Western Alliance Bancorporation (WAL) 10-Q 31 Oct 23 2023 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2023	Oct. 27, 2023
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 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 Common Stock, Shares Outstanding		109,473,703
Entity Central Index Key	0001212545
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Common Stock
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	Sep. 30, 2023	Dec. 31, 2022
Assets:
Cash and due from banks	$ 289	$ 259
Interest-bearing deposits in other financial institutions	3,208	784
Cash and cash equivalents	3,497	1,043
Fair value	9,689	7,092
Amortized cost	1,394	1,284
Investment securities - equity	121	160
Investments in restricted stock, at cost	219	224
Loans HFS	1,766	1,184
Loans:
Loans HFI, net of deferred fees and costs	49,447	51,862
Less: allowance for credit losses	(327.4)	(309.7)
Net loans HFI	49,120	51,552
Mortgage servicing rights	1,233	1,148
Premises and equipment, net	327	276
Operating lease right of use asset	150	163
Bank owned life insurance	184	182
Goodwill and intangible assets, net	672	680
Deferred tax assets, net	365	311
Investments in LIHTC and renewable energy	545	624
Other assets	1,609	1,811
Total assets	70,891	67,734
Deposits:
Non-interest-bearing demand	17,991	19,691
Interest-bearing	36,296	33,953
Total deposits	54,287	53,644
Other borrowings	8,745	6,299
Qualifying debt	890	893
Operating lease liability	180	185
Other liabilities	1,043	1,357
Total liabilities	65,145	62,378
Commitments and contingencies (Note 14)
Stockholders’ equity:
Preferred stock (par value $0.0001 and liquidation value per share of $25; 20,000,000 authorized; 12,000,000 issued and outstanding at September 30, 2023 and December 31, 2022)	295	295
Common stock (par value $0.0001; 200,000,000 authorized; 112,174,818 shares issued at September 30, 2023 and 111,465,292 at December 31, 2022) and additional paid in capital	2,189	2,163
Treasury stock, at cost (2,702,124 shares at September 30, 2023 and 2,550,766 shares at December 31, 2022)	(116)	(105)
Accumulated other comprehensive loss	(733)	(661)
Retained earnings	4,111	3,664
Total stockholders’ equity	5,746	5,356
Total liabilities and stockholders’ equity	$ 70,891	$ 67,734

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Investment securities - amortized cost	$ 10,672
Investment securities - AFS, ACL	4.7	$ 0
Investment securities - HTM, allowance for credit losses	7	5
Investment securities - HTM, fair value	$ 1,140	$ 1,112
Preferred stock, par value (dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, liquidation value (dollars per share)	$ 25	$ 25
Preferred stock, shares authorized (shares)	20,000,000	20,000,000
Preferred stock, shares outstanding (shares)	12,000,000	12,000,000
Preferred stock, shares issued (shares)	12,000,000	12,000,000
Common stock, par value (dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (shares)	200,000,000	200,000,000
Common stock, shares issued (shares)	112,174,818	111,465,292
Treasury stock (shares)	2,702,124	2,550,766

CONSOLIDATED INCOME STATEMENTS

CONSOLIDATED INCOME STATEMENTS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest income:
Loans, including fees	$ 860.8	$ 657	$ 2,550.7	$ 1,608.3
Investment securities	121	74	325.6	178.3
Dividends and other	44.8	8.4	120	16.9
Total interest income	1,026.6	739.4	2,996.3	1,803.5
Interest expense:
Deposits	316.2	77.6	798.9	118.8
Qualifying debt	9.5	8.9	28.3	25.9
Other borrowings	113.9	50.8	421.9	82.2
Total interest expense	439.6	137.3	1,249.1	226.9
Net interest income	587	602.1	1,747.2	1,576.6
Provision for credit losses	12.1	28.5	53.3	65
Net interest income after provision for credit losses	574.9	573.6	1,693.9	1,511.6
Non-interest income:
Net gain on loan origination and sale activities	52	14.5	145.7	78.6
Net loan servicing revenue	27.2	23	93.2	109.5
Service charges and fees	23.3	6.5	53.6	21.1
Commercial banking related income	5.6	5.1	17.8	16
Income from equity investments	0.5	4.3	2.6	13.6
(Loss) gain on recovery from credit guarantees	(4)	0.4	0.5	11.7
Gain (loss) on sales of investment securities	0.1	0	(26)	6.7
Fair value gain (loss) adjustments, net	17.8	(2.8)	(117.3)	(19.4)
Other income	6.7	10.8	20.1	25.3
Total non-interest income	129.2	61.8	190.2	263.1
Non-interest expense:
Salaries and employee benefits	137.2	136.5	431.7	413.8
Deposit costs	127.8	56.2	305.7	83.6
Data processing	33.9	21.8	88.9	59.1
Insurance	33.1	8.1	81.8	22.2
Legal, professional, and directors' fees	28.3	24.8	77.8	73.9
Occupancy	16.8	13.9	48.7	39.7
Loan servicing expenses	11.9	15.2	44.1	40.7
Loan acquisition and origination expenses	5.6	5.8	15.6	18.7
Business development and marketing	4.9	5	15.1	14.8
Gain on extinguishment of debt	0	0	(13.4)	0
Other expense	26.7	18.5	65.5	56.8
Total non-interest expense	426.2	305.8	1,161.5	823.3
Income before provision for income taxes	277.9	329.6	722.6	951.4
Income tax expense	61.3	65.6	148.1	187.1
Net income	216.6	264	574.5	764.3
Dividends on preferred stock	3.2	3.2	9.6	9.6
Net income available to common stockholders	$ 213.4	$ 260.8	$ 564.9	$ 754.7
Earnings per share:
Basic (dollars per share)	$ 1.97	$ 2.43	$ 5.22	$ 7.06
Diluted (dollars per share)	$ 1.97	$ 2.42	$ 5.21	$ 7.03
Weighted average number of common shares outstanding:
Basic (shares)	108.3	107.5	108.3	107
Diluted (shares)	108.5	107.9	108.4	107.4
Dividends declared per common share (dollars per share)	$ 0.36	$ 0.36	$ 1.08	$ 1.06

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 216.6	$ 264	$ 574.5	$ 764.3
Other comprehensive income (loss), net:
Unrealized loss on AFS securities, net of tax effect of $41.2, $74.2, $31.7, and $248.2 respectively	(120.2)	(219.9)	(94.3)	(752.3)
Unrealized (loss) gain on junior subordinated debt, net of tax effect of $0.4, $(0.5), $(0.9), and $(1.9) respectively	(1.2)	1.6	2.7	5.8
Realized (gain) loss on sale of AFS securities included in income, net of tax effect of $0.1, $0, $(6.4), and $1.8 respectively	(0.4)	0	19.1	(5.4)
Realized loss on impairment of AFS securities included in income, net of tax effect of $0, $0, $(0.4), and $0 respectively	0	0	1.2	0
Net other comprehensive loss	(121.8)	(218.3)	(71.3)	(751.9)
Comprehensive income	$ 94.8	$ 45.7	$ 503.2	$ 12.4

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Unrealized (loss) gain on AFS securities, tax effect	$ 41.2	$ 74.2	$ 31.7	$ 248.2
Unrealized gain (loss) on junior subordinated debt, tax effect	0.4	(0.5)	(0.9)	(1.9)
Realized loss (gain) on sale of AFS securities included in income, tax effect	0.1	0	(6.4)	1.8
Realized loss on impairment of AFS securities included in income, tax effect	$ 0	$ 0	$ (0.4)	$ 0

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions		Total	Preferred Stock	Common Stock	Additional Paid in Capital	Treasury Stock	Accumulated Other Comprehensive Loss	Retained Earnings
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		764.3						764.3
Restricted stock, performance stock units, and other grants, net (shares)				600,000
Restricted stock, performance stock units, and other grants, net		30.3			30.3
Restricted stock surrendered (shares)	[1]			(200,000)
Restricted stock surrendered	[1]	$ (18.4)				(18.4)
Common stock issuance, net (shares)		1,900,000		1,900,000
Common stock issuance, net		$ 157.7			157.7
Dividends paid to preferred stockholders		(9.6)						(9.6)
Dividends paid to common stockholders		(114.2)						(114.2)
Other comprehensive loss, net		(751.9)					(751.9)
Ending balance (shares) at Sep. 30, 2022			12,000,000	108,900,000
Ending balance at Sep. 30, 2022		5,020.8	$ 294.5	$ 0	2,154.2	(105.2)	(736.2)	3,413.5
Beginning balance (shares) at Jun. 30, 2022			12,000,000	108,300,000
Beginning balance at Jun. 30, 2022		4,958.8	$ 294.5	$ 0	2,094.8	(104.3)	(517.9)	3,191.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		264						264
Restricted stock, performance stock units, and other grants, net		9.4			9.4
Restricted stock surrendered	[1]	$ (0.9)				(0.9)
Common stock issuance, net (shares)		600,000		600,000
Common stock issuance, net		$ 50			50
Dividends paid to preferred stockholders		(3.2)						(3.2)
Dividends paid to common stockholders		(39)						(39)
Other comprehensive loss, net		(218.3)					(218.3)
Ending balance (shares) at Sep. 30, 2022			12,000,000	108,900,000
Ending balance at Sep. 30, 2022		5,020.8	$ 294.5	$ 0	2,154.2	(105.2)	(736.2)	3,413.5
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		574.5						574.5
Restricted stock, performance stock units, and other grants, net (shares)				700,000
Restricted stock, performance stock units, and other grants, net		25.5			25.5	0
Restricted stock surrendered (shares)	[1]			(100,000)
Restricted stock surrendered		$ (10.9)				(10.9)
Common stock issuance, net (shares)		0
Dividends paid to preferred stockholders		$ (9.6)						(9.6)
Dividends paid to common stockholders		(118.2)						(118.2)
Other comprehensive loss, net		(71.3)					(71.3)
Ending balance (shares) at Sep. 30, 2023			12,000,000	109,500,000
Ending balance at Sep. 30, 2023		5,746	$ 294.5	$ 0	2,189.2	(116.2)	(732.3)	4,110.8
Beginning balance (shares) at Jun. 30, 2023			12,000,000	109,500,000
Beginning balance at Jun. 30, 2023		5,684.9	$ 294.5	$ 0	2,180.3	(116.2)	(610.5)	3,936.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		216.6						216.6
Restricted stock, performance stock units, and other grants, net		$ 8.9			8.9
Common stock issuance, net (shares)		0
Dividends paid to preferred stockholders		$ (3.2)						(3.2)
Dividends paid to common stockholders		(39.4)						(39.4)
Other comprehensive loss, net		(121.8)					(121.8)
Ending balance (shares) at Sep. 30, 2023			12,000,000	109,500,000
Ending balance at Sep. 30, 2023		$ 5,746	$ 294.5	$ 0	$ 2,189.2	$ (116.2)	$ (732.3)	$ 4,110.8
[1]Share amounts represent Treasury Shares.

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net income	$ 574.5	$ 764.3
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Provision for credit losses	53.3	65
Depreciation and amortization	43.9	36.1
Stock-based compensation	25.4	30.3
Deferred income taxes	(31.8)	47.7
Amortization of net (discounts) premiums for investment securities	(43.4)	17.1
Amortization of tax credit investments	66.9	45.6
Amortization of operating lease right of use asset	17.6	16.4
Amortization of net deferred loan fees and net purchase premiums	(64.8)	(50.6)
Purchases and originations of loans HFS	(32,403.8)	(37,064.4)
Proceeds from sales and payments on loans held for sale	31,552.2	38,294.5
Mortgage servicing rights capitalized upon sale of mortgage loans	(653)	(578.1)
Net (gains) losses on:
Change in fair value of loans HFS, mortgage servicing rights, and related derivatives	(44.6)	(139.3)
Fair value adjustments	122.2	20.4
Sale of investment securities	26	(6.7)
Extinguishment of debt	(13.4)	0
Other	8.1	(3.6)
Other assets and liabilities, net	94.9	(43.8)
Net cash (used in) provided by operating activities	(669.8)	1,450.9
Investment securities - AFS
Purchases	(6,853.5)	(2,286.4)
Principal pay downs and maturities	3,559.2	511.8
Proceeds from sales	777.8	124.6
Investment securities - HTM
Purchases	(163.2)	(230.3)
Principal pay downs and maturities	51.5	68.1
Equity securities carried at fair value
Purchases	(0.5)	(35.2)
Redemptions	9	1.1
Proceeds from sales	1.5	14.1
Proceeds from sale of mortgage servicing rights and related holdbacks, net	615.6	382.2
Purchase of other investments	(116.6)	(300.3)
Proceeds from bank owned life insurance, net	0.7	0
Net decrease (increase) in loans HFI	1,926.5	(11,736.5)
Purchase of premises, equipment, and other assets, net	(87)	(84.2)
Cash consideration paid for acquisitions, net of cash acquired	0	(50)
Net cash used in investing activities	(279)	(13,621)
Cash flows from financing activities:
Net increase in deposits	642.9	7,976.7
Net proceeds from issuance of long-term debt	9.9	485.5
Payments on long-term debt	(538.4)	(24.8)
Net increase in short-term borrowings	2,962.9	4,810.3
Net proceeds from repurchase obligations	2,661.8	0
Payments on repurchase obligations	(2,198)	0
Cash paid for tax withholding on vested restricted stock and other	(10.9)	(18.4)
Cash dividends paid on common stock and preferred stock	(127.8)	(123.8)
Proceeds from issuance of common stock in offerings, net	0	157.7
Net cash provided by financing activities	3,402.4	13,263.2
Net increase in cash and cash equivalents	2,453.6	1,093.1
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	3,497	1,609.5
Cash paid during the period for:
Interest	1,108.5	211.4
Income taxes, net	57	190.7
Non-cash activities:
Transfers of mortgage-backed securities in settlement of secured borrowings	461.2	452.9
Net increase in unfunded commitments and obligations	29.1	281.1
Transfers of securitized loans HFS to AFS securities	182	131
Transfers of loans HFI to HFS, net of fair value loss adjustment (1)	6,646.8	0
Transfers of loans HFS to HFI, at amortized cost	$ 2,357.2	$ 1,505.7

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	1. 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 September 30, 2023 and for the three and nine months ended September 30, 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 write-offs 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 or evaluated using fair value measurements; and 3) accounting for income taxes. Principles of consolidation As of September 30, 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 continued effects from the bank failures in early 2023 may give rise to a triggering event and elected to perform a Step 0 goodwill impairment assessment, which included assessing the financial performance of the Company and analyzing qualitative factors applicable to the Company. As of September 30, 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 September 30, 2023. The Company's goodwill totaled $527 million at September 30, 2023 and December 31, 2022, with $290 million and $237 million allocated to the Commercial and Consumer Related segments, respectively.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Investment Securities	2. INVESTMENT SECURITIES The carrying amounts and fair values of investment securities are summarized as follows: September 30, 2023 Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value (in millions) Held-to-maturity Private label residential MBS $ 189 $ — $ (51) $ 138 Tax-exempt 1,212 — (210) 1,002 Total HTM securities $ 1,401 $ — $ (261) $ 1,140 Available-for-sale debt securities CLO $ 2,183 $ 1 $ (19) $ 2,165 Commercial MBS issued by GSEs 212 — (13) 199 Corporate debt securities 411 — (51) 360 Private label residential MBS 1,340 — (272) 1,068 Residential MBS issued by GSEs 2,333 — (475) 1,858 Tax-exempt 918 — (143) 775 U.S. Treasury securities 3,201 — (3) 3,198 Other 74 3 (11) 66 Total AFS debt securities $ 10,672 $ 4 $ (987) $ 9,689 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 $121 million and $160 million at September 30, 2023 and December 31, 2022, respectively. Unrealized gains on equity securities of $5.1 million and losses of $3.7 million for the three months ended September 30, 2023 and 2022, respectively, and losses of $3.3 million and $20.4 million for the nine months ended September 30, 2023 and 2022, respectively, were recognized in earnings as a component of fair value gain (loss) adjustments. Securities with carrying amounts of approximately $5.5 billion and $1.7 billion at September 30, 2023 and December 31, 2022, respectively, were pledged for various purposes as required or permitted by law. The following tables summarize the Company's AFS debt securities in an unrealized loss position, aggregated by major security type and length of time in a continuous unrealized loss position: September 30, 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 $ 1 $ 129 $ 18 $ 1,757 $ 19 $ 1,886 Commercial MBS issued by GSEs 2 145 11 53 13 198 Corporate debt securities (1) — — 51 352 51 352 Private label residential MBS 1 25 271 1,016 272 1,041 Residential MBS issued by GSEs 12 380 463 1,475 475 1,855 Tax-exempt 6 69 137 706 143 775 U.S. Treasury securities 3 2,444 — — 3 2,444 Other 1 9 10 44 11 53 Total AFS securities $ 26 $ 3,201 $ 961 $ 5,403 $ 987 $ 8,604 (1) Includes securities with an ACL that have a fair value of $143 million and unrealized losses of $29 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 September 30, 2023 was 869, 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 U.S. Treasury securities and 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 primarily 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 the continued effects from the bank failures in early 2023, 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 issuers' credit ratings, probability of default, and other factors. As a result of the analysis, a $0.3 million and $21.8 million provision for credit losses was recognized during the three and nine months ended September 30, 2023, respectively. The provision for credit losses for the nine months ended September 30, 2023 included recognition of a $17.1 million charge-off for one debt security issued by a regional bank that was sold. 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 additional credit losses on the Company's remaining portfolio have been recognized during the three and nine months ended September 30, 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 September 30, 2023 Balance, Provision for Credit Losses Charge-offs Recoveries Balance, (in millions) Available for sale securities Corporate debt securities $ 4.4 $ 0.3 $ — $ — $ 4.7 Nine Months Ended September 30, 2023 Balance, Provision for Credit Losses Charge-offs Recoveries Balance, (in millions) Available for sale securities Corporate debt securities $ — $ 21.8 $ (17.1) $ — $ 4.7 There were no credit losses recognized on AFS securities during the three and nine months ended September 30, 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 September 30, 2023 Balance, Provision for Credit Losses Charge-offs Recoveries Balance, (in millions) Held-to-maturity debt securities Tax-exempt $ 6.0 $ 0.7 $ — $ — $ 6.7 Nine Months Ended September 30, 2023 Balance, Provision for Credit Losses Charge-offs Recoveries Balance, (in millions) Held-to-maturity debt securities Tax-exempt $ 5.2 $ 1.5 $ — $ — $ 6.7 Three Months Ended September 30, 2022: Balance, Provision for Credit Losses Charge-offs Recoveries Balance (in millions) Held-to-maturity debt securities Tax-exempt $ 3.2 $ 1.2 $ — $ — $ 4.4 Nine Months Ended September 30, 2022: Balance, Recovery of Credit Losses Charge-offs Recoveries Balance (in millions) Held-to-maturity debt securities Tax-exempt $ 5.2 $ (0.8) $ — $ — $ 4.4 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 $5 million and $3 million at September 30, 2023 and December 31, 2022, respectively, and is excluded from the estimate of expected credit losses. The following tables summarize the carrying amount of the Company’s investment ratings position, which are updated quarterly and used to monitor the credit quality of the Company's securities: September 30, 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 $ — $ — $ — $ — $ — $ — $ 189 $ 189 Tax-exempt — — — — — — 1,212 1,212 Total HTM securities (1) $ — $ — $ — $ — $ — $ — $ 1,401 $ 1,401 Available-for-sale debt securities CLO $ 121 $ — $ 1,980 $ 64 $ — $ — $ — $ 2,165 Commercial MBS issued by GSEs — 199 — — — — — 199 Corporate debt securities — — — 75 225 60 — 360 Private label residential MBS 1,044 — 24 — — — — 1,068 Residential MBS issued by GSEs — 1,858 — — — — — 1,858 Tax-exempt 8 15 329 348 — — 75 775 U.S. Treasury securities — 3,198 — — — — — 3,198 Other — — 9 9 29 3 16 66 Total AFS securities (1) $ 1,173 $ 5,270 $ 2,342 $ 496 $ 254 $ 63 $ 91 $ 9,689 Equity securities CRA investments $ — $ 24 $ — $ — $ — $ — $ — $ 24 Preferred stock — — — — 52 34 11 97 Total equity securities (1) $ — $ 24 $ — $ — $ 52 $ 34 $ 11 $ 121 (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 September 30, 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 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. September 30, 2023 Amortized Cost Estimated Fair Value (in millions) Held-to-maturity Due in one year or less $ 21 $ 21 After one year through five years 14 14 After five years through ten years 77 64 After ten years 1,100 903 Mortgage-backed securities 189 138 Total HTM securities $ 1,401 $ 1,140 Available-for-sale Due in one year or less $ 3,201 $ 3,198 After one year through five years 166 155 After five years through ten years 900 855 After ten years 2,520 2,356 Mortgage-backed securities 3,885 3,125 Total AFS securities $ 10,672 $ 9,689 The following table presents gross gains and losses on sales of investment securities: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Available-for-sale securities Gross gains $ 0.5 $ — $ 4.0 $ 7.3 Gross losses — — (29.6) — Net gains (losses) on AFS securities $ 0.5 $ — $ (25.6) $ 7.3 Equity securities Gross gains $ — $ — $ — $ — Gross losses (0.4) — (0.4) (0.6) Net losses on equity securities $ (0.4) $ — $ (0.4) $ (0.6) During the three months ended September 30, 2023, the Company sold securities with a carrying value of $7 million and recognized a net gain of $0.1 million. During the nine months ended September 30, 2023, the Company sold securities with a carrying value of $821 million and recognized a net loss of $26.0 million. Sales of CLOs were executed as part of the Company's balance sheet repositioning strategy and resulted in the gross AFS securities losses above. Sales of MBS and tax-exempt municipal securities were completed to secure gains. During the three and nine months ended September 30, 2022, the Company sold securities with a carrying value of $5 million and $132 million, respectively, and recognized a net gain of zero and $6.7 million, respectively.

Loans Held For Sale

Loans Held For Sale	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Loans Held For Sale	3. LOANS HELD FOR SALE The Company purchases and originates residential mortgage loans to be sold or securitized through its AmeriHome mortgage banking business channel. In addition, as part of the Company's balance sheet repositioning strategy, the Company transferred $5.9 billion of loans, net of a fair value loss adjustment (primarily commercial and industrial loans) to HFS as of March 31, 2023. Loans transferred from HFI to HFS were transferred at the lower of its amortized cost basis (adjusted for any charge-offs) or fair value. If the amortized cost basis of the transferred loan exceeded its fair value, a valuation allowance equal to the difference in these amounts was established on the transfer date and any subsequent changes in the valuation allowance were recognized in earnings. Any ACL previously recorded on transferred loans was reversed and recognized in earnings at the time of the transfer. The Company completed loan dispositions from this transferred loan pool totaling $4.3 billion through September 30, 2023 and transferred all remaining HFS loans back to HFI at the end of the period as a result of a change in management's intentions. The following is a summary of loans HFS by type: September 30, 2023 December 31, 2022 (in millions) Government-insured or guaranteed: EBO (1) $ 3 $ — Non-EBO 1,165 591 Total government-insured or guaranteed 1,168 591 Agency-conforming 585 593 Non-agency 13 — Total loans HFS $ 1,766 $ 1,184 (1) EBO loans are delinquent FHA, VA, or USDA loans purchased from GNMA pools under the terms of the GNMA MBS program that can be repooled when loans are brought current either through the borrower's reperformance or through completion of a loan modification. The following is a summary of the net gain on loan purchase, origination, and sale activities on residential mortgage loans to be sold or securitized: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Mortgage servicing rights capitalized upon sale of loans $ 265.8 $ 180.6 $ 653.0 $ 578.1 Net proceeds from sale of loans (1) (274.7) (207.1) (612.7) (905.7) Provision for and change in estimate of liability for losses under representations and warranties, net 0.1 0.7 2.8 2.3 Change in fair value (10.1) (75.1) (13.2) (82.0) Change in fair value of derivatives: Unrealized gain (loss) on derivatives 10.3 80.7 25.3 112.1 Realized gain on derivatives 44.5 18.3 47.0 321.8 Total change in fair value of derivatives 54.8 99.0 72.3 433.9 Net gain on residential mortgage loans HFS $ 35.9 $ (1.9) $ 102.2 $ 26.6 Loan acquisition and origination fees 16.1 16.4 43.5 52.0 Net gain on loan origination and sale activities $ 52.0 $ 14.5 $ 145.7 $ 78.6 (1) Represents the difference between cash proceeds received upon settlement and loan basis. 4. LOANS, LEASES AND ALLOWANCE FOR CREDIT LOSSES The composition of the Company's HFI loan portfolio is as follows: September 30, 2023 December 31, 2022 (in millions) Warehouse lending $ 6,439 $ 5,561 Municipal & nonprofit 1,474 1,524 Tech & innovation 2,254 2,293 Equity fund resources 1,034 3,717 Other commercial and industrial 7,317 7,793 CRE - owner occupied 1,624 1,656 Hotel franchise finance 3,837 3,807 Other CRE - non-owner occupied 5,952 5,457 Residential 13,301 13,996 Residential - EBO 1,343 1,884 Construction and land development 4,652 3,995 Other 220 179 Total loans HFI 49,447 51,862 Allowance for credit losses (327) (310) Total loans HFI, net of allowance $ 49,120 $ 51,552 Loans classified as HFI are stated at the amount of unpaid principal, adjusted for net deferred fees and costs, premiums and discounts on acquired and purchased loans, and an ACL. Net deferred fees of $112 million and $141 million reduced the carrying value of loans as of September 30, 2023 and December 31, 2022, respectively. Net unamortized purchase premiums on acquired and purchased loans of $177 million and $195 million increased the carrying value of loans as of September 30, 2023 and December 31, 2022, respectively. Nonaccrual and Past Due Loans 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: September 30, 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 — 7 7 — Other commercial and industrial 52 17 69 — CRE - owner occupied 8 1 9 — Other CRE - non-owner occupied 77 — 77 — Residential — 62 62 — Residential - EBO — — — 439 Total $ 137 $ 100 $ 237 $ 439 Loans contractually delinquent by 90 days or more and still accruing totaled $439 million at September 30, 2023 and consisted of government guaranteed EBO residential loans. December 31, 2022 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 $ — $ 7 $ 7 $ — Tech & innovation — 1 1 — Other commercial and industrial 1 23 24 — CRE - owner occupied 10 2 12 — Hotel franchise finance — 10 10 — Other CRE - non-owner occupied 5 3 8 — Residential — 19 19 — Residential - EBO — — — 582 Construction and land development 4 — 4 — Total $ 20 $ 65 $ 85 $ 582 Loans contractually delinquent by 90 days or more and still accruing totaled $582 million at December 31, 2022 and consisted of government guaranteed EBO residential loans. The reduction in interest income associated with loans on nonaccrual status was approximately $4.5 million and $1.3 million for the three months ended September 30, 2023 and 2022, respectively, and $8.1 million and $3.6 million for the nine months ended September 30, 2023 and 2022, respectively. The following table presents an aging analysis of past due loans by loan portfolio segment: September 30, 2023 Current 30-59 Days 60-89 Days Over 90 days Total Total (in millions) Warehouse lending $ 6,439 $ — $ — $ — $ — $ 6,439 Municipal & nonprofit 1,474 — — — — 1,474 Tech & innovation 2,254 — — — — 2,254 Equity fund resources 1,034 — — — — 1,034 Other commercial and industrial 7,317 — — — — 7,317 CRE - owner occupied 1,622 — 2 — 2 1,624 Hotel franchise finance 3,837 — — — — 3,837 Other CRE - non-owner occupied 5,923 29 — — 29 5,952 Residential 13,216 68 17 — 85 13,301 Residential - EBO 643 158 103 439 700 1,343 Construction and land development 4,579 54 19 — 73 4,652 Other 220 — — — — 220 Total loans $ 48,558 $ 309 $ 141 $ 439 $ 889 $ 49,447 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 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 As of and for the nine months ended September 30, 2023 2023 2022 2021 2020 2019 Prior (in millions) Warehouse lending Pass $ 594 $ 260 $ 4 $ 289 $ — $ — $ 5,290 $ 6,437 Special mention — — — — — — 2 2 Classified — — — — — — — — Total $ 594 $ 260 $ 4 $ 289 $ — $ — $ 5,292 $ 6,439 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Municipal & nonprofit Pass $ 14 $ 152 $ 192 $ 182 $ 69 $ 834 $ — $ 1,443 Special mention — 7 — — — 11 — 18 Classified — — — — 6 7 — 13 Total $ 14 $ 159 $ 192 $ 182 $ 75 $ 852 $ — $ 1,474 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Tech & innovation Pass $ 406 $ 683 $ 196 $ 58 $ 53 $ 1 $ 785 $ 2,182 Special mention 8 11 1 6 — — 17 43 Classified 14 7 2 3 — — 3 29 Total $ 428 $ 701 $ 199 $ 67 $ 53 $ 1 $ 805 $ 2,254 Current period gross charge-offs $ 2 $ — $ — $ — $ — $ — $ — $ 2 Equity fund resources Pass $ 280 $ 32 $ 47 $ 37 $ 2 $ — $ 636 $ 1,034 Special mention — — — — — — — — Classified — — — — — — — — Total $ 280 $ 32 $ 47 $ 37 $ 2 $ — $ 636 $ 1,034 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Other commercial and industrial Pass $ 1,555 $ 1,691 $ 668 $ 193 $ 100 $ 225 $ 2,625 $ 7,057 Special mention 94 53 2 — — — — 149 Classified 1 38 63 1 4 1 3 111 Total $ 1,650 $ 1,782 $ 733 $ 194 $ 104 $ 226 $ 2,628 $ 7,317 Current period gross charge-offs $ 1 $ 3 $ 10 $ 4 $ — $ — $ 1 $ 19 CRE - owner occupied Pass $ 93 $ 347 $ 330 $ 165 $ 136 $ 491 $ 36 $ 1,598 Special mention 4 4 — — 1 5 — 14 Classified — — 4 2 1 5 — 12 Total $ 97 $ 351 $ 334 $ 167 $ 138 $ 501 $ 36 $ 1,624 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Hotel franchise finance Pass $ 454 $ 1,531 $ 618 $ 95 $ 470 $ 173 $ 134 $ 3,475 Special mention 37 22 67 — — 68 — 194 Classified 46 9 20 26 43 24 — 168 Total $ 537 $ 1,562 $ 705 $ 121 $ 513 $ 265 $ 134 $ 3,837 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Term Loan Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Total As of and for the nine months ended September 30, 2023 2023 2022 2021 2020 2019 Prior (in millions) Other CRE - non-owner occupied Pass $ 1,370 $ 2,227 $ 739 $ 535 $ 186 $ 257 $ 246 $ 5,560 Special mention 16 42 72 71 29 — — 230 Classified 48 1 93 1 15 4 — 162 Total $ 1,434 $ 2,270 $ 904 $ 607 $ 230 $ 261 $ 246 $ 5,952 Current period gross charge-offs $ — $ — $ 5 $ — $ — $ — $ — $ 5 Residential Pass $ 277 $ 3,603 $ 8,022 $ 827 $ 275 $ 212 $ 23 $ 13,239 Special mention — — — — — — — — Classified — 21 32 3 3 3 — 62 Total $ 277 $ 3,624 $ 8,054 $ 830 $ 278 $ 215 $ 23 $ 13,301 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Residential - EBO Pass $ 1 $ 10 $ 239 $ 564 $ 268 $ 261 $ — $ 1,343 Special mention — — — — — — — — Classified — — — — — — — — Total $ 1 $ 10 $ 239 $ 564 $ 268 $ 261 $ — $ 1,343 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Construction and land development Pass $ 910 $ 1,985 $ 418 $ 69 $ — $ 1 $ 1,190 $ 4,573 Special mention — — 6 12 — — — 18 Classified — 19 — 42 — — — 61 Total $ 910 $ 2,004 $ 424 $ 123 $ — $ 1 $ 1,190 $ 4,652 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Other Pass $ 8 $ 14 $ 3 $ 13 $ 4 $ 66 $ 112 $ 220 Special mention — — — — — — — — Classified — — — — — — — — Total $ 8 $ 14 $ 3 $ 13 $ 4 $ 66 $ 112 $ 220 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Total by Risk Category Pass $ 5,962 $ 12,535 $ 11,476 $ 3,027 $ 1,563 $ 2,521 $ 11,077 $ 48,161 Special mention 159 139 148 89 30 84 19 668 Classified 109 95 214 78 72 44 6 618 Total $ 6,230 $ 12,769 $ 11,838 $ 3,194 $ 1,665 $ 2,649 $ 11,102 $ 49,447 Current period gross charge-offs $ 3 $ 3 $ 15 $ 4 $ — $ — $ 1 $ 26 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 basis of loans HFI that were modified during the period by loan portfolio segment: Amortized Cost Basis at September 30, 2023 Payment Delay and Term Extension Term Extension Payment Delay Total % of Total Class of Financing Receivable Three Months Ended (dollars in millions) Tech & innovation $ — $ — $ 7 $ 7 0.3 % Other commercial and industrial — 1 12 13 0.2 CRE - owner occupied — 3 — 3 0.2 Hotel franchise finance — 20 — 20 0.5 Other CRE - non-owner occupied — 20 — 20 0.3 Total $ — $ 44 $ 19 $ 63 0.1 % Amortized Cost Basis at September 30, 2023 Payment Delay and Term Extension Term Extension Payment Delay Total % of Total Class of Financing Receivable Nine Months Ended (dollars in millions) Tech & innovation $ 2 $ — $ 7 $ 9 0.4 % Other commercial and industrial — 24 12 36 0.5 CRE - owner occupied — 3 — 3 0.2 Hotel franchise finance — 46 — 46 1.2 Other CRE - non-owner occupied — 48 — 48 0.8 Residential — — 1 1 0.0 Total $ 2 $ 121 $ 20 $ 143 0.3 % The performance of these modified loans is monitored for 12 months following the modification. As of September 30, 2023, modified loans on nonaccrual status totaled $36 million and the remaining $107 million were current with contractual payments. In the normal course of business, the Company also modifies EBO loans, which are delinquent FHA, VA, or USDA insured or guaranteed loans repurchased under the terms of the GNMA MBS program and can be repooled or resold when loans are brought current. During the three and nine months ended September 30, 2023, the Company completed modifications of EBO loans with an amortized cost of $84 million and $176 million, respectively. These modifications were largely payment delays and term extensions, or both. Troubled Debt Restructurings Prior to the adoption of ASU 2022-02, the Company accounted for a modification to the contractual terms of a loan that resulted in granting a concession to a borrower experiencing financial difficulties as a TDR. The loan terms that were modified or restructured due to a borrower’s financial situation included, but were not limited to, a reduction in the stated interest rate, an extension of the maturity or renewal of the loan at an interest rate below current market, a reduction in the face amount of the debt, a reduction in the accrued interest, or deferral of interest payments. The majority of the Company's modifications were extensions in terms or deferral of payments which resulted in no lost principal or interest. Consistent with regulatory guidance, a TDR loan that was subsequently modified in another restructuring agreement but had shown sustained performance and classification as a TDR, was removed from TDR status provided that the modified terms were market-based at the time of modification. 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 As of December 31, 2022, the ACL on TDR loans totaled $4 million and there were no outstanding commitments on TDR loans. During the three months ended September 30, 2022, the Company had two new TDR loans with a recorded investment of $14 million. During the nine months ended September 30, 2022, the Company had four new TDR loans with a recorded investment of $17 million. No principal amounts were forgiven and there were no waived fees or other expenses resulting from these TDRs. During the three and nine months ended September 30, 2022, there were no loans for which there was a payment default within 12 months following the modification. Collateral-Dependent Loans The following table presents the amortized cost basis of collateral-dependent loans by loan portfolio segment: September 30, 2023 December 31, 2022 Real Estate Collateral Other Collateral Total Real Estate Collateral Other Collateral Total (in millions) Municipal & nonprofit $ — $ 12 $ 12 $ — $ 7 $ 7 Tech & innovation — — — — 6 6 Other commercial and industrial — 8 8 — 30 30 CRE - owner occupied 6 — 6 42 — 42 Hotel franchise finance 125 — 125 186 — 186 Other CRE - non-owner occupied 160 — 160 27 — 27 Construction and land development 61 — 61 4 — 4 Total $ 352 $ 20 $ 372 $ 259 $ 43 $ 302 The Company did not identify any significant changes in the extent to which collateral secures its collateral dependent loans, whether in the form of general deterioration or from other factors during the period ended September 30, 2023. Allowance for Credit Losses The ACL consists of the ACL on funded loans HFI and an ACL on unfunded loan commitments. The ACL on HTM securities is estimated separately from loans, see "Note 2. Investment Securities" of these Notes to Unaudited Consolidated Financial Statements for further discussion. Management considers the level of ACL to be a reasonable and supportable estimate of expected credit losses inherent within the Company's HFI loan portfolio as of September 30, 2023. 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 September 30, 2023 Balance, Provision for (Recovery of) Credit Losses Charge-offs Recoveries Balance, (in millions) Warehouse lending $ 5.2 $ (0.5) $ — $ — $ 4.7 Municipal & nonprofit 16.5 0.2 — — 16.7 Tech & innovation 33.6 (1.6) — — 32.0 Equity fund resources 1.7 — — — 1.7 Other commercial and industrial 51.8 22.8 5.4 (0.3) 69.5 CRE - owner occupied 8.0 (0.3) — — 7.7 Hotel franchise finance 45.7 (5.1) — — 40.6 Other CRE - non-owner occupied 90.1 8.6 3.0 — 95.7 Residential 33.9 (7.9) — (0.1) 26.1 Residential - EBO — — — — — Construction and land development 31.7 (2.6) — — 29.1 Other 2.9 0.7 0.1 (0.1) 3.6 Total $ 321.1 $ 14.3 $ 8.5 $ (0.5) $ 327.4 Nine Months Ended September 30, 2023 Balance, Provision for (Recovery of) Credit Losses Charge-offs Recoveries Balance, (in millions) Warehouse lending $ 8.4 $ (3.7) $ — $ — $ 4.7 Municipal & nonprofit 15.9 0.8 — — 16.7 Tech & innovation 30.8 3.0 1.8 — 32.0 Equity fund resources 6.4 (4.7) — — 1.7 Other commercial and industrial 85.9 (2.0) 18.7 (4.3) 69.5 CRE - owner occupied 7.1 0.6 — — 7.7 Hotel franchise finance 46.9 (6.3) — — 40.6 Other CRE - non-owner occupied 47.4 53.5 5.2 — 95.7 Residential 30.4 (4.4) — (0.1) 26.1 Residential - EBO — — — — — Construction and land development 27.4 1.7 — — 29.1 Other 3.1 0.6 0.2 (0.1) 3.6 Total $ 309.7 $ 39.1 $ 25.9 $ (4.5) $ 327.4 Three Months Ended September 30, 2022 Balance, Provision for (Recovery of) Credit Losses Charge-offs Recoveries Balance, (in millions) Warehouse lending $ 3.7 $ 0.7 $ — $ — $ 4.4 Municipal & nonprofit 13.6 1.6 — — 15.2 Tech & innovation 25.4 (0.2) — — 25.2 Equity fund resources 14.0 (3.1) — — 10.9 Other commercial and industrial 119.2 (14.7) 2.1 (3.8) 106.2 CRE - owner occupied 7.5 (0.8) — — 6.7 Hotel franchise finance 33.8 17.2 — — 51.0 Other CRE - non-owner occupied 22.1 11.2 — (0.1) 33.4 Residential 18.8 6.8 — — 25.6 Construction and land development 12.2 10.1 — (0.1) 22.4 Other 2.9 0.2 — — 3.1 Total $ 273.2 $ 29.0 $ 2.1 $ (4.0) $ 304.1 Nine Months Ended September 30, 2022 Balance, Provision for (Recovery of) Credit Losses Charge-offs Recoveries Balance, (in millions) Warehouse lending $ 3.0 $ 1.4 $ — $ — $ 4.4 Municipal & nonprofit 13.7 1.5 — — 15.2 Tech & innovation 25.7 (2.5) — (2.0) 25.2 Equity fund resources 9.6 1.3 — — 10.9 Other commercial and industrial 103.6 4.7 7.0 (4.9) 106.2 CRE - owner occupied 10.6 (4.0) — (0.1) 6.7 Hotel franchise finance 41.5 9.5 — — 51.0 Other CRE - non-owner occupied 16.9 16.4 — (0.1) 33.4 Residential 12.5 13.1 — — 25.6 Construction and land development 12.5 9.8 — (0.1) 22.4 Other 2.9 0.1 0.1 (0.2) 3.1 Total $ 252.5 $ 51.3 $ 7.1 $ (7.4) $ 304.1 Accrued interest receivable of $290 million and $304 million at September 30, 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 $5 million and $9 million, as of September 30, 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 Sheet. The below table reflects the activity in the ACL on unfunded loan commitments: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Balance, beginning of period $ 41.1 $ 53.8 $ 47.0 $ 37.6 Provision for credit losses (3.2) (1.7) (9.1) 14.5 Balance, end of period $ 37.9 $ 52.1 $ 37.9 $ 52.1 The following tables disaggregate the Company's ACL on funded loans HFI and loan balances by measurement methodology: September 30, 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 $ 6,439 $ — $ 6,439 $ 4.7 $ — $ 4.7 Municipal & nonprofit 1,461 13 1,474 13.2 3.5 16.7 Tech & innovation 2,225 29 2,254 27.9 4.1 32.0 Equity fund resources 1,034 — 1,034 1.7 — 1.7 Other commercial and industrial 7,209 108 7,317 63.3 6.2 69.5 CRE - owner occupied 1,615 9 1,624 7.7 — 7.7 Hotel franchise finance 3,669 168 3,837 40.6 — 40.6 Other CRE - non-owner occupied 5,791 161 5,952 95.7 — 95.7 Residential 13,301 — 13,301 26.1 — 26.1 Residential EBO 1,343 — 1,343 — — — Construction and land development 4,592 60 4,652 29.1 — 29.1 Other 220 — 220 3.6 — 3.6 Total $ 48,899 $ 548 $ 49,447 $ 313.6 $ 13.8 $ 327.4 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 Loan Purchases and Sales During the three and nine months ended September 30, 2023, loan purchases totaled $329 million and $1.4 billion, respectively, which consisted primarily of commercial and industrial and residential loans. Loan purchases during the three and nine months ended September 30, 2022 totaled $2.7 billion and $8.2 billion, respectively, which consisted primarily of residential loans. There were no loans purchased with more-than-insignificant deterioration in credit quality during the three and nine months ended September 30, 2023 and 2022. The Company transferred $6.0 billion of loans HFI (primarily commercial and industrial loans) to HFS as of March 31, 2023. The loans were transferred to HFS net of a fair value loss adjustment of $123.5 million, or a carrying value of $5.9 billion. From March 31, 2023 through September 30, 2023, the Company transferred an additional $0.7 billion from loans HFI to HFS. The Company completed loan dispositions from this HFS loan pool totaling $4.3 billion through September 30, 2023 and transferred all remaining loans in this pool back to HFI at the end of the period as a result of a change in management's intentions.

Loans, Leases and Allowance for

Loans, Leases and Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Loans, Leases and Allowance for Credit Losses	3. LOANS HELD FOR SALE The Company purchases and originates residential mortgage loans to be sold or securitized through its AmeriHome mortgage banking business channel. In addition, as part of the Company's balance sheet repositioning strategy, the Company transferred $5.9 billion of loans, net of a fair value loss adjustment (primarily commercial and industrial loans) to HFS as of March 31, 2023. Loans transferred from HFI to HFS were transferred at the lower of its amortized cost basis (adjusted for any charge-offs) or fair value. If the amortized cost basis of the transferred loan exceeded its fair value, a valuation allowance equal to the difference in these amounts was established on the transfer date and any subsequent changes in the valuation allowance were recognized in earnings. Any ACL previously recorded on transferred loans was reversed and recognized in earnings at the time of the transfer. The Company completed loan dispositions from this transferred loan pool totaling $4.3 billion through September 30, 2023 and transferred all remaining HFS loans back to HFI at the end of the period as a result of a change in management's intentions. The following is a summary of loans HFS by type: September 30, 2023 December 31, 2022 (in millions) Government-insured or guaranteed: EBO (1) $ 3 $ — Non-EBO 1,165 591 Total government-insured or guaranteed 1,168 591 Agency-conforming 585 593 Non-agency 13 — Total loans HFS $ 1,766 $ 1,184 (1) EBO loans are delinquent FHA, VA, or USDA loans purchased from GNMA pools under the terms of the GNMA MBS program that can be repooled when loans are brought current either through the borrower's reperformance or through completion of a loan modification. The following is a summary of the net gain on loan purchase, origination, and sale activities on residential mortgage loans to be sold or securitized: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Mortgage servicing rights capitalized upon sale of loans $ 265.8 $ 180.6 $ 653.0 $ 578.1 Net proceeds from sale of loans (1) (274.7) (207.1) (612.7) (905.7) Provision for and change in estimate of liability for losses under representations and warranties, net 0.1 0.7 2.8 2.3 Change in fair value (10.1) (75.1) (13.2) (82.0) Change in fair value of derivatives: Unrealized gain (loss) on derivatives 10.3 80.7 25.3 112.1 Realized gain on derivatives 44.5 18.3 47.0 321.8 Total change in fair value of derivatives 54.8 99.0 72.3 433.9 Net gain on residential mortgage loans HFS $ 35.9 $ (1.9) $ 102.2 $ 26.6 Loan acquisition and origination fees 16.1 16.4 43.5 52.0 Net gain on loan origination and sale activities $ 52.0 $ 14.5 $ 145.7 $ 78.6 (1) Represents the difference between cash proceeds received upon settlement and loan basis. 4. LOANS, LEASES AND ALLOWANCE FOR CREDIT LOSSES The composition of the Company's HFI loan portfolio is as follows: September 30, 2023 December 31, 2022 (in millions) Warehouse lending $ 6,439 $ 5,561 Municipal & nonprofit 1,474 1,524 Tech & innovation 2,254 2,293 Equity fund resources 1,034 3,717 Other commercial and industrial 7,317 7,793 CRE - owner occupied 1,624 1,656 Hotel franchise finance 3,837 3,807 Other CRE - non-owner occupied 5,952 5,457 Residential 13,301 13,996 Residential - EBO 1,343 1,884 Construction and land development 4,652 3,995 Other 220 179 Total loans HFI 49,447 51,862 Allowance for credit losses (327) (310) Total loans HFI, net of allowance $ 49,120 $ 51,552 Loans classified as HFI are stated at the amount of unpaid principal, adjusted for net deferred fees and costs, premiums and discounts on acquired and purchased loans, and an ACL. Net deferred fees of $112 million and $141 million reduced the carrying value of loans as of September 30, 2023 and December 31, 2022, respectively. Net unamortized purchase premiums on acquired and purchased loans of $177 million and $195 million increased the carrying value of loans as of September 30, 2023 and December 31, 2022, respectively. Nonaccrual and Past Due Loans 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: September 30, 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 — 7 7 — Other commercial and industrial 52 17 69 — CRE - owner occupied 8 1 9 — Other CRE - non-owner occupied 77 — 77 — Residential — 62 62 — Residential - EBO — — — 439 Total $ 137 $ 100 $ 237 $ 439 Loans contractually delinquent by 90 days or more and still accruing totaled $439 million at September 30, 2023 and consisted of government guaranteed EBO residential loans. December 31, 2022 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 $ — $ 7 $ 7 $ — Tech & innovation — 1 1 — Other commercial and industrial 1 23 24 — CRE - owner occupied 10 2 12 — Hotel franchise finance — 10 10 — Other CRE - non-owner occupied 5 3 8 — Residential — 19 19 — Residential - EBO — — — 582 Construction and land development 4 — 4 — Total $ 20 $ 65 $ 85 $ 582 Loans contractually delinquent by 90 days or more and still accruing totaled $582 million at December 31, 2022 and consisted of government guaranteed EBO residential loans. The reduction in interest income associated with loans on nonaccrual status was approximately $4.5 million and $1.3 million for the three months ended September 30, 2023 and 2022, respectively, and $8.1 million and $3.6 million for the nine months ended September 30, 2023 and 2022, respectively. The following table presents an aging analysis of past due loans by loan portfolio segment: September 30, 2023 Current 30-59 Days 60-89 Days Over 90 days Total Total (in millions) Warehouse lending $ 6,439 $ — $ — $ — $ — $ 6,439 Municipal & nonprofit 1,474 — — — — 1,474 Tech & innovation 2,254 — — — — 2,254 Equity fund resources 1,034 — — — — 1,034 Other commercial and industrial 7,317 — — — — 7,317 CRE - owner occupied 1,622 — 2 — 2 1,624 Hotel franchise finance 3,837 — — — — 3,837 Other CRE - non-owner occupied 5,923 29 — — 29 5,952 Residential 13,216 68 17 — 85 13,301 Residential - EBO 643 158 103 439 700 1,343 Construction and land development 4,579 54 19 — 73 4,652 Other 220 — — — — 220 Total loans $ 48,558 $ 309 $ 141 $ 439 $ 889 $ 49,447 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 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 As of and for the nine months ended September 30, 2023 2023 2022 2021 2020 2019 Prior (in millions) Warehouse lending Pass $ 594 $ 260 $ 4 $ 289 $ — $ — $ 5,290 $ 6,437 Special mention — — — — — — 2 2 Classified — — — — — — — — Total $ 594 $ 260 $ 4 $ 289 $ — $ — $ 5,292 $ 6,439 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Municipal & nonprofit Pass $ 14 $ 152 $ 192 $ 182 $ 69 $ 834 $ — $ 1,443 Special mention — 7 — — — 11 — 18 Classified — — — — 6 7 — 13 Total $ 14 $ 159 $ 192 $ 182 $ 75 $ 852 $ — $ 1,474 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Tech & innovation Pass $ 406 $ 683 $ 196 $ 58 $ 53 $ 1 $ 785 $ 2,182 Special mention 8 11 1 6 — — 17 43 Classified 14 7 2 3 — — 3 29 Total $ 428 $ 701 $ 199 $ 67 $ 53 $ 1 $ 805 $ 2,254 Current period gross charge-offs $ 2 $ — $ — $ — $ — $ — $ — $ 2 Equity fund resources Pass $ 280 $ 32 $ 47 $ 37 $ 2 $ — $ 636 $ 1,034 Special mention — — — — — — — — Classified — — — — — — — — Total $ 280 $ 32 $ 47 $ 37 $ 2 $ — $ 636 $ 1,034 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Other commercial and industrial Pass $ 1,555 $ 1,691 $ 668 $ 193 $ 100 $ 225 $ 2,625 $ 7,057 Special mention 94 53 2 — — — — 149 Classified 1 38 63 1 4 1 3 111 Total $ 1,650 $ 1,782 $ 733 $ 194 $ 104 $ 226 $ 2,628 $ 7,317 Current period gross charge-offs $ 1 $ 3 $ 10 $ 4 $ — $ — $ 1 $ 19 CRE - owner occupied Pass $ 93 $ 347 $ 330 $ 165 $ 136 $ 491 $ 36 $ 1,598 Special mention 4 4 — — 1 5 — 14 Classified — — 4 2 1 5 — 12 Total $ 97 $ 351 $ 334 $ 167 $ 138 $ 501 $ 36 $ 1,624 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Hotel franchise finance Pass $ 454 $ 1,531 $ 618 $ 95 $ 470 $ 173 $ 134 $ 3,475 Special mention 37 22 67 — — 68 — 194 Classified 46 9 20 26 43 24 — 168 Total $ 537 $ 1,562 $ 705 $ 121 $ 513 $ 265 $ 134 $ 3,837 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Term Loan Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Total As of and for the nine months ended September 30, 2023 2023 2022 2021 2020 2019 Prior (in millions) Other CRE - non-owner occupied Pass $ 1,370 $ 2,227 $ 739 $ 535 $ 186 $ 257 $ 246 $ 5,560 Special mention 16 42 72 71 29 — — 230 Classified 48 1 93 1 15 4 — 162 Total $ 1,434 $ 2,270 $ 904 $ 607 $ 230 $ 261 $ 246 $ 5,952 Current period gross charge-offs $ — $ — $ 5 $ — $ — $ — $ — $ 5 Residential Pass $ 277 $ 3,603 $ 8,022 $ 827 $ 275 $ 212 $ 23 $ 13,239 Special mention — — — — — — — — Classified — 21 32 3 3 3 — 62 Total $ 277 $ 3,624 $ 8,054 $ 830 $ 278 $ 215 $ 23 $ 13,301 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Residential - EBO Pass $ 1 $ 10 $ 239 $ 564 $ 268 $ 261 $ — $ 1,343 Special mention — — — — — — — — Classified — — — — — — — — Total $ 1 $ 10 $ 239 $ 564 $ 268 $ 261 $ — $ 1,343 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Construction and land development Pass $ 910 $ 1,985 $ 418 $ 69 $ — $ 1 $ 1,190 $ 4,573 Special mention — — 6 12 — — — 18 Classified — 19 — 42 — — — 61 Total $ 910 $ 2,004 $ 424 $ 123 $ — $ 1 $ 1,190 $ 4,652 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Other Pass $ 8 $ 14 $ 3 $ 13 $ 4 $ 66 $ 112 $ 220 Special mention — — — — — — — — Classified — — — — — — — — Total $ 8 $ 14 $ 3 $ 13 $ 4 $ 66 $ 112 $ 220 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Total by Risk Category Pass $ 5,962 $ 12,535 $ 11,476 $ 3,027 $ 1,563 $ 2,521 $ 11,077 $ 48,161 Special mention 159 139 148 89 30 84 19 668 Classified 109 95 214 78 72 44 6 618 Total $ 6,230 $ 12,769 $ 11,838 $ 3,194 $ 1,665 $ 2,649 $ 11,102 $ 49,447 Current period gross charge-offs $ 3 $ 3 $ 15 $ 4 $ — $ — $ 1 $ 26 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 basis of loans HFI that were modified during the period by loan portfolio segment: Amortized Cost Basis at September 30, 2023 Payment Delay and Term Extension Term Extension Payment Delay Total % of Total Class of Financing Receivable Three Months Ended (dollars in millions) Tech & innovation $ — $ — $ 7 $ 7 0.3 % Other commercial and industrial — 1 12 13 0.2 CRE - owner occupied — 3 — 3 0.2 Hotel franchise finance — 20 — 20 0.5 Other CRE - non-owner occupied — 20 — 20 0.3 Total $ — $ 44 $ 19 $ 63 0.1 % Amortized Cost Basis at September 30, 2023 Payment Delay and Term Extension Term Extension Payment Delay Total % of Total Class of Financing Receivable Nine Months Ended (dollars in millions) Tech & innovation $ 2 $ — $ 7 $ 9 0.4 % Other commercial and industrial — 24 12 36 0.5 CRE - owner occupied — 3 — 3 0.2 Hotel franchise finance — 46 — 46 1.2 Other CRE - non-owner occupied — 48 — 48 0.8 Residential — — 1 1 0.0 Total $ 2 $ 121 $ 20 $ 143 0.3 % The performance of these modified loans is monitored for 12 months following the modification. As of September 30, 2023, modified loans on nonaccrual status totaled $36 million and the remaining $107 million were current with contractual payments. In the normal course of business, the Company also modifies EBO loans, which are delinquent FHA, VA, or USDA insured or guaranteed loans repurchased under the terms of the GNMA MBS program and can be repooled or resold when loans are brought current. During the three and nine months ended September 30, 2023, the Company completed modifications of EBO loans with an amortized cost of $84 million and $176 million, respectively. These modifications were largely payment delays and term extensions, or both. Troubled Debt Restructurings Prior to the adoption of ASU 2022-02, the Company accounted for a modification to the contractual terms of a loan that resulted in granting a concession to a borrower experiencing financial difficulties as a TDR. The loan terms that were modified or restructured due to a borrower’s financial situation included, but were not limited to, a reduction in the stated interest rate, an extension of the maturity or renewal of the loan at an interest rate below current market, a reduction in the face amount of the debt, a reduction in the accrued interest, or deferral of interest payments. The majority of the Company's modifications were extensions in terms or deferral of payments which resulted in no lost principal or interest. Consistent with regulatory guidance, a TDR loan that was subsequently modified in another restructuring agreement but had shown sustained performance and classification as a TDR, was removed from TDR status provided that the modified terms were market-based at the time of modification. 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 As of December 31, 2022, the ACL on TDR loans totaled $4 million and there were no outstanding commitments on TDR loans. During the three months ended September 30, 2022, the Company had two new TDR loans with a recorded investment of $14 million. During the nine months ended September 30, 2022, the Company had four new TDR loans with a recorded investment of $17 million. No principal amounts were forgiven and there were no waived fees or other expenses resulting from these TDRs. During the three and nine months ended September 30, 2022, there were no loans for which there was a payment default within 12 months following the modification. Collateral-Dependent Loans The following table presents the amortized cost basis of collateral-dependent loans by loan portfolio segment: September 30, 2023 December 31, 2022 Real Estate Collateral Other Collateral Total Real Estate Collateral Other Collateral Total (in millions) Municipal & nonprofit $ — $ 12 $ 12 $ — $ 7 $ 7 Tech & innovation — — — — 6 6 Other commercial and industrial — 8 8 — 30 30 CRE - owner occupied 6 — 6 42 — 42 Hotel franchise finance 125 — 125 186 — 186 Other CRE - non-owner occupied 160 — 160 27 — 27 Construction and land development 61 — 61 4 — 4 Total $ 352 $ 20 $ 372 $ 259 $ 43 $ 302 The Company did not identify any significant changes in the extent to which collateral secures its collateral dependent loans, whether in the form of general deterioration or from other factors during the period ended September 30, 2023. Allowance for Credit Losses The ACL consists of the ACL on funded loans HFI and an ACL on unfunded loan commitments. The ACL on HTM securities is estimated separately from loans, see "Note 2. Investment Securities" of these Notes to Unaudited Consolidated Financial Statements for further discussion. Management considers the level of ACL to be a reasonable and supportable estimate of expected credit losses inherent within the Company's HFI loan portfolio as of September 30, 2023. 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 September 30, 2023 Balance, Provision for (Recovery of) Credit Losses Charge-offs Recoveries Balance, (in millions) Warehouse lending $ 5.2 $ (0.5) $ — $ — $ 4.7 Municipal & nonprofit 16.5 0.2 — — 16.7 Tech & innovation 33.6 (1.6) — — 32.0 Equity fund resources 1.7 — — — 1.7 Other commercial and industrial 51.8 22.8 5.4 (0.3) 69.5 CRE - owner occupied 8.0 (0.3) — — 7.7 Hotel franchise finance 45.7 (5.1) — — 40.6 Other CRE - non-owner occupied 90.1 8.6 3.0 — 95.7 Residential 33.9 (7.9) — (0.1) 26.1 Residential - EBO — — — — — Construction and land development 31.7 (2.6) — — 29.1 Other 2.9 0.7 0.1 (0.1) 3.6 Total $ 321.1 $ 14.3 $ 8.5 $ (0.5) $ 327.4 Nine Months Ended September 30, 2023 Balance, Provision for (Recovery of) Credit Losses Charge-offs Recoveries Balance, (in millions) Warehouse lending $ 8.4 $ (3.7) $ — $ — $ 4.7 Municipal & nonprofit 15.9 0.8 — — 16.7 Tech & innovation 30.8 3.0 1.8 — 32.0 Equity fund resources 6.4 (4.7) — — 1.7 Other commercial and industrial 85.9 (2.0) 18.7 (4.3) 69.5 CRE - owner occupied 7.1 0.6 — — 7.7 Hotel franchise finance 46.9 (6.3) — — 40.6 Other CRE - non-owner occupied 47.4 53.5 5.2 — 95.7 Residential 30.4 (4.4) — (0.1) 26.1 Residential - EBO — — — — — Construction and land development 27.4 1.7 — — 29.1 Other 3.1 0.6 0.2 (0.1) 3.6 Total $ 309.7 $ 39.1 $ 25.9 $ (4.5) $ 327.4 Three Months Ended September 30, 2022 Balance, Provision for (Recovery of) Credit Losses Charge-offs Recoveries Balance, (in millions) Warehouse lending $ 3.7 $ 0.7 $ — $ — $ 4.4 Municipal & nonprofit 13.6 1.6 — — 15.2 Tech & innovation 25.4 (0.2) — — 25.2 Equity fund resources 14.0 (3.1) — — 10.9 Other commercial and industrial 119.2 (14.7) 2.1 (3.8) 106.2 CRE - owner occupied 7.5 (0.8) — — 6.7 Hotel franchise finance 33.8 17.2 — — 51.0 Other CRE - non-owner occupied 22.1 11.2 — (0.1) 33.4 Residential 18.8 6.8 — — 25.6 Construction and land development 12.2 10.1 — (0.1) 22.4 Other 2.9 0.2 — — 3.1 Total $ 273.2 $ 29.0 $ 2.1 $ (4.0) $ 304.1 Nine Months Ended September 30, 2022 Balance, Provision for (Recovery of) Credit Losses Charge-offs Recoveries Balance, (in millions) Warehouse lending $ 3.0 $ 1.4 $ — $ — $ 4.4 Municipal & nonprofit 13.7 1.5 — — 15.2 Tech & innovation 25.7 (2.5) — (2.0) 25.2 Equity fund resources 9.6 1.3 — — 10.9 Other commercial and industrial 103.6 4.7 7.0 (4.9) 106.2 CRE - owner occupied 10.6 (4.0) — (0.1) 6.7 Hotel franchise finance 41.5 9.5 — — 51.0 Other CRE - non-owner occupied 16.9 16.4 — (0.1) 33.4 Residential 12.5 13.1 — — 25.6 Construction and land development 12.5 9.8 — (0.1) 22.4 Other 2.9 0.1 0.1 (0.2) 3.1 Total $ 252.5 $ 51.3 $ 7.1 $ (7.4) $ 304.1 Accrued interest receivable of $290 million and $304 million at September 30, 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 $5 million and $9 million, as of September 30, 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 Sheet. The below table reflects the activity in the ACL on unfunded loan commitments: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Balance, beginning of period $ 41.1 $ 53.8 $ 47.0 $ 37.6 Provision for credit losses (3.2) (1.7) (9.1) 14.5 Balance, end of period $ 37.9 $ 52.1 $ 37.9 $ 52.1 The following tables disaggregate the Company's ACL on funded loans HFI and loan balances by measurement methodology: September 30, 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 $ 6,439 $ — $ 6,439 $ 4.7 $ — $ 4.7 Municipal & nonprofit 1,461 13 1,474 13.2 3.5 16.7 Tech & innovation 2,225 29 2,254 27.9 4.1 32.0 Equity fund resources 1,034 — 1,034 1.7 — 1.7 Other commercial and industrial 7,209 108 7,317 63.3 6.2 69.5 CRE - owner occupied 1,615 9 1,624 7.7 — 7.7 Hotel franchise finance 3,669 168 3,837 40.6 — 40.6 Other CRE - non-owner occupied 5,791 161 5,952 95.7 — 95.7 Residential 13,301 — 13,301 26.1 — 26.1 Residential EBO 1,343 — 1,343 — — — Construction and land development 4,592 60 4,652 29.1 — 29.1 Other 220 — 220 3.6 — 3.6 Total $ 48,899 $ 548 $ 49,447 $ 313.6 $ 13.8 $ 327.4 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 Loan Purchases and Sales During the three and nine months ended September 30, 2023, loan purchases totaled $329 million and $1.4 billion, respectively, which consisted primarily of commercial and industrial and residential loans. Loan purchases during the three and nine months ended September 30, 2022 totaled $2.7 billion and $8.2 billion, respectively, which consisted primarily of residential loans. There were no loans purchased with more-than-insignificant deterioration in credit quality during the three and nine months ended September 30, 2023 and 2022. The Company transferred $6.0 billion of loans HFI (primarily commercial and industrial loans) to HFS as of March 31, 2023. The loans were transferred to HFS net of a fair value loss adjustment of $123.5 million, or a carrying value of $5.9 billion. From March 31, 2023 through September 30, 2023, the Company transferred an additional $0.7 billion from loans HFI to HFS. The Company completed loan dispositions from this HFS loan pool totaling $4.3 billion through September 30, 2023 and transferred all remaining loans in this pool back to HFI at the end of the period as a result of a change in management's intentions.

Mortgage Servicing Rights

Mortgage Servicing Rights	9 Months Ended
	Sep. 30, 2023
Transfers and Servicing [Abstract]
Mortgage Servicing Rights	5. MORTGAGE SERVICING RIGHTS The following table presents the changes in fair value of the Company's MSR portfolio related to its mortgage banking business and other information related to its servicing portfolio: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Balance, beginning of period $ 1,007 $ 826 $ 1,148 $ 698 Additions from loans sold with servicing rights retained 266 180 653 578 Carrying value of MSRs sold (112) — (611) (350) Change in fair value 98 63 114 206 Mark to market adjustments — — 4 — Realization of cash flows (26) (25) (75) (88) Balance, end of period $ 1,233 $ 1,044 $ 1,233 $ 1,044 Unpaid principal balance of mortgage loans serviced for others $ 70,261 $ 62,841 Changes in the fair value of MSRs are recorded as Net loan servicing revenue in the Consolidated Income Statement. Due to the regulatory capital impact of MSRs on capital ratios, the Company sells certain MSRs and related servicing advances in the normal course of business. The Company may also sell excess servicing spread related to certain mortgage loans serviced by the Company. During the three months ended September 30, 2023, MSR sales had an aggregate net sales price of $110 million and the UPB of loans underlying these sales totaled $16.0 billion, most of which related to a sale of excess servicing spread. During the nine months ended September 30, 2023, MSR sales had an aggregate net sales price of $611 million and the UPB of loans underlying these sales totaled $44.3 billion. During the three months ended September 30, 2022, the Company did not sell any MSRs. During the nine months ended September 30, 2022, MSR sales had an aggregate net sales price of $350 million and the UPB of loans underlying these sales totaled $24.1 billion. As of September 30, 2023 and December 31, 2022, the Company had a remaining receivable balance of $34 million and $39 million, respectively, related to holdbacks on MSR sales for servicing transfers, which are recorded in Other assets on the Consolidated Balance Sheet. The Company receives loan servicing fees, net of subservicing costs, based on the UPB of the underlying loans. Loan servicing fees are collected from payments made by borrowers. The Company may receive other remuneration from rights to various borrower contracted fees, such as late charges, collateral reconveyance charges, and non-sufficient funds fees. Contractually specified servicing fees, late fees, and ancillary income associated with the Company's MSR portfolio totaled $56.4 million and $173.3 million for the three and nine months ended September 30, 2023, respectively, and $48.9 million and $140.7 million for the three and nine months ended September 30, 2022, respectively, which are recorded as Net loan servicing revenue in the Consolidated Income Statement. In accordance with its contractual loan servicing obligations, the Company is required to advance funds to or on behalf of investors when borrowers do not make payments. The Company advances property taxes and insurance premiums for borrowers who have insufficient funds in escrow accounts, plus any other costs to preserve real estate properties. The Company may also advance funds to maintain, repair, and market foreclosed real estate properties. The Company is entitled to recover all or a portion of the advances from borrowers of reinstated and performing loans, from the proceeds of liquidated properties or from the government agency or GSE guarantor of charged-off loans. Servicing advances are charged-off when they are deemed to be uncollectible. As of September 30, 2023 and December 31, 2022, net servicing advances totaled $51 million and $102 million, respectively, which are recorded as Other assets on the Consolidated Balance Sheet. The following table presents the effect of hypothetical changes in the fair value of MSRs caused by assumed immediate changes in interest rates, discount rates, and prepayment speeds that are used to determine fair value: September 30, 2023 (in millions) Fair value of mortgage servicing rights $ 1,233 Increase (decrease) in fair value resulting from: Interest rate change of 50 basis points Adverse change (59) Favorable change 52 Discount rate change of 50 basis points Increase (25) Decrease 26 Conditional prepayment rate change of 1% Increase (29) Decrease 32 Cost to service change of 10% Increase (15) Decrease 15

Deposits

Deposits	9 Months Ended
	Sep. 30, 2023
Other Liabilities Disclosure [Abstract]
Deposits	6. DEPOSITS The table below summarizes deposits by type: September 30, 2023 December 31, 2022 (in millions) Non-interest-bearing demand deposits $ 17,991 $ 19,691 Interest-bearing transaction accounts 12,843 9,507 Savings and money market accounts 14,672 19,397 Time certificates of deposit ($250,000 or more) 6,690 3,815 Other time deposits 2,091 1,234 Total deposits $ 54,287 $ 53,644 A summary of the contractual maturities for all time deposits as of September 30, 2023 is as follows: December 31, (in millions) 2023 $ 3,311 2024 4,870 2025 594 2026 5 2027 1 Total $ 8,781 Brokered deposits provide an additional source of deposits and are placed with the Bank through third-party brokers. At September 30, 2023 and December 31, 2022, the Company held wholesale brokered deposits of $6.5 billion and $4.8 billion, respectively, excluding reciprocal deposits. In addition, WAB is a participant in the IntraFi Network, a network that offers deposit placement services such as CDARS and ICS, and other reciprocal deposit networks which offer products that qualify large deposits for FDIC insurance. At September 30, 2023, the Company had $12.5 billion of reciprocal deposits, compared to $2.8 billion at December 31, 2022. These reciprocal deposit structures offer protection to depositors by fully insuring deposits with other network banks and also provides the Company with funding stability and drove the increase in the Company’s insured deposit ratio from December 31, 2022. In addition, deposits for which the Company provides account holders with earnings credits or referral fees totaled $17.1 billion and $12.9 billion at September 30, 2023 and December 31, 2022, respectively. The Company incurred $123.7 million and $17.3 million in deposit related costs on these deposits during the three months ended September 30, 2023 and 2022, respectively. The Company incurred $297.1 million and $26.0 million in deposit related costs on these deposits during the nine months ended September 30, 2023 and 2022, respectively. These costs are reported as Deposit costs in non-interest expense. The increase in these costs from the prior year is due to an increase in average earnings credit rates as well as an increase in average deposit balances eligible for earnings credits or referral fees.

Other Borrowings

Other Borrowings	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Other Borrowings	7. OTHER BORROWINGS The following table summarizes the Company’s borrowings by type: September 30, 2023 December 31, 2022 (in millions) Short-Term: Federal funds purchased $ 122 $ 640 BTFP advances 1,300 — FHLB advances 4,700 4,300 Warehouse borrowings 1,334 — Repurchase agreements 490 27 Secured borrowings 36 25 Total short-term borrowings $ 7,982 $ 4,992 Long-Term: AmeriHome senior notes, net of fair value adjustment $ 313 $ 315 Credit linked notes, net 450 992 Total long-term borrowings $ 763 $ 1,307 Total other borrowings $ 8,745 $ 6,299 Short-Term Borrowings Federal Funds Lines of Credit The Company maintains overnight federal fund lines of credit totaling $1.4 billion as of September 30, 2023, which have rates comparable to the federal funds effective rate plus 0.10% to 0.20%. FHLB and FRB Advances The Company also maintains secured overnight lines of credit with the FHLB and the FRB. The Company’s borrowing capacity is determined based on collateral pledged, generally consisting of investment securities and loans, at the time of the borrowing. As of September 30, 2023 and December 31, 2022, the Company had additional available credit with the FHLB of approximately $7.6 billion and $6.8 billion respectively. The weighted average rate on FHLB advances was 5.77% and 4.70% as of September 30, 2023 and December 31, 2022, respectively. In March 2023, the FRB established the BTFP which offers loans of up to one year in length to banks, savings associations, credit unions, and other eligible depository institutions pledging U.S. Treasuries, agency debt and mortgage-backed securities, and other qualifying assets as collateral valued at par. The rate for BTFP advances is the one-year overnight index swap rate plus 10 basis points and is fixed for the term of the advance. The weighted average rate on BTFP advances was 4.76% as of September 30, 2023. Other available credit with the FRB totaled $14.8 billion and $5.2 billion as of September 30, 2023 and December 31, 2022, respectively. Warehouse Borrowings Warehouse borrowing lines of credit are used to finance the acquisition of loans through the use of repurchase agreements. Repurchase agreements operate as financings under which the Company transfers loans to secure these borrowings. The borrowing amounts are based on the attributes of the collateralized loans and are defined in the repurchase agreement of each warehouse lender. The Company retains beneficial ownership of the transferred loans and will receive the loans from the lender upon full repayment of the borrowing. The repurchase agreements may require the Company to transfer additional assets to the lender in the event the estimated fair value of the existing transferred loans declines. As of September 30, 2023, the Company had access to approximately $3.0 billion in uncommitted warehouse funding, of which $1.3 billion was drawn at a weighted average borrowing rate of 6.91%. There were no warehouse borrowings outstanding at December 31, 2022. Repurchase Agreements Other repurchase facilities include CLO securities, EBO loan, and customer repurchase agreements. There were no CLO securities repurchase agreements outstanding at September 30, 2023 or December 31, 2022. The balance and weighted average rate of EBO loan repurchase agreements was $481 million, net of issuance costs of $2 million and 7.23%, respectively, as of September 30, 2023. These repurchase agreements are collateralized with $1.3 billion of EBO loans. There were no EBO loan backed repurchase agreements at December 31, 2022. The balance of customer repurchase agreements was $9 million and $27 million as of September 30, 2023 and December 31, 2022, respectively, and the weighted average rate was 0.22% and 0.15% as of September 30, 2023 and December 31, 2022, respectively. Secured Borrowings Secured borrowings consist of transfers of loans HFS not qualifying for sales accounting treatment. The weighted average interest rate on secured borrowings was 6.31% and 6.39% as of September 30, 2023 and December 31, 2022, respectively. Long-Term Borrowings AmeriHome Senior Notes Prior to the Company's acquisition of AmeriHome, in October 2020, AmeriHome issued senior notes with an aggregate principal amount of $300 million, maturing on October 26, 2028. The senior notes accrue interest at a rate of 6.50% per annum, paid semiannually. The senior notes contain provisions that allow for redemption of up to 40% of the original aggregate principal amount of the notes during the first three years after issuance at a price equal to 106.50%, plus accrued and unpaid interest. After this three-year period, AmeriHome may redeem some or all of the senior notes at a price equal to 103.25% of the outstanding principal amount, plus accrued and unpaid interest. In 2025, the redemption price of these senior notes declines to 100% of the outstanding principal balance. The carrying amount of the senior notes includes a fair value adjustment (premium) of $19 million recognized as of the acquisition date that is being amortized over the term of the notes. Credit Linked Notes The Company entered into credit linked note transactions that effectively transferred the risk of first losses on certain pools of the Company’s warehouse and equity fund resource loans to the purchasers of these notes. In the event of a failure to pay by the relevant obligor, insolvency of the relevant obligor, or restructuring of such loans that results in a loss on a loan that is included in any of the reference pools, the principal balance of the notes will be reduced to the extent of such loss and a gain on recovery of credit guarantees will be recognized within non-interest income in the Consolidated Income Statement. The purchasers of the notes have the option to acquire the underlying reference loan in the event of obligor default. There have been no historical losses on the warehouse lines of credit and equity fund resource loans. The Company also entered into credit linked note transactions that effectively transfer the risk of first losses on reference pools of the Company's loans purchased under its residential mortgage purchase program to the purchasers of the notes. The principal and interest payable on these notes may be reduced by a portion of the Company's loss on such loans if one of the following occurs with respect to a covered loan: (i) realized losses incurred by the Company on a loan following a liquidation of the loan or certain other events, or (ii) a modification of the loan resulting in a reduction in payments. The aggregate losses, if any, for each payment date will be allocated to reduce the class principal amount and (for modifications) the current interest of the notes in reverse order of class priority. Losses on residential mortgages have not generally been significant. The Company's outstanding credit linked note issuances are detailed in the tables below: September 30, 2023 Description Issuance Date Maturity Date Interest Rate Principal Debt Issuance Costs (in millions) Residential mortgage loans (1) December 12, 2022 October 25, 2052 SOFR + 7.80% $ 91 $ 2 Residential mortgage loans (2) June 30, 2022 April 25, 2052 SOFR + 6.00% 181 3 Residential mortgage loans (4) December 29, 2021 July 25, 2059 SOFR + 4.67% 194 3 Total $ 466 $ 8 December 31, 2022 Description Issuance Date Maturity Date Interest Rate Principal Debt Issuance Costs (in millions) Residential mortgage loans (1) December 12, 2022 October 25, 2052 SOFR + 7.80% $ 95 $ 2 Residential mortgage loans (2) June 30, 2022 April 25, 2052 SOFR + 6.00% 189 3 Equity fund resource loans (3) June 23, 2022 June 30, 2028 SOFR + 6.75% 300 4 Residential mortgage loans (4) December 29, 2021 July 25, 2059 SOFR + 4.67% 202 3 Warehouse loans (5) June 28, 2021 December 30, 2024 LIBOR + 5.50% 242 2 Total $ 1,028 $ 14 (1) There are multiple classes of these notes, each with an interest rate of SOFR plus a spread that ranges from 2.25% to 11.00% (or, a weighted average spread of 7.80%) on a reference pool balance of $1.8 billion as of September 30, 2023 and December 31, 2022. (2) There are multiple classes of these notes, each with an interest rate of SOFR plus a spread that ranges from 2.25% to 15.00% (or, a weighted average spread of 6.00%) on a reference pool balance of $3.6 billion and $3.8 billion as of September 30, 2023 and December 31, 2022, respectively. (3) These notes had a reference pool balance of $1.6 billion as of December 31, 2022. (4) There are six classes of these notes, each with an interest rate of SOFR plus a spread that ranges from 3.15% to 8.50% (or, a weighted average spread of 4.67%) on a reference pool balance of $3.8 billion and $4.0 billion as of September 30, 2023 and December 31, 2022, respectively. (5) These notes had a reference pool balance of $689 million as of December 31, 2022.

Qualifying Debt

Qualifying Debt	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Qualifying Debt	8. QUALIFYING DEBT Subordinated Debt The Company's subordinated debt issuances are detailed in the tables below: September 30, 2023 Description Issuance Date Maturity Date Interest Rate Principal Debt Issuance Costs (in millions) WAL fixed-to-variable-rate (1) June 2021 June 15, 2031 3.00 % $ 600 $ 7 WAB fixed-to-variable-rate (2) May 2020 June 1, 2030 5.25 % 225 1 Total $ 825 $ 8 December 31, 2022 Description Issuance Date Maturity Date Interest Rate Principal Debt Issuance Costs (in millions) WAL fixed-to-variable-rate (1) June 2021 June 15, 2031 3.00 % $ 600 $ 7 WAB fixed-to-variable-rate (2) May 2020 June 1, 2030 5.25 % 225 1 Total $ 825 $ 8 (1) Notes are redeemable, in whole or in part, beginning on June 15, 2026 at their principal amount plus accrued and unpaid interest and has a fixed interest rate of 3.00%. The notes also convert to a variable rate of three-month SOFR plus 225 basis points on this date. (2) Debt is redeemable, in whole or in part, on or after June 1, 2025 at its principal amount plus accrued and unpaid interest and has a fixed interest rate of 5.25% through June 1, 2025 and then converts to a variable rate per annum equal to three-month SOFR plus 512 basis points. The carrying value of all subordinated debt issuances totaled $817 million at September 30, 2023 and December 31, 2022. Junior Subordinated Debt The Company has formed or acquired through acquisition eight statutory business trusts, which exist for the exclusive purpose of issuing Cumulative Trust Preferred Securities. With the exception of debt issued by Bridge Capital Trust I and Bridge Capital Trust II, junior subordinated debt is recorded at fair value at each reporting date due to the FVO election made by the Company under ASC 825. The Company did not make the FVO election for the junior subordinated debt acquired in the Bridge acquisition. Accordingly, the carrying value of these trusts does not reflect the current fair value of the debt and includes a fair market value adjustment established at acquisition that is being accreted over the remaining life of the trusts. The carrying value of junior subordinated debt was $73 million and $76 million as of September 30, 2023 and December 31, 2022, respectively, with maturity dates ranging from 2033 through 2037. The weighted average interest rate of all junior subordinated debt as of September 30, 2023 was 8.00%, which is equal to three-month Term SOFR plus an adjustment of 0.26% and the contractual spread of 2.34%, compared to a weighted average interest rate of 7.11% at December 31, 2022, which was based on three-month LIBOR. In the event of certain changes or amendments to regulatory requirements or federal tax rules, the debt is redeemable in whole. The obligations under these instruments are fully and unconditionally guaranteed by the Company and rank subordinate and junior in right of payment to all other liabilities of the Company. Based on guidance issued by the FRB, the Company's securities continue to qualify as Tier 1 Capital.

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2023
Stockholders' Equity Note [Abstract]
Stockholders' Equity	9. STOCKHOLDERS' EQUITY Stock-Based Compensation Restricted Stock Awards Restricted stock awards granted to employees generally vest over a 3-year period and stock grants made to non-employee WAL directors generally vest over six months. The Company estimates the compensation cost for stock grants based upon the grant date fair value. Stock compensation expense is recognized on a straight-line basis over the requisite service period for the entire award. The aggregate grant date fair value for the restricted stock awards granted during the three and nine months ended September 30, 2023 was $0.3 million and $45.5 million, respectively. Stock compensation expense related to restricted stock awards granted to employees is included in Salaries and employee benefits in the Consolidated Income Statement. For restricted stock awards granted to WAL directors, the related stock compensation expense is included in Legal, professional, and directors' fees. For the three and nine months ended September 30, 2023, the Company recognized $7.5 million and $25.1 million, respectively, in stock-based compensation expense related to employee and WAL director stock grants, compared to $7.1 million and $21.8 million for the three and nine months ended September 30, 2022, respectively. Performance Stock Units The Company grants performance stock units to members of its executive management that do not vest unless the Company achieves a specified cumulative EPS target and a TSR performance measure over a three-year performance period. The number of shares issued will vary based on the cumulative EPS target and relative TSR performance factor that is achieved. The Company estimates the cost of performance stock units based upon the grant date fair value and expected vesting percentage over the three-year performance period. During the three and nine months ended September 30, 2023, the Company recognized stock-based compensation expense of $1.4 million and $0.3 million (which includes a $2.5 million net reversal of expense recognized in the first quarter 2023 due to revised performance expectations), compared to $2.3 million and $8.5 million for such units during the three and nine months ended September 30, 2022, respectively. The three-year performance period for the 2020 grant ended on December 31, 2022, and based on the Company's cumulative EPS and TSR performance measure for the performance period, these shares vested at 180% of the target award under the terms of the grant. As a result, 157,784 shares became fully vested and distributed to executive management in the first quarter of 2023. The three-year performance period for the 2019 grant ended on December 31, 2021, and the Company's cumulative EPS and TSR performance measure for the performance period exceeded the level required for a maximum award under the terms of the grant. As a result, 203,646 shares became fully vested and were distributed to executive management in the first quarter of 2022. Preferred Stock The Company has 12,000,000 depositary shares outstanding, each representing a 1/400th ownership interest in a share of the Company’s 4.250% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Shares, Series A, par value $0.0001 per share, with a liquidation preference of $25 per depositary share (equivalent to $10,000 per share of Series A preferred stock). During the three and nine months ended September 30, 2023, the Company declared and paid a quarterly cash dividend of $0.27 per depositary share, for a total dividend payment to preferred stockholders of $3.2 million and $9.6 million, respectively. During the three and nine months ended September 30, 2022, the Company declared and paid a quarterly cash dividend of $0.27 per depositary share, for a total dividend payment to preferred stockholders of $3.2 million and $9.6 million, respectively. Common Stock Issuances Pursuant to ATM Distribution Agreement During the three and nine months ended September 30, 2022, the Company sold 0.6 million and 1.9 million shares, respectively, under the ATM program at a weighted-average selling price of $78.27 and $83.89 per share for gross proceeds of $50.3 million and $158.7 million, respectively. Sales under the ATM program were being made pursuant to a prospectus dated May 14, 2021 and prospectus supplements filed with the SEC in an offering of shares from the Company's shelf registration statement on Form S-3 (No. 333-256120). Total related offering costs for the three and nine months ended September 30, 2022 were $0.3 million and $1.0 million, respectively, substantially all of which related to compensation costs paid to the distribution agents. There were no sales under the ATM program during the three and nine months ended September 30, 2023 and as of September 30, 2023, the remaining number of shares that can be sold under this agreement totaled 1,107,769. Cash Dividend on Common Shares During the three and nine months ended September 30, 2023, the Company declared and paid a quarterly cash dividend of $0.36 per share, for a total dividend payment to stockholders of $39.4 million and $118.2 million, respectively. During the three and nine months ended September 30, 2022, the Company declared and paid a quarterly cash dividend of $0.35 per share for the first two quarters of the year and increased the quarterly cash dividend to $0.36 per share in the third quarter, for a total dividend payment to stockholders of $39.0 million and $114.2 million, respectively. Treasury Shares

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2023
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	10. ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) The following table summarizes the changes in accumulated other comprehensive income (loss) by component, net of tax, for the periods indicated: Three Months Ended September 30, 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, June 30, 2023 $ (618.3) $ (0.3) $ 6.9 $ 1.2 $ (610.5) Other comprehensive loss before reclassifications (120.2) — (1.2) — (121.4) Amounts reclassified from AOCI (0.4) — — — (0.4) Net current-period other comprehensive loss (120.6) — (1.2) — (121.8) Balance, September 30, 2023 $ (738.9) $ (0.3) $ 5.7 $ 1.2 $ (732.3) Balance, June 30, 2022 $ (521.1) $ (0.3) $ 3.5 $ — $ (517.9) Other comprehensive (loss) income before reclassifications (219.9) — 1.6 — (218.3) Amounts reclassified from AOCI — — — — — Net current-period other comprehensive (loss) income (219.9) — 1.6 — (218.3) Balance, September 30, 2022 $ (741.0) $ (0.3) $ 5.1 $ — $ (736.2) Nine Months Ended September 30, 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 (loss) income before reclassifications (94.3) — 2.7 1.2 (90.4) Amounts reclassified from AOCI 19.1 — — — 19.1 Net current-period other comprehensive (loss) income (75.2) — 2.7 1.2 (71.3) Balance, September 30, 2023 $ (738.9) $ (0.3) $ 5.7 $ 1.2 $ (732.3) Balance, December 31, 2021 $ 16.7 $ (0.3) $ (0.7) $ — $ 15.7 Other comprehensive (loss) income before reclassifications (752.3) — 5.8 — (746.5) Amounts reclassified from AOCI (5.4) — — — (5.4) Net current-period other comprehensive (loss) income (757.7) — 5.8 — (751.9) Balance, September 30, 2022 $ (741.0) $ (0.3) $ 5.1 $ — $ (736.2)

Derivatives and Hedging Activit

Derivatives and Hedging Activities	9 Months Ended
	Sep. 30, 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 Sheet, 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, which reduces asset sensitivity and volatility of net interest income and EVE to interest rate fluctuations, such that interest rate risk falls within Board approved limits. 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 were based on LIBOR and were converted to SOFR plus a spread adjustment upon the discontinuation of LIBOR in June 2023. The Company also has pay fixed/receive variable interest rate swaps, designated as fair value hedges using the portfolio 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 portfolio layer hedges provide the Company the ability to execute a fair value hedge of the interest rate risk associated with a portfolio of similar prepayable assets. Under these interest rate swap contracts, the Company receives a variable rate based on SOFR and pays a fixed rate on the outstanding notional amount. The Company also had pay fixed/receive variable interest rate swaps, designated as fair value hedges using the last-of-layer method. Upon termination of these last-of-layer hedges in 2022, the cumulative basis adjustment on these hedges was allocated across the remaining loan pool and is being amortized over the remaining term. At September 30, 2023, the remaining cumulative basis adjustment on the terminated last-of-layer hedges totaled $12 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, interest rate futures and interest rate swaps. Fair Value Hedges As of September 30, 2023 and December 31, 2022, the following amounts are reflected on the Consolidated Balance Sheet related to cumulative basis adjustments for outstanding fair value hedges: September 30, 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 (2) $ 3,863 $ 128 $ 447 $ 17 (1) Included in the carrying value of the hedged assets/(liabilities). (2) As of September 30, 2023, included portfolio layer method derivative instruments with $3.5 billion designated as the hedged amount (from a closed portfolio of prepayable fixed rate loans with a carrying value of $6.8 billion). The cumulative basis adjustment included in the carrying value of these hedged items totaled $98 million. For the Company's derivative instruments that are designated and qualify as fair value hedges, 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 period earnings. The loss or gain on the hedged item is recognized 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 September 30, 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 $ 76.5 $ (76.0) $ 27.5 $ (27.5) Nine Months Ended September 30, 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 $ 111.2 $ (110.7) $ 76.3 $ (76.2) 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 and $8.9 million in interest income related to the amortization of the cumulative basis adjustment on its discontinued last-of-layer hedges during the three and nine months ended September 30, 2023, respectively, and $3.0 million and $7.0 million for the three and nine months ended September 30, 2022, respectively. 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 September 30, 2023, December 31, 2022, and September 30, 2022. The change in the notional amounts of these derivatives from September 30, 2022 to September 30, 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. September 30, 2023 December 31, 2022 September 30, 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 contracts $ 3,899 $ 128 $ — $ 476 $ 18 $ — $ 483 $ 22 $ — Total $ 3,899 $ 128 $ — $ 476 $ 18 $ — $ 483 $ 22 $ — Derivatives not designated as hedging instruments (1): Foreign currency contracts $ 74 $ 1 $ — $ 250 $ 1 $ 9 $ 146 $ 2 $ 1 Forward purchase contracts 3,397 1 20 2,709 1 13 8,226 3 249 Forward sales contracts 6,256 42 1 4,985 16 8 11,792 380 6 Futures purchase contracts (2), (3) 150 — — — — — — — — Futures sales contracts (2), (3) 13,695 — — 8,706 — — 8,121 — — Interest rate lock commitments 1,761 3 6 1,459 5 3 1,918 3 31 Interest rate contracts 3,187 20 20 1,538 6 6 2,155 5 5 Risk participation agreements 44 — — 48 — — — — — Total $ 28,564 $ 67 $ 47 $ 19,695 $ 29 $ 39 $ 32,358 $ 393 $ 292 Margin 66 25 4 1 (100) (11) Total, including margin $ 28,564 $ 133 $ 72 $ 19,695 $ 33 $ 40 $ 32,358 $ 293 $ 281 (1) Relate to economic hedging arrangements. (2) The Company enters into futures purchase and sales contracts that are subject to daily remargining and almost all of which are based on three-month SOFR to hedge against its MSR valuation exposure. The notional amount on these contracts is substantial as these contracts have a short duration and are intended to cover the longer duration of MSR hedges. (3) The notional amounts previously reported for December 31, 2022 and September 30, 2022 have been adjusted to account for the impact of offsetting contracts. To close a futures contract prior to settlement, the Company purchases an offsetting future with the same terms as the original contract and these contracts no longer require settlement. 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 Sheet, as summarized in the table below: September 30, 2023 December 31, 2022 September 30, 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 $ 1 $ — $ 1 $ 1 $ — $ 1 $ 3 $ — $ 3 Forward sales contracts 42 — 42 13 — 13 360 — 360 Interest rate contracts 148 — 148 18 — 18 22 — 22 Margin 66 — 66 4 — 4 (100) — (100) Netting — (43) (43) — (17) (17) — (233) (233) $ 257 $ (43) $ 214 $ 36 $ (17) $ 19 $ 285 $ (233) $ 52 Liabilities Forward purchase contracts $ (20) $ — $ (20) $ (12) $ — $ (12) $ (242) $ — $ (242) Forward sales contracts (1) — (1) (8) — (8) (6) — (6) Margin (25) — (25) (1) — (1) 11 — 11 Netting — 43 43 — 17 17 — 233 233 $ (46) $ 43 $ (3) $ (21) $ 17 $ (4) $ (237) $ 233 $ (4) Derivatives not subject to master netting arrangements: Assets Foreign currency contracts $ 1 $ — $ 1 $ 1 $ — $ 1 $ 2 $ — $ 2 Forward sales contracts — — — 3 — 3 20 — 20 Interest rate lock commitments 3 — 3 5 — 5 3 — 3 Interest rate contracts — — — 6 — 6 5 — 5 $ 4 $ — $ 4 $ 15 $ — $ 15 $ 30 $ — $ 30 Liabilities Foreign currency contracts $ — $ — $ — $ (9) $ — $ (9) $ (1) $ — $ (1) Forward purchase contracts — — — (1) — (1) (7) — (7) Interest rate lock commitments (6) — (6) (3) — (3) (31) — (31) Interest rate contracts (20) — (20) (6) — (6) (5) — (5) $ (26) $ — $ (26) $ (19) $ — $ (19) $ (44) $ — $ (44) Total derivatives and margin Assets $ 261 $ (43) $ 218 $ 51 $ (17) $ 34 $ 315 $ (233) $ 82 Liabilities $ (72) $ 43 $ (29) $ (40) $ 17 $ (23) $ (281) $ 233 $ (48) The following table summarizes the net gain (loss) on derivatives included in income: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Net gain (loss) on loan origination and sale activities: Interest rate lock commitments $ (5.2) $ (39.3) $ (4.9) $ (36.9) Forward contracts 68.7 145.3 87.5 487.6 Interest rate swaps (8.4) (8.6) (11.8) (8.6) Other contracts (0.3) 1.6 1.5 (8.2) Total gain $ 54.8 $ 99.0 $ 72.3 $ 433.9 Net loan servicing revenue: Forward contracts $ (19.2) $ (18.0) $ (34.0) $ (60.9) Futures contracts (2.4) 2.4 12.3 (41.5) Interest rate swaps (82.4) (52.8) (100.0) (52.8) Total loss $ (104.0) $ (68.4) $ (121.7) $ (155.2) Counterparty Credit Risk

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Earnings Per Share	12. 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 and summarizes the weighted average common shares excluded from the diluted EPS calculation due to their antidilutive effect: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions, except per share amounts) Weighted average shares - basic 108.3 107.5 108.3 107.0 Dilutive effect of stock awards 0.2 0.4 0.1 0.4 Weighted average shares - diluted 108.5 107.9 108.4 107.4 Net income available to common stockholders $ 213.4 $ 260.8 $ 564.9 $ 754.7 Earnings per Common Share: Basic $ 1.97 $ 2.43 $ 5.22 $ 7.06 Diluted 1.97 2.42 5.21 7.03 Antidilutive restricted stock outstanding — — 0.1 —

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Income Taxes	13. INCOME TAXES The Company's effective tax rate was 22.1% and 19.9% for the three months ended September 30, 2023 and 2022, respectively. For the nine months ended September 30, 2023 and 2022, the Company's effective tax rate was 20.5% and 19.7%, respectively. The increase in the three-month and nine-month effective tax rate was primarily due to an increase in nondeductible discrete items. As of September 30, 2023, the net DTA balance totaled $365 million, an increase of $54 million from $311 million at December 31, 2022. This overall increase in the net DTA was primarily the result of a decrease in the fair market value of AFS securities and a decrease to MSR deferred tax liabilities. Although realization is not assured, the Company believes that the realization of the recognized deferred tax asset of $365 million at September 30, 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 September 30, 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. Investments in LIHTC and renewable energy totaled $545 million and $624 million as of September 30, 2023 and December 31, 2022, respectively. Unfunded LIHTC and renewable energy obligations are included in Other liabilities on the Consolidated Balance Sheet and totaled $332 million and $398 million as of September 30, 2023 and December 31, 2022, respectively. For the three months ended September 30, 2023 and 2022, $27.9 million and $16.8 million, respectively, of amortization related to LIHTC investments was recognized as a component of income tax expense. For the nine months ended September 30, 2023 and 2022, $66.9 million and $45.6 million, respectively, of amortization related to LIHTC investments was recognized as a component of income tax expense.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	14. COMMITMENTS AND CONTINGENCIES Unfunded Commitments and Letters of Credit The Company is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and letters of credit. They involve, to varying degrees, elements of credit risk in excess of amounts recognized on the Consolidated Balance Sheet. Lines of credit are obligations to lend money to a borrower. Credit risk arises when the borrower's current financial condition may indicate less ability to pay than when the commitment was originally made. In the case of letters of credit, the risk arises from the potential failure of the customer to perform according to the terms of a contract. In such a situation, the third party might draw on the letter of credit to pay for completion of the contract and the Company would look to its customer to repay these funds with interest. To minimize the risk, the Company uses the same credit policies in making commitments and conditional obligations as it would for a loan to that customer. Letters of credit and financial guarantees are commitments issued by the Company to guarantee the performance of a customer to a third party in borrowing arrangements. The Company generally has recourse to recover from the customer any amounts paid under the guarantees. Typically, letters of credit issued have expiration dates within one year. A summary of the contractual amounts for unfunded commitments and letters of credit are as follows: September 30, 2023 December 31, 2022 (in millions) Commitments to extend credit, including unsecured loan commitments of $1,024 at September 30, 2023 and $1,209 at December 31, 2022 $ 14,148 $ 18,674 Credit card commitments and financial guarantees 414 379 Letters of credit, including unsecured letters of credit of $4 at September 30, 2023 and $7 at December 31, 2022 246 265 Total $ 14,808 $ 19,318 Commitments to extend credit are agreements to lend to a customer provided that there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The Company enters into credit arrangements that generally provide for the termination of advances in the event of a covenant violation or other event of default. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the party. The commitments are collateralized by the same types of assets used as loan collateral. The Company has exposure to credit losses from unfunded commitments and letters of credit. As funds have not been disbursed on these commitments, they are not reported as loans outstanding. Credit losses related to these commitments are included in Other liabilities as a separate loss contingency and are not included in the ACL reported in "Note 4. Loans, Leases and Allowance for Credit Losses" of these Notes to Unaudited Consolidated Financial Statements. This loss contingency for unfunded loan commitments and letters of credit was $38 million and $47 million as of September 30, 2023 and December 31, 2022, respectively. Changes to this liability are adjusted through the provision for credit losses in the Consolidated Income Statement. Commitments to Invest in Renewable Energy Projects The Company has off-balance sheet commitments to invest in renewable energy projects, as described in "Note 13. Income Taxes" of these Notes to Unaudited Consolidated Financial Statements, subject to the underlying project meeting certain milestones. These conditional commitments totaled $70 million and $117 million as of September 30, 2023 and December 31, 2022, respectively. Concentrations of Lending Activities The Company monitors concentrations of lending activities at the product and borrower relationship level. No borrower relationships at both the commitment and funded loan level exceeded 5% of total loans HFI as of September 30, 2023 and December 31, 2022. The Company does not have a single external customer from which it derives 10% or more of its revenues. Commercial and industrial loans made up 37% and 40% of total HFI loans as of September 30, 2023 and December 31, 2022, respectively. The Company's loan portfolio also includes credit exposure to the CRE market. As of September 30, 2023 and December 31, 2022, CRE non-owner occupied loans accounted for approximately 20% and 18% of total loans HFI, respectively. In addition, approximately $2.6 billion, or 5.3%, of total loans HFI consisted of CRE non-owner occupied office loans as of September 30, 2023, compared to $2.4 billion, or 4.6%, as of December 31, 2022. These office loans primarily consist of shorter-term bridge loans that enable borrowers to reposition or redevelop projects, with the vast majority located in suburban locations. Construction and land loans were 9% and 8% of total loans HFI as of September 30, 2023 and December 31, 2022, respectively. Contingencies The Company is involved in various lawsuits of a routine nature that are being handled and defended in the ordinary course of the Company’s business. Expenses are being incurred in connection with these lawsuits, but in the opinion of management, based in part on consultation with outside legal counsel, the resolution of these lawsuits and associated defense costs will not have a material impact on the Company’s financial position, results of operations, or cash flows. Lease Commitments

Fair Value Accounting

Fair Value Accounting	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Fair Value Accounting	15. FAIR VALUE ACCOUNTING The fair value of an asset or liability is the price that would be received to sell that asset or paid to transfer that liability in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. In estimating fair value, the Company utilizes valuation techniques that are consistent with the market approach, the income approach, and/or the cost approach. Such valuation techniques are consistently applied. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. ASC 825 establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally-developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and the Company’s creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. The Company’s valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While management believes the Company’s valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Furthermore, the reported fair value amounts have not been comprehensively revalued since the presentation dates, and therefore, estimates of fair value after the balance sheet date may differ significantly from the amounts presented herein. A more detailed description of the valuation methodologies used for assets and liabilities measured at fair value is set forth below. Under ASC 825, the Company elected the FVO treatment for junior subordinated debt issued by WAL. This election is irrevocable and results in the recognition of unrealized gains and losses on the debt at each reporting date. These unrealized gains and losses are recognized in OCI rather than earnings. The Company did not elect FVO treatment for the junior subordinated debt assumed in the Bridge Capital Holdings acquisition. The following table presents unrealized gains and losses from fair value changes on junior subordinated debt: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Unrealized (losses) gains $ (1.6) $ 2.1 $ 3.6 $ 7.7 Changes included in OCI, net of tax (1.2) 1.6 2.7 5.8 Fair value on a recurring basis Financial assets and financial liabilities measured at fair value on a recurring basis include the following: AFS debt securities: Securities classified as AFS are reported at fair value utilizing Level 1 and Level 2 inputs. For these securities, the Company obtains fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include quoted prices in active markets, dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information, and the bond’s terms and conditions, among other things. Equity securities: Preferred and common stock and CRA investments are reported at fair value primarily utilizing Level 1 inputs. Independent pricing service: The Company's independent pricing service provides pricing information on the majority of the Company's Level 1 and Level 2 AFS debt securities. For a small subset of securities, other pricing sources are used, including observed prices on publicly-traded securities and dealer quotes. Management independently evaluates the fair value measurements received from the Company's third-party pricing service through multiple review steps. First, management reviews what has transpired in the marketplace with respect to interest rates, credit spreads, volatility, and mortgage rates, among other things, and develops an expectation of changes to the securities' valuations from the previous quarter. Then, management selects a sample of investment securities and compares the values provided by its primary third-party pricing service to the market values obtained from secondary sources, including other pricing services and safekeeping statements, and evaluates those with notable variances. In instances where there are discrepancies in pricing from various sources and management expectations, management may manually price securities using currently observed market data to determine whether they can develop similar prices or may utilize bid information from broker dealers. Any remaining discrepancies between management’s review and the prices provided by the vendor are discussed with the vendor and/or the Company’s other valuation advisors. Loans HFS : Government-insured or guaranteed and agency-conforming loans HFS are salable into active markets. Accordingly, the fair value of these loans 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. Mortgage servicing rights : MSRs are measured based on valuation techniques using Level 3 inputs. The Company uses a discounted cash flow model that incorporates assumptions that market participants would use in estimating the fair value of servicing rights, including, but not limited to, option adjusted spread, conditional prepayment rate, servicing fee rate, recapture rate, and cost to service. Derivative financial instruments : Forward purchase and sales contracts are measured based on valuation techniques using Level 2 inputs, such as quoted market prices, contracted selling prices, or a market price equivalent. Interest rate and foreign currency contracts are reported at fair value utilizing Level 2 inputs. The Company obtains dealer quotations to value its interest rate contracts. IRLCs are measured based on valuation techniques that consider loan type, underlying loan amount, maturity date, note rate, loan program, and expected settlement date, with Level 3 inputs for the servicing release premium and pull-through rate. These measurements are adjusted at the loan level to consider the servicing release premium and loan pricing adjustment specific to each loan. The base value is then adjusted for the pull-through rate. The pull-through rate and servicing fee multiple are unobservable inputs based on historical experience. Junior subordinated debt: The Company estimates the fair value of its junior subordinated debt using a discounted cash flow model which incorporates the effect of the Company’s own credit risk in the fair value of the liabilities (Level 3). The Company’s cash flow assumptions are based on contractual cash flows as the Company anticipates that it will pay the debt according to its contractual terms. 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 September 30, 2023 (in millions) Assets: Available-for-sale debt securities CLO $ — $ 2,165 $ — $ 2,165 Commercial MBS issued by GSEs — 199 — 199 Corporate debt securities — 360 — 360 Private label residential MBS — 1,068 — 1,068 Residential MBS issued by GSEs — 1,858 — 1,858 Tax-exempt — 775 — 775 U.S. Treasury securities 3,198 — — 3,198 Other 28 38 — 66 Total AFS debt securities $ 3,226 $ 6,463 $ — $ 9,689 Equity securities CRA investments 24 — — 24 Preferred stock 97 — — 97 Total equity securities $ 121 $ — $ — $ 121 Loans HFS (2) $ — $ 1,731 $ 3 $ 1,734 MSRs — — 1,233 1,233 Derivative assets (1) — 192 3 195 Liabilities: Junior subordinated debt (3) $ — $ — $ 59 $ 59 Derivative liabilities (1) — 41 6 47 (1) See "Note 11. Derivatives and Hedging Activities." In addition, the carrying value of loans is decreased by $128 million as of September 30, 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. Derivative assets and liabilities exclude margin of $66 million and $25 million, respectively. (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 December 31, 2022 (in millions) 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 (2) $ — $ 1,172 $ 1 $ 1,173 Mortgage servicing rights — — 1,148 1,148 Derivative assets (1) — 42 5 47 Liabilities: Junior subordinated debt (3) $ — $ — $ 63 $ 63 Derivative liabilities (1) — 36 3 39 (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. Derivative assets and liabilities exclude margin of $4 million and $1 million, respectively. (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. The 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 September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Beginning balance $ (57.3) $ (61.8) $ (62.5) $ (67.4) Change in fair value (1) (1.6) 2.1 3.6 7.7 Ending balance $ (58.9) $ (59.7) $ (58.9) $ (59.7) (1) Unrealized (losses) gains attributable to changes in the fair value of junior subordinated debt are recorded in OCI, net of tax, and totaled $(1.2) million and $1.6 million for three months ended September 30, 2023 and 2022, respectively, and $2.7 million and $5.8 million for the nine months ended September 30, 2023 and 2022, respectively. The significant unobservable inputs used in the fair value measurements of these Level 3 liabilities were as follows: September 30, 2023 Valuation Technique Significant Unobservable Inputs Input Value (in millions) Junior subordinated debt $ 59 Discounted cash flow Implied credit rating of the Company 9.88 % December 31, 2022 Valuation Technique Significant Unobservable Inputs Input Value (in millions) Junior subordinated debt $ 63 Discounted cash flow Implied credit rating of the Company 8.13 % The significant unobservable inputs used in the fair value measurement of the Company’s junior subordinated debt as of September 30, 2023 and December 31, 2022 was the implied credit risk for the Company. The implied credit risk spread as of September 30, 2023 was calculated as the difference between the average of the 10 and 15-year 'BB' rated financial indexes over the corresponding swap indexes. As of December 31, 2022, the implied credit risk spread was calculated as the difference between the average of the 15-year 'BB' and 'BBB' rated financial indexes over the corresponding swap index. As of September 30, 2023, the Company estimates the discount rate at 9.88%, which represents an implied credit spread of 4.48% plus three-month SOFR (5.40%). As of December 31, 2022, the Company estimated the discount rate at 8.13%, which was a 3.36% credit spread plus three-month LIBOR (4.77%). The change in Level 3 assets and liabilities measured at fair value on a recurring basis included in income was as follows: Three Months Ended September 30, 2023 Nine Months Ended September 30, 2023 MSRs Net IRLCs (1) MSRs Net IRLCs (1) (in millions) Balance, beginning of period $ 1,007 $ 2 $ 1,148 $ 2 Purchases and additions 266 4,616 653 11,772 Sales and payments (112) — (611) — Settlement of IRLCs upon acquisition or origination of loans HFS — (4,619) — (11,773) Change in fair value 98 (2) 114 (4) Mark to market adjustments — — 4 — Realization of cash flows (26) — (75) — Balance, end of period $ 1,233 $ (3) $ 1,233 $ (3) Changes in unrealized gains for the period (2) $ 97 $ (3) $ 128 $ (3) Three Months Ended September 30, 2022 Nine Months Ended September 30, 2022 MSRs Net IRLCs (1) MSRs Net IRLCs (1) (in millions) Balance, beginning of period $ 826 $ 12 $ 698 $ 9 Purchases and additions 180 5,205 578 16,104 Sales and payments — — (350) — Settlement of IRLCs upon acquisition or origination of loans HFS — (5,235) — (16,099) Change in fair value 63 (10) 206 (42) Realization of cash flows (25) — (88) — Balance, end of period $ 1,044 $ (28) $ 1,044 $ (28) Changes in unrealized gains for the period (2) $ 62 $ (28) $ 150 $ (28) (1) IRLC asset and liability positions are presented net. (2) Amounts recognized as part of non-interest income. The significant unobservable inputs used in the fair value measurements of these Level 3 assets and liabilities were as follows: September 30, 2023 Asset/liability Key inputs Range Weighted average MSRs: Option adjusted spread (in basis points) 88 - 252 233 Conditional prepayment rate (1) 8.6% - 18.4% 13.7% Recapture rate 20.0% - 20.0% 20.0% Servicing fee rate (in basis points) 25.0 - 56.5 33.9 Cost to service $93 - $100 $ 94 IRLCs: Servicing fee multiple 3.2 - 5.8 4.5 Pull-through rate 76% - 100% 91% December 31, 2022 Asset/liability Key inputs Range Weighted average MSRs: Option adjusted spread (in basis points) 190 - 621 378 Conditional prepayment rate (1) 8.5% - 18.5% 13.4% Recapture rate 20.0% - 20.0% 20.0% Servicing fee rate (in basis points) 25.0 - 56.5 33.2 Cost to service $87 - $94 $90 IRLCs: Servicing fee multiple 2.9 - 5.5 4.3 Pull-through rate 69% - 100% 89% (1) Lifetime total prepayment speed annualized. The following is a summary of the difference between the aggregate fair value and the aggregate UPB of loans HFS for which the FVO has been elected: September 30, 2023 December 31, 2022 Fair value UPB Difference Fair value UPB Difference (in millions) Loans HFS: Current through 89 days delinquent $ 1,732 $ 1,705 $ 27 $ 1,172 $ 1,138 $ 34 90 days or more delinquent 2 3 (1) 1 1 — Total $ 1,734 $ 1,708 $ 26 $ 1,173 $ 1,139 $ 34 Fair value on a nonrecurring basis Certain assets are measured at fair value on a nonrecurring basis. That is, the assets are not measured at fair value on an ongoing basis, but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of credit deterioration). 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 September 30, 2023: Loans HFI $ 367 $ — $ — $ 367 Other assets acquired through foreclosure 8 — — 8 As of December 31, 2022: Loans HFI $ 295 $ — $ — $ 295 Other assets acquired through foreclosure 11 — — 11 For Level 3 assets measured at fair value on a nonrecurring basis as of period end, the significant unobservable inputs used in the fair value measurements were as follows: September 30, 2023 Valuation Technique(s) Significant Unobservable Inputs Range (in millions) Loans HFI $ 367 Collateral method Third party appraisal Costs to sell 6.0% to 10.0% Discounted cash flow method Discount rate Contractual loan rate 3.0% to 8.0% Scheduled cash collections Probability of default 0% to 20.0% Proceeds from non-real estate collateral Loss given default 0% to 70.0% Other assets acquired through foreclosure 8 Collateral method Third party appraisal Costs to sell 4.0% to 10.0% December 31, 2022 Valuation Technique(s) Significant Unobservable Inputs Range (in millions) Loans HFI $ 295 Collateral method Third party appraisal Costs to sell 6.0% to 10.0% Discounted cash flow method Discount rate Contractual loan rate 3.0% to 8.0% Scheduled cash collections Probability of default 0% to 20.0% Proceeds from non-real estate collateral Loss given default 0% to 70.0% Other assets acquired through foreclosure 11 Collateral method Third party appraisal Costs to sell 4.0% to 10.0% Loans HFI: Loans measured at fair value on a nonrecurring basis include collateral dependent loans. The specific reserves for these loans are based on collateral value, net of estimated disposition costs and other identified quantitative inputs. Collateral value is determined based on independent third-party appraisals or internally-developed discounted cash flow analyses. Appraisals may utilize a single valuation approach or a combination of approaches, including comparable sales and the income approach. Fair value is determined, where possible, using market prices derived from an appraisal or evaluation, which are considered to be Level 2. However, certain assumptions and unobservable inputs are often used by the appraiser, therefore qualifying the assets as Level 3 in the fair value hierarchy. In addition, when adjustments are made to an appraised value to reflect various factors such as the age of the appraisal or known changes in the market or the collateral, such valuation inputs are considered unobservable and the fair value measurement is categorized as a Level 3 measurement. Internal discounted cash flow analyses are also utilized to estimate the fair value of these loans, which considers internally-developed, unobservable inputs such as discount rates, default rates, and loss severity. Total Level 3 collateral dependent loans had an estimated fair value of $367 million and $295 million at September 30, 2023 and December 31, 2022, respectively, net of a specific ACL of $5 million and $7 million at September 30, 2023 and December 31, 2022, respectively. Other assets acquired through foreclosure: Other assets acquired through foreclosure consist of properties acquired as a result of, or in-lieu-of, foreclosure. These assets are initially reported at the fair value determined by independent appraisals using appraised value less estimated cost to sell. Such properties are generally re-appraised every 12 months. Costs relating to the development or improvement of the assets are capitalized and costs relating to holding the assets are charged to expense. Fair value is determined, where possible, using market prices derived from an appraisal or evaluation, which are considered to be Level 2. However, certain assumptions and unobservable inputs are often used by the appraiser, therefore qualifying the assets as Level 3 in the fair value hierarchy. When significant adjustments are based on unobservable inputs, such as when a current appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value and there is no observable market price, the resulting fair value measurement has been categorized as a Level 3 measurement. The Company had $8 million and $11 million of such assets at September 30, 2023 and December 31, 2022, respectively. Fair Value of Financial Instruments The estimated fair value of the Company’s financial instruments is as follows: September 30, 2023 Carrying Amount Fair Value Level 1 Level 2 Level 3 Total (in millions) Financial assets: Investment securities: HTM $ 1,401 $ — $ 1,140 $ — $ 1,140 AFS 9,689 3,226 6,463 — 9,689 Equity 121 121 — — 121 Derivative assets (1) 195 — 192 3 195 Loans HFS 1,766 — 1,743 22 1,765 Loans HFI, net 49,120 — — 45,202 45,202 Mortgage servicing rights 1,233 — — 1,233 1,233 Accrued interest receivable 348 — 348 — 348 Financial liabilities: Deposits $ 54,287 $ — $ 54,297 $ — $ 54,297 Other borrowings 8,745 — 8,659 — 8,659 Qualifying debt 890 — 680 71 751 Derivative liabilities (1) 47 — 41 6 47 Accrued interest payable 176 — 176 — 176 (1) Derivative assets and liabilities exclude margin of $66 million and $25 million, respectively. 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 (1) 51 — 42 5 47 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 $ — $ 54,297 $ — $ 54,297 Other borrowings 6,299 — 6,261 — 6,261 Qualifying debt 893 — 735 75 810 Derivative liabilities (1) 40 — 36 3 39 Accrued interest payable 35 — 35 — 35 (1) Derivative assets and liabilities exclude margin of $4 million and $1 million, respectively. Interest rate risk The Company assumes interest rate risk (the risk to the Company’s earnings and capital from changes in interest rate levels) as a result of its normal operations. As a result, the fair values of the Company’s financial instruments, as well as its future net interest income, will change when interest rate levels change and that change may be either favorable or unfavorable to the Company. Interest rate risk exposure is measured using interest rate sensitivity analysis to determine the Company's change in EVE and net interest income resulting from hypothetical changes in interest rates. If potential changes to EVE and net interest income resulting from hypothetical interest rate changes are not within the limits established by the BOD, the BOD may direct management to adjust the asset and liability mix to bring interest rate risk within BOD-approved limits. WAB has an ALCO charged with managing interest rate risk within the BOD-approved limits. Limits are structured to preclude an interest rate risk profile that does not conform to both management and BOD risk tolerances without ALCO approval. Interest rate risk is also evaluated at the Parent level, which is reported to the BOD and its Finance and Investment Committee. Fair value of commitments The estimated fair value of letters of credit outstanding at September 30, 2023 and December 31, 2022 approximates zero as there have been no significant changes in borrower creditworthiness. Loan commitments on which the committed interest rates are less than the current market rate are insignificant at September 30, 2023 and December 31, 2022.

Segments

Segments	9 Months Ended
	Sep. 30, 2023
Segment Reporting [Abstract]
Segments	16. 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. The following is a summary of operating segment information for the periods indicated: Balance Sheet: Consolidated Company Commercial Consumer Related Corporate & Other At September 30, 2023: (in millions) Assets: Cash, cash equivalents, and investment securities $ 14,920 $ 11 $ 125 $ 14,784 Loans HFS 1,766 — 1,766 — Loans HFI, net of deferred fees and costs 49,447 28,720 20,727 — Less: allowance for credit losses (327) (277) (50) — Net loans HFI 49,120 28,443 20,677 — Other assets acquired through foreclosure, net 8 8 — — Goodwill and other intangible assets, net 672 292 380 — Other assets 4,405 409 1,902 2,094 Total assets $ 70,891 $ 29,163 $ 24,850 $ 16,878 Liabilities: Deposits $ 54,287 $ 22,643 $ 25,094 $ 6,550 Borrowings and qualifying debt 9,635 9 2,164 7,462 Other liabilities 1,223 136 264 823 Total liabilities 65,145 22,788 27,522 14,835 Allocated equity: 5,746 2,672 1,805 1,269 Total liabilities and stockholders' equity $ 70,891 $ 25,460 $ 29,327 $ 16,104 Excess funds provided (used) — (3,703) 4,477 (774) Income Statement: Three Months Ended September 30, 2023: (in millions) Net interest income $ 587.0 $ 331.5 $ 243.8 $ 11.7 Provision for (recovery of) credit losses 12.1 14.1 (3.0) 1.0 Net interest income after provision for credit losses 574.9 317.4 246.8 10.7 Non-interest income 129.2 25.9 89.4 13.9 Non-interest expense 426.2 147.2 267.3 11.7 Income before income taxes 277.9 196.1 68.9 12.9 Income tax expense (benefit) 61.3 64.9 28.8 (32.4) Net income $ 216.6 $ 131.2 $ 40.1 $ 45.3 Nine Months Ended September 30, 2023: (in millions) Net interest income $ 1,747.2 $ 1,077.5 $ 647.8 $ 21.9 Provision for credit losses 53.3 29.7 0.4 23.2 Net interest income (expense) after provision for credit losses 1,693.9 1,047.8 647.4 (1.3) Non-interest income 190.2 (40.1) 226.6 3.7 Non-interest expense 1,161.5 430.9 691.6 39.0 Income (loss) before provision for income taxes 722.6 576.8 182.4 (36.6) Income tax expense (benefit) 148.1 125.1 39.4 (16.4) Net income (loss) $ 574.5 $ 451.7 $ 143.0 $ (20.2) 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 September 30, 2022: (in millions) Net interest income $ 602.1 $ 413.0 $ 235.0 $ (45.9) Provision for credit losses 28.5 19.9 7.6 1.0 Net interest income (expense) after provision for credit losses 573.6 393.1 227.4 (46.9) Non-interest income 61.8 16.1 44.2 1.5 Non-interest expense 305.8 111.0 178.4 16.4 Income (loss) before income taxes 329.6 298.2 93.2 (61.8) Income tax expense (benefit) 65.6 71.0 22.3 (27.7) Net income (loss) $ 264.0 $ 227.2 $ 70.9 $ (34.1) Nine Months Ended September 30, 2022: (in millions) Net interest income $ 1,576.6 $ 1,118.3 $ 637.7 $ (179.4) Provision for (recovery of) credit losses 65.0 53.1 12.9 (1.0) Net interest income (expense) after provision for credit losses 1,511.6 1,065.2 624.8 (178.4) Non-interest income 263.1 51.0 198.0 14.1 Non-interest expense 823.3 341.4 442.5 39.4 Income (loss) before income taxes 951.4 774.8 380.3 (203.7) Income tax expense (benefit) 187.1 184.4 90.8 (88.1) Net income (loss) $ 764.3 $ 590.4 $ 289.5 $ (115.6)

Revenue from Contracts with Cus

Revenue from Contracts with Customers	9 Months Ended
	Sep. 30, 2023
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	17. REVENUE FROM CONTRACTS WITH CUSTOMERS

Mergers, Acquisitions and Dispo

Mergers, Acquisitions and Dispositions	9 Months Ended
	Sep. 30, 2023
Business Combination and Asset Acquisition [Abstract]
Mergers, Acquisitions and Dispositions	18. MERGERS, ACQUISITIONS AND DISPOSITIONS Acquisition of Digital Disbursements On January 25, 2022, the Company completed its acquisition of DST, doing business as Digital Disbursements, a digital payments platform for the class action legal industry. The acquisition of DST extended the Company's digital payment efforts by providing a digital payments platform for the class action market and broader legal industry. This transaction was accounted for as a business combination under the acquisition method of accounting. Assets purchased and liabilities assumed were recorded at their respective acquisition date estimated fair values, which were final as of December 31, 2022. Total consideration of $57.0 million, comprised of cash paid at closing of $50.6 million and contingent consideration with an estimated fair value of $6.4 million, was exchanged for all of the issued and outstanding membership interests of DST. The terms of the acquisition include a contingent consideration arrangement that is based on performance for the three year period subsequent to the acquisition. There is no required minimum or maximum payment amount specified under the terms of the contingent consideration agreement. The fair value of the contingent consideration recognized on the acquisition date was estimated using a discounted cash flow approach. DST’s results of operations have been included in the Company's results beginning January 25, 2022 and are reported as part of the Consumer Related segment. Acquisition and restructure expenses of $0.4 million for the nine months ended September 30, 2022 were included as a component of non-interest expense in the Consolidated Income Statement, all of which were acquisition related costs as defined by ASC 805. The fair value amounts of identifiable assets acquired and liabilities assumed in the DST acquisition are as follows: January 25, 2022 (in millions) Assets acquired: Cash and cash equivalents $ 0.6 Identified intangible assets 20.1 Other assets 0.1 Total assets $ 20.8 Liabilities assumed: Other liabilities $ 0.4 Total liabilities 0.4 Net assets acquired $ 20.4 Consideration paid Cash $ 50.6 Contingent consideration 6.4 Total consideration $ 57.0 Goodwill $ 36.6 In connection with the acquisition, the Company acquired identifiable intangible assets totaling $20.1 million, as detailed in the table below: Acquisition Date Fair Value Estimated Useful Life (in millions) (in years) Customer relationships $ 15.7 7 Developed technology 4.1 5 Trade name 0.3 10 Total $ 20.1

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net income	$ 216.6	$ 264	$ 574.5	$ 764.3

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
Nature of operations	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 September 30, 2023 and for the three and nine months ended September 30, 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 and Recently adopted accounting guidance	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 write-offs 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 or evaluated using fair value measurements; and 3) accounting for income taxes.
Principles of consolidation	Principles of consolidation As of September 30, 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.
Goodwill and other intangible assets	Goodwill and other intangible assetsThe Company evaluated whether the continued effects from the bank failures in early 2023 may give rise to a triggering event and elected to perform a Step 0 goodwill impairment assessment, which included assessing the financial performance of the Company and analyzing qualitative factors applicable to the Company.

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Carrying Amounts and Fair Values of Investment Securities	The carrying amounts and fair values of investment securities are summarized as follows: September 30, 2023 Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value (in millions) Held-to-maturity Private label residential MBS $ 189 $ — $ (51) $ 138 Tax-exempt 1,212 — (210) 1,002 Total HTM securities $ 1,401 $ — $ (261) $ 1,140 Available-for-sale debt securities CLO $ 2,183 $ 1 $ (19) $ 2,165 Commercial MBS issued by GSEs 212 — (13) 199 Corporate debt securities 411 — (51) 360 Private label residential MBS 1,340 — (272) 1,068 Residential MBS issued by GSEs 2,333 — (475) 1,858 Tax-exempt 918 — (143) 775 U.S. Treasury securities 3,201 — (3) 3,198 Other 74 3 (11) 66 Total AFS debt securities $ 10,672 $ 4 $ (987) $ 9,689 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
Unrealized Losses and Fair Value of Investment Securities in Continuous Unrealized Loss Position	The following tables summarize the Company's AFS debt securities in an unrealized loss position, aggregated by major security type and length of time in a continuous unrealized loss position: September 30, 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 $ 1 $ 129 $ 18 $ 1,757 $ 19 $ 1,886 Commercial MBS issued by GSEs 2 145 11 53 13 198 Corporate debt securities (1) — — 51 352 51 352 Private label residential MBS 1 25 271 1,016 272 1,041 Residential MBS issued by GSEs 12 380 463 1,475 475 1,855 Tax-exempt 6 69 137 706 143 775 U.S. Treasury securities 3 2,444 — — 3 2,444 Other 1 9 10 44 11 53 Total AFS securities $ 26 $ 3,201 $ 961 $ 5,403 $ 987 $ 8,604 (1) Includes securities with an ACL that have a fair value of $143 million and unrealized losses of $29 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
Rollforward by Major Security Type of the ACL on AFS Debt Securities	The following table presents a rollforward by major security type of the ACL on the Company's AFS debt securities: Three Months Ended September 30, 2023 Balance, Provision for Credit Losses Charge-offs Recoveries Balance, (in millions) Available for sale securities Corporate debt securities $ 4.4 $ 0.3 $ — $ — $ 4.7 Nine Months Ended September 30, 2023 Balance, Provision for Credit Losses Charge-offs Recoveries Balance, (in millions) Available for sale securities Corporate debt securities $ — $ 21.8 $ (17.1) $ — $ 4.7
Rollforward by Major Security Type of the ACL on HTM Debt Securities	The following table presents a rollforward by major security type of the ACL on the Company's HTM debt securities: Three Months Ended September 30, 2023 Balance, Provision for Credit Losses Charge-offs Recoveries Balance, (in millions) Held-to-maturity debt securities Tax-exempt $ 6.0 $ 0.7 $ — $ — $ 6.7 Nine Months Ended September 30, 2023 Balance, Provision for Credit Losses Charge-offs Recoveries Balance, (in millions) Held-to-maturity debt securities Tax-exempt $ 5.2 $ 1.5 $ — $ — $ 6.7 Three Months Ended September 30, 2022: Balance, Provision for Credit Losses Charge-offs Recoveries Balance (in millions) Held-to-maturity debt securities Tax-exempt $ 3.2 $ 1.2 $ — $ — $ 4.4 Nine Months Ended September 30, 2022: Balance, Recovery of Credit Losses Charge-offs Recoveries Balance (in millions) Held-to-maturity debt securities Tax-exempt $ 5.2 $ (0.8) $ — $ — $ 4.4
Investment Securities by Credit Rating Type	The following tables summarize the carrying amount of the Company’s investment ratings position, which are updated quarterly and used to monitor the credit quality of the Company's securities: September 30, 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 $ — $ — $ — $ — $ — $ — $ 189 $ 189 Tax-exempt — — — — — — 1,212 1,212 Total HTM securities (1) $ — $ — $ — $ — $ — $ — $ 1,401 $ 1,401 Available-for-sale debt securities CLO $ 121 $ — $ 1,980 $ 64 $ — $ — $ — $ 2,165 Commercial MBS issued by GSEs — 199 — — — — — 199 Corporate debt securities — — — 75 225 60 — 360 Private label residential MBS 1,044 — 24 — — — — 1,068 Residential MBS issued by GSEs — 1,858 — — — — — 1,858 Tax-exempt 8 15 329 348 — — 75 775 U.S. Treasury securities — 3,198 — — — — — 3,198 Other — — 9 9 29 3 16 66 Total AFS securities (1) $ 1,173 $ 5,270 $ 2,342 $ 496 $ 254 $ 63 $ 91 $ 9,689 Equity securities CRA investments $ — $ 24 $ — $ — $ — $ — $ — $ 24 Preferred stock — — — — 52 34 11 97 Total equity securities (1) $ — $ 24 $ — $ — $ 52 $ 34 $ 11 $ 121 (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.
Amortized Cost and Fair Value of Investment Securities by Contractual Maturities	The amortized cost and fair value of the Company's debt securities 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. September 30, 2023 Amortized Cost Estimated Fair Value (in millions) Held-to-maturity Due in one year or less $ 21 $ 21 After one year through five years 14 14 After five years through ten years 77 64 After ten years 1,100 903 Mortgage-backed securities 189 138 Total HTM securities $ 1,401 $ 1,140 Available-for-sale Due in one year or less $ 3,201 $ 3,198 After one year through five years 166 155 After five years through ten years 900 855 After ten years 2,520 2,356 Mortgage-backed securities 3,885 3,125 Total AFS securities $ 10,672 $ 9,689
Gains and Losses on Sales of Investment Securities	The following table presents gross gains and losses on sales of investment securities: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Available-for-sale securities Gross gains $ 0.5 $ — $ 4.0 $ 7.3 Gross losses — — (29.6) — Net gains (losses) on AFS securities $ 0.5 $ — $ (25.6) $ 7.3 Equity securities Gross gains $ — $ — $ — $ — Gross losses (0.4) — (0.4) (0.6) Net losses on equity securities $ (0.4) $ — $ (0.4) $ (0.6)

Loans Held For Sale (Tables)

Loans Held For Sale (Tables)	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Summary of Loans HFS by Type	The following is a summary of loans HFS by type: September 30, 2023 December 31, 2022 (in millions) Government-insured or guaranteed: EBO (1) $ 3 $ — Non-EBO 1,165 591 Total government-insured or guaranteed 1,168 591 Agency-conforming 585 593 Non-agency 13 — Total loans HFS $ 1,766 $ 1,184 (1) EBO loans are delinquent FHA, VA, or USDA loans purchased from GNMA pools under the terms of the GNMA MBS program that can be repooled when loans are brought current either through the borrower's reperformance or through completion of a loan modification. The following is a summary of the net gain on loan purchase, origination, and sale activities on residential mortgage loans to be sold or securitized: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Mortgage servicing rights capitalized upon sale of loans $ 265.8 $ 180.6 $ 653.0 $ 578.1 Net proceeds from sale of loans (1) (274.7) (207.1) (612.7) (905.7) Provision for and change in estimate of liability for losses under representations and warranties, net 0.1 0.7 2.8 2.3 Change in fair value (10.1) (75.1) (13.2) (82.0) Change in fair value of derivatives: Unrealized gain (loss) on derivatives 10.3 80.7 25.3 112.1 Realized gain on derivatives 44.5 18.3 47.0 321.8 Total change in fair value of derivatives 54.8 99.0 72.3 433.9 Net gain on residential mortgage loans HFS $ 35.9 $ (1.9) $ 102.2 $ 26.6 Loan acquisition and origination fees 16.1 16.4 43.5 52.0 Net gain on loan origination and sale activities $ 52.0 $ 14.5 $ 145.7 $ 78.6
Summary of Net Gain on Loan Purchase, Origination and Sale Activities on Residential Mortgage Loans	The following is a summary of loans HFS by type: September 30, 2023 December 31, 2022 (in millions) Government-insured or guaranteed: EBO (1) $ 3 $ — Non-EBO 1,165 591 Total government-insured or guaranteed 1,168 591 Agency-conforming 585 593 Non-agency 13 — Total loans HFS $ 1,766 $ 1,184 (1) EBO loans are delinquent FHA, VA, or USDA loans purchased from GNMA pools under the terms of the GNMA MBS program that can be repooled when loans are brought current either through the borrower's reperformance or through completion of a loan modification. The following is a summary of the net gain on loan purchase, origination, and sale activities on residential mortgage loans to be sold or securitized: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Mortgage servicing rights capitalized upon sale of loans $ 265.8 $ 180.6 $ 653.0 $ 578.1 Net proceeds from sale of loans (1) (274.7) (207.1) (612.7) (905.7) Provision for and change in estimate of liability for losses under representations and warranties, net 0.1 0.7 2.8 2.3 Change in fair value (10.1) (75.1) (13.2) (82.0) Change in fair value of derivatives: Unrealized gain (loss) on derivatives 10.3 80.7 25.3 112.1 Realized gain on derivatives 44.5 18.3 47.0 321.8 Total change in fair value of derivatives 54.8 99.0 72.3 433.9 Net gain on residential mortgage loans HFS $ 35.9 $ (1.9) $ 102.2 $ 26.6 Loan acquisition and origination fees 16.1 16.4 43.5 52.0 Net gain on loan origination and sale activities $ 52.0 $ 14.5 $ 145.7 $ 78.6

Loans, Leases and Allowance f_2

Loans, Leases and Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
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: September 30, 2023 December 31, 2022 (in millions) Warehouse lending $ 6,439 $ 5,561 Municipal & nonprofit 1,474 1,524 Tech & innovation 2,254 2,293 Equity fund resources 1,034 3,717 Other commercial and industrial 7,317 7,793 CRE - owner occupied 1,624 1,656 Hotel franchise finance 3,837 3,807 Other CRE - non-owner occupied 5,952 5,457 Residential 13,301 13,996 Residential - EBO 1,343 1,884 Construction and land development 4,652 3,995 Other 220 179 Total loans HFI 49,447 51,862 Allowance for credit losses (327) (310) Total loans HFI, net of allowance $ 49,120 $ 51,552
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: September 30, 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 — 7 7 — Other commercial and industrial 52 17 69 — CRE - owner occupied 8 1 9 — Other CRE - non-owner occupied 77 — 77 — Residential — 62 62 — Residential - EBO — — — 439 Total $ 137 $ 100 $ 237 $ 439 December 31, 2022 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 $ — $ 7 $ 7 $ — Tech & innovation — 1 1 — Other commercial and industrial 1 23 24 — CRE - owner occupied 10 2 12 — Hotel franchise finance — 10 10 — Other CRE - non-owner occupied 5 3 8 — Residential — 19 19 — Residential - EBO — — — 582 Construction and land development 4 — 4 — Total $ 20 $ 65 $ 85 $ 582
Aging of Loan Portfolio by Loan Portfolio Segment	The following table presents an aging analysis of past due loans by loan portfolio segment: September 30, 2023 Current 30-59 Days 60-89 Days Over 90 days Total Total (in millions) Warehouse lending $ 6,439 $ — $ — $ — $ — $ 6,439 Municipal & nonprofit 1,474 — — — — 1,474 Tech & innovation 2,254 — — — — 2,254 Equity fund resources 1,034 — — — — 1,034 Other commercial and industrial 7,317 — — — — 7,317 CRE - owner occupied 1,622 — 2 — 2 1,624 Hotel franchise finance 3,837 — — — — 3,837 Other CRE - non-owner occupied 5,923 29 — — 29 5,952 Residential 13,216 68 17 — 85 13,301 Residential - EBO 643 158 103 439 700 1,343 Construction and land development 4,579 54 19 — 73 4,652 Other 220 — — — — 220 Total loans $ 48,558 $ 309 $ 141 $ 439 $ 889 $ 49,447 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
Credit Quality Indicators	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 As of and for the nine months ended September 30, 2023 2023 2022 2021 2020 2019 Prior (in millions) Warehouse lending Pass $ 594 $ 260 $ 4 $ 289 $ — $ — $ 5,290 $ 6,437 Special mention — — — — — — 2 2 Classified — — — — — — — — Total $ 594 $ 260 $ 4 $ 289 $ — $ — $ 5,292 $ 6,439 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Municipal & nonprofit Pass $ 14 $ 152 $ 192 $ 182 $ 69 $ 834 $ — $ 1,443 Special mention — 7 — — — 11 — 18 Classified — — — — 6 7 — 13 Total $ 14 $ 159 $ 192 $ 182 $ 75 $ 852 $ — $ 1,474 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Tech & innovation Pass $ 406 $ 683 $ 196 $ 58 $ 53 $ 1 $ 785 $ 2,182 Special mention 8 11 1 6 — — 17 43 Classified 14 7 2 3 — — 3 29 Total $ 428 $ 701 $ 199 $ 67 $ 53 $ 1 $ 805 $ 2,254 Current period gross charge-offs $ 2 $ — $ — $ — $ — $ — $ — $ 2 Equity fund resources Pass $ 280 $ 32 $ 47 $ 37 $ 2 $ — $ 636 $ 1,034 Special mention — — — — — — — — Classified — — — — — — — — Total $ 280 $ 32 $ 47 $ 37 $ 2 $ — $ 636 $ 1,034 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Other commercial and industrial Pass $ 1,555 $ 1,691 $ 668 $ 193 $ 100 $ 225 $ 2,625 $ 7,057 Special mention 94 53 2 — — — — 149 Classified 1 38 63 1 4 1 3 111 Total $ 1,650 $ 1,782 $ 733 $ 194 $ 104 $ 226 $ 2,628 $ 7,317 Current period gross charge-offs $ 1 $ 3 $ 10 $ 4 $ — $ — $ 1 $ 19 CRE - owner occupied Pass $ 93 $ 347 $ 330 $ 165 $ 136 $ 491 $ 36 $ 1,598 Special mention 4 4 — — 1 5 — 14 Classified — — 4 2 1 5 — 12 Total $ 97 $ 351 $ 334 $ 167 $ 138 $ 501 $ 36 $ 1,624 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Hotel franchise finance Pass $ 454 $ 1,531 $ 618 $ 95 $ 470 $ 173 $ 134 $ 3,475 Special mention 37 22 67 — — 68 — 194 Classified 46 9 20 26 43 24 — 168 Total $ 537 $ 1,562 $ 705 $ 121 $ 513 $ 265 $ 134 $ 3,837 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Term Loan Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Total As of and for the nine months ended September 30, 2023 2023 2022 2021 2020 2019 Prior (in millions) Other CRE - non-owner occupied Pass $ 1,370 $ 2,227 $ 739 $ 535 $ 186 $ 257 $ 246 $ 5,560 Special mention 16 42 72 71 29 — — 230 Classified 48 1 93 1 15 4 — 162 Total $ 1,434 $ 2,270 $ 904 $ 607 $ 230 $ 261 $ 246 $ 5,952 Current period gross charge-offs $ — $ — $ 5 $ — $ — $ — $ — $ 5 Residential Pass $ 277 $ 3,603 $ 8,022 $ 827 $ 275 $ 212 $ 23 $ 13,239 Special mention — — — — — — — — Classified — 21 32 3 3 3 — 62 Total $ 277 $ 3,624 $ 8,054 $ 830 $ 278 $ 215 $ 23 $ 13,301 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Residential - EBO Pass $ 1 $ 10 $ 239 $ 564 $ 268 $ 261 $ — $ 1,343 Special mention — — — — — — — — Classified — — — — — — — — Total $ 1 $ 10 $ 239 $ 564 $ 268 $ 261 $ — $ 1,343 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Construction and land development Pass $ 910 $ 1,985 $ 418 $ 69 $ — $ 1 $ 1,190 $ 4,573 Special mention — — 6 12 — — — 18 Classified — 19 — 42 — — — 61 Total $ 910 $ 2,004 $ 424 $ 123 $ — $ 1 $ 1,190 $ 4,652 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Other Pass $ 8 $ 14 $ 3 $ 13 $ 4 $ 66 $ 112 $ 220 Special mention — — — — — — — — Classified — — — — — — — — Total $ 8 $ 14 $ 3 $ 13 $ 4 $ 66 $ 112 $ 220 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — Total by Risk Category Pass $ 5,962 $ 12,535 $ 11,476 $ 3,027 $ 1,563 $ 2,521 $ 11,077 $ 48,161 Special mention 159 139 148 89 30 84 19 668 Classified 109 95 214 78 72 44 6 618 Total $ 6,230 $ 12,769 $ 11,838 $ 3,194 $ 1,665 $ 2,649 $ 11,102 $ 49,447 Current period gross charge-offs $ 3 $ 3 $ 15 $ 4 $ — $ — $ 1 $ 26 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
Amortized Cost Basis of Loans Modified	The following table presents the amortized cost basis of loans HFI that were modified during the period by loan portfolio segment: Amortized Cost Basis at September 30, 2023 Payment Delay and Term Extension Term Extension Payment Delay Total % of Total Class of Financing Receivable Three Months Ended (dollars in millions) Tech & innovation $ — $ — $ 7 $ 7 0.3 % Other commercial and industrial — 1 12 13 0.2 CRE - owner occupied — 3 — 3 0.2 Hotel franchise finance — 20 — 20 0.5 Other CRE - non-owner occupied — 20 — 20 0.3 Total $ — $ 44 $ 19 $ 63 0.1 % Amortized Cost Basis at September 30, 2023 Payment Delay and Term Extension Term Extension Payment Delay Total % of Total Class of Financing Receivable Nine Months Ended (dollars in millions) Tech & innovation $ 2 $ — $ 7 $ 9 0.4 % Other commercial and industrial — 24 12 36 0.5 CRE - owner occupied — 3 — 3 0.2 Hotel franchise finance — 46 — 46 1.2 Other CRE - non-owner occupied — 48 — 48 0.8 Residential — — 1 1 0.0 Total $ 2 $ 121 $ 20 $ 143 0.3 %
TDR Loans by Loan Portfolio Segment	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
Collateral-Dependent Loans	The following table presents the amortized cost basis of collateral-dependent loans by loan portfolio segment: September 30, 2023 December 31, 2022 Real Estate Collateral Other Collateral Total Real Estate Collateral Other Collateral Total (in millions) Municipal & nonprofit $ — $ 12 $ 12 $ — $ 7 $ 7 Tech & innovation — — — — 6 6 Other commercial and industrial — 8 8 — 30 30 CRE - owner occupied 6 — 6 42 — 42 Hotel franchise finance 125 — 125 186 — 186 Other CRE - non-owner occupied 160 — 160 27 — 27 Construction and land development 61 — 61 4 — 4 Total $ 352 $ 20 $ 372 $ 259 $ 43 $ 302
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 September 30, 2023 Balance, Provision for (Recovery of) Credit Losses Charge-offs Recoveries Balance, (in millions) Warehouse lending $ 5.2 $ (0.5) $ — $ — $ 4.7 Municipal & nonprofit 16.5 0.2 — — 16.7 Tech & innovation 33.6 (1.6) — — 32.0 Equity fund resources 1.7 — — — 1.7 Other commercial and industrial 51.8 22.8 5.4 (0.3) 69.5 CRE - owner occupied 8.0 (0.3) — — 7.7 Hotel franchise finance 45.7 (5.1) — — 40.6 Other CRE - non-owner occupied 90.1 8.6 3.0 — 95.7 Residential 33.9 (7.9) — (0.1) 26.1 Residential - EBO — — — — — Construction and land development 31.7 (2.6) — — 29.1 Other 2.9 0.7 0.1 (0.1) 3.6 Total $ 321.1 $ 14.3 $ 8.5 $ (0.5) $ 327.4 Nine Months Ended September 30, 2023 Balance, Provision for (Recovery of) Credit Losses Charge-offs Recoveries Balance, (in millions) Warehouse lending $ 8.4 $ (3.7) $ — $ — $ 4.7 Municipal & nonprofit 15.9 0.8 — — 16.7 Tech & innovation 30.8 3.0 1.8 — 32.0 Equity fund resources 6.4 (4.7) — — 1.7 Other commercial and industrial 85.9 (2.0) 18.7 (4.3) 69.5 CRE - owner occupied 7.1 0.6 — — 7.7 Hotel franchise finance 46.9 (6.3) — — 40.6 Other CRE - non-owner occupied 47.4 53.5 5.2 — 95.7 Residential 30.4 (4.4) — (0.1) 26.1 Residential - EBO — — — — — Construction and land development 27.4 1.7 — — 29.1 Other 3.1 0.6 0.2 (0.1) 3.6 Total $ 309.7 $ 39.1 $ 25.9 $ (4.5) $ 327.4 Three Months Ended September 30, 2022 Balance, Provision for (Recovery of) Credit Losses Charge-offs Recoveries Balance, (in millions) Warehouse lending $ 3.7 $ 0.7 $ — $ — $ 4.4 Municipal & nonprofit 13.6 1.6 — — 15.2 Tech & innovation 25.4 (0.2) — — 25.2 Equity fund resources 14.0 (3.1) — — 10.9 Other commercial and industrial 119.2 (14.7) 2.1 (3.8) 106.2 CRE - owner occupied 7.5 (0.8) — — 6.7 Hotel franchise finance 33.8 17.2 — — 51.0 Other CRE - non-owner occupied 22.1 11.2 — (0.1) 33.4 Residential 18.8 6.8 — — 25.6 Construction and land development 12.2 10.1 — (0.1) 22.4 Other 2.9 0.2 — — 3.1 Total $ 273.2 $ 29.0 $ 2.1 $ (4.0) $ 304.1 Nine Months Ended September 30, 2022 Balance, Provision for (Recovery of) Credit Losses Charge-offs Recoveries Balance, (in millions) Warehouse lending $ 3.0 $ 1.4 $ — $ — $ 4.4 Municipal & nonprofit 13.7 1.5 — — 15.2 Tech & innovation 25.7 (2.5) — (2.0) 25.2 Equity fund resources 9.6 1.3 — — 10.9 Other commercial and industrial 103.6 4.7 7.0 (4.9) 106.2 CRE - owner occupied 10.6 (4.0) — (0.1) 6.7 Hotel franchise finance 41.5 9.5 — — 51.0 Other CRE - non-owner occupied 16.9 16.4 — (0.1) 33.4 Residential 12.5 13.1 — — 25.6 Construction and land development 12.5 9.8 — (0.1) 22.4 Other 2.9 0.1 0.1 (0.2) 3.1 Total $ 252.5 $ 51.3 $ 7.1 $ (7.4) $ 304.1 The below table reflects the activity in the ACL on unfunded loan commitments: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Balance, beginning of period $ 41.1 $ 53.8 $ 47.0 $ 37.6 Provision for credit losses (3.2) (1.7) (9.1) 14.5 Balance, end of period $ 37.9 $ 52.1 $ 37.9 $ 52.1 The following tables disaggregate the Company's ACL on funded loans HFI and loan balances by measurement methodology: September 30, 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 $ 6,439 $ — $ 6,439 $ 4.7 $ — $ 4.7 Municipal & nonprofit 1,461 13 1,474 13.2 3.5 16.7 Tech & innovation 2,225 29 2,254 27.9 4.1 32.0 Equity fund resources 1,034 — 1,034 1.7 — 1.7 Other commercial and industrial 7,209 108 7,317 63.3 6.2 69.5 CRE - owner occupied 1,615 9 1,624 7.7 — 7.7 Hotel franchise finance 3,669 168 3,837 40.6 — 40.6 Other CRE - non-owner occupied 5,791 161 5,952 95.7 — 95.7 Residential 13,301 — 13,301 26.1 — 26.1 Residential EBO 1,343 — 1,343 — — — Construction and land development 4,592 60 4,652 29.1 — 29.1 Other 220 — 220 3.6 — 3.6 Total $ 48,899 $ 548 $ 49,447 $ 313.6 $ 13.8 $ 327.4 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

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	9 Months Ended
	Sep. 30, 2023
Transfers and Servicing [Abstract]
Changes in Fair Value of the Company's MSR Portfolio	The following table presents the changes in fair value of the Company's MSR portfolio related to its mortgage banking business and other information related to its servicing portfolio: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Balance, beginning of period $ 1,007 $ 826 $ 1,148 $ 698 Additions from loans sold with servicing rights retained 266 180 653 578 Carrying value of MSRs sold (112) — (611) (350) Change in fair value 98 63 114 206 Mark to market adjustments — — 4 — Realization of cash flows (26) (25) (75) (88) Balance, end of period $ 1,233 $ 1,044 $ 1,233 $ 1,044 Unpaid principal balance of mortgage loans serviced for others $ 70,261 $ 62,841
Effect of Hypothetical Changes in the Fair Value of MSRs	The following table presents the effect of hypothetical changes in the fair value of MSRs caused by assumed immediate changes in interest rates, discount rates, and prepayment speeds that are used to determine fair value: September 30, 2023 (in millions) Fair value of mortgage servicing rights $ 1,233 Increase (decrease) in fair value resulting from: Interest rate change of 50 basis points Adverse change (59) Favorable change 52 Discount rate change of 50 basis points Increase (25) Decrease 26 Conditional prepayment rate change of 1% Increase (29) Decrease 32 Cost to service change of 10% Increase (15) Decrease 15

Deposits (Tables)

Deposits (Tables)	9 Months Ended
	Sep. 30, 2023
Other Liabilities Disclosure [Abstract]
Deposits by Type	The table below summarizes deposits by type: September 30, 2023 December 31, 2022 (in millions) Non-interest-bearing demand deposits $ 17,991 $ 19,691 Interest-bearing transaction accounts 12,843 9,507 Savings and money market accounts 14,672 19,397 Time certificates of deposit ($250,000 or more) 6,690 3,815 Other time deposits 2,091 1,234 Total deposits $ 54,287 $ 53,644
Summary of Contractual Maturities for Time Deposits	A summary of the contractual maturities for all time deposits as of September 30, 2023 is as follows: December 31, (in millions) 2023 $ 3,311 2024 4,870 2025 594 2026 5 2027 1 Total $ 8,781

Other Borrowings (Tables)

Other Borrowings (Tables)	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Company's Borrowings	The following table summarizes the Company’s borrowings by type: September 30, 2023 December 31, 2022 (in millions) Short-Term: Federal funds purchased $ 122 $ 640 BTFP advances 1,300 — FHLB advances 4,700 4,300 Warehouse borrowings 1,334 — Repurchase agreements 490 27 Secured borrowings 36 25 Total short-term borrowings $ 7,982 $ 4,992 Long-Term: AmeriHome senior notes, net of fair value adjustment $ 313 $ 315 Credit linked notes, net 450 992 Total long-term borrowings $ 763 $ 1,307 Total other borrowings $ 8,745 $ 6,299 The Company's outstanding credit linked note issuances are detailed in the tables below: September 30, 2023 Description Issuance Date Maturity Date Interest Rate Principal Debt Issuance Costs (in millions) Residential mortgage loans (1) December 12, 2022 October 25, 2052 SOFR + 7.80% $ 91 $ 2 Residential mortgage loans (2) June 30, 2022 April 25, 2052 SOFR + 6.00% 181 3 Residential mortgage loans (4) December 29, 2021 July 25, 2059 SOFR + 4.67% 194 3 Total $ 466 $ 8 December 31, 2022 Description Issuance Date Maturity Date Interest Rate Principal Debt Issuance Costs (in millions) Residential mortgage loans (1) December 12, 2022 October 25, 2052 SOFR + 7.80% $ 95 $ 2 Residential mortgage loans (2) June 30, 2022 April 25, 2052 SOFR + 6.00% 189 3 Equity fund resource loans (3) June 23, 2022 June 30, 2028 SOFR + 6.75% 300 4 Residential mortgage loans (4) December 29, 2021 July 25, 2059 SOFR + 4.67% 202 3 Warehouse loans (5) June 28, 2021 December 30, 2024 LIBOR + 5.50% 242 2 Total $ 1,028 $ 14 (1) There are multiple classes of these notes, each with an interest rate of SOFR plus a spread that ranges from 2.25% to 11.00% (or, a weighted average spread of 7.80%) on a reference pool balance of $1.8 billion as of September 30, 2023 and December 31, 2022. (2) There are multiple classes of these notes, each with an interest rate of SOFR plus a spread that ranges from 2.25% to 15.00% (or, a weighted average spread of 6.00%) on a reference pool balance of $3.6 billion and $3.8 billion as of September 30, 2023 and December 31, 2022, respectively. (3) These notes had a reference pool balance of $1.6 billion as of December 31, 2022. (4) There are six classes of these notes, each with an interest rate of SOFR plus a spread that ranges from 3.15% to 8.50% (or, a weighted average spread of 4.67%) on a reference pool balance of $3.8 billion and $4.0 billion as of September 30, 2023 and December 31, 2022, respectively. (5) These notes had a reference pool balance of $689 million as of December 31, 2022. The Company's subordinated debt issuances are detailed in the tables below: September 30, 2023 Description Issuance Date Maturity Date Interest Rate Principal Debt Issuance Costs (in millions) WAL fixed-to-variable-rate (1) June 2021 June 15, 2031 3.00 % $ 600 $ 7 WAB fixed-to-variable-rate (2) May 2020 June 1, 2030 5.25 % 225 1 Total $ 825 $ 8 December 31, 2022 Description Issuance Date Maturity Date Interest Rate Principal Debt Issuance Costs (in millions) WAL fixed-to-variable-rate (1) June 2021 June 15, 2031 3.00 % $ 600 $ 7 WAB fixed-to-variable-rate (2) May 2020 June 1, 2030 5.25 % 225 1 Total $ 825 $ 8 (1) Notes are redeemable, in whole or in part, beginning on June 15, 2026 at their principal amount plus accrued and unpaid interest and has a fixed interest rate of 3.00%. The notes also convert to a variable rate of three-month SOFR plus 225 basis points on this date. (2) Debt is redeemable, in whole or in part, on or after June 1, 2025 at its principal amount plus accrued and unpaid interest and has a fixed interest rate of 5.25% through June 1, 2025 and then converts to a variable rate per annum equal to three-month SOFR plus 512 basis points.

Qualifying Debt (Tables)

Qualifying Debt (Tables)	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Company's Borrowings	The following table summarizes the Company’s borrowings by type: September 30, 2023 December 31, 2022 (in millions) Short-Term: Federal funds purchased $ 122 $ 640 BTFP advances 1,300 — FHLB advances 4,700 4,300 Warehouse borrowings 1,334 — Repurchase agreements 490 27 Secured borrowings 36 25 Total short-term borrowings $ 7,982 $ 4,992 Long-Term: AmeriHome senior notes, net of fair value adjustment $ 313 $ 315 Credit linked notes, net 450 992 Total long-term borrowings $ 763 $ 1,307 Total other borrowings $ 8,745 $ 6,299 The Company's outstanding credit linked note issuances are detailed in the tables below: September 30, 2023 Description Issuance Date Maturity Date Interest Rate Principal Debt Issuance Costs (in millions) Residential mortgage loans (1) December 12, 2022 October 25, 2052 SOFR + 7.80% $ 91 $ 2 Residential mortgage loans (2) June 30, 2022 April 25, 2052 SOFR + 6.00% 181 3 Residential mortgage loans (4) December 29, 2021 July 25, 2059 SOFR + 4.67% 194 3 Total $ 466 $ 8 December 31, 2022 Description Issuance Date Maturity Date Interest Rate Principal Debt Issuance Costs (in millions) Residential mortgage loans (1) December 12, 2022 October 25, 2052 SOFR + 7.80% $ 95 $ 2 Residential mortgage loans (2) June 30, 2022 April 25, 2052 SOFR + 6.00% 189 3 Equity fund resource loans (3) June 23, 2022 June 30, 2028 SOFR + 6.75% 300 4 Residential mortgage loans (4) December 29, 2021 July 25, 2059 SOFR + 4.67% 202 3 Warehouse loans (5) June 28, 2021 December 30, 2024 LIBOR + 5.50% 242 2 Total $ 1,028 $ 14 (1) There are multiple classes of these notes, each with an interest rate of SOFR plus a spread that ranges from 2.25% to 11.00% (or, a weighted average spread of 7.80%) on a reference pool balance of $1.8 billion as of September 30, 2023 and December 31, 2022. (2) There are multiple classes of these notes, each with an interest rate of SOFR plus a spread that ranges from 2.25% to 15.00% (or, a weighted average spread of 6.00%) on a reference pool balance of $3.6 billion and $3.8 billion as of September 30, 2023 and December 31, 2022, respectively. (3) These notes had a reference pool balance of $1.6 billion as of December 31, 2022. (4) There are six classes of these notes, each with an interest rate of SOFR plus a spread that ranges from 3.15% to 8.50% (or, a weighted average spread of 4.67%) on a reference pool balance of $3.8 billion and $4.0 billion as of September 30, 2023 and December 31, 2022, respectively. (5) These notes had a reference pool balance of $689 million as of December 31, 2022. The Company's subordinated debt issuances are detailed in the tables below: September 30, 2023 Description Issuance Date Maturity Date Interest Rate Principal Debt Issuance Costs (in millions) WAL fixed-to-variable-rate (1) June 2021 June 15, 2031 3.00 % $ 600 $ 7 WAB fixed-to-variable-rate (2) May 2020 June 1, 2030 5.25 % 225 1 Total $ 825 $ 8 December 31, 2022 Description Issuance Date Maturity Date Interest Rate Principal Debt Issuance Costs (in millions) WAL fixed-to-variable-rate (1) June 2021 June 15, 2031 3.00 % $ 600 $ 7 WAB fixed-to-variable-rate (2) May 2020 June 1, 2030 5.25 % 225 1 Total $ 825 $ 8 (1) Notes are redeemable, in whole or in part, beginning on June 15, 2026 at their principal amount plus accrued and unpaid interest and has a fixed interest rate of 3.00%. The notes also convert to a variable rate of three-month SOFR plus 225 basis points on this date. (2) Debt is redeemable, in whole or in part, on or after June 1, 2025 at its principal amount plus accrued and unpaid interest and has a fixed interest rate of 5.25% through June 1, 2025 and then converts to a variable rate per annum equal to three-month SOFR plus 512 basis points.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2023
Equity [Abstract]
Summary of Changes in 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 September 30, 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, June 30, 2023 $ (618.3) $ (0.3) $ 6.9 $ 1.2 $ (610.5) Other comprehensive loss before reclassifications (120.2) — (1.2) — (121.4) Amounts reclassified from AOCI (0.4) — — — (0.4) Net current-period other comprehensive loss (120.6) — (1.2) — (121.8) Balance, September 30, 2023 $ (738.9) $ (0.3) $ 5.7 $ 1.2 $ (732.3) Balance, June 30, 2022 $ (521.1) $ (0.3) $ 3.5 $ — $ (517.9) Other comprehensive (loss) income before reclassifications (219.9) — 1.6 — (218.3) Amounts reclassified from AOCI — — — — — Net current-period other comprehensive (loss) income (219.9) — 1.6 — (218.3) Balance, September 30, 2022 $ (741.0) $ (0.3) $ 5.1 $ — $ (736.2) Nine Months Ended September 30, 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 (loss) income before reclassifications (94.3) — 2.7 1.2 (90.4) Amounts reclassified from AOCI 19.1 — — — 19.1 Net current-period other comprehensive (loss) income (75.2) — 2.7 1.2 (71.3) Balance, September 30, 2023 $ (738.9) $ (0.3) $ 5.7 $ 1.2 $ (732.3) Balance, December 31, 2021 $ 16.7 $ (0.3) $ (0.7) $ — $ 15.7 Other comprehensive (loss) income before reclassifications (752.3) — 5.8 — (746.5) Amounts reclassified from AOCI (5.4) — — — (5.4) Net current-period other comprehensive (loss) income (757.7) — 5.8 — (751.9) Balance, September 30, 2022 $ (741.0) $ (0.3) $ 5.1 $ — $ (736.2)

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Assets at Fair Value	As of September 30, 2023 and December 31, 2022, the following amounts are reflected on the Consolidated Balance Sheet related to cumulative basis adjustments for outstanding fair value hedges: September 30, 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 (2) $ 3,863 $ 128 $ 447 $ 17 (1) Included in the carrying value of the hedged assets/(liabilities). (2) As of September 30, 2023, included portfolio layer method derivative instruments with $3.5 billion designated as the hedged amount (from a closed portfolio of prepayable fixed rate loans with a carrying value of $6.8 billion). The cumulative basis adjustment included in the carrying value of these hedged items totaled $98 million.
Derivative Instruments, Gain (Loss)	For loans, the gain or loss on the hedged item is included in interest income, as shown in the table below. Three Months Ended September 30, 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 $ 76.5 $ (76.0) $ 27.5 $ (27.5) Nine Months Ended September 30, 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 $ 111.2 $ (110.7) $ 76.3 $ (76.2) The following table summarizes the net gain (loss) on derivatives included in income: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Net gain (loss) on loan origination and sale activities: Interest rate lock commitments $ (5.2) $ (39.3) $ (4.9) $ (36.9) Forward contracts 68.7 145.3 87.5 487.6 Interest rate swaps (8.4) (8.6) (11.8) (8.6) Other contracts (0.3) 1.6 1.5 (8.2) Total gain $ 54.8 $ 99.0 $ 72.3 $ 433.9 Net loan servicing revenue: Forward contracts $ (19.2) $ (18.0) $ (34.0) $ (60.9) Futures contracts (2.4) 2.4 12.3 (41.5) Interest rate swaps (82.4) (52.8) (100.0) (52.8) Total loss $ (104.0) $ (68.4) $ (121.7) $ (155.2)
Schedule of Fair Value of the Company's Derivative Instruments	The following table summarizes the fair value of the Company's derivative instruments on a gross basis as of September 30, 2023, December 31, 2022, and September 30, 2022. The change in the notional amounts of these derivatives from September 30, 2022 to September 30, 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. September 30, 2023 December 31, 2022 September 30, 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 contracts $ 3,899 $ 128 $ — $ 476 $ 18 $ — $ 483 $ 22 $ — Total $ 3,899 $ 128 $ — $ 476 $ 18 $ — $ 483 $ 22 $ — Derivatives not designated as hedging instruments (1): Foreign currency contracts $ 74 $ 1 $ — $ 250 $ 1 $ 9 $ 146 $ 2 $ 1 Forward purchase contracts 3,397 1 20 2,709 1 13 8,226 3 249 Forward sales contracts 6,256 42 1 4,985 16 8 11,792 380 6 Futures purchase contracts (2), (3) 150 — — — — — — — — Futures sales contracts (2), (3) 13,695 — — 8,706 — — 8,121 — — Interest rate lock commitments 1,761 3 6 1,459 5 3 1,918 3 31 Interest rate contracts 3,187 20 20 1,538 6 6 2,155 5 5 Risk participation agreements 44 — — 48 — — — — — Total $ 28,564 $ 67 $ 47 $ 19,695 $ 29 $ 39 $ 32,358 $ 393 $ 292 Margin 66 25 4 1 (100) (11) Total, including margin $ 28,564 $ 133 $ 72 $ 19,695 $ 33 $ 40 $ 32,358 $ 293 $ 281 (1) Relate to economic hedging arrangements. (2) The Company enters into futures purchase and sales contracts that are subject to daily remargining and almost all of which are based on three-month SOFR to hedge against its MSR valuation exposure. The notional amount on these contracts is substantial as these contracts have a short duration and are intended to cover the longer duration of MSR hedges. (3) The notional amounts previously reported for December 31, 2022 and September 30, 2022 have been adjusted to account for the impact of offsetting contracts. To close a futures contract prior to settlement, the Company purchases an offsetting future with the same terms as the original contract and these contracts no longer require settlement. 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 Sheet, as summarized in the table below: September 30, 2023 December 31, 2022 September 30, 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 $ 1 $ — $ 1 $ 1 $ — $ 1 $ 3 $ — $ 3 Forward sales contracts 42 — 42 13 — 13 360 — 360 Interest rate contracts 148 — 148 18 — 18 22 — 22 Margin 66 — 66 4 — 4 (100) — (100) Netting — (43) (43) — (17) (17) — (233) (233) $ 257 $ (43) $ 214 $ 36 $ (17) $ 19 $ 285 $ (233) $ 52 Liabilities Forward purchase contracts $ (20) $ — $ (20) $ (12) $ — $ (12) $ (242) $ — $ (242) Forward sales contracts (1) — (1) (8) — (8) (6) — (6) Margin (25) — (25) (1) — (1) 11 — 11 Netting — 43 43 — 17 17 — 233 233 $ (46) $ 43 $ (3) $ (21) $ 17 $ (4) $ (237) $ 233 $ (4) Derivatives not subject to master netting arrangements: Assets Foreign currency contracts $ 1 $ — $ 1 $ 1 $ — $ 1 $ 2 $ — $ 2 Forward sales contracts — — — 3 — 3 20 — 20 Interest rate lock commitments 3 — 3 5 — 5 3 — 3 Interest rate contracts — — — 6 — 6 5 — 5 $ 4 $ — $ 4 $ 15 $ — $ 15 $ 30 $ — $ 30 Liabilities Foreign currency contracts $ — $ — $ — $ (9) $ — $ (9) $ (1) $ — $ (1) Forward purchase contracts — — — (1) — (1) (7) — (7) Interest rate lock commitments (6) — (6) (3) — (3) (31) — (31) Interest rate contracts (20) — (20) (6) — (6) (5) — (5) $ (26) $ — $ (26) $ (19) $ — $ (19) $ (44) $ — $ (44) Total derivatives and margin Assets $ 261 $ (43) $ 218 $ 51 $ (17) $ 34 $ 315 $ (233) $ 82 Liabilities $ (72) $ 43 $ (29) $ (40) $ 17 $ (23) $ (281) $ 233 $ (48)

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table presents the calculation of basic and diluted EPS and summarizes the weighted average common shares excluded from the diluted EPS calculation due to their antidilutive effect: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions, except per share amounts) Weighted average shares - basic 108.3 107.5 108.3 107.0 Dilutive effect of stock awards 0.2 0.4 0.1 0.4 Weighted average shares - diluted 108.5 107.9 108.4 107.4 Net income available to common stockholders $ 213.4 $ 260.8 $ 564.9 $ 754.7 Earnings per Common Share: Basic $ 1.97 $ 2.43 $ 5.22 $ 7.06 Diluted 1.97 2.42 5.21 7.03 Antidilutive restricted stock outstanding — — 0.1 —

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 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: September 30, 2023 December 31, 2022 (in millions) Commitments to extend credit, including unsecured loan commitments of $1,024 at September 30, 2023 and $1,209 at December 31, 2022 $ 14,148 $ 18,674 Credit card commitments and financial guarantees 414 379 Letters of credit, including unsecured letters of credit of $4 at September 30, 2023 and $7 at December 31, 2022 246 265 Total $ 14,808 $ 19,318

Fair Value Accounting (Tables)

Fair Value Accounting (Tables)	9 Months Ended
	Sep. 30, 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: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Unrealized (losses) gains $ (1.6) $ 2.1 $ 3.6 $ 7.7 Changes included in OCI, net of tax (1.2) 1.6 2.7 5.8
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 September 30, 2023 (in millions) Assets: Available-for-sale debt securities CLO $ — $ 2,165 $ — $ 2,165 Commercial MBS issued by GSEs — 199 — 199 Corporate debt securities — 360 — 360 Private label residential MBS — 1,068 — 1,068 Residential MBS issued by GSEs — 1,858 — 1,858 Tax-exempt — 775 — 775 U.S. Treasury securities 3,198 — — 3,198 Other 28 38 — 66 Total AFS debt securities $ 3,226 $ 6,463 $ — $ 9,689 Equity securities CRA investments 24 — — 24 Preferred stock 97 — — 97 Total equity securities $ 121 $ — $ — $ 121 Loans HFS (2) $ — $ 1,731 $ 3 $ 1,734 MSRs — — 1,233 1,233 Derivative assets (1) — 192 3 195 Liabilities: Junior subordinated debt (3) $ — $ — $ 59 $ 59 Derivative liabilities (1) — 41 6 47 (1) See "Note 11. Derivatives and Hedging Activities." In addition, the carrying value of loans is decreased by $128 million as of September 30, 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. Derivative assets and liabilities exclude margin of $66 million and $25 million, respectively. (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 December 31, 2022 (in millions) 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 (2) $ — $ 1,172 $ 1 $ 1,173 Mortgage servicing rights — — 1,148 1,148 Derivative assets (1) — 42 5 47 Liabilities: Junior subordinated debt (3) $ — $ — $ 63 $ 63 Derivative liabilities (1) — 36 3 39 (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. Derivative assets and liabilities exclude margin of $4 million and $1 million, respectively. (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.
Change in Level 3 Liabilities Measured at Fair Value on Recurring Basis	The 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 September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Beginning balance $ (57.3) $ (61.8) $ (62.5) $ (67.4) Change in fair value (1) (1.6) 2.1 3.6 7.7 Ending balance $ (58.9) $ (59.7) $ (58.9) $ (59.7) (1) Unrealized (losses) gains attributable to changes in the fair value of junior subordinated debt are recorded in OCI, net of tax, and totaled $(1.2) million and $1.6 million for three months ended September 30, 2023 and 2022, respectively, and $2.7 million and $5.8 million for the nine months ended September 30, 2023 and 2022, respectively. The change in Level 3 assets and liabilities measured at fair value on a recurring basis included in income was as follows: Three Months Ended September 30, 2023 Nine Months Ended September 30, 2023 MSRs Net IRLCs (1) MSRs Net IRLCs (1) (in millions) Balance, beginning of period $ 1,007 $ 2 $ 1,148 $ 2 Purchases and additions 266 4,616 653 11,772 Sales and payments (112) — (611) — Settlement of IRLCs upon acquisition or origination of loans HFS — (4,619) — (11,773) Change in fair value 98 (2) 114 (4) Mark to market adjustments — — 4 — Realization of cash flows (26) — (75) — Balance, end of period $ 1,233 $ (3) $ 1,233 $ (3) Changes in unrealized gains for the period (2) $ 97 $ (3) $ 128 $ (3) Three Months Ended September 30, 2022 Nine Months Ended September 30, 2022 MSRs Net IRLCs (1) MSRs Net IRLCs (1) (in millions) Balance, beginning of period $ 826 $ 12 $ 698 $ 9 Purchases and additions 180 5,205 578 16,104 Sales and payments — — (350) — Settlement of IRLCs upon acquisition or origination of loans HFS — (5,235) — (16,099) Change in fair value 63 (10) 206 (42) Realization of cash flows (25) — (88) — Balance, end of period $ 1,044 $ (28) $ 1,044 $ (28) Changes in unrealized gains for the period (2) $ 62 $ (28) $ 150 $ (28) (1) IRLC asset and liability positions are presented net. (2) Amounts recognized as part of non-interest income. The significant unobservable inputs used in the fair value measurements of these Level 3 assets and liabilities were as follows: September 30, 2023 Asset/liability Key inputs Range Weighted average MSRs: Option adjusted spread (in basis points) 88 - 252 233 Conditional prepayment rate (1) 8.6% - 18.4% 13.7% Recapture rate 20.0% - 20.0% 20.0% Servicing fee rate (in basis points) 25.0 - 56.5 33.9 Cost to service $93 - $100 $ 94 IRLCs: Servicing fee multiple 3.2 - 5.8 4.5 Pull-through rate 76% - 100% 91% December 31, 2022 Asset/liability Key inputs Range Weighted average MSRs: Option adjusted spread (in basis points) 190 - 621 378 Conditional prepayment rate (1) 8.5% - 18.5% 13.4% Recapture rate 20.0% - 20.0% 20.0% Servicing fee rate (in basis points) 25.0 - 56.5 33.2 Cost to service $87 - $94 $90 IRLCs: Servicing fee multiple 2.9 - 5.5 4.3 Pull-through rate 69% - 100% 89% (1) Lifetime total prepayment speed annualized. For Level 3 assets measured at fair value on a nonrecurring basis as of period end, the significant unobservable inputs used in the fair value measurements were as follows: September 30, 2023 Valuation Technique(s) Significant Unobservable Inputs Range (in millions) Loans HFI $ 367 Collateral method Third party appraisal Costs to sell 6.0% to 10.0% Discounted cash flow method Discount rate Contractual loan rate 3.0% to 8.0% Scheduled cash collections Probability of default 0% to 20.0% Proceeds from non-real estate collateral Loss given default 0% to 70.0% Other assets acquired through foreclosure 8 Collateral method Third party appraisal Costs to sell 4.0% to 10.0% December 31, 2022 Valuation Technique(s) Significant Unobservable Inputs Range (in millions) Loans HFI $ 295 Collateral method Third party appraisal Costs to sell 6.0% to 10.0% Discounted cash flow method Discount rate Contractual loan rate 3.0% to 8.0% Scheduled cash collections Probability of default 0% to 20.0% Proceeds from non-real estate collateral Loss given default 0% to 70.0% Other assets acquired through foreclosure 11 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%
Assets Measured at Fair Value on Nonrecurring Basis	The significant unobservable inputs used in the fair value measurements of these Level 3 liabilities were as follows: September 30, 2023 Valuation Technique Significant Unobservable Inputs Input Value (in millions) Junior subordinated debt $ 59 Discounted cash flow Implied credit rating of the Company 9.88 % December 31, 2022 Valuation Technique Significant Unobservable Inputs Input Value (in millions) Junior subordinated debt $ 63 Discounted cash flow Implied credit rating of the Company 8.13 % 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 September 30, 2023: Loans HFI $ 367 $ — $ — $ 367 Other assets acquired through foreclosure 8 — — 8 As of December 31, 2022: Loans HFI $ 295 $ — $ — $ 295 Other assets acquired through foreclosure 11 — — 11
Estimated Fair Value of Financial Instruments	The following is a summary of the difference between the aggregate fair value and the aggregate UPB of loans HFS for which the FVO has been elected: September 30, 2023 December 31, 2022 Fair value UPB Difference Fair value UPB Difference (in millions) Loans HFS: Current through 89 days delinquent $ 1,732 $ 1,705 $ 27 $ 1,172 $ 1,138 $ 34 90 days or more delinquent 2 3 (1) 1 1 — Total $ 1,734 $ 1,708 $ 26 $ 1,173 $ 1,139 $ 34 The estimated fair value of the Company’s financial instruments is as follows: September 30, 2023 Carrying Amount Fair Value Level 1 Level 2 Level 3 Total (in millions) Financial assets: Investment securities: HTM $ 1,401 $ — $ 1,140 $ — $ 1,140 AFS 9,689 3,226 6,463 — 9,689 Equity 121 121 — — 121 Derivative assets (1) 195 — 192 3 195 Loans HFS 1,766 — 1,743 22 1,765 Loans HFI, net 49,120 — — 45,202 45,202 Mortgage servicing rights 1,233 — — 1,233 1,233 Accrued interest receivable 348 — 348 — 348 Financial liabilities: Deposits $ 54,287 $ — $ 54,297 $ — $ 54,297 Other borrowings 8,745 — 8,659 — 8,659 Qualifying debt 890 — 680 71 751 Derivative liabilities (1) 47 — 41 6 47 Accrued interest payable 176 — 176 — 176 (1) Derivative assets and liabilities exclude margin of $66 million and $25 million, respectively. 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 (1) 51 — 42 5 47 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 $ — $ 54,297 $ — $ 54,297 Other borrowings 6,299 — 6,261 — 6,261 Qualifying debt 893 — 735 75 810 Derivative liabilities (1) 40 — 36 3 39 Accrued interest payable 35 — 35 — 35 (1) Derivative assets and liabilities exclude margin of $4 million and $1 million, respectively.

Segments (Tables)

Segments (Tables)	9 Months Ended
	Sep. 30, 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 September 30, 2023: (in millions) Assets: Cash, cash equivalents, and investment securities $ 14,920 $ 11 $ 125 $ 14,784 Loans HFS 1,766 — 1,766 — Loans HFI, net of deferred fees and costs 49,447 28,720 20,727 — Less: allowance for credit losses (327) (277) (50) — Net loans HFI 49,120 28,443 20,677 — Other assets acquired through foreclosure, net 8 8 — — Goodwill and other intangible assets, net 672 292 380 — Other assets 4,405 409 1,902 2,094 Total assets $ 70,891 $ 29,163 $ 24,850 $ 16,878 Liabilities: Deposits $ 54,287 $ 22,643 $ 25,094 $ 6,550 Borrowings and qualifying debt 9,635 9 2,164 7,462 Other liabilities 1,223 136 264 823 Total liabilities 65,145 22,788 27,522 14,835 Allocated equity: 5,746 2,672 1,805 1,269 Total liabilities and stockholders' equity $ 70,891 $ 25,460 $ 29,327 $ 16,104 Excess funds provided (used) — (3,703) 4,477 (774) Income Statement: Three Months Ended September 30, 2023: (in millions) Net interest income $ 587.0 $ 331.5 $ 243.8 $ 11.7 Provision for (recovery of) credit losses 12.1 14.1 (3.0) 1.0 Net interest income after provision for credit losses 574.9 317.4 246.8 10.7 Non-interest income 129.2 25.9 89.4 13.9 Non-interest expense 426.2 147.2 267.3 11.7 Income before income taxes 277.9 196.1 68.9 12.9 Income tax expense (benefit) 61.3 64.9 28.8 (32.4) Net income $ 216.6 $ 131.2 $ 40.1 $ 45.3 Nine Months Ended September 30, 2023: (in millions) Net interest income $ 1,747.2 $ 1,077.5 $ 647.8 $ 21.9 Provision for credit losses 53.3 29.7 0.4 23.2 Net interest income (expense) after provision for credit losses 1,693.9 1,047.8 647.4 (1.3) Non-interest income 190.2 (40.1) 226.6 3.7 Non-interest expense 1,161.5 430.9 691.6 39.0 Income (loss) before provision for income taxes 722.6 576.8 182.4 (36.6) Income tax expense (benefit) 148.1 125.1 39.4 (16.4) Net income (loss) $ 574.5 $ 451.7 $ 143.0 $ (20.2) 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 September 30, 2022: (in millions) Net interest income $ 602.1 $ 413.0 $ 235.0 $ (45.9) Provision for credit losses 28.5 19.9 7.6 1.0 Net interest income (expense) after provision for credit losses 573.6 393.1 227.4 (46.9) Non-interest income 61.8 16.1 44.2 1.5 Non-interest expense 305.8 111.0 178.4 16.4 Income (loss) before income taxes 329.6 298.2 93.2 (61.8) Income tax expense (benefit) 65.6 71.0 22.3 (27.7) Net income (loss) $ 264.0 $ 227.2 $ 70.9 $ (34.1) Nine Months Ended September 30, 2022: (in millions) Net interest income $ 1,576.6 $ 1,118.3 $ 637.7 $ (179.4) Provision for (recovery of) credit losses 65.0 53.1 12.9 (1.0) Net interest income (expense) after provision for credit losses 1,511.6 1,065.2 624.8 (178.4) Non-interest income 263.1 51.0 198.0 14.1 Non-interest expense 823.3 341.4 442.5 39.4 Income (loss) before income taxes 951.4 774.8 380.3 (203.7) Income tax expense (benefit) 187.1 184.4 90.8 (88.1) Net income (loss) $ 764.3 $ 590.4 $ 289.5 $ (115.6)

Mergers, Acquisitions and Dis_2

Mergers, Acquisitions and Dispositions (Tables)	9 Months Ended
	Sep. 30, 2023
Business Combination and Asset Acquisition [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The fair value amounts of identifiable assets acquired and liabilities assumed in the DST acquisition are as follows: January 25, 2022 (in millions) Assets acquired: Cash and cash equivalents $ 0.6 Identified intangible assets 20.1 Other assets 0.1 Total assets $ 20.8 Liabilities assumed: Other liabilities $ 0.4 Total liabilities 0.4 Net assets acquired $ 20.4 Consideration paid Cash $ 50.6 Contingent consideration 6.4 Total consideration $ 57.0 Goodwill $ 36.6
Schedule of Acquired Intangible Assets	In connection with the acquisition, the Company acquired identifiable intangible assets totaling $20.1 million, as detailed in the table below: Acquisition Date Fair Value Estimated Useful Life (in millions) (in years) Customer relationships $ 15.7 7 Developed technology 4.1 5 Trade name 0.3 10 Total $ 20.1

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($) Subsidiary
Significant Of Accounting Policies [Line Items]
Number of unconsolidated subsidiaries | Subsidiary	8
Goodwill	$ 527
Commercial Segment
Significant Of Accounting Policies [Line Items]
Goodwill	290
Consumer Related Segment
Significant Of Accounting Policies [Line Items]
Goodwill	$ 237

Investment Securities - Carryin

Investment Securities - Carrying Amounts and Fair Values of Investment Securities, Held-To-Maturity (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	$ 1,401	$ 1,289
Gross unrealized gains	0	0
Gross unrealized (losses)	(261)	(177)
Investment securities - HTM, fair value	1,140	1,112
Private label residential MBS
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	189	198
Gross unrealized gains	0	0
Gross unrealized (losses)	(51)	(39)
Investment securities - HTM, fair value	138	159
Tax-exempt
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	1,212	1,091
Gross unrealized gains	0	0
Gross unrealized (losses)	(210)	(138)
Investment securities - HTM, fair value	$ 1,002	$ 953

Investment Securities - Carry_2

Investment Securities - Carrying Amounts and Fair Values of Investment Securities, Available-For-Sale (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized cost	$ 10,672	$ 7,973
Gross unrealized gains	4	9
Gross unrealized (losses)	(987)	(890)
Fair value	9,689	7,092
CLO
Debt Securities, Available-for-sale [Line Items]
Amortized cost	2,183	2,796
Gross unrealized gains	1	0
Gross unrealized (losses)	(19)	(90)
Fair value	2,165	2,706
Commercial MBS issued by GSEs
Debt Securities, Available-for-sale [Line Items]
Amortized cost	212	104
Gross unrealized gains	0	1
Gross unrealized (losses)	(13)	(8)
Fair value	199	97
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized cost	411	429
Gross unrealized gains	0	0
Gross unrealized (losses)	(51)	(39)
Fair value	360	390
Private label residential MBS
Debt Securities, Available-for-sale [Line Items]
Amortized cost	1,340	1,442
Gross unrealized gains	0	0
Gross unrealized (losses)	(272)	(243)
Fair value	1,068	1,199
Residential MBS issued by GSEs
Debt Securities, Available-for-sale [Line Items]
Amortized cost	2,333	2,123
Gross unrealized gains	0	0
Gross unrealized (losses)	(475)	(383)
Fair value	1,858	1,740
Tax-exempt
Debt Securities, Available-for-sale [Line Items]
Amortized cost	918	1,004
Gross unrealized gains	0	2
Gross unrealized (losses)	(143)	(115)
Fair value	775	891
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized cost	3,201
Gross unrealized gains	0
Gross unrealized (losses)	(3)
Fair value	3,198
Other
Debt Securities, Available-for-sale [Line Items]
Amortized cost	74	75
Gross unrealized gains	3	6
Gross unrealized (losses)	(11)	(12)
Fair value	$ 66	$ 69

Investment Securities - Additio

Investment Securities - Additional Information (Detail) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($) security	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) security	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) security
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	$ 121		$ 121		$ 160
Unrealized gains (losses) on assets measured at fair value, net	$ 5.1	$ (3.7)	$ (3.3)	$ (20.4)
Number of AFS debt securities in an unrealized loss position | security	869		869		832
Fair value	$ 9,689		$ 9,689		$ 7,092
Provision for Credit Losses	0.3	0	21.8	0
Charge-offs	0		17.1
Accrued interest receivable	5		5		3
Carrying value of securities sold	7	5	821	132
Net gain (loss) recognized	0.1	$ 0	(26)	$ 6.7
Asset Pledged as Collateral
Debt Securities, Available-for-sale [Line Items]
Fair value	$ 5,500		$ 5,500		$ 1,700

Investment Securities - Unreali

Investment Securities - Unrealized Losses and Fair Value of Investment Securities in Continuous Unrealized Loss Position (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Less Than Twelve Months, Gross Unrealized Losses	$ 26	$ 319
Less Than Twelve Months, Fair Value	3,201	4,433
More Than Twelve Months, Gross Unrealized Losses	961	571
More Than Twelve Months, Fair Value	5,403	2,467
Total Gross Unrealized Losses	987	890
Total Fair Value	8,604	6,900
CLO
Debt Securities, Available-for-sale [Line Items]
Less Than Twelve Months, Gross Unrealized Losses	1	81
Less Than Twelve Months, Fair Value	129	2,467
More Than Twelve Months, Gross Unrealized Losses	18	9
More Than Twelve Months, Fair Value	1,757	216
Total Gross Unrealized Losses	19	90
Total Fair Value	1,886	2,683
Commercial MBS issued by GSEs
Debt Securities, Available-for-sale [Line Items]
Less Than Twelve Months, Gross Unrealized Losses	2	4
Less Than Twelve Months, Fair Value	145	46
More Than Twelve Months, Gross Unrealized Losses	11	4
More Than Twelve Months, Fair Value	53	14
Total Gross Unrealized Losses	13	8
Total Fair Value	198	60
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Less Than Twelve Months, Gross Unrealized Losses	0	28
Less Than Twelve Months, Fair Value	0	263
More Than Twelve Months, Gross Unrealized Losses	51	11
More Than Twelve Months, Fair Value	352	120
Total Gross Unrealized Losses	51	39
Total Fair Value	352	383
Corporate Bond Securities, With ACL
Debt Securities, Available-for-sale [Line Items]
Total Gross Unrealized Losses	29
Total Fair Value	143
Private label residential MBS
Debt Securities, Available-for-sale [Line Items]
Less Than Twelve Months, Gross Unrealized Losses	1	27
Less Than Twelve Months, Fair Value	25	279
More Than Twelve Months, Gross Unrealized Losses	271	216
More Than Twelve Months, Fair Value	1,016	912
Total Gross Unrealized Losses	272	243
Total Fair Value	1,041	1,191
Residential MBS issued by GSEs
Debt Securities, Available-for-sale [Line Items]
Less Than Twelve Months, Gross Unrealized Losses	12	82
Less Than Twelve Months, Fair Value	380	600
More Than Twelve Months, Gross Unrealized Losses	463	301
More Than Twelve Months, Fair Value	1,475	1,101
Total Gross Unrealized Losses	475	383
Total Fair Value	1,855	1,701
Tax-exempt
Debt Securities, Available-for-sale [Line Items]
Less Than Twelve Months, Gross Unrealized Losses	6	93
Less Than Twelve Months, Fair Value	69	752
More Than Twelve Months, Gross Unrealized Losses	137	22
More Than Twelve Months, Fair Value	706	78
Total Gross Unrealized Losses	143	115
Total Fair Value	775	830
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Less Than Twelve Months, Gross Unrealized Losses	3
Less Than Twelve Months, Fair Value	2,444
More Than Twelve Months, Gross Unrealized Losses	0
More Than Twelve Months, Fair Value	0
Total Gross Unrealized Losses	3
Total Fair Value	2,444
Other
Debt Securities, Available-for-sale [Line Items]
Less Than Twelve Months, Gross Unrealized Losses	1	4
Less Than Twelve Months, Fair Value	9	26
More Than Twelve Months, Gross Unrealized Losses	10	8
More Than Twelve Months, Fair Value	44	26
Total Gross Unrealized Losses	11	12
Total Fair Value	$ 53	$ 52

Investment Securities - Allowan

Investment Securities - Allowance for Credit Losses, Available-for-Sale (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 4.4		$ 0
Provision for Credit Losses	0.3	$ 0	21.8	$ 0
Charge-offs	0		(17.1)
Recoveries	0		0
Ending balance	$ 4.7		$ 4.7

Investment Securities - Allow_2

Investment Securities - Allowance for Credit Losses, Held-to-Maturity (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance			$ 5
Ending balance	$ 7		7
Tax-exempt
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	6	$ 3.2	5.2	$ 5.2
Provision for Credit Losses	0.7	1.2	1.5	(0.8)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	$ 6.7	$ 4.4	$ 6.7	$ 4.4

Investment Securities - Investm

Investment Securities - Investment Securities by Credit Rating Type (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	$ 1,401	$ 1,289
Fair value	9,689	7,092
Investment securities - equity	121	160
AAA
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	1,173	1,479
Investment securities - equity	0	0
Split-rated AAA/AA+
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	5,270	1,852
Investment securities - equity	24	24
AA+ to AA-
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	2,342	2,563
Investment securities - equity	0	0
A+ to A-
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	496	783
Investment securities - equity	0	0
BBB+ to BBB-
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	254	343
Investment securities - equity	52	82
BB+ and below
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	63	6
Investment securities - equity	34	17
Unrated
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	1,401	1,289
Fair value	91	66
Investment securities - equity	11	37
Private label residential MBS
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	189	198
Fair value	1,068	1,199
Private label residential MBS | AAA
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	1,044	1,158
Private label residential MBS | Split-rated AAA/AA+
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	0	0
Private label residential MBS | AA+ to AA-
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	24	41
Private label residential MBS | A+ to A-
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	0	0
Private label residential MBS | BBB+ to BBB-
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	0	0
Private label residential MBS | BB+ and below
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	0	0
Private label residential MBS | Unrated
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	189	198
Fair value	0	0
Tax-exempt
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	1,212	1,091
Fair value	775	891
Tax-exempt | AAA
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	8	11
Tax-exempt | Split-rated AAA/AA+
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	15	15
Tax-exempt | AA+ to AA-
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	329	392
Tax-exempt | A+ to A-
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	348	425
Tax-exempt | BBB+ to BBB-
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	0	0
Tax-exempt | BB+ and below
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	0	0
Fair value	0	0
Tax-exempt | Unrated
Schedule of Held-to-Maturity Securities [Line Items]
Amortized cost	1,212	1,091
Fair value	75	48
CLO
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	2,165	2,706
CLO | AAA
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	121	310
CLO | Split-rated AAA/AA+
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
CLO | AA+ to AA-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	1,980	2,121
CLO | A+ to A-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	64	275
CLO | BBB+ to BBB-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
CLO | BB+ and below
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
CLO | Unrated
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Commercial MBS issued by GSEs
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	199	97
Commercial MBS issued by GSEs | AAA
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Commercial MBS issued by GSEs | Split-rated AAA/AA+
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	199	97
Commercial MBS issued by GSEs | AA+ to AA-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Commercial MBS issued by GSEs | A+ to A-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Commercial MBS issued by GSEs | BBB+ to BBB-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Commercial MBS issued by GSEs | BB+ and below
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Commercial MBS issued by GSEs | Unrated
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Corporate debt securities
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	360	390
Corporate debt securities | AAA
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Corporate debt securities | Split-rated AAA/AA+
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Corporate debt securities | AA+ to AA-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Corporate debt securities | A+ to A-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	75	74
Corporate debt securities | BBB+ to BBB-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	225	316
Corporate debt securities | BB+ and below
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	60	0
Corporate debt securities | Unrated
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Residential MBS issued by GSEs
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	1,858	1,740
Residential MBS issued by GSEs | AAA
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Residential MBS issued by GSEs | Split-rated AAA/AA+
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	1,858	1,740
Residential MBS issued by GSEs | AA+ to AA-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Residential MBS issued by GSEs | A+ to A-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Residential MBS issued by GSEs | BBB+ to BBB-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Residential MBS issued by GSEs | BB+ and below
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Residential MBS issued by GSEs | Unrated
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
U.S. Treasury securities
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	3,198
U.S. Treasury securities | AAA
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0
U.S. Treasury securities | Split-rated AAA/AA+
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	3,198
U.S. Treasury securities | AA+ to AA-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0
U.S. Treasury securities | A+ to A-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0
U.S. Treasury securities | BBB+ to BBB-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0
U.S. Treasury securities | BB+ and below
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0
U.S. Treasury securities | Unrated
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0
Other
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	66	69
Other | AAA
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Other | Split-rated AAA/AA+
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	0	0
Other | AA+ to AA-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	9	9
Other | A+ to A-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	9	9
Other | BBB+ to BBB-
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	29	27
Other | BB+ and below
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	3	6
Other | Unrated
Schedule of Held-to-Maturity Securities [Line Items]
Fair value	16	18
Common Stock
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity		3
Common Stock | AAA
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity		0
Common Stock | Split-rated AAA/AA+
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity		0
Common Stock | AA+ to AA-
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity		0
Common Stock | A+ to A-
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity		0
Common Stock | BBB+ to BBB-
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity		0
Common Stock | BB+ and below
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity		0
Common Stock | Unrated
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity		3
CRA investments
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity	24	49
CRA investments | AAA
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity	0	0
CRA investments | Split-rated AAA/AA+
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity	24	24
CRA investments | AA+ to AA-
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity	0	0
CRA investments | A+ to A-
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity	0	0
CRA investments | BBB+ to BBB-
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity	0	0
CRA investments | BB+ and below
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity	0	0
CRA investments | Unrated
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity	0	25
Preferred Stock
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity	97	108
Preferred Stock | AAA
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity	0	0
Preferred Stock | Split-rated AAA/AA+
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity	0	0
Preferred Stock | AA+ to AA-
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity	0	0
Preferred Stock | A+ to A-
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity	0	0
Preferred Stock | BBB+ to BBB-
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity	52	82
Preferred Stock | BB+ and below
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity	34	17
Preferred Stock | Unrated
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities - equity	$ 11	$ 9

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Fair Value of Investment Securities by Contractual Maturities (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Amortized Cost
Securities held to maturity, Due in one year or less, Amortized Cost	$ 21
Securities held to maturity, After one year through five years, Amortized Cost	14
Securities held to maturity, After five years through ten years, Amortized Cost	77
Securities held to maturity, After ten years, Amortized Cost	1,100
Securities held to maturity, Mortgage backed securities, Amortized Cost	189
Amortized cost	1,401	$ 1,289
Estimated Fair Value
Securities held to maturity, Due in one year or less, Estimated Fair Value	21
Securities held to maturity, After one year through five years, Estimated Fair Value	14
Securities held to maturity, After five years through ten years, Estimated Fair Value	64
Securities held to maturity, After ten years, Estimated Fair Value	903
Debt securities, held to maturity, Mortgage backed securities, Estimated Fair Value	138
Investment securities - HTM, fair value	1,140	1,112
Amortized Cost
Securities available for sale, Due in one year or less, Amortized Cost	3,201
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	900
Securities available for sale, After ten years, Amortized Cost	2,520
Securities available for sale, Mortgage backed securities, Amortized Cost	3,885
Securities available for sale Total, Amortized Cost	10,672
Estimated Fair Value
Securities available for sale, Due in one year or less, Estimated Fair Value	3,198
Securities available for sale, After one year through five years, Estimated Fair Value	155
Securities available for sale, After five years through ten years, Estimated Fair Value	855
Securities available for sale, After ten years, Estimated Fair Value	2,356
Securities available for sale, Mortgage backed securities, Estimated Fair Value	3,125
Securities available for sale Total, Estimated Fair Value	$ 9,689	$ 7,092

Investment Securities - Gross G

Investment Securities - Gross Gains and (Losses) on Sales of Investments (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Investment securities - AFS
Gross gains	$ 0.5	$ 0	$ 4	$ 7.3
Gross losses	0	0	(29.6)	0
Net gains (losses) on AFS securities	0.5	0	(25.6)	7.3
Equity securities
Gross gains	0	0	0	0
Gross losses	(0.4)	0	(0.4)	(0.6)
Net losses on equity securities	$ (0.4)	$ 0	$ (0.4)	$ (0.6)

Loans Held For Sale - Additiona

Loans Held For Sale - Additional Information (Details) - USD ($) $ in Billions	3 Months Ended		6 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2023
Receivables [Abstract]
Transfers of loans HFI to HFS, net of fair value loss adjustment (1)		$ 5.9	$ 0.7
Loan dispositions	$ 4.3

Loans Held For Sale - Summary o

Loans Held For Sale - Summary of Loans HFS by Type (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans HFS	$ 1,766	$ 1,184
Total government-insured or guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans HFS	1,168	591
EBO
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans HFS	3	0
Non-EBO
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans HFS	1,165	591
Agency-conforming
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans HFS	585	593
Non-agency
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans HFS	$ 13	$ 0

Loans Held For Sale - Summary_2

Loans Held For Sale - Summary of Net Gain on Loan Purchase, Origination and Sale Activities on Residential Mortgage Loans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Receivables [Abstract]
Mortgage servicing rights capitalized upon sale of loans	$ 265.8	$ 180.6	$ 653	$ 578.1
Net proceeds from sale of loans	(274.7)	(207.1)	(612.7)	(905.7)
Provision for and change in estimate of liability for losses under representations and warranties, net	0.1	0.7	2.8	2.3
Change in fair value	(10.1)	(75.1)	(13.2)	(82)
Unrealized gain (loss) on derivatives	10.3	80.7	25.3	112.1
Realized gain on derivatives	44.5	18.3	47	321.8
Total change in fair value of derivatives	54.8	99	72.3	433.9
Net gain on residential mortgage loans HFS	35.9	(1.9)	102.2	26.6
Loan acquisition and origination fees	16.1	16.4	43.5	52
Net gain on loan origination and sale activities	$ 52	$ 14.5	$ 145.7	$ 78.6

Loans, Leases and Allowance f_3

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	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans HFI, net of deferred fees and costs	$ 49,447		$ 51,862
Less: allowance for credit losses	(327.4)	$ (321.1)	(309.7)	$ (304.1)	$ (273.2)	$ (252.5)
Net loans HFI	49,120		51,552
Warehouse lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans HFI, net of deferred fees and costs	6,439		5,561
Less: allowance for credit losses	(4.7)	(5.2)	(8.4)	(4.4)	(3.7)	(3)
Municipal & nonprofit
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans HFI, net of deferred fees and costs	1,474		1,524
Less: allowance for credit losses	(16.7)	(16.5)	(15.9)	(15.2)	(13.6)	(13.7)
Tech & innovation
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans HFI, net of deferred fees and costs	2,254		2,293
Less: allowance for credit losses	(32)	(33.6)	(30.8)	(25.2)	(25.4)	(25.7)
Equity fund resources
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans HFI, net of deferred fees and costs	1,034		3,717
Less: allowance for credit losses	(1.7)	(1.7)	(6.4)	(10.9)	(14)	(9.6)
Other commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans HFI, net of deferred fees and costs	7,317		7,793
Less: allowance for credit losses	(69.5)	(51.8)	(85.9)	(106.2)	(119.2)	(103.6)
CRE - owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans HFI, net of deferred fees and costs	1,624		1,656
Less: allowance for credit losses	(7.7)	(8)	(7.1)	(6.7)	(7.5)	(10.6)
Hotel franchise finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans HFI, net of deferred fees and costs	3,837		3,807
Less: allowance for credit losses	(40.6)	(45.7)	(46.9)	(51)	(33.8)	(41.5)
Other CRE - non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans HFI, net of deferred fees and costs	5,952		5,457
Less: allowance for credit losses	(95.7)	(90.1)	(47.4)	(33.4)	(22.1)	(16.9)
Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans HFI, net of deferred fees and costs	13,301		13,996
Less: allowance for credit losses	(26.1)	(33.9)	(30.4)	(25.6)	(18.8)	(12.5)
Residential - EBO
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans HFI, net of deferred fees and costs	1,343		1,884
Less: allowance for credit losses	0	0	0
Construction and land development
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans HFI, net of deferred fees and costs	4,652		3,995
Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans HFI, net of deferred fees and costs	220		179
Less: allowance for credit losses	$ (3.6)	$ (2.9)	$ (3.1)	$ (3.1)	$ (2.9)	$ (2.9)

Loans, Leases and Allowance f_4

Loans, Leases and Allowance for Credit Losses - Additional Information (Details)	3 Months Ended			6 Months Ended	9 Months Ended
	Sep. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Sep. 30, 2022 USD ($) SecurityLoan	Sep. 30, 2023 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($) SecurityLoan	Dec. 31, 2022 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, unamortized loan fees	$ (112,000,000)			$ (112,000,000)	$ (112,000,000)		$ (141,000,000)
Financing receivable, unamortized premium	177,000,000			177,000,000	177,000,000		195,000,000
Loans Past Due 90 Days or More and Still Accruing	439,000,000			439,000,000	439,000,000		582,000,000
Interest income associated with loans on nonaccrual status	4,500,000		$ 1,300,000		8,100,000	$ 3,600,000
Modified loans on nonaccrual status	36,000,000			36,000,000	36,000,000
Modified loans current with contractual payments	107,000,000			107,000,000	107,000,000
Amortized cost basis	63,000,000				143,000,000
Reserves allocated to customers whose loan terms modified in troubled debt restructurings							4,000,000
Outstanding commitments on TDR loans							0
New TDR loans | SecurityLoan			2			4
Recorded Investment			$ 14,000,000			$ 14,000,000	14,000,000
Recorded Investment			$ 17,000,000			$ 17,000,000
Loans with payment default within 12 months following modification | SecurityLoan			0			0
Interest receivable	290,000,000			290,000,000	290,000,000		304,000,000
Carrying value of loans transferred		$ 6,000,000,000
Fair value adjustment for loan transfer from HFI to HFS		123,500,000
Transfers of loans HFI to HFS, net of fair value loss adjustment (1)		$ 5,900,000,000		700,000,000
Loan sales	4,300,000,000
Financing Receivable, Purchase
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan purchases	329,000,000		$ 2,700,000,000		1,400,000,000	$ 8,200,000,000
Residential - EBO
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans Past Due 90 Days or More and Still Accruing	439,000,000			439,000,000	439,000,000		582,000,000
Amortized cost basis	84,000,000				176,000,000
Interest receivable	$ 5,000,000			$ 5,000,000	$ 5,000,000		$ 9,000,000

Loans, Leases and Allowance f_5

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	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	$ 137	$ 20
Nonaccrual with an Allowance for Credit Loss	100	65
Total Nonaccrual	237	85
Loans Past Due 90 Days or More and Still Accruing	439	582
Municipal & nonprofit
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	0	0
Nonaccrual with an Allowance for Credit Loss	13	7
Total Nonaccrual	13	7
Loans Past Due 90 Days or More and Still Accruing	0	0
Tech & innovation
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	0	0
Nonaccrual with an Allowance for Credit Loss	7	1
Total Nonaccrual	7	1
Loans Past Due 90 Days or More and Still Accruing	0	0
Other commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	52	1
Nonaccrual with an Allowance for Credit Loss	17	23
Total Nonaccrual	69	24
Loans Past Due 90 Days or More and Still Accruing	0	0
CRE - owner occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	8	10
Nonaccrual with an Allowance for Credit Loss	1	2
Total Nonaccrual	9	12
Loans Past Due 90 Days or More and Still Accruing	0	0
Other CRE - non-owner occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	77	5
Nonaccrual with an Allowance for Credit Loss	0	3
Total Nonaccrual	77	8
Loans Past Due 90 Days or More and Still Accruing	0	0
Residential
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	0	0
Nonaccrual with an Allowance for Credit Loss	62	19
Total Nonaccrual	62	19
Loans Past Due 90 Days or More and Still Accruing	0	0
Residential - EBO
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	0	0
Nonaccrual with an Allowance for Credit Loss	0	0
Total Nonaccrual	0	0
Loans Past Due 90 Days or More and Still Accruing	$ 439	582
Hotel franchise finance
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss		0
Nonaccrual with an Allowance for Credit Loss		10
Total Nonaccrual		10
Loans Past Due 90 Days or More and Still Accruing		0
Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss		4
Nonaccrual with an Allowance for Credit Loss		0
Total Nonaccrual		4
Loans Past Due 90 Days or More and Still Accruing		$ 0

Loans, Leases and Allowance f_6

Loans, Leases and Allowance for Credit Losses - Contractual Aging of Loan Portfolio by Segment (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	$ 49,447	$ 51,862
Pass
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	48,161	51,145
Special mention
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	668	351
Classified
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	618	366
Warehouse lending
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	6,439	5,561
Warehouse lending | Pass
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	6,437	5,518
Warehouse lending | Special mention
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	2	43
Warehouse lending | Classified
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Municipal & nonprofit
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	1,474	1,524
Municipal & nonprofit | Pass
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	1,443	1,517
Municipal & nonprofit | Special mention
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	18	0
Municipal & nonprofit | Classified
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	13	7
Tech & innovation
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	2,254	2,293
Tech & innovation | Pass
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	2,182	2,198
Tech & innovation | Special mention
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	43	81
Tech & innovation | Classified
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	29	14
Equity fund resources
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	1,034	3,717
Equity fund resources | Pass
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	1,034	3,717
Equity fund resources | Special mention
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Equity fund resources | Classified
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Other commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	7,317	7,793
Other commercial and industrial | Pass
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	7,057	7,703
Other commercial and industrial | Special mention
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	149	47
Other commercial and industrial | Classified
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	111	43
CRE - owner occupied
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	1,624	1,656
CRE - owner occupied | Pass
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	1,598	1,607
CRE - owner occupied | Special mention
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	14	1
CRE - owner occupied | Classified
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	12	48
Hotel franchise finance
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	3,837	3,807
Hotel franchise finance | Pass
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	3,475	3,581
Hotel franchise finance | Special mention
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	194	26
Hotel franchise finance | Classified
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	168	200
Other CRE - non-owner occupied
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	5,952	5,457
Other CRE - non-owner occupied | Pass
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	5,560	5,372
Other CRE - non-owner occupied | Special mention
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	230	54
Other CRE - non-owner occupied | Classified
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	162	31
Residential
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	13,301	13,996
Residential | Pass
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	13,239	13,977
Residential | Special mention
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Residential | Classified
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	62	19
Residential - EBO
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	1,343	1,884
Residential - EBO | Pass
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	1,343	1,884
Residential - EBO | Special mention
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Residential - EBO | Classified
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	4,652	3,995
Other
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	220	179
Other | Pass
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	220	178
Other | Special mention
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	1
Other | Classified
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Current
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	48,558	50,877
Current | Warehouse lending
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	6,439	5,561
Current | Municipal & nonprofit
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	1,474	1,524
Current | Tech & innovation
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	2,254	2,270
Current | Equity fund resources
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	1,034	3,717
Current | Other commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	7,317	7,791
Current | CRE - owner occupied
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	1,622	1,656
Current | Hotel franchise finance
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	3,837	3,807
Current | Other CRE - non-owner occupied
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	5,923	5,454
Current | Residential
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	13,216	13,955
Current | Residential - EBO
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	643	969
Current | Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	4,579	3,995
Current | Other
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	220	178
30-59 Days Past Due
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	309	283
30-59 Days Past Due | Warehouse lending
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
30-59 Days Past Due | Municipal & nonprofit
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
30-59 Days Past Due | Tech & innovation
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	23
30-59 Days Past Due | Equity fund resources
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
30-59 Days Past Due | Other commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	2
30-59 Days Past Due | CRE - owner occupied
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
30-59 Days Past Due | Hotel franchise finance
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
30-59 Days Past Due | Other CRE - non-owner occupied
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	29	3
30-59 Days Past Due | Residential
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	68	37
30-59 Days Past Due | Residential - EBO
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	158	217
30-59 Days Past Due | Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	54	0
30-59 Days Past Due | Other
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	1
60-89 Days Past Due
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	141	120
60-89 Days Past Due | Warehouse lending
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
60-89 Days Past Due | Municipal & nonprofit
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
60-89 Days Past Due | Tech & innovation
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
60-89 Days Past Due | Equity fund resources
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
60-89 Days Past Due | Other commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
60-89 Days Past Due | CRE - owner occupied
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	2	0
60-89 Days Past Due | Hotel franchise finance
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
60-89 Days Past Due | Other CRE - non-owner occupied
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
60-89 Days Past Due | Residential
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	17	4
60-89 Days Past Due | Residential - EBO
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	103	116
60-89 Days Past Due | Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	19	0
60-89 Days Past Due | Other
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Over 90 days Past Due
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	439	582
Over 90 days Past Due | Warehouse lending
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Over 90 days Past Due | Municipal & nonprofit
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Over 90 days Past Due | Tech & innovation
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Over 90 days Past Due | Equity fund resources
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Over 90 days Past Due | Other commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Over 90 days Past Due | CRE - owner occupied
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Over 90 days Past Due | Hotel franchise finance
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Over 90 days Past Due | Other CRE - non-owner occupied
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Over 90 days Past Due | Residential
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Over 90 days Past Due | Residential - EBO
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	439	582
Over 90 days Past Due | Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Over 90 days Past Due | Other
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Total Past Due
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	889	985
Total Past Due | Warehouse lending
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Total Past Due | Municipal & nonprofit
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Total Past Due | Tech & innovation
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	23
Total Past Due | Equity fund resources
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Total Past Due | Other commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	2
Total Past Due | CRE - owner occupied
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	2	0
Total Past Due | Hotel franchise finance
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	0	0
Total Past Due | Other CRE - non-owner occupied
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	29	3
Total Past Due | Residential
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	85	41
Total Past Due | Residential - EBO
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	700	915
Total Past Due | Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	73	0
Total Past Due | Other
Financing Receivable, Nonaccrual [Line Items]
Loans HFI, net of deferred fees and costs	$ 0	$ 1

Loans, Leases and Allowance f_7

Loans, Leases and Allowance for Credit Losses - Credit Quality Indicators (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	$ 6,230		$ 6,230		$ 15,460
Year before current fiscal year	12,769		12,769		15,098
Two years before current fiscal year	11,838		11,838		3,997
Three years before current fiscal year	3,194		3,194		2,319
Four years before current fiscal year	1,665		1,665		1,427
Five or more years before current fiscal year	2,649		2,649		2,216
Revolving Loans Amortized Cost Basis	11,102		11,102		11,345
Loans HFI, net of deferred fees and costs	49,447		49,447		51,862
Current fiscal year, writeoff			3
Year before current fiscal year, writeoff			3
Two years before current fiscal year, writeoff			15
Three years before current fiscal year, writeoff			4
Four years before current fiscal year, writeoff			0
Five years before current fiscal year, writeoff			0
Revolving Loans Amortized Cost Basis, Writeoff			1
Charge-offs	8.5	$ 2.1	25.9	$ 7.1
Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	5,962		5,962		15,349
Year before current fiscal year	12,535		12,535		14,914
Two years before current fiscal year	11,476		11,476		3,853
Three years before current fiscal year	3,027		3,027		2,167
Four years before current fiscal year	1,563		1,563		1,363
Five or more years before current fiscal year	2,521		2,521		2,191
Revolving Loans Amortized Cost Basis	11,077		11,077		11,308
Loans HFI, net of deferred fees and costs	48,161		48,161		51,145
Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	159		159		82
Year before current fiscal year	139		139		104
Two years before current fiscal year	148		148		127
Three years before current fiscal year	89		89		12
Four years before current fiscal year	30		30		0
Five or more years before current fiscal year	84		84		2
Revolving Loans Amortized Cost Basis	19		19		24
Loans HFI, net of deferred fees and costs	668		668		351
Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	109		109		29
Year before current fiscal year	95		95		80
Two years before current fiscal year	214		214		17
Three years before current fiscal year	78		78		140
Four years before current fiscal year	72		72		64
Five or more years before current fiscal year	44		44		23
Revolving Loans Amortized Cost Basis	6		6		13
Loans HFI, net of deferred fees and costs	618		618		366
Warehouse lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	594		594		440
Year before current fiscal year	260		260		41
Two years before current fiscal year	4		4		152
Three years before current fiscal year	289		289		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	5,292		5,292		4,928
Loans HFI, net of deferred fees and costs	6,439		6,439		5,561
Current fiscal year, writeoff			0
Year before current fiscal year, writeoff			0
Two years before current fiscal year, writeoff			0
Three years before current fiscal year, writeoff			0
Four years before current fiscal year, writeoff			0
Five years before current fiscal year, writeoff			0
Revolving Loans Amortized Cost Basis, Writeoff			0
Charge-offs	0	0	0	0
Warehouse lending | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	594		594		397
Year before current fiscal year	260		260		41
Two years before current fiscal year	4		4		152
Three years before current fiscal year	289		289		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	5,290		5,290		4,928
Loans HFI, net of deferred fees and costs	6,437		6,437		5,518
Warehouse lending | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	0		0		43
Year before current fiscal year	0		0		0
Two years before current fiscal year	0		0		0
Three years before current fiscal year	0		0		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	2		2		0
Loans HFI, net of deferred fees and costs	2		2		43
Warehouse lending | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	0		0		0
Year before current fiscal year	0		0		0
Two years before current fiscal year	0		0		0
Three years before current fiscal year	0		0		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	0		0		0
Municipal & nonprofit
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	14		14		107
Year before current fiscal year	159		159		185
Two years before current fiscal year	192		192		187
Three years before current fiscal year	182		182		78
Four years before current fiscal year	75		75		43
Five or more years before current fiscal year	852		852		924
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	1,474		1,474		1,524
Current fiscal year, writeoff			0
Year before current fiscal year, writeoff			0
Two years before current fiscal year, writeoff			0
Three years before current fiscal year, writeoff			0
Four years before current fiscal year, writeoff			0
Five years before current fiscal year, writeoff			0
Revolving Loans Amortized Cost Basis, Writeoff			0
Charge-offs	0	0	0	0
Municipal & nonprofit | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	14		14		107
Year before current fiscal year	152		152		185
Two years before current fiscal year	192		192		187
Three years before current fiscal year	182		182		78
Four years before current fiscal year	69		69		43
Five or more years before current fiscal year	834		834		917
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	1,443		1,443		1,517
Municipal & nonprofit | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	0		0		0
Year before current fiscal year	7		7		0
Two years before current fiscal year	0		0		0
Three years before current fiscal year	0		0		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	11		11		0
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	18		18		0
Municipal & nonprofit | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	0		0		0
Year before current fiscal year	0		0		0
Two years before current fiscal year	0		0		0
Three years before current fiscal year	0		0		0
Four years before current fiscal year	6		6		0
Five or more years before current fiscal year	7		7		7
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	13		13		7
Tech & innovation
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	428		428		851
Year before current fiscal year	701		701		408
Two years before current fiscal year	199		199		90
Three years before current fiscal year	67		67		66
Four years before current fiscal year	53		53		4
Five or more years before current fiscal year	1		1		1
Revolving Loans Amortized Cost Basis	805		805		873
Loans HFI, net of deferred fees and costs	2,254		2,254		2,293
Current fiscal year, writeoff			2
Year before current fiscal year, writeoff			0
Two years before current fiscal year, writeoff			0
Three years before current fiscal year, writeoff			0
Four years before current fiscal year, writeoff			0
Five years before current fiscal year, writeoff			0
Revolving Loans Amortized Cost Basis, Writeoff			0
Charge-offs	0	0	1.8	0
Tech & innovation | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	406		406		813
Year before current fiscal year	683		683		374
Two years before current fiscal year	196		196		87
Three years before current fiscal year	58		58		66
Four years before current fiscal year	53		53		4
Five or more years before current fiscal year	1		1		1
Revolving Loans Amortized Cost Basis	785		785		853
Loans HFI, net of deferred fees and costs	2,182		2,182		2,198
Tech & innovation | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	8		8		36
Year before current fiscal year	11		11		22
Two years before current fiscal year	1		1		3
Three years before current fiscal year	6		6		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	17		17		20
Loans HFI, net of deferred fees and costs	43		43		81
Tech & innovation | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	14		14		2
Year before current fiscal year	7		7		12
Two years before current fiscal year	2		2		0
Three years before current fiscal year	3		3		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	3		3		0
Loans HFI, net of deferred fees and costs	29		29		14
Equity fund resources
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	280		280		1,020
Year before current fiscal year	32		32		1,189
Two years before current fiscal year	47		47		191
Three years before current fiscal year	37		37		16
Four years before current fiscal year	2		2		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	636		636		1,301
Loans HFI, net of deferred fees and costs	1,034		1,034		3,717
Current fiscal year, writeoff			0
Year before current fiscal year, writeoff			0
Two years before current fiscal year, writeoff			0
Three years before current fiscal year, writeoff			0
Four years before current fiscal year, writeoff			0
Five years before current fiscal year, writeoff			0
Revolving Loans Amortized Cost Basis, Writeoff			0
Charge-offs	0	0	0	0
Equity fund resources | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	280		280		1,020
Year before current fiscal year	32		32		1,189
Two years before current fiscal year	47		47		191
Three years before current fiscal year	37		37		16
Four years before current fiscal year	2		2		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	636		636		1,301
Loans HFI, net of deferred fees and costs	1,034		1,034		3,717
Equity fund resources | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	0		0		0
Year before current fiscal year	0		0		0
Two years before current fiscal year	0		0		0
Three years before current fiscal year	0		0		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	0		0		0
Equity fund resources | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	0		0		0
Year before current fiscal year	0		0		0
Two years before current fiscal year	0		0		0
Three years before current fiscal year	0		0		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	0		0		0
Other commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	1,650		1,650		2,971
Year before current fiscal year	1,782		1,782		1,337
Two years before current fiscal year	733		733		272
Three years before current fiscal year	194		194		280
Four years before current fiscal year	104		104		315
Five or more years before current fiscal year	226		226		207
Revolving Loans Amortized Cost Basis	2,628		2,628		2,411
Loans HFI, net of deferred fees and costs	7,317		7,317		7,793
Current fiscal year, writeoff			1
Year before current fiscal year, writeoff			3
Two years before current fiscal year, writeoff			10
Three years before current fiscal year, writeoff			4
Four years before current fiscal year, writeoff			0
Five years before current fiscal year, writeoff			0
Revolving Loans Amortized Cost Basis, Writeoff			1
Charge-offs	5.4	2.1	18.7	7
Other commercial and industrial | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	1,555		1,555		2,968
Year before current fiscal year	1,691		1,691		1,272
Two years before current fiscal year	668		668		262
Three years before current fiscal year	193		193		277
Four years before current fiscal year	100		100		312
Five or more years before current fiscal year	225		225		206
Revolving Loans Amortized Cost Basis	2,625		2,625		2,406
Loans HFI, net of deferred fees and costs	7,057		7,057		7,703
Other commercial and industrial | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	94		94		0
Year before current fiscal year	53		53		44
Two years before current fiscal year	2		2		0
Three years before current fiscal year	0		0		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	0		0		3
Loans HFI, net of deferred fees and costs	149		149		47
Other commercial and industrial | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	1		1		3
Year before current fiscal year	38		38		21
Two years before current fiscal year	63		63		10
Three years before current fiscal year	1		1		3
Four years before current fiscal year	4		4		3
Five or more years before current fiscal year	1		1		1
Revolving Loans Amortized Cost Basis	3		3		2
Loans HFI, net of deferred fees and costs	111		111		43
CRE - owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	97		97		338
Year before current fiscal year	351		351		373
Two years before current fiscal year	334		334		181
Three years before current fiscal year	167		167		158
Four years before current fiscal year	138		138		216
Five or more years before current fiscal year	501		501		350
Revolving Loans Amortized Cost Basis	36		36		40
Loans HFI, net of deferred fees and costs	1,624		1,624		1,656
Current fiscal year, writeoff			0
Year before current fiscal year, writeoff			0
Two years before current fiscal year, writeoff			0
Three years before current fiscal year, writeoff			0
Four years before current fiscal year, writeoff			0
Five years before current fiscal year, writeoff			0
Revolving Loans Amortized Cost Basis, Writeoff			0
Charge-offs	0	0	0	0
CRE - owner occupied | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	93		93		338
Year before current fiscal year	347		347		359
Two years before current fiscal year	330		330		174
Three years before current fiscal year	165		165		157
Four years before current fiscal year	136		136		211
Five or more years before current fiscal year	491		491		339
Revolving Loans Amortized Cost Basis	36		36		29
Loans HFI, net of deferred fees and costs	1,598		1,598		1,607
CRE - owner occupied | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	4		4		0
Year before current fiscal year	4		4		0
Two years before current fiscal year	0		0		0
Three years before current fiscal year	0		0		0
Four years before current fiscal year	1		1		0
Five or more years before current fiscal year	5		5		1
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	14		14		1
CRE - owner occupied | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	0		0		0
Year before current fiscal year	0		0		14
Two years before current fiscal year	4		4		7
Three years before current fiscal year	2		2		1
Four years before current fiscal year	1		1		5
Five or more years before current fiscal year	5		5		10
Revolving Loans Amortized Cost Basis	0		0		11
Loans HFI, net of deferred fees and costs	12		12		48
Hotel franchise finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	537		537		1,780
Year before current fiscal year	1,562		1,562		746
Two years before current fiscal year	705		705		80
Three years before current fiscal year	121		121		645
Four years before current fiscal year	513		513		335
Five or more years before current fiscal year	265		265		103
Revolving Loans Amortized Cost Basis	134		134		118
Loans HFI, net of deferred fees and costs	3,837		3,837		3,807
Current fiscal year, writeoff			0
Year before current fiscal year, writeoff			0
Two years before current fiscal year, writeoff			0
Three years before current fiscal year, writeoff			0
Four years before current fiscal year, writeoff			0
Five years before current fiscal year, writeoff			0
Revolving Loans Amortized Cost Basis, Writeoff			0
Charge-offs	0	0	0	0
Hotel franchise finance | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	454		454		1,762
Year before current fiscal year	1,531		1,531		726
Two years before current fiscal year	618		618		54
Three years before current fiscal year	95		95		528
Four years before current fiscal year	470		470		290
Five or more years before current fiscal year	173		173		103
Revolving Loans Amortized Cost Basis	134		134		118
Loans HFI, net of deferred fees and costs	3,475		3,475		3,581
Hotel franchise finance | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	37		37		0
Year before current fiscal year	22		22		0
Two years before current fiscal year	67		67		26
Three years before current fiscal year	0		0		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	68		68		0
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	194		194		26
Hotel franchise finance | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	46		46		18
Year before current fiscal year	9		9		20
Two years before current fiscal year	20		20		0
Three years before current fiscal year	26		26		117
Four years before current fiscal year	43		43		45
Five or more years before current fiscal year	24		24		0
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	168		168		200
Other CRE - non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	1,434		1,434		2,347
Year before current fiscal year	2,270		2,270		1,243
Two years before current fiscal year	904		904		870
Three years before current fiscal year	607		607		288
Four years before current fiscal year	230		230		170
Five or more years before current fiscal year	261		261		223
Revolving Loans Amortized Cost Basis	246		246		316
Loans HFI, net of deferred fees and costs	5,952		5,952		5,457
Current fiscal year, writeoff			0
Year before current fiscal year, writeoff			0
Two years before current fiscal year, writeoff			5
Three years before current fiscal year, writeoff			0
Four years before current fiscal year, writeoff			0
Five years before current fiscal year, writeoff			0
Revolving Loans Amortized Cost Basis, Writeoff			0
Charge-offs	3	0	5.2	0
Other CRE - non-owner occupied | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	1,370		1,370		2,344
Year before current fiscal year	2,227		2,227		1,201
Two years before current fiscal year	739		739		870
Three years before current fiscal year	535		535		264
Four years before current fiscal year	186		186		160
Five or more years before current fiscal year	257		257		218
Revolving Loans Amortized Cost Basis	246		246		315
Loans HFI, net of deferred fees and costs	5,560		5,560		5,372
Other CRE - non-owner occupied | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	16		16		3
Year before current fiscal year	42		42		38
Two years before current fiscal year	72		72		0
Three years before current fiscal year	71		71		12
Four years before current fiscal year	29		29		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	0		0		1
Loans HFI, net of deferred fees and costs	230		230		54
Other CRE - non-owner occupied | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	48		48		0
Year before current fiscal year	1		1		4
Two years before current fiscal year	93		93		0
Three years before current fiscal year	1		1		12
Four years before current fiscal year	15		15		10
Five or more years before current fiscal year	4		4		5
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	162		162		31
Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	277		277		4,047
Year before current fiscal year	3,624		3,624		8,483
Two years before current fiscal year	8,054		8,054		878
Three years before current fiscal year	830		830		311
Four years before current fiscal year	278		278		151
Five or more years before current fiscal year	215		215		90
Revolving Loans Amortized Cost Basis	23		23		36
Loans HFI, net of deferred fees and costs	13,301		13,301		13,996
Current fiscal year, writeoff			0
Year before current fiscal year, writeoff			0
Two years before current fiscal year, writeoff			0
Three years before current fiscal year, writeoff			0
Four years before current fiscal year, writeoff			0
Five years before current fiscal year, writeoff			0
Revolving Loans Amortized Cost Basis, Writeoff			0
Charge-offs	0	0	0	0
Residential | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	277		277		4,041
Year before current fiscal year	3,603		3,603		8,474
Two years before current fiscal year	8,022		8,022		878
Three years before current fiscal year	827		827		308
Four years before current fiscal year	275		275		150
Five or more years before current fiscal year	212		212		90
Revolving Loans Amortized Cost Basis	23		23		36
Loans HFI, net of deferred fees and costs	13,239		13,239		13,977
Residential | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	0		0		0
Year before current fiscal year	0		0		0
Two years before current fiscal year	0		0		0
Three years before current fiscal year	0		0		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	0		0		0
Residential | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	0		0		6
Year before current fiscal year	21		21		9
Two years before current fiscal year	32		32		0
Three years before current fiscal year	3		3		3
Four years before current fiscal year	3		3		1
Five or more years before current fiscal year	3		3		0
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	62		62		19
Residential - EBO
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	1		1		3
Year before current fiscal year	10		10		268
Two years before current fiscal year	239		239		712
Three years before current fiscal year	564		564		454
Four years before current fiscal year	268		268		191
Five or more years before current fiscal year	261		261		256
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	1,343		1,343		1,884
Current fiscal year, writeoff			0
Year before current fiscal year, writeoff			0
Two years before current fiscal year, writeoff			0
Three years before current fiscal year, writeoff			0
Four years before current fiscal year, writeoff			0
Five years before current fiscal year, writeoff			0
Revolving Loans Amortized Cost Basis, Writeoff			0
Charge-offs	0		0
Residential - EBO | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	1		1		3
Year before current fiscal year	10		10		268
Two years before current fiscal year	239		239		712
Three years before current fiscal year	564		564		454
Four years before current fiscal year	268		268		191
Five or more years before current fiscal year	261		261		256
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	1,343		1,343		1,884
Residential - EBO | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	0		0		0
Year before current fiscal year	0		0		0
Two years before current fiscal year	0		0		0
Three years before current fiscal year	0		0		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	0		0		0
Residential - EBO | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	0		0		0
Year before current fiscal year	0		0		0
Two years before current fiscal year	0		0		0
Three years before current fiscal year	0		0		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	0		0		0
Construction and land development
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	910		910		1,533
Year before current fiscal year	2,004		2,004		815
Two years before current fiscal year	424		424		371
Three years before current fiscal year	123		123		18
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	1		1		0
Revolving Loans Amortized Cost Basis	1,190		1,190		1,258
Loans HFI, net of deferred fees and costs	4,652		4,652		3,995
Current fiscal year, writeoff			0
Year before current fiscal year, writeoff			0
Two years before current fiscal year, writeoff			0
Three years before current fiscal year, writeoff			0
Four years before current fiscal year, writeoff			0
Five years before current fiscal year, writeoff			0
Revolving Loans Amortized Cost Basis, Writeoff			0
Charge-offs			0
Construction and land development | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	910		910		1,533
Year before current fiscal year	1,985		1,985		815
Two years before current fiscal year	418		418		273
Three years before current fiscal year	69		69		14
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	1		1		0
Revolving Loans Amortized Cost Basis	1,190		1,190		1,258
Loans HFI, net of deferred fees and costs	4,573		4,573		3,893
Construction and land development | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	0		0		0
Year before current fiscal year	0		0		0
Two years before current fiscal year	6		6		98
Three years before current fiscal year	12		12		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	18		18		98
Construction and land development | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	0		0		0
Year before current fiscal year	19		19		0
Two years before current fiscal year	0		0		0
Three years before current fiscal year	42		42		4
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	61		61		4
Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	8		8		23
Year before current fiscal year	14		14		10
Two years before current fiscal year	3		3		13
Three years before current fiscal year	13		13		5
Four years before current fiscal year	4		4		2
Five or more years before current fiscal year	66		66		62
Revolving Loans Amortized Cost Basis	112		112		64
Loans HFI, net of deferred fees and costs	220		220		179
Current fiscal year, writeoff			0
Year before current fiscal year, writeoff			0
Two years before current fiscal year, writeoff			0
Three years before current fiscal year, writeoff			0
Four years before current fiscal year, writeoff			0
Five years before current fiscal year, writeoff			0
Revolving Loans Amortized Cost Basis, Writeoff			0
Charge-offs	0.1	$ 0	0.2	$ 0.1
Other | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	8		8		23
Year before current fiscal year	14		14		10
Two years before current fiscal year	3		3		13
Three years before current fiscal year	13		13		5
Four years before current fiscal year	4		4		2
Five or more years before current fiscal year	66		66		61
Revolving Loans Amortized Cost Basis	112		112		64
Loans HFI, net of deferred fees and costs	220		220		178
Other | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	0		0		0
Year before current fiscal year	0		0		0
Two years before current fiscal year	0		0		0
Three years before current fiscal year	0		0		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	0		0		1
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	0		0		1
Other | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
Current fiscal year	0		0		0
Year before current fiscal year	0		0		0
Two years before current fiscal year	0		0		0
Three years before current fiscal year	0		0		0
Four years before current fiscal year	0		0		0
Five or more years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Loans HFI, net of deferred fees and costs	$ 0		$ 0		$ 0

Loans, Leases and Allowance f_8

Loans, Leases and Allowance for Credit Losses - Amortized Cost Basis of Loans Modified (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 63	$ 143
% of Total Class of Financing Receivable	0.10%	0.30%
Payment Delay and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 0	$ 2
Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	44	121
Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	19	20
Tech & innovation
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 7	$ 9
% of Total Class of Financing Receivable	0.30%	0.40%
Tech & innovation | Payment Delay and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 0	$ 2
Tech & innovation | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	0	0
Tech & innovation | Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	7	7
Other commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 13	$ 36
% of Total Class of Financing Receivable	0.20%	0.50%
Other commercial and industrial | Payment Delay and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 0	$ 0
Other commercial and industrial | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	1	24
Other commercial and industrial | Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	12	12
CRE - owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 3	$ 3
% of Total Class of Financing Receivable	0.20%	0.20%
CRE - owner occupied | Payment Delay and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 0	$ 0
CRE - owner occupied | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	3	3
CRE - owner occupied | Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	0	0
Hotel franchise finance
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 20	$ 46
% of Total Class of Financing Receivable	0.50%	1.20%
Hotel franchise finance | Payment Delay and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 0	$ 0
Hotel franchise finance | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	20	46
Hotel franchise finance | Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	0	0
Other CRE - non-owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 20	$ 48
% of Total Class of Financing Receivable	0.30%	0.80%
Other CRE - non-owner occupied | Payment Delay and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 0	$ 0
Other CRE - non-owner occupied | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	20	48
Other CRE - non-owner occupied | Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 0	0
Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis		$ 1
% of Total Class of Financing Receivable		0%
Residential | Payment Delay and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis		$ 0
Residential | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis		0
Residential | Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis		$ 1

Loans, Leases and Allowance f_9

Loans, Leases and Allowance for Credit Losses Loans, Leases and Allowance for Credit Losses - Troubled Debt Restructurings (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($) SecurityLoan	Sep. 30, 2022 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | SecurityLoan			7
Recorded Investment			$ 14	$ 14
Amortized cost basis	$ 63	$ 143
% of Total Class of Financing Receivable	0.10%	0.30%
Payment Delay and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 0	$ 2
Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	44	121
Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	19	20
Other commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | SecurityLoan			4
Recorded Investment			$ 2
Amortized cost basis	$ 13	$ 36
% of Total Class of Financing Receivable	0.20%	0.50%
Other commercial and industrial | Payment Delay and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 0	$ 0
Other commercial and industrial | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	1	24
Other commercial and industrial | Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	12	12
CRE - owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | SecurityLoan			1
Recorded Investment			$ 1
Amortized cost basis	$ 3	$ 3
% of Total Class of Financing Receivable	0.20%	0.20%
CRE - owner occupied | Payment Delay and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 0	$ 0
CRE - owner occupied | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	3	3
CRE - owner occupied | Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	0	0
Hotel franchise finance
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | SecurityLoan			1
Recorded Investment			$ 10
Amortized cost basis	$ 20	$ 46
% of Total Class of Financing Receivable	0.50%	1.20%
Hotel franchise finance | Payment Delay and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 0	$ 0
Hotel franchise finance | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	20	46
Hotel franchise finance | Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	0	0
Other CRE - non-owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | SecurityLoan			1
Recorded Investment			$ 1
Amortized cost basis	$ 20	$ 48
% of Total Class of Financing Receivable	0.30%	0.80%
Other CRE - non-owner occupied | Payment Delay and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 0	$ 0
Other CRE - non-owner occupied | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	20	48
Other CRE - non-owner occupied | Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost basis	$ 0	$ 0

Loans, Leases and Allowance _10

Loans, Leases and Allowance for Credit Losses Loans, Leases and Allowance for Credit Losses - Collateral Dependent Loans (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	$ 49,120	$ 51,552
Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	372	302
Real Estate Collateral | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	352	259
Other Collateral | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	20	43
Municipal & nonprofit | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	12	7
Municipal & nonprofit | Real Estate Collateral | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	0	0
Municipal & nonprofit | Other Collateral | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	12	7
Tech & innovation | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	0	6
Tech & innovation | Real Estate Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	0	0
Tech & innovation | Other Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	0	6
Other commercial and industrial | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	8	30
Other commercial and industrial | Real Estate Collateral | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	0	0
Other commercial and industrial | Other Collateral | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	8	30
CRE - owner occupied | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	6	42
CRE - owner occupied | Real Estate Collateral | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	6	42
CRE - owner occupied | Other Collateral | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	0	0
Hotel franchise finance | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	125	186
Hotel franchise finance | Real Estate Collateral | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	125	186
Hotel franchise finance | Other Collateral | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	0	0
Other CRE - non-owner occupied | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	160	27
Other CRE - non-owner occupied | Real Estate Collateral | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	160	27
Other CRE - non-owner occupied | Other Collateral | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	0	0
Construction and land development | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	61	4
Construction and land development | Real Estate Collateral | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	61	4
Construction and land development | Other Collateral | Asset Pledged as Collateral
Loans and Leases Receivable Disclosure [Line Items]
Net loans HFI	$ 0	$ 0

Loans, Leases and Allowance _11

Loans, Leases and Allowance for Credit Losses - Allowances for Credit Losses (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 321.1	$ 273.2	$ 309.7	$ 252.5
Provision for (Recovery of) Credit Losses	14.3	29	39.1	51.3
Charge-offs	8.5	2.1	25.9	7.1
Recoveries	(0.5)	(4)	(4.5)	(7.4)
Ending balance	327.4	304.1	327.4	304.1
Balance, beginning of period	41.1	53.8	47	37.6
Provision for credit losses	(3.2)	(1.7)	(9.1)	14.5
Balance, end of period	37.9	52.1	37.9	52.1
Warehouse lending
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	5.2	3.7	8.4	3
Provision for (Recovery of) Credit Losses	(0.5)	0.7	(3.7)	1.4
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	4.7	4.4	4.7	4.4
Municipal & nonprofit
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	16.5	13.6	15.9	13.7
Provision for (Recovery of) Credit Losses	0.2	1.6	0.8	1.5
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	16.7	15.2	16.7	15.2
Tech & innovation
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	33.6	25.4	30.8	25.7
Provision for (Recovery of) Credit Losses	(1.6)	(0.2)	3	(2.5)
Charge-offs	0	0	1.8	0
Recoveries	0	0	0	(2)
Ending balance	32	25.2	32	25.2
Equity fund resources
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1.7	14	6.4	9.6
Provision for (Recovery of) Credit Losses	0	(3.1)	(4.7)	1.3
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	1.7	10.9	1.7	10.9
Other commercial and industrial
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	51.8	119.2	85.9	103.6
Provision for (Recovery of) Credit Losses	22.8	(14.7)	(2)	4.7
Charge-offs	5.4	2.1	18.7	7
Recoveries	(0.3)	(3.8)	(4.3)	(4.9)
Ending balance	69.5	106.2	69.5	106.2
CRE - owner occupied
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	8	7.5	7.1	10.6
Provision for (Recovery of) Credit Losses	(0.3)	(0.8)	0.6	(4)
Charge-offs	0	0	0	0
Recoveries	0	0	0	(0.1)
Ending balance	7.7	6.7	7.7	6.7
Hotel franchise finance
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	45.7	33.8	46.9	41.5
Provision for (Recovery of) Credit Losses	(5.1)	17.2	(6.3)	9.5
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	40.6	51	40.6	51
Other CRE - non-owner occupied
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	90.1	22.1	47.4	16.9
Provision for (Recovery of) Credit Losses	8.6	11.2	53.5	16.4
Charge-offs	3	0	5.2	0
Recoveries	0	(0.1)	0	(0.1)
Ending balance	95.7	33.4	95.7	33.4
Residential
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	33.9	18.8	30.4	12.5
Provision for (Recovery of) Credit Losses	(7.9)	6.8	(4.4)	13.1
Charge-offs	0	0	0	0
Recoveries	(0.1)	0	(0.1)	0
Ending balance	26.1	25.6	26.1	25.6
Residential - EBO
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	0		0
Provision for (Recovery of) Credit Losses	0		0
Charge-offs	0		0
Recoveries	0		0
Ending balance	0		0
Construction and land development
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	31.7	12.2	27.4	12.5
Provision for (Recovery of) Credit Losses	(2.6)	10.1	1.7	9.8
Charge-offs	0	0	0	0
Recoveries	0	(0.1)	0	(0.1)
Ending balance	29.1	22.4	29.1	22.4
Other
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	2.9	2.9	3.1	2.9
Provision for (Recovery of) Credit Losses	0.7	0.2	0.6	0.1
Charge-offs	0.1	0	0.2	0.1
Recoveries	(0.1)	0	(0.1)	(0.2)
Ending balance	$ 3.6	$ 3.1	$ 3.6	$ 3.1

Loans, Leases and Allowance _12

Loans, Leases and Allowance for Credit Losses - Disaggregation of the Company's ACL on Funded Loans and Loan Balances (Details) - USD ($) $ in Millions	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Collectively Evaluated for Credit Loss	$ 48,899		$ 51,526
Individually Evaluated for Credit Loss	548		336
Loans HFI, net of deferred fees and costs	49,447		51,862
Collectively Evaluated for Credit Loss	313.6		299
Individually Evaluated for Credit Loss	13.8		10.7
Total	327.4	$ 321.1	309.7	$ 304.1	$ 273.2	$ 252.5
Warehouse lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Collectively Evaluated for Credit Loss	6,439		5,561
Individually Evaluated for Credit Loss	0		0
Loans HFI, net of deferred fees and costs	6,439		5,561
Collectively Evaluated for Credit Loss	4.7		8.4
Individually Evaluated for Credit Loss	0		0
Total	4.7	5.2	8.4	4.4	3.7	3
Municipal & nonprofit
Financing Receivable, Allowance for Credit Loss [Line Items]
Collectively Evaluated for Credit Loss	1,461		1,517
Individually Evaluated for Credit Loss	13		7
Loans HFI, net of deferred fees and costs	1,474		1,524
Collectively Evaluated for Credit Loss	13.2		13.4
Individually Evaluated for Credit Loss	3.5		2.5
Total	16.7	16.5	15.9	15.2	13.6	13.7
Tech & innovation
Financing Receivable, Allowance for Credit Loss [Line Items]
Collectively Evaluated for Credit Loss	2,225		2,280
Individually Evaluated for Credit Loss	29		13
Loans HFI, net of deferred fees and costs	2,254		2,293
Collectively Evaluated for Credit Loss	27.9		30.3
Individually Evaluated for Credit Loss	4.1		0.5
Total	32	33.6	30.8	25.2	25.4	25.7
Equity fund resources
Financing Receivable, Allowance for Credit Loss [Line Items]
Collectively Evaluated for Credit Loss	1,034		3,717
Individually Evaluated for Credit Loss	0		0
Loans HFI, net of deferred fees and costs	1,034		3,717
Collectively Evaluated for Credit Loss	1.7		6.4
Individually Evaluated for Credit Loss	0		0
Total	1.7	1.7	6.4	10.9	14	9.6
Other commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Collectively Evaluated for Credit Loss	7,209		7,754
Individually Evaluated for Credit Loss	108		39
Loans HFI, net of deferred fees and costs	7,317		7,793
Collectively Evaluated for Credit Loss	63.3		80.4
Individually Evaluated for Credit Loss	6.2		5.5
Total	69.5	51.8	85.9	106.2	119.2	103.6
CRE - owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Collectively Evaluated for Credit Loss	1,615		1,612
Individually Evaluated for Credit Loss	9		44
Loans HFI, net of deferred fees and costs	1,624		1,656
Collectively Evaluated for Credit Loss	7.7		7.1
Individually Evaluated for Credit Loss	0		0
Total	7.7	8	7.1	6.7	7.5	10.6
Hotel franchise finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Collectively Evaluated for Credit Loss	3,669		3,607
Individually Evaluated for Credit Loss	168		200
Loans HFI, net of deferred fees and costs	3,837		3,807
Collectively Evaluated for Credit Loss	40.6		44.7
Individually Evaluated for Credit Loss	0		2.2
Total	40.6	45.7	46.9	51	33.8	41.5
Other CRE - non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Collectively Evaluated for Credit Loss	5,791		5,428
Individually Evaluated for Credit Loss	161		29
Loans HFI, net of deferred fees and costs	5,952		5,457
Collectively Evaluated for Credit Loss	95.7		47.4
Individually Evaluated for Credit Loss	0		0
Total	95.7	90.1	47.4	33.4	22.1	16.9
Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Collectively Evaluated for Credit Loss	13,301		13,996
Individually Evaluated for Credit Loss	0		0
Loans HFI, net of deferred fees and costs	13,301		13,996
Collectively Evaluated for Credit Loss	26.1		30.4
Individually Evaluated for Credit Loss	0		0
Total	26.1	33.9	30.4	25.6	18.8	12.5
Residential - EBO
Financing Receivable, Allowance for Credit Loss [Line Items]
Collectively Evaluated for Credit Loss	1,343		1,884
Individually Evaluated for Credit Loss	0		0
Loans HFI, net of deferred fees and costs	1,343		1,884
Collectively Evaluated for Credit Loss	0		0
Individually Evaluated for Credit Loss	0		0
Total	0	0	0
Construction and land development
Financing Receivable, Allowance for Credit Loss [Line Items]
Collectively Evaluated for Credit Loss	4,592		3,991
Individually Evaluated for Credit Loss	60		4
Loans HFI, net of deferred fees and costs	4,652		3,995
Collectively Evaluated for Credit Loss	29.1		27.4
Individually Evaluated for Credit Loss	0		0
Total	29.1	31.7	27.4	22.4	12.2	12.5
Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Collectively Evaluated for Credit Loss	220		179
Individually Evaluated for Credit Loss	0		0
Loans HFI, net of deferred fees and costs	220		179
Collectively Evaluated for Credit Loss	3.6		3.1
Individually Evaluated for Credit Loss	0		0
Total	$ 3.6	$ 2.9	$ 3.1	$ 3.1	$ 2.9	$ 2.9

Mortgage Servicing Rights - Cha

Mortgage Servicing Rights - Changes in Fair Value of the Company's MSR Portfolio (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance, beginning of period	$ 1,007	$ 826	$ 1,148	$ 698
Mortgage servicing rights capitalized upon sale of mortgage loans	266	180	653	578
Carrying value of MSRs sold	(112)	0	(611)	(350)
Change in fair value	98	63	114	206
Mark to market adjustments	0	0	4	0
Realization of cash flows	(26)	(25)	(75)	(88)
Balance, end of period	1,233	1,044	1,233	1,044
Unpaid principal balance of mortgage loans serviced for others	$ 70,261	$ 62,841	$ 70,261	$ 62,841

Mortgage Servicing Rights - Add

Mortgage Servicing Rights - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Servicing Assets at Fair Value [Line Items]
MSR UPB of underlying loans	$ 16,000		$ 44,300	$ 24,100
Remaining receivable balance	34		34		$ 39
Ancillary income associated with the Company's MSR portfolio	56.4	$ 48.9	173.3	140.7
Servicing advances, net	51		51		$ 102
Servicing Contracts
Servicing Assets at Fair Value [Line Items]
Disposals of servicing assets	$ 110	$ 0	$ 611	$ 350

Mortgage Servicing Rights - Eff

Mortgage Servicing Rights - Effect of Hypothetical Changes in the Fair Value of MSRs (Details) - USD ($) $ in Millions	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Transfers and Servicing [Abstract]
Fair value of mortgage servicing rights	$ 1,233	$ 1,007	$ 1,148	$ 1,044	$ 826	$ 698
Adverse change	(59)
Favorable change	52
Increase	(25)
Decrease	26
Increase	(29)
Decrease	32
Increase	(15)
Decrease	$ 15

Deposits - Deposits by Type (De

Deposits - Deposits by Type (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Other Liabilities Disclosure [Abstract]
Non-interest-bearing demand	$ 17,991	$ 19,691
Interest-bearing transaction accounts	12,843	9,507
Savings and money market accounts	14,672	19,397
Time certificates of deposit ($250,000 or more)	6,690	3,815
Other time deposits	2,091	1,234
Total deposits	$ 54,287	$ 53,644

Deposits - Summary of Contractu

Deposits - Summary of Contractual Maturities for Time Deposits (Details) $ in Millions	Sep. 30, 2023 USD ($)
Other Liabilities Disclosure [Abstract]
2023	$ 3,311
2024	4,870
2025	594
2026	5
2027	1
Total	$ 8,781

Deposits - Additional Informati

Deposits - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Other Liabilities Disclosure [Abstract]
Wholesale deposits	$ 6,500		$ 6,500		$ 4,800
Reciprocal deposits	12,500		12,500		2,800
Earnings credits or referral fees	17,100		17,100		$ 12,900
Deposits costs, deposits with earnings credits	$ 123.7	$ 17.3	$ 297.1	$ 26

Other Borrowings - Company's Bo

Other Borrowings - Company's Borrowings (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Debt [Line Items]
Federal funds purchased	$ 122	$ 640
FHLB advances	4,700	4,300
Warehouse borrowings	1,334	0
Customer repurchase agreements	490	27
Short-term Debt	7,982	4,992
AmeriHome senior notes, net of fair value adjustment	313	315
Credit linked notes, net	450	992
Long-term Debt	763	1,307
Other borrowings	8,745	6,299
BTFP advances
Debt [Line Items]
BTFP advances	1,300	0
Secured borrowings
Debt [Line Items]
BTFP advances	$ 36	$ 25

Other Borrowings - Additional I

Other Borrowings - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Sep. 30, 2020
Debt [Line Items]
Weighted average rate on FHLB advances	5.77%		5.77%		4.70%
Warehouse borrowings	$ 1,334		$ 1,334		$ 0
Customer repurchase agreements	490		490		27
Gain on extinguishment of debt	0	$ 0	13.4	$ 0
Credit Linked Notes
Debt [Line Items]
Debt Issuance Costs	8		8		14
Principal	$ 466		466		1,028
Gain on extinguishment of debt			$ 13.4
Fed Funds Effective Rate Overnight Index Swap Rate | Minimum
Debt [Line Items]
Period of basis point spread			0.10%
Fed Funds Effective Rate Overnight Index Swap Rate | Maximum
Debt [Line Items]
Period of basis point spread			0.20%
Senior Notes
Debt [Line Items]
Principal						$ 300
Interest rate	6.50%		6.50%
Redemption period	3 years		3 years
Fair value adjustment (premium)						$ 19
Senior Notes | Debt Instrument, Redemption, Period One
Debt [Line Items]
Redemption, percentage of principal			40%
Redemption percentage			106.50%
Senior Notes | Debt Instrument, Redemption, Period Two
Debt [Line Items]
Redemption, percentage of principal			100%
Redemption percentage			103.25%
Securities Repurchase Agreements
Debt [Line Items]
Customer repurchase agreements					0
Early Buyout Repurchase Agreements
Debt [Line Items]
Collateralized amount	$ 1,300		$ 1,300
Customer repurchase agreements	481		481		0
Debt Issuance Costs	2		2
Customer Repurchase Agreements
Debt [Line Items]
Customer repurchase agreements	9		9		27
Federal Home Loan Bank Advances
Debt [Line Items]
Additional available credit with the entity	$ 7,600		$ 7,600		6,800
Federal Reserve Bank BTFP Advances
Debt [Line Items]
Weighted average rate on FHLB advances	4.76%		4.76%
Federal Reserve Bank BTFP Advances | Fed Funds Effective Rate Overnight Index Swap Rate
Debt [Line Items]
Period of basis point spread			0.10%
FRB
Debt [Line Items]
Additional available credit with the entity	$ 14,800		$ 14,800		$ 5,200
Revolving Credit Facility
Debt [Line Items]
Secured borrowing credit line	1,400		1,400
Warehouse Agreement Borrowings
Debt [Line Items]
Additional available credit with the entity	3,000		3,000
Warehouse borrowings	$ 1,300		$ 1,300
Weighted average borrowing rate	6.91%		6.91%
Secured Debt
Debt [Line Items]
Weighted average borrowing rate	6.31%		6.31%		6.39%
Customer Repurchase Agreements
Debt [Line Items]
Weighted average borrowing rate	0.22%		0.22%		0.15%
Early Buyout Repurchase Agreements
Debt [Line Items]
Weighted average borrowing rate	7.23%		7.23%

Other Borrowings - Outstanding

Other Borrowings - Outstanding Credit Linked Noted Issuances (Details) - Credit Linked Notes - USD ($) $ in Millions	9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Debt [Line Items]
Principal	$ 466		$ 1,028
Debt Issuance Costs	8		14
Credit Linked Notes Maturing October 2052
Debt [Line Items]
Principal	91		95
Debt Issuance Costs	2		2
Reference pool balance	$ 1,800		$ 1,800
Credit Linked Notes Maturing October 2052 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt [Line Items]
Period of basis point spread	7.80%		7.80%
Weighted average borrowing rate	7.80%
Credit Linked Notes Maturing October 2052 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Minimum
Debt [Line Items]
Period of basis point spread	2.25%
Credit Linked Notes Maturing October 2052 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Maximum
Debt [Line Items]
Period of basis point spread	11%
Credit Linked Notes Maturing April 2052
Debt [Line Items]
Principal	$ 181		$ 189
Debt Issuance Costs	3		3
Reference pool balance	$ 3,600		$ 3,800
Credit Linked Notes Maturing April 2052 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt [Line Items]
Period of basis point spread		6%	6%
Weighted average borrowing rate	6%
Credit Linked Notes Maturing April 2052 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Minimum
Debt [Line Items]
Period of basis point spread	2.25%
Credit Linked Notes Maturing April 2052 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Maximum
Debt [Line Items]
Period of basis point spread	15%
Credit Linked Notes Maturing July 2059
Debt [Line Items]
Principal	$ 194		$ 202
Debt Issuance Costs	3		3
Reference pool balance	$ 3,800		$ 4,000
Credit Linked Notes Maturing July 2059 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt [Line Items]
Period of basis point spread		4.67%	4.67%
Weighted average borrowing rate	4.67%
Credit Linked Notes Maturing July 2059 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Minimum
Debt [Line Items]
Period of basis point spread	3.15%
Credit Linked Notes Maturing July 2059 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Maximum
Debt [Line Items]
Period of basis point spread	8.50%
Credit Linked Notes Maturing June 2028
Debt [Line Items]
Principal			$ 300
Debt Issuance Costs			4
Reference pool balance			$ 1,600
Credit Linked Notes Maturing June 2028 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt [Line Items]
Period of basis point spread			6.75%
Credit Linked Notes Maturing December 2024
Debt [Line Items]
Principal			$ 242
Debt Issuance Costs			2
Reference pool balance			$ 689
Credit Linked Notes Maturing December 2024 | London Interbank Offered Rate (LIBOR) Swap Rate
Debt [Line Items]
Period of basis point spread			5.50%

Qualifying Debt - Subordinated

Qualifying Debt - Subordinated Debt Issuances (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Subordinated Debt
Debt Instrument [Line Items]
Principal	$ 825	$ 825
Debt Issuance Costs	$ 8	$ 8
Subordinated Debentures Maturing June 2031
Debt Instrument [Line Items]
Interest rate	3%
Subordinated Debentures Maturing June 2031 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Period of basis point spread	2.25%
Subordinated Debentures Maturing June 2031 | Subordinated Debt
Debt Instrument [Line Items]
Interest rate	3%	3%
Principal	$ 600	$ 600
Debt Issuance Costs	$ 7	$ 7
Subordinated Debentures Maturing June 2030
Debt Instrument [Line Items]
Interest rate	5.25%
Subordinated Debentures Maturing June 2030 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Period of basis point spread	5.12%
Subordinated Debentures Maturing June 2030 | Subordinated Debt
Debt Instrument [Line Items]
Interest rate	5.25%	5.25%
Principal	$ 225	$ 225
Debt Issuance Costs	$ 1	$ 1

Qualifying Debt (Details)

Qualifying Debt (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($) Trust	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Subordinated debt issuances		$ 817
Number of statutory business trusts | Trust	8
Junior subordinated debt	$ 73	$ 76
Junior Subordinated Debt
Debt Instrument [Line Items]
Weighted average interest rate	8%	7.11%
Junior Subordinated Debt | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Period of basis point spread	0.26%
Junior Subordinated Debt | Base Rate
Debt Instrument [Line Items]
Period of basis point spread	2.34%

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended					9 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, shares outstanding (shares)	12,000,000					12,000,000		12,000,000
Preferred stock dividend rate						4.25%
Preferred stock, par value (dollars per share)	$ 0.0001					$ 0.0001		$ 0.0001
Preferred stock, liquidation value (dollars per share)	25					25		$ 25
Cash dividend (dollars per share)	$ 0.27		$ 0.27			$ 0.27	$ 0.27
Dividends, preferred stock	$ 3.2		$ 3.2			$ 9.6	$ 9.6
Common stock issuance, net (shares)	0		600,000			0	1,900,000
Common stock issuance, net			$ 50				$ 157.7
Offering costs			0.3				1
Dividends paid	$ 39.4		$ 39			$ 118.2	$ 114.2
Cash dividend per share (dollars per share)	$ 0.36		$ 0.36	$ 0.35	$ 0.35	$ 0.36
Shares withheld (shares)	139		11,039			151,358	199,208
Weighted average price of treasury shares (dollars per share)	$ 48.56		$ 77.36			$ 72.47	$ 92.40
Series A Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, liquidation value (dollars per share)	$ 10,000					$ 10,000
ATM Offering
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average selling price (dollars per share)			$ 78.27				$ 83.89
Common stock issuance, net			$ 50.3				$ 158.7
Remaining shares available (shares)	1,107,769					1,107,769
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate grant date fair value	$ 0.3					$ 45.5
Stock-based compensation expense	(7.5)		(7.1)			$ (25.1)	(21.8)
Restricted Stock | Share-Based Payment Arrangement, Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period						3 years
Restricted Stock | Share-Based Payment Arrangement, Nonemployee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period						6 months
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period						3 years
Stock-based compensation expense	(1.4)	$ 2.5	(2.3)			$ (0.3)	(8.5)
Performance Shares | Grant year 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Vesting percentage		180%
Vested (shares)		157,784
Performance Shares | Grant year 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
Vested (shares)					203,646
Retained Earnings
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends, preferred stock	3.2		3.2			9.6	9.6
Dividends paid	$ 39.4		$ 39			$ 118.2	$ 114.2
Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, shares outstanding (shares)	12,000,000					12,000,000

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			$ (661)
Net other comprehensive loss	$ (121.8)	$ (218.3)	(71.3)	$ (751.9)
Ending balance	(733)		(733)
Unrealized holding gains (losses) on AFS securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(618.3)	(521.1)	(663.7)	16.7
Other comprehensive income before reclassifications	(120.2)	(219.9)	(94.3)	(752.3)
Amounts reclassified from accumulated other comprehensive income	(0.4)	0	19.1	(5.4)
Net other comprehensive loss	(120.6)	(219.9)	(75.2)	(757.7)
Ending balance	(738.9)	(741)	(738.9)	(741)
Unrealized holding gains (losses) on junior subordinated debt
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	6.9	3.5	3	(0.7)
Other comprehensive income before reclassifications	(1.2)	1.6	2.7	5.8
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Net other comprehensive loss	(1.2)	1.6	2.7	5.8
Ending balance	5.7	5.1	5.7	5.1
Impairment loss on securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	1.2	0	0	0
Other comprehensive income before reclassifications	0	0	1.2	0
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Net other comprehensive loss	0	0	1.2	0
Ending balance	1.2	0	1.2	0
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(610.5)	(517.9)	(661)	15.7
Other comprehensive income before reclassifications	(121.4)	(218.3)	(90.4)	(746.5)
Amounts reclassified from accumulated other comprehensive income	(0.4)	0	19.1	(5.4)
Net other comprehensive loss	(121.8)	(218.3)	(71.3)	(751.9)
Ending balance	(732.3)	(736.2)	(732.3)	(736.2)
Unrealized holding losses on SERP
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(0.3)	(0.3)	(0.3)	(0.3)
Other comprehensive income before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Net other comprehensive loss	0	0	0	0
Ending balance	$ (0.3)	$ (0.3)	$ (0.3)	$ (0.3)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) - Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amount reclassified from accumulated other comprehensive income	$ (0.1)	$ 0	$ 6.4	$ (1.8)
Amount reclassified from accumulated other comprehensive income	$ 0.4	$ 0	$ (19.1)	$ 5.4

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Derivative [Line Items]
Cumulative basis adjustment including carrying value of hedged items	$ 128		$ 128		$ 17
Collateral posted by this counterparty	72	$ 23	72	$ 23	$ 11
Designated as Hedging Instrument
Derivative [Line Items]
Cumulative basis adjustment including carrying value of hedged items	(12)		(12)
Cumulative basis adjustment	98		98
Interest income related to amortization of cumulative basis adjustment	$ 3	$ 3	$ 8.9	$ 7

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities - Schedule of Derivative Assets at Fair Value (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying Value of Hedged Assets/(Liabilities)	$ 3,863	$ 447
Cumulative basis adjustment including carrying value of hedged items	128	$ 17
Prepayable Fixed Rate Loans
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying value of loans	6,800
Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cumulative basis adjustment including carrying value of hedged items	(12)
Portfolio layer method derivative instruments	$ 3,500

Derivatives and Hedging Activ_5

Derivatives and Hedging Activities - Derivative Instruments, Gain (Loss) (Details) - Interest income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) on Swaps	$ 76.5	$ 27.5	$ 111.2	$ 76.3
Gain/(Loss) on Hedged Item	$ (76)	$ (27.5)	$ (110.7)	$ (76.2)

Derivatives and Hedging Activ_6

Derivatives and Hedging Activities - Schedule of Fair Value of the Company's Derivative Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	$ 28,564	$ 19,695	$ 32,358
Derivative Assets	257	36	285
Derivative Liabilities	46	21	237
Derivative Assets	133	33	293
Derivative Liabilities	72	40	281
Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	3,899	476	483
Derivative Assets	128	18	22
Derivative Liabilities	0	0	0
Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	28,564	19,695	32,358
Derivative Assets	67	29	393
Derivative Liabilities	47	39	292
Notional Amount, Margin
Derivative Assets, Margin	66	4	(100)
Derivative Liabilities, Margin	25	1	(11)
Interest rate contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Assets	148	18	22
Interest rate contracts | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	3,899	476	483
Derivative Assets	128	18	22
Derivative Liabilities	0	0	0
Interest rate contracts | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	3,187	1,538	2,155
Derivative Assets	20	6	5
Derivative Liabilities	20	6	5
Foreign currency contracts | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	74	250	146
Derivative Assets	1	1	2
Derivative Liabilities	0	9	1
Forward purchase contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Assets	1	1	3
Derivative Liabilities	20	12	242
Forward purchase contracts | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	3,397	2,709	8,226
Derivative Assets	1	1	3
Derivative Liabilities	20	13	249
Forward sales contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Assets	42	13	360
Derivative Liabilities	1	8	6
Forward sales contracts | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	6,256	4,985	11,792
Derivative Assets	42	16	380
Derivative Liabilities	1	8	6
Futures purchase contracts | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	150	0	0
Derivative Assets	0	0	0
Derivative Liabilities	0	0	0
Futures sales contracts | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	13,695	8,706	8,121
Derivative Assets	0	0	0
Derivative Liabilities	0	0	0
Interest rate lock commitments | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	1,761	1,459	1,918
Derivative Assets	3	5	3
Derivative Liabilities	6	3	31
Risk participation agreements | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	44	48	0
Derivative Assets	0	0	0
Derivative Liabilities	$ 0	$ 0	$ 0

Derivatives and Hedging Activ_7

Derivatives and Hedging Activities - Fair Value After Master Netting Agreements (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Assets	$ 257	$ 36	$ 285
Derivative asset, subject to master netting arrangement, after offset	214	19	52
Derivative asset, collateral, obligation to return cash, offset	66	4	(100)
Derivative asset, subject to master netting arrangement, liability offset	(43)	(17)	(233)
Derivative liability, fair value	(46)	(21)	(237)
Derivative liability, subject to master netting arrangement, after offset	(3)	(4)	(4)
Derivative liability, collateral, right to reclaim cash, offset	(25)	(1)	11
Derivative liability, subject to master netting arrangement, asset offset	43	17	233
Derivative asset, not subject to master netting arrangement	4	15	30
Derivative liability, not subject to master netting arrangement	(26)	(19)	(44)
Derivative asset, fair value, gross asset including not subject to master netting arrangement	261	51	315
Derivative asset, fair value, offset against collateral, net of not subject to master netting arrangement	218	34	82
Derivative liability, fair value, gross liability including not subject to master netting arrangement	(72)	(40)	(281)
Derivative liability, fair value, offset against collateral, net of not subject to master netting arrangement	(29)	(23)	(48)
Forward purchase contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Assets	1	1	3
Derivative asset, subject to master netting arrangement, after offset	1	1	3
Derivative liability, fair value	(20)	(12)	(242)
Derivative liability, subject to master netting arrangement, after offset	(20)	(12)	(242)
Derivative liability, not subject to master netting arrangement	0	(1)	(7)
Forward sales contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Assets	42	13	360
Derivative asset, subject to master netting arrangement, after offset	42	13	360
Derivative liability, fair value	(1)	(8)	(6)
Derivative liability, subject to master netting arrangement, after offset	(1)	(8)	(6)
Derivative asset, not subject to master netting arrangement	0	3	20
Interest rate contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Assets	148	18	22
Derivative asset, subject to master netting arrangement, after offset	148	18	22
Derivative asset, not subject to master netting arrangement	0	6	5
Derivative liability, not subject to master netting arrangement	(20)	(6)	(5)
Foreign currency contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative asset, not subject to master netting arrangement	1	1	2
Derivative liability, not subject to master netting arrangement	0	(9)	(1)
Interest rate lock commitments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative asset, not subject to master netting arrangement	3	5	3
Derivative liability, not subject to master netting arrangement	$ (6)	$ (3)	$ (31)

Derivatives and Hedging Activ_8

Derivatives and Hedging Activities - Net Gain (Loss) on Derivatives Included in Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total change in fair value of derivatives	$ 54.8	$ 99	$ 72.3	$ 433.9
Net gain on loan origination and sale activities
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total change in fair value of derivatives	54.8	99	72.3	433.9
Loan servicing fees, net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total change in fair value of derivatives	(104)	(68.4)	(121.7)	(155.2)
Interest rate lock commitments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total change in fair value of derivatives	(5.2)	(39.3)	(4.9)	(36.9)
Forward Contracts | Net gain on loan origination and sale activities
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total change in fair value of derivatives	68.7	145.3	87.5	487.6
Forward Contracts | Loan servicing fees, net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total change in fair value of derivatives	(19.2)	(18)	(34)	(60.9)
Interest rate contracts | Net gain on loan origination and sale activities
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total change in fair value of derivatives	(8.4)	(8.6)	(11.8)	(8.6)
Interest rate contracts | Loan servicing fees, net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total change in fair value of derivatives	(82.4)	(52.8)	(100)	(52.8)
Other Contract
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total change in fair value of derivatives	(0.3)	1.6	1.5	(8.2)
Future
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total change in fair value of derivatives	$ (2.4)	$ 2.4	$ 12.3	$ (41.5)

Earnings per Share (Details)

Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average shares - basic (shares)	108.3	107.5	108.3	107
Dilutive effect of stock award (shares)	0.2	0.4	0.1	0.4
Weighted average shares - diluted (shares)	108.5	107.9	108.4	107.4
Net income available to common stockholders	$ 213.4	$ 260.8	$ 564.9	$ 754.7
Earnings per share:
Basic (dollars per share)	$ 1.97	$ 2.43	$ 5.22	$ 7.06
Diluted (dollars per share)	$ 1.97	$ 2.42	$ 5.21	$ 7.03
Restricted Stock
Earnings per share:
Anti-dilutive stock options outstanding that were not included in computation of diluted earnings per common share	0	0	0.1	0

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Effective tax rate	22.10%	19.90%	20.50%	19.70%
Deferred tax assets, net	$ 365		$ 365		$ 311
Deferred tax valuation allowance	0		0		0
Investments in LIHTC and renewable energy	545		545		624
Investment-related Liabilities	332		332		$ 398
Amortization of tax credit investments	$ 27.9	$ 16.8	66.9	$ 45.6
Increase (Decrease) in Deferred Income Taxes			$ 54

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Loss Contingencies [Line Items]
Letters of credit expiration period			1 year
Other conditional commitments	$ 70		$ 70		$ 117
CRE loans occupied by owners	$ 2,600		$ 2,600		$ 2,400
Percentage of CRE loans occupied by owners	5.30%		5.30%		4.60%
Lease cost	$ 7	$ 6.2	$ 21.5	$ 18.3
Lessee, operating lease, other cost	1.5	$ 1.2	$ 4	$ 3.3
Commercial Real Estate Portfolio Segment | Loans Receivable | Credit Concentration Risk
Loss Contingencies [Line Items]
Percent of commercial real estate related loans			20%		18%
Commercial and industrial | Loans Receivable | Credit Concentration Risk
Loss Contingencies [Line Items]
Percent of commercial real estate related loans			37%		40%
Construction and land development | Loans Receivable | Credit Concentration Risk
Loss Contingencies [Line Items]
Percent of commercial real estate related loans			9%		8%
Unfunded Loan Commitment
Loss Contingencies [Line Items]
Loss contingency accrual	$ 38		$ 38		$ 47

Commitments and Contingencies_2

Commitments and Contingencies - Summary of Contractual Amounts for Unfunded Commitments and Letters of Credit (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Other Commitments [Line Items]
Total amount	$ 14,808	$ 19,318
Commitments to extend credit
Other Commitments [Line Items]
Unsecured loan commitments	1,024	1,209
Total amount	14,148	18,674
Credit card guarantees
Other Commitments [Line Items]
Total amount	414	379
Standby letters of credit
Other Commitments [Line Items]
Unsecured letters of credit	4	7
Total amount	$ 246	$ 265

Fair Value Accounting - Gains a

Fair Value Accounting - Gains and Losses from Fair Value Changes Included in Consolidated Statement of Operations (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized (loss) gain on junior subordinated debt, net of tax effect of $0.4, $(0.5), $(0.9), and $(1.9) respectively	$ (1.2)	$ 1.6	$ 2.7	$ 5.8
Junior Subordinated Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss)	$ (1.6)	$ 2.1	$ 3.6	$ 7.7

Fair Value Accounting - Fair Va

Fair Value Accounting - Fair Value of Assets and Liabilities (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	$ 9,689		$ 7,092
Investment securities - equity	121		160
Fair value of mortgage servicing rights	1,233	$ 1,007	1,148	$ 1,044	$ 826	$ 698
Junior subordinated debt	59		63
Cumulative basis adjustment including carrying value of hedged items	128		17
CLO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	2,165		2,706
Commercial MBS issued by GSEs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	199		97
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	360		390
Private label residential MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	1,068		1,199
Residential MBS issued by GSEs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	1,858		1,740
Tax-exempt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	775		891
U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	3,198
Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	66		69
Common Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity			3
CRA investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	24		49
Preferred Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	97		108
Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	9,689		7,092
Investment securities - equity	121		160
Loans HFS	1,734		1,173
Fair value of mortgage servicing rights	1,233		1,148
Derivative asset	195		47
Derivative liabilities	47		39
Fair Value, Recurring | CLO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	2,165		2,706
Fair Value, Recurring | Commercial MBS issued by GSEs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	199		97
Fair Value, Recurring | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	360		390
Fair Value, Recurring | Private label residential MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	1,068		1,199
Fair Value, Recurring | Residential MBS issued by GSEs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	1,858		1,740
Fair Value, Recurring | Tax-exempt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	775		891
Fair Value, Recurring | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	3,198
Fair Value, Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	66		69
Fair Value, Recurring | Common Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity			3
Fair Value, Recurring | CRA investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	24		49
Fair Value, Recurring | Preferred Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	97		108
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	3,226		24
Investment securities - equity	121		135
Loans HFS	0		0
Fair value of mortgage servicing rights	0		0
Derivative asset	0		0
Junior subordinated debt	0		0
Derivative liabilities	0		0
Margin, asset	66		4
Margin, liability	25		1
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | CLO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	0		0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial MBS issued by GSEs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	0		0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	0		0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Private label residential MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	0		0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential MBS issued by GSEs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	0		0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Tax-exempt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	0		0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	3,198
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	28		24
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Common Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity			3
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | CRA investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	24		24
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Preferred Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	97		108
Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	6,463		7,068
Investment securities - equity	0		25
Loans HFS	1,731		1,172
Fair value of mortgage servicing rights	0		0
Derivative asset	192		42
Junior subordinated debt	0		0
Derivative liabilities	41		36
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | CLO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	2,165		2,706
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Commercial MBS issued by GSEs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	199		97
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	360		390
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Private label residential MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	1,068		1,199
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Residential MBS issued by GSEs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	1,858		1,740
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Tax-exempt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	775		891
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	0
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	38		45
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Common Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity			0
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | CRA investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	0		25
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Preferred Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	0		0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	0		0
Investment securities - equity	0		0
Loans HFS	3		1
Fair value of mortgage servicing rights	1,233		1,148
Derivative asset	3		5
Junior subordinated debt	59		63
Derivative liabilities	6		3
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | CLO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	0		0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Commercial MBS issued by GSEs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	0		0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	0		0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Private label residential MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	0		0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Residential MBS issued by GSEs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	0		0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Tax-exempt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	0		0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total AFS debt securities	0		0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Common Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity			0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | CRA investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	0		0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Preferred Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity	$ 0		$ 0

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		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Unrealized gain (loss) recorded in OCI	$ (1.2)	$ 1.6	$ 2.7	$ 5.8
Junior subordinated debt	59		59		$ 63
Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Junior subordinated debt	59		59		$ 63
Junior Subordinated Debt
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Change in fair value	$ (1.6)	2.1	$ 3.6	7.7
Debt Instrument, measurement input	0.0988		0.0988		0.0813
Junior Subordinated Debt | Significant Unobservable Inputs (Level 3)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Junior subordinated debt	$ 59		$ 59		$ 63
Junior Subordinated Debt | Fair Value, Recurring
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(57.3)	(61.8)	(62.5)	(67.4)
Ending balance	$ (58.9)	$ (59.7)	$ (58.9)	$ (59.7)

Fair Value Accounting - Chang_2

Fair Value Accounting - Change in Level 3 Assets Unobservable Inputs (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Mark to market adjustments	$ 0	$ 0	$ 4	$ 0
Servicing Contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	1,007	826	1,148	698
Purchases and additions	266	180	653	578
Sales and payments	(112)	0	(611)	(350)
Change in fair value	98	63	114	206
Realization of cash flows	(26)	(25)	(75)	(88)
Balance, end of period	1,233	1,044	1,233	1,044
Change in unrealized gains for the period	97	62	128	150
Interest rate lock commitments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	2	12	2	9
Purchases and additions	4,616	5,205	11,772	16,104
Settlement of IRLCs upon acquisition or origination of loans HFS	(4,619)	(5,235)	(11,773)	(16,099)
Change in fair value	(2)	(10)	(4)	(42)
Balance, end of period	(3)	(28)	(3)	(28)
Change in unrealized gains for the period	$ (3)	$ (28)	$ (3)	$ (28)

Fair Value Accounting - Unobser

Fair Value Accounting - Unobservable Inputs (Details) $ in Millions	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Fair Value, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans HFI	$ 367	$ 295
Other assets acquired through foreclosure	8	11
Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans HFI	367	295
Other assets acquired through foreclosure	$ 8	$ 11
Minimum | Third party appraisal | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans and Finance Receivables | Valuation Technique, Collateral Method
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans HFI, measurement input	6%	6%
Minimum | Third party appraisal | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Other Assets | Valuation Technique, Collateral Method
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets acquired through foreclosure, measurement input	4%	4%
Minimum | Discount rate | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans and Finance Receivables | Valuation Technique, Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans HFI, measurement input	3%	3%
Minimum | Scheduled cash collections | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans and Finance Receivables | Valuation Technique, Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans HFI, measurement input	0%	0%
Minimum | Proceeds from non-real estate collateral | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans and Finance Receivables | Valuation Technique, Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans HFI, measurement input	0%	0%
Minimum | Option Adjusted Spread
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing asset, measurement input	88	190
Minimum | Conditional Prepayment Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing asset, measurement input	0.086	0.085
Minimum | Recapture Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing asset, measurement input	0.200	0.200
Minimum | Servicing Fee Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing asset, measurement input	25	25
Minimum | Cost to Service
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing asset, measurement input	93	87
Minimum | Servicing Fee Multiple
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, measurement input	3.2	2.9
Minimum | Pull-through Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, measurement input	0.76	0.69
Maximum | Third party appraisal | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans and Finance Receivables | Valuation Technique, Collateral Method
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans HFI, measurement input	10%	10%
Maximum | Third party appraisal | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Other Assets | Valuation Technique, Collateral Method
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets acquired through foreclosure, measurement input	10%	10%
Maximum | Discount rate | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans and Finance Receivables | Valuation Technique, Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans HFI, measurement input	8%	8%
Maximum | Scheduled cash collections | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans and Finance Receivables | Valuation Technique, Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans HFI, measurement input	20%	20%
Maximum | Proceeds from non-real estate collateral | Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans and Finance Receivables | Valuation Technique, Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans HFI, measurement input	70%	70%
Maximum | Option Adjusted Spread
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing asset, measurement input	252	621
Maximum | Conditional Prepayment Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing asset, measurement input	0.184	0.185
Maximum | Recapture Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing asset, measurement input	0.200	0.200
Maximum | Servicing Fee Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing asset, measurement input	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	100	94
Maximum | Servicing Fee Multiple
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, measurement input	5.8	5.5
Maximum | Pull-through Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, measurement input	1	1
Weighted Average | Option Adjusted Spread
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing asset, measurement input	233	378
Weighted Average | Conditional Prepayment Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing asset, measurement input	13.7	13.4
Weighted Average | Recapture Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing asset, measurement input	20	0.200
Weighted Average | Servicing Fee Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing asset, measurement input	33.9	33.2
Weighted Average | Cost to Service
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing asset, measurement input	94	90
Weighted Average | Servicing Fee Multiple
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, measurement input	4.5	4.3
Weighted Average | Pull-through Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, measurement input	91	89

Fair Value Accounting - Aggrega

Fair Value Accounting - Aggregate Difference Between Fair Value and UPB for Fair Value Option Loans (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, option, loans held as assets, current through 89 days	$ 1,732	$ 1,172
UPB, option, loans held as assets, current through 89 days	1,705	1,138
Fair value, option, loans held as assets, current through 89 days, aggregate difference	27	34
Fair Value, 90 days or more delinquent	2	1
UPB, op days or more delinquent	3	1
Aggregated difference, 90 days or more delinquent	(1)	0
Loans held-for-sale, fair value	1,734	1,173
Fair value option, aggregate difference	26	34
Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financing receivable, UPB	$ 1,708	$ 1,139

Fair Value Accounting - Assets

Fair Value Accounting - Assets Measured at Fair Value on Nonrecurring Basis (Detail) - Fair Value, Nonrecurring - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans HFI	$ 367	$ 295
Other assets acquired through foreclosure	8	11
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans HFI	0	0
Other assets acquired through foreclosure	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans HFI	0	0
Other assets acquired through foreclosure	0	0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans HFI	367	295
Other assets acquired through foreclosure	$ 8	$ 11

Fair Value Accounting - Estimat

Fair Value Accounting - Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Financial assets
HTM	$ 1,401	$ 1,289
AFS	9,689	7,092
Investment securities - equity	121	160
Loans HFS	1,766	1,184
Net loans HFI	49,120	51,552
Mortgage servicing rights	1,233	1,148
Accrued interest receivable	5	3
Financial liabilities
Total deposits	54,287	53,644
Other borrowings	8,745	6,299
Junior subordinated debt	59	63
Fair Value, Nonrecurring | Carrying Amount
Financial assets
HTM	1,401	1,289
Net loans HFI	49,120	51,552
Accrued interest receivable	348	357
Financial liabilities
Total deposits	54,287	53,644
Other borrowings	8,745	6,299
Junior subordinated debt	890	893
Interest Payable, Current	176	35
Fair Value, Nonrecurring | Estimate of Fair Value Measurement
Financial assets
HTM	1,140	1,112
Net loans HFI	45,202	47,679
Accrued interest receivable	348	357
Financial liabilities
Total deposits	54,297	54,297
Other borrowings	8,659	6,261
Junior subordinated debt	751	810
Interest Payable, Current	176	35
Fair Value, Nonrecurring | Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets
HTM	0	0
Net loans HFI	0	0
Accrued interest receivable	0	0
Financial liabilities
Total deposits	0	0
Other borrowings	0	0
Junior subordinated debt	0	0
Interest Payable, Current	0	0
Fair Value, Nonrecurring | Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2)
Financial assets
HTM	1,140	1,112
Net loans HFI	0	0
Accrued interest receivable	348	357
Financial liabilities
Total deposits	54,297	54,297
Other borrowings	8,659	6,261
Junior subordinated debt	680	735
Interest Payable, Current	176	35
Fair Value, Nonrecurring | Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3)
Financial assets
HTM	0	0
Net loans HFI	45,202	47,679
Accrued interest receivable	0	0
Financial liabilities
Total deposits	0	0
Other borrowings	0	0
Junior subordinated debt	71	75
Interest Payable, Current	0	0
Fair Value, Recurring
Financial assets
AFS	9,689	7,092
Investment securities - equity	121	160
Derivative asset	195	47
Financial liabilities
Derivative liabilities	47	39
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets
AFS	3,226	24
Investment securities - equity	121	135
Derivative asset	0	0
Financial liabilities
Junior subordinated debt	0	0
Derivative liabilities	0	0
Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Financial assets
AFS	6,463	7,068
Investment securities - equity	0	25
Derivative asset	192	42
Financial liabilities
Junior subordinated debt	0	0
Derivative liabilities	41	36
Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Financial assets
AFS	0	0
Investment securities - equity	0	0
Derivative asset	3	5
Financial liabilities
Junior subordinated debt	59	63
Derivative liabilities	6	3
Fair Value, Recurring | Carrying Amount
Financial assets
AFS	9,689	7,092
Investment securities - equity	121	160
Derivative asset	195	51
Loans HFS	1,766	1,184
Mortgage servicing rights	1,233	1,148
Financial liabilities
Derivative liabilities	47	40
Fair Value, Recurring | Estimate of Fair Value Measurement
Financial assets
AFS	9,689	7,092
Investment securities - equity	121	160
Derivative asset	195	47
Loans HFS	1,765	1,173
Mortgage servicing rights	1,233	1,148
Financial liabilities
Derivative liabilities	47	39
Fair Value, Recurring | Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets
AFS	3,226	24
Investment securities - equity	121	135
Derivative asset	0	0
Loans HFS	0	0
Mortgage servicing rights	0	0
Financial liabilities
Derivative liabilities	0	0
Fair Value, Recurring | Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2)
Financial assets
AFS	6,463	7,068
Investment securities - equity	0	25
Derivative asset	192	42
Loans HFS	1,743	1,172
Mortgage servicing rights	0	0
Financial liabilities
Derivative liabilities	41	36
Fair Value, Recurring | Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3)
Financial assets
AFS	0	0
Investment securities - equity	0	0
Derivative asset	3	5
Loans HFS	22	1
Mortgage servicing rights	1,233	1,148
Financial liabilities
Derivative liabilities	$ 6	$ 3

Fair Value Accounting - Additio

Fair Value Accounting - Additional Information (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022	Dec. 31, 2022 USD ($)
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans with an allowance recorded	$ 5		$ 7
Junior Subordinated Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, measurement input	0.0988		0.0813
Percentage of LIBOR	5.40%	4.77%
Period of basis point spread	4.48%	3.36%
Fair Value, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans HFI	$ 367		$ 295
Other assets acquired through foreclosure	8		11
Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans HFI	367		295
Other assets acquired through foreclosure	$ 8		$ 11

Segments - Operating Segment In

Segments - Operating Segment Information (Detail) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) Reportable_Business_Segments	Sep. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Operating Statistics [Line Items]
Reportable segments | Reportable_Business_Segments			3
Goodwill weighting assigned			100%
Cash, cash equivalents, and investment securities	$ 14,920		$ 14,920			$ 9,803
Loans HFS	1,766		1,766			1,184
Loans HFI, net of deferred fees and costs	49,447		49,447			51,862
Less: allowance for credit losses	(327.4)	$ (304.1)	(327.4)	$ (304.1)	$ (321.1)	(309.7)	$ (273.2)	$ (252.5)
Net loans HFI	49,120		49,120			51,552
Other assets acquired through foreclosure, net	8		8			11
Goodwill and intangible assets, net	672		672			680
Other assets	4,405		4,405			4,504
Total assets	70,891		70,891			67,734
Total deposits	54,287		54,287			53,644
Borrowings and qualifying debt	9,635		9,635			7,192
Other liabilities	1,223		1,223			1,542
Total liabilities	65,145		65,145			62,378
Allocated equity:	5,746	5,020.8	5,746	5,020.8	$ 5,684.9	5,356	$ 4,958.8	$ 4,962.6
Total liabilities and stockholders' equity	70,891		70,891			67,734
Excess funds provided (used)	0		0			0
Net interest income	587	602.1	1,747.2	1,576.6
Provision for (recovery of) credit losses	12.1	28.5	53.3	65
Net interest income after provision for credit losses	574.9	573.6	1,693.9	1,511.6
Non-interest income	129.2	61.8	190.2	263.1
Non-interest expense	426.2	305.8	1,161.5	823.3
Income before provision for income taxes	277.9	329.6	722.6	951.4
Income tax expense (benefit)	61.3	65.6	148.1	187.1
Net income	216.6	264	$ 574.5	764.3
Minimum
Operating Statistics [Line Items]
Equity capital weighting assigned			0%
Maximum
Operating Statistics [Line Items]
Equity capital weighting assigned			20%
Operating Segments | Commercial Segment
Operating Statistics [Line Items]
Cash, cash equivalents, and investment securities	11		$ 11			12
Loans HFS	0		0			0
Loans HFI, net of deferred fees and costs	28,720		28,720			31,414
Less: allowance for credit losses	(277)		(277)			(262)
Net loans HFI	28,443		28,443			31,152
Other assets acquired through foreclosure, net	8		8			11
Goodwill and intangible assets, net	292		292			293
Other assets	409		409			435
Total assets	29,163		29,163			31,903
Total deposits	22,643		22,643			29,494
Borrowings and qualifying debt	9		9			27
Other liabilities	136		136			83
Total liabilities	22,788		22,788			29,604
Allocated equity:	2,672		2,672			2,684
Total liabilities and stockholders' equity	25,460		25,460			32,288
Excess funds provided (used)	(3,703)		(3,703)			385
Net interest income	331.5	413	1,077.5	1,118.3
Provision for (recovery of) credit losses	14.1	19.9	29.7	53.1
Net interest income after provision for credit losses	317.4	393.1	1,047.8	1,065.2
Non-interest income	25.9	16.1	(40.1)	51
Non-interest expense	147.2	111	430.9	341.4
Income before provision for income taxes	196.1	298.2	576.8	774.8
Income tax expense (benefit)	64.9	71	125.1	184.4
Net income	131.2	227.2	451.7	590.4
Operating Segments | Consumer Related Segment
Operating Statistics [Line Items]
Cash, cash equivalents, and investment securities	125		125			0
Loans HFS	1,766		1,766			1,184
Loans HFI, net of deferred fees and costs	20,727		20,727			20,448
Less: allowance for credit losses	(50)		(50)			(48)
Net loans HFI	20,677		20,677			20,400
Other assets acquired through foreclosure, net	0		0			0
Goodwill and intangible assets, net	380		380			387
Other assets	1,902		1,902			2,180
Total assets	24,850		24,850			24,151
Total deposits	25,094		25,094			18,492
Borrowings and qualifying debt	2,164		2,164			340
Other liabilities	264		264			656
Total liabilities	27,522		27,522			19,488
Allocated equity:	1,805		1,805			1,691
Total liabilities and stockholders' equity	29,327		29,327			21,179
Excess funds provided (used)	4,477		4,477			(2,972)
Net interest income	243.8	235	647.8	637.7
Provision for (recovery of) credit losses	(3)	7.6	0.4	12.9
Net interest income after provision for credit losses	246.8	227.4	647.4	624.8
Non-interest income	89.4	44.2	226.6	198
Non-interest expense	267.3	178.4	691.6	442.5
Income before provision for income taxes	68.9	93.2	182.4	380.3
Income tax expense (benefit)	28.8	22.3	39.4	90.8
Net income	40.1	70.9	143	289.5
Corporate & Other | Corporate And Other Segment
Operating Statistics [Line Items]
Cash, cash equivalents, and investment securities	14,784		14,784			9,791
Loans HFS	0		0			0
Loans HFI, net of deferred fees and costs	0		0			0
Less: allowance for credit losses	0		0			0
Net loans HFI	0		0			0
Other assets acquired through foreclosure, net	0		0			0
Goodwill and intangible assets, net	0		0			0
Other assets	2,094		2,094			1,889
Total assets	16,878		16,878			11,680
Total deposits	6,550		6,550			5,658
Borrowings and qualifying debt	7,462		7,462			6,825
Other liabilities	823		823			803
Total liabilities	14,835		14,835			13,286
Allocated equity:	1,269		1,269			981
Total liabilities and stockholders' equity	16,104		16,104			14,267
Excess funds provided (used)	(774)		(774)			$ 2,587
Net interest income	11.7	(45.9)	21.9	(179.4)
Provision for (recovery of) credit losses	1	1	23.2	(1)
Net interest income after provision for credit losses	10.7	(46.9)	(1.3)	(178.4)
Non-interest income	13.9	1.5	3.7	14.1
Non-interest expense	11.7	16.4	39	39.4
Income before provision for income taxes	12.9	(61.8)	(36.6)	(203.7)
Income tax expense (benefit)	(32.4)	(27.7)	(16.4)	(88.1)
Net income	$ 45.3	$ (34.1)	$ (20.2)	$ (115.6)

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Revenue	$ 29.6	$ 9	$ 67.9	$ 34.6

Mergers, Acquisitions and Dis_3

Mergers, Acquisitions and Dispositions (Details) - USD ($) $ in Millions		9 Months Ended
	Jan. 25, 2022	Sep. 30, 2022	Sep. 30, 2023
Business Acquisition [Line Items]
Goodwill			$ 527
Digital Disbursements
Business Acquisition [Line Items]
Consideration transferred	$ 57
Cash paid at closing	50.6
Contingent consideration	$ 6.4
Performance period	3 years
Acquisition and restructure expenses		$ 0.4
Cash and cash equivalents	$ 0.6
Identified intangible assets	20.1
Other assets	0.1
Total assets	20.8
Other liabilities	0.4
Total liabilities	0.4
Net assets acquired	20.4
Goodwill	36.6
Goodwill expected to be deductible for tax purposes	31.8
Customer relationships | Digital Disbursements
Business Acquisition [Line Items]
Identified intangible assets	$ 15.7
Estimated Useful Life	7 years
Developed technology | Digital Disbursements
Business Acquisition [Line Items]
Identified intangible assets	$ 4.1
Estimated Useful Life	5 years
Trade name | Digital Disbursements
Business Acquisition [Line Items]
Identified intangible assets	$ 0.3
Estimated Useful Life	10 years