,961.7)
Purchase of premises, equipment, and other assets, net	(28.5)	(26.2)
Payments to Acquire Businesses, Net of Cash Acquired	0	50
Net cash used in investing activities	(1,347.1)	2,597.6
Cash flows from financing activities:
Net (decrease) increase in deposits	(6,056.6)	4,547.5
Repayments of Subordinated Debt	(257.3)	(9.5)
Net increase (decrease) in short-term borrowings	9,952.9	(514.5)
Cash paid for tax withholding on vested restricted stock and other	10.7	17.3
Cash dividends paid on common stock and preferred stock	42.6	40.5
Proceeds from Issuance of Common Stock	0	94.9
Net cash provided by financing activities	3,585.7	4,060.6
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	2,595.9	2,085.9
Cash, cash equivalents, and restricted cash at beginning of period	1,043.4	516.4
Cash, cash equivalents, and restricted cash at end of period	3,639.3	2,602.3
Cash paid (refunded) during the period for:
Interest Paid, Excluding Capitalized Interest, Operating Activities	329.5	25.9
Income Taxes Paid, Net	(7.5)	24.2
Transfers of mortgage-backed securities in settlement of secured borrowings	125.2	146.7
Net increase (decrease) in unfunded commitments and obligations	(5.5)	157.4
Net increase in unsettled loans HFI and investment securities purchased	31.8	569.1
Transfers of securitized LHFS to AFS securities	43.9	40.4
Transfer of Portfolio Loans and Leases to Held-for-sale	$ 5,910.4	$ 0

Deposits (Tables)

Deposits (Tables) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Statement of Financial Position [Abstract]
Non-interest-bearing demand	$ 16,465		$ 19,691
Interest-Bearing Domestic Deposit, Demand	10,719		9,507
Deposits, Savings Deposits	13,845		19,397
Time Deposits, $250,000 or more	4,998		3,815
Time Deposits, Less than $250,000	1,560		1,234
Deposits	47,587		53,644
Reciprocal Deposits	8,000		2,800
Deposits, earnings credit	13,400		12,900
Deposits costs, deposits with earnings credits	85.6	$ 8.7
Deposits, Wholesale	$ 8,100		$ 4,800

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Nature of operations WAL is a bank holding company headquartered in Phoenix, Arizona, incorporated under the laws of the state of Delaware. WAL provides a full spectrum of customized loan, deposit, and treasury management capabilities, including 24/7 funds transfer and other digital payment offerings through its wholly-owned banking subsidiary, WAB. WAB operates the following full-service banking divisions: ABA, BON, FIB, Bridge, and TPB. The Company also serves business customers through a national platform of specialized financial services, including mortgage banking services through AmeriHome, and digital payment services for the class action legal industry through DST. In addition, the Company has the following non-bank subsidiaries: CSI, a captive insurance company formed and licensed under the laws of the State of Arizona and established as part of the Company's overall enterprise risk management strategy, and WATC, which provides corporate trust services and levered loan administration solutions. Basis of presentation The accompanying Unaudited Consolidated Financial Statements as of March 31, 2023 and for the three months ended March 31, 2023 and 2022 have been prepared in accordance with GAAP for interim financial information and Article 10 of Regulation S-X and, therefore, do not include all of the information and footnotes required by GAAP for complete financial statements. Accordingly, these statements should be read in conjunction with the Company's audited Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2022. The accounts of the Company and its consolidated subsidiaries are included in the Consolidated Financial Statements. The information furnished in these interim statements reflects all adjustments that are, in the opinion of management, necessary for a fair statement of the results for each respective period presented. Such adjustments are of a normal, recurring nature. The results of operations in the interim statements are not necessarily indicative of the results that may be expected for any other quarter or for the full year. Recent accounting pronouncements Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method In March 2023, the FASB issued guidance within ASU 2023-02, Investments — Equity Method and Joint Ventures (Topic 323). The amendments in this update permit entities to elect to account for tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. Previously this option was only permitted for LIHTC investments. Additionally, the amendments in this update require that all tax equity investments accounted for using the proportional amortization method apply the delayed equity contribution guidance in Subtopic 323-740 and disclosure of the nature of an entity's tax equity investments and their effect on an entity's financial position and results of operations. The amendments in this update are effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years and are applied on a modified retrospective or a retrospective basis. The adoption of this guidance is not expected to have a material impact on the Company's Consolidated Financial Statements. Recently adopted accounting guidance Troubled Debt Restructurings and Vintage Disclosures In March 2022, the FASB issued guidance within ASU 2022-02, Financial Instruments—Credit Losses (Topic 326). The amendments in this update eliminate the accounting guidance and related disclosures for TDRs by creditors in Subtopic 310-40, Receivables—Troubled Debt Restructurings by Creditors , while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty and requiring an entity to disclose current-period gross writeoffs by year of origination for financing receivables and net investments in leases within the scope of Subtopic 326-20, Financial Instruments—Credit Losses—Measured at Amortized Cost . The Company adopted this accounting guidance prospectively on January 1, 2023. The adoption of this guidance did not have a material impact on the Company's Consolidated Financial Statements. Use of estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Management's estimates and judgments are ongoing and are based on experience, current and expected future conditions, third-party evaluations and various other assumptions that management believes are reasonable under the circumstances. The results of these estimates form the basis for making judgments about the carrying values of assets and liabilities, as well as identifying and assessing the accounting treatment with respect to commitments and contingencies. Actual results may differ from those estimates and assumptions used in the Consolidated Financial Statements and related notes. Material estimates that are susceptible to significant changes in the near term relate to: 1) the determination of the ACL; 2) certain assets and liabilities carried at fair value; and 3) accounting for income taxes. Principles of consolidation As of March 31, 2023, WAL has the following significant wholly-owned subsidiaries: WAB and eight unconsolidated subsidiaries used as business trusts in connection with the issuance of trust-preferred securities. WAB has the following significant wholly-owned subsidiaries: 1) WABT, which holds certain investment securities, municipal and nonprofit loans, and leases; 2) WA PWI, which holds interests in certain limited partnerships invested primarily in low income housing tax credits and small business investment corporations; 3) Helios Prime, which holds interests in certain limited partnerships invested in renewable energy projects; 4) BW Real Estate, Inc., which operates as a real estate investment trust and holds certain of WAB's real estate loans and related securities; and 5) Western Finance Company, which purchases and originates equipment finance leases and provides mortgage banking services through its wholly-owned subsidiary, AmeriHome. The Company does not have any other significant entities that should be consolidated. All significant intercompany balances and transactions have been eliminated in consolidation. Reclassifications Certain amounts in the Consolidated Income Statements for the prior periods have been reclassified to conform to the current presentation. The reclassifications had no effect on net income or stockholders’ equity as previously reported. Goodwill and other intangible assets The Company evaluated whether the recent events in the banking sector may give rise to a triggering event and elected to perform a Step 0 goodwill impairment assessment, which included analyzing qualitative factors applicable to the Company, the financial performance of the Company, and valuation metrics of publicly traded companies comparable to the Company and its reporting units. As of March 31, 2023, the Company does not believe that these events or circumstances have significantly altered the long-term financial performance of the Company. Accordingly, it was determined that it is more likely than not that the fair value of the Company and its reporting units exceeds their respective carrying values as of March 31, 2023. The Company's goodwill totaled $527 million at March 31, 2023 and December 31, 2022, with $290 million and $237 million allocated to the Commercial and Consumer Related segments, respectively.

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Investment Securities	d fair values of investment securities at March 31, 2023 and December 31, 2022 are summarized as follows: March 31, 2023 Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value (in millions) Held-to-maturity Private label residential MBS $ 195 $ — $ (38) $ 157 Tax-exempt 1,130 2 (104) 1,028 Total HTM securities $ 1,325 $ 2 $ (142) $ 1,185 Available-for-sale debt securities CLO $ 2,499 $ — $ (63) $ 2,436 Commercial MBS issued by GSEs 70 — (8) 62 Corporate debt securities 411 — (53) 358 Private label residential MBS 1,399 — (224) 1,175 Residential MBS issued by GSEs 2,136 1 (349) 1,788 Tax-exempt 945 1 (86) 860 U.S. Treasury securities 900 — — 900 Other 74 3 (11) 66 Total AFS debt securities $ 8,434 $ 5 $ (794) $ 7,645 December 31, 2022 Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value (in millions) Held-to-maturity Private label residential MBS $ 198 $ — $ (39) $ 159 Tax-exempt 1,091 — (138) 953 Total HTM securities $ 1,289 $ — $ (177) $ 1,112 Available-for-sale debt securities CLO $ 2,796 $ — $ (90) $ 2,706 Commercial MBS issued by GSEs 104 1 (8) 97 Corporate debt securities 429 — (39) 390 Private label residential MBS 1,442 — (243) 1,199 Residential MBS issued by GSEs 2,123 — (383) 1,740 Tax-exempt 1,004 2 (115) 891 Other 75 6 (12) 69 Total AFS debt securities $ 7,973 $ 9 $ (890) $ 7,092 In addition, the Company held equity securities, which primarily consisted of preferred stock and CRA investments, with a fair value of $141 million and $160 million at March 31, 2023 and December 31, 2022, respectively. Unrealized losses on equity securities of $8.5 million and $6.7 million for the three months ended March 31, 2023 and 2022, respectively, were recognized in earnings as a component of fair value loss adjustments. Securities with carrying amounts of approximately $ 6.5 billion 1.7 billion The following tables summarize the Company's AFS debt securities in an unrealized loss position at March 31, 2023 and December 31, 2022, aggregated by major security type and length of time in a continuous unrealized loss position: March 31, 2023 Less Than Twelve Months More Than Twelve Months Total Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (in millions) Available-for-sale debt securities CLO $ 39 $ 1,613 $ 24 $ 813 $ 63 $ 2,426 Commercial MBS issued by GSEs 1 23 8 37 9 60 Corporate debt securities (1) 6 61 47 290 53 351 Private label residential MBS 8 97 216 1,064 224 1,161 Residential MBS issued by GSEs 7 222 342 1,525 349 1,747 Tax-exempt 8 249 78 588 86 837 U.S. Treasury securities — 892 — — — 892 Other 2 18 8 36 10 54 Total AFS securities $ 71 $ 3,175 $ 723 $ 4,353 $ 794 $ 7,528 (1) Includes securities with an ACL that have a fair value of $87 million and unrealized losses of $20 million. December 31, 2022 Less Than Twelve Months More Than Twelve Months Total Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (in millions) Available-for-sale debt securities CLO $ 81 $ 2,467 $ 9 $ 216 $ 90 $ 2,683 Commercial MBS issued by GSEs 4 46 4 14 8 60 Corporate debt securities 28 263 11 120 39 383 Private label residential MBS 27 279 216 912 243 1,191 Residential MBS issued by GSEs 82 600 301 1,101 383 1,701 Tax-exempt 93 752 22 78 115 830 Other 4 26 8 26 12 52 Total AFS securities $ 319 $ 4,433 $ 571 $ 2,467 $ 890 $ 6,900 The total number of AFS debt securities in an unrealized loss position at March 31, 2023 was 811, compared to 832 at December 31, 2022. On a quarterly basis, the Company performs an impairment analysis on its AFS debt securities that are in an unrealized loss position at the end of the period to determine whether credit losses should be recognized on these securities. Qualitative considerations made by the Company in its impairment analysis are further discussed below. Government Issued Securities Commercial and residential MBS are issued by either government agencies or GSEs. These securities are either explicitly or implicitly guaranteed by the U.S. government and are highly rated by major rating agencies. Further, principal and interest payments on these securities continue to be made on a timely basis. Non-Government Issued Securities Qualitative factors used in the Company's credit loss assessment of its securities that are not issued and guaranteed by the U.S. government include consideration of any adverse conditions related to a specific security, industry, or geographic region of its securities, any credit ratings below investment grade, the payment structure of the security and the likelihood of the issuer to be able to make payments that increase in the future, and failure of the issuer to make any scheduled principal or interest payments. For the Company's corporate debt and tax-exempt securities, the Company also considers various metrics of the issuer including days of cash on hand, the ratio of long-term debt to total assets, the net change in cash between reporting periods, and consideration of any breach in covenant requirements. The Company's corporate debt securities are investment grade, issuers continue to make timely principal and interest payments, and the unrealized losses on these security portfolios primarily relate to changes in interest rates and other market conditions that are not considered to be credit-related issues. The Company continues to receive timely principal and interest payments on its tax-exempt securities and the majority of these issuers have revenues pledged for payment of debt service prior to payment of other types of expenses. In consideration of recent events related to the banking sector, the Company performed a targeted impairment analysis on its AFS debt securities issued by regional banks held in its corporate debt securities portfolio. The Company considered the issuer's credit ratings, probability of default, and other factors. As a result of the analysis, a $19.3 million provision for credit losses was recognized during the three months ended March 31, 2023, which included recognition of a $17.1 million charge-off for one debt security issued by a regional bank that was sold during the period. The Company does not intend to sell and it is more likely than not that the Company will not be required to sell the remainder of these regional bank debt securities prior to their anticipated recovery, therefore, no credit losses on the Company's remaining AFS securities portfolio have not been recognized during the three months ended March 31, 2023. For the Company's private label residential MBS, which consist of non-agency collateralized mortgage obligations that are secured by pools of residential mortgage loans, the Company also considers metrics such as securitization risk weight factor, current credit support, whether there were any mortgage principal losses resulting from defaults in payments on the underlying mortgage collateral, and the credit default rate over the last twelve months. These securities primarily carry investment grade credit ratings, principal and interest payments on these securities continue to be made on a timely basis, and credit support for these securities is considered adequate. The Company's CLO portfolio consists of highly rated securitization tranches, containing pools of medium to large-sized corporate, high yield loans. These are variable rate securities that have an investment grade rating of Single-A or better. Unrealized losses on these securities are primarily a function of the differential from the offer price and the valuation mid-market price as well as changes in interest rates. Unrealized losses on the Company's other securities portfolio relate to taxable municipal and trust preferred securities. The Company is continuing to receive timely principal and interest payments on its taxable municipal securities, these securities continue to be highly rated and the number of days of cash on hand is strong. The Company's trust preferred securities are investment grade and the issuers continue to make timely principal and interest payments. The following table presents a rollforward by major security type of the ACL on the Company's AFS debt securities: Three Months Ended March 31, 2023 Balance, Provision for Credit Losses Charge-offs Recoveries Balance, (in millions) Available for sale securities Corporate debt securities $ — $ 19.3 $ (17.1) $ — $ 2.2 There were no credit losses recognized on AFS securities during the three months ended March 31, 2022. The credit loss model under ASC 326-20, applicable to HTM debt securities, requires recognition of lifetime expected credit losses through an allowance account at the time the security is purchased. The following table presents a rollforward by major security type of the ACL on the Company's HTM debt securities: Three Months Ended March 31, 2023 Balance, Provision for Credit Losses Charge-offs Recoveries Balance, (in millions) Held-to-maturity debt securities Tax-exempt $ 5.2 $ 1.3 $ — $ — $ 6.5 Three Months Ended March 31, 2022: Balance, Provision for Credit Losses Charge-offs Recoveries Balance (in millions) Held-to-maturity debt securities Tax-exempt $ 5.2 $ (2.0) $ — $ — $ 3.2 No allowance has been recognized on the Company's HTM private label residential MBS as losses are not expected due to the Company holding a senior position in these securities. Accrued interest receivable on HTM securities totaled $4 million at March 31, 2023 and December 31, 2022, and is excluded from the estimate of expected credit losses. The following tables summarize the carrying amount of the Company’s investment ratings position as of March 31, 2023 and December 31, 2022, which are updated quarterly and used to monitor the credit quality of the Company's securities: March 31, 2023 AAA Split-rated AAA/AA+ AA+ to AA- A+ to A- BBB+ to BBB- BB+ and below Unrated Totals (in millions) Held-to-maturity Private label residential MBS $ — $ — $ — $ — $ — $ — $ 195 $ 195 Tax-exempt — — — — — — 1,130 1,130 Total HTM securities (1) $ — $ — $ — $ — $ — $ — $ 1,325 $ 1,325 Available-for-sale debt securities CLO $ 205 $ — $ 2,138 $ 93 $ — $ — $ — $ 2,436 Commercial MBS issued by GSEs — 62 — — — — — 62 Corporate debt securities — — — 72 227 59 — 358 Private label residential MBS 1,133 — 42 — — — — 1,175 Residential MBS issued by GSEs — 1,788 — — — — — 1,788 Tax-exempt 11 16 380 392 — — 61 860 U.S. Treasury securities — 900 — — — — — 900 Other — — 9 9 29 3 16 66 Total AFS securities (1) $ 1,349 $ 2,766 $ 2,569 $ 566 $ 256 $ 62 $ 77 $ 7,645 Equity securities Common stock $ — $ — $ — $ — $ — $ — $ 3 $ 3 CRA investments — 25 — — — — 14 39 Preferred stock — — — — 71 18 10 99 Total equity securities (1) $ — $ 25 $ — $ — $ 71 $ 18 $ 27 $ 141 (1) For rated securities, if ratings differ, the Company uses an average of the available ratings by major credit agencies. December 31, 2022 AAA Split-rated AAA/AA+ AA+ to AA- A+ to A- BBB+ to BBB- BB+ and below Unrated Totals (in millions) Held-to-maturity Private label residential MBS $ — $ — $ — $ — $ — $ — $ 198 $ 198 Tax-exempt — — — — — — 1,091 1,091 Total HTM securities (1) $ — $ — $ — $ — $ — $ — $ 1,289 $ 1,289 Available-for-sale debt securities CLO $ 310 $ — $ 2,121 $ 275 $ — $ — $ — $ 2,706 Commercial MBS issued by GSEs — 97 — — — — — 97 Corporate debt securities — — — 74 316 — — 390 Private label residential MBS 1,158 — 41 — — — — 1,199 Residential MBS issued by GSEs — 1,740 — — — — — 1,740 Tax-exempt 11 15 392 425 — — 48 891 Other — — 9 9 27 6 18 69 Total AFS securities (1) $ 1,479 $ 1,852 $ 2,563 $ 783 $ 343 $ 6 $ 66 $ 7,092 Equity securities Common stock $ — $ — $ — $ — $ — $ — $ 3 $ 3 CRA investments — 24 — — — — 25 49 Preferred stock — — — — 82 17 9 108 Total equity securities (1) $ — $ 24 $ — $ — $ 82 $ 17 $ 37 $ 160 (1) For rated securities, if ratings differ, the Company uses an average of the available ratings by major credit agencies. A security is considered to be past due once it is 30 days contractually past due under the terms of the agreement. As of March 31, 2023, the Company did not have a significant amount of investment securities that were past due or on nonaccrual status. The amortized cost and fair value of the Company's debt securities as of March 31, 2023, by contractual maturities, are shown below. MBS are shown separately as individual MBS are comprised of pools of loans with varying maturities. Therefore, these securities are listed separately in the maturity summary. March 31, 2023 Amortized Cost Estimated Fair Value (in millions) Held-to-maturity Due in one year or less $ 9 $ 8 After one year through five years 18 18 After five years through ten years 33 32 After ten years 1,070 969 Mortgage-backed securities 195 158 Total HTM securities $ 1,325 $ 1,185 Available-for-sale Due in one year or less $ 910 $ 910 After one year through five years 166 151 After five years through ten years 879 828 After ten years 2,874 2,731 Mortgage-backed securities 3,605 3,025 Total AFS securities $ 8,434 $ 7,645 The following table presents gross gains and losses on sales of investment securities: Three Months Ended March 31, 2023 2022 (in millions) Available-for-sale securities Gross gains $ 3.4 $ 6.9 Gross losses (15.9) — Net (losses) gains on AFS securities $ (12.5) $ 6.9

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	3 Months Ended
	Mar. 31, 2023
Equity [Abstract]
Accumulated Other Comprehensive Income	The following table summarizes the changes in accumulated other comprehensive income (loss) by component, net of tax, for the periods indicated: Three Months Ended March 31, Unrealized holding gains (losses) on AFS securities Unrealized holding losses on SERP Unrealized holding gains (losses) on junior subordinated debt Impairment loss on securities Total (in millions) Balance, December 31, 2022 $ (663.7) $ (0.3) $ 3.0 $ — $ (661.0) Other comprehensive income (loss) before reclassifications 60.1 — (1.1) — 59.0 Amounts reclassified from AOCI 9.3 — — 1.2 10.5 Net current-period other comprehensive income (loss) 69.4 — (1.1) 1.2 69.5 Balance, March 31, 2023 $ (594.3) $ (0.3) $ 1.9 $ 1.2 $ (591.5) Balance, December 31, 2021 $ 16.7 $ (0.3) $ (0.7) $ — $ 15.7 Other comprehensive (loss) income before reclassifications (247.9) — 2.2 — (245.7) Amounts reclassified from AOCI (5.1) — — — (5.1) Net current-period other comprehensive (loss) income (253.0) — 2.2 — (250.8) Balance, March 31, 2022 $ (236.3) $ (0.3) $ 1.5 $ — $ (235.1)

Derivatives and Hedging

Derivatives and Hedging	3 Months Ended
	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	11. DERIVATIVES AND HEDGING ACTIVITIES The Company is a party to various derivative instruments. The primary types of derivatives that the Company uses are interest rate contracts, forward purchase and sale commitments, and interest rate futures. Generally, these instruments are used to help manage the Company's exposure to interest rate risk related to IRLCs and its inventory of loans HFS and MSRs and also to meet client financing and hedging needs. Derivatives are recorded at fair value on the Consolidated Balance Sheets, after taking into account the effects of bilateral collateral and master netting agreements. These agreements allow the Company to settle all derivative contracts held with the same counterparty on a net basis, and to offset net derivative positions with related cash collateral, where applicable. Derivatives Designated in Hedge Relationships The Company utilizes derivatives that have been designated as part of a hedge relationship in accordance with the applicable accounting guidance to minimize the exposure to changes in benchmark interest rates and volatility of net interest income and EVE to interest rate fluctuations. The primary derivative instruments used to manage interest rate risk are interest rate swaps, which convert the contractual interest rate index of agreed-upon amounts of assets and liabilities (i.e., notional amounts) from either a fixed rate to a variable rate, or from a variable rate to a fixed rate. The Company has pay fixed/receive variable interest rate swaps designated as fair value hedges of certain fixed rate loans. As a result, the Company receives variable-rate interest payments in exchange for making fixed-rate payments over the lives of the contracts without exchanging the notional amounts. The variable-rate interest payments are based on LIBOR and will convert to SOFR plus a spread adjustment upon the discontinuation of LIBOR in June 2023. The Company also had pay fixed/receive variable interest rate swaps, designated as fair value hedges using the last-of-layer method to manage the exposure to changes in fair value associated with fixed rate loans, resulting from changes in the designated benchmark interest rate (federal funds rate). These last-of-layer hedges provided the Company the ability to execute a fair value hedge of the interest rate risk associated with a portfolio of similar prepayable assets whereby the last dollar amount estimated to remain in the portfolio of assets was identified as the hedged item. Under these interest rate swap contracts, the Company received a variable rate and paid a fixed rate on the outstanding notional amount. During the year ended December 31, 2021, the Company completed a partial discontinuation of one of its last-of-layer hedges, which reduced the total hedged amount on these hedges from $1.0 billion to $880 million. During the three months ended March 31, 2022, the Company discontinued the remaining portion of these last-of-layer hedges. The cumulative basis adjustment on the discontinued last-of-layer hedges totaled $31 million, which was allocated across the remaining loan pool upon termination of the hedges and is being amortized over the remaining term. At March 31, 2023, the remaining cumulative basis adjustment on the discontinued last-of-layer hedges totaled $18 million. Derivatives Not Designated in Hedge Relationships Management enters into certain foreign exchange derivative contracts, back-to-back interest rate contracts, and risk participation agreements which are not designated as accounting hedges. Foreign exchange derivative contracts include spot, forward, forward window, and swap contracts. The purpose of these derivative contracts is to mitigate foreign currency risk on transactions entered into, or on behalf of customers. Contracts with customers, along with the related derivative trades that the Company places, are both remeasured at fair value, and are referred to as economic hedges since they economically offset the Company's exposure. The Company's back-to-back interest rate contracts are used to allow customers to manage long-term interest rate risk. Risk participation agreements are entered into with lead banks in certain loan syndications to share in the risk of default on interest rate swaps on the participated loan. The Company also uses derivative financial instruments to manage exposure to interest rate risk within its mortgage banking business related to IRLCs and its inventory of loans HFS and MSRs. The Company economically hedges the changes in fair value associated with changes in interest rates generally by utilizing forward sale commitments and interest rate futures. Fair Value Hedges As of March 31, 2023 and December 31, 2022, the following amounts are reflected on the Consolidated Balance Sheets related to cumulative basis adjustments for outstanding fair value hedges: March 31, 2023 December 31, 2022 Carrying Value of Hedged Assets/(Liabilities) Cumulative Fair Value Hedging Adjustment (1) Carrying Value of Hedged Assets/(Liabilities) Cumulative Fair Value Hedging Adjustment (1) (in millions) Loans HFI, net of deferred loan fees and costs $ 447 $ 13 $ 447 $ 17 (1) Included in the carrying value of the hedged assets/(liabilities). For the Company's derivative instruments that are designated and qualify as a fair value hedge, the gain or loss on the derivative instrument as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in current earnings in the same line item as the offsetting loss or gain on the related interest rate swaps. For loans, the gain or loss on the hedged item is included in interest income, as shown in the table below. Three Months Ended March 31, 2023 2022 Income Statement Classification Gain/(Loss) on Swaps Gain/(Loss) on Hedged Item Gain/(Loss) on Swaps Gain/(Loss) on Hedged Item (in millions) Interest income $ (4.3) $ 4.3 $ 33.5 $ (33.4) In addition to the gains and losses on the Company's outstanding fair value hedges presented in the above table, the Company recognized $3.0 million in interest income related to the amortization of the cumulative basis adjustment on its discontinued last-of-layer hedges during the three months ended March 31, 2023. Fair Values, Volume of Activity, and Gain/Loss Information Related to Derivative Instruments The following table summarizes the fair value of the Company's derivative instruments on a gross basis as of March 31, 2023, December 31, 2022, and March 31, 2022. The change in the notional amounts of these derivatives from March 31, 2022 to March 31, 2023 indicates the volume of the Company's derivative transaction activity during these periods. The derivative asset and liability balances are presented on a gross basis, prior to the application of bilateral collateral and master netting agreements. Total derivative assets and liabilities are adjusted to take into account the impact of legally enforceable master netting agreements that allow the Company to settle all derivative contracts with the same counterparty on a net basis and to offset the net derivative position with the related cash collateral. Where master netting agreements are not in effect or are not enforceable under bankruptcy laws, the Company does not adjust those derivative amounts with counterparties. March 31, 2023 December 31, 2022 March 31, 2022 Fair Value Fair Value Fair Value Notional Derivative Assets Derivative Liabilities Notional Derivative Assets Derivative Liabilities Notional Derivative Assets Derivative Liabilities (in millions) Derivatives designated as hedging instruments: Fair value hedges Interest rate swaps $ 470 $ 14 $ 1 $ 476 $ 18 $ — $ 499 $ 2 $ 23 Total 470 14 1 476 18 — 499 2 23 Derivatives not designated as hedging instruments (1): Foreign currency contracts $ 189 $ 2 $ 1 $ 250 $ 1 $ 9 $ 151 $ 1 $ 2 Forward purchase contracts 7,814 34 5 2,709 1 13 5,019 4 65 Forward sales contracts 9,702 3 64 4,985 16 8 9,557 149 6 Futures purchase contracts (2) 138,422 — — 150,943 — — 202,818 — — Futures sales contracts (2) 148,132 — — 159,649 — — 219,617 — — Interest rate lock commitments 1,557 14 1 1,459 5 3 2,420 6 17 Interest rate contracts 1,983 5 6 1,538 6 6 64 — — Risk participation agreements 51 — — 48 — — — — — Total $ 307,850 $ 58 $ 77 $ 321,581 $ 29 $ 39 $ 439,646 $ 160 $ 90 Margin 5 (14) 4 1 — 65 Total, including margin $ 307,850 $ 63 $ 63 $ 321,581 $ 33 $ 40 $ 439,646 $ 160 $ 155 (1) Relate to economic hedging arrangements. (2) The Company enters into forward purchase and sales contracts that are subject to daily remargining and almost all of which are based on three-month LIBOR to hedge against its MSR valuation exposure. The notional amount on these contracts is substantial as these contracts have a duration of only 0.25 years and are intended to cover the longer duration of MSR hedges. The fair value of derivative contracts, after taking into account the effects of master netting agreements, is included in other assets or other liabilities on the Consolidated Balance Sheets, as summarized in the table below: March 31, 2023 December 31, 2022 March 31, 2022 Gross amount of recognized assets (liabilities) Gross offset Net assets (liabilities) Gross amount of recognized assets (liabilities) Gross offset Net assets (liabilities) Gross amount of recognized assets (liabilities) Gross offset Net assets (liabilities) (in millions) Derivatives subject to master netting arrangements: Assets Forward purchase contracts $ 30 $ — $ 30 $ 1 $ — $ 1 $ 3 $ — $ 3 Forward sales contracts 3 — 3 13 — 13 149 — 149 Interest rate contracts 14 — 14 18 — 18 2 — 2 Margin 5 — 5 4 — 4 — — — Netting — (38) (38) — (17) (17) — (130) (130) $ 52 $ (38) $ 14 $ 36 $ (17) $ 19 $ 154 $ (130) $ 24 Liabilities Forward purchase contracts $ (4) $ — $ (4) $ (12) $ — $ (12) $ (64) $ — $ (64) Forward sales contracts (52) — (52) (8) — (8) (6) — (6) Interest rate contracts (1) — (1) — — — (23) — (23) Margin 14 — 14 (1) — (1) (65) — (65) Netting — 38 38 — 17 17 — 130 130 $ (43) $ 38 $ (5) $ (21) $ 17 $ (4) $ (158) $ 130 $ (28) Derivatives not subject to master netting arrangements: Assets Foreign currency contracts $ 2 $ — $ 2 $ 1 $ — $ 1 $ — $ — $ — Forward purchase contracts 4 — 4 — — — 1 — 1 Forward sales contracts — — — 3 — 3 1 — 1 Interest rate lock commitments 14 — 14 5 — 5 6 — 6 Interest rate contracts 5 — 5 6 — 6 — — — $ 25 $ — $ 25 $ 15 $ — $ 15 $ 8 $ — $ 8 Liabilities Foreign currency contracts $ (1) $ — $ (1) $ (9) $ — $ (9) $ (2) $ — $ (2) Forward purchase contracts (1) — (1) (1) — (1) — — — Forward sales contracts (12) — (12) — — — — — — Interest rate lock commitments (1) — (1) (3) — (3) (18) — (18) Interest rate contracts (6) — (6) (6) — (6) — — — $ (21) $ — $ (21) $ (19) $ — $ (19) $ (20) $ — $ (20) Total derivatives and margin Assets $ 77 $ (38) $ 39 $ 51 $ (17) $ 34 $ 162 $ (130) $ 32 Liabilities $ (64) $ 38 $ (26) $ (40) $ 17 $ (23) $ (178) $ 130 $ (48) The following table summarizes the net gain (loss) on derivatives included in income: Three Months Ended March 31, 2023 2022 ($ in millions) Net gain (loss) on loan origination and sale activities: Interest rate lock commitments $ 11.5 $ (20.8) Forward contracts (36.8) 241.3 Interest rate swaps 1.2 — Other contracts (0.5) (3.7) Total loss $ (24.6) $ 216.8 Net loan servicing revenue: Forward contracts $ (1.6) $ (34.9) Futures contracts (4.0) (22.0) Interest rate swaps 19.0 — Total gain $ 13.4 $ (56.9) Counterparty Credit Risk

Earnings per Share

Earnings per Share	3 Months Ended
	Mar. 31, 2023
Earnings Per Share [Abstract]
Earnings Per Share	Diluted EPS is calculated using the weighted average outstanding common shares during the period, including common stock equivalents. Basic EPS is calculated using the weighted average outstanding common shares during the period. The following table presents the calculation of basic and diluted EPS: Three Months Ended March 31, 2023 2022 (in millions, except per share amounts) Weighted average shares - basic 108.1 106.0 Dilutive effect of stock awards 0.2 0.6 Weighted average shares - diluted 108.3 106.6 Net income available to common stockholders $ 139.0 $ 236.9 Earnings per share - basic 1.29 2.23 Earnings per share - diluted 1.28 2.22

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Income Taxes	The Company's effective tax rate was 23.0% and 19.5% for the three months ended March 31, 2023 and 2022, respectively. The increase in the effective tax rate was primarily due to a decrease in LIHTC and solar credit benefits and a decrease in excess stock compensation benefit. As of March 31, 2023, the net DTA balance totaled $289 million, a decrease of $22 million from $311 million at December 31, 2022. This overall decrease in the net deferred tax asset was primarily the result of increases in the fair market value of AFS securities and a decrease to tax credit carryovers. These items were not fully offset by decreases to DTLs related to MSRs. Although realization is not assured, the Company believes that the realization of the recognized deferred tax asset of $289 million at March 31, 2023 is more-likely-than-not based on expectations as to future taxable income and based on available tax planning strategies that could be implemented if necessary to prevent a carryover from expiring. At March 31, 2023 and December 31, 2022, the Company had no deferred tax valuation allowance. LIHTC and renewable energy projects The Company holds ownership interests in limited partnerships and limited liability companies that invest in affordable housing and renewable energy projects. These investments are designed to generate a return primarily through the realization of federal tax credits and deductions. The limited liability entities are considered to be VIEs; however, as a limited partner, the Company is not the primary beneficiary and is not required to consolidate these entities.

Segments

Segments	3 Months Ended
	Mar. 31, 2023
Segment Reporting [Abstract]
Segments	The Company's reportable segments are aggregated with a focus on products and services offered and consist of three reportable segments: • Commercial: provides commercial banking and treasury management products and services to small and middle-market businesses, specialized banking services to sophisticated commercial institutions and investors within niche industries, as well as financial services to the real estate industry. • Consumer Related: offers both commercial banking services to enterprises in consumer-related sectors and consumer banking services, such as residential mortgage banking. • Corporate & Other: consists of the Company's investment portfolio, Corporate borrowings and other related items, income and expense items not allocated to other reportable segments, and inter-segment eliminations. The Company's segment reporting process begins with the assignment of all loan and deposit accounts directly to the segments where these products are originated and/or serviced. Equity capital is assigned to each segment based on the risk profile of their assets and liabilities. With the exception of goodwill, which is assigned a 100% weighting, equity capital allocations ranged from 0% to 20% during the year. Any excess or deficient equity not allocated to segments based on risk is assigned to the Corporate & Other segment. Net interest income, provision for credit losses, and non-interest expense amounts are recorded in their respective segments to the extent that the amounts are directly attributable to those segments. Net interest income is recorded in each segment on a TEB with a corresponding increase in income tax expense, which is eliminated in the Corporate & Other segment. Further, net interest income of a reportable segment includes a funds transfer pricing process that matches assets and liabilities with similar interest rate sensitivity and maturity characteristics. Using this funds transfer pricing methodology, liquidity is transferred between users and providers. A net user of funds has lending/investing in excess of deposits/borrowings and a net provider of funds has deposits/borrowings in excess of lending/investing. A segment that is a user of funds is charged for the use of funds, while a provider of funds is credited through funds transfer pricing, which is determined based on the average estimated life of the assets or liabilities in the portfolio. Residual funds transfer pricing mismatches are allocable to the Corporate & Other segment and presented in net interest income. The net income amount for each reportable segment is further derived by the use of expense allocations. Certain expenses not directly attributable to a specific segment are allocated across all segments based on key metrics, such as number of employees, number of transactions processed for loans and deposits, and average loan and deposit balances. These types of expenses include information technology, operations, human resources, finance, risk management, credit administration, legal, and marketing. Income taxes are applied to each segment based on estimated effective tax rates. Any difference in the corporate tax rate and the aggregate effective tax rates in the segments are adjusted in the Corporate & Other segment.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Nature of Operation	Nature of operations WAL is a bank holding company headquartered in Phoenix, Arizona, incorporated under the laws of the state of Delaware. WAL provides a full spectrum of customized loan, deposit, and treasury management capabilities, including 24/7 funds transfer and other digital payment offerings through its wholly-owned banking subsidiary, WAB. WAB operates the following full-service banking divisions: ABA, BON, FIB, Bridge, and TPB. The Company also serves business customers through a national platform of specialized financial services, including mortgage banking services through AmeriHome, and digital payment services for the class action legal industry through DST. In addition, the Company has the following non-bank subsidiaries: CSI, a captive insurance company formed and licensed under the laws of the State of Arizona and established as part of the Company's overall enterprise risk management strategy, and WATC, which provides corporate trust services and levered loan administration solutions.
Basis of Presentation	Basis of presentation The accompanying Unaudited Consolidated Financial Statements as of March 31, 2023 and for the three months ended March 31, 2023 and 2022 have been prepared in accordance with GAAP for interim financial information and Article 10 of Regulation S-X and, therefore, do not include all of the information and footnotes required by GAAP for complete financial statements. Accordingly, these statements should be read in conjunction with the Company's audited Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2022. The accounts of the Company and its consolidated subsidiaries are included in the Consolidated Financial Statements.
Recent Accounting Pronouncements	Recent accounting pronouncements Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method In March 2023, the FASB issued guidance within ASU 2023-02, Investments — Equity Method and Joint Ventures (Topic 323). The amendments in this update permit entities to elect to account for tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. Previously this option was only permitted for LIHTC investments. Additionally, the amendments in this update require that all tax equity investments accounted for using the proportional amortization method apply the delayed equity contribution guidance in Subtopic 323-740 and disclosure of the nature of an entity's tax equity investments and their effect on an entity's financial position and results of operations. The amendments in this update are effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years and are applied on a modified retrospective or a retrospective basis. The adoption of this guidance is not expected to have a material impact on the Company's Consolidated Financial Statements. Recently adopted accounting guidance Troubled Debt Restructurings and Vintage Disclosures In March 2022, the FASB issued guidance within ASU 2022-02, Financial Instruments—Credit Losses (Topic 326). The amendments in this update eliminate the accounting guidance and related disclosures for TDRs by creditors in Subtopic 310-40, Receivables—Troubled Debt Restructurings by Creditors , while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty and requiring an entity to disclose current-period gross writeoffs by year of origination for financing receivables and net investments in leases within the scope of Subtopic 326-20, Financial Instruments—Credit Losses—Measured at Amortized Cost . The Company adopted this accounting guidance prospectively on January 1, 2023. The adoption of this guidance did not have a material impact on the Company's Consolidated Financial Statements.
Use of Estimates	Use of estimatesThe preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Management's estimates and judgments are ongoing and are based on experience, current and expected future conditions, third-party evaluations and various other assumptions that management believes are reasonable under the circumstances. The results of these estimates form the basis for making judgments about the carrying values of assets and liabilities, as well as identifying and assessing the accounting treatment with respect to commitments and contingencies. Actual results may differ from those estimates and assumptions used in the Consolidated Financial Statements and related notes. Material estimates that are susceptible to significant changes in the near term relate to: 1) the determination of the ACL; 2) certain assets and liabilities carried at fair value; and 3) accounting for income taxes.
Principles of Consolidation	Principles of consolidation As of March 31, 2023, WAL has the following significant wholly-owned subsidiaries: WAB and eight unconsolidated subsidiaries used as business trusts in connection with the issuance of trust-preferred securities. WAB has the following significant wholly-owned subsidiaries: 1) WABT, which holds certain investment securities, municipal and nonprofit loans, and leases; 2) WA PWI, which holds interests in certain limited partnerships invested primarily in low income housing tax credits and small business investment corporations; 3) Helios Prime, which holds interests in certain limited partnerships invested in renewable energy projects; 4) BW Real Estate, Inc., which operates as a real estate investment trust and holds certain of WAB's real estate loans and related securities; and 5) Western Finance Company, which purchases and originates equipment finance leases and provides mortgage banking services through its wholly-owned subsidiary, AmeriHome. The Company does not have any other significant entities that should be consolidated. All significant intercompany balances and transactions have been eliminated in consolidation.
Reclassifications	ReclassificationsCertain amounts in the Consolidated Income Statements for the prior periods have been reclassified to conform to the current presentation. The reclassifications had no effect on net income or stockholders’ equity as previously reported.

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Table Text Block]	Three Months Ended March 31, 2023 Balance, Provision for Credit Losses Charge-offs Recoveries Balance, (in millions) Held-to-maturity debt securities Tax-exempt $ 5.2 $ 1.3 $ — $ — $ 6.5 Three Months Ended March 31, 2022: Balance, Provision for Credit Losses Charge-offs Recoveries Balance (in millions) Held-to-maturity debt securities Tax-exempt $ 5.2 $ (2.0) $ — $ — $ 3.2
Carrying Amounts and Fair Values of Investment Securities	The carrying amounts and fair values of investment securities at March 31, 2023 and December 31, 2022 are summarized as follows: March 31, 2023 Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value (in millions) Held-to-maturity Private label residential MBS $ 195 $ — $ (38) $ 157 Tax-exempt 1,130 2 (104) 1,028 Total HTM securities $ 1,325 $ 2 $ (142) $ 1,185 Available-for-sale debt securities CLO $ 2,499 $ — $ (63) $ 2,436 Commercial MBS issued by GSEs 70 — (8) 62 Corporate debt securities 411 — (53) 358 Private label residential MBS 1,399 — (224) 1,175 Residential MBS issued by GSEs 2,136 1 (349) 1,788 Tax-exempt 945 1 (86) 860 U.S. Treasury securities 900 — — 900 Other 74 3 (11) 66 Total AFS debt securities $ 8,434 $ 5 $ (794) $ 7,645 December 31, 2022 Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value (in millions) Held-to-maturity Private label residential MBS $ 198 $ — $ (39) $ 159 Tax-exempt 1,091 — (138) 953 Total HTM securities $ 1,289 $ — $ (177) $ 1,112 Available-for-sale debt securities CLO $ 2,796 $ — $ (90) $ 2,706 Commercial MBS issued by GSEs 104 1 (8) 97 Corporate debt securities 429 — (39) 390 Private label residential MBS 1,442 — (243) 1,199 Residential MBS issued by GSEs 2,123 — (383) 1,740 Tax-exempt 1,004 2 (115) 891 Other 75 6 (12) 69 Total AFS debt securities $ 7,973 $ 9 $ (890) $ 7,092 In addition, the Company held equity securities, which primarily consisted of preferred stock and CRA investments, with a fair value of $141 million and $160 million at March 31, 2023 and December 31, 2022, respectively. Unrealized losses on equity securities of $8.5 million and $6.7 million for the three months ended March 31, 2023 and 2022, respectively, were recognized in earnings as a component of fair value loss adjustments. Securities with carrying amounts of approximately $ 6.5 billion 1.7 billion
Unrealized Losses and Fair Value of Investment Securities in Continuous Unrealized Loss Position	unrealized loss position at March 31, 2023 and December 31, 2022, aggregated by major security type and length of time in a continuous unrealized loss position: March 31, 2023 Less Than Twelve Months More Than Twelve Months Total Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (in millions) Available-for-sale debt securities CLO $ 39 $ 1,613 $ 24 $ 813 $ 63 $ 2,426 Commercial MBS issued by GSEs 1 23 8 37 9 60 Corporate debt securities (1) 6 61 47 290 53 351 Private label residential MBS 8 97 216 1,064 224 1,161 Residential MBS issued by GSEs 7 222 342 1,525 349 1,747 Tax-exempt 8 249 78 588 86 837 U.S. Treasury securities — 892 — — — 892 Other 2 18 8 36 10 54 Total AFS securities $ 71 $ 3,175 $ 723 $ 4,353 $ 794 $ 7,528 (1) Includes securities with an ACL that have a fair value of $87 million and unrealized losses of $20 million. December 31, 2022 Less Than Twelve Months More Than Twelve Months Total Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (in millions) Available-for-sale debt securities CLO $ 81 $ 2,467 $ 9 $ 216 $ 90 $ 2,683 Commercial MBS issued by GSEs 4 46 4 14 8 60 Corporate debt securities 28 263 11 120 39 383 Private label residential MBS 27 279 216 912 243 1,191 Residential MBS issued by GSEs 82 600 301 1,101 383 1,701 Tax-exempt 93 752 22 78 115 830 Other 4 26 8 26 12 52 Total AFS securities $ 319 $ 4,433 $ 571 $ 2,467 $ 890 $ 6,900
Amortized Cost and Fair Value of Investment Securities by Contractual Maturities	A security is considered to be past due once it is 30 days contractually past due under the terms of the agreement. As of March 31, 2023, the Company did not have a significant amount of investment securities that were past due or on nonaccrual status. The amortized cost and fair value of the Company's debt securities as of March 31, 2023, by contractual maturities, are shown below. MBS are shown separately as individual MBS are comprised of pools of loans with varying maturities. Therefore, these securities are listed separately in the maturity summary. March 31, 2023 Amortized Cost Estimated Fair Value (in millions) Held-to-maturity Due in one year or less $ 9 $ 8 After one year through five years 18 18 After five years through ten years 33 32 After ten years 1,070 969 Mortgage-backed securities 195 158 Total HTM securities $ 1,325 $ 1,185 Available-for-sale Due in one year or less $ 910 $ 910 After one year through five years 166 151 After five years through ten years 879 828 After ten years 2,874 2,731 Mortgage-backed securities 3,605 3,025 Total AFS securities $ 8,434 $ 7,645
Investment Securities by Credit Rating Type	The following tables summarize the carrying amount of the Company’s investment ratings position as of March 31, 2023 and December 31, 2022, which are updated quarterly and used to monitor the credit quality of the Company's securities: March 31, 2023 AAA Split-rated AAA/AA+ AA+ to AA- A+ to A- BBB+ to BBB- BB+ and below Unrated Totals (in millions) Held-to-maturity Private label residential MBS $ — $ — $ — $ — $ — $ — $ 195 $ 195 Tax-exempt — — — — — — 1,130 1,130 Total HTM securities (1) $ — $ — $ — $ — $ — $ — $ 1,325 $ 1,325 Available-for-sale debt securities CLO $ 205 $ — $ 2,138 $ 93 $ — $ — $ — $ 2,436 Commercial MBS issued by GSEs — 62 — — — — — 62 Corporate debt securities — — — 72 227 59 — 358 Private label residential MBS 1,133 — 42 — — — — 1,175 Residential MBS issued by GSEs — 1,788 — — — — — 1,788 Tax-exempt 11 16 380 392 — — 61 860 U.S. Treasury securities — 900 — — — — — 900 Other — — 9 9 29 3 16 66 Total AFS securities (1) $ 1,349 $ 2,766 $ 2,569 $ 566 $ 256 $ 62 $ 77 $ 7,645 Equity securities Common stock $ — $ — $ — $ — $ — $ — $ 3 $ 3 CRA investments — 25 — — — — 14 39 Preferred stock — — — — 71 18 10 99 Total equity securities (1) $ — $ 25 $ — $ — $ 71 $ 18 $ 27 $ 141 (1) For rated securities, if ratings differ, the Company uses an average of the available ratings by major credit agencies. December 31, 2022 AAA Split-rated AAA/AA+ AA+ to AA- A+ to A- BBB+ to BBB- BB+ and below Unrated Totals (in millions) Held-to-maturity Private label residential MBS $ — $ — $ — $ — $ — $ — $ 198 $ 198 Tax-exempt — — — — — — 1,091 1,091 Total HTM securities (1) $ — $ — $ — $ — $ — $ — $ 1,289 $ 1,289 Available-for-sale debt securities CLO $ 310 $ — $ 2,121 $ 275 $ — $ — $ — $ 2,706 Commercial MBS issued by GSEs — 97 — — — — — 97 Corporate debt securities — — — 74 316 — — 390 Private label residential MBS 1,158 — 41 — — — — 1,199 Residential MBS issued by GSEs — 1,740 — — — — — 1,740 Tax-exempt 11 15 392 425 — — 48 891 Other — — 9 9 27 6 18 69 Total AFS securities (1) $ 1,479 $ 1,852 $ 2,563 $ 783 $ 343 $ 6 $ 66 $ 7,092 Equity securities Common stock $ — $ — $ — $ — $ — $ — $ 3 $ 3 CRA investments — 24 — — — — 25 49 Preferred stock — — — — 82 17 9 108 Total equity securities (1) $ — $ 24 $ — $ — $ 82 $ 17 $ 37 $ 160 (1) For rated securities, if ratings differ, the Company uses an average of the available ratings by major credit agencies.

Loans, Leases and Allowance for

Loans, Leases and Allowance for Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2023
Receivables [Abstract]
Financing Receivable, Troubled Debt Restructuring [Table Text Block]	The following table presents TDR loans by loan portfolio segment: December 31, 2022 Number of Loans Recorded Investment Other commercial and industrial 4 $ 2 CRE - owner occupied 1 1 Hotel franchise finance 1 10 Other CRE - non-owner occupied 1 1 Total 7 $ 14
Schedule of Held for Investment Loan Portfolio Composition of Loans, Leases and Allowance for Credit Losses	The composition of the Company's HFI loan portfolio is as follows: March 31, 2023 December 31, 2022 (in millions) Warehouse lending $ 4,788 $ 5,561 Municipal & nonprofit 1,543 1,524 Tech & innovation 2,471 2,293 Equity fund resources 971 3,717 Other commercial and industrial 5,912 7,793 CRE - owner occupied 1,645 1,656 Hotel franchise finance 3,900 3,807 Other CRE - non-owner occupied 5,650 5,457 Residential 13,435 13,996 Residential - EBO 1,538 1,884 Construction and land development 4,388 3,995 Other 194 179 Total loans HFI 46,435 51,862 Allowance for credit losses (305) (310) Total loans HFI, net of allowance $ 46,130 $ 51,552
Contractual Aging of Loan Portfolio by Class of Loans Including Loans Held for Sale and Excluding Deferred Fees/Costs	The following table presents an aging analysis of past due loans by loan portfolio segment: March 31, 2023 Current 30-59 Days 60-89 Days Over 90 days Total Total (in millions) Warehouse lending $ 4,788 $ — $ — $ — $ — $ 4,788 Municipal & nonprofit 1,523 20 — — 20 1,543 Tech & innovation 2,471 — — — — 2,471 Equity fund resources 971 — — — — 971 Other commercial and industrial 5,912 — — — — 5,912 CRE - owner occupied 1,645 — — — — 1,645 Hotel franchise finance 3,900 — — — — 3,900 Other CRE - non-owner occupied 5,650 — — — — 5,650 Residential 13,394 32 5 4 41 13,435 Residential - EBO 720 178 108 532 818 1,538 Construction and land development 4,388 — — — — 4,388 Other 194 — — — — 194 Total loans $ 45,556 $ 230 $ 113 $ 536 $ 879 $ 46,435 December 31, 2022 Current 30-59 Days 60-89 Days Over 90 days Total Total (in millions) Warehouse lending $ 5,561 $ — $ — $ — $ — $ 5,561 Municipal & nonprofit 1,524 — — — — 1,524 Tech & innovation 2,270 23 — — 23 2,293 Equity fund resources 3,717 — — — — 3,717 Other commercial and industrial 7,791 2 — — 2 7,793 CRE - owner occupied 1,656 — — — — 1,656 Hotel franchise finance 3,807 — — — — 3,807 Other CRE - non-owner occupied 5,454 3 — — 3 5,457 Residential 13,955 37 4 — 41 13,996 Residential - EBO 969 217 116 582 915 1,884 Construction and land development 3,995 — — — — 3,995 Other 178 1 — — 1 179 Total loans $ 50,877 $ 283 $ 120 $ 582 $ 985 $ 51,862
Summary of Recorded Investment in Nonaccrual Loans and Loans Past Due 90 Days Still Accruing Interest by Loan Class	Loans are placed on nonaccrual status when management determines that the full repayment of principal and collection of interest according to contractual terms is no longer likely, generally when the loan becomes 90 days or more past due. The following tables present nonperforming loan balances by loan portfolio segment: March 31, 2023 Nonaccrual with No Allowance for Credit Loss Nonaccrual with an Allowance for Credit Loss Total Nonaccrual Loans Past Due 90 Days or More and Still Accruing (in millions) Municipal & nonprofit $ — $ 13 $ 13 $ — Tech & innovation — 9 9 — Other commercial and industrial 20 9 29 — CRE - owner occupied 19 2 21 — Other CRE - non-owner occupied 3 2 5 — Residential — 28 28 1 Residential - EBO — — — 495 Construction and land development 2 — 2 — Total $ 44 $ 63 $ 107 $ 496 Loans contractually delinquent by 90 days or more and still accruing totaled $496 million at March 31, 2023 and consisted of primarily government guaranteed EBO residential loans.
Loans by Risk Rating	Credit Quality Indicators The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. The Company analyzes loans individually to classify the loans as to credit risk. This analysis is performed on a quarterly basis. The following tables present risk ratings by loan portfolio segment and origination year. The origination year is the year of origination or renewal. Term Loan Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Total March 31, 2023 2023 2022 2021 2020 2019 Prior (in millions) Warehouse lending Pass $ 555 $ 566 $ 53 $ 156 $ — $ — $ 3,458 $ 4,788 Special mention — — — — — — — — Classified — — — — — — — — Total $ 555 $ 566 $ 53 $ 156 $ — $ — $ 3,458 $ 4,788 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Municipal & nonprofit Pass $ 2 $ 114 $ 196 $ 187 $ 71 $ 953 $ — $ 1,523 Special mention — 7 — — — — — 7 Classified — — — — 6 7 — 13 Total $ 2 $ 121 $ 196 $ 187 $ 77 $ 960 $ — $ 1,543 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Tech & innovation Pass $ 127 $ 812 $ 324 $ 85 $ 56 $ 5 $ 978 $ 2,387 Special mention 3 27 8 6 — — 10 54 Classified 4 5 16 3 — — 2 30 Total $ 134 $ 844 $ 348 $ 94 $ 56 $ 5 $ 990 $ 2,471 Current period gross charge-offs $ 2 $ — $ — $ — $ — $ — $ — $ 2 Equity fund resources Pass $ 93 $ 105 $ 133 $ 11 $ 12 $ 3 $ 614 $ 971 Special mention — — — — — — — — Classified — — — — — — — — Total $ 93 $ 105 $ 133 $ 11 $ 12 $ 3 $ 614 $ 971 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Other commercial and industrial Pass $ 520 $ 1,773 $ 579 $ 237 $ 158 $ 281 $ 2,300 $ 5,848 Special mention 14 1 — — — — — 15 Classified — 2 35 7 2 3 — 49 Total $ 534 $ 1,776 $ 614 $ 244 $ 160 $ 284 $ 2,300 $ 5,912 Current period gross charge-offs $ — $ — $ 6 $ 1 $ — $ — $ — $ 7 CRE - owner occupied Pass $ 30 $ 357 $ 350 $ 169 $ 146 $ 527 $ 25 $ 1,604 Special mention — — — — — 1 — 1 Classified — — 14 7 5 8 6 40 Total $ 30 $ 357 $ 364 $ 176 $ 151 $ 536 $ 31 $ 1,645 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Hotel franchise finance Pass $ 345 $ 1,696 $ 660 $ 53 $ 527 $ 281 $ 118 $ 3,680 Special mention — — — — — 8 — 8 Classified 19 9 20 26 114 24 — 212 Total $ 364 $ 1,705 $ 680 $ 79 $ 641 $ 313 $ 118 $ 3,900 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Term Loan Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Total March 31, 2023 2023 2022 2021 2020 2019 Prior (in millions) Other CRE - non-owner occupied Pass $ 429 $ 2,339 $ 1,093 $ 871 $ 260 $ 294 $ 199 $ 5,485 Special mention — 45 38 28 2 1 21 135 Classified — — 5 — 20 5 — 30 Total $ 429 $ 2,384 $ 1,136 $ 899 $ 282 $ 300 $ 220 $ 5,650 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Residential Pass $ 81 $ 3,645 $ 8,312 $ 837 $ 282 $ 221 $ 29 $ 13,407 Special mention — — — — — — — — Classified — 12 12 — 3 1 — 28 Total $ 81 $ 3,657 $ 8,324 $ 837 $ 285 $ 222 $ 29 $ 13,435 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Residential - EBO Pass $ — $ 3 $ 252 $ 618 $ 329 $ 336 $ — $ 1,538 Special mention — — — — — — — — Classified — — — — — — — — Total $ — $ 3 $ 252 $ 618 $ 329 $ 336 $ — $ 1,538 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Construction and land development Pass $ 339 $ 1,653 $ 755 $ 249 $ 6 $ 2 $ 1,255 $ 4,259 Special mention — — — 99 — — — 99 Classified — 2 28 — — — — 30 Total $ 339 $ 1,655 $ 783 $ 348 $ 6 $ 2 $ 1,255 $ 4,388 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Other Pass $ 10 $ 18 $ 9 $ 14 $ 5 $ 66 $ 71 $ 193 Special mention — — — — — 1 — 1 Classified — — — — — — — — Total $ 10 $ 18 $ 9 $ 14 $ 5 $ 67 $ 71 $ 194 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Total by Risk Category Pass $ 2,531 $ 13,081 $ 12,716 $ 3,487 $ 1,852 $ 2,969 $ 9,047 $ 45,683 Special mention 17 80 46 133 2 11 31 320 Classified 23 30 130 43 150 48 8 432 Total $ 2,571 $ 13,191 $ 12,892 $ 3,663 $ 2,004 $ 3,028 $ 9,086 $ 46,435 Term Loan Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Total December 31, 2022 2022 2021 2020 2019 2018 Prior (in millions) Warehouse lending Pass $ 397 $ 41 $ 152 $ — $ — $ — $ 4,928 $ 5,518 Special mention 43 — — — — — — 43 Classified — — — — — — — — Total $ 440 $ 41 $ 152 $ — $ — $ — $ 4,928 $ 5,561 Municipal & nonprofit Pass $ 107 $ 185 $ 187 $ 78 $ 43 $ 917 $ — $ 1,517 Special mention — — — — — — — — Classified — — — — — 7 — 7 Total $ 107 $ 185 $ 187 $ 78 $ 43 $ 924 $ — $ 1,524 Tech & innovation Pass $ 813 $ 374 $ 87 $ 66 $ 4 $ 1 $ 853 $ 2,198 Special mention 36 22 3 — — — 20 81 Classified 2 12 — — — — — 14 Total $ 851 $ 408 $ 90 $ 66 $ 4 $ 1 $ 873 $ 2,293 Equity fund resources Pass $ 1,020 $ 1,189 $ 191 $ 16 $ — $ — $ 1,301 $ 3,717 Special mention — — — — — — — — Classified — — — — — — — — Total $ 1,020 $ 1,189 $ 191 $ 16 $ — $ — $ 1,301 $ 3,717 Other commercial and industrial Pass $ 2,968 $ 1,272 $ 262 $ 277 $ 312 $ 206 $ 2,406 $ 7,703 Special mention — 44 — — — — 3 47 Classified 3 21 10 3 3 1 2 43 Total $ 2,971 $ 1,337 $ 272 $ 280 $ 315 $ 207 $ 2,411 $ 7,793 CRE - owner occupied Pass $ 338 $ 359 $ 174 $ 157 $ 211 $ 339 $ 29 $ 1,607 Special mention — — — — — 1 — 1 Classified — 14 7 1 5 10 11 48 Total $ 338 $ 373 $ 181 $ 158 $ 216 $ 350 $ 40 $ 1,656 Hotel franchise finance Pass $ 1,762 $ 726 $ 54 $ 528 $ 290 $ 103 $ 118 $ 3,581 Special mention — — 26 — — — — 26 Classified 18 20 — 117 45 — — 200 Total $ 1,780 $ 746 $ 80 $ 645 $ 335 $ 103 $ 118 $ 3,807 Other CRE - non-owner occupied Pass $ 2,344 $ 1,201 $ 870 $ 264 $ 160 $ 218 $ 315 $ 5,372 Special mention 3 38 — 12 — — 1 54 Classified — 4 — 12 10 5 — 31 Total $ 2,347 $ 1,243 $ 870 $ 288 $ 170 $ 223 $ 316 $ 5,457 Residential Pass $ 4,041 $ 8,474 $ 878 $ 308 $ 150 $ 90 $ 36 $ 13,977 Special mention — — — — — — — — Classified 6 9 — 3 1 — — 19 Total $ 4,047 $ 8,483 $ 878 $ 311 $ 151 $ 90 $ 36 $ 13,996 Residential - EBO Pass $ 3 $ 268 $ 712 $ 454 $ 191 $ 256 $ — $ 1,884 Special mention — — — — — — — — Classified — — — — — — — — Total $ 3 $ 268 $ 712 $ 454 $ 191 $ 256 $ — $ 1,884 Term Loan Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Total December 31, 2022 2022 2021 2020 2019 2018 Prior (in millions) Construction and land development Pass $ 1,533 $ 815 $ 273 $ 14 $ — $ — $ 1,258 $ 3,893 Special mention — — 98 — — — — 98 Classified — — — 4 — — — 4 Total $ 1,533 $ 815 $ 371 $ 18 $ — $ — $ 1,258 $ 3,995 Other Pass $ 23 $ 10 $ 13 $ 5 $ 2 $ 61 $ 64 $ 178 Special mention — — — — — 1 — 1 Classified — — — — — — — — Total $ 23 $ 10 $ 13 $ 5 $ 2 $ 62 $ 64 $ 179 Total by Risk Category Pass $ 15,349 $ 14,914 $ 3,853 $ 2,167 $ 1,363 $ 2,191 $ 11,308 $ 51,145 Special mention 82 104 127 12 — 2 24 351 Classified 29 80 17 140 64 23 13 366 Total $ 15,460 $ 15,098 $ 3,997 $ 2,319 $ 1,427 $ 2,216 $ 11,345 $ 51,862 Restructurings for Borrowers Experiencing Financial Difficulty The Company adopted the amendments in ASU 2022-02, which eliminated accounting guidance on TDR loans for creditors and requires enhanced disclosures for loan modifications to borrowers experiencing financial difficulty that were made on or after January 1, 2023. See “Note 1. Summary of Significant Accounting Policies” of these Notes to Unaudited Financial Statements for further discussion of the amendments in this update. The following table presents the amortized cost of loans HFI that were modified during the period by loan portfolio segment: March 31, 2023 Payment Delay and Term Extension Term Extension Payment Delay Total % of Total Class of Financing Receivable (in millions) Tech & innovation $ 2 $ — $ 5 $ 7 0.3 % Hotel franchise finance — 18 — 18 0.5 Residential — — 1 1 0.0 Total $ 2 $ 18 $ 6 $ 26 0.1 % None of the loans that were modified were in payment default and the loans remain current with contractual payments as of March 31, 2023.
Allowances for Credit Losses	The below tables reflect the activity in the ACL on loans HFI by loan portfolio segment, which includes an estimate of future recoveries: Three Months Ended March 31, 2023 Balance, Provision for (Recovery of) Credit Losses Charge-offs Recoveries Balance, (in millions) Warehouse lending $ 8.4 $ (1.8) $ — $ — $ 6.6 Municipal & nonprofit 15.9 2.5 — — 18.4 Tech & innovation 30.8 7.4 1.8 — 36.4 Equity fund resources 6.4 (3.1) — — 3.3 Other commercial and industrial 85.9 (30.7) 7.3 (3.2) 51.1 CRE - owner occupied 7.1 1.5 — — 8.6 Hotel franchise finance 46.9 0.8 — — 47.7 Other CRE - non-owner occupied 47.4 19.0 — — 66.4 Residential 30.4 1.3 — — 31.7 Residential - EBO — — — — — Construction and land development 27.4 4.1 — — 31.5 Other 3.1 — 0.1 — 3.0 Total $ 309.7 $ 1.0 $ 9.2 $ (3.2) $ 304.7 Three Months Ended March 31, 2022 Balance, Provision for (Recovery of) Credit Losses Charge-offs Recoveries Balance, (in millions) Warehouse lending $ 3.0 $ (0.1) $ — $ — $ 2.9 Municipal & nonprofit 13.7 (0.3) — — 13.4 Tech & innovation 25.7 0.3 — (2.0) 28.0 Equity fund resources 9.6 (3.0) — — 6.6 Other commercial and industrial 103.6 14.3 2.6 (0.4) 115.7 CRE - owner occupied 10.6 (2.5) — — 8.1 Hotel franchise finance 41.5 (10.9) — — 30.6 Other CRE - non-owner occupied 16.9 (1.6) — — 15.3 Residential 12.5 11.3 — — 23.8 Construction and land development 12.5 (1.8) — — 10.7 Other 2.9 (0.4) — — 2.5 Total $ 252.5 $ 5.3 $ 2.6 $ (2.4) $ 257.6 Accrued interest receivable of $297 million and $304 million at March 31, 2023 and December 31, 2022, respectively, was excluded from the estimate of credit losses. Whereas, accrued interest receivable related to the Company's Residential-EBO loan portfolio segment was included in the estimate of credit losses and had an allowance of $8 million and $9 million, as of March 31, 2023 and December 31, 2022, respectively. In addition to the ACL on funded loans HFI, the Company maintains a separate ACL related to off-balance sheet credit exposures, including unfunded loan commitments. This allowance is included in Other liabilities on the Consolidated Balance Sheets. The below table reflects the activity in the ACL on unfunded loan commitments: Three Months Ended March 31, 2023 2022 (in millions) Balance, beginning of period $ 47.0 $ 37.6 Provision for credit losses (2.2) 5.7 Balance, end of period $ 44.8 $ 43.3 The following tables disaggregate the Company's ACL on funded loans HFI and loan balances by measurement methodology: March 31, 2023 Loans Allowance Collectively Evaluated for Credit Loss Individually Evaluated for Credit Loss Total Collectively Evaluated for Credit Loss Individually Evaluated for Credit Loss Total (in millions) Warehouse lending $ 4,788 $ — $ 4,788 $ 6.6 $ — $ 6.6 Municipal & nonprofit 1,536 7 1,543 15.9 2.5 18.4 Tech & innovation 2,441 30 2,471 33.0 3.4 36.4 Equity fund resources 971 — 971 3.3 — 3.3 Other commercial and industrial 5,866 46 5,912 44.7 6.4 51.1 CRE - owner occupied 1,608 37 1,645 8.6 — 8.6 Hotel franchise finance 3,689 211 3,900 47.7 — 47.7 Other CRE - non-owner occupied 5,623 27 5,650 66.4 — 66.4 Residential 13,435 — 13,435 31.7 — 31.7 Residential EBO 1,538 — 1,538 — — — Construction and land development 4,358 30 4,388 31.5 — 31.5 Other 194 — 194 3.0 — 3.0 Total $ 46,047 $ 388 $ 46,435 $ 292.4 $ 12.3 $ 304.7 December 31, 2022 Loans Allowance Collectively Evaluated for Credit Loss Individually Evaluated for Credit Loss Total Collectively Evaluated for Credit Loss Individually Evaluated for Credit Loss Total (in millions) Warehouse lending $ 5,561 $ — $ 5,561 $ 8.4 $ — $ 8.4 Municipal & nonprofit 1,517 7 1,524 13.4 2.5 15.9 Tech & innovation 2,280 13 2,293 30.3 0.5 30.8 Equity fund resources 3,717 — 3,717 6.4 — 6.4 Other commercial and industrial 7,754 39 7,793 80.4 5.5 85.9 CRE - owner occupied 1,612 44 1,656 7.1 — 7.1 Hotel franchise finance 3,607 200 3,807 44.7 2.2 46.9 Other CRE - non-owner occupied 5,428 29 5,457 47.4 — 47.4 Residential 13,996 — 13,996 30.4 — 30.4 Residential EBO 1,884 — 1,884 — — — Construction and land development 3,991 4 3,995 27.4 — 27.4 Other 179 — 179 3.1 — 3.1 Total $ 51,526 $ 336 $ 51,862 $ 299.0 $ 10.7 $ 309.7

Other Borrowings (Tables)

Other Borrowings (Tables)	3 Months Ended
	Mar. 31, 2023
Debt Disclosure [Abstract]
Company's Borrowings	The following table summarizes the Company’s borrowings as of March 31, 2023 and December 31, 2022: March 31, 2023 December 31, 2022 (in millions) Short-Term: Federal funds purchased $ 400 $ 640 BTFP advances 1,300 — FHLB advances 11,000 4,300 Warehouse borrowings 566 — Repurchase agreements 1,508 27 Secured borrowings 46 25 Total short-term borrowings $ 14,820 $ 4,992 Long-Term: AmeriHome senior notes, net of fair value adjustment $ 314 $ 315 Credit linked notes, net of debt issuance costs 719 992 Total long-term borrowings $ 1,033 $ 1,307 Total other borrowings $ 15,853 $ 6,299

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2023
Equity [Abstract]
Summary of Changes in Accumulated Other Comprehensive Income	Three Months Ended March 31, Unrealized holding gains (losses) on AFS securities Unrealized holding losses on SERP Unrealized holding gains (losses) on junior subordinated debt Impairment loss on securities Total (in millions) Balance, December 31, 2022 $ (663.7) $ (0.3) $ 3.0 $ — $ (661.0) Other comprehensive income (loss) before reclassifications 60.1 — (1.1) — 59.0 Amounts reclassified from AOCI 9.3 — — 1.2 10.5 Net current-period other comprehensive income (loss) 69.4 — (1.1) 1.2 69.5 Balance, March 31, 2023 $ (594.3) $ (0.3) $ 1.9 $ 1.2 $ (591.5) Balance, December 31, 2021 $ 16.7 $ (0.3) $ (0.7) $ — $ 15.7 Other comprehensive (loss) income before reclassifications (247.9) — 2.2 — (245.7) Amounts reclassified from AOCI (5.1) — — — (5.1) Net current-period other comprehensive (loss) income (253.0) — 2.2 — (250.8) Balance, March 31, 2022 $ (236.3) $ (0.3) $ 1.5 $ — $ (235.1)

Derivatives and Hedging (Tables

Derivatives and Hedging (Tables)	3 Months Ended
	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position	11. DERIVATIVES AND HEDGING ACTIVITIES The Company is a party to various derivative instruments. The primary types of derivatives that the Company uses are interest rate contracts, forward purchase and sale commitments, and interest rate futures. Generally, these instruments are used to help manage the Company's exposure to interest rate risk related to IRLCs and its inventory of loans HFS and MSRs and also to meet client financing and hedging needs. Derivatives are recorded at fair value on the Consolidated Balance Sheets, after taking into account the effects of bilateral collateral and master netting agreements. These agreements allow the Company to settle all derivative contracts held with the same counterparty on a net basis, and to offset net derivative positions with related cash collateral, where applicable. Derivatives Designated in Hedge Relationships The Company utilizes derivatives that have been designated as part of a hedge relationship in accordance with the applicable accounting guidance to minimize the exposure to changes in benchmark interest rates and volatility of net interest income and EVE to interest rate fluctuations. The primary derivative instruments used to manage interest rate risk are interest rate swaps, which convert the contractual interest rate index of agreed-upon amounts of assets and liabilities (i.e., notional amounts) from either a fixed rate to a variable rate, or from a variable rate to a fixed rate. The Company has pay fixed/receive variable interest rate swaps designated as fair value hedges of certain fixed rate loans. As a result, the Company receives variable-rate interest payments in exchange for making fixed-rate payments over the lives of the contracts without exchanging the notional amounts. The variable-rate interest payments are based on LIBOR and will convert to SOFR plus a spread adjustment upon the discontinuation of LIBOR in June 2023. The Company also had pay fixed/receive variable interest rate swaps, designated as fair value hedges using the last-of-layer method to manage the exposure to changes in fair value associated with fixed rate loans, resulting from changes in the designated benchmark interest rate (federal funds rate). These last-of-layer hedges provided the Company the ability to execute a fair value hedge of the interest rate risk associated with a portfolio of similar prepayable assets whereby the last dollar amount estimated to remain in the portfolio of assets was identified as the hedged item. Under these interest rate swap contracts, the Company received a variable rate and paid a fixed rate on the outstanding notional amount. During the year ended December 31, 2021, the Company completed a partial discontinuation of one of its last-of-layer hedges, which reduced the total hedged amount on these hedges from $1.0 billion to $880 million. During the three months ended March 31, 2022, the Company discontinued the remaining portion of these last-of-layer hedges. The cumulative basis adjustment on the discontinued last-of-layer hedges totaled $31 million, which was allocated across the remaining loan pool upon termination of the hedges and is being amortized over the remaining term. At March 31, 2023, the remaining cumulative basis adjustment on the discontinued last-of-layer hedges totaled $18 million. Derivatives Not Designated in Hedge Relationships Management enters into certain foreign exchange derivative contracts, back-to-back interest rate contracts, and risk participation agreements which are not designated as accounting hedges. Foreign exchange derivative contracts include spot, forward, forward window, and swap contracts. The purpose of these derivative contracts is to mitigate foreign currency risk on transactions entered into, or on behalf of customers. Contracts with customers, along with the related derivative trades that the Company places, are both remeasured at fair value, and are referred to as economic hedges since they economically offset the Company's exposure. The Company's back-to-back interest rate contracts are used to allow customers to manage long-term interest rate risk. Risk participation agreements are entered into with lead banks in certain loan syndications to share in the risk of default on interest rate swaps on the participated loan. The Company also uses derivative financial instruments to manage exposure to interest rate risk within its mortgage banking business related to IRLCs and its inventory of loans HFS and MSRs. The Company economically hedges the changes in fair value associated with changes in interest rates generally by utilizing forward sale commitments and interest rate futures. Fair Value Hedges As of March 31, 2023 and December 31, 2022, the following amounts are reflected on the Consolidated Balance Sheets related to cumulative basis adjustments for outstanding fair value hedges: March 31, 2023 December 31, 2022 Carrying Value of Hedged Assets/(Liabilities) Cumulative Fair Value Hedging Adjustment (1) Carrying Value of Hedged Assets/(Liabilities) Cumulative Fair Value Hedging Adjustment (1) (in millions) Loans HFI, net of deferred loan fees and costs $ 447 $ 13 $ 447 $ 17 (1) Included in the carrying value of the hedged assets/(liabilities). For the Company's derivative instruments that are designated and qualify as a fair value hedge, the gain or loss on the derivative instrument as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in current earnings in the same line item as the offsetting loss or gain on the related interest rate swaps. For loans, the gain or loss on the hedged item is included in interest income, as shown in the table below. Three Months Ended March 31, 2023 2022 Income Statement Classification Gain/(Loss) on Swaps Gain/(Loss) on Hedged Item Gain/(Loss) on Swaps Gain/(Loss) on Hedged Item (in millions) Interest income $ (4.3) $ 4.3 $ 33.5 $ (33.4) In addition to the gains and losses on the Company's outstanding fair value hedges presented in the above table, the Company recognized $3.0 million in interest income related to the amortization of the cumulative basis adjustment on its discontinued last-of-layer hedges during the three months ended March 31, 2023. Fair Values, Volume of Activity, and Gain/Loss Information Related to Derivative Instruments The following table summarizes the fair value of the Company's derivative instruments on a gross basis as of March 31, 2023, December 31, 2022, and March 31, 2022. The change in the notional amounts of these derivatives from March 31, 2022 to March 31, 2023 indicates the volume of the Company's derivative transaction activity during these periods. The derivative asset and liability balances are presented on a gross basis, prior to the application of bilateral collateral and master netting agreements. Total derivative assets and liabilities are adjusted to take into account the impact of legally enforceable master netting agreements that allow the Company to settle all derivative contracts with the same counterparty on a net basis and to offset the net derivative position with the related cash collateral. Where master netting agreements are not in effect or are not enforceable under bankruptcy laws, the Company does not adjust those derivative amounts with counterparties. March 31, 2023 December 31, 2022 March 31, 2022 Fair Value Fair Value Fair Value Notional Derivative Assets Derivative Liabilities Notional Derivative Assets Derivative Liabilities Notional Derivative Assets Derivative Liabilities (in millions) Derivatives designated as hedging instruments: Fair value hedges Interest rate swaps $ 470 $ 14 $ 1 $ 476 $ 18 $ — $ 499 $ 2 $ 23 Total 470 14 1 476 18 — 499 2 23 Derivatives not designated as hedging instruments (1): Foreign currency contracts $ 189 $ 2 $ 1 $ 250 $ 1 $ 9 $ 151 $ 1 $ 2 Forward purchase contracts 7,814 34 5 2,709 1 13 5,019 4 65 Forward sales contracts 9,702 3 64 4,985 16 8 9,557 149 6 Futures purchase contracts (2) 138,422 — — 150,943 — — 202,818 — — Futures sales contracts (2) 148,132 — — 159,649 — — 219,617 — — Interest rate lock commitments 1,557 14 1 1,459 5 3 2,420 6 17 Interest rate contracts 1,983 5 6 1,538 6 6 64 — — Risk participation agreements 51 — — 48 — — — — — Total $ 307,850 $ 58 $ 77 $ 321,581 $ 29 $ 39 $ 439,646 $ 160 $ 90 Margin 5 (14) 4 1 — 65 Total, including margin $ 307,850 $ 63 $ 63 $ 321,581 $ 33 $ 40 $ 439,646 $ 160 $ 155 (1) Relate to economic hedging arrangements. (2) The Company enters into forward purchase and sales contracts that are subject to daily remargining and almost all of which are based on three-month LIBOR to hedge against its MSR valuation exposure. The notional amount on these contracts is substantial as these contracts have a duration of only 0.25 years and are intended to cover the longer duration of MSR hedges. The fair value of derivative contracts, after taking into account the effects of master netting agreements, is included in other assets or other liabilities on the Consolidated Balance Sheets, as summarized in the table below: March 31, 2023 December 31, 2022 March 31, 2022 Gross amount of recognized assets (liabilities) Gross offset Net assets (liabilities) Gross amount of recognized assets (liabilities) Gross offset Net assets (liabilities) Gross amount of recognized assets (liabilities) Gross offset Net assets (liabilities) (in millions) Derivatives subject to master netting arrangements: Assets Forward purchase contracts $ 30 $ — $ 30 $ 1 $ — $ 1 $ 3 $ — $ 3 Forward sales contracts 3 — 3 13 — 13 149 — 149 Interest rate contracts 14 — 14 18 — 18 2 — 2 Margin 5 — 5 4 — 4 — — — Netting — (38) (38) — (17) (17) — (130) (130) $ 52 $ (38) $ 14 $ 36 $ (17) $ 19 $ 154 $ (130) $ 24 Liabilities Forward purchase contracts $ (4) $ — $ (4) $ (12) $ — $ (12) $ (64) $ — $ (64) Forward sales contracts (52) — (52) (8) — (8) (6) — (6) Interest rate contracts (1) — (1) — — — (23) — (23) Margin 14 — 14 (1) — (1) (65) — (65) Netting — 38 38 — 17 17 — 130 130 $ (43) $ 38 $ (5) $ (21) $ 17 $ (4) $ (158) $ 130 $ (28) Derivatives not subject to master netting arrangements: Assets Foreign currency contracts $ 2 $ — $ 2 $ 1 $ — $ 1 $ — $ — $ — Forward purchase contracts 4 — 4 — — — 1 — 1 Forward sales contracts — — — 3 — 3 1 — 1 Interest rate lock commitments 14 — 14 5 — 5 6 — 6 Interest rate contracts 5 — 5 6 — 6 — — — $ 25 $ — $ 25 $ 15 $ — $ 15 $ 8 $ — $ 8 Liabilities Foreign currency contracts $ (1) $ — $ (1) $ (9) $ — $ (9) $ (2) $ — $ (2) Forward purchase contracts (1) — (1) (1) — (1) — — — Forward sales contracts (12) — (12) — — — — — — Interest rate lock commitments (1) — (1) (3) — (3) (18) — (18) Interest rate contracts (6) — (6) (6) — (6) — — — $ (21) $ — $ (21) $ (19) $ — $ (19) $ (20) $ — $ (20) Total derivatives and margin Assets $ 77 $ (38) $ 39 $ 51 $ (17) $ 34 $ 162 $ (130) $ 32 Liabilities $ (64) $ 38 $ (26) $ (40) $ 17 $ (23) $ (178) $ 130 $ (48) The following table summarizes the net gain (loss) on derivatives included in income: Three Months Ended March 31, 2023 2022 ($ in millions) Net gain (loss) on loan origination and sale activities: Interest rate lock commitments $ 11.5 $ (20.8) Forward contracts (36.8) 241.3 Interest rate swaps 1.2 — Other contracts (0.5) (3.7) Total loss $ (24.6) $ 216.8 Net loan servicing revenue: Forward contracts $ (1.6) $ (34.9) Futures contracts (4.0) (22.0) Interest rate swaps 19.0 — Total gain $ 13.4 $ (56.9) Counterparty Credit Risk
Schedule of Derivative Assets at Fair Value	As of March 31, 2023 and December 31, 2022, the following amounts are reflected on the Consolidated Balance Sheets related to cumulative basis adjustments for outstanding fair value hedges: March 31, 2023 December 31, 2022 Carrying Value of Hedged Assets/(Liabilities) Cumulative Fair Value Hedging Adjustment (1) Carrying Value of Hedged Assets/(Liabilities) Cumulative Fair Value Hedging Adjustment (1) (in millions) Loans HFI, net of deferred loan fees and costs $ 447 $ 13 $ 447 $ 17 (1) Included in the carrying value of the hedged assets/(liabilities).
Derivative Instruments, Gain (Loss)	For the Company's derivative instruments that are designated and qualify as a fair value hedge, the gain or loss on the derivative instrument as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in current earnings in the same line item as the offsetting loss or gain on the related interest rate swaps. For loans, the gain or loss on the hedged item is included in interest income, as shown in the table below. Three Months Ended March 31, 2023 2022 Income Statement Classification Gain/(Loss) on Swaps Gain/(Loss) on Hedged Item Gain/(Loss) on Swaps Gain/(Loss) on Hedged Item (in millions) Interest income $ (4.3) $ 4.3 $ 33.5 $ (33.4) In addition to the gains and losses on the Company's outstanding fair value hedges presented in the above table, the Company recognized $3.0 million in interest income related to the amortization of the cumulative basis adjustment on its discontinued last-of-layer hedges during the three months ended March 31, 2023.

Earnings per Share (Tables)

Earnings per Share (Tables)	3 Months Ended
	Mar. 31, 2023
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table presents the calculation of basic and diluted EPS: Three Months Ended March 31, 2023 2022 (in millions, except per share amounts) Weighted average shares - basic 108.1 106.0 Dilutive effect of stock awards 0.2 0.6 Weighted average shares - diluted 108.3 106.6 Net income available to common stockholders $ 139.0 $ 236.9 Earnings per share - basic 1.29 2.23 Earnings per share - diluted 1.28 2.22

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Summary of Contractual Amounts for Unfunded Commitments and Letters of Credit	A summary of the contractual amounts for unfunded commitments and letters of credit are as follows: March 31, 2023 December 31, 2022 (in millions) Commitments to extend credit, including unsecured loan commitments of $1,254 at March 31, 2023 and $1,209 at December 31, 2022 $ 17,927 $ 18,674 Credit card commitments and financial guarantees 392 379 Letters of credit, including unsecured letters of credit of $9 at March 31, 2023 and $7 at December 31, 2022 260 265 Total $ 18,579 $ 19,318

Fair Value Accounting (Tables)

Fair Value Accounting (Tables)	3 Months Ended
	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Gains and Losses from Fair Value Changes Included in Consolidated Statement of Operations	The following table presents unrealized gains and losses from fair value changes on junior subordinated debt:
Fair Value of Assets and Liabilities	The fair value of assets and liabilities measured at fair value on a recurring basis was determined using the following inputs: Fair Value Measurements at the End of the Reporting Period Using: Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Fair Value (in millions) March 31, 2023 Assets: Available-for-sale debt securities CLO $ — $ 2,436 $ — $ 2,436 Commercial MBS issued by GSEs — 62 — 62 Corporate debt securities — 358 — 358 Private label residential MBS — 1,175 — 1,175 Residential MBS issued by GSEs — 1,787 — 1,787 Tax-exempt — 860 — 860 U.S. Treasury securities 900 — — 900 Other 27 40 — 67 Total AFS debt securities $ 927 $ 6,718 $ — $ 7,645 Equity securities Common stock $ 3 $ — $ — $ 3 CRA investments 25 14 — 39 Preferred stock 94 5 — 99 Total equity securities $ 122 $ 19 $ — $ 141 Loans HFS (2) $ — $ 1,100 $ 1 $ 1,101 MSRs — — 910 910 Derivative assets (1) — 63 14 77 Liabilities: Junior subordinated debt (3) $ — $ — $ 64 $ 64 Derivative liabilities (1) — 63 1 64 (1) See "Note 11. Derivatives and Hedging Activities." In addition, the carrying value of loans is decreased by $13 million as of March 31, 2023 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates. (2) Includes only the portion of loans HFS that is recorded at fair value at each reporting period pursuant to the election of FVO treatment. (3) Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment. Fair Value Measurements at the End of the Reporting Period Using: Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Fair Value (in millions) December 31, 2022 Assets: Available-for-sale debt securities CLO $ — $ 2,706 $ — $ 2,706 Commercial MBS issued by GSEs — 97 — 97 Corporate debt securities — 390 — 390 Private label residential MBS — 1,199 — 1,199 Residential MBS issued by GSEs — 1,740 — 1,740 Tax-exempt — 891 — 891 Other 24 45 — 69 Total AFS debt securities $ 24 $ 7,068 $ — $ 7,092 Equity securities Common stock $ 3 $ — $ — $ 3 CRA investments 24 25 — 49 Preferred stock 108 — — 108 Total equity securities $ 135 $ 25 $ — $ 160 Loans - HFS $ — $ 1,172 $ 1 $ 1,173 Mortgage servicing rights — — 1,148 1,148 Derivative assets (1) — 46 5 51 Liabilities: Junior subordinated debt (2) $ — $ — $ 63 $ 63 Derivative liabilities (1) — 37 3 40 (1) See "Note 11. Derivatives and Hedging Activities." In addition, the carrying value of loans is decreased by $17 million as of December 31, 2022 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates. (2) Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.
Change in Level 3 Liabilities Measured at Fair Value on Recurring Basis	he change in Level 3 liabilities measured at fair value on a recurring basis included in OCI was as follows: Junior Subordinated Debt Three Months Ended March 31, 2023 2022 (in millions) Beginning balance $ (62.5) $ (67.4) Change in fair value (1) (1.5) 2.9 Ending balance $ (64.0) $ (64.5)
Assets Measured at Fair Value on Nonrecurring Basis	The following table presents such assets carried on the Consolidated Balance Sheet by caption and by level within the ASC 825 hierarchy: Fair Value Measurements at the End of the Reporting Period Using Total Quoted Prices in Active Markets for Identical Assets Active Markets for Similar Assets Unobservable Inputs (in millions) As of March 31, 2023: Loans HFI $ 272 $ — $ — $ 272 Other assets acquired through foreclosure 11 — — 11 As of December 31, 2022: Loans HFI $ 295 $ — $ — $ 295 Other assets acquired through foreclosure 11 — — 11
Estimated Fair Value of Financial Instruments	The estimated fair value of the Company’s financial instruments is as follows: March 31, 2023 Carrying Amount Fair Value Level 1 Level 2 Level 3 Total (in millions) Financial assets: Investment securities: HTM $ 1,325 $ — $ 1,185 $ — $ 1,185 AFS 7,645 927 6,718 — 7,645 Equity 141 122 19 — 141 Derivative assets 77 — 63 14 77 Loans HFS (1) 7,022 — 7,010 14 7,024 Loans HFI, net 46,130 — — 43,680 43,680 Mortgage servicing rights 910 — — 910 910 Accrued interest receivable 350 — 350 — 350 Financial liabilities: Deposits $ 47,587 $ — $ 47,584 $ — $ 47,584 Other borrowings 15,853 — 15,771 — 15,771 Qualifying debt 895 — 558 77 635 Derivative liabilities 64 — 63 1 64 Accrued interest payable 65 — 65 — 65 (1) Includes loans transferred from HFI to HFS. As these transferred loans are salable into active markets, the fair value is based on quoted market or contracted selling prices or a market price equivalent, which are categorized as Level 2 in the fair value hierarchy. December 31, 2022 Carrying Amount Fair Value Level 1 Level 2 Level 3 Total (in millions) Financial assets: Investment securities: HTM $ 1,289 $ — $ 1,112 $ — $ 1,112 AFS 7,092 24 7,068 — 7,092 Equity securities 160 135 25 — 160 Derivative assets 51 — 46 5 51 Loans HFS 1,184 — 1,172 1 1,173 Loans HFI, net 51,552 — — 47,679 47,679 Mortgage servicing rights 1,148 — — 1,148 1,148 Accrued interest receivable 357 — 357 — 357 Financial liabilities: Deposits $ 53,644 $ — $ 53,698 $ — $ 53,698 Other borrowings 6,299 — 6,261 — 6,261 Qualifying debt 893 — 735 75 810 Derivative liabilities 40 — 37 3 40 Accrued interest payable 35 — 35 — 35

Segments (Tables)

Segments (Tables)	3 Months Ended
	Mar. 31, 2023
Segment Reporting [Abstract]
Operating Segment Information	The following is a summary of operating segment information for the periods indicated: Balance Sheet: Consolidated Company Commercial Consumer Related Corporate & Other At March 31, 2023: (in millions) Assets: Cash, cash equivalents, and investment securities $ 13,132 $ 12 $ — $ 13,120 Loans HFS 7,022 4,732 2,290 — Loans HFI, net of deferred fees and costs 46,435 27,282 19,153 — Less: allowance for credit losses (305) (255) (50) — Net loans HFI 46,130 27,027 19,103 — Other assets acquired through foreclosure, net 11 11 — — Goodwill and other intangible assets, net 677 293 384 — Other assets 4,075 550 1,703 1,822 Total assets $ 71,047 $ 32,625 $ 23,480 $ 14,942 Liabilities: Deposits $ 47,587 $ 21,991 $ 20,017 $ 5,579 Borrowings and qualifying debt 16,748 8 927 15,813 Other liabilities 1,191 97 302 792 Total liabilities 65,526 22,096 21,246 22,184 Allocated equity: 5,521 2,545 1,613 1,363 Total liabilities and stockholders' equity $ 71,047 $ 24,641 $ 22,859 $ 23,547 Excess funds provided (used) — (7,984) (621) 8,605 Income Statement: Three Months Ended March 31, 2023: (in millions) Net interest income $ 609.9 $ 389.4 $ 199.3 $ 21.2 Provision for credit losses 19.4 (2.7) 1.5 20.6 Net interest income (expense) after provision for credit losses 590.5 392.1 197.8 0.6 Non-interest income (58.0) (96.7) 51.0 (12.3) Non-interest expense 347.9 136.0 192.0 19.9 Income (loss) before income taxes 184.6 159.4 56.8 (31.6) Income tax expense (benefit) 42.4 38.5 12.8 (8.9) Net income (loss) $ 142.2 $ 120.9 $ 44.0 $ (22.7) Balance Sheet: Consolidated Company Commercial Consumer Related Corporate At December 31, 2022: (in millions) Assets: Cash, cash equivalents, and investment securities $ 9,803 $ 12 $ — $ 9,791 Loans held for sale 1,184 — 1,184 — Loans, net of deferred fees and costs 51,862 31,414 20,448 — Less: allowance for credit losses (310) (262) (48) — Total loans 51,552 31,152 20,400 — Other assets acquired through foreclosure, net 11 11 — — Goodwill and other intangible assets, net 680 293 387 — Other assets 4,504 435 2,180 1,889 Total assets $ 67,734 $ 31,903 $ 24,151 $ 11,680 Liabilities: Deposits $ 53,644 $ 29,494 $ 18,492 $ 5,658 Borrowings and qualifying debt 7,192 27 340 6,825 Other liabilities 1,542 83 656 803 Total liabilities 62,378 29,604 19,488 13,286 Allocated equity: 5,356 2,684 1,691 981 Total liabilities and stockholders' equity $ 67,734 $ 32,288 $ 21,179 $ 14,267 Excess funds provided (used) — 385 (2,972) 2,587 Income Statements: Three Months Ended March 31, 2022: (in millions) Net interest income $ 449.5 $ 334.9 $ 183.2 $ (68.6) Provision for (recovery of) credit losses 9.0 0.6 10.5 (2.1) Net interest income (expense) after provision for credit losses 440.5 334.3 172.7 (66.5) Non-interest income 106.3 16.9 79.2 10.2 Non-interest expense 248.6 114.4 125.0 9.2 Income (loss) before income taxes 298.2 236.8 126.9 (65.5) Income tax expense (benefit) 58.1 56.2 30.4 (28.5) Net income (loss) $ 240.1 $ 180.6 $ 96.5 $ (37.0)

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2023 Subsidiary
Significant Of Accounting Policies [Line Items]
Number Of Unconsolidated Subsidiaries	8

Investment Securities - Carryin

Investment Securities - Carrying Amounts and Fair Values of Investment Securities (Detail) - USD ($) $ in Millions	Mar. 31, 2023		Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	$ 141	[1]	$ 160	[2]
Debt Securities, Held-to-maturity	1,325		1,289
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	2		0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(142)		(177)
Debt Securities, Held-to-maturity, Fair Value	1,185		1,112
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	794		890
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	5		9
Debt Securities, Available-for-sale	7,645	[1]	7,092	[2]
Securities available for sale Total, Amortized Cost	8,434		7,973
Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	8		8
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0		1
Debt Securities, Available-for-sale	62		97
Securities available for sale Total, Amortized Cost	70		104
Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	53		39
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0		0
Debt Securities, Available-for-sale	358		390
Securities available for sale Total, Amortized Cost	411		429
Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	195		198
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0		0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(38)		(39)
Debt Securities, Held-to-maturity, Fair Value	157		159
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	224		243
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0		0
Debt Securities, Available-for-sale	1,175		1,199
Securities available for sale Total, Amortized Cost	1,399		1,442
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	349		383
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1		0
Debt Securities, Available-for-sale	1,788		1,740
Securities available for sale Total, Amortized Cost	2,136		2,123
Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	1,130		1,091
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	2		0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(104)		(138)
Debt Securities, Held-to-maturity, Fair Value	1,028		953
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	86		115
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1		2
Debt Securities, Available-for-sale	860		891
Securities available for sale Total, Amortized Cost	945		1,004
US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0
Debt Securities, Available-for-sale	900
Securities available for sale Total, Amortized Cost	900
CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	39		49
Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	99		108
Collateralized Loan Obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	63		90
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0		0
Debt Securities, Available-for-sale	2,436		2,706
Securities available for sale Total, Amortized Cost	2,499		2,796
Other Security Investments
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	11		12
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	3		6
Debt Securities, Available-for-sale	66		69
Securities available for sale Total, Amortized Cost	74		75
AAA [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0	[1]	0	[2]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	1,349	[1]	1,479	[2]
AAA [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
AAA [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
AAA [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	1,133		1,158
AAA [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
AAA [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	11		11
AAA [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0
AAA [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
AAA [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
AAA [Member] | Collateralized Loan Obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	205		310
AAA [Member] | Other Security Investments
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
Split-rated AAA/AA Plus [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	25	[1]	24	[2]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	2,766	[1]	1,852	[2]
Split-rated AAA/AA Plus [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	62		97
Split-rated AAA/AA Plus [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
Split-rated AAA/AA Plus [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	0		0
Split-rated AAA/AA Plus [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	1,788		1,740
Split-rated AAA/AA Plus [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	16		15
Split-rated AAA/AA Plus [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	900
Split-rated AAA/AA Plus [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	25		24
Split-rated AAA/AA Plus [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
Split-rated AAA/AA Plus [Member] | Collateralized Loan Obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
Split-rated AAA/AA Plus [Member] | Other Security Investments
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
AA Plus to AA- [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0	[1]	0	[2]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	2,569	[1]	2,563	[2]
AA Plus to AA- [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
AA Plus to AA- [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
AA Plus to AA- [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	42		41
AA Plus to AA- [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
AA Plus to AA- [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	380		392
AA Plus to AA- [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0
AA Plus to AA- [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
AA Plus to AA- [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
AA Plus to AA- [Member] | Collateralized Loan Obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	2,138		2,121
AA Plus to AA- [Member] | Other Security Investments
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	9		9
A Plus to A- [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0	[1]	0	[2]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	566	[1]	783	[2]
A Plus to A- [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
A Plus to A- [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	72		74
A Plus to A- [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	0		0
A Plus to A- [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
A Plus to A- [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	392		425
A Plus to A- [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0
A Plus to A- [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
A Plus to A- [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
A Plus to A- [Member] | Collateralized Loan Obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	93		275
A Plus to A- [Member] | Other Security Investments
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	9		9
BBB Plus to BBB- [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	71	[1]	82	[2]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	256	[1]	343	[2]
BBB Plus to BBB- [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
BBB Plus to BBB- [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	227		316
BBB Plus to BBB- [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	0		0
BBB Plus to BBB- [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
BBB Plus to BBB- [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	0		0
BBB Plus to BBB- [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0
BBB Plus to BBB- [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
BBB Plus to BBB- [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	71		82
BBB Plus to BBB- [Member] | Collateralized Loan Obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
BBB Plus to BBB- [Member] | Other Security Investments
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	29		27
BB Plus and below [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	18	[1]	17	[2]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	62	[1]	6	[2]
BB Plus and below [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
BB Plus and below [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	59		0
BB Plus and below [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	0		0
BB Plus and below [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
BB Plus and below [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	0		0
BB Plus and below [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0
BB Plus and below [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
BB Plus and below [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	18		17
BB Plus and below [Member] | Collateralized Loan Obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
BB Plus and below [Member] | Other Security Investments
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	3		6
Corporate Credit Quality Indicator Unrated [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	27	[1]	37	[2]
Debt Securities, Held-to-maturity	1,325		1,289
Debt Securities, Available-for-sale	77	[1]	66	[2]
Corporate Credit Quality Indicator Unrated [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
Corporate Credit Quality Indicator Unrated [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
Corporate Credit Quality Indicator Unrated [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	195		198
Debt Securities, Available-for-sale	0		0
Corporate Credit Quality Indicator Unrated [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
Corporate Credit Quality Indicator Unrated [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	1,130		1,091
Debt Securities, Available-for-sale	61		48
Corporate Credit Quality Indicator Unrated [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0
Corporate Credit Quality Indicator Unrated [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	14		25
Corporate Credit Quality Indicator Unrated [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	10		9
Corporate Credit Quality Indicator Unrated [Member] | Collateralized Loan Obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
Corporate Credit Quality Indicator Unrated [Member] | Other Security Investments
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	$ 16		$ 18
[1]ratings differ, the Company uses an average of the available ratings by major credit agencies.[2]For rated securities, if ratings differ, the Company uses an average of the available ratings by major credit agencies.

Investment Securities - Additio

Investment Securities - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) positions	Mar. 31, 2022 USD ($)	Dec. 31, 2022 positions
Pledged Securities [Abstract]
Accrued Investment Income Receivable	$ 4
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | positions	811		832
Debt Securities, Available-for-sale, Realized Gain (Loss)	$ (12.5)	$ 6.9
Debt Securities, Available-for-Sale, Pledged Status [Extensible Enumeration]	Asset Pledged as Collateral		Asset Pledged as Collateral

Investment Securities - Unreali

Investment Securities - Unrealized Losses and Fair Value of Investment Securities in Continuous Unrealized Loss Position (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) positions	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) positions
Debt Securities, Available-for-sale [Line Items]
Unrealized gains (losses) on assets measured at fair value, net	$ (8.5)	$ (6.7)
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	794		$ 890
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	723		571
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	71		319
Debt Securities, Available-for-sale, Unrealized Loss Position	7,528		6,900
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	4,353		2,467
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 3,175		$ 4,433
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | positions	811		832
Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 53		$ 39
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	47		11
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	6		28
Debt Securities, Available-for-sale, Unrealized Loss Position	351		383
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	290		120
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	61		263
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	349		383
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	342		301
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	7		82
Debt Securities, Available-for-sale, Unrealized Loss Position	1,747		1,701
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,525		1,101
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	222		600
Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	86		115
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	78		22
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	8		93
Debt Securities, Available-for-sale, Unrealized Loss Position	837		830
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	588		78
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	249		752
Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	224		243
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	216		216
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	8		27
Debt Securities, Available-for-sale, Unrealized Loss Position	1,161		1,191
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,064		912
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	97		279
Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	9		8
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	8		4
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1		4
Debt Securities, Available-for-sale, Unrealized Loss Position	60		60
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	37		14
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	23		46
US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position	892
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	892
Other Security Investments
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	10		12
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	8		8
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	2		4
Debt Securities, Available-for-sale, Unrealized Loss Position	54		52
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	36		26
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	18		26
Collateralized Loan Obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	63		90
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	24		9
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	39		81
Debt Securities, Available-for-sale, Unrealized Loss Position	2,426		2,683
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	813		216
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 1,613		$ 2,467

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Fair Value of Investment Securities by Contractual Maturities (Detail) - USD ($) $ in Millions	Mar. 31, 2023		Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost	$ 9
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost	18
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Amortized Cost	1,070
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	8
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value	18
Held-to-maturity Securities, Debt Maturities, Rolling Year Six Through Ten, Fair Value	32
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	33
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value	969
Debt Securities, Held-to-maturity, Maturity, without Single Maturity Date, Fair Value	158
Debt Securities, Held-to-maturity, Maturity, without Single Maturity Date, Amortized Cost	195
Debt Securities, Held-to-maturity	1,325		$ 1,289
Debt Securities, Held-to-maturity, Fair Value	1,185		1,112
Securities available for sale, Due in one year or less, Amortized Cost	910
Securities available for sale, After one year through five years, Amortized Cost	166
Securities available for sale, After five years through ten years, Amortized Cost	879
Securities available for sale, After ten years, Amortized Cost	2,874
Securities available for sale, Mortgage backed securities, Amortized Cost	3,605
Securities available for sale Total, Amortized Cost	8,434		7,973
Securities available for sale, Due in one year or less, Estimated Fair Value	910
Securities available for sale, After one year through five years, Estimated Fair Value	151
Securities available for sale, After five years through ten years, Estimated Fair Value	828
Securities available for sale, After ten years, Estimated Fair Value	2,731
Securities available for sale, Mortgage backed securities, Estimated Fair Value	3,025
Securities available for sale Total, Estimated Fair Value	$ 7,645	[1]	$ 7,092	[2]
[1]ratings differ, the Company uses an average of the available ratings by major credit agencies.[2]For rated securities, if ratings differ, the Company uses an average of the available ratings by major credit agencies.

Investment Securities - Investm

Investment Securities - Investment Securities by Credit Rating Type (Detail) - USD ($) $ in Millions	Mar. 31, 2023		Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	$ 1,325		$ 1,289
Debt Securities, Available-for-sale	7,645	[1]	7,092	[2]
Investment securities - equity	141	[1]	160	[2]
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	1,788		1,740
Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	1,130		1,091
Debt Securities, Available-for-sale	860		891
Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	62		97
Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	195		198
Debt Securities, Available-for-sale	1,175		1,199
US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	900
Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	99		108
Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	358		390
CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	39		49
Other Security Investments
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	66		69
Collateralized Loan Obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	2,436		2,706
Common Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	3		3
A Plus to A- [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	566	[1]	783	[2]
Investment securities - equity	0	[1]	0	[2]
A Plus to A- [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
A Plus to A- [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	392		425
A Plus to A- [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
A Plus to A- [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Debt Securities, Available-for-sale	0		0
A Plus to A- [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0
A Plus to A- [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
A Plus to A- [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	72		74
A Plus to A- [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
A Plus to A- [Member] | Other Security Investments
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	9		9
A Plus to A- [Member] | Collateralized Loan Obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	93		275
Corporate Credit Quality Indicator Unrated [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	1,325		1,289
Debt Securities, Available-for-sale	77	[1]	66	[2]
Investment securities - equity	27	[1]	37	[2]
Corporate Credit Quality Indicator Unrated [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
Corporate Credit Quality Indicator Unrated [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	1,130		1,091
Debt Securities, Available-for-sale	61		48
Corporate Credit Quality Indicator Unrated [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
Corporate Credit Quality Indicator Unrated [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	195		198
Debt Securities, Available-for-sale	0		0
Corporate Credit Quality Indicator Unrated [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0
Corporate Credit Quality Indicator Unrated [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	10		9
Corporate Credit Quality Indicator Unrated [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
Corporate Credit Quality Indicator Unrated [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	14		25
Corporate Credit Quality Indicator Unrated [Member] | Other Security Investments
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	16		18
Corporate Credit Quality Indicator Unrated [Member] | Collateralized Loan Obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	0		0
Corporate Credit Quality Indicator Unrated [Member] | Common Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	$ 3		$ 3
[1]ratings differ, the Company uses an average of the available ratings by major credit agencies.[2]For rated securities, if ratings differ, the Company uses an average of the available ratings by major credit agencies.

Investment Securities - Gross G

Investment Securities - Gross Gains and (Losses) on Sales of Investments (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Debt Securities, Available-for-sale, Realized Gain (Loss)	$ (12.5)	$ 6.9
Debt Securities, Available-for-Sale, Realized Gain	3.4	6.9
Debt Securities, Available-for-Sale, Realized Loss	$ (15.9)	$ 0

Investment Securities Investmen

Investment Securities Investment Securities - Allowance for Credit Losses - HTM (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	$ 6.5	$ 3.2	$ 5.2	$ 5.2
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Credit Loss Expense (Reversal)	(1.3)	(2)
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	0	$ 0
Accrued Investment Income Receivable	4
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	17.1
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	0
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	2.2		$ 0
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Not Previously Recorded	$ (19.3)

Loans Held For Sale (Details)

Loans Held For Sale (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Loans and Leases Receivable Disclosure [Line Items]
Loans Receivable Held-for-sale, Amount	$ 7,022		$ 1,184
Proceeds from Sale of Mortgage Loans Held-for-sale	(107.4)	$ (336.9)
MSR capitalized upon sale of loan	142.4	204.1
Provision for and change in estimate of liability for losses under representations and warranties	2.4	0.8
Change in fair value of loans held for sale	6.6	(66.2)
Unrealized Gain (Loss) on Derivatives	(22.2)	81.2
Derivative Instruments Not Designated as Hedging Instruments, Gain	(2.4)	135.6
Derivative, Gain (Loss) on Derivative, Net	(24.6)	216.8
Gain (Loss) on Sales of Loans, Net	19.4	18.6
Loan acquisition and origination fees	12	18.3
Net gain on loan origination and sale activities	31.4	36.9
Transfer of Portfolio Loans and Leases to Held-for-sale	5,910.4	0
Purchased from Ginnie Mae
Loans and Leases Receivable Disclosure [Line Items]
Loans Receivable Held-for-sale, Amount	5		0
Purchased from correspondent seller
Loans and Leases Receivable Disclosure [Line Items]
Loans Receivable Held-for-sale, Amount	551		591
Loans Insured or Guaranteed by US Government Authorities
Loans and Leases Receivable Disclosure [Line Items]
Loans Receivable Held-for-sale, Amount	556		591
US Government Agency Insured Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans Receivable Held-for-sale, Amount	556		$ 593
Commercial Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Transfer of Portfolio Loans and Leases to Held-for-sale	107	0
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Transfer of Portfolio Loans and Leases to Held-for-sale	5,326	0
Residential Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Transfer of Portfolio Loans and Leases to Held-for-sale	$ 477	$ 0

Loans, Leases and Allowance f_2

Loans, Leases and Allowance for Credit Losses - Schedule of Held for Investment Loan Portfolio Composition of Loans, Leases and Allowance for Credit Losses (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		$ 46,435	$ 51,862
Loans and Leases Receivable, Allowance		(304.7)	(309.7)	$ (257.6)	$ (252.5)
Loans, net		46,130	51,552
Net deferred loan fees and costs		(126)	(141)
Receivable with Imputed Interest, Premium		191	195
Loans Receivable Held-for-sale, Amount		7,022	1,184
Warehouse lending [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		4,788	5,561
Loans and Leases Receivable, Allowance		(6.6)	(8.4)	(2.9)	(3)
Municipal and nonprofit [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		1,543	1,524
Loans and Leases Receivable, Allowance		(18.4)	(15.9)	(13.4)	(13.7)
Tech & Innovation [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		2,471	2,293
Loans and Leases Receivable, Allowance		(36.4)	(30.8)	(28)	(25.7)
Equity fund resources
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		971	3,717
Loans and Leases Receivable, Allowance		(3.3)	(6.4)	(6.6)	(9.6)
Other commercial and industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		5,912	7,793
Loans and Leases Receivable, Allowance		(51.1)	(85.9)	(115.7)	(103.6)
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		1,645	1,656
Loans and Leases Receivable, Allowance		(8.6)	(7.1)	(8.1)	(10.6)
Hotel franchise finance [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		3,900	3,807
Loans and Leases Receivable, Allowance		(47.7)	(46.9)	(30.6)	(41.5)
Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		5,650	5,457
Loans and Leases Receivable, Allowance		(66.4)	(47.4)	(15.3)	(16.9)
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		13,435	13,996
Loans and Leases Receivable, Allowance		(31.7)	(30.4)	(23.8)	(12.5)
Residential - EBO
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 1,884	1,538	1,884
Loans and Leases Receivable, Allowance		0	0
Construction And Land Development Land [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		4,388	3,995
Other, loan segment
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		194	179
Loans and Leases Receivable, Allowance		$ (3)	$ (3.1)	$ (2.5)	$ (2.9)

Loans, Leases and Allowance f_3

Loans, Leases and Allowance for Credit Losses - Summary of Recorded Investment in Nonaccrual Loans and Loans Past Due 90 Days Still Accruing Interest by Loan Class (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with an Allowance for Credit Loss	$ 63			$ 65
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	496			582
Financing Receivable, Excluding Accrued Interest, Nonaccrual	107			85
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	44			20
Loans Receivable Held-for-sale, Amount	7,022			1,184
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	0.8	$ 1.1
Loans and Leases Receivable, Net of Deferred Income	46,435			51,862
Warehouse lending [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income	4,788			5,561
Municipal and nonprofit [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with an Allowance for Credit Loss	13			7
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0			0
Financing Receivable, Excluding Accrued Interest, Nonaccrual	13			7
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	0			0
Loans and Leases Receivable, Net of Deferred Income	1,543			1,524
Tech & Innovation [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with an Allowance for Credit Loss	9			1
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0			0
Financing Receivable, Excluding Accrued Interest, Nonaccrual	9			1
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	0			0
Loans and Leases Receivable, Net of Deferred Income	2,471			2,293
Equity fund resources
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income	971			3,717
Other commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with an Allowance for Credit Loss	9			23
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0			0
Financing Receivable, Excluding Accrued Interest, Nonaccrual	29			24
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	20			1
Loans and Leases Receivable, Net of Deferred Income	5,912			7,793
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with an Allowance for Credit Loss	2			2
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0			0
Financing Receivable, Excluding Accrued Interest, Nonaccrual	21			12
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	19			10
Loans and Leases Receivable, Net of Deferred Income	1,645			1,656
Hotel franchise finance [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with an Allowance for Credit Loss				10
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing				0
Financing Receivable, Excluding Accrued Interest, Nonaccrual				10
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance				0
Loans and Leases Receivable, Net of Deferred Income	3,900			3,807
Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with an Allowance for Credit Loss	2			3
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0			0
Financing Receivable, Excluding Accrued Interest, Nonaccrual	5			8
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	3			5
Loans and Leases Receivable, Net of Deferred Income	5,650			5,457
Residential Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with an Allowance for Credit Loss	28			19
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	1			0
Financing Receivable, Excluding Accrued Interest, Nonaccrual	28			19
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	0			0
Loans and Leases Receivable, Net of Deferred Income	13,435			13,996
Residential - EBO
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with an Allowance for Credit Loss	0
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	495			582
Financing Receivable, Excluding Accrued Interest, Nonaccrual	0
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	0
Loans and Leases Receivable, Net of Deferred Income	1,538		$ 1,884	1,884
Construction And Land Development [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with an Allowance for Credit Loss	0			0
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0			0
Financing Receivable, Excluding Accrued Interest, Nonaccrual	2			4
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance	2			4
Loans and Leases Receivable, Net of Deferred Income	4,388			3,995
Construction And Land Development Land [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income	4,388			3,995
Other, loan segment
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 194			$ 179

Contractual Aging of Loan Portf

Contractual Aging of Loan Portfolio by Segment (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		$ 46,435	$ 51,862
Financing Receivable, Originated in Current Fiscal Year		2,571	15,460
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		13,191	15,098
Financing Receivable, Originated Two Years before Latest Fiscal Year		12,892	3,997
Financing Receivable, Originated Three Years before Latest Fiscal Year		3,663	2,319
Financing Receivable, Originated Four Years before Latest Fiscal Year		2,004	1,427
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		3,028	2,216
Financing Receivable, Revolving		9,086	11,345
Pass [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		45,683	51,145
Financing Receivable, Originated in Current Fiscal Year		2,531	15,349
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		13,081	14,914
Financing Receivable, Originated Two Years before Latest Fiscal Year		12,716	3,853
Financing Receivable, Originated Three Years before Latest Fiscal Year		3,487	2,167
Financing Receivable, Originated Four Years before Latest Fiscal Year		1,852	1,363
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		2,969	2,191
Financing Receivable, Revolving		9,047	11,308
Special Mention [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		320	351
Financing Receivable, Originated in Current Fiscal Year		17	82
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		80	104
Financing Receivable, Originated Two Years before Latest Fiscal Year		46	127
Financing Receivable, Originated Three Years before Latest Fiscal Year		133	12
Financing Receivable, Originated Four Years before Latest Fiscal Year		2	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		11	2
Financing Receivable, Revolving		31	24
Substandard [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		432	366
Financing Receivable, Originated in Current Fiscal Year		23	29
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		30	80
Financing Receivable, Originated Two Years before Latest Fiscal Year		130	17
Financing Receivable, Originated Three Years before Latest Fiscal Year		43	140
Financing Receivable, Originated Four Years before Latest Fiscal Year		150	64
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		48	23
Financing Receivable, Revolving		8	13
Warehouse lending [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		4,788	5,561
Financing Receivable, Originated in Current Fiscal Year		555	440
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		566	41
Financing Receivable, Originated Two Years before Latest Fiscal Year		53	152
Financing Receivable, Originated Three Years before Latest Fiscal Year		156	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		3,458	4,928
Warehouse lending [Member] | Pass [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		4,788	5,518
Financing Receivable, Originated in Current Fiscal Year		555	397
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		566	41
Financing Receivable, Originated Two Years before Latest Fiscal Year		53	152
Financing Receivable, Originated Three Years before Latest Fiscal Year		156	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		3,458	4,928
Warehouse lending [Member] | Special Mention [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0	43
Financing Receivable, Originated in Current Fiscal Year		0	43
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Warehouse lending [Member] | Substandard [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0	0
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Municipal and nonprofit [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		1,543	1,524
Financing Receivable, Originated in Current Fiscal Year		2	107
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		121	185
Financing Receivable, Originated Two Years before Latest Fiscal Year		196	187
Financing Receivable, Originated Three Years before Latest Fiscal Year		187	78
Financing Receivable, Originated Four Years before Latest Fiscal Year		77	43
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		960	924
Financing Receivable, Revolving		0	0
Municipal and nonprofit [Member] | Pass [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		1,523	1,517
Financing Receivable, Originated in Current Fiscal Year		2	107
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		114	185
Financing Receivable, Originated Two Years before Latest Fiscal Year		196	187
Financing Receivable, Originated Three Years before Latest Fiscal Year		187	78
Financing Receivable, Originated Four Years before Latest Fiscal Year		71	43
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		953	917
Financing Receivable, Revolving		0	0
Municipal and nonprofit [Member] | Special Mention [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		7	0
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		7	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Municipal and nonprofit [Member] | Substandard [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		13	7
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		6	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		7	7
Financing Receivable, Revolving		0	0
Tech & Innovation [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		2,471	2,293
Financing Receivable, Originated in Current Fiscal Year		134	851
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		844	408
Financing Receivable, Originated Two Years before Latest Fiscal Year		348	90
Financing Receivable, Originated Three Years before Latest Fiscal Year		94	66
Financing Receivable, Originated Four Years before Latest Fiscal Year		56	4
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		5	1
Financing Receivable, Revolving		990	873
Tech & Innovation [Member] | Pass [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		2,387	2,198
Financing Receivable, Originated in Current Fiscal Year		127	813
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		812	374
Financing Receivable, Originated Two Years before Latest Fiscal Year		324	87
Financing Receivable, Originated Three Years before Latest Fiscal Year		85	66
Financing Receivable, Originated Four Years before Latest Fiscal Year		56	4
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		5	1
Financing Receivable, Revolving		978	853
Tech & Innovation [Member] | Special Mention [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		54	81
Financing Receivable, Originated in Current Fiscal Year		3	36
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		27	22
Financing Receivable, Originated Two Years before Latest Fiscal Year		8	3
Financing Receivable, Originated Three Years before Latest Fiscal Year		6	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		10	20
Tech & Innovation [Member] | Substandard [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		30	14
Financing Receivable, Originated in Current Fiscal Year		4	2
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		5	12
Financing Receivable, Originated Two Years before Latest Fiscal Year		16	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		3	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		2	0
Equity fund resources
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		971	3,717
Financing Receivable, Originated in Current Fiscal Year		93	1,020
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		105	1,189
Financing Receivable, Originated Two Years before Latest Fiscal Year		133	191
Financing Receivable, Originated Three Years before Latest Fiscal Year		11	16
Financing Receivable, Originated Four Years before Latest Fiscal Year		12	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		3	0
Financing Receivable, Revolving		614	1,301
Equity fund resources | Pass [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		971	3,717
Financing Receivable, Originated in Current Fiscal Year		93	1,020
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		105	1,189
Financing Receivable, Originated Two Years before Latest Fiscal Year		133	191
Financing Receivable, Originated Three Years before Latest Fiscal Year		11	16
Financing Receivable, Originated Four Years before Latest Fiscal Year		12	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		3	0
Financing Receivable, Revolving		614	1,301
Equity fund resources | Special Mention [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0	0
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Equity fund resources | Substandard [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0	0
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Other commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		5,912	7,793
Financing Receivable, Originated in Current Fiscal Year		534	2,971
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		1,776	1,337
Financing Receivable, Originated Two Years before Latest Fiscal Year		614	272
Financing Receivable, Originated Three Years before Latest Fiscal Year		244	280
Financing Receivable, Originated Four Years before Latest Fiscal Year		160	315
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		284	207
Financing Receivable, Revolving		2,300	2,411
Other commercial and industrial [Member] | Pass [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		5,848	7,703
Financing Receivable, Originated in Current Fiscal Year		520	2,968
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		1,773	1,272
Financing Receivable, Originated Two Years before Latest Fiscal Year		579	262
Financing Receivable, Originated Three Years before Latest Fiscal Year		237	277
Financing Receivable, Originated Four Years before Latest Fiscal Year		158	312
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		281	206
Financing Receivable, Revolving		2,300	2,406
Other commercial and industrial [Member] | Special Mention [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		15	47
Financing Receivable, Originated in Current Fiscal Year		14	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		1	44
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	3
Other commercial and industrial [Member] | Substandard [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		49	43
Financing Receivable, Originated in Current Fiscal Year		0	3
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		2	21
Financing Receivable, Originated Two Years before Latest Fiscal Year		35	10
Financing Receivable, Originated Three Years before Latest Fiscal Year		7	3
Financing Receivable, Originated Four Years before Latest Fiscal Year		2	3
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		3	1
Financing Receivable, Revolving		0	2
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		1,645	1,656
Financing Receivable, Originated in Current Fiscal Year		30	338
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		357	373
Financing Receivable, Originated Two Years before Latest Fiscal Year		364	181
Financing Receivable, Originated Three Years before Latest Fiscal Year		176	158
Financing Receivable, Originated Four Years before Latest Fiscal Year		151	216
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		536	350
Financing Receivable, Revolving		31	40
Commercial Real Estate Owner Occupied [Member] | Pass [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		1,604	1,607
Financing Receivable, Originated in Current Fiscal Year		30	338
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		357	359
Financing Receivable, Originated Two Years before Latest Fiscal Year		350	174
Financing Receivable, Originated Three Years before Latest Fiscal Year		169	157
Financing Receivable, Originated Four Years before Latest Fiscal Year		146	211
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		527	339
Financing Receivable, Revolving		25	29
Commercial Real Estate Owner Occupied [Member] | Special Mention [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		1	1
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		1	1
Financing Receivable, Revolving		0	0
Commercial Real Estate Owner Occupied [Member] | Substandard [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		40	48
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	14
Financing Receivable, Originated Two Years before Latest Fiscal Year		14	7
Financing Receivable, Originated Three Years before Latest Fiscal Year		7	1
Financing Receivable, Originated Four Years before Latest Fiscal Year		5	5
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		8	10
Financing Receivable, Revolving		6	11
Hotel franchise finance [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		3,900	3,807
Financing Receivable, Originated in Current Fiscal Year		364	1,780
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		1,705	746
Financing Receivable, Originated Two Years before Latest Fiscal Year		680	80
Financing Receivable, Originated Three Years before Latest Fiscal Year		79	645
Financing Receivable, Originated Four Years before Latest Fiscal Year		641	335
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		313	103
Financing Receivable, Revolving		118	118
Hotel franchise finance [Member] | Pass [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		3,680	3,581
Financing Receivable, Originated in Current Fiscal Year		345	1,762
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		1,696	726
Financing Receivable, Originated Two Years before Latest Fiscal Year		660	54
Financing Receivable, Originated Three Years before Latest Fiscal Year		53	528
Financing Receivable, Originated Four Years before Latest Fiscal Year		527	290
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		281	103
Financing Receivable, Revolving		118	118
Hotel franchise finance [Member] | Special Mention [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		8	26
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	26
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		8	0
Financing Receivable, Revolving		0	0
Hotel franchise finance [Member] | Substandard [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		212	200
Financing Receivable, Originated in Current Fiscal Year		19	18
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		9	20
Financing Receivable, Originated Two Years before Latest Fiscal Year		20	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		26	117
Financing Receivable, Originated Four Years before Latest Fiscal Year		114	45
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		24	0
Financing Receivable, Revolving		0	0
Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		5,650	5,457
Financing Receivable, Originated in Current Fiscal Year		429	2,347
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		2,384	1,243
Financing Receivable, Originated Two Years before Latest Fiscal Year		1,136	870
Financing Receivable, Originated Three Years before Latest Fiscal Year		899	288
Financing Receivable, Originated Four Years before Latest Fiscal Year		282	170
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		300	223
Financing Receivable, Revolving		220	316
Other Commercial Real Estate Non owner Occupied [Member] | Pass [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		5,485	5,372
Financing Receivable, Originated in Current Fiscal Year		429	2,344
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		2,339	1,201
Financing Receivable, Originated Two Years before Latest Fiscal Year		1,093	870
Financing Receivable, Originated Three Years before Latest Fiscal Year		871	264
Financing Receivable, Originated Four Years before Latest Fiscal Year		260	160
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		294	218
Financing Receivable, Revolving		199	315
Other Commercial Real Estate Non owner Occupied [Member] | Special Mention [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		135	54
Financing Receivable, Originated in Current Fiscal Year		0	3
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		45	38
Financing Receivable, Originated Two Years before Latest Fiscal Year		38	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		28	12
Financing Receivable, Originated Four Years before Latest Fiscal Year		2	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		1	0
Financing Receivable, Revolving		21	1
Other Commercial Real Estate Non owner Occupied [Member] | Substandard [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		30	31
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	4
Financing Receivable, Originated Two Years before Latest Fiscal Year		5	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	12
Financing Receivable, Originated Four Years before Latest Fiscal Year		20	10
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		5	5
Financing Receivable, Revolving		0	0
Residential Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		13,435	13,996
Financing Receivable, Originated in Current Fiscal Year		81	4,047
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		3,657	8,483
Financing Receivable, Originated Two Years before Latest Fiscal Year		8,324	878
Financing Receivable, Originated Three Years before Latest Fiscal Year		837	311
Financing Receivable, Originated Four Years before Latest Fiscal Year		285	151
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		222	90
Financing Receivable, Revolving		29	36
Residential Real Estate [Member] | Pass [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		13,407	13,977
Financing Receivable, Originated in Current Fiscal Year		81	4,041
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		3,645	8,474
Financing Receivable, Originated Two Years before Latest Fiscal Year		8,312	878
Financing Receivable, Originated Three Years before Latest Fiscal Year		837	308
Financing Receivable, Originated Four Years before Latest Fiscal Year		282	150
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		221	90
Financing Receivable, Revolving		29	36
Residential Real Estate [Member] | Special Mention [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0	0
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Residential Real Estate [Member] | Substandard [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		28	19
Financing Receivable, Originated in Current Fiscal Year		0	6
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		12	9
Financing Receivable, Originated Two Years before Latest Fiscal Year		12	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	3
Financing Receivable, Originated Four Years before Latest Fiscal Year		3	1
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		1	0
Financing Receivable, Revolving		0	0
Residential - EBO
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 1,884	1,538	1,884
Financing Receivable, Originated in Current Fiscal Year	3	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	268	3
Financing Receivable, Originated Two Years before Latest Fiscal Year	712	252
Financing Receivable, Originated Three Years before Latest Fiscal Year	454	618
Financing Receivable, Originated Four Years before Latest Fiscal Year	191	329
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	256	336
Financing Receivable, Revolving	0	0
Residential - EBO | Pass [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,884	1,538
Financing Receivable, Originated in Current Fiscal Year	3	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	268	3
Financing Receivable, Originated Two Years before Latest Fiscal Year	712	252
Financing Receivable, Originated Three Years before Latest Fiscal Year	454	618
Financing Receivable, Originated Four Years before Latest Fiscal Year	191	329
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	256	336
Financing Receivable, Revolving	0	0
Residential - EBO | Special Mention [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income	0	0
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Residential - EBO | Substandard [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income	0	0
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, Revolving	$ 0	0
Construction And Land Development Land [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		4,388	3,995
Financing Receivable, Originated in Current Fiscal Year		339	1,533
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		1,655	815
Financing Receivable, Originated Two Years before Latest Fiscal Year		783	371
Financing Receivable, Originated Three Years before Latest Fiscal Year		348	18
Financing Receivable, Originated Four Years before Latest Fiscal Year		6	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		2	0
Financing Receivable, Revolving		1,255	1,258
Construction And Land Development Land [Member] | Pass [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		4,259	3,893
Financing Receivable, Originated in Current Fiscal Year		339	1,533
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		1,653	815
Financing Receivable, Originated Two Years before Latest Fiscal Year		755	273
Financing Receivable, Originated Three Years before Latest Fiscal Year		249	14
Financing Receivable, Originated Four Years before Latest Fiscal Year		6	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		2	0
Financing Receivable, Revolving		1,255	1,258
Construction And Land Development Land [Member] | Special Mention [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		99	98
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	98
Financing Receivable, Originated Three Years before Latest Fiscal Year		99	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Construction And Land Development Land [Member] | Substandard [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		30	4
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		2	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		28	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	4
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Construction And Land Development [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		4,388	3,995
Other, loan segment
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		194	179
Financing Receivable, Originated in Current Fiscal Year		10	23
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		18	10
Financing Receivable, Originated Two Years before Latest Fiscal Year		9	13
Financing Receivable, Originated Three Years before Latest Fiscal Year		14	5
Financing Receivable, Originated Four Years before Latest Fiscal Year		5	2
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		67	62
Financing Receivable, Revolving		71	64
Other, loan segment | Pass [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		193	178
Financing Receivable, Originated in Current Fiscal Year		10	23
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		18	10
Financing Receivable, Originated Two Years before Latest Fiscal Year		9	13
Financing Receivable, Originated Three Years before Latest Fiscal Year		14	5
Financing Receivable, Originated Four Years before Latest Fiscal Year		5	2
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		66	61
Financing Receivable, Revolving		71	64
Other, loan segment | Special Mention [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		1	1
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		1	1
Financing Receivable, Revolving		0	0
Other, loan segment | Substandard [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0	0
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		230	283
Financial Asset, 30 to 59 Days Past Due [Member] | Warehouse lending [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, 30 to 59 Days Past Due [Member] | Municipal and nonprofit [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		20	0
Financial Asset, 30 to 59 Days Past Due [Member] | Tech & Innovation [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	23
Financial Asset, 30 to 59 Days Past Due [Member] | Equity fund resources
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, 30 to 59 Days Past Due [Member] | Other commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	2
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, 30 to 59 Days Past Due [Member] | Hotel franchise finance [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, 30 to 59 Days Past Due [Member] | Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	3
Financial Asset, 30 to 59 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		32	37
Financial Asset, 30 to 59 Days Past Due [Member] | Residential - EBO
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		178	217
Financial Asset, 30 to 59 Days Past Due [Member] | Construction And Land Development [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, 30 to 59 Days Past Due [Member] | Other, loan segment
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	1
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		113	120
Financial Asset, 60 to 89 Days Past Due [Member] | Warehouse lending [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Municipal and nonprofit [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Tech & Innovation [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Equity fund resources
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Other commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Hotel franchise finance [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		5	4
Financial Asset, 60 to 89 Days Past Due [Member] | Residential - EBO
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		108	116
Financial Asset, 60 to 89 Days Past Due [Member] | Construction And Land Development [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Other, loan segment
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing		536	582
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Warehouse lending [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing		0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Municipal and nonprofit [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing		0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Tech & Innovation [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing		0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Equity fund resources
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing		0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Other commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing		0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing		0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Hotel franchise finance [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing		0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing		0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing		4	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Residential - EBO
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing		532	582
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction And Land Development [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing		0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Other, loan segment
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing		0	0
Financial Asset, Not Past Due
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		45,556	50,877
Financial Asset, Not Past Due | Warehouse lending [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		4,788	5,561
Financial Asset, Not Past Due | Municipal and nonprofit [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		1,523	1,524
Financial Asset, Not Past Due | Tech & Innovation [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		2,471	2,270
Financial Asset, Not Past Due | Equity fund resources
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		971	3,717
Financial Asset, Not Past Due | Other commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		5,912	7,791
Financial Asset, Not Past Due | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		1,645	1,656
Financial Asset, Not Past Due | Hotel franchise finance [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		3,900	3,807
Financial Asset, Not Past Due | Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		5,650	5,454
Financial Asset, Not Past Due | Residential Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		13,394	13,955
Financial Asset, Not Past Due | Residential - EBO
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		720	969
Financial Asset, Not Past Due | Construction And Land Development [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		4,388	3,995
Financial Asset, Not Past Due | Other, loan segment
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		194	178
Financial Asset, Past Due
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		879	985
Financial Asset, Past Due | Warehouse lending [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, Past Due | Municipal and nonprofit [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		20	0
Financial Asset, Past Due | Tech & Innovation [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	23
Financial Asset, Past Due | Equity fund resources
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, Past Due | Other commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	2
Financial Asset, Past Due | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, Past Due | Hotel franchise finance [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, Past Due | Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	3
Financial Asset, Past Due | Residential Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		41	41
Financial Asset, Past Due | Residential - EBO
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		818	915
Financial Asset, Past Due | Construction And Land Development [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		0	0
Financial Asset, Past Due | Other, loan segment
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, before Allowance for Credit Loss		$ 0	$ 1

Loans, Leases and Allowance f_4

Loans, Leases and Allowance for Credit Losses - Loans by Risk Rating (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		$ 2,571	$ 15,460
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		13,191	15,098
Financing Receivable, Originated Two Years before Latest Fiscal Year		12,892	3,997
Financing Receivable, Originated Three Years before Latest Fiscal Year		3,663	2,319
Financing Receivable, Originated Four Years before Latest Fiscal Year		2,004	1,427
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		3,028	2,216
Financing Receivable, Revolving		9,086	11,345
Loans and Leases Receivable, Net of Deferred Income		46,435	51,862
Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		2,531	15,349
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		13,081	14,914
Financing Receivable, Originated Two Years before Latest Fiscal Year		12,716	3,853
Financing Receivable, Originated Three Years before Latest Fiscal Year		3,487	2,167
Financing Receivable, Originated Four Years before Latest Fiscal Year		1,852	1,363
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		2,969	2,191
Financing Receivable, Revolving		9,047	11,308
Loans and Leases Receivable, Net of Deferred Income		45,683	51,145
Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		17	82
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		80	104
Financing Receivable, Originated Two Years before Latest Fiscal Year		46	127
Financing Receivable, Originated Three Years before Latest Fiscal Year		133	12
Financing Receivable, Originated Four Years before Latest Fiscal Year		2	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		11	2
Financing Receivable, Revolving		31	24
Loans and Leases Receivable, Net of Deferred Income		320	351
Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		23	29
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		30	80
Financing Receivable, Originated Two Years before Latest Fiscal Year		130	17
Financing Receivable, Originated Three Years before Latest Fiscal Year		43	140
Financing Receivable, Originated Four Years before Latest Fiscal Year		150	64
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		48	23
Financing Receivable, Revolving		8	13
Loans and Leases Receivable, Net of Deferred Income		432	366
Warehouse lending [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		555	440
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		566	41
Financing Receivable, Originated Two Years before Latest Fiscal Year		53	152
Financing Receivable, Originated Three Years before Latest Fiscal Year		156	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		3,458	4,928
Loans and Leases Receivable, Net of Deferred Income		4,788	5,561
Warehouse lending [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		555	397
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		566	41
Financing Receivable, Originated Two Years before Latest Fiscal Year		53	152
Financing Receivable, Originated Three Years before Latest Fiscal Year		156	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		3,458	4,928
Loans and Leases Receivable, Net of Deferred Income		4,788	5,518
Warehouse lending [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	43
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		0	43
Warehouse lending [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		0	0
Municipal and nonprofit [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		2	107
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		121	185
Financing Receivable, Originated Two Years before Latest Fiscal Year		196	187
Financing Receivable, Originated Three Years before Latest Fiscal Year		187	78
Financing Receivable, Originated Four Years before Latest Fiscal Year		77	43
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		960	924
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		1,543	1,524
Municipal and nonprofit [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		2	107
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		114	185
Financing Receivable, Originated Two Years before Latest Fiscal Year		196	187
Financing Receivable, Originated Three Years before Latest Fiscal Year		187	78
Financing Receivable, Originated Four Years before Latest Fiscal Year		71	43
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		953	917
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		1,523	1,517
Municipal and nonprofit [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		7	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		7	0
Municipal and nonprofit [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		6	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		7	7
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		13	7
Tech & Innovation [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		134	851
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		844	408
Financing Receivable, Originated Two Years before Latest Fiscal Year		348	90
Financing Receivable, Originated Three Years before Latest Fiscal Year		94	66
Financing Receivable, Originated Four Years before Latest Fiscal Year		56	4
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		5	1
Financing Receivable, Revolving		990	873
Loans and Leases Receivable, Net of Deferred Income		2,471	2,293
Loans and Leases Receivable, Net of Deferred Income, Writeoff		2
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff		2
Tech & Innovation [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		127	813
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		812	374
Financing Receivable, Originated Two Years before Latest Fiscal Year		324	87
Financing Receivable, Originated Three Years before Latest Fiscal Year		85	66
Financing Receivable, Originated Four Years before Latest Fiscal Year		56	4
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		5	1
Financing Receivable, Revolving		978	853
Loans and Leases Receivable, Net of Deferred Income		2,387	2,198
Tech & Innovation [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		3	36
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		27	22
Financing Receivable, Originated Two Years before Latest Fiscal Year		8	3
Financing Receivable, Originated Three Years before Latest Fiscal Year		6	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		10	20
Loans and Leases Receivable, Net of Deferred Income		54	81
Tech & Innovation [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		4	2
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		5	12
Financing Receivable, Originated Two Years before Latest Fiscal Year		16	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		3	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		2	0
Loans and Leases Receivable, Net of Deferred Income		30	14
Equity fund resources
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		93	1,020
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		105	1,189
Financing Receivable, Originated Two Years before Latest Fiscal Year		133	191
Financing Receivable, Originated Three Years before Latest Fiscal Year		11	16
Financing Receivable, Originated Four Years before Latest Fiscal Year		12	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		3	0
Financing Receivable, Revolving		614	1,301
Loans and Leases Receivable, Net of Deferred Income		971	3,717
Equity fund resources | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		93	1,020
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		105	1,189
Financing Receivable, Originated Two Years before Latest Fiscal Year		133	191
Financing Receivable, Originated Three Years before Latest Fiscal Year		11	16
Financing Receivable, Originated Four Years before Latest Fiscal Year		12	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		3	0
Financing Receivable, Revolving		614	1,301
Loans and Leases Receivable, Net of Deferred Income		971	3,717
Equity fund resources | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		0	0
Equity fund resources | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		0	0
Other commercial and industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		534	2,971
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		1,776	1,337
Financing Receivable, Originated Two Years before Latest Fiscal Year		614	272
Financing Receivable, Originated Three Years before Latest Fiscal Year		244	280
Financing Receivable, Originated Four Years before Latest Fiscal Year		160	315
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		284	207
Financing Receivable, Revolving		2,300	2,411
Loans and Leases Receivable, Net of Deferred Income		5,912	7,793
Loans and Leases Receivable, Net of Deferred Income, Writeoff		7
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff		1
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff		6
Other commercial and industrial [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		520	2,968
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		1,773	1,272
Financing Receivable, Originated Two Years before Latest Fiscal Year		579	262
Financing Receivable, Originated Three Years before Latest Fiscal Year		237	277
Financing Receivable, Originated Four Years before Latest Fiscal Year		158	312
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		281	206
Financing Receivable, Revolving		2,300	2,406
Loans and Leases Receivable, Net of Deferred Income		5,848	7,703
Other commercial and industrial [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		14	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		1	44
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	3
Loans and Leases Receivable, Net of Deferred Income		15	47
Other commercial and industrial [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	3
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		2	21
Financing Receivable, Originated Two Years before Latest Fiscal Year		35	10
Financing Receivable, Originated Three Years before Latest Fiscal Year		7	3
Financing Receivable, Originated Four Years before Latest Fiscal Year		2	3
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		3	1
Financing Receivable, Revolving		0	2
Loans and Leases Receivable, Net of Deferred Income		49	43
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		30	338
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		357	373
Financing Receivable, Originated Two Years before Latest Fiscal Year		364	181
Financing Receivable, Originated Three Years before Latest Fiscal Year		176	158
Financing Receivable, Originated Four Years before Latest Fiscal Year		151	216
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		536	350
Financing Receivable, Revolving		31	40
Loans and Leases Receivable, Net of Deferred Income		1,645	1,656
Commercial Real Estate Owner Occupied [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		30	338
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		357	359
Financing Receivable, Originated Two Years before Latest Fiscal Year		350	174
Financing Receivable, Originated Three Years before Latest Fiscal Year		169	157
Financing Receivable, Originated Four Years before Latest Fiscal Year		146	211
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		527	339
Financing Receivable, Revolving		25	29
Loans and Leases Receivable, Net of Deferred Income		1,604	1,607
Commercial Real Estate Owner Occupied [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		1	1
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		1	1
Commercial Real Estate Owner Occupied [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	14
Financing Receivable, Originated Two Years before Latest Fiscal Year		14	7
Financing Receivable, Originated Three Years before Latest Fiscal Year		7	1
Financing Receivable, Originated Four Years before Latest Fiscal Year		5	5
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		8	10
Financing Receivable, Revolving		6	11
Loans and Leases Receivable, Net of Deferred Income		40	48
Hotel franchise finance [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		364	1,780
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		1,705	746
Financing Receivable, Originated Two Years before Latest Fiscal Year		680	80
Financing Receivable, Originated Three Years before Latest Fiscal Year		79	645
Financing Receivable, Originated Four Years before Latest Fiscal Year		641	335
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		313	103
Financing Receivable, Revolving		118	118
Loans and Leases Receivable, Net of Deferred Income		3,900	3,807
Hotel franchise finance [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		345	1,762
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		1,696	726
Financing Receivable, Originated Two Years before Latest Fiscal Year		660	54
Financing Receivable, Originated Three Years before Latest Fiscal Year		53	528
Financing Receivable, Originated Four Years before Latest Fiscal Year		527	290
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		281	103
Financing Receivable, Revolving		118	118
Loans and Leases Receivable, Net of Deferred Income		3,680	3,581
Hotel franchise finance [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	26
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		8	0
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		8	26
Hotel franchise finance [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		19	18
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		9	20
Financing Receivable, Originated Two Years before Latest Fiscal Year		20	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		26	117
Financing Receivable, Originated Four Years before Latest Fiscal Year		114	45
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		24	0
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		212	200
Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		429	2,347
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		2,384	1,243
Financing Receivable, Originated Two Years before Latest Fiscal Year		1,136	870
Financing Receivable, Originated Three Years before Latest Fiscal Year		899	288
Financing Receivable, Originated Four Years before Latest Fiscal Year		282	170
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		300	223
Financing Receivable, Revolving		220	316
Loans and Leases Receivable, Net of Deferred Income		5,650	5,457
Other Commercial Real Estate Non owner Occupied [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		429	2,344
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		2,339	1,201
Financing Receivable, Originated Two Years before Latest Fiscal Year		1,093	870
Financing Receivable, Originated Three Years before Latest Fiscal Year		871	264
Financing Receivable, Originated Four Years before Latest Fiscal Year		260	160
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		294	218
Financing Receivable, Revolving		199	315
Loans and Leases Receivable, Net of Deferred Income		5,485	5,372
Other Commercial Real Estate Non owner Occupied [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	3
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		45	38
Financing Receivable, Originated Two Years before Latest Fiscal Year		38	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		28	12
Financing Receivable, Originated Four Years before Latest Fiscal Year		2	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		1	0
Financing Receivable, Revolving		21	1
Loans and Leases Receivable, Net of Deferred Income		135	54
Other Commercial Real Estate Non owner Occupied [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	4
Financing Receivable, Originated Two Years before Latest Fiscal Year		5	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	12
Financing Receivable, Originated Four Years before Latest Fiscal Year		20	10
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		5	5
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		30	31
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		81	4,047
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		3,657	8,483
Financing Receivable, Originated Two Years before Latest Fiscal Year		8,324	878
Financing Receivable, Originated Three Years before Latest Fiscal Year		837	311
Financing Receivable, Originated Four Years before Latest Fiscal Year		285	151
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		222	90
Financing Receivable, Revolving		29	36
Loans and Leases Receivable, Net of Deferred Income		13,435	13,996
Residential Real Estate [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		81	4,041
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		3,645	8,474
Financing Receivable, Originated Two Years before Latest Fiscal Year		8,312	878
Financing Receivable, Originated Three Years before Latest Fiscal Year		837	308
Financing Receivable, Originated Four Years before Latest Fiscal Year		282	150
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		221	90
Financing Receivable, Revolving		29	36
Loans and Leases Receivable, Net of Deferred Income		13,407	13,977
Residential Real Estate [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		0	0
Residential Real Estate [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	6
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		12	9
Financing Receivable, Originated Two Years before Latest Fiscal Year		12	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	3
Financing Receivable, Originated Four Years before Latest Fiscal Year		3	1
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		1	0
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		28	19
Residential - EBO
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	$ 3	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	268	3
Financing Receivable, Originated Two Years before Latest Fiscal Year	712	252
Financing Receivable, Originated Three Years before Latest Fiscal Year	454	618
Financing Receivable, Originated Four Years before Latest Fiscal Year	191	329
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	256	336
Financing Receivable, Revolving	0	0
Loans and Leases Receivable, Net of Deferred Income	1,884	1,538	1,884
Residential - EBO | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	3	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	268	3
Financing Receivable, Originated Two Years before Latest Fiscal Year	712	252
Financing Receivable, Originated Three Years before Latest Fiscal Year	454	618
Financing Receivable, Originated Four Years before Latest Fiscal Year	191	329
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	256	336
Financing Receivable, Revolving	0	0
Loans and Leases Receivable, Net of Deferred Income	1,884	1,538
Residential - EBO | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Loans and Leases Receivable, Net of Deferred Income	0	0
Residential - EBO | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Loans and Leases Receivable, Net of Deferred Income	$ 0	0
Construction And Land Development Land [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		339	1,533
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		1,655	815
Financing Receivable, Originated Two Years before Latest Fiscal Year		783	371
Financing Receivable, Originated Three Years before Latest Fiscal Year		348	18
Financing Receivable, Originated Four Years before Latest Fiscal Year		6	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		2	0
Financing Receivable, Revolving		1,255	1,258
Loans and Leases Receivable, Net of Deferred Income		4,388	3,995
Construction And Land Development Land [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		339	1,533
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		1,653	815
Financing Receivable, Originated Two Years before Latest Fiscal Year		755	273
Financing Receivable, Originated Three Years before Latest Fiscal Year		249	14
Financing Receivable, Originated Four Years before Latest Fiscal Year		6	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		2	0
Financing Receivable, Revolving		1,255	1,258
Loans and Leases Receivable, Net of Deferred Income		4,259	3,893
Construction And Land Development Land [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	98
Financing Receivable, Originated Three Years before Latest Fiscal Year		99	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		99	98
Construction And Land Development Land [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		2	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		28	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	4
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		30	4
Other, loan segment
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		10	23
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		18	10
Financing Receivable, Originated Two Years before Latest Fiscal Year		9	13
Financing Receivable, Originated Three Years before Latest Fiscal Year		14	5
Financing Receivable, Originated Four Years before Latest Fiscal Year		5	2
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		67	62
Financing Receivable, Revolving		71	64
Loans and Leases Receivable, Net of Deferred Income		194	179
Other, loan segment | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		10	23
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		18	10
Financing Receivable, Originated Two Years before Latest Fiscal Year		9	13
Financing Receivable, Originated Three Years before Latest Fiscal Year		14	5
Financing Receivable, Originated Four Years before Latest Fiscal Year		5	2
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		66	61
Financing Receivable, Revolving		71	64
Loans and Leases Receivable, Net of Deferred Income		193	178
Other, loan segment | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		1	1
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		1	1
Other, loan segment | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0	0
Financing Receivable, Revolving		0	0
Loans and Leases Receivable, Net of Deferred Income		$ 0	$ 0

Loans, Leases and Allowance f_5

Loans, Leases and Allowance for Credit Losses Loans, Leases and Allowance for Credit Losses - Troubled Debt Restructurings (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 SecurityLoan	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) SecurityLoan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | SecurityLoan	0
Financing Receivable, Troubled Debt Restructuring, Commitment to Lend			$ 0
Financing Receivable, Modifications, Number of Contracts | SecurityLoan	1
Reserves allocated to customers whose loan terms modified in troubled debt restructurings			$ 4
Financing Receivable, Modified		$ 26
Financing Receivable, Modified in Period, to Total Financing Receivables, Percentage		0.10%
Financing Receivable, Troubled Debt Restructured Loans, Number of Outstanding Contracts | SecurityLoan			7
Financing Receivable, Troubled Debt Restructuring			$ 14
Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified		$ 6
Payment Deferral and Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified		2
Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified		18
Tech & Innovation [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified		$ 7
Financing Receivable, Modified in Period, to Total Financing Receivables, Percentage		0.30%
Tech & Innovation [Member] | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified		$ 5
Tech & Innovation [Member] | Payment Deferral and Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified		2
Other commercial and industrial [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructured Loans, Number of Outstanding Contracts | SecurityLoan			4
Financing Receivable, Troubled Debt Restructuring			$ 2
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructured Loans, Number of Outstanding Contracts | SecurityLoan			1
Financing Receivable, Troubled Debt Restructuring			$ 1
Hotel franchise finance [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified		$ 18
Financing Receivable, Modified in Period, to Total Financing Receivables, Percentage		0.50%
Financing Receivable, Troubled Debt Restructured Loans, Number of Outstanding Contracts | SecurityLoan			1
Financing Receivable, Troubled Debt Restructuring			$ 10
Hotel franchise finance [Member] | Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified		$ 18
Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructured Loans, Number of Outstanding Contracts | SecurityLoan			1
Financing Receivable, Troubled Debt Restructuring			$ 1
Residential Real Estate [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified		$ 1
Financing Receivable, Modified in Period, to Total Financing Receivables, Percentage		0%
Residential Real Estate [Member] | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified		$ 1

Loans, Leases and Allowance f_6

Loans, Leases and Allowance for Credit Losses Loans, Leases and Allowance for Credit Losses - Collateral Dependent Loans (Details) - USD ($) $ in Millions	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Loans and Leases Receivable Disclosure [Line Items]
Loans collectively evaluated for impairment		$ 46,047	$ 51,526
Financing Receivable, Individually Evaluated for Impairment		388	336
Loans and Leases Receivable, Net of Deferred Income		46,435	51,862
Loans collectively evaluated for impairment		292.4	299
Total loans individually evaluated for impairment		12.3	10.7
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest		304.7	309.7	$ 257.6	$ 252.5
Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		278	302
Real Estate Collateral [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		261	259
Other Collateral [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		17	43
Warehouse lending [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans collectively evaluated for impairment		4,788	5,561
Financing Receivable, Individually Evaluated for Impairment		0	0
Loans and Leases Receivable, Net of Deferred Income		4,788	5,561
Loans collectively evaluated for impairment		6.6	8.4
Total loans individually evaluated for impairment		0	0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest		6.6	8.4	2.9	3
Municipal and nonprofit [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans collectively evaluated for impairment		1,536	1,517
Financing Receivable, Individually Evaluated for Impairment		7	7
Loans and Leases Receivable, Net of Deferred Income		1,543	1,524
Loans collectively evaluated for impairment		15.9	13.4
Total loans individually evaluated for impairment		2.5	2.5
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest		18.4	15.9	13.4	13.7
Municipal and nonprofit [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		7	7
Municipal and nonprofit [Member] | Real Estate Collateral [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0	0
Municipal and nonprofit [Member] | Other Collateral [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		7	7
Tech & Innovation [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans collectively evaluated for impairment		2,441	2,280
Financing Receivable, Individually Evaluated for Impairment		30	13
Loans and Leases Receivable, Net of Deferred Income		2,471	2,293
Loans collectively evaluated for impairment		33	30.3
Total loans individually evaluated for impairment		3.4	0.5
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest		36.4	30.8	28	25.7
Tech & Innovation [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0	6
Tech & Innovation [Member] | Real Estate Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0	0
Tech & Innovation [Member] | Other Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0	6
Equity fund resources
Loans and Leases Receivable Disclosure [Line Items]
Loans collectively evaluated for impairment		971	3,717
Financing Receivable, Individually Evaluated for Impairment		0	0
Loans and Leases Receivable, Net of Deferred Income		971	3,717
Loans collectively evaluated for impairment		3.3	6.4
Total loans individually evaluated for impairment		0	0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest		3.3	6.4	6.6	9.6
Other commercial and industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans collectively evaluated for impairment		5,866	7,754
Financing Receivable, Individually Evaluated for Impairment		46	39
Loans and Leases Receivable, Net of Deferred Income		5,912	7,793
Loans collectively evaluated for impairment		44.7	80.4
Total loans individually evaluated for impairment		6.4	5.5
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest		51.1	85.9	115.7	103.6
Other commercial and industrial [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		10	30
Other commercial and industrial [Member] | Real Estate Collateral [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0	0
Other commercial and industrial [Member] | Other Collateral [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		10	30
Commercial Real Estate Owner Occupied [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans collectively evaluated for impairment		1,608	1,612
Financing Receivable, Individually Evaluated for Impairment		37	44
Loans and Leases Receivable, Net of Deferred Income		1,645	1,656
Loans collectively evaluated for impairment		8.6	7.1
Total loans individually evaluated for impairment		0	0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest		8.6	7.1	8.1	10.6
Commercial Real Estate Owner Occupied [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		35	42
Commercial Real Estate Owner Occupied [Member] | Real Estate Collateral [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		35	42
Commercial Real Estate Owner Occupied [Member] | Other Collateral [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0	0
Hotel franchise finance [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans collectively evaluated for impairment		3,689	3,607
Financing Receivable, Individually Evaluated for Impairment		211	200
Loans and Leases Receivable, Net of Deferred Income		3,900	3,807
Loans collectively evaluated for impairment		47.7	44.7
Total loans individually evaluated for impairment		0	2.2
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest		47.7	46.9	30.6	41.5
Hotel franchise finance [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		169	186
Hotel franchise finance [Member] | Real Estate Collateral [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		169	186
Hotel franchise finance [Member] | Other Collateral [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0	0
Other Commercial Real Estate Non owner Occupied [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans collectively evaluated for impairment		5,623	5,428
Financing Receivable, Individually Evaluated for Impairment		27	29
Loans and Leases Receivable, Net of Deferred Income		5,650	5,457
Loans collectively evaluated for impairment		66.4	47.4
Total loans individually evaluated for impairment		0	0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest		66.4	47.4	15.3	16.9
Other Commercial Real Estate Non owner Occupied [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		27	27
Other Commercial Real Estate Non owner Occupied [Member] | Real Estate Collateral [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		27	27
Other Commercial Real Estate Non owner Occupied [Member] | Other Collateral [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0	0
Residential Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans collectively evaluated for impairment		13,435	13,996
Financing Receivable, Individually Evaluated for Impairment		0	0
Loans and Leases Receivable, Net of Deferred Income		13,435	13,996
Loans collectively evaluated for impairment		31.7	30.4
Total loans individually evaluated for impairment		0	0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest		31.7	30.4	23.8	12.5
Residential - EBO
Loans and Leases Receivable Disclosure [Line Items]
Loans collectively evaluated for impairment		1,538	1,884
Financing Receivable, Individually Evaluated for Impairment		0	0
Loans and Leases Receivable, Net of Deferred Income	$ 1,884	1,538	1,884
Loans collectively evaluated for impairment		0	0
Total loans individually evaluated for impairment		0	0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest		0	0
Construction And Land Development [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans collectively evaluated for impairment		4,358	3,991
Financing Receivable, Individually Evaluated for Impairment		30	4
Loans and Leases Receivable, Net of Deferred Income		4,388	3,995
Loans collectively evaluated for impairment		31.5	27.4
Total loans individually evaluated for impairment		0	0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest		31.5	27.4	10.7	12.5
Construction And Land Development [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		30	4
Construction And Land Development [Member] | Real Estate Collateral [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		30	4
Construction And Land Development [Member] | Other Collateral [Member] | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0	0
Other, loan segment
Loans and Leases Receivable Disclosure [Line Items]
Loans collectively evaluated for impairment		194	179
Financing Receivable, Individually Evaluated for Impairment		0	0
Loans and Leases Receivable, Net of Deferred Income		194	179
Loans collectively evaluated for impairment		3	3.1
Total loans individually evaluated for impairment		0	0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest		$ 3	$ 3.1	$ 2.5	$ 2.9

Loans, Leases and Allowance f_7

Loans, Leases and Allowance for Credit Losses - Allowances for Credit Losses (Detail) Valuation - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Valuation Allowance [Line Items]
Provision for Loan and Lease Losses	$ 1	$ 5.3
Financing Receivable, Collectively Evaluated for Impairment	46,047			$ 51,526
Financing Receivable, Individually Evaluated for Impairment	388			336
Loans and Leases Receivable, Net of Deferred Income	46,435			51,862
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	292.4			299
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	12.3			10.7
Off-Balance Sheet, Credit Loss, Liability	44.8	43.3		47	$ 37.6
Loans and Leases Receivable, Allowance	305			310
Interest Receivable	297			304
Off-Balance Sheet, Credit Loss, Liability, Change in Method, Credit Loss Expense (Reversal)	(2.2)	5.7
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	304.7	257.6		309.7	252.5
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	9.2	2.6
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	3.2	2.4
Warehouse lending [Member]
Valuation Allowance [Line Items]
Provision for Loan and Lease Losses	1.8	0.1
Financing Receivable, Collectively Evaluated for Impairment	4,788			5,561
Financing Receivable, Individually Evaluated for Impairment	0			0
Loans and Leases Receivable, Net of Deferred Income	4,788			5,561
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	6.6			8.4
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0			0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	6.6	2.9		8.4	3
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	0	0
Municipal and nonprofit [Member]
Valuation Allowance [Line Items]
Provision for Loan and Lease Losses	2.5	0.3
Financing Receivable, Collectively Evaluated for Impairment	1,536			1,517
Financing Receivable, Individually Evaluated for Impairment	7			7
Loans and Leases Receivable, Net of Deferred Income	1,543			1,524
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	15.9			13.4
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	2.5			2.5
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	18.4	13.4		15.9	13.7
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	0	0
Tech & Innovation [Member]
Valuation Allowance [Line Items]
Provision for Loan and Lease Losses	7.4	0.3
Financing Receivable, Collectively Evaluated for Impairment	2,441			2,280
Financing Receivable, Individually Evaluated for Impairment	30			13
Loans and Leases Receivable, Net of Deferred Income	2,471			2,293
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	33			30.3
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	3.4			0.5
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	36.4	28		30.8	25.7
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	1.8	0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	0	2
Equity fund resources
Valuation Allowance [Line Items]
Provision for Loan and Lease Losses	3.1	3
Financing Receivable, Collectively Evaluated for Impairment	971			3,717
Financing Receivable, Individually Evaluated for Impairment	0			0
Loans and Leases Receivable, Net of Deferred Income	971			3,717
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	3.3			6.4
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0			0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	3.3	6.6		6.4	9.6
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	0	0
Other commercial and industrial [Member]
Valuation Allowance [Line Items]
Provision for Loan and Lease Losses	30.7	14.3
Financing Receivable, Collectively Evaluated for Impairment	5,866			7,754
Financing Receivable, Individually Evaluated for Impairment	46			39
Loans and Leases Receivable, Net of Deferred Income	5,912			7,793
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	44.7			80.4
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	6.4			5.5
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	51.1	115.7		85.9	103.6
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	7.3	2.6
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	3.2	0.4
Commercial Real Estate Owner Occupied [Member]
Valuation Allowance [Line Items]
Provision for Loan and Lease Losses	1.5	2.5
Financing Receivable, Collectively Evaluated for Impairment	1,608			1,612
Financing Receivable, Individually Evaluated for Impairment	37			44
Loans and Leases Receivable, Net of Deferred Income	1,645			1,656
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	8.6			7.1
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0			0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	8.6	8.1		7.1	10.6
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	0	0
Hotel franchise finance [Member]
Valuation Allowance [Line Items]
Provision for Loan and Lease Losses	0.8	10.9
Financing Receivable, Collectively Evaluated for Impairment	3,689			3,607
Financing Receivable, Individually Evaluated for Impairment	211			200
Loans and Leases Receivable, Net of Deferred Income	3,900			3,807
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	47.7			44.7
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0			2.2
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	47.7	30.6		46.9	41.5
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	0	0
Other Commercial Real Estate Non owner Occupied [Member]
Valuation Allowance [Line Items]
Provision for Loan and Lease Losses	19	1.6
Financing Receivable, Collectively Evaluated for Impairment	5,623			5,428
Financing Receivable, Individually Evaluated for Impairment	27			29
Loans and Leases Receivable, Net of Deferred Income	5,650			5,457
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	66.4			47.4
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0			0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	66.4	15.3		47.4	16.9
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	0	0
Residential Real Estate [Member]
Valuation Allowance [Line Items]
Provision for Loan and Lease Losses	1.3	11.3
Financing Receivable, Collectively Evaluated for Impairment	13,435			13,996
Financing Receivable, Individually Evaluated for Impairment	0			0
Loans and Leases Receivable, Net of Deferred Income	13,435			13,996
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	31.7			30.4
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0			0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	31.7	23.8		30.4	12.5
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	0	0
Residential - EBO
Valuation Allowance [Line Items]
Provision for Loan and Lease Losses	0
Financing Receivable, Collectively Evaluated for Impairment	1,538			1,884
Financing Receivable, Individually Evaluated for Impairment	0			0
Loans and Leases Receivable, Net of Deferred Income	1,538		$ 1,884	1,884
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	0			0
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0			0
Interest Receivable	(8)			9
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	0			0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	0
Construction And Land Development [Member]
Valuation Allowance [Line Items]
Provision for Loan and Lease Losses	4.1	1.8
Financing Receivable, Collectively Evaluated for Impairment	4,358			3,991
Financing Receivable, Individually Evaluated for Impairment	30			4
Loans and Leases Receivable, Net of Deferred Income	4,388			3,995
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	31.5			27.4
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0			0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	31.5	10.7		27.4	12.5
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	0	0
Other, loan segment
Valuation Allowance [Line Items]
Provision for Loan and Lease Losses	0	0.4
Financing Receivable, Collectively Evaluated for Impairment	194			179
Financing Receivable, Individually Evaluated for Impairment	0			0
Loans and Leases Receivable, Net of Deferred Income	194			179
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	3			3.1
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0			0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	3	2.5		$ 3.1	$ 2.9
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0.1	0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery	$ 0	$ 0

Loans, Leases and Allowance f_8

Loans, Leases and Allowance for Credit Losses Loans, Leases and Allowance for Credit Losses - Loan Purchases and Sales (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Sale	$ 915
Gain (Loss) on Sale of Financing Receivable	(17.3)
Financing Receivable, Purchase
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Purchase	$ 511	$ 2,400

MSR Portfolio (Details)

MSR Portfolio (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Servicing Assets at Fair Value [Line Items]
Servicing Asset at Fair Value, Amount	$ 910	$ 950	$ 1,148	$ 698
Servicing Asset at Fair Value, Additions	142.4	204.1
Servicing Asset at Fair Value, Disposals	(350)	0
Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions	(8)	81
Servicing Asset at Fair Value, Other Changes that Affect Balance	3	0
Servicing Asset at Fair Value, Other Changes in Fair Value	(25)	(33)
MSR UPB of underlying loans	19,500
Continuing Involvement with Transferred Financial Assets, Principal Amount Outstanding	58,466	65,547
Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset	62.9	$ 42.9
MSR Loan Sales, Receivable	54		$ 39
Mortgage servicing asset
Servicing Assets at Fair Value [Line Items]
Servicing Asset at Fair Value, Other Changes in Fair Value	0
Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset	0
Servicing Contracts
Servicing Assets at Fair Value [Line Items]
Servicing Asset at Fair Value, Disposals	$ (350)

UPB in MSR Portfolio (Details)

UPB in MSR Portfolio (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Servicing Assets at Fair Value [Line Items]
Continuing Involvement with Transferred Financial Assets, Principal Amount Outstanding	$ 58,466		$ 65,547
Servicing advances, net	$ (87)	$ (102)

Hypothetical Change in FV (Deta

Hypothetical Change in FV (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Servicing Assets at Fair Value [Line Items]
Servicing Asset at Fair Value, Amount	$ 910	$ 1,148	$ 950	$ 698
Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 50 basis point Adverse Interest Rate Change	(52)
Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 50 basis point Favorable Interest Rate Change	48
Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 50 basis point Discount Rate Increase	(18)
Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 50 basis point Discount Rate Decrease	19
Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 1 Percent Adverse Change in Prepayment Speed	(22)
Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 1 Percent Adverse Change in Prepayment Speed	24
Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Increase Cost of Service	(13)
Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Decrease Cost of Service	$ 13

Net Loan Servicing Revenue (Det

Net Loan Servicing Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Servicing Assets at Fair Value [Line Items]
Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset	$ 62.9	$ 42.9
Servicing Asset at Fair Value, Other Changes in Fair Value	(25)	(33)
Unrealized Gain (Loss) on Derivatives	22.2	(81.2)
Expense Related to Distribution or Servicing and Underwriting Fees	13.8	$ 10.8
Servicing advances, net	87		$ 102
Mortgage servicing asset
Servicing Assets at Fair Value [Line Items]
Servicing Asset at Fair Value, Additions	0
Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset	0
Servicing Asset at Fair Value, Other Changes in Fair Value	0
Cash Flows Between Transferor and Transferee, Servicing Fees	0
Gain (Loss) on Disposition of Assets for Financial Service Operations	0
Unrealized Gain (Loss) on Derivatives	0
Derivative Instruments Not Designated as Hedging Instruments, Loss	0
Expense Related to Distribution or Servicing and Underwriting Fees	0
Contractually Specified Servicing Fees, Amount	$ 0

Other Borrowings - Additional I

Other Borrowings - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Debt [Line Items]
FHLB advances		$ 11,000	$ 4,300
Warehouse Agreement Borrowings		566	0
Other Short-term Borrowings		46	25
Short-term Debt		14,820	4,992
Senior Notes		314	315
Notes Payable		719	992
Long-term Debt		1,033	1,307
Other borrowings		15,853	6,299
Customer repurchase agreements		1,508	27
Federal Funds Purchased		400	640
BTFP advances
Debt [Line Items]
Other Short-term Borrowings		1,300	0
Securities Repurchase Agreements
Debt [Line Items]
Customer repurchase agreements		1,500	0
Customer Repurchase Agreements
Debt [Line Items]
Customer repurchase agreements		$ 8	$ 27
ATM Offering
Debt [Line Items]
Shares Issued, Price Per Share				$ 86.78
Grant year 2020 | Performance Shares [Member]
Debt [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number		157,784
Grant year 2019 | Performance Shares [Member]
Debt [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number			203,646
Senior Notes
Debt [Line Items]
Debt Instrument, Face Amount		$ 300
Debt Instrument, Interest Rate, Stated Percentage		6.50%
Credit Linked Notes Maturing July 2059
Debt [Line Items]
Debt Instrument, Face Amount		$ 199	$ 202
Debt Issuance Costs, Net		3	3
Credit Linked Notes Maturing April 2052
Debt [Line Items]
Debt Instrument, Face Amount		187	189
Debt Issuance Costs, Net		3	3
Credit Linked Notes Maturing June 2028
Debt [Line Items]
Debt Instrument, Face Amount			300
Debt Issuance Costs, Net		4	4
Credit Linked Notes Maturing December 2024
Debt [Line Items]
Debt Instrument, Face Amount			242
Debt Issuance Costs, Net			2
Credit Linked Notes Maturing October 2052
Debt [Line Items]
Debt Instrument, Face Amount		94	95
Debt Issuance Costs, Net		2	2
Federal Home Loan Bank Advances [Member]
Debt [Line Items]
Additional available credit with the entity		676	6,800
FRB [Member]
Debt [Line Items]
Additional available credit with the entity		16,600	$ 5,200
Federal Reserve Bank BTFP Advances
Debt [Line Items]
Additional available credit with the entity	$ 54
Unsecured Credit Facility [Member]
Debt [Line Items]
Secured borrowing credit line		1,100
Warehouse Agreement Borrowings
Debt [Line Items]
Additional available credit with the entity		$ 1,000

Qualifying Debt (Details)

Qualifying Debt (Details) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) Trust $ / shares	Mar. 31, 2022 $ / shares	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Common Stock, Dividends, Per Share, Cash Paid | $ / shares	$ 0.36	$ 0.35
Number of Statutory Business Trusts Formed or Acquired | Trust	8
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust	$ 77		$ 76
Subordinated Long-term Debt, Noncurrent	818		817
Subordinated Debt [Member] | Subordinated Debentures Maturing June 2030 [Member] [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 225		$ 225
Debt Instrument, Interest Rate, Stated Percentage	5.25%		5.25%
Debt Issuance Costs, Net	$ 1		$ 1
Subordinated Debt [Member] | Subordinated Debentures Maturing June 2031
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 600		$ 600
Debt Instrument, Interest Rate, Stated Percentage	3%		3%
Debt Issuance Costs, Net	$ 6		$ 7
Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	7.53%		7.11%

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends, Common Stock, Cash	$ 39.4	$ 37.3
Common Stock, Dividends, Per Share, Cash Paid	$ 0.36	$ 0.35
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	143,404	185,534
Treasury Stock Acquired, Average Cost Per Share	$ 74.70	$ 93.51
Stock Issued During Period, Shares, New Issues		1,300,000
Stock Issued During Period, Value, New Issues		$ 107.7
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs		0.7
Proceeds from Issuance of Common Stock	$ 0	$ 94.9
Preferred Stock, Dividends, Per Share, Cash Paid	$ 0.27	$ 0.27
Preferred Stock, Shares Outstanding	12,000,000		12,000,000
ATM Offering
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Issued, Price Per Share		$ 86.78
Stock Issued During Period, Value, New Issues		$ 108.4
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	$ (2.5)	2.8
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture	44.5	40
Share-based Payment Arrangement, Expense	8.5	7.1
Retained Earnings [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends, Common Stock, Cash	$ 39.4	$ 37.3
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury Stock, Shares, Acquired	100,000	200,000
Stock Issued During Period, Shares, New Issues		1,300,000
Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Shares Outstanding	12,000,000

Stockholders' Equity Common Sto

Stockholders' Equity Common Stock Repurchase (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs		$ 0.7
Common Stock, Dividends, Per Share, Cash Paid	$ 0.36	$ 0.35

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income - Summary of Changes in Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (661)	$ 15.7
Other comprehensive income before reclassifications	(59)	245.7
Amounts reclassified from accumulated other comprehensive income	(10.5)	5.1
Net other comprehensive income (loss)	(69.5)	250.8
Ending balance	(591.5)	(235.1)
Unrealized holding gains (losses) on AFS
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(663.7)	16.7
Other comprehensive income before reclassifications	(60.1)	247.9
Amounts reclassified from accumulated other comprehensive income	(9.3)	5.1
Net other comprehensive income (loss)	(69.4)	253
Ending balance	(594.3)	(236.3)
Accumulated Gain (Loss), Financial Liability, Fair Value Option, Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	3	(0.7)
Other comprehensive income before reclassifications	(1.1)	(2.2)
Amounts reclassified from accumulated other comprehensive income	0	0
Net other comprehensive income (loss)	(1.1)	(2.2)
Ending balance	1.9	1.5
Impairment loss on securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	0	0
Other comprehensive income before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive income	1.2	0
Net other comprehensive income (loss)	(1.2)	0
Ending balance	1.2	0
Supplemental Employee Retirement Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	0.3	(0.3)
Other comprehensive income before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive income	0	0
Net other comprehensive income (loss)	0	0
Ending balance	$ 0.3	$ (0.3)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income - Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amount reclassified from accumulated other comprehensive income	$ (3.2)	$ (1.8)
Amount reclassified from accumulated other comprehensive income	$ (9.3)	$ 5.1

Derivatives and Hedging Fair Va

Derivatives and Hedging Fair Value of Derivative Contracts (Detail) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value	$ 52	$ 36	$ 154
Derivative Liability, Fair Value	(43)	(21)	(158)
Derivative Asset, Not Subject to Master Netting Arrangement	25	15	8
Derivative Liability, Not Subject to Master Netting Arrangement	(21)	(19)	(20)
Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election	39	34	32
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	77	51	162
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	14	1	65
Derivative Liability, Subject to Master Netting Arrangement, Asset Offset	38	17	130
Derivative Liability, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election	26	23	48
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	64	40	178
Derivative Asset, Collateral, Obligation to Return Cash, Offset	5	(4)	0
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset	(38)	(17)	(130)
Derivative Asset, Subject to Master Netting Arrangement, after Offset	14	19	24
Derivative Liability, Subject to Master Netting Arrangement, after Offset	5	4	28
Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value	14	18	2
Derivative Liability, Fair Value	(1)	0	(23)
Derivative Asset, Not Subject to Master Netting Arrangement	5	6	0
Derivative Liability, Not Subject to Master Netting Arrangement	(6)	(6)	0
Derivative Netting Adjustments, Liabilities	0	0	0
Derivative Netting Adjustments, Assets	0	0	0
Derivative Asset, Subject to Master Netting Arrangement, after Offset	14	18	2
Derivative Liability, Subject to Master Netting Arrangement, after Offset	1	0	23
Foreign Exchange Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Not Subject to Master Netting Arrangement	2	1	0
Derivative Liability, Not Subject to Master Netting Arrangement	(1)	(9)	(2)
Interest Rate Lock Commitments
Derivatives, Fair Value [Line Items]
Derivative Asset, Not Subject to Master Netting Arrangement	14	5	6
Derivative Liability, Not Subject to Master Netting Arrangement	(1)	(3)	(18)
Forward purchase contracts
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value	30	1	3
Derivative Liability, Fair Value	(4)	(12)	(64)
Derivative Asset, Not Subject to Master Netting Arrangement	4	0	1
Derivative Liability, Not Subject to Master Netting Arrangement	(1)	(1)	0
Derivative Netting Adjustments, Liabilities	0	0	0
Derivative Netting Adjustments, Assets	0	0	0
Derivative Asset, Subject to Master Netting Arrangement, after Offset	30	1	3
Derivative Liability, Subject to Master Netting Arrangement, after Offset	4	12	64
Forward sales contracts
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value	3	13	149
Derivative Liability, Fair Value	(52)	(8)	(6)
Derivative Asset, Not Subject to Master Netting Arrangement	0	3	1
Derivative Liability, Not Subject to Master Netting Arrangement	(12)	0	0
Derivative Netting Adjustments, Liabilities	0	0	0
Derivative Netting Adjustments, Assets	0	0	0
Derivative Asset, Subject to Master Netting Arrangement, after Offset	3	13	149
Derivative Liability, Subject to Master Netting Arrangement, after Offset	52	8	6
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	307,850	321,581	439,646
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	77	39	90
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	58	29	160
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	1,983	1,538	64
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	6	6	0
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	5	6	0
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	189	250	151
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	1	9	2
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	2	1	1
Not Designated as Hedging Instrument [Member] | Interest Rate Lock Commitments
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	1,557	1,459	2,420
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	1	3	17
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	14	5	6
Not Designated as Hedging Instrument [Member] | Forward purchase contracts
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	7,814	2,709	5,019
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	5	13	65
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	34	1	4
Not Designated as Hedging Instrument [Member] | Forward sales contracts
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	9,702	4,985	9,557
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	64	8	6
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	3	16	149
Not Designated as Hedging Instrument [Member] | Futures purchase contracts
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	138,422	150,943	202,818
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	0	0	0
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	0	0	0
Not Designated as Hedging Instrument [Member] | Futures sales contracts
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	148,132	159,649	219,617
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	0	0	0
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	0	0	0
Not Designated as Hedging Instrument [Member] | Risk participation agreements
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	51	48	0
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	0	0	0
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	0	0	0
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value	14	18	2
Derivative Liability, Fair Value	(1)	0	(23)
Derivative, Notional Amount	470	476	499
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	470	476	499
Derivative Instruments in Hedges, Assets, at Fair Value	14	18	2
Fair Value Hedge Liabilities	$ 1	$ 0	$ 23

Derivatives and Hedging Pre-Tax

Derivatives and Hedging Pre-Tax Net Gains (Losses) on Fair Value Hedges (Detail) - Interest Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	$ (4.3)	$ 33.5
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	$ 4.3	$ (33.4)

Derivatives and Hedging Additio

Derivatives and Hedging Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Derivative [Line Items]
Hedged Asset, Fair Value Hedge		$ 447		$ 447
Fair Value Hedge Assets, Loans	[1]	13		17
Derivative Liability, Fair Value		43	$ 158	21
Derivative, Gain (Loss) on Derivative, Net		(24.6)	216.8
Net gain on loan origination and sale activities
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net		(24.6)	216.8
Loan servicing fees, net
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net		13.4	(56.9)
Interest Rate Lock Commitments | Net gain on loan origination and sale activities
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net		11.5	(20.8)
Forward Contracts | Net gain on loan origination and sale activities
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net		(36.8)	241.3
Forward Contracts | Loan servicing fees, net
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net		(1.6)	(34.9)
Future | Loan servicing fees, net
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net		(4)	(22)
Other Contract | Net gain on loan origination and sale activities
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net		(0.5)	(3.7)
Interest Rate Swap [Member]
Derivative [Line Items]
Derivative Liability, Fair Value		1	23	0
Interest Rate Swap [Member] | Net gain on loan origination and sale activities
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net		1.2	0
Interest Rate Swap [Member] | Loan servicing fees, net
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net		19	0
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Liability, Fair Value		$ 1	$ 23	$ 0
[1]Included in the carrying value of the hedged assets/(liabilities).

Earnings per Share (Details)

Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Basic	108.1	106
Weighted Average Number Diluted Shares Outstanding Adjustment	0.2	0.6
Diluted	108.3	106.6
Net income available to common shareholders	$ 139,000	$ 236,900
Earnings (loss) per share - basic	$ 1.29	$ 2.23
Earnings (loss) per share - diluted	$ 1.28	$ 2.22

Income Taxes Additional Informa

Income Taxes Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Operating Loss Carryforwards [Line Items]
Effective Income Tax Rate Reconciliation, Percent	23%	19.50%
Deferred Income Tax Assets, Net	$ 289,000		$ 311,000
Increase (Decrease) in Deferred Income Taxes	(22,000)
Investments in LIHTC and renewable energy	611,000		624,000
Investment-related Liabilities	393,000		398,000
Amortization of tax credit investments	11,300	$ 13,400
Deferred Tax Assets, Valuation Allowance	$ 0		$ 0

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Loss Contingencies [Line Items]
Letters of credit expiration period	1 year
Off-Balance Sheet, Credit Loss, Liability	$ 44.8	$ 43.3	$ 47	$ 37.6
Percentage Of Commercial Real Estate Loans Occupied By Owners	16%
Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Credit Concentration Risk [Member]
Loss Contingencies [Line Items]
Percent of commercial real estate related loans	34%	29%
Commercial and Industrial Sector [Member] | Loans Receivable [Member] | Credit Concentration Risk [Member]
Loss Contingencies [Line Items]
Percent of commercial real estate related loans	33%	40%
Unfunded Loan Commitment [Member]
Loss Contingencies [Line Items]
Loss Contingency Accrual	$ 45		$ 47

Commitments and Contingencies_2

Commitments and Contingencies - Summary of Contractual Amounts for Unfunded Commitments and Letters of Credit (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Other Commitments [Line Items]
Total amount	$ 18,579		$ 19,318
Percentage Of Commercial Real Estate Loans Occupied By Owners	16%
Commitments to extend credit [Member]
Other Commitments [Line Items]
Unsecured Loan Commitments	$ 1,254		1,209
Total amount	17,927		18,674
Credit card guarantees [Member]
Other Commitments [Line Items]
Total amount	392		379
Standby letters of credit [Member]
Other Commitments [Line Items]
Total amount	260		265
Unsecured Letters Of Credit	$ 9		$ 7
Commercial Real Estate Portfolio Segment [Member] | Credit Concentration Risk [Member] | Loans Receivable [Member]
Other Commitments [Line Items]
Concentration Risk, Percentage	34%	29%

Commitments and Contingencies L

Commitments and Contingencies Lease Commitments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Lease, Cost	$ 7.4	$ 5.9
Lessee, operating lease, other cost	1.3	1.1
Other Commitments [Line Items]
Lease, Cost	7.4	5.9
Lessee, operating lease, other cost	$ 1.3	$ 1.1

Fair Value Accounting - Gains a

Fair Value Accounting - Gains and Losses from Fair Value Changes Included in Consolidated Statement of Operations (Detail) $ in Millions		3 Months Ended
		Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Subordinated Debt Obligations, Fair Value Disclosure		$ 64		$ 63
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, after Tax		$ 1.1	$ 2.2
Junior Subordinated Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Measurement Input		0.0824		0.0813
Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss)		$ (1.5)	2.9
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)	[1]	$ (1.5)	$ (2.9)
Period of basis point spread		3.05%	3.36%
Percentage of LIBOR		5.19%	4.77%
[1]Unrealized gains/(losses) attributable to changes in the fair value of junior subordinated debt are recorded in OCI, net of tax, and totaled $(1.1) million and $2.2 million for three months ended March 31, 2023 and 2022, respectively.

Fair Value Accounting - Fair Va

Fair Value Accounting - Fair Value of Assets and Liabilities (Detail) $ in Millions		3 Months Ended
		Mar. 31, 2023 USD ($) percent		Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) percent		Dec. 31, 2021 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		$ 141	[1]		$ 160	[2]
Subordinated Debt Obligations, Fair Value Disclosure		64			63
Servicing Asset at Fair Value, Amount		$ 910		$ 950	$ 1,148		$ 698
Minimum | Recapture Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent		0.200			0.200
Minimum | Conditional Prepayment Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent		0.091			0.085
Maximum | Recapture Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent		0.200			0.200
Maximum | Conditional Prepayment Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent		0.210			0.185
Weighted Average | Recapture Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent		20			20
Weighted Average | Conditional Prepayment Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent		15.1			13.4
Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		$ 141			$ 160
Derivative Liability		64	[3]		40
Largest gross exposure (positive derivative NPV) to an individual counterparty		77	[3]		51
Loans Held-for-sale, Fair Value Disclosure		1,101			1,173
Servicing Asset at Fair Value, Amount		910			1,148
Fair Value, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		122			135
Subordinated Debt Obligations, Fair Value Disclosure		0			0
Derivative Liability		0	[3]		0
Largest gross exposure (positive derivative NPV) to an individual counterparty		0	[3]		0
Loans Held-for-sale, Fair Value Disclosure		0			0
Servicing Asset at Fair Value, Amount		0			0
Fair Value, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		19			25
Subordinated Debt Obligations, Fair Value Disclosure		0			0
Derivative Liability		63	[3]		37
Largest gross exposure (positive derivative NPV) to an individual counterparty		63	[3]		46
Loans Held-for-sale, Fair Value Disclosure		1,100			1,172
Servicing Asset at Fair Value, Amount		0			0
Fair Value, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		0			0
Subordinated Debt Obligations, Fair Value Disclosure		64			63
Derivative Liability		1	[3]		3
Largest gross exposure (positive derivative NPV) to an individual counterparty		14	[3]		5
Loans Held-for-sale, Fair Value Disclosure		1			1
Servicing Asset at Fair Value, Amount		910			1,148
Reported Value Measurement [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		141			160
Derivative Liability		64			40
Largest gross exposure (positive derivative NPV) to an individual counterparty		77			51
Estimate of Fair Value Measurement [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		141			160
Derivative Liability		64			40
Largest gross exposure (positive derivative NPV) to an individual counterparty		77			51
Estimate of Fair Value Measurement [Member] | Fair Value, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		122			135
Derivative Liability		0			0
Largest gross exposure (positive derivative NPV) to an individual counterparty		0			0
Estimate of Fair Value Measurement [Member] | Fair Value, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		19			25
Derivative Liability		63			37
Largest gross exposure (positive derivative NPV) to an individual counterparty		63			46
Estimate of Fair Value Measurement [Member] | Fair Value, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		0			0
Derivative Liability		1			3
Largest gross exposure (positive derivative NPV) to an individual counterparty		14			5
Junior Subordinated Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss)		(1.5)		2.9
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)	[4]	(1.5)		$ (2.9)
Junior Subordinated Debt [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Subordinated Debt Obligations, Fair Value Disclosure		$ 64			$ 63
[1]ratings differ, the Company uses an average of the available ratings by major credit agencies.[2]For rated securities, if ratings differ, the Company uses an average of the available ratings by major credit agencies.[3]See "Note 11. Derivatives and Hedging Activities." In addition, the carrying value of loans is decreased by $13 million as of March 31, 2023 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates.[4]Unrealized gains/(losses) attributable to changes in the fair value of junior subordinated debt are recorded in OCI, net of tax, and totaled $(1.1) million and $2.2 million for three months ended March 31, 2023 and 2022, respectively.

Fair Value Accounting - Change

Fair Value Accounting - Change in Level 3 Liabilities Measured at Fair Value on Recurring Basis (Detail) $ in Millions		3 Months Ended
		Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, after Tax		$ 1.1	$ 2.2
Junior subordinated debt		64		$ 63
Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3		(2)	(39)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value		1	8	1	$ 46
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases		2	292
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales		(4)	(351)
Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss)		0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3		0	(18)
Interest Rate Lock Commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3			0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value		14	(11)	2	9
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases		2,946	5,324
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances		(2,935)	(5,321)
Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss)		14	(11)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings		1	(23)
Servicing Contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3			0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value		910	950	1,148	$ 698
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases		142	204
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales		(350)	0
Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss)		(3)	80
Realization of expected cash flows		(25)	(33)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings		(8)	81
Fair Value, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Junior subordinated debt		64		$ 63
Junior Subordinated Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)	[1]	$ 1.5	2.9
Debt Instrument, Measurement Input		0.0824		0.0813
Junior Subordinated Debt [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Junior subordinated debt		$ 64		$ 63
Junior Subordinated Debt [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Beginning balance		62.5	67.4
Closing balance		$ 64	$ 64.5
[1]Unrealized gains/(losses) attributable to changes in the fair value of junior subordinated debt are recorded in OCI, net of tax, and totaled $(1.1) million and $2.2 million for three months ended March 31, 2023 and 2022, respectively.

Fair Value Accounting - Assets

Fair Value Accounting - Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Mar. 31, 2023	Jun. 30, 2022	Dec. 31, 2022
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans with an allowance recorded	$ 6		$ 7
Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets acquired through foreclosure	11		11
Collateral Dependent Loans, Net of Allowance	272		295
Fair Value, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets acquired through foreclosure	0		0
Collateral Dependent Loans, Net of Allowance	0		0
Fair Value, Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets acquired through foreclosure	0		0
Collateral Dependent Loans, Net of Allowance	0		0
Fair Value, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets acquired through foreclosure	11		11
Collateral Dependent Loans, Net of Allowance	$ 272		$ 295
Third Party Appraisal [Member] | Loans and Finance Receivables [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Level 3 Fair Value Measurement Inputs	Costs to sell	Costs to sell
Third Party Appraisal [Member] | Other Assets [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Level 3 Fair Value Measurement Inputs	Costs to sell	Costs to sell
Discount Rate [Member] | Loans and Finance Receivables [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Level 3 Fair Value Measurement Inputs	Contractual loan rate	Contractual loan rate
Scheduled Cash Collections [Member] | Loans and Finance Receivables [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Level 3 Fair Value Measurement Inputs	Probability of default	Probability of default
Proceeds from Non-Real Estate Collateral [Member] | Loans and Finance Receivables [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Level 3 Fair Value Measurement Inputs	Loss given default	Loss given default

Fair Value Accounting - Chang_2

Fair Value Accounting - Change in Level 3 Unobservable Inputs (Detail) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023 USD ($) percent	Mar. 31, 2022 USD ($)	Jun. 30, 2022	Dec. 31, 2022 USD ($) percent	Dec. 31, 2021 USD ($)
Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | $	$ 1	$ 8		$ 1	$ 46
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases | $	2	292
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales | $	(4)	(351)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | $	2	39
Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss) | $	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | $	0
Interest Rate Lock Commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | $	14	(11)		2	9
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases | $	2,946	5,324
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | $		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances | $	(2,935)	(5,321)
Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss) | $	14	(11)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | $	1	(23)
Servicing Contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | $	910	950		$ 1,148	$ 698
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases | $	142	204
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales | $	(350)	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 | $		0
Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss) | $	(3)	80
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | $	(8)	81
Realization of expected cash flows | $	$ (25)	$ (33)
Loans and Finance Receivables [Member] | Level 3 [Member] | Scheduled Cash Collections [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Level 3 Fair Value Measurement Inputs	Probability of default		Probability of default
Loans and Finance Receivables [Member] | Level 3 [Member] | Proceeds from Non-Real Estate Collateral [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Level 3 Fair Value Measurement Inputs	Loss given default		Loss given default
Option Adjusted Spread | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	438			621
Option Adjusted Spread | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	286			378
Option Adjusted Spread | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	20			190
Conditional Prepayment Rate | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	0.210			0.185
Conditional Prepayment Rate | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	15.1			13.4
Conditional Prepayment Rate | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	0.091			0.085
Servicing Fee Rate | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	56.5			56.5
Servicing Fee Rate | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	32.6			33.2
Servicing Fee Rate | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	25			25
Cost to Service | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	100			94
Cost to Service | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	95			90
Cost to Service | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	93			87
Servicing Fee Multiple | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Measurement Input	5.3			5.5
Servicing Fee Multiple | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Measurement Input	4.1			4.3
Servicing Fee Multiple | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Measurement Input	2.9			2.9
Pull-through Rate | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Measurement Input	1			1
Pull-through Rate | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Measurement Input	85			89
Pull-through Rate | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Measurement Input	0.66			0.69
Whole loan spread to TBA price in basis points | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Measurement Input				(0.6)
Whole loan spread to TBA price in basis points | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Measurement Input				(0.6)
Whole loan spread to TBA price in basis points | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Measurement Input				(0.6)
Recapture Rate | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	0.200			0.200
Recapture Rate | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	20			20
Recapture Rate | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	0.200			0.200

Fair Value Accounting - Estimat

Fair Value Accounting - Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Millions	Mar. 31, 2023		Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Repossessed Assets	$ 11		$ 11
Financial assets
Debt Securities, Held-to-maturity	1,325		1,289
Debt Securities, Available-for-sale	7,645	[1]	7,092	[2]
Investment securities - equity	141	[1]	160	[2]
Loans, net	46,130		51,552
Loans Receivable Held-for-sale, Amount	7,022		1,184
Servicing Asset	910		1,148
Accrued Investment Income Receivable	4
Financial liabilities
Deposits	47,587		53,644
Other borrowings	15,853		6,299
Junior subordinated debt	64		63
Fair Value, Nonrecurring [Member]
Financial liabilities
Other assets acquired through foreclosure	11		11
Fair Value, Nonrecurring [Member] | Level 1 [Member]
Financial liabilities
Other assets acquired through foreclosure	0		0
Fair Value, Nonrecurring [Member] | Level 2 [Member]
Financial liabilities
Other assets acquired through foreclosure	0		0
Fair Value, Nonrecurring [Member] | Level 3 [Member]
Financial liabilities
Other assets acquired through foreclosure	11		11
Fair Value, Nonrecurring [Member] | Reported Value Measurement [Member]
Financial assets
Debt Securities, Held-to-maturity	1,325		1,289
Loans, net	46,130		51,552
Accrued Investment Income Receivable	350		357
Financial liabilities
Deposits	47,587		53,644
Other borrowings	15,853		6,299
Junior subordinated debt	895		893
Interest Payable, Current	65		35
Fair Value, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member]
Financial assets
Debt Securities, Held-to-maturity	1,185		1,112
Loans, net	43,680		47,679
Accrued Investment Income Receivable	350		357
Financial liabilities
Deposits	47,584		53,698
Other borrowings	15,771		6,261
Junior subordinated debt	635		810
Interest Payable, Current	65		35
Fair Value, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member] | Level 1 [Member]
Financial assets
Debt Securities, Held-to-maturity	0		0
Loans, net	0		0
Accrued Investment Income Receivable	0		0
Financial liabilities
Deposits	0		0
Other borrowings	0		0
Junior subordinated debt	0		0
Interest Payable, Current	0		0
Fair Value, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member] | Level 2 [Member]
Financial assets
Debt Securities, Held-to-maturity	1,185		1,112
Loans, net	0		0
Accrued Investment Income Receivable	350		357
Financial liabilities
Deposits	47,584		53,698
Other borrowings	15,771		6,261
Junior subordinated debt	558		735
Interest Payable, Current	65		35
Fair Value, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member] | Level 3 [Member]
Financial assets
Debt Securities, Held-to-maturity	0		0
Loans, net	43,680		47,679
Accrued Investment Income Receivable	0		0
Financial liabilities
Deposits	0		0
Other borrowings	0		0
Junior subordinated debt	77		75
Interest Payable, Current	0		0
Fair Value, Recurring [Member]
Financial assets
Debt Securities, Available-for-sale	7,645		7,092
Investment securities - equity	141		160
Derivative Asset	77	[3]	51
Financial liabilities
Derivative Liability	64	[3]	40
Fair Value, Recurring [Member] | Level 1 [Member]
Financial assets
Debt Securities, Available-for-sale	927		24
Investment securities - equity	122		135
Derivative Asset	0	[3]	0
Financial liabilities
Junior subordinated debt	0		0
Derivative Liability	0	[3]	0
Fair Value, Recurring [Member] | Level 2 [Member]
Financial assets
Debt Securities, Available-for-sale	6,718		7,068
Investment securities - equity	19		25
Derivative Asset	63	[3]	46
Financial liabilities
Junior subordinated debt	0		0
Derivative Liability	63	[3]	37
Fair Value, Recurring [Member] | Level 3 [Member]
Financial assets
Debt Securities, Available-for-sale	0		0
Investment securities - equity	0		0
Derivative Asset	14	[3]	5
Financial liabilities
Junior subordinated debt	64		63
Derivative Liability	1	[3]	3
Fair Value, Recurring [Member] | Reported Value Measurement [Member]
Financial assets
Debt Securities, Available-for-sale	7,645		7,092
Investment securities - equity	141		160
Derivative Asset	77		51
Loans Receivable Held-for-sale, Amount	7,022		1,184
Servicing Asset	910		1,148
Financial liabilities
Derivative Liability	64		40
Fair Value, Recurring [Member] | Estimate of Fair Value Measurement [Member]
Financial assets
Debt Securities, Available-for-sale	7,645		7,092
Investment securities - equity	141		160
Derivative Asset	77		51
Loans Receivable Held-for-sale, Amount	7,024		1,173
Servicing Asset	910		1,148
Financial liabilities
Derivative Liability	64		40
Fair Value, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Level 1 [Member]
Financial assets
Debt Securities, Available-for-sale	927		24
Investment securities - equity	122		135
Derivative Asset	0		0
Loans Receivable Held-for-sale, Amount	0		0
Servicing Asset	0		0
Financial liabilities
Derivative Liability	0		0
Fair Value, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Level 2 [Member]
Financial assets
Debt Securities, Available-for-sale	6,718		7,068
Investment securities - equity	19		25
Derivative Asset	63		46
Loans Receivable Held-for-sale, Amount	7,010		1,172
Servicing Asset	0		0
Financial liabilities
Derivative Liability	63		37
Fair Value, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Level 3 [Member]
Financial assets
Debt Securities, Available-for-sale	0		0
Investment securities - equity	0		0
Derivative Asset	14		5
Loans Receivable Held-for-sale, Amount	14		1
Servicing Asset	910		1,148
Financial liabilities
Derivative Liability	$ 1		$ 3
[1]ratings differ, the Company uses an average of the available ratings by major credit agencies.[2]For rated securities, if ratings differ, the Company uses an average of the available ratings by major credit agencies.[3]See "Note 11. Derivatives and Hedging Activities." In addition, the carrying value of loans is decreased by $13 million as of March 31, 2023 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates.

Fair Value Accounting - Additio

Fair Value Accounting - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) percent shares		Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) percent shares		Jan. 25, 2022 USD ($)	Dec. 31, 2021 USD ($)	Apr. 07, 2021 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets acquired through foreclosure	$ 11			$ 11
Goodwill						$ 36.6		$ 199.8
Common Stock, Shares, Issued | shares	112,209,478			111,465,292
Loans Held-for-sale, Fair Value Disclosure	$ 1,101			$ 1,173
Financing Receivable, 90 Days or More Past Due, Still Accruing	1			1
Fair Value, Option, Loans Held as Assets, Aggregate Difference	36			34
Fair Value, Option, Loans Held as Assets, 90 Days or More Past Due, Aggregate Difference	0			0
UPB, Option, Loans Held as Assets, Current Through 89 Days	1,064			1,138
Fair Value, Option, Loans Held as Assets, Current Through 89 days, Aggregate Difference	36			34
UPB, Option, Loans Held as Assets, 90 Days or More Past Due	1			1
Investment securities - equity	141	[1]		160	[2]
Debt Securities, Available-for-sale	7,645	[1]		7,092	[2]
Fair Value, Option, Loans Held as Assets, Current Through 89 Days	1,100			1,172
Servicing Asset at Fair Value, Amount	$ 910		$ 950	$ 1,148			$ 698
Minimum | Option Adjusted Spread
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent	20			190
Minimum | Conditional Prepayment Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent	0.091			0.085
Minimum | Servicing Fee Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent	25			25
Minimum | Cost to Service
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent	93			87
Minimum | Whole loan spread to TBA price in basis points
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Measurement Input | percent				(0.6)
Minimum | Servicing Fee Multiple
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Measurement Input | percent	2.9			2.9
Minimum | Pull-through Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Measurement Input | percent	0.66			0.69
Minimum | Recapture Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent	0.200			0.200
Maximum | Option Adjusted Spread
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent	438			621
Maximum | Conditional Prepayment Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent	0.210			0.185
Maximum | Servicing Fee Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent	56.5			56.5
Maximum | Cost to Service
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent	100			94
Maximum | Whole loan spread to TBA price in basis points
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Measurement Input | percent				(0.6)
Maximum | Servicing Fee Multiple
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Measurement Input | percent	5.3			5.5
Maximum | Pull-through Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Measurement Input | percent	1			1
Maximum | Recapture Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent	0.200			0.200
Weighted Average | Option Adjusted Spread
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent	286			378
Weighted Average | Conditional Prepayment Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent	15.1			13.4
Weighted Average | Servicing Fee Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent	32.6			33.2
Weighted Average | Cost to Service
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent	95			90
Weighted Average | Whole loan spread to TBA price in basis points
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Measurement Input | percent				(0.6)
Weighted Average | Servicing Fee Multiple
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Measurement Input | percent	4.1			4.3
Weighted Average | Pull-through Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Measurement Input | percent	85			89
Weighted Average | Recapture Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input | percent	20			20
Collateralized Loan Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	$ 2,436			$ 2,706
Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	62			97
Corporate Bond Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	358			390
Residential Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	1,175			1,199
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	1,788			1,740
Nontaxable Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	860			891
US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	900
Other Security Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	66			69
CRA investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	39			49
Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	99			108
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans with an allowance recorded	$ 6			7
Junior Subordinated Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Period of basis point spread	3.05%		3.36%
Percentage of LIBOR	5.19%		4.77%
Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral Dependent Loans, Net of Allowance	$ 272			295
Other assets acquired through foreclosure	11			11
Fair Value, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral Dependent Loans, Net of Allowance	272			295
Other assets acquired through foreclosure	11			11
Fair Value, Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral Dependent Loans, Net of Allowance	0			0
Other assets acquired through foreclosure	0			0
Fair Value, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral Dependent Loans, Net of Allowance	0			0
Other assets acquired through foreclosure	0			0
Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financing Receivable Unpaid Principal Balance	1,065			1,139
Investment securities - equity	141			160
Debt Securities, Available-for-sale	7,645			7,092
Servicing Asset at Fair Value, Amount	910			1,148
Fair Value, Recurring [Member] | Common Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	3			3
Fair Value, Recurring [Member] | Collateralized Loan Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	2,436			2,706
Fair Value, Recurring [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	62			97
Fair Value, Recurring [Member] | Corporate Bond Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	358			390
Fair Value, Recurring [Member] | Residential Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	1,175			1,199
Fair Value, Recurring [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	1,787			1,740
Fair Value, Recurring [Member] | Nontaxable Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	860			891
Fair Value, Recurring [Member] | US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	900
Fair Value, Recurring [Member] | Other Security Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	67			69
Fair Value, Recurring [Member] | CRA investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	39			49
Fair Value, Recurring [Member] | Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	99			108
Fair Value, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	0			0
Debt Securities, Available-for-sale	0			0
Servicing Asset at Fair Value, Amount	910			1,148
Fair Value, Recurring [Member] | Level 3 [Member] | Common Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	0			0
Fair Value, Recurring [Member] | Level 3 [Member] | Collateralized Loan Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0			0
Fair Value, Recurring [Member] | Level 3 [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0			0
Fair Value, Recurring [Member] | Level 3 [Member] | Corporate Bond Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0			0
Fair Value, Recurring [Member] | Level 3 [Member] | Residential Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0			0
Fair Value, Recurring [Member] | Level 3 [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0			0
Fair Value, Recurring [Member] | Level 3 [Member] | Nontaxable Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0			0
Fair Value, Recurring [Member] | Level 3 [Member] | US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0
Fair Value, Recurring [Member] | Level 3 [Member] | Other Security Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0			0
Fair Value, Recurring [Member] | Level 3 [Member] | CRA investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	0			0
Fair Value, Recurring [Member] | Level 3 [Member] | Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	0			0
Fair Value, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	19			25
Debt Securities, Available-for-sale	6,718			7,068
Servicing Asset at Fair Value, Amount	0			0
Fair Value, Recurring [Member] | Level 2 [Member] | Common Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	0			0
Fair Value, Recurring [Member] | Level 2 [Member] | Collateralized Loan Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	2,436			2,706
Fair Value, Recurring [Member] | Level 2 [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	62			97
Fair Value, Recurring [Member] | Level 2 [Member] | Corporate Bond Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	358			390
Fair Value, Recurring [Member] | Level 2 [Member] | Residential Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	1,175			1,199
Fair Value, Recurring [Member] | Level 2 [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	1,787			1,740
Fair Value, Recurring [Member] | Level 2 [Member] | Nontaxable Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	860			891
Fair Value, Recurring [Member] | Level 2 [Member] | US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0
Fair Value, Recurring [Member] | Level 2 [Member] | Other Security Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	40			45
Fair Value, Recurring [Member] | Level 2 [Member] | CRA investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	14			25
Fair Value, Recurring [Member] | Level 2 [Member] | Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	5			0
Fair Value, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	122			135
Debt Securities, Available-for-sale	927			24
Servicing Asset at Fair Value, Amount	0			0
Fair Value, Recurring [Member] | Level 1 [Member] | Common Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	3			3
Fair Value, Recurring [Member] | Level 1 [Member] | Collateralized Loan Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0			0
Fair Value, Recurring [Member] | Level 1 [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0			0
Fair Value, Recurring [Member] | Level 1 [Member] | Corporate Bond Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0			0
Fair Value, Recurring [Member] | Level 1 [Member] | Residential Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0			0
Fair Value, Recurring [Member] | Level 1 [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0			0
Fair Value, Recurring [Member] | Level 1 [Member] | Nontaxable Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0			0
Fair Value, Recurring [Member] | Level 1 [Member] | US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	900
Fair Value, Recurring [Member] | Level 1 [Member] | Other Security Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	27			24
Fair Value, Recurring [Member] | Level 1 [Member] | CRA investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	25			24
Fair Value, Recurring [Member] | Level 1 [Member] | Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	$ 94			$ 108
[1]ratings differ, the Company uses an average of the available ratings by major credit agencies.[2]For rated securities, if ratings differ, the Company uses an average of the available ratings by major credit agencies.

Segments - Operating Segment In

Segments - Operating Segment Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Operating Statistics [Line Items]
Service charges and fees	$ 9.5	$ 7
Cash, Cash Equivalents and Investment Securities	13,132		$ 9,803
Loans Receivable Held-for-sale, Amount	7,022		1,184
Loans and Leases Receivable, Net of Deferred Income	46,435		51,862
Less: Allowance for credit losses	(305)		(310)
Loans, net	46,130		51,552
Other Repossessed Assets	11		11
Goodwill and intangible assets, net	677		680
Other Assets Segment	4,075		4,504
Assets	71,047		67,734
Deposits	47,587		53,644
Other borrowings	16,748		7,192
Other Liabilities Segment	1,191		1,542
Total liabilities	65,526		62,378
Stockholders' equity	5,520.5	5,011.6	5,356	$ 4,962.6
Liabilities and Equity	71,047		67,734
Excess Funds Provided by (Used in) Segment Basis	0		0
Net interest income	609.9	449.5
Provision for Loan, Lease, and Other Losses	19.4	9
Net interest income (loss) after provision for credit losses	590.5	440.5
Noninterest Income	(58)	(106.3)
Non-interest expense	(347.9)	(248.6)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	184.6	298.2
Income tax expense (benefit)	42.4	58.1
Net income	142.2	240.1
Operating Segments [Member] | Commercial Segment
Operating Statistics [Line Items]
Cash, Cash Equivalents and Investment Securities	12		12
Loans Receivable Held-for-sale, Amount	4,732		0
Loans and Leases Receivable, Net of Deferred Income	27,282		31,414
Less: Allowance for credit losses	255		262
Loans, net	27,027		31,152
Other Repossessed Assets	11		11
Goodwill and intangible assets, net	293		293
Other Assets Segment	550		435
Assets	32,625		31,903
Deposits	21,991		29,494
Other borrowings	8		27
Other Liabilities Segment	97		83
Total liabilities	22,096		29,604
Stockholders' equity	2,545		2,684
Liabilities and Equity	24,641		32,288
Excess Funds Provided by (Used in) Segment Basis	7,984		(385)
Net interest income	389.4	334.9
Provision for Loan, Lease, and Other Losses	2.7	0.6
Net interest income (loss) after provision for credit losses	392.1	334.3
Noninterest Income	(96.7)	(16.9)
Non-interest expense	(136)	(114.4)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	159.4	236.8
Income tax expense (benefit)	38.5	56.2
Net income	120.9	180.6
Operating Segments [Member] | Consumer Related Segment
Operating Statistics [Line Items]
Cash, Cash Equivalents and Investment Securities	0		0
Loans Receivable Held-for-sale, Amount	2,290		1,184
Loans and Leases Receivable, Net of Deferred Income	19,153		20,448
Less: Allowance for credit losses	50		48
Loans, net	19,103		20,400
Other Repossessed Assets	0		0
Goodwill and intangible assets, net	384		387
Other Assets Segment	1,703		2,180
Assets	23,480		24,151
Deposits	20,017		18,492
Other borrowings	927		340
Other Liabilities Segment	302		656
Total liabilities	21,246		19,488
Stockholders' equity	1,613		1,691
Liabilities and Equity	22,859		21,179
Excess Funds Provided by (Used in) Segment Basis	(621)		(2,972)
Net interest income	199.3	183.2
Provision for Loan, Lease, and Other Losses	1.5	10.5
Net interest income (loss) after provision for credit losses	197.8	172.7
Noninterest Income	(51)	(79.2)
Non-interest expense	(192)	(125)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	56.8	126.9
Income tax expense (benefit)	12.8	30.4
Net income	44	96.5
Corporate & Other
Operating Statistics [Line Items]
Cash, Cash Equivalents and Investment Securities	13,120		9,791
Loans Receivable Held-for-sale, Amount	0		0
Loans and Leases Receivable, Net of Deferred Income	0		0
Less: Allowance for credit losses	0		0
Loans, net	0		0
Other Repossessed Assets	0		0
Goodwill and intangible assets, net	0		0
Other Assets Segment	1,822		1,889
Assets	14,942		11,680
Deposits	5,579		5,658
Other borrowings	15,813		6,825
Other Liabilities Segment	792		803
Total liabilities	22,184		13,286
Stockholders' equity	1,363		981
Liabilities and Equity	23,547		14,267
Excess Funds Provided by (Used in) Segment Basis	(8,605)		$ (2,587)
Net interest income	21.2	(68.6)
Provision for Loan, Lease, and Other Losses	20.6	(2.1)
Net interest income (loss) after provision for credit losses	0.6	(66.5)
Noninterest Income	12.3	(10.2)
Non-interest expense	(19.9)	(9.2)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(31.6)	(65.5)
Income tax expense (benefit)	(8.9)	(28.5)
Net income	$ (22.7)	$ (37)

Revenue from Contracts with Cus

Revenue from Contracts with Customers (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Service charges and fees	$ 9.5	$ 7
Noninterest Income	58	106.3
Revenue from Contracts with Customers	14	14.4
Operating Segments [Member] | Commercial Segment
Disaggregation of Revenue [Line Items]
Noninterest Income	96.7	16.9
Operating Segments [Member] | Consumer Related Segment
Disaggregation of Revenue [Line Items]
Noninterest Income	51	79.2
Corporate & Other
Disaggregation of Revenue [Line Items]
Noninterest Income	$ (12.3)	$ 10.2

Business Combinations (Details)

Business Combinations (Details) - USD ($) $ in Millions			3 Months Ended
	Jan. 25, 2022	Apr. 07, 2021	Mar. 31, 2023	Mar. 31, 2022
Business Combinations [Abstract]
Business Acquisition, Effective Date of Acquisition	Jan. 25, 2022
Business Combination, Consideration Transferred	$ 57	$ 1,918.4
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	20.1	141
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Eligible for Repurchase		2,744.7
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	0.6	207.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Held for Sale		3,552.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Servicing Assets		1,347
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		11.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Right of use Asset		18.9
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets		6.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	0.1	236
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	20.8	8,265.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt		3,633.9
Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Lease Obligation		18.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liability for Loans Eligible for Repurchase		2,744.7
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	0.4	149.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	0.4	6,547
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	20.4	1,718.6
Payments to Acquire Businesses, Gross	50.6	1,231.6
Goodwill	$ 36.6	199.8
Business Acquisition, Effective Date of Acquisition	Jan. 25, 2022
Business Combination, Consideration Transferred	$ 57	1,918.4
Business Combination, Elimination of Pre-existing debt and other		686.8
Business Acquisition, Pro Forma Revenue				$ 442.8
Business Acquisition, Pro Forma Non-interest Income				122.8
Business Acquisition, Pro Forma Net Income (Loss)				236.9
Acquisition and restructure expenses			$ 0	$ 0.4
Business Acquisition, Goodwill, Expected Tax Deductible Amount		$ 185
Business Combination, Contingent Consideration, Liability	6.4
Customer Relationships
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 15.7
Finite-Lived Intangible Asset, Useful Life	7 years
Developed Technology Rights
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 4.1
Finite-Lived Intangible Asset, Useful Life	5 years
Trade Names
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 0.3
Finite-Lived Intangible Asset, Useful Life	10 years

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Subsequent Event [Line Items]
Financing Receivable, Sale		$ 915
Subsequent Event [Member]
Subsequent Event [Line Items]
Financing Receivable, Sale	$ 2,000
Credit Linked Notes Maturing June 2028
Subsequent Event [Line Items]
Debt Instrument, Face Amount			$ 300
Credit Linked Notes Maturing June 2028 | Subsequent Event [Member]
Subsequent Event [Line Items]
Debt Instrument, Face Amount		$ 275