Ally Financial (ALLY) 10-K 19 Feb 25 2024 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2024	Feb. 14, 2025	Jun. 28, 2024
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	1-3754
Entity Registrant Name	ALLY FINANCIAL INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	38-0572512
Entity Address, Address Description	Ally Detroit Center
Entity Address, Address Line One	500 Woodward Ave.
Entity Address, Address Line Two	Floor 10
Entity Address, City or Town	Detroit
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	48226
City Area Code	866
Local Phone Number	710-4623
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	ALLY
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
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
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity public float			$ 12.1
Entity Common Stock, Shares Outstanding		307,113,093
Documents Incorporated by Reference	portions of the Registrant’s Proxy Statement for the annual meeting of shareholders to be held on May 6, 2025, are incorporated by reference in this Form 10-K in response to Items 10, 11, 12, 13, and 14 of Part III.
Entity Central Index Key	0000040729
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Amendment Flag	false

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2024
Audit Information [Abstract]
Auditor Name	Deloitte & Touche LLP
Auditor Location	Detroit, Michigan
Auditor Firm ID	34

Consolidated Statement of Incom

Consolidated Statement of Income - USD ($) shares in Thousands, $ in Millions		12 Months Ended
		Dec. 31, 2024		Dec. 31, 2023	Dec. 31, 2022
Financing revenue and other interest income
Interest and fees on finance receivables and loans		$ 11,394		$ 11,020	$ 8,099
Interest on loans held-for-sale		50		34	31
Interest and dividends on investment securities and other earning assets		1,037		1,022	841
Interest on cash and cash equivalents		386		332	54
Operating leases		1,355		1,550	1,596
Total financing revenue and other interest income		14,222		13,958	10,621
Interest expense
Interest on deposits		6,388		5,819	1,987
Interest on short-term borrowings		66		73	107
Interest on long-term debt		1,017		1,001	763
Interest on other		1		4	0
Total interest expense		7,472		6,897	2,857
Net depreciation expense on operating lease assets		736		840	914
Net financing revenue and other interest income		6,014		6,221	6,850
Other revenue
Insurance premiums and service revenue earned		1,413		1,271	1,151
Gain on mortgage and automotive loans, net		24		16	52
Other gain (loss) on investments, net		72		144	(120)
Other income, net of losses		658		582	495
Total other revenue		2,167		2,013	1,578
Total net revenue		8,181		8,234	8,428
Provision for credit losses		2,166		1,968	1,399
Noninterest expense
Compensation and benefits expense		1,842		1,901	1,900
Insurance losses and loss adjustment expenses		544		422	280
Goodwill impairment		118		149	0
Other operating expenses		2,675		2,691	2,507
Total noninterest expense		5,179		5,163	4,687
Income (loss) from continuing operations before income tax expense		836		1,103	2,342
Income tax expense from continuing operations		167		144	627
Net income from continuing operations		669		959	1,715	[1]
Loss from discontinued operations, net of tax		(1)		(2)	(1)
Net income		668		957	1,714
Net income from continuing operations attributable to common shareholders	[1]	559		849	1,605
Loss from discontinued operations, net of tax	[1]	(1)		(2)	(1)
Net income attributable to common shareholders	[1]	$ 558		$ 847	$ 1,604
Basic weighted-average common shares outstanding (in shares)	[1],[2]	306,913		303,751	316,690
Diluted weighted-average common shares outstanding (in shares)	[1],[2]	310,160		305,135	318,629
Basic earnings per common share
Net income from continuing operations (in dollars per share)	[1]	$ 1.82		$ 2.79	$ 5.07
Loss from discontinued operations, net of tax (in dollars per share)	[1]	0		(0.01)	0
Net income (in dollars per share)	[1]	1.82		2.79	5.06
Diluted earnings per common share
Net income from continuing operations (in dollars per share)	[1]	1.80		2.78	5.04
Loss from discontinued operations, net of tax (in dollars per share)	[1]	0		(0.01)	0
Net income (in dollars per share)	[1]	1.80		2.77	5.03
Cash dividends declared per common share (in dollars per share)	[1]	$ 1.20		$ 1.20	$ 1.20
Preferred stock dividends — Series B
Noninterest expense
Preferred stock dividends		$ 63	[1]	$ 63	$ 63	[1]
Preferred stock dividends — Series C
Noninterest expense
Preferred stock dividends		$ 47	[1]	$ 47	$ 47	[1]
[1] Figures in the table may not recalculate exactly due to rounding. Earnings per share is calculated based on unrounded numbers. Includes shares related to share-based compensation that vested but were not yet issued.

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 668	$ 957	$ 1,714
Available-for-sale securities
Net unrealized (losses) gains arising during the period	(158)	260	(3,982)
Net unrealized loss on securities transferred to held-to-maturity	0	693	0
Less: Net realized gains reclassified to net income	3	4	18
Net change	(161)	949	(4,000)
Held-to-maturity securities
Net unrealized loss on securities transferred from available-for-sale	0	(693)	0
Less: Amortization of amounts previously recorded upon transfer from available-for-sale	(66)	(11)	0
Net change	66	(682)	0
Translation adjustments
Net unrealized (losses) gains arising during the period	(13)	5	(8)
Net investment hedges
Net unrealized gains (losses) arising during the period	12	(2)	7
Translation adjustments and net investment hedges, net change	(1)	3	(1)
Cash flow hedges
Net unrealized losses arising during the period	(21)	(16)	(2)
Less: Net realized (losses) gains reclassified to net income	(9)	11	15
Net change	(12)	(27)	(17)
Defined benefit pension plans
Net unrealized gains arising during the period	0	0	2
Less: Net realized losses reclassified to net income	0	0	(115)
Net change	0	0	117
Other comprehensive (loss) income, net of tax	(108)	243	(3,901)
Comprehensive income (loss)	$ 560	$ 1,200	$ (2,187)

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Cash and cash equivalents
Noninterest-bearing	$ 522	$ 638
Interest-bearing	9,770	6,307
Total cash and cash equivalents	10,292	6,945
Equity securities	871	810
Available-for-sale securities (amortized cost of $26,810 and $28,416)	22,410	24,415
Held-to-maturity securities (fair value of $4,293 and $4,729)	4,346	4,680
Loans held-for-sale, net	160	400
Finance receivables and loans, net
Finance receivables and loans, net of unearned income	136,030	139,439
Allowance for loan losses	(3,714)	(3,587)
Total finance receivables and loans, net	132,316	135,852
Investment in operating leases, net	7,991	9,085
Premiums receivable and other insurance assets	2,790	2,749
Other assets	10,660	9,418
Assets of operations held-for-sale	0	1,975
Total assets	191,836	196,329
Deposit liabilities
Noninterest-bearing	131	139
Interest-bearing	151,443	154,527
Total deposit liabilities	151,574	154,666
Short-term borrowings	1,625	3,297
Long-term debt	17,495	17,570
Interest payable	890	858
Unearned insurance premiums and service revenue	3,535	3,492
Accrued expenses and other liabilities	2,814	2,726
Liabilities of operations held-for-sale	0	17
Total liabilities	177,933	182,626
Commitments and contingencies (refer to Note 28 and Note 29)
Equity
Common stock and paid-in capital ($0.01 par value, shares authorized 1,100,000,000; issued 515,777,584 and 511,861,447; and outstanding 305,387,550 and 302,459,258)	22,142	21,975
Preferred stock	2,324	2,324
Retained earnings	270	91
Accumulated other comprehensive loss	(3,924)	(3,816)
Treasury stock, at cost (210,390,034 and 209,402,189 shares)	(6,909)	(6,871)
Total equity	13,903	13,703
Total liabilities and equity	$ 191,836	$ 196,329

Consolidated Balance Sheet (Par

Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Available-for-sale securities, amortized cost	$ 26,810	$ 28,416
Held-to-maturity securities, fair value	$ 4,293	$ 4,729
Common stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,100,000,000	1,100,000,000
Common stock, shares issued (in shares)	515,777,584	511,861,447
Common stock, shares outstanding (in shares)	305,387,550	302,459,258
Treasury stock, common, shares (in shares)	210,390,034	209,402,189

Consolidated Balance Sheet (VIE

Consolidated Balance Sheet (VIEs) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Finance receivables and loans, net	$ 136,030	$ 139,439
Allowance for loan losses	(3,714)	(3,587)
Total finance receivables and loans, net	132,316	135,852
Other assets	10,660	9,418
Total assets	191,836	196,329
Long-term debt	17,495	17,570
Accrued expenses and other liabilities	2,814	2,726
Total liabilities	177,933	182,626
Consumer
Finance receivables and loans, net	103,285	104,977
Consumer | Automotive
Finance receivables and loans, net	83,757	84,320
Allowance for loan losses	(3,170)	(3,083)
On‑balance sheet variable interest entities
Allowance for loan losses	(172)	(254)
Total finance receivables and loans, net	4,333	6,614
Other assets	333	461
Total assets	4,666	7,075
Long-term debt	1,561	1,509
Accrued expenses and other liabilities	4	4
Total liabilities	1,565	1,513
On‑balance sheet variable interest entities | Consumer | Automotive
Finance receivables and loans, net	4,505	6,868
Total assets	12,821	16,329
Total liabilities	$ 1,683	$ 1,614

Consolidated Statement of Chang

Consolidated Statement of Changes in Equity - USD ($) $ in Millions	Total	Adjustments	[1]	As Adjusted	Preferred stock dividends — Series B	Preferred stock dividends — Series C	Common stock and paid-in capital	Common stock and paid-in capital As Adjusted	Preferred stock	Preferred stock As Adjusted	Retained earnings (accumulated deficit)	Retained earnings (accumulated deficit) Adjustments	[1]	Retained earnings (accumulated deficit) As Adjusted	Retained earnings (accumulated deficit) Preferred stock dividends — Series B	Retained earnings (accumulated deficit) Preferred stock dividends — Series C	Accumulated other comprehensive loss	Accumulated other comprehensive loss As Adjusted	Treasury stock	Treasury stock As Adjusted
Beginning balance at Dec. 31, 2021	$ 17,050						$ 21,671		$ 2,324		$ (1,599)						$ (158)		$ (5,188)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,714										1,714
Preferred stock dividends					$ (63)	$ (47)									$ (63)	$ (47)
Share-based compensation	145						145
Other comprehensive income (loss)	(3,901)																(3,901)
Common stock repurchases	(1,650)																		(1,650)
Common stock dividends	(389)										(389)
Ending balance at Dec. 31, 2022	12,859						21,816		2,324		(384)						(4,059)		(6,838)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	957										957
Preferred stock dividends					(63)	(47)									(63)	(47)
Share-based compensation	159						159
Other comprehensive income (loss)	243																243
Common stock repurchases	(33)																		(33)
Common stock dividends	(372)										(372)
Ending balance at Dec. 31, 2023	13,703	$ (2)		$ 13,701			21,975	$ 21,975	2,324	$ 2,324	91	$ (2)		$ 89			(3,816)	$ (3,816)	(6,871)	$ (6,871)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	668										668
Preferred stock dividends					$ (63)	$ (47)									$ (63)	$ (47)
Share-based compensation	167						167
Other comprehensive income (loss)	(108)																(108)
Common stock repurchases	(38)																		(38)
Common stock dividends	(377)										(377)
Ending balance at Dec. 31, 2024	$ 13,903						$ 22,142		$ 2,324		$ 270						$ (3,924)		$ (6,909)
[1] Refer to the section titled Recently Adopted Accounting Standards in Note 1 for additional information.

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Equity (Parenthetical)	12 Months Ended
	Dec. 31, 2023 $ / shares
Statement of Stockholders' Equity [Abstract]
Cash dividends declared per common share (in dollars per share)	$ 1.20	[1]
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2023-02	[2]
[1] Figures in the table may not recalculate exactly due to rounding. Earnings per share is calculated based on unrounded numbers. Refer to the section titled Recently Adopted Accounting Standards in Note 1 for additional information.

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating activities
Net income		$ 668	$ 957	$ 1,714
Reconciliation of net income to net cash provided by operating activities
Depreciation and amortization		1,199	1,227	1,327
Goodwill impairment		118	149	0
Provision for credit losses		2,166	1,968	1,399
Gain on mortgage and automotive loans, net		(24)	(16)	(52)
Other (gain) loss on investments, net		(72)	(144)	120
Originations and purchases of loans held-for-sale		(2,223)	(2,406)	(3,907)
Proceeds from sales and repayments of loans held-for-sale		2,636	2,811	3,774
Net change in
Deferred income taxes		(436)	(81)	553
Interest payable		32	450	198
Other assets		73	(417)	957
Other liabilities		127	(91)	(103)
Other, net		264	150	267
Net cash provided by operating activities		4,528	4,557	6,247
Investing activities
Purchases of equity securities		(884)	(339)	(539)
Proceeds from sales of equity securities		915	356	846
Purchases of available-for-sale securities		(717)	(518)	(6,723)
Proceeds from sales of available-for-sale securities		168	337	820
Proceeds from repayments of available-for-sale securities		2,143	2,057	4,276
Purchases of held-to-maturity securities		0	0	(47)
Proceeds from repayments of held-to-maturity securities		476	123	154
Purchases of finance receivables and loans held-for-investment		(3,572)	(4,233)	(7,165)
Proceeds from sales of finance receivables and loans initially held-for-investment		1,400	258	55
Originations and repayments of finance receivables and loans held-for-investment and other, net		3,282	(5,040)	(7,927)
Purchases of operating lease assets		(3,460)	(2,759)	(3,532)
Disposals of operating lease assets		3,808	3,228	3,023
Proceeds from sale of a business unit, net		1,956	0	0
Net change in nonmarketable equity investments		84	(73)	27
Other, net		(608)	(579)	(531)
Net cash provided by (used in) investing activities		4,991	(7,182)	(17,263)
Financing activities
Net change in short-term borrowings		(1,672)	898	2,399
Net (decrease) increase in deposits		(3,227)	2,342	10,703
Proceeds from issuance of long-term debt		4,337	5,705	7,125
Repayments of long-term debt		(4,484)	(4,595)	(6,464)
Purchases of land and buildings in satisfaction of finance lease liabilities		0	0	(44)
Repurchases of common stock		(38)	(33)	(1,650)
Common stock dividends paid		(372)	(368)	(384)
Preferred stock dividends paid		(110)	(110)	(110)
Net cash (used in) provided by financing activities		(5,566)	3,839	11,575
Effect of exchange-rate changes on cash and cash equivalents and restricted cash		(12)	3	(7)
Net increase in cash and cash equivalents and restricted cash		3,941	1,217	552
Cash and cash equivalents and restricted cash at beginning of year		7,439	6,222	5,670
Cash and cash equivalents and restricted cash at December 31,		11,380	7,439	6,222
Cash paid (received) for
Interest		7,354	6,357	2,583
Income taxes		135	(27)	(425)
Noncash items
Held-to-maturity securities received in consideration for loans sold		56	82	0
Available-for-sale securities transferred to held-to-maturity securities		0	3,644	0
Loans held-for-sale transferred to finance receivables and loans held-for-investment		34	208	120
Deconsolidation of debt related to loans sold		0	1,373	0
Finance receivables and loans held-for-investment transferred to loans held-for-sale		1,731	3,739	23
Transfer of equity-method investments to equity securities		0	0	40
Transfer of nonmarketable equity investments to equity securities		0	19	1
Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract]
Cash and cash equivalents on the Consolidated Balance Sheet		10,292	6,945
Restricted cash and cash equivalents and restricted cash held for securitization trusts included in other assets on the Consolidated Balance Sheet	[1]	1,088	494
Total cash and cash equivalents and restricted cash in the Consolidated Statement of Cash Flows		$ 11,380	$ 7,439	$ 6,222
[1] Refer to Note 13 for additional details describing the nature of restricted cash and cash equivalent balances.

Description of Business, Basis

Description of Business, Basis of Presentation, and Significant Accounting Policies	12 Months Ended
	Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business, Basis of Presentation, and Significant Accounting Policies	Description of Business, Basis of Presentation, and Significant Accounting Policies Ally Financial Inc. (together with its consolidated subsidiaries unless the context otherwise requires, Ally, the Company, we, us, or our) is a financial-services company with the nation’s largest all-digital bank and an industry-leading automotive financing and insurance business, driven by a mission to “Do It Right” and be a relentless ally for customers and communities. The Company serves customers with deposits and securities brokerage and investment advisory services as well as automotive financing and insurance offerings. The Company also includes a seasoned corporate finance business that offers capital for equity sponsors and middle-market companies. Ally is a Delaware corporation and is registered as a BHC under the BHC Act, and an FHC under the GLB Act. Consolidation and Basis of Presentation The Consolidated Financial Statements include the accounts of the parent and its consolidated subsidiaries, of which it is deemed to possess control, after eliminating intercompany balances and transactions, and include all VIEs in which we are the primary beneficiary. Refer to Note 11 for further details on our VIEs. Other entities in which we have invested and have the ability to exercise significant influence over operating and financial policies of the investee, but upon which we do not possess control, are accounted for using the equity method of accounting within the financial statements and are therefore not consolidated. Our accounting and reporting policies conform to U.S. GAAP and, where applicable, the policies conform to the accounting and reporting guidelines prescribed by bank regulatory authorities. Certain reclassifications have been made to the prior periods’ financial statements and notes to conform to the current period’s presentation. Refer to the section below titled Change in Accounting Principle for further details on our method of accounting for ITCs, and Note 26 for further details on our change in allocation of costs to reportable segments and change in reportable segments. Additionally, certain other reclassifications may have been made to the prior periods’ financial statements and notes to conform to the current period’s presentation, which did not have a material impact on our Consolidated Financial Statements. We operate our international subsidiaries in a similar manner as we operate in the United States of America (U.S. or United States), subject to local laws or other circumstances that may cause us to modify our procedures accordingly. The financial statements of subsidiaries that operate outside of the United States generally are measured using the local currency as the functional currency. Use of Estimates and Assumptions The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the related disclosure, including those of contingent assets and liabilities at the date of the financial statements. It also includes estimates related to the income and expenses during the reporting period and the related disclosures. In developing the estimates and assumptions, management uses all available evidence; however, actual results could differ because of uncertainties associated with estimating the amounts, timing, and likelihood of possible outcomes. Our most significant estimates pertain to the allowance for loan losses, the valuations of automotive operating lease assets and residuals, the fair value of financial instruments, and the determination of the provision for income taxes. Significant Accounting Policies Cash and Cash Equivalents Cash and cash equivalents include cash on hand, cash on deposit at other financial institutions, cash items in process of collection, and certain highly liquid investments with original maturities of three months or less from the date of purchase. The book value of cash equivalents approximates fair value because of the short maturities of these instruments and the insignificant risk they present to changes in value with respect to changes in interest rates. We may hold securities with original maturities of three months or less from the date of purchase that are held as part of a longer-term investment strategy and classify them as investment securities. We also hold cash and cash equivalents with legal restrictions limiting our ability to withdraw and use the funds. This includes restricted cash held for securitization trusts and restricted cash and cash equivalents, which are presented as other assets on our Consolidated Balance Sheet. Investment Securities Our investment securities portfolio includes various debt securities. Debt securities are classified based on management’s intent to sell or hold the security. We classify debt securities as held-to-maturity only when we have both the intent and ability to hold the securities to maturity. We classify debt securities as trading when the securities are acquired for the purpose of selling or holding them for a short period of time. Debt securities not classified as either held-to-maturity or trading are classified as available-for-sale. Available-for-sale securities are carried at fair value with unrealized gains and losses included in accumulated other comprehensive income, while our held-to-maturity securities are carried at amortized cost. We establish an allowance for credit losses for lifetime expected credit losses on our held-to-maturity securities, as necessary. The estimate of expected credit losses considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. Accrued interest receivable on held-to-maturity securities is excluded from the estimate of credit losses. Our held-to-maturity securities portfolio is mostly composed of U.S. government (issued by U.S. government entities or agencies) and non-agency mortgage-backed residential debt securities. U.S. government securities are either explicitly or implicitly guaranteed by the U.S. government, are highly rated by major ratings agencies, and have a long history of zero credit losses and therefore generally do not require an allowance for credit losses. We regularly assess our available-for-sale securities for impairment. When the amortized cost basis of an available-for-sale security exceeds its fair value, the security is impaired. If we determine that we intend to sell, or it is more likely than not that we will be required to sell the security before recovery of the amortized cost basis, any previously recorded allowance for credit losses is written off and the security’s amortized cost basis is written down to fair value at the reporting date, with any incremental impairment recorded through earnings. Alternatively, if we do not intend to sell, or it is not more likely than not that we will be required to sell the security before anticipated recovery of the amortized cost basis, we evaluate, among other factors, the magnitude of the decline in fair value, the financial health of and business outlook for the issuer, and the performance of the underlying assets for interests in securitized assets to determine if a credit loss has occurred. The present value of expected future cash flows are compared to the security’s amortized cost basis to measure the credit loss component of the impairment after determining a credit loss has occurred. If the present value of expected cash flows is less than the amortized cost basis, we record an allowance for credit losses for that difference. The amount of credit loss is limited to the difference between the security’s amortized cost basis and its fair value. Accrued interest receivable on available-for-sale securities is excluded from the estimate of credit losses. Any remaining impairment that is due to factors other than a credit loss, such as changes in market interest rates, is recorded in other comprehensive income. Changes in the allowance for credit losses are recorded as provision for, or reversal of, provision for credit losses. Premiums and discounts on debt securities are generally amortized over the stated maturity of the security as an adjustment to investment yield. Premiums on debt securities that have non-contingent call features that are callable at fixed prices on preset dates are amortized to the earliest call date as an adjustment to investment yield. A debt security is generally placed on nonaccrual status at the time any principal or interest payments become 90 days past due. The receivable for interest income that is accrued but not collected is reversed against interest income when the debt security is placed on nonaccrual status. Realized gains and losses on the sale of debt securities are determined using the specific identification method and are reported in other gain (loss) on investments, net in our Consolidated Statement of Income. Equity Securities and Nonmarketable Equity Investments Equity securities that have a readily determinable fair value are recorded at fair value with changes in fair value recorded in earnings and reported in other gain (loss) on investments, net in our Consolidated Statement of Income. These investments are included in equity securities on our Consolidated Balance Sheet. In some instances, we may account for equity securities using the net asset value practical expedient to estimate fair value. Realized gains and losses on the sale of equity securities with a readily determinable fair value and equity securities measured using the net asset value practical expedient are determined using the specific identification method and are reported in other gain (loss) on investments, net in our Consolidated Statement of Income. Refer to Note 24 for further information on equity securities that are held at fair value. Our nonmarketable equity investments include investments in FHLB and FRB stock held to meet regulatory requirements and other equity investments that do not have a readily determinable fair value. Our investments in FHLB and FRB stock are carried at cost, less impairment, if any. Our remaining nonmarketable equity investments are recorded at cost, less impairment and adjusted for observable price changes under the measurement alternative provided under U.S. GAAP. These investments, along with our investments in FHLB and FRB stock, are included in nonmarketable equity investments in other assets on our Consolidated Balance Sheet. Investments recorded under the measurement alternative are also reviewed at each reporting period to determine if any adjustments are required for observable price changes in identical or similar securities of the same issuer. As conditions warrant, we review these investments, as well as investments in FHLB and FRB stock, for impairment and adjust the carrying value of the investment if it is deemed to be impaired. Adjustments related to observable price changes or impairment on securities using the measurement alternative and FHLB and FRB stock are recorded in earnings and reported in other income, net of losses in our Consolidated Statement of Income. Realized gains and losses on the sale of nonmarketable equity investments are also recorded in earnings and reported in other income, net of losses in our Consolidated Statement of Income. Finance Receivables and Loans We initially classify finance receivables and loans as either loans held-for-sale or loans held-for-investment based on management’s assessment of our intent and ability to hold the loans for the foreseeable future or until maturity. Management’s view of the foreseeable future is based on the longest reliable forecasted period, including events known when performing periodic evaluations. Management’s intent and ability with respect to certain loans may change from time to time depending on a number of factors, for example, economic, liquidity, and capital conditions. In order to reclassify loans to held-for-sale, management must have the intent to sell the loans and must reasonably identify the specific loans to be sold. Loans classified as held-for-sale are presented as loans held-for-sale, net on our Consolidated Balance Sheet and are carried at the lower of their net carrying value or fair value, unless the fair value option was elected, in which case those loans are carried at fair value. For loans originated as held-for-sale for which we have not elected the fair value option, loan origination fees and costs are included in the initial carrying value. For held-for-sale loans for which we have elected the fair value option, loan origination fees and costs are recognized in earnings when earned or incurred. We have elected the fair value option for mortgage direct-to-consumer originations for which we have a commitment to sell. The interest rate lock commitment that we enter into for a mortgage loan originated as held-for-sale and certain forward commitments are considered derivatives, which are carried at fair value on our Consolidated Balance Sheet. We have elected the fair value option to measure our nonderivative forward commitments. Changes in the fair value of our interest rate lock commitments, derivative forward commitments, and nonderivative forward commitments related to mortgage loans originated as held-for-sale, as well as changes in the carrying value of loans classified as held-for-sale, are reported through gain on mortgage and automotive loans, net in our Consolidated Statement of Income. Interest income on our loans classified as held-for-sale is recognized based upon the contractual rate of interest on the loan and the unpaid principal balance. We report accrued interest receivable on our loans classified as held-for-sale in other assets on our Consolidated Balance Sheet. Loans classified as held-for-investment are presented as finance receivables and loans, net on our Consolidated Balance Sheet. Finance receivables and loans are reported at their amortized cost basis, which includes the principal amount outstanding, net of unamortized deferred fees and costs on originated loans, unamortized premiums and discounts on purchased loans, unamortized basis adjustments arising from the designation of finance receivables and loans as the hedged item in qualifying fair value hedge relationships, and cumulative principal net charge-offs. We refer to the amortized cost basis less the allowance for loan losses as the net carrying value in finance receivables and loans. Unearned rate support received from automotive manufacturers on certain automotive loans, deferred origination fees and costs, and premiums and discounts on purchased loans, are amortized over the contractual life of the related finance receivable or loan using the effective interest method. We make various incentive payments for consumer automotive loan originations to automotive dealers and account for these payments as direct loan origination costs. Additionally, we make incentive payments to certain commercial automobile wholesale borrowers and account for these payments as a reduction to interest income in the period they are earned. Interest income on our finance receivables and loans is recognized based on the contractual rate of interest plus the amortization of deferred amounts using the effective interest method, except for origination fees and costs on our credit card loans, which amortize on a straight line basis over a twelve-month period. In addition, annual fees on credit cards are amortized into other income, net of losses over a twelve-month period. We report accrued interest receivable on our finance receivables and loans in other assets on our Consolidated Balance Sheet, except for billed interest on our credit card loans, which is included in finance receivables and loans, net. Loan commitment fees are generally deferred and amortized over the commitment period. For information on finance receivables and loans, refer to Note 9. We have elected to exclude accrued interest receivable from the measurement of our allowance for loan losses for each class of financing receivables, except for billed interest on our credit card loans, which is included in finance receivables and loans, net. We have also elected to write-off accrued interest receivable by reversing interest income when loans are placed on nonaccrual status for each class of finance receivable. This includes the reversal of the billed interest on credit card loans that occurs at the time of charge-off, which is initially included in the measurement of our allowance for loan losses. Our portfolio segments are based on the level at which we develop and document our methodology for determining the allowance for loan losses. Additionally, the classes of finance receivables are based on several factors, including the method for monitoring and assessing credit risk, the method of measuring carrying value, and the risk characteristics of the finance receivable. Based on an evaluation of our process for developing the allowance for loan losses, including the nature and extent of exposure to credit risk arising from finance receivables, we have determined our portfolio segments to be consumer automotive, consumer mortgage, consumer other, and commercial. • Consumer automotive — Consists of retail automotive financing for new and used vehicles. • Consumer mortgage — Consists of consumer first-lien mortgages, subordinate-lien mortgages, and home equity mortgages. • Consumer other — Consists of the following classes of finance receivables. • Personal Lending — Consists of unsecured consumer lending from point-of-sale financing. On March 1, 2024, we closed the sale of our point-of-sale financing business. Refer to Note 2 for further information. • Credit Card — Consists of consumer credit card loans. • Commercial — Consists of the following classes of finance receivables. ◦ Commercial and Industrial ▪ Automotive — Consists of financing operations to fund dealer purchases of new and used vehicles through wholesale floorplan financing. Additional commercial offerings include automotive dealer term loans, revolving lines, and dealer fleet financing. ▪ Other — Consists primarily of senior secured asset-based and leveraged cash flow loans related to our corporate-finance business. ◦ Commercial Real Estate — Consists of term loans primarily secured by dealership land and buildings, and other commercial lending secured by real estate. Nonaccrual Loans Generally, we recognize loans of all classes as past due when they are 30 days delinquent on making a contractually required payment, and loans are placed on nonaccrual status when principal or interest has been delinquent for at least 90 days, or when full collection is not expected. Interest income recognition is suspended when finance receivables and loans are placed on nonaccrual status. Additionally, amortization of premiums and discounts and deferred fees and costs ceases when finance receivables and loans are placed on nonaccrual. Exceptions include commercial real estate loans that are placed on nonaccrual status when delinquent for 60 days or when full collection is not probable, if sooner. Additionally, a loan can be returned to accrual status when the loan has been brought fully current, the collection of contractual principal and interest is reasonably assured, and six consecutive months of repayment performance is achieved. In certain cases, if a borrower has been current up to the time of a modification and repayment of the debt subsequent to the modification is reasonably assured, we may choose to continue to accrue interest on the loan. Nonperforming loans on nonaccrual status are reported in Note 9. For all our portfolio segments, the receivable for interest income that is accrued, but not collected, at the date finance receivables and loans are placed on nonaccrual status is reversed against interest income and subsequently recognized only to the extent it is received in cash or until it qualifies for return to accrual status. However, for credit card loans, billed interest is included in the receivables balance and therefore is not reversed against interest income until the loan is charged-off. Where there is doubt regarding the ultimate collectability of loan principal, all cash received is applied to reduce the carrying value of such loans. Generally, finance receivables and loans are restored to accrual status only when contractually current and the collection of future payments is reasonably assured. Modifications of Loans with Borrowers Experiencing Financial Difficulty On January 1, 2023, we implemented ASU 2022-02, Financial Instruments — Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures . This guidance eliminates the concept of TDRs and adds new disclosure requirements related to loan modifications and gross charge offs. We implemented the ASU on a prospective basis. We may provide a modification to a borrower who is experiencing financial difficulty if we believe they have the ability and are willing to repay their loan. The type of modification granted will vary depending on our credit risk management practices, as well as the borrower’s financial condition and the characteristics of the loan, including the unpaid balance, the underlying collateral, and the number or types of previous modifications granted. Modifications that we make subject to the financial difficulty disclosure requirements include payment extensions, principal forgiveness, and/or interest rate concessions. These modifications generally reduce the borrower’s periodic payment amount. The following is a description of each of these types of modifications. • Payment extensions — Payment extensions include both payment deferrals and contractual maturity extensions. Deferral arrangements allow borrowers to delay a scheduled loan payment to a later date. Deferred loan payments do not affect the original contractual terms of the loan and the contractual maturity date of the loan remains unchanged. Deferrals also include certain forbearance agreements. Within the commercial loan portfolio, deferrals primarily reflect a deferral of interest payments. Under a contractual maturity extension agreement, the last payment date is extended to a future date, contractually lengthening the remaining term of the original loan. • Principal forgiveness — Under principal forgiveness, the outstanding principal balance of a loan is reduced by a specified amount. Principal forgiveness may occur voluntarily as part of a negotiated agreement with a borrower, or involuntarily through a bankruptcy proceeding. Under these involuntary instances, the bankruptcy court in a Chapter 11 or 13 proceeding may order us to reduce the outstanding principal balance of the loan to a specified amount. • Interest rate concessions — Interest rate concessions adjust the contractual interest rate of the loan to a rate that is not consistent with a market rate for a customer with similar credit risk. • Combination — Combination includes loans that have undergone multiple of the above loan modification types. This primarily includes rewritten loans where we grant an interest rate concession and a contractual maturity extension. Significant judgment is required to determine if a borrower is experiencing financial difficulty. These considerations vary by portfolio class. In all cases, the cumulative impacts of all modifications made within the 12-month period before the current modification are considered at the time of the most recent modification. For consumer loans of all classes, various qualitative factors are used for assessing the financial difficulty of the borrower. These factors include, but are not limited to, the borrower’s default status on any of its debts, bankruptcy, and recent changes in financial circumstances (for instance, loss of employment). For commercial loans of all classes, similar qualitative factors are considered when assessing the financial difficulty of the borrower. In addition to the previously noted factors, consideration is also given to the borrower’s forecasted ability to service the debt in accordance with the contractual terms, possible regulatory actions, and other potential business disruptions (for example, the loss of a significant customer or other revenue stream). In our consumer automotive portfolio class of loans, we also provide extensions or deferrals of payments to borrowers whom we deem to be experiencing only temporary financial difficulty. In these cases, there are limits within our operational policies to minimize the number of times a loan can be extended, as well as limits to the length of each extension, including a cumulative cap over the life of the loan. If these limits are breached, the modification may require disclosure as noted in the following paragraph. Before offering an extension or deferral, we evaluate the capacity of the customer to make the scheduled payments after the deferral period. During the deferral period, we continue to accrue interest on the loan as part of the deferral agreement. We grant these extensions or deferrals when we expect to collect all amounts due including interest accrued at the original contract rate. We do not disclose modifications that result in only an insignificant payment delay. In order to assess whether a payment delay is insignificant, we consider the amount of the modified payments subject to delay in conjunction with the unpaid principal balance or the collateral value of the loan, whether or not the delay is significant with respect to the frequency of payments under the original contract, or the loan’s original expected duration. In the cases where payment extensions cumulatively extend beyond 90 days and are more than 10% of the original contractual term, or where the cumulative payment extension within the 12-month period immediately preceding the current modification is beyond 180 days, we deem the delay in payment to be more than insignificant. The financial impacts of modifications that meet the definition of a modification to borrowers experiencing financial difficulty are reported in the period in which they are identified. Additionally, if such a loan defaults within 12 months of the modification, we are required to disclose the instances of redefault. A loan is considered to have redefaulted when the loan meets the requirements for evaluation under our charge-off policy, except for commercial loans where redefault is defined as 90 days past due. Net Charge-offs We disclose the measurement of net charge-offs as the amount of gross charge-offs recognized less recoveries received. Gross charge-offs reflect the amount of the amortized cost basis directly written-off. Generally, we recognize recoveries when they are received and record them as an increase to the allowance for loan losses. As a general rule, consumer automotive loans are fully charged off once a loan becomes 120 days past due. In instances where upon becoming 120 days past due repossession is assured and in process, consumer automotive loans are written down to estimated collateral value, less costs to sell. In our consumer mortgage portfolio segment, first-lien mortgages and a subset of our home equity portfolio that are secured by real estate in a first-lien position are written down to the estimated fair value of the collateral, less costs to sell, once a mortgage loan becomes 180 days past due. Consumer mortgage loans that represent second-lien positions are charged off at 180 days past due. In our consumer other segment, loans in our credit card class of receivables are charged off at 180 days past due. Prior to being transferred to held-for-sale on December 31, 2023, loans within our personal lending class of receivables were charged off at 120 days past due. Within 60 days of receipt of notification of filing from the bankruptcy court, or within the time frames noted above, consumer automotive and first-lien consumer mortgage loans in bankruptcy are written down to their expected future cash flows, which is generally fair value of the collateral, less costs to sell, and second-lien consumer mortgage loans and other consumer loans are fully charged-off, unless it can be clearly demonstrated that repayment is likely to occur. Regardless of other timelines noted within this policy, loans are considered collateral dependent when the borrower is experiencing financial difficulty and repayment of the loan is expected to only be through sale or operation of the collateral. Collateral dependent loans are charged-off to the estimated fair value of the underlying collateral, less costs to sell when foreclosure or repossession proceedings begin. Commercial loans are individually evaluated and are written down to the estimated fair value of the collateral less costs to sell when collectability of the recorded balance is in doubt. Generally, all commercial loans are charged-off when it becomes unlikely that the borrower is willing or able to repay the remaining balance of the loan and any underlying collateral is not sufficient to recover the outstanding principal. Collateral dependent loans are charged-off to the fair market value of collateral less costs to sell when appropriate. Non-collateral dependent loans are fully charged-off. Allowance for Loan Losses The allowance for loan losses (the allowance) is deducted from, or added to, the loan’s amortized cost basis to present the net amount expected to be collected from our lending portfolios. We estimate the allowance using relevant available information, which includes both internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Additions and reductions to the allowance are charged to current period earnings through the provision for credit losses and amounts determined to be uncollectible are charged directly against the allowance, net of amounts recovered on previously charged-off accounts. Expected recoveries do not exceed the total of amounts previously charged-off and amounts expected to be charged-off. Expected credit losses are estimated over the contractual term of the loans, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions or renewals, unless the extension or renewal option is included in the original or modified contract at the reporting date and we are not able to unconditionally cancel the option. Expected loan modifications are also not included in the contractual term, unless we have a reasonable expectation at period end that the loan modification will be executed with a borrower. For the purpose of calculating portfolio-level reserves, we have grouped our loans into four portfolio segments: consumer automotive, consumer mortgage, consumer other, and commercial. The allowance is measured on a collective basis using statistical models when loans have similar risk characteristics. These statistical models are designed to correlate certain macroeconomic variables to expected future credit losses. The macroeconomic data used in the models are based on forecasted factors over a reasonable and supportable forecast period. These forecasted variables are derived from both internal and external sources. Beyond this forecasted period, we revert each variable to a historical average on a straight-line basis. The historical average is calculated predominantly using historical data beginning in January 2008 through the most recent period of available data. During the second quarter of 2024, we updated our reasonable and supportable forecast period from 12 months to 24 months, and our reversion period from 24 months to 12 months. This refinement to our estimation process represented a change in accounting estimate, with prospective application beginning in the period of change. The impact of this refinement to our estimation process was offset by an adjustment in the qualitative portion of our allowance. The use of a longer-duration reasonable and supportable macroeconomic forecast period to produce the modeled portion of our allowance for loan losses is expected to further improve model performance. Loans that do not share similar risk characteristics are evaluated on an individual basis and are not included in the collective evaluation. The allowance calculation is supplemented with qualitative adjustments that take into consideration current portfolio and asset-level factors, such as the impacts of changes in underwriting standards, collections and account management effectiveness, geographic concentr

Held-for-sale Operations

Held-for-sale Operations	12 Months Ended
	Dec. 31, 2024
Discontinued Operations and Disposal Groups [Abstract]
Held-for-sale Operations	Held-for-sale Operations On December 31, 2023, we committed to sell Ally Lending, a component of our Corporate and Other segment. We closed the sale of Ally Lending on March 1, 2024. For all periods presented, the operating results for our held-for-sale operations are presented within continuing operations in the Consolidated Statement of Income. Additionally, the assets and liabilities of our held-for-sale operations are presented separately on the Consolidated Balance Sheet as of December 31, 2023. In connection with the classification of the operations as held-for-sale, the disposal group was measured at lower-of-cost or fair value. First, the finance receivables and loans were classified as held-for-sale and measured at the lower-of-cost or fair value, which resulted in a benefit of $16 million to our provision for credit losses during the year ended December 31, 2023. Next, the remaining assets and liabilities of the disposal group were measured at the lower-of-cost or fair value. The fair value was determined based on the sales agreement with the third-party purchaser, which is a Level 2 fair value input. The carrying value exceeded the fair value of the assets and liabilities of the disposal group, which resulted in a goodwill impairment charge of $149 million during the year ended December 31, 2023. In total, we recognized a net pretax loss of $133 million for the year ended December 31, 2023, in connection with classification of the operations as held-for-sale. During the year ended December 31, 2024, we recognized an additional pretax loss of $8 million in connection with the sale of Ally Lending, and do not expect to recognize any significant incremental losses related to this transaction. The assets and liabilities of operations held-for-sale are summarized below. December 31, ($ in millions) 2023 Assets Loans held-for-sale, net $ 1,940 Other assets (a) 35 Total assets $ 1,975 Liabilities Accrued expenses and other liabilities (b) $ 17 Total liabilities $ 17 (a) Primarily includes accrued interest and fees of $25 million, goodwill of $4 million, and property and equipment of $4 million at December 31, 2023. (b) Includes $5 million for reserves for unfunded lending commitments at December 31, 2023. Nonrecurring Fair Value The following table displays assets and liabilities of our held-for-sale operations measured at fair value on a nonrecurring basis and held at December 31, 2023. The disposal group was sold on March 1, 2024. Refer to Note 24 for descriptions of valuation methodologies used to measure material assets at fair value and details of the valuation models, key inputs to these models, and significant assumptions used. Nonrecurring fair value measurements Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments Total gain (loss) included in earnings December 31, 2023 ($ in millions) Level 1 Level 2 Level 3 Total Assets Loans held-for-sale, net $ — $ 1,940 $ — $ 1,940 $ — n/m (a) Other assets (b) — 35 — 35 (149) n/m (a) Total assets $ — $ 1,975 $ — $ 1,975 $ (149) n/m Liabilities Accrued expenses and other liabilities $ — $ 17 $ — $ 17 $ — n/m (a) Total liabilities $ — $ 17 $ — $ 17 $ — n/m n/m = not meaningful (a) We consider the applicable valuation allowance, allowance for loan losses, or cumulative adjustments to be the most relevant indicator of the impact on earnings caused by the fair value measurement. Accordingly, the table above excludes total gains and losses included in earnings for these items. (b) Includes a $149 million impairment of goodwill at Ally Lending. At the time of impairment, the fair value of goodwill at Ally Lending was classified as Level 2 under the fair value hierarchy.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	12 Months Ended
	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Revenue from Contracts with Customers Our primary revenue sources, which include financing revenue and other interest income, are addressed by other U.S. GAAP topics and are not in the scope of ASC Topic 606, Revenue from Contracts with Customers. As part of our Insurance operations, we recognize revenue from insurance contracts, which are addressed by other U.S. GAAP topics and are not included in the scope of this standard. Certain noninsurance contracts within our Insurance operations, including VSCs, GAP contracts, and VMCs, are included in the scope of this standard. All revenue associated with noninsurance contracts is recognized over the contract term on a basis proportionate to the anticipated cost emergence. Further, commissions and sales expense incurred to obtain these contracts are amortized over the terms of the related policies and service contracts on the same basis as premiums and service revenue are earned, and all advertising costs are recognized as expense when incurred. The following is a description of our primary revenue sources that are derived from contracts with customers. Revenue from contracts with customers is recognized when control of the promised goods or services is transferred to our customers, and in an amount that reflects the consideration that we expect to receive in exchange for those goods or services. For information regarding our revenue recognition policies outside the scope of the revenue recognition principles of ASC Topic 606, Revenue from Contracts with Customers , refer to Note 1. • Noninsurance contracts — We sell VSCs that offer owners mechanical repair protection and roadside assistance for new and used vehicles beyond the manufacturer’s new vehicle limited warranty. We sell GAP contracts that protect the customer against having to pay certain amounts to a lender above the fair market value of their vehicle if the vehicle is damaged and declared a total loss or stolen. We also sell VMCs that provide coverage for certain agreed-upon services, such as oil changes and tire rotations, over the coverage period. We receive payment in full at the inception of each of these contracts. Our performance obligation for these contracts is satisfied over the term of the contract and we recognize revenue over the contract term on a basis proportionate to the anticipated incurrence of costs, as we believe this is the most appropriate method to measure progress towards satisfaction of the performance obligation. This revenue is recorded within insurance premiums and service revenue earned in our Consolidated Statement of Income, while associated cancellation and transfer fees are recorded as other income. • Sale of off-lease vehicles — When a customer’s vehicle lease matures, the customer generally has the option of purchasing or returning the vehicle. If the vehicle is returned to us, we obtain possession with the intent to sell through SmartAuction—our online auction platform, our dealer channel, or through various other physical auctions. Our performance obligation is satisfied and the remarketing gain or loss is recognized when control of the vehicle has passed to the buyer, which coincides with the sale date. Our actual sales proceeds from remarketing the vehicle may be higher or lower than the estimated residual value, after adjusting for any residual value guarantees, resulting in a gain or loss on remarketing recorded through depreciation expense on operating lease assets in our Consolidated Statement of Income. • Remarketing fee income — In addition to using SmartAuction as a remarketing channel for our returned lease vehicles, we maintain the SmartAuction internet auction site and administer the auction process for third-party use. We earn a service fee from dealers for every third-party vehicle sold through SmartAuction. Our performance obligation is to provide the online marketplace for used vehicle transactions to be consummated. This obligation is satisfied and revenue is recognized when control of the vehicle has passed to the buyer, which coincides with the sale date. This revenue is recorded as remarketing fees within other income in our Consolidated Statement of Income. • Brokerage commissions and other revenues through Ally Invest — We charge fees to customers related to their use of certain services on our Ally Invest digital advisory and online brokerage platform. These fees include commissions on low-priced securities, option contracts, certain other security types, account service fees, account management fees on professional portfolio management services, and other ancillary fees. Commissions on customer-directed trades and account service fees are based on published fee schedules and are generated from a customer option to purchase the services offered under the contract. These options do not represent a material right and are only considered a contract when the customer executes their option to purchase these services. Based on this, the term of the contract does not extend beyond the services provided, and accordingly revenue is recognized upon the completion of our performance obligation, which we view as the successful execution of the trade or service. Revenue on professional portfolio management services is calculated monthly based upon a fixed percentage of the client’s assets under management. Due to the fact that this revenue stream is composed of variable consideration that is based on factors outside of our control, we have deemed this revenue as constrained and we are unable to estimate the initial transaction price at the inception of the contract. We have elected to use the practical expedient under U.S. GAAP to recognize revenue monthly based on the amount we are able to invoice the customer. Additionally, we earn revenue when we route customers’ orders to market makers, who then execute customers’ trades. The market makers compensate us for the right to fill the customers’ orders. We also earn revenue from a fee-sharing agreement with our clearing broker related to the interest fee income the clearing broker earns on customer cash balances, securities lending, and margin loans made to our customers. We concluded the initial transaction price is exclusively variable consideration and, based on the nature of our performance obligation to allow the clearing broker to collect interest fee income from cash deposits and customer loans from our customers, we are unable to determine the amount of revenue to be recognized until the total customer cash balance or the total interest income recognized on margin loans has been determined, which occurs monthly. These revenue streams are recorded as other income in our Consolidated Statement of Income. • Brokered/agent commissions through Insurance operations — We have agreements with third parties to offer various vehicle protection products to consumers. We also have agreements with third-party insurers to offer various insurance coverages to dealers. Our performance obligation for these arrangements is satisfied when a customer or dealer has purchased a vehicle protection product or an insurance policy through the third-party provider. In determining the initial transaction price for these agreements, we noted that revenue on brokered/agent commissions is based on the volume of vehicle protection product contracts sold or a percentage of insurance premium written, which is not known to us at the inception of the agreements with these third-party providers. We concluded the initial transaction price is exclusively variable consideration and, based on the nature of the performance obligation, we are unable to determine the amount of revenue we will record until the customer purchases a vehicle protection product or a dealer purchases an insurance policy from the third-party provider. Once we are notified of vehicle protection product sales or insurance policies issued by the third-party providers, we record the commission earned as insurance premiums and service revenues earned in our Consolidated Statement of Income. • Banking fees and interchange income — We charge depositors various account service fees including those for outgoing wires, excessive transactions, stop payments, and returned deposits. These fees are generated from a customer option to purchase services offered under the contract. These options do not represent a material right and are only considered a contract in accordance with the revenue recognition principles when the customer exercises their option to purchase these account services. Based on this, the term for our contracts with customers is considered day-to-day, and the contract does not extend beyond the services already provided. Revenue derived from deposit account fees is recorded at the point in time we perform the requested service, and is recorded as other income in our Consolidated Statement of Income. As a debit and credit card issuer, we also generate interchange fee income from merchants during debit and credit card transactions and incur certain corresponding charges from merchant card networks. For debit card transactions, our performance obligation is satisfied when we have initiated the payment of funds from a customer’s account to a merchant through our contractual agreements with the merchant card networks. For credit card transactions, our performance obligation is satisfied at the time each transaction is captured for settlement with the interchange networks. Interchange fees are reported net of processing fees and customer rewards as other income in our Consolidated Statement of Income. • Other revenue — Other revenue primarily includes service revenue related to various account management functions and fee income derived from third-party lenders arranged through our online automotive lender exchange. These revenue streams are recorded as other income in our Consolidated Statement of Income. The following table presents a disaggregated view of our revenue from contracts with customers included in other revenue that falls within the scope of the revenue recognition principles of ASC Topic 606, Revenue from Contracts with Customers . Year ended December 31, ($ in millions) Automotive Finance operations Insurance operations Corporate Finance operations Corporate and Other Consolidated 2024 Revenue from contracts with customers Noninsurance contracts (a) (b) (c) $ — $ 909 $ — $ — $ 909 Remarketing fee income 112 — — — 112 Brokerage commissions and other revenue — — — 88 88 Banking fees and interchange income (d) — — — 47 47 Brokered/agent commissions — 20 — — 20 Other 19 3 — — 22 Total revenue from contracts with customers 131 932 — 135 1,198 All other revenue 232 575 123 39 969 Total other revenue (e) $ 363 $ 1,507 $ 123 $ 174 $ 2,167 2023 Revenue from contracts with customers Noninsurance contracts (a) (b) (c) $ — $ 686 $ — $ — $ 686 Remarketing fee income 117 — — — 117 Brokerage commissions and other revenue — — — 89 89 Banking fees and interchange income (d) — — — 44 44 Brokered/agent commissions — 13 — — 13 Other 18 1 — — 19 Total revenue from contracts with customers 135 700 — 133 968 All other revenue 186 728 104 27 1,045 Total other revenue (e) $ 321 $ 1,428 $ 104 $ 160 $ 2,013 2022 Revenue from contracts with customers Noninsurance contracts (a) (b) (c) $ — $ 655 $ — $ — $ 655 Remarketing fee income 107 — — — 107 Brokerage commissions and other revenue — — — 64 64 Banking fees and interchange income (d) — — — 44 44 Brokered/agent commissions — 14 — — 14 Other 20 — — 4 24 Total revenue from contracts with customers 127 669 — 112 908 All other revenue 179 354 122 15 670 Total other revenue (e) $ 306 $ 1,023 $ 122 $ 127 $ 1,578 (a) We had opening balances of $3.0 billion at both January 1, 2024 and 2023, and $3.1 billion at January 1, 2022 in unearned revenue associated with outstanding contracts and $973 million, $973 million and $939 million of these balances were recognized as insurance premiums and service revenue earned in our Consolidated Statement of Income during the years ended December 31, 2024, 2023, and 2022, respectively. (b) At December 31, 2024, we had unearned revenue of $3.0 billion associated with outstanding contracts, and with respect to this balance we expect to recognize revenue of $849 million in 2025, $706 million in 2026, $555 million in 2027, $394 million in 2028, and $452 million thereafter. We had unearned revenue of $3.0 billion associated with outstanding contracts at both December 31, 2023, and 2022. (c) We had deferred insurance assets of $1.8 billion at December 31, 2024, 2023, and 2022. We recognized $577 million, $580 million, and $564 million of expense during the years ended December 31, 2024, 2023, and 2022, respectively. (d) Interchange income is reported net of customer rewards. Customer rewards expense was $28 million, $20 million, and $14 million for the years ended December 31, 2024, 2023, and 2022, respectively. (e) Represents a component of total net revenue. Refer to Note 26 for further information on our reportable operating segments. In addition to the components of other revenue presented above, as part of our Automotive Finance operations, we recognized net remarketing gains of $132 million, $211 million, and $170 million for the years ended December 31, 2024 , 2023, and 2022 , respectively, on the sale of off-lease vehicles. These gains are included in depreciation expense on operating lease assets in our Consolidated Statement of Income. Refer to Note 10 for additional information.

Insurance Premiums and Service

Insurance Premiums and Service Revenue	12 Months Ended
	Dec. 31, 2024
Insurance Premiums and Service Revenue [Abstract]
Insurance Premiums and Service Revenue Disclosure	Insurance Premiums and Service Revenue The following table is a summary of insurance premiums and service revenue written and earned. 2024 2023 2022 Year ended December 31, ($ in millions) Written Earned Written Earned Written Earned Insurance premiums Direct $ 622 $ 564 $ 476 $ 446 $ 388 $ 379 Assumed 122 113 93 68 42 29 Gross insurance premiums 744 677 569 514 430 408 Ceded (275) (258) (265) (238) (216) (211) Net insurance premiums 469 419 304 276 214 197 Service revenue 1,003 994 971 995 889 954 Insurance premiums and service revenue written and earned $ 1,472 $ 1,413 $ 1,275 $ 1,271 $ 1,103 $ 1,151

Other Income, Net of Losses

Other Income, Net of Losses	12 Months Ended
	Dec. 31, 2024
Other Nonoperating Income (Expense) [Abstract]
Other Income, Net of Losses	Other Income, Net of Losses Details of other income, net of losses, were as follows. Year ended December 31, ($ in millions) 2024 2023 2022 Late charges and other administrative fees $ 197 $ 198 $ 162 Remarketing fees 112 117 107 Income from equity-method investments (a) 20 4 102 Loss on nonmarketable equity investments, net (a) (6) (10) (132) Other, net 335 273 256 Total other income, net of losses $ 658 $ 582 $ 495 (a) Refer to Note 13 for further information on our equity-method investments and nonmarketable equity investments.

Reserves for Insurance Losses a

Reserves for Insurance Losses and Loss Adjustment Expenses	12 Months Ended
	Dec. 31, 2024
Short-Duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Reserves for Insurance Losses and Loss Adjustment Expenses	Reserves for Insurance Losses and Loss Adjustment Expenses The following table shows incurred claims and allocated loss adjustment expenses, net of reinsurance. For the years ended December 31, ($ in millions) December 31, 2024 ($ in millions) (unaudited supplementary information) Total of incurred-but-not-reported liabilities plus expected development on reported claims (a) Cumulative number of reported claims (a) Accident year 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2015 $ 274 $ 271 $ 272 $ 272 $ 272 $ 272 $ 272 $ 272 $ 272 $ 272 $ — 342,280 2016 326 327 328 328 328 328 328 328 328 — 476,057 2017 310 314 315 315 315 315 315 315 — 481,750 2018 271 272 272 273 273 272 273 — 506,454 2019 303 306 305 305 305 305 — 542,361 2020 343 339 339 339 340 — 494,524 2021 243 237 237 237 — 493,714 2022 258 267 269 — 513,434 2023 385 403 7 602,714 2024 488 78 621,826 Total $ 3,230 (a) Claims are reported on a claimant basis in a given accident year. Claimant is defined as one vehicle for GAP products, one repair for VSCs and VMCs, one dealership for dealer inventory products, and per individual/coverage for most other products. The following table shows cumulative paid claims and allocated loss adjustment expenses, net of reinsurance. For the years ended December 31, ($ in millions) (unaudited supplementary information) Accident year 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2015 $ 252 $ 272 $ 272 $ 272 $ 272 $ 272 $ 272 $ 272 $ 272 $ 272 2016 302 327 328 328 328 328 328 328 328 2017 289 315 315 315 315 315 315 315 2018 245 273 273 273 273 272 273 2019 278 306 305 305 305 305 2020 313 339 339 340 340 2021 213 236 237 237 2022 225 260 265 2023 328 387 2024 390 Total 3,112 All outstanding liabilities for loss and allocated loss adjustment expenses before 2015, net of reinsurance 8 Reserves for insurance losses and allocated loss adjustment expenses, net of reinsurance $ 126 The following table shows the average annual percentage payout of incurred claims by age, net of reinsurance. The information presented is unaudited supplementary information. Year 1 2 3 4 5 6 7 8 9 10 Percentage payout of incurred claims 89.7 % 9.9 % 0.3 % — % — % — % 0.1 % — % — % — % The following table shows a reconciliation of the disclosures of incurred and paid claims development to the reserves for insurance losses and loss adjustment expenses. December 31, ($ in millions) 2024 2023 2022 Reserves for insurance losses and loss adjustment expenses, net of reinsurance $ 126 $ 71 $ 44 Total reinsurance recoverable on unpaid claims 60 66 72 Unallocated loss adjustment expenses 3 3 3 Total gross reserves for insurance losses and loss adjustment expenses $ 189 $ 140 $ 119 The following table shows a rollforward of our reserves for insurance losses and loss adjustment expenses. ($ in millions) 2024 2023 2022 Total gross reserves for insurance losses and loss adjustment expenses at January 1, $ 140 $ 119 $ 122 Less: Reinsurance recoverable 66 72 81 Net reserves for insurance losses and loss adjustment expenses at January 1, 74 47 41 Net insurance losses and loss adjustment expenses incurred related to: Current year 521 414 282 Prior years (a) 23 8 (2) Total net insurance losses and loss adjustment expenses incurred 544 422 280 Net insurance losses and loss adjustment expenses paid or payable related to: Current year (420) (354) (246) Prior years (69) (41) (28) Total net insurance losses and loss adjustment expenses paid or payable (489) (395) (274) Net reserves for insurance losses and loss adjustment expenses at December 31, 129 74 47 Plus: Reinsurance recoverable (b) 60 66 72 Total gross reserves for insurance losses and loss adjustment expenses at December 31, (c) $ 189 $ 140 $ 119 (a) There have been no material adverse changes to the reserve for prior years. (b) Included in premiums receivable and other insurance assets on our Consolidated Balance Sheet. (c) Included in accrued expenses and other liabilities on our Consolidated Balance Sheet.

Other Operating Expenses

Other Operating Expenses	12 Months Ended
	Dec. 31, 2024
Operating Expenses [Abstract]
Other Operating Expenses	Other Operating Expenses Details of other operating expenses were as follows. Year ended December 31, ($ in millions) 2024 2023 2022 Insurance commissions $ 647 $ 636 $ 610 Technology and communications 438 436 406 Advertising and marketing 285 308 366 Property and equipment depreciation 224 196 165 Lease and loan administration 181 210 201 Regulatory and licensing fees 180 205 119 Professional services 147 145 173 Vehicle remarketing and repossession 129 116 91 Amortization of intangible assets (a) 19 25 31 Other 425 414 345 Total other operating expenses $ 2,675 $ 2,691 $ 2,507 (a) Refer to Note 1 and Note 13 for further information on our intangible assets.

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities Our investment portfolio includes various debt and equity securities. Our debt securities, which are classified as available-for-sale or held-to-maturity, include government securities, corporate bonds, asset-backed securities, and mortgage-backed securities. The cost, fair value, and gross unrealized gains and losses on available-for-sale and held-to-maturity securities were as follows. 2024 2023 Amortized cost Gross unrealized Fair value Amortized cost Gross unrealized Fair value December 31, ($ in millions) gains losses gains losses Available-for-sale securities Debt securities U.S. Treasury and federal agencies $ 2,073 $ — $ (200) $ 1,873 $ 2,284 $ — $ (209) $ 2,075 U.S. States and political subdivisions 704 — (87) 617 727 1 (70) 658 Foreign government 198 1 (5) 194 190 1 (8) 183 Agency mortgage-backed residential (a) 16,765 — (3,112) 13,653 18,122 1 (2,739) 15,384 Mortgage-backed residential 249 — (43) 206 268 — (43) 225 Agency mortgage-backed commercial (a) 4,819 1 (836) 3,984 4,539 2 (783) 3,758 Asset-backed 131 — (2) 129 344 — (12) 332 Corporate debt 1,871 3 (120) 1,754 1,942 4 (146) 1,800 Total available-for-sale securities (b) (c) (d) (e) (f) $ 26,810 $ 5 $ (4,405) $ 22,410 $ 28,416 $ 9 $ (4,010) $ 24,415 Held-to-maturity securities Debt securities Agency mortgage-backed residential $ 935 $ — $ (196) $ 739 $ 999 $ — $ (173) $ 826 Mortgage-backed residential 3,323 142 — 3,465 3,603 221 — 3,824 Asset-backed retained notes 88 1 — 89 78 1 — 79 Total held-to-maturity securities (d) (f) (g) $ 4,346 $ 143 $ (196) $ 4,293 $ 4,680 $ 222 $ (173) $ 4,729 (a) Fair value includes basis adjustments for securities in closed portfolios with active hedges under the portfolio layer method. This includes a $72 million liability and a $46 million asset for agency mortgage-backed residential securities at December 31, 2024, and December 31, 2023, respectively, and a $34 million liability and a $29 million asset for agency mortgage-backed commercial securities at December 31, 2024, and December 31, 2023, respectively. These basis adjustments would be allocated to the amortized cost of specific securities within the pool if the hedge was dedesignated. Refer to Note 21 for additional information. (b) Certain available-for-sale securities are included in fair value hedging relationships. Refer to Note 21 for additional information. (c) Certain entities related to our Insurance operations are required to deposit securities with state regulatory authorities. These deposited securities totaled $13 million and $12 million at December 31, 2024, and December 31, 2023, respectively. (d) Investment securities with a fair value of $3.4 billion and $4.7 billion were pledged as collateral at December 31, 2024, and December 31, 2023, respectively. This primarily included $2.9 billion and $3.3 billion pledged to secure advances from the FHLB at December 31, 2024, and December 31, 2023, respectively. This also included securities pledged for other purposes as required by contractual obligations or law, under which agreements we granted the counterparty the right to sell or pledge $439 million and $1.4 billion of the underlying available-for-sale securities at December 31, 2024, and December 31, 2023, respectively. (e) Totals do not include accrued interest receivable, which was $73 million and $76 million at December 31, 2024, and December 31, 2023, respectively. Accrued interest receivable is included in other assets (f) There was no allowance for credit losses recorded at both December 31, 2024, or December 31, 2023, as management determined that there were no expected credit losses in our portfolio of available-for-sale and held-to-maturity securities. (g) Totals do not include accrued interest receivable, which was $12 million and $13 million at December 31, 2024, and December 31, 2023, respectively. Accrued interest receivable is included in other assets on our Consolidated Balance Sheet. In the fourth quarter of 2023, non-agency mortgage-backed residential securities with a fair value of $3.6 billion were transferred from available-for-sale to held-to-maturity. At the time of the transfer, $911 million of unrealized losses were retained in accumulated other comprehensive loss on our Consolidated Balance Sheet. The transfer of these securities to held-to-maturity reduces our exposure to fluctuations in accumulated other comprehensive loss on our Consolidated Balance Sheet that can result from unrealized losses on available-for-sale securities due to changes in market interest rates. The unrealized loss at the time of transfer is amortized over the remaining life of the security, offsetting the amortization of the security’s premium or discount, and resulting in no impact to the Consolidated Statement of Income. Refer to Note 18 for additional information. The maturity distribution of debt securities outstanding is summarized in the following tables based upon contractual maturities. Call or prepayment options may cause actual maturities to differ from contractual maturities. Total Due in one year or less Due after one year through five years Due after five years through ten years Due after ten years ($ in millions) Amount Yield Amount Yield Amount Yield Amount Yield Amount Yield December 31, 2024 Fair value of available-for-sale securities (a) U.S. Treasury and federal agencies $ 1,873 1.6 % $ 54 1.0 % $ 1,087 1.5 % $ 732 1.9 % $ — — % U.S. States and political subdivisions 617 3.4 33 6.2 72 3.1 86 4.1 426 3.2 Foreign government 194 2.7 33 2.1 51 2.5 110 2.9 — — Agency mortgage-backed residential (b) 13,653 2.6 — — 7 2.0 23 2.5 13,623 2.6 Mortgage-backed residential 206 2.7 — — — — — — 206 2.7 Agency mortgage-backed commercial (b) 3,984 2.5 23 3.1 339 3.7 1,724 2.5 1,898 2.1 Asset-backed 129 1.5 — — 128 1.5 1 4.0 — — Corporate debt 1,754 3.1 184 3.0 754 2.6 695 3.3 121 5.3 Total available-for-sale securities $ 22,410 2.5 $ 327 2.3 $ 2,438 2.2 $ 3,371 2.6 $ 16,274 2.6 Amortized cost of available-for-sale securities $ 26,810 $ 330 $ 2,579 $ 3,844 $ 20,057 Amortized cost of held-to-maturity securities (c) Agency mortgage-backed residential $ 935 2.7 % $ — — % $ — — % $ — — % $ 935 2.7 % Mortgage-backed residential 3,323 2.8 — — — — 9 3.1 3,314 2.8 Asset-backed retained notes 88 5.4 — — 64 5.3 24 5.6 — — Total held-to-maturity securities $ 4,346 2.9 $ — — $ 64 5.3 $ 33 5.0 $ 4,249 2.8 December 31, 2023 Fair value of available-for-sale securities (a) U.S. Treasury and federal agencies $ 2,075 1.6 % $ 215 0.9 % $ 1,120 1.5 % $ 740 1.9 % $ — — % U.S. States and political subdivisions 658 3.2 4 3.4 55 2.7 110 3.6 489 3.1 Foreign government 183 2.3 20 1.3 82 2.4 81 2.5 — — Agency mortgage-backed residential (b) 15,384 2.6 — — 10 1.9 32 2.5 15,342 2.6 Mortgage-backed residential 225 2.7 — — — — — — 225 2.7 Agency mortgage-backed commercial (b) 3,758 2.3 — — 163 3.8 1,641 2.4 1,954 2.1 Asset-backed 332 1.7 — — 327 1.7 4 3.9 1 2.7 Corporate debt 1,800 2.7 210 2.4 915 2.6 671 2.9 4 6.2 Total available-for-sale securities $ 24,415 2.5 $ 449 1.7 $ 2,672 2.1 $ 3,279 2.4 $ 18,015 2.5 Amortized cost of available-for-sale securities $ 28,416 $ 461 $ 2,844 $ 3,746 $ 21,365 Amortized cost of held-to-maturity securities (c) Agency mortgage-backed residential $ 999 2.8 % $ — — % $ — — % $ — — % $ 999 2.8 % Mortgage-backed residential 3,603 2.8 — — — — 12 3.0 3,591 2.8 Asset-backed retained notes 78 5.6 1 5.6 41 5.6 2 6.0 34 5.6 Total held-to-maturity securities $ 4,680 2.8 $ 1 5.6 $ 41 5.6 $ 14 3.4 $ 4,624 2.8 (a) Yield is calculated using the effective yield of each security at the end of the period, weighted based on the market value by security for the securities within each maturity distribution range. The effective yield considers the contractual coupon and amortized cost inclusive of hedge basis adjustments for dedesignated hedges, and excludes expected capital gains and losses. Yield does not consider hedging effects for securities in active hedges. (b) Fair value includes basis adjustments for securities in closed portfolios with active hedges under the portfolio layer method. This includes a $72 million liability and a $46 million asset for agency mortgage-backed residential securities at December 31, 2024, and December 31, 2023, respectively, and a $34 million liability and a $29 million asset for agency mortgage-backed commercial securities at December 31, 2024, and December 31, 2023, respectively. These basis adjustments would be allocated to the amortized cost of specific securities within the pool if the hedge was dedesignated. Refer to Note 21 for additional information. (c) Yield is calculated using the effective yield of each security at the end of the period, weighted based on amortized cost by security for the securities within each maturity distribution range. The effective yield considers the contractual coupon and amortized cost and excludes capital gains, capital losses, and the premium or discount on securities transferred from available-for-sale to held-to-maturity. The balances of cash equivalents were $106 million and $36 million at December 31, 2024, and December 31, 2023, respectively, and were composed primarily of money-market funds. The following table presents interest and dividends on investment securities. Year ended December 31, ($ in millions) 2024 2023 2022 Taxable interest $ 952 $ 938 $ 765 Taxable dividends 22 20 17 Interest and dividends exempt from U.S. federal income tax 22 22 22 Interest and dividends on investment securities $ 996 $ 980 $ 804 The following table presents gross gains and losses realized upon the sales of available-for-sale securities, and net gains or losses on equity securities held during the period. Year ended December 31, ($ in millions) 2024 2023 2022 Available-for-sale securities Gross realized gains $ 3 $ 5 $ 23 Net realized gain on available-for-sale securities 3 5 23 Net realized gain on equity securities 75 32 72 Net unrealized (loss) gain on equity securities (6) 107 (215) Other gain (loss) on investments, net $ 72 $ 144 $ (120) The following table presents the credit quality of our held-to-maturity securities, based on the latest available information as of December 31, 2024, and December 31, 2023. The credit ratings are sourced from nationally recognized statistical rating organizations, which include S&P, Moody’s, Fitch, and DBRS. The ratings presented are a composite of the ratings sourced from the agencies or, if the ratings cannot be sourced from the agencies, are based on the asset type of the particular security. All our held-to-maturity securities were current in their payment of principal and interest as of both December 31, 2024, and December 31, 2023. We have not recorded any interest income reversals on our held-to-maturity securities during the years ended December 31, 2024, or 2023 . December 31, ($ in millions) AAA AA A BBB Total (a) 2024 Debt securities Agency mortgage-backed residential $ — $ 935 $ — $ — $ 935 Mortgage-backed residential 3,241 78 4 — 3,323 Asset-backed retained notes 81 3 2 2 88 Total held-to-maturity securities $ 3,322 $ 1,016 $ 6 $ 2 $ 4,346 2023 Debt securities Agency mortgage-backed residential $ — $ 999 $ — $ — $ 999 Mortgage-backed residential 3,497 93 13 — 3,603 Asset-backed retained notes 73 2 2 1 78 Total held-to-maturity securities $ 3,570 $ 1,094 $ 15 $ 1 $ 4,680 (a) Rating agencies indicate that they base their ratings on many quantitative and qualitative factors, which may include capital adequacy, liquidity, asset quality, business mix, level and quality of earnings, and the current operating, legislative, and regulatory environment. A credit rating is not a recommendation to buy, sell, or hold securities, and the ratings are subject to revision or withdrawal at any time by the assigning rating agency. The following table summarizes available-for-sale securities in an unrealized loss position, which we evaluated to determine if a credit loss exists requiring the recognition of an allowance for credit losses. For additional information on our methodology, refer to Note 1. As of December 31, 2024, and December 31, 2023, we did not have the intent to sell the available-for-sale securities in an unrealized loss position and we do not believe it is more likely than not that we will be required to sell these securities before recovery of their amortized cost basis. We have not recorded any interest income reversals on our available-for-sale securities during the years ended December 31, 2024, or 2023. 2024 2023 Less than 12 months 12 months or longer Less than 12 months 12 months or longer December 31, ($ in millions) Fair value Unrealized loss Fair value Unrealized loss Fair value Unrealized loss Fair value Unrealized loss Available-for-sale securities Debt securities U.S. Treasury and federal agencies $ — $ — $ 1,873 $ (200) $ — $ — $ 2,075 $ (209) U.S. States and political subdivisions 87 (2) 472 (85) 70 — 501 (70) Foreign government 40 — 112 (5) 16 — 134 (8) Agency mortgage-backed residential (a) 127 (3) 13,518 (3,109) 300 (5) 15,015 (2,734) Mortgage-backed residential — — 206 (43) — — 225 (43) Agency mortgage-backed commercial (a) 428 (11) 3,445 (825) 153 (4) 3,472 (779) Asset-backed — — 124 (2) 18 — 302 (12) Corporate debt 265 (6) 1,319 (114) 33 (1) 1,607 (145) Total available-for-sale securities $ 947 $ (22) $ 21,069 $ (4,383) $ 590 $ (10) $ 23,331 $ (4,000) (a) Includes basis adjustments for certain securities that are included in closed portfolios with active hedges under the portfolio layer method at December 31, 2024, and December 31, 2023. The basis adjustments would be allocated to the amortized cost of specific securities within the pool if the hedge was dedesignated. Refer to Note 21 for additional information. During the years ended December 31, 2024, and 2023, management determined that there were no expected credit losses for securities in an unrealized loss position. This analysis considered a variety of factors including, but not limited to, performance indicators of the issuer, default rates, industry analyst reports, credit ratings, and other relevant information, which indicated that contractual cash flows are expected to occur. As a result of this evaluation, management determined that no credit reserves were required at December 31, 2024, or December 31, 2023.

Finance Receivables and Loans,

Finance Receivables and Loans, Net	12 Months Ended
	Dec. 31, 2024
Receivables [Abstract]
Finance Receivables and Loans, Net	Finance Receivables and Loans, Net The composition of finance receivables and loans reported at amortized cost basis was as follows. December 31, ($ in millions) 2024 2023 Consumer automotive (a) $ 83,757 $ 84,320 Consumer mortgage (b) 17,234 18,667 Consumer other Credit Card 2,294 1,990 Total consumer other 2,294 1,990 Total consumer 103,285 104,977 Commercial Commercial and industrial Automotive 18,259 18,700 Other 8,212 9,712 Commercial real estate 6,274 6,050 Total commercial 32,745 34,462 Total finance receivables and loans (c) (d) $ 136,030 $ 139,439 (a) Certain finance receivables and loans are included in fair value hedging relationships. Refer to Note 21 for additional information. (b) Includes loans originated as interest-only mortgage loans of $12 million and $15 million at December 31, 2024, and December 31, 2023, respectively, of which all have exited the interest-only period. (c) Totals include net unearned income, unamortized premiums and discounts, and deferred fees and costs of $2.3 billion at both December 31, 2024, and December 31, 2023. (d) Totals do not include accrued interest receivable, which was $839 million and $853 million at December 31, 2024, and December 31, 2023, respectively. Accrued interest receivable is included in other assets on our Consolidated Balance Sheet. Billed interest on our credit card loans is included within finance receivables and loans, net. The following tables present an analysis of the activity in the allowance for loan losses on finance receivables and loans for the years ended December 31, 2024, and 2023, respectively. ($ in millions) Consumer automotive Consumer mortgage Consumer other Commercial Total Allowance at January 1, 2024 $ 3,083 $ 21 $ 293 $ 190 $ 3,587 Charge-offs (a) (2,681) (2) (262) (3) (2,948) Recoveries 871 5 30 8 914 Net charge-offs (1,810) 3 (232) 5 (2,034) Write-downs from transfers to held-for-sale (b) (5) — — — (5) Provision for credit losses 1,902 (7) 259 12 2,166 Other — 2 (1) (1) — Allowance at December 31, 2024 $ 3,170 $ 19 $ 319 $ 206 $ 3,714 (a) Refer to Note 1 for information regarding our charge-off policies. (b) Consumer automotive includes a $5 million reduction of allowance from the completion of a retail securitization transaction during the year ended December 31, 2024, resulting in the deconsolidation of the assets and liabilities from our Consolidated Balance Sheet. ($ in millions) Consumer automotive Consumer mortgage Consumer other (a) Commercial Total Allowance at January 1, 2023 $ 3,020 $ 27 $ 426 $ 238 $ 3,711 Charge-offs (b) (2,284) (3) (303) (130) (2,720) Recoveries 793 9 25 6 833 Net charge-offs (1,491) 6 (278) (124) (1,887) Write-downs from transfers to held-for-sale (c) (d) (41) — (174) — (215) Provision for credit losses (e) 1,595 (11) 319 76 1,979 Other — (1) — — (1) Allowance at December 31, 2023 $ 3,083 $ 21 $ 293 $ 190 $ 3,587 (a) Excludes $3 million of finance receivables and loans at January 1, 2023, for which we have elected the fair value option and incorporate no allowance for loan losses. (b) Refer to Note 1 for information regarding our charge-off policies. (c) Consumer automotive includes a $41 million reduction of allowance from the sales of retained interests related to securitizations during 2023, resulting in the deconsolidation of the assets and liabilities from our Consolidated Balance Sheet. (d) Consumer other includes a $174 million reduction of allowance from transfers to held-for-sale related to Personal Lending. Refer to Note 2 for further information. (e) Excludes $11 million of benefit for credit losses related to our reserve for unfunded commitments. The remaining liability related to the reserve for unfunded commitments is included in accrued expenses and other liabilities on our Consolidated Balance Sheet, excluding $5 million related to Personal Lending, which was transferred to liabilities of operations held-for-sale as of December 31, 2023. Refer to Note 2 for further information. The following table presents sales of finance receivables and loans and transfers of finance receivables and loans from held-for-investment to held-for-sale based on net carrying value. Year ended December 31, ($ in millions) 2024 2023 Consumer automotive $ 1,108 $ 1,667 Consumer mortgage 325 — Consumer other (a) — 1,940 Commercial 298 132 Total sales and transfers $ 1,731 $ 3,739 (a) Consists of personal lending finance receivables and loans. These were transferred to loans held-for-sale, and were included in assets of operations held-for-sale on our Consolidated Balance Sheet at December 31, 2023. We closed the sale of Ally Lending on March 1, 2024. Refer to Note 2 for additional information. The following table presents purchases of finance receivables and loans based on unpaid principal balance at the time of purchase. Year ended December 31, ($ in millions) 2024 2023 Consumer automotive $ 3,243 $ 3,861 Consumer mortgage 21 21 Commercial — 10 Total purchases of finance receivables and loans $ 3,264 $ 3,892 Nonaccrual Loans The following tables present the amortized cost of our finance receivables and loans on nonaccrual status. All consumer or commercial finance receivables and loans that were 90 days or more past due were on nonaccrual status as of December 31, 2024, and December 31, 2023. Refer to Note 1 for additional information on our accounting policy for finance receivables and loans on nonaccrual status. December 31, 2024 ($ in millions) Nonaccrual status at Jan. 1, 2024 Nonaccrual status Nonaccrual with no allowance (a) Consumer automotive $ 1,129 $ 1,231 $ 476 Consumer mortgage 54 54 36 Consumer other Credit Card 92 90 — Total consumer other 92 90 — Total consumer 1,275 1,375 512 Commercial Commercial and industrial Automotive 18 15 — Other 98 94 4 Commercial real estate 3 2 2 Total commercial 119 111 6 Total finance receivables and loans (b) $ 1,394 $ 1,486 $ 518 (a) Represents a component of nonaccrual status at end of period. (b) We recorded interest income from cash payments associated with finance receivables and loans on nonaccrual status of $17 million for the year ended December 31, 2024. December 31, 2023 ($ in millions) Nonaccrual status at Jan. 1, 2023 Nonaccrual status Nonaccrual with no allowance (a) Consumer automotive $ 1,187 $ 1,129 $ 531 Consumer mortgage 49 54 33 Consumer other Personal Lending (b) 13 — — Credit Card 43 92 — Total consumer other 56 92 — Total consumer 1,292 1,275 564 Commercial Commercial and industrial Automotive 5 18 13 Other 157 98 5 Commercial real estate — 3 3 Total commercial 162 119 21 Total finance receivables and loans (c) $ 1,454 $ 1,394 $ 585 (a) Represents a component of nonaccrual status at end of period. (b) Personal Lending finance receivables and loans were transferred to loans held-for-sale, and were included in assets of operations held-for-sale on our Consolidated Balance Sheet at December 31, 2023. We closed the sale of Ally Lending on March 1, 2024. Refer to Note 2 for additional information. (c) We recorded interest income from cash payments associated with finance receivables and loans on nonaccrual status of $16 million for the year ended December 31, 2023. Credit Quality Indicators We evaluate the credit quality of our consumer loan portfolio based on the aging status of the loan and by payment activity. Loan delinquency reporting is generally based upon borrower payment activity, relative to the contractual terms of the loan. The following tables present the amortized cost basis of our consumer finance receivables and loans by credit quality indicator based on delinquency status and origination year. Origination year Revolving loans converted to term December 31, 2024 ($ in millions) 2024 2023 2022 2021 2020 2019 and prior Revolving loans Total Consumer automotive Current $ 30,322 $ 20,387 $ 15,234 $ 8,368 $ 3,064 $ 1,849 $ — $ — $ 79,224 30–59 days past due 419 756 841 546 174 141 — — 2,877 60–89 days past due 131 338 390 240 75 56 — — 1,230 90 or more days past due 47 123 142 93 31 31 — — 467 Total consumer automotive (a) 30,919 21,604 16,607 9,247 3,344 2,077 — — 83,798 Consumer mortgage Current 13 31 1,901 9,834 1,714 3,503 115 15 17,126 30–59 days past due — — 7 9 5 27 — — 48 60–89 days past due — — 4 4 1 4 — — 13 90 or more days past due — 2 2 9 1 30 1 2 47 Total consumer mortgage 13 33 1,914 9,856 1,721 3,564 116 17 17,234 Consumer other Credit Card Current — — — — — — 2,140 — 2,140 30–59 days past due — — — — — — 35 — 35 60–89 days past due — — — — — — 33 — 33 90 or more days past due — — — — — — 86 — 86 Total Credit Card — — — — — — 2,294 — 2,294 Total consumer other — — — — — — 2,294 — 2,294 Total consumer $ 30,932 $ 21,637 $ 18,521 $ 19,103 $ 5,065 $ 5,641 $ 2,410 $ 17 $ 103,326 (a) Certain consumer automotive loans are included in fair value hedging relationships. The amortized cost excludes a liability of $41 million related to basis adjustments for loans in closed portfolios with active hedges under the portfolio layer method at December 31, 2024. These basis adjustments would be allocated to the amortized cost of specific loans within the pool if the hedge was dedesignated. Refer to Note 21 for additional information. Origination year Revolving loans converted to term December 31, 2023 ($ in millions) 2023 2022 2021 2020 2019 2018 and prior Revolving loans Total Consumer automotive Current $ 30,677 $ 23,699 $ 14,209 $ 6,132 $ 3,306 $ 1,876 $ — $ — $ 79,899 30–59 days past due 539 1,041 739 270 181 122 — — 2,892 60–89 days past due 170 443 303 109 68 45 — — 1,138 90 or more days past due 64 167 122 44 32 28 — — 457 Total consumer automotive (a) 31,450 25,350 15,373 6,555 3,587 2,071 — — 84,386 Consumer mortgage Current 152 2,170 10,374 1,836 747 3,124 142 17 18,562 30–59 days past due 1 8 14 3 3 23 — 1 53 60–89 days past due — 2 4 3 — 6 1 — 16 90 or more days past due — 1 4 1 2 25 2 1 36 Total consumer mortgage 153 2,181 10,396 1,843 752 3,178 145 19 18,667 Consumer other Credit Card Current — — — — — — 1,828 — 1,828 30–59 days past due — — — — — — 39 — 39 60–89 days past due — — — — — — 34 — 34 90 or more days past due — — — — — — 89 — 89 Total Credit Card — — — — — — 1,990 — 1,990 Total consumer other (b) — — — — — — 1,990 — 1,990 Total consumer $ 31,603 $ 27,531 $ 25,769 $ 8,398 $ 4,339 $ 5,249 $ 2,135 $ 19 $ 105,043 (a) Certain consumer automotive loans are included in fair value hedging relationships. The amortized cost excludes a liability of $66 million related to basis adjustments for loans in closed portfolios with active hedges under the portfolio layer method at December 31, 2023. These basis adjustments would be allocated to the amortized cost of specific loans within the pool if the hedge was dedesignated. Refer to Note 21 for additional information. (b) Excludes Personal Lending finance receivables and loans, which were transferred to loans held-for-sale, and were included in assets of operations held-for-sale on our Consolidated Balance Sheet at December 31, 2023. We closed the sale of Ally Lending on March 1, 2024. Refer to Note 2 for additional information. We evaluate the credit quality of our commercial loan portfolio using regulatory risk ratings, which are based on relevant information about the borrower’s financial condition, including current financial information, historical payment experience, credit documentation, and current economic trends, among other factors. We use the following definitions for risk ratings below Pass. • Special mention — Loans that have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or the institution’s credit position at some future date. • Substandard — Loans that are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. These loans have a well-defined weakness or weakness that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. • Doubtful — Loans that have all the weaknesses inherent in those classified as substandard, with the additional characteristic that the weaknesses make collection or liquidation in full, based on the basis of currently existing facts, conditions, and values, highly questionable and improbable. • Loss — Loans that are considered uncollectible and of such little value that their continuance as bankable assets is not warranted. This classification does not mean that the asset has absolutely no recovery or salvage value, but rather that it is not practical or desirable to defer writing off this basically worthless asset even though partial recovery may be effected in the future. The regulatory risk classification utilized is influenced by internal credit risk ratings, which are based on a variety of factors. A borrower’s internal credit risk rating is updated at least annually, and more frequently when a borrower’s credit profile changes, including when we become aware of potential credit deterioration. The following tables present the amortized cost basis of our commercial finance receivables and loans by credit quality indicator based on risk rating and origination year. Origination year Revolving loans converted to term December 31, 2024 ($ in millions) 2024 2023 2022 2021 2020 2019 and prior Revolving loans Total Commercial Commercial and industrial Automotive Pass $ 522 $ 336 $ 337 $ 125 $ 64 $ 52 $ 15,005 $ — $ 16,441 Special mention 3 38 15 25 3 1 1,694 — 1,779 Substandard — — — — — — 33 — 33 Doubtful — — — — — — 6 — 6 Total automotive 525 374 352 150 67 53 16,738 — 18,259 Other Pass 707 296 261 199 18 205 5,047 84 6,817 Special mention — — 394 280 186 76 226 32 1,194 Substandard — 27 — 23 46 54 12 4 166 Doubtful — — — — — 26 9 — 35 Total other 707 323 655 502 250 361 5,294 120 8,212 Commercial real estate Pass 959 904 1,228 1,030 757 1,137 — 36 6,051 Special mention 6 51 69 57 35 3 — — 221 Doubtful — — 1 — — 1 — — 2 Total commercial real estate 965 955 1,298 1,087 792 1,141 — 36 6,274 Total commercial $ 2,197 $ 1,652 $ 2,305 $ 1,739 $ 1,109 $ 1,555 $ 22,032 $ 156 $ 32,745 Origination year Revolving loans converted to term December 31, 2023 ($ in millions) 2023 2022 2021 2020 2019 2018 and prior Revolving loans Total Commercial Commercial and industrial Automotive Pass $ 509 $ 512 $ 165 $ 97 $ 58 $ 22 $ 16,446 $ — $ 17,809 Special mention 6 7 30 1 1 14 723 — 782 Substandard — 1 — — — — 44 — 45 Doubtful — — — — — 1 63 — 64 Total automotive 515 520 195 98 59 37 17,276 — 18,700 Other Pass 331 646 343 405 266 180 6,202 173 8,546 Special mention — 208 188 206 51 85 198 25 961 Substandard — — 46 3 — 83 25 11 168 Doubtful — — — — — 26 10 — 36 Loss — — — — 1 — — — 1 Total other 331 854 577 614 318 374 6,435 209 9,712 Commercial real estate Pass 971 1,452 1,129 884 607 811 100 26 5,980 Special mention 3 16 28 1 18 — — — 66 Substandard — 3 — — — 1 — — 4 Total commercial real estate 974 1,471 1,157 885 625 812 100 26 6,050 Total commercial $ 1,820 $ 2,845 $ 1,929 $ 1,597 $ 1,002 $ 1,223 $ 23,811 $ 235 $ 34,462 The following table presents an analysis of our past-due commercial finance receivables and loans recorded at amortized cost basis. ($ in millions) 30–59 days past due 60–89 days past due 90 days or more past due Total past due Current Total finance receivables and loans December 31, 2024 Commercial Commercial and industrial Automotive $ 5 $ — $ — $ 5 $ 18,254 $ 18,259 Other 35 — — 35 8,177 8,212 Commercial real estate 1 — 1 2 6,272 6,274 Total commercial $ 41 $ — $ 1 $ 42 $ 32,703 $ 32,745 December 31, 2023 Commercial Commercial and industrial Automotive $ — $ — $ — $ — $ 18,700 $ 18,700 Other 2 — 3 5 9,707 9,712 Commercial real estate — — — — 6,050 6,050 Total commercial $ 2 $ — $ 3 $ 5 $ 34,457 $ 34,462 The following tables present gross charge-offs of our finance receivables and loans for each portfolio class by origination year during the years ended December 31, 2024, and 2023, respectively. Refer to Note 1 for additional information on our charge-off policy. Origination year Revolving loans converted to term December 31, 2024 ($ in millions) 2024 2023 2022 2021 2020 2019 and prior Revolving loans Total Consumer automotive (a) $ 160 $ 779 $ 943 $ 510 $ 137 $ 152 $ — $ — $ 2,681 Consumer mortgage — — — 1 — 1 — — 2 Consumer other Credit Card — — — — — — 246 16 262 Total consumer other — — — — — — 246 16 262 Total consumer 160 779 943 511 137 153 246 16 2,945 Commercial Commercial and industrial Automotive — — — — — 1 2 — 3 Total commercial — — — — — 1 2 — 3 Total finance receivables and loans $ 160 $ 779 $ 943 $ 511 $ 137 $ 154 $ 248 $ 16 $ 2,948 (a) Excludes $5 million of write-downs from transfers to held-for-sale from the completion of a retail securitization transaction during the year ended December 31, 2024, resulting in the deconsolidation of the assets and liabilities from our Consolidated Balance Sheet. Origination year Revolving loans converted to term December 31, 2023 ($ in millions) 2023 2022 2021 2020 2019 2018 and prior Revolving loans Total Consumer automotive (a) $ 225 $ 952 $ 651 $ 194 $ 142 $ 120 $ — $ — $ 2,284 Consumer mortgage — — — — — 3 — — 3 Consumer other Personal Lending (b) 14 82 29 3 — — — — 128 Credit Card — — — — — — 165 10 175 Total consumer other 14 82 29 3 — — 165 10 303 Total consumer 239 1,034 680 197 142 123 165 10 2,590 Commercial Commercial and industrial Automotive — — — — — 5 19 — 24 Other — — — — 79 23 4 — 106 Total commercial — — — — 79 28 23 — 130 Total finance receivables and loans $ 239 $ 1,034 $ 680 $ 197 $ 221 $ 151 $ 188 $ 10 $ 2,720 (a) Excludes $41 million of write-downs from transfers to held-for-sale from the sales of retained interests related to securitizations during 2023, resulting in the deconsolidation of the assets and liabilities from our Consolidated Balance Sheet. (b) Excludes $174 million of write-downs from the transfer to held-for-sale related to Personal Lending. Refer to Note 2 for additional information. Loan Modifications The following tables present the amortized cost basis of loans that were modified subsequent to origination during the years ended December 31, 2024, and 2023, respectively, for each portfolio segment, by modification type. For additional information on loan modification types in scope of this disclosure, refer to Note 1. The below tables exclude consumer mortgage finance receivables and loans currently enrolled in a trial modification program. Trial modifications generally represent a three-month period during which the borrower makes monthly payments under the anticipated modified payment terms. If the borrower successfully completes the trial loan modification program, the contractual terms of the loan are updated and the modification is considered permanent. As of December 31, 2024, and 2023, there were $4 million and $5 million of consumer mortgage finance receivables and loans in a trial modification program, respectively. Payment extensions Year ended December 31, 2024 ($ in millions) Payment deferrals Contractual maturity extensions Principal forgiveness Interest rate concessions Combination Total (a) Consumer automotive $ — $ 418 $ 5 $ — $ 2 $ 425 Consumer mortgage — 2 — — 1 3 Consumer other Credit Card — — — 16 — 16 Total consumer other — — — 16 — 16 Total consumer — 420 5 16 3 444 Commercial Commercial and industrial Automotive 2 — — 7 — 9 Other — 168 — — 14 182 Commercial real estate — — — — 1 1 Total commercial 2 168 — 7 15 192 Total finance receivables and loans $ 2 $ 588 $ 5 $ 23 $ 18 $ 636 (a) Represents 0.5% of total finance receivables and loans outstanding as of December 31, 2024. Payment extensions Year ended December 31, 2023 ($ in millions) Payment deferrals (a) Contractual maturity extensions Principal forgiveness Interest rate concessions Combination Total (b) Consumer automotive $ — $ 234 $ 13 $ — $ 28 $ 275 Consumer mortgage — 4 — — 4 8 Consumer other Credit Card — — — 13 — 13 Total consumer other — — — 13 — 13 Total consumer — 238 13 13 32 296 Commercial Commercial and industrial Other 36 46 — — — 82 Total commercial 36 46 — — — 82 Total finance receivables and loans $ 36 $ 284 $ 13 $ 13 $ 32 $ 378 (a) Includes a commercial and industrial loan within our Corporate Finance operations that was also granted a three-month contractual maturity extension during the year ended December 31, 2023. (b) Represents 0.3% of total finance receivables and loans outstanding as of December 31, 2023. Total commitments to lend additional funds to borrowers whose loans were modified during the years ended December 31, 2024, and 2023, were $39 million and $6 million as of December 31, 2024, and 2023, respectively. The following tables present the financial effect of loan modifications that occurred during the years ended December 31, 2024, and 2023, respectively. Payment extensions (a) Principal forgiveness Interest rate concessions (a) Combination (a) (b) (c) Year ended December 31, 2024 ($ in millions) Number of months extended/deferred Amount forgiven Initial rate Revised rate Remaining term Revised remaining term Initial rate Revised rate Consumer automotive 30 $ 2 — % — % 72 85 14.3 % 12.0 % Consumer mortgage 176 — — — 305 449 4.1 3.1 Consumer other Credit Card — 2 29.6 7.3 — — — — Total consumer other — $ 2 29.6 7.3 — — — — Commercial Commercial and industrial Automotive 6 $ — 5.0 % 3.0 % — — — % — % Other 37 — — — 4 60 5.5 4.3 Commercial real estate — — — — 84 93 11.0 6.0 Total commercial 36 $ — 5.0 3.0 7 61 5.7 4.3 (a) Calculated using a weighted-average balance for each portfolio class. (b) Term is presented in number of months. (c) Some consumer mortgage combination loan modifications include deferrals of principal. The weighted average number of months deferred for these loans was 325 months. Payment extensions (a) Principal forgiveness Interest rate concessions (a) Combination (a) (b) (c) Year ended December 31, 2023 ($ in millions) Number of months extended/deferred Amount forgiven Initial rate Revised rate Remaining term Revised remaining term Initial rate Revised rate Consumer automotive 29 $ 3 — % — % 74 86 10.3 % 9.5 % Consumer mortgage 132 — — — 286 442 4.4 3.1 Consumer other Credit Card — — 30.0 8.0 — — — — Total consumer other — $ — 30.0 8.0 — — — — Commercial Commercial and industrial Other (d) 15 $ — — % — % — — — % — % Total commercial 15 $ — — — — — — — (a) Calculated using a weighted-average balance for each portfolio class. (b) Term is presented in number of months. (c) Some consumer mortgage combination loan modifications include deferrals of principal. The weighted average number of months deferred for these loans was 207 months. (d) Includes a commercial and industrial loan within our Corporate Finance operations that was also granted a three-month contractual maturity extension during the year ended December 31, 2023. The following tables present the subsequent performance of loans recorded at amortized cost, by portfolio segment and credit quality indicator, that were modified within the 12 months prior to December 31, 2024, and 2023, respectively. December 31, 2024 ($ in millions) Current 30–59 days past due 60–89 days past due 90 or more days past due Total Consumer automotive Contractual maturity extensions $ 318 $ 68 $ 25 $ 7 $ 418 Principal forgiveness — — — 5 5 Combination 2 — — — 2 Total consumer automotive 320 68 25 12 425 Consumer mortgage Contractual maturity extensions 1 — 1 — 2 Combination 1 — — — 1 Total consumer mortgage 2 — 1 — 3 Consumer other Credit Card Interest rate concessions 10 2 1 3 16 Total consumer other 10 2 1 3 16 Total consumer $ 332 $ 70 $ 27 $ 15 $ 444 December 31, 2024 ($ in millions) Pass Special mention Substandard Doubtful Total Commercial and industrial Automotive Payment deferrals $ — $ — $ 2 $ — $ 2 Interest rate concessions — — — 7 7 Other Contractual maturity extensions 113 — 55 — 168 Combination — — 14 — 14 Commercial real estate Combination — — — 1 1 Total commercial $ 113 $ — $ 71 $ 8 $ 192 December 31, 2023 ($ in millions) Current 30–59 days past due 60–89 days past due 90 or more days past due Total Consumer automotive Contractual maturity extensions $ 202 $ 24 $ 7 $ 1 $ 234 Principal forgiveness 7 1 — 5 13 Combination 25 2 — 1 28 Total consumer automotive 234 27 7 7 275 Consumer mortgage Contractual maturity extensions 4 — — — 4 Combination 2 — — 2 4 Total consumer mortgage 6 — — 2 8 Consumer other Credit Card Interest rate concessions 7 2 1 3 13 Total consumer other 7 2 1 3 13 Total consumer $ 247 $ 29 $ 8 $ 12 $ 296 December 31, 2023 ($ in millions) Pass Special mention Substandard Doubtful Total Commercial and industrial Other Payment deferrals (a) $ — $ — $ — $ 36 $ 36 Contractual maturity extensions 34 7 5 — 46 Total commercial $ 34 $ 7 $ 5 $ 36 $ 82 (a) Includes a commercial and industrial loan within our Corporate Finance operations that was also granted a three-month contractual maturity extension during the year ended December 31, 2023. As of December 31, 2024, 1,616 consumer automotive loans with a total amortized cost of $39 million redefaulted within 12 months of modification. As of December 31, 2023, 235 consumer automotive loans with a total amortized cost of $5 million and 1 consumer mortgage loan with a total amortized cost of $2 million redefaulted. Troubled Debt Restructuring Disclosures Prior to the Adoption of ASU 2022-02 The adoption of ASU 2022-02 eliminated TDR recognition and measurement guidance, as well as all TDR-related disclosures. Refer to Note 1 for additional information. TDRs were loan modifications where concessions were granted to borrowers experiencing financial difficulties. Total TDRs recorded at amortized cost were $2.4 billion at December 31, 2022. Total commitments to lend additional funds to borrowers whose terms had been modified in a TDR were $61 million at December 31, 2022. The following table presents information related to finance receivables and loans recorded at amortized cost modified in connection with a TDR during the period. Year ended December 31, 2022 ($ in millions) Number of loans Pre-modification amortized cost basis Post-modification amortized cost basis Consumer automotive 49,773 $ 831 $ 805 Consumer mortgage 31 13 13 Consumer other Credit Card 2,853 5 5 Total consumer other 2,853 5 5 Total consumer 52,657 849 823 Commercial Commercial and industrial Other 5 461 466 Total commercial 5 461 466 Total finance receivables and loans 52,662 $ 1,310 $ 1,289 The following table presents information about finance receivables and loans recorded at amortized cost that have redefaulted during the reporting period and were within 12 months or less of being modified as a TDR. Redefault is when finance receivables and loans meet the requirements for evaluation under our charge-off policy except for commercial finance receivables and loans, where redefault is defined as 90 days past due. Year ended December 31, 2022 ($ in millions) Number of loans Amortized cost Charge-off amount Consumer automotive 9,227 $ 143 $ 64 Consumer mortgage 4 2 — Consumer Other Credit Card 457 — — Total consumer other 457 — — Total consumer 9,688 145 64 Commercial Commercial and industrial Other 1 1 31 Total commercial 1 1 31 Total finance receivables and loans 9,689 $ 146 $ 95 Concentration Risk Consumer We monitor our consumer loan portfolio for concentration risk across the states in which we lend. The highest concentrations of consumer loans are in California and Texas, which represented an aggregate of 26.0% and 26.4% of our total consumer finance receivables and loans at December 31, 2024, and December 31, 2023, respectively. The following table shows the percentage of consumer automotive, consumer mortgage, and consumer other finance receivables and loans by state concentration based on amortized cost. 2024 (a) 2023 December 31, Consumer automotive Consumer mortgage Consumer other Consumer automotive Consumer mortgage Consumer other (b) California 8.5 % 39.9 % 9.3 % 8.5 % 39.2 % 9.4 % Texas 13.5 7.2 7.8 13.7 7.3 7.6 Florida 9.3 6.2 9.1 9.5 6.5 9.0 North Carolina 4.6 1.9 3.0 4.3 1.9 2.9 Pennsylvania 4.5 2.1 4.1 4.5 2.1 4.2 Georgia 4.0 2.9 3.7 4.1 2.9 3.7 New York 3.8 1.9 5.4 3.7 1.9 5.4 New Jersey 3.3 2.5 3.5 3.2 2.4 3.7 Illinois 3.2 2.8 4.6 3.3 2.8 4.6 Ohio 3.3 0.4 4.5 3.4 0.4 4.5 Other United States 42.0 32.2 45.0 41.8 32.6 45.0 Total consumer loans 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % (a) Presentation is in descending order as a percentage of total consumer finance receivables and loans at December 31, 2024. (b) Excludes Personal Lending finance receivables and loans, which were transferred to loans held-for-sale, and were included in assets of operations held-for-sale on our Consolidated Balance Sheet at December 31, 2023. We closed the sale of Ally Lending on March 1, 2024. Refer to Note 2 for additional information. Commercial Real Estate The commercial real estate portfolio consists of finance receivables and loans issued primarily to automotive dealers. The following table presents the percentage of total commercial real estate finance receivables and loans by state concentration based on amortized cost. December 31, 2024 2023 Florida 16.0 % 17.6 % Texas 14.1 13.6 California 6.6 7.9 Ohio 5.6 5.9 New York 5.4 4.5 North Carolina 4.8 5.0 Michigan 4.1 5.4 Georgia 3.3 3.0 Missouri 2.9 2.8 Illinois 2.6 2.6 Other United States 34.6 31.7 Total commercial real estate finance receivables and loans 100.0 % 100.0 % Commercial Criticized Exposure Finance receivables and loans classified as special mention, substandard, or doubtful are reported as criticized. These classifications are based on regulatory definitions and generally represent finance receivables and loans within our portfolio that have a higher default risk or have already defaulted. These finance receivables and loans require additional monitoring and review including specific actions to mitigate our potential loss. The following table presents the percentage of total commercial criticized finance receivables and loans by industry concentration based on amortized cost. December 31, 2024 2023 Industry Automotive 64.4 % 54.0 % Electronics 12.8 13.4 Services 9.0 12.8 Other 13.8 19.8 Total commercial criticized finance receivables and loans 100.0 % 100.0 %

Leasing

Leasing	12 Months Ended
	Dec. 31, 2024
Leases [Abstract]
Leasing	Leasing Ally as the Lessee We have operating leases for certain of our corporate facilities, which have remaining lease terms of 6 months to 6 years. Most of the property leases have fixed payment terms with annual fixed-escalation clauses and include options to extend or terminate the lease. We do not include these term extensions or termination provisions in our estimates of the lease term if we do not consider it reasonably certain that the options will be exercised. We also have operating leases for a fleet of vehicles that is used by our sales force for business purposes, with noncancelable lease terms of 367 days. Thereafter, the leases are month-to-month, up to a maximum of 48 months from inception. During the years ended December 31, 2024, and December 31, 2023, we paid $35 million and $33 million in cash for amounts included in the measurement of lease liabilities at December 31, 2024, and December 31, 2023, respectively. These amounts are included in net cash provided by operating activities in the Consolidated Statement of Cash Flows. During the years ended December 31, 2024, and December 31, 2023, we obtained $34 million and $10 million, respectively, of ROU assets in exchange for new lease liabilities. As of December 31, 2024, the weighted-average remaining lease term of our operating lease portfolio was 3 years, and the weighted-average discount rate was 3.32%, compared to 4 years and 2.85% as of December 31, 2023. The following table presents future minimum rental payments we are required to make under operating leases that have commenced as of December 31, 2024, and that have noncancelable lease terms expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 38 2026 35 2027 25 2028 17 2029 1 2030 and thereafter 1 Total undiscounted cash flows 117 Difference between undiscounted cash flows and discounted cash flows (6) Total lease liability $ 111 The following table details the components of total net operating lease expense. Year ended December 31, ($ in millions) 2024 2023 2022 Operating lease expense $ 30 $ 29 $ 33 Variable lease expense 4 5 4 Total lease expense, net (a) $ 34 $ 34 $ 37 (a) Included in other operating expenses in our Consolidated Statement of Income. Ally as the Lessor Investment in Operating Leases We purchase consumer operating lease contracts and the associated vehicles from automotive dealerships or manufacturers after those contracts are executed. The amount we pay for an operating lease contract is based on the negotiated price for the vehicle less vehicle trade-in, down payment from the consumer, tax credits, and available automotive manufacturer incentives. Under the operating lease, the consumer is obligated to make payments in amounts equal to the amount by which the negotiated purchase price of the vehicle (less any trade-in value, down payment, tax credits, or available manufacturer incentives) exceeds the contract residual value (including residual support) of the vehicle at lease termination, plus operating lease rental charges. The customer can terminate the lease at any point after commencement, subject to additional charges and fees. The consumer, dealership, or automotive manufacturer may have the option to purchase the vehicle at the end of the lease term, which generally range from 24 to 60 months, at the residual value of the vehicle, however it is not reasonably certain this option will be exercised and accordingly our consumer leases are classified as operating leases. In addition to the charges described above, the consumer is generally responsible for certain charges related to excess mileage or excessive wear and tear on the vehicle. These charges are deemed variable lease payments and, as these payments are not based on a rate or index, they are recognized as net depreciation expense on operating lease assets in our Consolidated Statement of Income as incurred. When we acquire a consumer operating lease, we assume ownership of the vehicle. We require that property damage, bodily injury, collision, and comprehensive insurance be obtained by the lessee on all consumer operating leases. Neither the consumer, dealer, nor automotive manufacturer is responsible for the value of the vehicle at the time of lease termination. When vehicles are not purchased by customers, the receiving dealer, or automotive manufacturer at scheduled lease termination, the vehicle is returned to us for remarketing. We generally bear the risk of loss to the extent the value of a leased vehicle upon remarketing is below the expected residual value after adjusting for any residual value guarantees. At termination, our actual sales proceeds from remarketing the vehicle may be higher or lower than the estimated residual value after adjusting for any residual value guarantees resulting in a gain or loss on remarketing, which is included in net depreciation expense on operating lease assets in our Consolidated Statement of Income. Excessive mileage or excessive wear and tear on the vehicle during the lease may impact the sales proceeds received upon remarketing. As of December 31, 2024, and December 31, 2023, consumer operating leases with a carrying value, net of accumulated depreciation, of $1.9 billion and $12 million, respectively, were covered by OEM residual value guarantees. The increase is primarily driven by a new automotive manufacturer relationship added during the year ended December 31, 2024. As of December 31, 2024, $1 million is under a residual value guarantee of 15% of the automotive manufacturer’s suggested retail price and $1.9 billion is under a residual value guarantee of approximately 50% of the vehicles’ contract residual value. As of December 31, 2023, $12 million was under a residual value guarantee of 15% of the automotive manufacturer’s suggested retail price. The following table details our investment in operating leases. Year ended December 31, ($ in millions) 2024 2023 Vehicles $ 9,519 $ 11,015 Accumulated depreciation (1,528) (1,930) Investment in operating leases, net $ 7,991 $ 9,085 The following table presents future minimum rental payments we have the right to receive under operating leases with noncancelable lease terms expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 1,269 2026 881 2027 369 2028 35 2029 3 Total lease payments from operating leases $ 2,557 We recognized operating lease revenue of $1.4 billion for the year ended December 31, 2024, and $1.6 billion for both of the years ended December 31, 2023, and 2022. Depreciation expense on operating lease assets includes net remarketing gains recognized on the sale of operating lease assets. The following table summarizes the components of depreciation expense on operating lease assets. Year ended December 31, ($ in millions) 2024 2023 2022 Depreciation expense on operating lease assets (excluding remarketing gains) (a) $ 868 $ 1,051 $ 1,084 Remarketing gains, net (132) (211) (170) Net depreciation expense on operating lease assets $ 736 $ 840 $ 914 (a) Includes variable lease payments related to excess mileage and excessive wear and tear on vehicles of $21 million, $9 million, and $7 million during the years ended December 31, 2024, 2023, and 2022, respectively. Finance Leases In our Automotive Finance operations, we also hold automotive leases that require finance lease treatment as prescribed by ASC Topic 842, Leases . Our total gross investment in finance leases, which is included in finance receivables and loans, net, on our Consolidated Balance Sheet was $496 million and $537 million as of December 31, 2024, and December 31, 2023, respectively. This includes lease payment receivables of $496 million and $531 million at December 31, 2024, and December 31, 2023, respectively, and unguaranteed residual assets of $6 million at December 31, 2023. Interest income on finance lease receivables was $46 million for the year ended December 31, 2024, and $40 million for the year ended December 31, 2023, and is included in interest and fees on finance receivables and loans in our Consolidated Statement of Income. The following table presents future minimum rental payments we have the right to receive under finance leases with noncancelable lease terms expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 188 2026 159 2027 122 2028 64 2029 32 2030 and thereafter 11 Total undiscounted cash flows 576 Difference between undiscounted cash flows and discounted cash flows (80) Present value of lease payments recorded as lease receivable $ 496
Leasing	Leasing Ally as the Lessee We have operating leases for certain of our corporate facilities, which have remaining lease terms of 6 months to 6 years. Most of the property leases have fixed payment terms with annual fixed-escalation clauses and include options to extend or terminate the lease. We do not include these term extensions or termination provisions in our estimates of the lease term if we do not consider it reasonably certain that the options will be exercised. We also have operating leases for a fleet of vehicles that is used by our sales force for business purposes, with noncancelable lease terms of 367 days. Thereafter, the leases are month-to-month, up to a maximum of 48 months from inception. During the years ended December 31, 2024, and December 31, 2023, we paid $35 million and $33 million in cash for amounts included in the measurement of lease liabilities at December 31, 2024, and December 31, 2023, respectively. These amounts are included in net cash provided by operating activities in the Consolidated Statement of Cash Flows. During the years ended December 31, 2024, and December 31, 2023, we obtained $34 million and $10 million, respectively, of ROU assets in exchange for new lease liabilities. As of December 31, 2024, the weighted-average remaining lease term of our operating lease portfolio was 3 years, and the weighted-average discount rate was 3.32%, compared to 4 years and 2.85% as of December 31, 2023. The following table presents future minimum rental payments we are required to make under operating leases that have commenced as of December 31, 2024, and that have noncancelable lease terms expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 38 2026 35 2027 25 2028 17 2029 1 2030 and thereafter 1 Total undiscounted cash flows 117 Difference between undiscounted cash flows and discounted cash flows (6) Total lease liability $ 111 The following table details the components of total net operating lease expense. Year ended December 31, ($ in millions) 2024 2023 2022 Operating lease expense $ 30 $ 29 $ 33 Variable lease expense 4 5 4 Total lease expense, net (a) $ 34 $ 34 $ 37 (a) Included in other operating expenses in our Consolidated Statement of Income. Ally as the Lessor Investment in Operating Leases We purchase consumer operating lease contracts and the associated vehicles from automotive dealerships or manufacturers after those contracts are executed. The amount we pay for an operating lease contract is based on the negotiated price for the vehicle less vehicle trade-in, down payment from the consumer, tax credits, and available automotive manufacturer incentives. Under the operating lease, the consumer is obligated to make payments in amounts equal to the amount by which the negotiated purchase price of the vehicle (less any trade-in value, down payment, tax credits, or available manufacturer incentives) exceeds the contract residual value (including residual support) of the vehicle at lease termination, plus operating lease rental charges. The customer can terminate the lease at any point after commencement, subject to additional charges and fees. The consumer, dealership, or automotive manufacturer may have the option to purchase the vehicle at the end of the lease term, which generally range from 24 to 60 months, at the residual value of the vehicle, however it is not reasonably certain this option will be exercised and accordingly our consumer leases are classified as operating leases. In addition to the charges described above, the consumer is generally responsible for certain charges related to excess mileage or excessive wear and tear on the vehicle. These charges are deemed variable lease payments and, as these payments are not based on a rate or index, they are recognized as net depreciation expense on operating lease assets in our Consolidated Statement of Income as incurred. When we acquire a consumer operating lease, we assume ownership of the vehicle. We require that property damage, bodily injury, collision, and comprehensive insurance be obtained by the lessee on all consumer operating leases. Neither the consumer, dealer, nor automotive manufacturer is responsible for the value of the vehicle at the time of lease termination. When vehicles are not purchased by customers, the receiving dealer, or automotive manufacturer at scheduled lease termination, the vehicle is returned to us for remarketing. We generally bear the risk of loss to the extent the value of a leased vehicle upon remarketing is below the expected residual value after adjusting for any residual value guarantees. At termination, our actual sales proceeds from remarketing the vehicle may be higher or lower than the estimated residual value after adjusting for any residual value guarantees resulting in a gain or loss on remarketing, which is included in net depreciation expense on operating lease assets in our Consolidated Statement of Income. Excessive mileage or excessive wear and tear on the vehicle during the lease may impact the sales proceeds received upon remarketing. As of December 31, 2024, and December 31, 2023, consumer operating leases with a carrying value, net of accumulated depreciation, of $1.9 billion and $12 million, respectively, were covered by OEM residual value guarantees. The increase is primarily driven by a new automotive manufacturer relationship added during the year ended December 31, 2024. As of December 31, 2024, $1 million is under a residual value guarantee of 15% of the automotive manufacturer’s suggested retail price and $1.9 billion is under a residual value guarantee of approximately 50% of the vehicles’ contract residual value. As of December 31, 2023, $12 million was under a residual value guarantee of 15% of the automotive manufacturer’s suggested retail price. The following table details our investment in operating leases. Year ended December 31, ($ in millions) 2024 2023 Vehicles $ 9,519 $ 11,015 Accumulated depreciation (1,528) (1,930) Investment in operating leases, net $ 7,991 $ 9,085 The following table presents future minimum rental payments we have the right to receive under operating leases with noncancelable lease terms expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 1,269 2026 881 2027 369 2028 35 2029 3 Total lease payments from operating leases $ 2,557 We recognized operating lease revenue of $1.4 billion for the year ended December 31, 2024, and $1.6 billion for both of the years ended December 31, 2023, and 2022. Depreciation expense on operating lease assets includes net remarketing gains recognized on the sale of operating lease assets. The following table summarizes the components of depreciation expense on operating lease assets. Year ended December 31, ($ in millions) 2024 2023 2022 Depreciation expense on operating lease assets (excluding remarketing gains) (a) $ 868 $ 1,051 $ 1,084 Remarketing gains, net (132) (211) (170) Net depreciation expense on operating lease assets $ 736 $ 840 $ 914 (a) Includes variable lease payments related to excess mileage and excessive wear and tear on vehicles of $21 million, $9 million, and $7 million during the years ended December 31, 2024, 2023, and 2022, respectively. Finance Leases In our Automotive Finance operations, we also hold automotive leases that require finance lease treatment as prescribed by ASC Topic 842, Leases . Our total gross investment in finance leases, which is included in finance receivables and loans, net, on our Consolidated Balance Sheet was $496 million and $537 million as of December 31, 2024, and December 31, 2023, respectively. This includes lease payment receivables of $496 million and $531 million at December 31, 2024, and December 31, 2023, respectively, and unguaranteed residual assets of $6 million at December 31, 2023. Interest income on finance lease receivables was $46 million for the year ended December 31, 2024, and $40 million for the year ended December 31, 2023, and is included in interest and fees on finance receivables and loans in our Consolidated Statement of Income. The following table presents future minimum rental payments we have the right to receive under finance leases with noncancelable lease terms expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 188 2026 159 2027 122 2028 64 2029 32 2030 and thereafter 11 Total undiscounted cash flows 576 Difference between undiscounted cash flows and discounted cash flows (80) Present value of lease payments recorded as lease receivable $ 496
Leasing	Leasing Ally as the Lessee We have operating leases for certain of our corporate facilities, which have remaining lease terms of 6 months to 6 years. Most of the property leases have fixed payment terms with annual fixed-escalation clauses and include options to extend or terminate the lease. We do not include these term extensions or termination provisions in our estimates of the lease term if we do not consider it reasonably certain that the options will be exercised. We also have operating leases for a fleet of vehicles that is used by our sales force for business purposes, with noncancelable lease terms of 367 days. Thereafter, the leases are month-to-month, up to a maximum of 48 months from inception. During the years ended December 31, 2024, and December 31, 2023, we paid $35 million and $33 million in cash for amounts included in the measurement of lease liabilities at December 31, 2024, and December 31, 2023, respectively. These amounts are included in net cash provided by operating activities in the Consolidated Statement of Cash Flows. During the years ended December 31, 2024, and December 31, 2023, we obtained $34 million and $10 million, respectively, of ROU assets in exchange for new lease liabilities. As of December 31, 2024, the weighted-average remaining lease term of our operating lease portfolio was 3 years, and the weighted-average discount rate was 3.32%, compared to 4 years and 2.85% as of December 31, 2023. The following table presents future minimum rental payments we are required to make under operating leases that have commenced as of December 31, 2024, and that have noncancelable lease terms expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 38 2026 35 2027 25 2028 17 2029 1 2030 and thereafter 1 Total undiscounted cash flows 117 Difference between undiscounted cash flows and discounted cash flows (6) Total lease liability $ 111 The following table details the components of total net operating lease expense. Year ended December 31, ($ in millions) 2024 2023 2022 Operating lease expense $ 30 $ 29 $ 33 Variable lease expense 4 5 4 Total lease expense, net (a) $ 34 $ 34 $ 37 (a) Included in other operating expenses in our Consolidated Statement of Income. Ally as the Lessor Investment in Operating Leases We purchase consumer operating lease contracts and the associated vehicles from automotive dealerships or manufacturers after those contracts are executed. The amount we pay for an operating lease contract is based on the negotiated price for the vehicle less vehicle trade-in, down payment from the consumer, tax credits, and available automotive manufacturer incentives. Under the operating lease, the consumer is obligated to make payments in amounts equal to the amount by which the negotiated purchase price of the vehicle (less any trade-in value, down payment, tax credits, or available manufacturer incentives) exceeds the contract residual value (including residual support) of the vehicle at lease termination, plus operating lease rental charges. The customer can terminate the lease at any point after commencement, subject to additional charges and fees. The consumer, dealership, or automotive manufacturer may have the option to purchase the vehicle at the end of the lease term, which generally range from 24 to 60 months, at the residual value of the vehicle, however it is not reasonably certain this option will be exercised and accordingly our consumer leases are classified as operating leases. In addition to the charges described above, the consumer is generally responsible for certain charges related to excess mileage or excessive wear and tear on the vehicle. These charges are deemed variable lease payments and, as these payments are not based on a rate or index, they are recognized as net depreciation expense on operating lease assets in our Consolidated Statement of Income as incurred. When we acquire a consumer operating lease, we assume ownership of the vehicle. We require that property damage, bodily injury, collision, and comprehensive insurance be obtained by the lessee on all consumer operating leases. Neither the consumer, dealer, nor automotive manufacturer is responsible for the value of the vehicle at the time of lease termination. When vehicles are not purchased by customers, the receiving dealer, or automotive manufacturer at scheduled lease termination, the vehicle is returned to us for remarketing. We generally bear the risk of loss to the extent the value of a leased vehicle upon remarketing is below the expected residual value after adjusting for any residual value guarantees. At termination, our actual sales proceeds from remarketing the vehicle may be higher or lower than the estimated residual value after adjusting for any residual value guarantees resulting in a gain or loss on remarketing, which is included in net depreciation expense on operating lease assets in our Consolidated Statement of Income. Excessive mileage or excessive wear and tear on the vehicle during the lease may impact the sales proceeds received upon remarketing. As of December 31, 2024, and December 31, 2023, consumer operating leases with a carrying value, net of accumulated depreciation, of $1.9 billion and $12 million, respectively, were covered by OEM residual value guarantees. The increase is primarily driven by a new automotive manufacturer relationship added during the year ended December 31, 2024. As of December 31, 2024, $1 million is under a residual value guarantee of 15% of the automotive manufacturer’s suggested retail price and $1.9 billion is under a residual value guarantee of approximately 50% of the vehicles’ contract residual value. As of December 31, 2023, $12 million was under a residual value guarantee of 15% of the automotive manufacturer’s suggested retail price. The following table details our investment in operating leases. Year ended December 31, ($ in millions) 2024 2023 Vehicles $ 9,519 $ 11,015 Accumulated depreciation (1,528) (1,930) Investment in operating leases, net $ 7,991 $ 9,085 The following table presents future minimum rental payments we have the right to receive under operating leases with noncancelable lease terms expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 1,269 2026 881 2027 369 2028 35 2029 3 Total lease payments from operating leases $ 2,557 We recognized operating lease revenue of $1.4 billion for the year ended December 31, 2024, and $1.6 billion for both of the years ended December 31, 2023, and 2022. Depreciation expense on operating lease assets includes net remarketing gains recognized on the sale of operating lease assets. The following table summarizes the components of depreciation expense on operating lease assets. Year ended December 31, ($ in millions) 2024 2023 2022 Depreciation expense on operating lease assets (excluding remarketing gains) (a) $ 868 $ 1,051 $ 1,084 Remarketing gains, net (132) (211) (170) Net depreciation expense on operating lease assets $ 736 $ 840 $ 914 (a) Includes variable lease payments related to excess mileage and excessive wear and tear on vehicles of $21 million, $9 million, and $7 million during the years ended December 31, 2024, 2023, and 2022, respectively. Finance Leases In our Automotive Finance operations, we also hold automotive leases that require finance lease treatment as prescribed by ASC Topic 842, Leases . Our total gross investment in finance leases, which is included in finance receivables and loans, net, on our Consolidated Balance Sheet was $496 million and $537 million as of December 31, 2024, and December 31, 2023, respectively. This includes lease payment receivables of $496 million and $531 million at December 31, 2024, and December 31, 2023, respectively, and unguaranteed residual assets of $6 million at December 31, 2023. Interest income on finance lease receivables was $46 million for the year ended December 31, 2024, and $40 million for the year ended December 31, 2023, and is included in interest and fees on finance receivables and loans in our Consolidated Statement of Income. The following table presents future minimum rental payments we have the right to receive under finance leases with noncancelable lease terms expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 188 2026 159 2027 122 2028 64 2029 32 2030 and thereafter 11 Total undiscounted cash flows 576 Difference between undiscounted cash flows and discounted cash flows (80) Present value of lease payments recorded as lease receivable $ 496
Leasing	Leasing Ally as the Lessee We have operating leases for certain of our corporate facilities, which have remaining lease terms of 6 months to 6 years. Most of the property leases have fixed payment terms with annual fixed-escalation clauses and include options to extend or terminate the lease. We do not include these term extensions or termination provisions in our estimates of the lease term if we do not consider it reasonably certain that the options will be exercised. We also have operating leases for a fleet of vehicles that is used by our sales force for business purposes, with noncancelable lease terms of 367 days. Thereafter, the leases are month-to-month, up to a maximum of 48 months from inception. During the years ended December 31, 2024, and December 31, 2023, we paid $35 million and $33 million in cash for amounts included in the measurement of lease liabilities at December 31, 2024, and December 31, 2023, respectively. These amounts are included in net cash provided by operating activities in the Consolidated Statement of Cash Flows. During the years ended December 31, 2024, and December 31, 2023, we obtained $34 million and $10 million, respectively, of ROU assets in exchange for new lease liabilities. As of December 31, 2024, the weighted-average remaining lease term of our operating lease portfolio was 3 years, and the weighted-average discount rate was 3.32%, compared to 4 years and 2.85% as of December 31, 2023. The following table presents future minimum rental payments we are required to make under operating leases that have commenced as of December 31, 2024, and that have noncancelable lease terms expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 38 2026 35 2027 25 2028 17 2029 1 2030 and thereafter 1 Total undiscounted cash flows 117 Difference between undiscounted cash flows and discounted cash flows (6) Total lease liability $ 111 The following table details the components of total net operating lease expense. Year ended December 31, ($ in millions) 2024 2023 2022 Operating lease expense $ 30 $ 29 $ 33 Variable lease expense 4 5 4 Total lease expense, net (a) $ 34 $ 34 $ 37 (a) Included in other operating expenses in our Consolidated Statement of Income. Ally as the Lessor Investment in Operating Leases We purchase consumer operating lease contracts and the associated vehicles from automotive dealerships or manufacturers after those contracts are executed. The amount we pay for an operating lease contract is based on the negotiated price for the vehicle less vehicle trade-in, down payment from the consumer, tax credits, and available automotive manufacturer incentives. Under the operating lease, the consumer is obligated to make payments in amounts equal to the amount by which the negotiated purchase price of the vehicle (less any trade-in value, down payment, tax credits, or available manufacturer incentives) exceeds the contract residual value (including residual support) of the vehicle at lease termination, plus operating lease rental charges. The customer can terminate the lease at any point after commencement, subject to additional charges and fees. The consumer, dealership, or automotive manufacturer may have the option to purchase the vehicle at the end of the lease term, which generally range from 24 to 60 months, at the residual value of the vehicle, however it is not reasonably certain this option will be exercised and accordingly our consumer leases are classified as operating leases. In addition to the charges described above, the consumer is generally responsible for certain charges related to excess mileage or excessive wear and tear on the vehicle. These charges are deemed variable lease payments and, as these payments are not based on a rate or index, they are recognized as net depreciation expense on operating lease assets in our Consolidated Statement of Income as incurred. When we acquire a consumer operating lease, we assume ownership of the vehicle. We require that property damage, bodily injury, collision, and comprehensive insurance be obtained by the lessee on all consumer operating leases. Neither the consumer, dealer, nor automotive manufacturer is responsible for the value of the vehicle at the time of lease termination. When vehicles are not purchased by customers, the receiving dealer, or automotive manufacturer at scheduled lease termination, the vehicle is returned to us for remarketing. We generally bear the risk of loss to the extent the value of a leased vehicle upon remarketing is below the expected residual value after adjusting for any residual value guarantees. At termination, our actual sales proceeds from remarketing the vehicle may be higher or lower than the estimated residual value after adjusting for any residual value guarantees resulting in a gain or loss on remarketing, which is included in net depreciation expense on operating lease assets in our Consolidated Statement of Income. Excessive mileage or excessive wear and tear on the vehicle during the lease may impact the sales proceeds received upon remarketing. As of December 31, 2024, and December 31, 2023, consumer operating leases with a carrying value, net of accumulated depreciation, of $1.9 billion and $12 million, respectively, were covered by OEM residual value guarantees. The increase is primarily driven by a new automotive manufacturer relationship added during the year ended December 31, 2024. As of December 31, 2024, $1 million is under a residual value guarantee of 15% of the automotive manufacturer’s suggested retail price and $1.9 billion is under a residual value guarantee of approximately 50% of the vehicles’ contract residual value. As of December 31, 2023, $12 million was under a residual value guarantee of 15% of the automotive manufacturer’s suggested retail price. The following table details our investment in operating leases. Year ended December 31, ($ in millions) 2024 2023 Vehicles $ 9,519 $ 11,015 Accumulated depreciation (1,528) (1,930) Investment in operating leases, net $ 7,991 $ 9,085 The following table presents future minimum rental payments we have the right to receive under operating leases with noncancelable lease terms expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 1,269 2026 881 2027 369 2028 35 2029 3 Total lease payments from operating leases $ 2,557 We recognized operating lease revenue of $1.4 billion for the year ended December 31, 2024, and $1.6 billion for both of the years ended December 31, 2023, and 2022. Depreciation expense on operating lease assets includes net remarketing gains recognized on the sale of operating lease assets. The following table summarizes the components of depreciation expense on operating lease assets. Year ended December 31, ($ in millions) 2024 2023 2022 Depreciation expense on operating lease assets (excluding remarketing gains) (a) $ 868 $ 1,051 $ 1,084 Remarketing gains, net (132) (211) (170) Net depreciation expense on operating lease assets $ 736 $ 840 $ 914 (a) Includes variable lease payments related to excess mileage and excessive wear and tear on vehicles of $21 million, $9 million, and $7 million during the years ended December 31, 2024, 2023, and 2022, respectively. Finance Leases In our Automotive Finance operations, we also hold automotive leases that require finance lease treatment as prescribed by ASC Topic 842, Leases . Our total gross investment in finance leases, which is included in finance receivables and loans, net, on our Consolidated Balance Sheet was $496 million and $537 million as of December 31, 2024, and December 31, 2023, respectively. This includes lease payment receivables of $496 million and $531 million at December 31, 2024, and December 31, 2023, respectively, and unguaranteed residual assets of $6 million at December 31, 2023. Interest income on finance lease receivables was $46 million for the year ended December 31, 2024, and $40 million for the year ended December 31, 2023, and is included in interest and fees on finance receivables and loans in our Consolidated Statement of Income. The following table presents future minimum rental payments we have the right to receive under finance leases with noncancelable lease terms expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 188 2026 159 2027 122 2028 64 2029 32 2030 and thereafter 11 Total undiscounted cash flows 576 Difference between undiscounted cash flows and discounted cash flows (80) Present value of lease payments recorded as lease receivable $ 496

Securitizations and Variable In

Securitizations and Variable Interest Entities	12 Months Ended
	Dec. 31, 2024
Securitizations And Variable Interest Entities [Abstract]
Securitizations and Variable Interest Entities	Securitizations and Variable Interest Entities Overview We securitize, transfer, and service consumer automotive loans. We often securitize these loans (also referred to as financial assets) using SPEs. An SPE is a legal entity that is designed to fulfill a specified limited need of the sponsor. Our principal use of SPEs is to obtain liquidity by securitizing certain of our financial assets. SPEs are often VIEs and may or may not be included on our Consolidated Balance Sheet. Additionally, we opportunistically sell consumer automotive and credit card whole-loans to SPEs where we have a continuing involvement. Securitizations In executing a securitization, we typically sell pools of financial assets to a wholly owned, bankruptcy-remote SPE, which then transfers the financial assets to a separate, transaction-specific SPE for cash, and typically, other retained interests. The SPE is funded through the issuance of beneficial interests, which could take the form of notes or residual interests and can be sold to investors or retained by us. We typically hold retained beneficial interests in our securitizations including, but not limited to, retained notes, certificated residual interests, as well as certain noncertificated interests retained from the sale of automotive finance receivables. If sold, the beneficial interests only entitle the investors to specified cash flows generated from the underlying securitized assets. If retained, the interests provide credit enhancement to the SPE as they may absorb credit losses or other cash shortfalls and may represent a form of significant continuing economic interests. In addition to providing a source of liquidity and cost-efficient funding, securitizing these financial assets also reduces our credit exposure to the borrowers beyond any economic interest we may retain. The SPEs are limited to specific activities by their respective legal documents, but are generally allowed to acquire the financial assets, to issue beneficial interests to investors to fund the acquisition of the financial assets, and to enter into interest rate hedges to mitigate certain risks related to the financial assets or beneficial interests of the entity. A servicer, who is generally us, is appointed pursuant to the underlying legal documents to service the assets the SPE holds and the beneficial interests it issues. Servicing functions include, but are not limited to, general collections activity on current and noncurrent accounts, loss mitigation efforts including repossession and sale of collateral, as well as preparing and furnishing statements summarizing the asset and beneficial interest performance. These servicing responsibilities constitute continued involvement in the transferred financial assets. Cash flows from the securitized financial assets represent the sole source for payment of distributions on the beneficial interests issued by the SPE and for payments to the parties that perform services for the SPE, such as the servicer or the trustee. We generally hold certain conditional repurchase options specific to securitizations that allow us to repurchase assets from the securitization entity. The majority of the securitizations provide us, as servicer, with a call option that allows us to repurchase the remaining transferred financial assets or redeem outstanding beneficial interests at our discretion once the asset pool reaches a predefined level, which represents the point where servicing becomes administratively burdensome (a clean-up call option). The repurchase price is typically the securitization balance of the assets plus accrued interest when applicable. We generally have discretion regarding when or if we will exercise these options, but we would do so only when it is in our best interest. Other than our customary representation, warranty, and covenant provisions, these securitizations are nonrecourse to us, thereby transferring the risk of future credit losses to the extent the beneficial interests in the SPEs are held by third parties. Representation, warranty, and certain covenant provisions generally require us to repurchase assets or indemnify the investor or other party for incurred losses to the extent it is determined that the assets were ineligible or were otherwise defective at the time of sale, or otherwise not in compliance with the ongoing covenant obligations. We did not provide any noncontractual financial support to any of these entities during 2024, 2023, or 2022. Variable Interest Entities The VIEs included on the Consolidated Balance Sheet represent SPEs where we are deemed to be the primary beneficiary, primarily due to our servicing activities and our beneficial interests in the VIE that could be potentially significant. We determine whether we have a potentially significant beneficial interest in the VIE based on the consideration of both qualitative and quantitative factors regarding the nature, size, and form of our involvement in the VIE. The third-party investors in the obligations of consolidated VIEs have legal recourse only to the assets of the VIEs and do not have such recourse to us, except for the customary representation, warranty, and covenant provisions. In addition, the cash flows from the assets are restricted only to pay such liabilities. Thus, our economic exposure to loss from outstanding third-party financing related to consolidated VIEs is limited to the carrying value of the consolidated VIE assets. Generally, all assets of consolidated VIEs are restricted for the beneficial interest holders. For additional information regarding our significant accounting policies for consolidated VIEs, refer to the Variable Interest Entities and Securitizations section of Note 1. The nature, purpose, and activities of nonconsolidated SPEs are similar to those of our consolidated SPEs with the primary difference being the nature and extent of our continuing involvement. For nonconsolidated SPEs, the transferred financial assets are removed from our balance sheet provided the conditions for sale accounting are met. The financial assets obtained from the sale are primarily reported as cash or retained interests (if applicable). Liabilities incurred as part of these sales, are recorded at fair value at the time of sale and are reported as accrued expenses and other liabilities on our Consolidated Balance Sheet. Upon the sale of the loans, we recognize a gain or loss on sale for the difference between the assets recognized, the assets derecognized, and the liabilities recognized as part of the transaction. With respect to our ongoing right to service the assets we sell, the servicing fee we receive represents adequate compensation, and consequently, we do not recognize a servicing asset or liability. The pretax gain on sales of financial assets into nonconsolidated VIEs was $3 million during the year ended December 31, 2024, and $1 million for both the years ended December 31, 2023, and 2022. For additional information regarding our significant accounting policies for nonconsolidated VIEs, refer to the Variable Interest Entities and Securitizations section of Note 1. We provide long-term guarantee contracts to investors in certain nonconsolidated affordable housing entities and have extended a line of credit to provide liquidity. Since we do not have control over the entities or the power to make decisions, we do not consolidate the entities and our involvement is limited to the guarantee and the line of credit. We are involved with various other nonconsolidated equity investments, including affordable housing entities and venture capital funds and loan funds. We do not consolidate these entities and our involvement is limited to our outstanding investment, additional capital committed to these funds plus any previously recognized LIHTCs that are subject to recapture. The following table presents our involvement in consolidated and nonconsolidated VIEs in which we hold variable interests. We have excluded certain transactions with nonconsolidated entities from the balances presented in the table below, where our only continuing involvement relates to financial interests obtained through the ordinary course of business, primarily from lending and investing arrangements. For additional detail related to the assets and liabilities of consolidated variable interest entities, refer to the Consolidated Balance Sheet. December 31, ($ in millions) Carrying value of total assets Carrying value of total liabilities Assets sold to nonconsolidated VIEs (a) Maximum exposure to loss in nonconsolidated VIEs 2024 On‑balance sheet variable interest entities Consumer automotive $ 12,821 (b) $ 1,683 (c) $ — $ — Off-balance sheet variable interest entities Consumer automotive (d) 92 (e) — 2,885 2,977 (f) Consumer other (g) — — 86 86 Commercial other 2,768 (h) 1,022 (i) — 3,482 (j) Total $ 15,681 $ 2,705 $ 2,971 $ 6,545 2023 On-balance sheet variable interest entities Consumer automotive $ 16,329 (b) $ 1,614 (c) $ — $ — Off-balance sheet variable interest entities Consumer automotive (d) 81 (e) — 2,514 2,595 (f) Consumer other (g) — — 125 125 Commercial other 2,516 (h) 974 (i) — 2,738 (j) Total $ 18,926 $ 2,588 $ 2,639 $ 5,458 (a) Asset values represent the current unpaid principal balance of outstanding consumer automotive and credit card finance receivables and loans within the VIEs. (b) Includes $8.2 billion and $9.3 billion of assets that were not encumbered by VIE beneficial interests held by third parties at December 31, 2024, and December 31, 2023, respectively. Ally or consolidated affiliates hold the interests in these assets. (c) Includes $118 million and $100 million of liabilities that were not obligations to third-party beneficial interest holders at December 31, 2024, and December 31, 2023, respectively. (d) Includes activity where we sell loans through a pass-through program to a third party. (e) Represents retained notes and certificated residual interests, of which $88 million and $78 million were classified as held-to-maturity securities at December 31, 2024, and December 31, 2023, respectively, and $4 million and $3 million were classified as other assets at December 31, 2024, and December 31, 2023, respectively. These assets represent our compliance with the risk retention rules under the Dodd-Frank Act, requiring us to retain at least five percent of the credit risk of the assets underlying asset-backed securitizations. (f) Maximum exposure to loss represents the current unpaid principal balance of outstanding loans based on our customary representation and warranty provisions. This measure is based on the unlikely event that all the loans have underwriting defects or other defects that trigger a representation and warranty provision and the collateral supporting the loans are worthless. This required disclosure is not an indication of our expected loss. (g) Represents balances from Ally Credit Card. (h) Amounts are classified as other assets except for $50 million and $44 million classified as equity securities at December 31, 2024, and December 31, 2023, respectively. (i) Amounts are classified as accrued expenses and other liabilities. (j) For certain nonconsolidated affordable housing entities, maximum exposure to loss represents the yield we guaranteed investors through long-term guarantee contracts. The amount disclosed is based on the unlikely event that the yield delivered to investors in the form of LIHTCs is recaptured. For nonconsolidated equity investments, maximum exposure to loss represents our outstanding investment, additional committed capital, and LIHTCs subject to recapture. The amount disclosed is based on the unlikely event that our committed capital is funded, our investments become worthless, and the tax credits previously delivered to us are recaptured. This required disclosure is not an indication of our expected loss. Cash Flows with Nonconsolidated Special-Purpose Entities The following table summarizes cash flows received and paid related to SPEs and asset-backed financings where the transfer is accounted for as a sale and we have a continuing involvement with the transferred consumer automotive and credit card assets (for example, servicing) that were outstanding during the years ended December 31, 2024, 2023, and 2022. Additionally, this table contains information regarding cash flows received from and paid to nonconsolidated SPEs that existed during each period. Year ended December 31, ($ in millions) 2024 2023 2022 Consumer automotive Cash proceeds from transfers completed during the period $ 1,594 $ 1,131 $ 238 Servicing fees 58 19 1 Cash flows received on retained interests in securitization entities 54 4 — Other cash flows 2 1 — Cash disbursements for repurchases during the period 1 — — Consumer other (a) Cash proceeds from transfers completed during the period 46 117 137 Servicing fees 6 8 13 Total $ 1,761 $ 1,280 $ 389 (a) Represents activity from Ally Credit Card. Delinquencies and Net Credit Losses The following tables present quantitative information about off-balance sheet securitizations and whole-loan sales where we have continuing involvement. Total amount Amount 60 days or more past due December 31, ($ in millions) 2024 2023 2024 2023 Off-balance-sheet securitization entities Consumer automotive $ 1,730 $ 1,558 $ 22 $ 11 Whole-loan sales (a) Consumer automotive 1,155 956 83 44 Consumer other 86 125 10 17 Total $ 2,971 $ 2,639 $ 115 $ 72 (a) Whole-loan sales are not part of a securitization transaction, but represent consumer automotive and credit card pools of loans sold to third-party investors. Net credit losses Year ended December 31, ($ in millions) 2024 2023 Off-balance-sheet securitization entities Consumer automotive $ 20 $ 2 Whole-loan sales (a) Consumer automotive 79 27 Consumer other 36 31 Total $ 135 $ 60 (a) Whole-loan sales are not part of a securitization transaction, but represent consumer automotive and credit card pools of loans sold to third-party investors. Affordable Housing Investments We have investments in various limited partnerships that sponsor affordable housing projects, which meet the definition of a VIE. The purpose of these investments is to achieve a satisfactory return on capital through the receipt of LIHTC and to assist us in achieving goals associated with the CRA. Our affordable housing investments are accounted for using the proportional amortization method of accounting, which recognizes the amortized cost of the investment as a component of income tax expense. Refer to Note 13 for more information on our proportional amortization investments.

Premiums Receivable and Other I

Premiums Receivable and Other Insurance Assets	12 Months Ended
	Dec. 31, 2024
Premiums Receivable Disclosure [Abstract]
Premiums Receivable and Other Insurance Assets	Premiums Receivable and Other Insurance Assets Premiums receivable and other insurance assets consisted of the following. December 31, ($ in millions) 2024 2023 Prepaid reinsurance premiums $ 594 $ 580 Reinsurance recoverable on unpaid losses 60 66 Reinsurance recoverable on paid losses 44 38 Premiums receivable 206 154 Deferred policy and service contract acquisition costs 1,886 1,911 Total premiums receivable and other insurance assets $ 2,790 $ 2,749

Other Assets

Other Assets	12 Months Ended
	Dec. 31, 2024
Other Assets [Abstract]
Other Assets	Other Assets The components of other assets were as follows. December 31, ($ in millions) 2024 2023 Property and equipment at cost $ 2,226 $ 2,153 Accumulated depreciation (973) (871) Net property and equipment 1,253 1,282 Proportional amortization investments (a) (b) 2,131 1,866 Net deferred tax assets 1,916 1,247 Accrued interest, fees, and rent receivables (c) 929 935 Nonmarketable equity investments 789 886 Restricted cash and cash equivalents (d) 788 87 Equity-method investments (a) (e) 632 651 Goodwill 551 669 Other accounts receivable 312 189 Restricted cash held for securitization trusts (f) 300 407 Operating lease right-of-use assets 92 90 Net intangible assets 54 73 Other assets 913 1,036 Total other assets (g) $ 10,660 $ 9,418 (a) Proportional amortization investments includes qualifying LIHTC, NMTC, and HTC investments as of December 31, 2024. Prior to the adoption of ASU 2023-02 on January 1, 2024, NMTC and HTC investments were included in equity-method investments. Refer to Note 1 for additional information. (b) Presented gross of the associated unfunded commitment. Refer to Note 16 for further information. (c) Primarily relates to accrued interest, fees, and rent receivables related to our consumer automotive and commercial automotive finance receivables and loans. (d) Primarily represents restricted cash equivalents funded through the issuance of credit-linked notes. Additionally, includes a number of arrangements with third parties where certain restrictions are placed on balances we hold due to collateral agreements associated with operational processes with a third-party bank, partner, or letter of credit arrangements and corresponding collateral requirements. Refer to Note 20 for further information about the issuance of credit-linked notes. (e) Primarily relates to investments made in connection with our CRA program. (f) Includes restricted cash collected from customer payments on securitized receivables, which are distributed by us to investors as payments on the related secured debt, and cash reserve deposits utilized as a form of credit enhancement for various securitization transactions. (g) Excludes Ally Lending other assets which were transferred to assets of operations held-for-sale as of December 31, 2023. We closed the sale of Ally Lending on March 1, 2024. Refer to Note 2 for additional information. We elected to apply the proportional amortization method to qualifying tax equity investments within our LIHTC, NMTC, and HTC programs upon adoption of ASU 2023-02 on January 1, 2024. Prior to adoption, the proportional amortization method applied to our qualifying LIHTC investments only. Refer to Note 1 for additional information. The following table summarizes information about our proportional amortization investments. Year ended December 31, ($ in millions) 2024 2023 2022 Tax credits and other tax benefits from proportional amortization investments (a) (b) $ 251 $ 200 $ 177 Investment amortization expense recognized as a component of income tax expense (a) 203 157 147 Net benefit from proportional amortization investments (a) $ 48 $ 43 $ 30 (a) Amounts are included within income tax expense deferred income taxes, other assets, and other liabilities (b) There were no impairment losses recognized during the years ended December 31, 2024, 2023, and 2022, resulting from the forfeiture or ineligibility of tax credits or other circumstances. Our proportional amortization investments were $2.1 billion and $1.9 billion at December 31, 2024, and December 31, 2023, respectively, and are included within other assets on our Consolidated Balance Sheet. Additionally, unfunded commitments to provide additional capital to proportional amortization investments were $1.0 billion and $973 million at December 31, 2024, and December 31, 2023, respectively, and are included within accrued expenses and other liabilities on our Consolidated Balance Sheet. Substantially all of the unfunded commitments at December 31, 2024, are expected to be paid out within the next five years. The total carrying value of the nonmarketable equity investments held at December 31, 2024, and December 31, 2023, including cumulative unrealized gains and losses, was as follows. December 31, ($ in millions) 2024 2023 FRB stock $ 440 $ 392 FHLB stock 258 392 Equity investments without a readily determinable fair value Cost basis 74 74 Adjustments Upward adjustments 53 51 Downward adjustments (including impairment) (36) (23) Carrying amount, equity investments without a readily determinable fair value 91 102 Nonmarketable equity investments $ 789 $ 886 During the years ended December 31, 2024, and 2023, unrealized gains and losses included in the carrying value of the nonmarketable equity investments still held as of December 31, 2024, and 2023, were as follows. Year ended December 31, ($ in millions) 2024 2023 Upward adjustments $ 2 $ 8 Downward adjustments (including impairment) (a) $ (15) $ (17) (a) No impairment on FHLB and FRB stock was recognized during both years ended December 31, 2024, and 2023. Total loss on nonmarketable equity investments, net, which includes both realized and unrealized gains and losses, was a net loss of $6 million for the year ended December 31, 2024, compared to a net loss of $10 million for the year ended December 31, 2023. The carrying balance of goodwill by reportable operating segment was as follows. ($ in millions) Automotive Finance operations Insurance operations Corporate and Other (a) Total Goodwill at December 31, 2022 $ 20 $ 27 $ 775 $ 822 Goodwill impairment — — (149) (149) Transfer to assets of operations held-for-sale — — (4) (4) Goodwill at December 31, 2023 $ 20 $ 27 $ 622 $ 669 Goodwill impairment — — (118) (118) Goodwill at December 31, 2024 $ 20 $ 27 $ 504 $ 551 (a) Includes $361 million and $479 million of goodwill associated with Ally Credit Card at December 31, 2024, and December 31, 2023, respectively, and $143 million of goodwill associated with Ally Invest at both December 31, 2024, and December 31, 2023. During the year ended December 31, 2024, we recognized a $118 million impairment of goodwill at Corporate and Other related to Ally Credit Card. During the fourth quarter of 2024, we began exploring strategic alternatives for our credit card business, which resulted in a triggering event for goodwill impairment. As a result, we performed a quantitative impairment test using a combination of valuation methodologies, including an income approach and a market approach, to determine the fair market value of Ally Credit Card as of the valuation date, November 30, 2024, which resulted in the impairment charge in the fourth quarter of 2024. During the year ended December 31, 2023, we recognized a $149 million impairment of goodwill at Corporate and Other related to the transfer of Ally Lending to held-for-sale. Subsequent to the impairment charge, the goodwill balance of $4 million was transferred to assets of operations held-for-sale on the Consolidated Balance Sheet. We closed the sale of Ally Lending on March 1, 2024. For additional information, refer to Note 2. The net carrying value of intangible assets by class was as follows. 2024 2023 December 31, ($ in millions) Gross intangible assets Accumulated amortization Net carrying value Gross intangible assets Accumulated amortization Net carrying value Technology $ 117 $ (77) $ 40 $ 117 $ (64) $ 53 Customer lists 41 (41) — 41 (39) 2 Purchased credit card relationships 25 (11) 14 25 (7) 18 Trademarks 2 (2) — 2 (2) — Total intangible assets (a) $ 185 $ (131) $ 54 $ 185 $ (112) $ 73 (a) Excludes $22 million of gross intangible assets and $22 million of accumulated amortization that were transferred to assets of operations held-for-sale related to Ally Lending as of December 31, 2023. The sale was closed on March 1, 2024. Refer to Note 2 for additional information. Estimated future amortization expense of intangible assets are as follows. Year ended December 31, ($ in millions) 2025 $ 14 2026 14 2027 13 2028 13 Total estimated future amortization expense $ 54

Deposit Liabilities

Deposit Liabilities	12 Months Ended
	Dec. 31, 2024
Deposits [Abstract]
Deposit Liabilities	Deposit Liabilities Deposit liabilities consisted of the following. December 31, ($ in millions) 2024 2023 Noninterest-bearing deposits $ 131 $ 139 Interest-bearing deposits Savings, money market, and spending accounts 104,201 99,340 Certificates of deposit 47,242 55,187 Total deposit liabilities $ 151,574 $ 154,666 At December 31, 2024, and December 31, 2023, certificates of deposit included $6.8 billion and $7.7 billion, respectively, of those in denominations in excess of $250 thousand. The following table presents the scheduled maturity of total certificates of deposit at December 31, 2024. ($ in millions) Due in 2025 $ 37,228 Due in 2026 5,487 Due in 2027 2,285 Due in 2028 1,582 Due in 2029 660 Total certificates of deposit (a) $ 47,242 (a) Includes $4.8 billion of certificates of deposit that are estimated to be uninsured. In some instances, certificates of deposits in excess of federal insurance limits may be insured based upon the number of account owners, beneficiaries, and accounts held.

Debt

Debt	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
Debt	Debt Short-Term Borrowings The following table presents the composition of our short-term borrowings portfolio. 2024 2023 December 31, ($ in millions) Unsecured Secured (a) Total Unsecured Secured (a) Total Federal Home Loan Bank $ — $ 1,625 $ 1,625 $ — $ 2,550 $ 2,550 Securities sold under agreements to repurchase — — — — 747 747 Total short-term borrowings $ — $ 1,625 $ 1,625 $ — $ 3,297 $ 3,297 Weighted average interest rate (b) 4.7 % 5.6 % (a) Refer to the section below titled Long-Term Debt for further details on assets restricted as collateral for payment of the related debt. (b) Based on the debt outstanding and the interest rate at December 31, of each year. We periodically enter into term repurchase agreements—short-term borrowing agreements in which we sell securities to one or more investors while simultaneously committing to repurchase them at a specified future date, at the stated price plus accrued interest. We had no securities sold under agreements to repurchase as of December 31, 2024. The primary risk associated with these repurchase agreements is that the counterparty will be unable to perform under the terms of the contract. As the borrower, we are exposed to the excess market value of the securities pledged over the amount borrowed. Daily mark-to-market collateral management is designed to limit this risk to the initial margin. However, should a counterparty declare bankruptcy or become insolvent, we may incur additional delays and costs. In some instances, we may place or receive cash collateral with counterparties under collateral arrangements associated with our repurchase agreements. At December 31, 2023, we received cash collateral of $6 million and non-cash collateral of $1 million related to repurchase agreements. Long-Term Debt The following table presents the composition of our long-term debt portfolio. December 31, ($ in millions) Amount Interest rate Weighted average stated interest rate (a) Due date range 2024 Unsecured debt Fixed rate (b) $ 10,974 Hedge basis adjustments (c) 88 Total unsecured debt 11,062 1.15–8.00% 6.25 % 2025–2040 Secured debt Fixed rate 6,358 Variable rate (d) 75 Total secured debt (e) (f) 6,433 1.96–12.75% 4.32 % 2025–2032 Total long-term debt $ 17,495 2023 Unsecured debt Fixed rate (b) $ 10,327 Hedge basis adjustments (c) 97 Total unsecured debt 10,424 0.60–8.00% 6.03 % 2024–2033 Secured debt Fixed rate 7,031 Variable rate (d) 113 Hedge basis adjustment (c) 2 Total secured debt (e) (f) 7,146 0.89–5.29% 3.31 % 2024–2031 Total long-term debt $ 17,570 (a) Based on the debt outstanding and the interest rate at December 31 of each year excluding any impacts of interest rate hedges. (b) Includes subordinated debt of $2.0 billion and $1.5 billion at December 31, 2024, and 2023, respectively. (c) Represents the basis adjustment associated with the application of hedge accounting on certain of our long-term debt positions. Refer to Note 21 for additional information. (d) Represents long-term debt that does not have a stated interest rate. (e) Includes $1.6 billion and $1.5 billion of VIE secured debt at December 31, 2024, and 2023, respectively. (f) Includes advances from the FHLB of Pittsburgh of $4.2 billion and $5.6 billion at December 31, 2024, and 2023, respectively. 2024 2023 December 31, ($ in millions) Unsecured Secured Total Unsecured Secured Total Long-term debt (a) Due within one year $ 2,408 $ 2,411 $ 4,819 $ 1,409 $ 2,931 $ 4,340 Due after one year 8,654 4,022 12,676 9,015 4,215 13,230 Total long-term debt $ 11,062 $ 6,433 $ 17,495 $ 10,424 $ 7,146 $ 17,570 (a) Includes basis adjustments related to the application of hedge accounting. Refer to Note 21 for additional information. The following table presents the scheduled remaining maturity of long-term debt at December 31, 2024, assuming no early redemptions will occur. The amounts below include adjustments to the carrying value resulting from the application of hedge accounting. The actual payment of secured debt may vary based on the payment activity of the related pledged assets. ($ in millions) 2025 2026 2027 2028 2029 2030 and thereafter Total Unsecured Long-term debt $ 2,482 $ 151 $ 1,622 $ 865 $ 1,029 $ 5,676 $ 11,825 Original issue discount (74) (82) (94) (107) (123) (283) (763) Total unsecured 2,408 69 1,528 758 906 5,393 11,062 Secured Long-term debt 2,410 2,159 1,407 399 39 19 6,433 Total long-term debt $ 4,818 $ 2,228 $ 2,935 $ 1,157 $ 945 $ 5,412 $ 17,495 The following table summarizes assets restricted as collateral for the payment of the related debt obligation. December 31, ($ in millions) 2024 2023 Consumer automotive finance receivables $ 38,316 $ 40,805 Consumer mortgage finance receivables 17,269 18,703 Commercial finance receivables 6,297 5,968 Investment securities (amortized cost of $2,822 and $4,030) (a) 2,946 4,036 Other assets (b) 669 — Total assets restricted as collateral (c) (d) $ 65,497 $ 69,512 Secured debt (e) $ 8,058 $ 10,443 (a) A portion of the restricted investment securities at December 31, 2023, was restricted under repurchase agreements. Refer to the section above titled Short-Term Borrowings for information on the repurchase agreements. (b) Includes the collateral accounts restricted for the payment of credit-linked notes recorded within restricted cash and cash equivalents. Excludes restricted cash and cash reserves for securitization trusts. Refer to Note 13 and Note 20 for additional information. (c) All restricted assets are those of Ally Bank. (d) Ally Bank has an advance agreement with the FHLB, and had assets pledged to secure borrowings that were restricted as collateral to the FHLB totaling $26.5 billion and $27.9 billion at December 31, 2024, and December 31, 2023, respectively. These assets were primarily composed of consumer mortgage finance receivables and loans as well as mortgage-backed securities. Ally Bank has access to the FRB Discount Window and had assets pledged and restricted as collateral to the FRB totaling $33.8 billion and $34.0 billion at December 31, 2024, and December 31, 2023, respectively. These assets were composed of consumer automotive finance receivables and loans. Availability under these programs is only for the operations of Ally Bank and cannot be used to fund the operations or liabilities of Ally or its other subsidiaries. (e) Includes $1.6 billion and $3.3 billion of short-term borrowings at December 31, 2024 , and December 31, 2023, respectively.

Accrued Expenses and Other Liab

Accrued Expenses and Other Liabilities	12 Months Ended
	Dec. 31, 2024
Accounts Payable and Accrued Liabilities [Abstract]
Accrued Expenses and Other Liabilities	Accrued Expenses and Other Liabilities The components of accrued expenses and other liabilities were as follows. December 31, ($ in millions) 2024 2023 Unfunded commitments for proportional amortization investments (a) $ 1,019 $ 973 Accounts payable 505 509 Employee compensation and benefits 424 409 Reserves for insurance losses and loss adjustment expenses (b) 189 140 Deferred revenue 122 103 Operating lease liabilities 111 113 Other liabilities 444 479 Total accrued expenses and other liabilities (c) $ 2,814 $ 2,726 (a) Primarily relates to unfunded commitments for investments in qualified affordable housing projects. (b) Refer to Note 6 for further information. (c) Excludes Ally Lending accrued expenses and other liabilities, which were transferred to liabilities of operations held-for-sale as of December 31, 2023. We closed the sale of Ally Lending on March 1, 2024. Refer to Note 2 for additional information.

Equity

Equity	12 Months Ended
	Dec. 31, 2024
Equity [Abstract]
Equity	Equity Common Stock The following table presents changes in the number of shares issued and outstanding. (shares in thousands) (a) 2024 2023 2022 Common stock Total issued at January 1, 511,861 507,683 504,522 New issuances Employee benefits and compensation plans 3,916 4,179 3,161 Total issued at December 31, 515,778 511,861 507,683 Treasury balance at January 1, (209,402) (208,358) (166,581) Repurchase of common stock (b) (988) (1,044) (41,778) Total treasury stock at December 31, (210,390) (209,402) (208,358) Total outstanding at December 31, 305,388 302,459 299,324 (a) Figures in the table may not recalculate exactly due to rounding. Number of shares issued, in treasury, and outstanding are calculated based on unrounded numbers. (b) Includes shares of common stock withheld to cover income taxes owed by participants in our share-based incentive plans. Refer to the section titled Capital Planning and Stress Tests in Note 20 for additional information regarding our common stock-repurchase program. Preferred Stock Series B Preferred Stock In April 2021, we issued 1,350,000 shares of 4.700% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series B, with $0.01 par value and liquidation preference of $1,000 per share. Proceeds from the offering were used to redeem a portion of our 8.125% Fixed Rate/Floating Rate Trust Preferred Securities, Series 2 of GMAC Capital Trust I. Dividends on shares of the Series B Preferred Stock are discretionary and are not cumulative. Holders of the Series B Preferred Stock will be entitled to receive, if, when and as declared by our Board, or a duly authorized committee of the Board, out of legally available assets, non-cumulative cash dividends quarterly in arrears on February 15, May 15, August 15 and November 15 of each year, beginning on August 15, 2021. Dividends will accrue (i) from the date of original issue to, but excluding, May 15, 2026, at a fixed rate of 4.700% per annum and (ii) from, and including, May 15, 2026, during each five-year reset period, at a rate per annum equal to the five-year treasury rate as of the most recent reset dividend determination date plus 3.868% on the liquidation preference amount of $1,000 per share. So long as any share of Series B Preferred Stock remains outstanding, unless the dividends for the most recently completed dividend period have been paid in full, or set aside for payment, on all outstanding shares of Series B Preferred Stock, we will be prohibited, subject to certain specified exceptions, from (i) declaring or paying any dividends or making any distributions with respect to any stock that ranks on a parity basis with, or junior in interest to, the Series B Preferred Stock or (ii) repurchasing, redeeming, or otherwise acquiring for consideration, directly or indirectly, any stock that ranks on a parity basis with, or junior in interest to, the Series B Preferred Stock. The holders of the Series B Preferred Stock do not have voting rights other than those set forth in the certificate of designations for the Series B Preferred Stock included in Ally’s Certificate of Incorporation. The Series B Preferred Stock does not have a stated maturity date, and will be perpetual unless redeemed at Ally’s option. Ally is not required to redeem the Series B Preferred Stock and holders of the Series B Preferred Stock have no right to require Ally to redeem their shares. Ally may, at its option, redeem the shares of Series B Preferred stock (i) in whole or in part, on any dividend payment date on or after May 15, 2026, or (ii) in whole, but not in part, at any time within 90 days following a regulatory capital treatment event. In the event of any liquidation, dissolution or winding up of the affairs of Ally, holders of the Series B Preferred Stock will be entitled to receive the liquidation amount per share of Series B Preferred Stock and an amount equal to all declared, but unpaid dividends declared prior to the date of payment out of assets available for distribution, before any distribution is made for holders of stock that ranks junior in interest to the Series B Preferred Stock, subject to the rights of Ally’s creditors. Series C Preferred Stock In June 2021, we issued 1,000,000 shares of 4.700% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series C, with $0.01 par value and liquidation preference of $1,000 per share. Proceeds from the offering were used to redeem a portion of our 8.125% Fixed Rate/Floating Rate Trust Preferred Securities, Series 2 of GMAC Capital Trust I. Dividends on shares of the Series C Preferred Stock are discretionary and are not cumulative. Holders of the Series C Preferred Stock will be entitled to receive, if, when and as declared by our Board, or a duly authorized committee of the Board, out of legally available assets, non-cumulative cash dividends quarterly in arrears on February 15, May 15, August 15 and November 15 of each year, beginning on August 15, 2021. Dividends will accrue (i) from the date of original issue to, but excluding, May 15, 2028, at a fixed rate of 4.700% per annum and (ii) from, and including, May 15, 2028, during each seven-year reset period, at a rate per annum equal to the seven-year treasury rate as of the most recent reset dividend determination date plus 3.481% on the liquidation preference amount of $1,000 per share. So long as any share of Series C Preferred Stock remains outstanding, unless the dividends for the most recently completed dividend period have been paid in full, or set aside for payment, on all outstanding shares of Series C Preferred Stock, we will be prohibited, subject to certain specified exceptions, from (i) declaring or paying any dividends or making any distributions with respect to any stock that ranks on a parity basis with, or junior in interest to, the Series C Preferred Stock or (ii) repurchasing, redeeming, or otherwise acquiring for consideration, directly or indirectly, any stock that ranks on a parity basis with, or junior in interest to, the Series C Preferred Stock. The holders of the Series C Preferred Stock do not have voting rights other than those set forth in the certificate of designations for the Series C Preferred Stock included in Ally’s Certificate of Incorporation. The Series C Preferred Stock does not have a stated maturity date, and will be perpetual unless redeemed at Ally’s option. Ally is not required to redeem the Series C Preferred Stock and holders of the Series C Preferred Stock have no right to require Ally to redeem their shares. Ally may, at its option, redeem the shares of Series C Preferred stock (i) in whole or in part, on any dividend payment date on or after May 15, 2028, or (ii) in whole, but not in part, at any time within 90 days following a regulatory capital treatment event. In the event of any liquidation, dissolution or winding up of the affairs of Ally, holders of the Series C Preferred Stock will be entitled to receive the liquidation amount per share of Series C Preferred Stock and an amount equal to all declared, but unpaid dividends declared prior to the date of payment out of assets available for distribution, before any distribution is made for holders of stock that ranks junior in interest to the Series C Preferred Stock, subject to the rights of Ally’s creditors. The following table summarizes information about our preferred stock. December 31, 2024 2023 Series B preferred stock (a) Issuance date April 22, 2021 April 22, 2021 Carrying value ($ in millions) $ 1,335 $ 1,335 Par value (per share) $ 0.01 $ 0.01 Liquidation preference (per share) $ 1,000 $ 1,000 Number of shares authorized 1,350,000 1,350,000 Number of shares issued and outstanding 1,350,000 1,350,000 Dividend/coupon Prior to May 15, 2026 4.700% 4.700% On and after May 15, 2026 Five Year Treasury + 3.868% Five Year Treasury + 3.868% Series C preferred stock (a) Issuance date June 2, 2021 June 2, 2021 Carrying value ($ in millions) $ 989 $ 989 Par value (per share) $ 0.01 $ 0.01 Liquidation preference (per share) $ 1,000 $ 1,000 Number of shares authorized 1,000,000 1,000,000 Number of shares issued and outstanding 1,000,000 1,000,000 Dividend/coupon Prior to May 15, 2028 4.700% 4.700% On and after May 15, 2028 Seven Year Treasury + 3.481% Seven Year Treasury + 3.481% (a) We may, at our option, redeem the Series B and Series C shares on any dividend payment date on or after May 15, 2026, or May 15, 2028, respectively, or at any time within 90 days following a regulatory event that precludes the instruments from being included in additional Tier 1 capital.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2024
Equity [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss The following table presents changes, net of tax, in each component of accumulated other comprehensive loss. Investment securities (a) ($ in millions) Available- Held-to-maturity securities Translation adjustments and net investment hedges (c) Cash flow hedges (c) Defined benefit pension plans Accumulated other comprehensive loss Balance at January 1, 2022 $ (95) $ — $ 19 $ 35 $ (117) $ (158) Net change (4,000) — (1) (17) 117 (3,901) Balance at December 31, 2022 (4,095) — 18 18 — (4,059) Net change 949 (682) 3 (27) — 243 Balance at December 31, 2023 (3,146) (682) 21 (9) — (3,816) Net change (161) 66 (1) (12) — (108) Balance at December 31, 2024 $ (3,307) $ (616) $ 20 $ (21) $ — $ (3,924) (a) For additional information on the securities transferred from available-for-sale to held-to-maturity during 2023, refer to Note 8. (b) Represents the after-tax difference between the fair value and amortized cost of our available-for-sale securities portfolio. Refer to Note 8 for additional information. (c) For additional information on derivative instruments and hedging activities, refer to Note 21. Our qualified defined benefit pension plan was frozen in 2006. During 2022, we executed our plan to settle the liability in two phases: (1) a single, lump-sum payment window program; and (2) the purchase of an annuity contract from an independent insurance company for the remainder of the liability. The independent insurance company assumed the obligation to pay the outstanding accrued benefits to the participants and beneficiaries of the plan. During the year ended December 31, 2022, we realized a loss of $115 million upon reclassification from accumulated other comprehensive loss as a result of this action, which included $71 million of compensation and benefits expense and $44 million of income tax expense, which included $61 million of realized stranded tax effects. The following tables present the before- and after-tax changes in each component of accumulated other comprehensive loss. Year ended December 31, 2024 ($ in millions) Before tax Tax effect After tax Investment securities Available-for-sale securities Net unrealized losses arising during the period $ (203) $ 45 $ (158) Less: Net realized gains reclassified to income from continuing operations 3 (a) — (b) 3 Net change (206) 45 (161) Held-to-maturity securities Less: Amortization of amounts previously recorded upon transfer from available-for-sale (87) (c) 21 (b) (66) Translation adjustments Net unrealized losses arising during the period (17) 4 (13) Net investment hedges (d) Net unrealized gains arising during the period 16 (4) 12 Cash flow hedges (d) Net unrealized losses arising during the period (28) 7 (21) Less: Net realized losses reclassified to income from continuing operations (12) (e) 3 (b) (9) Net change (16) 4 (12) Other comprehensive loss $ (136) $ 28 $ (108) (a) Includes gains reclassified to other gain (loss) on investments, net in our Consolidated Statement of Income. (b) Includes amounts reclassified to income tax expense from continuing operations in our Consolidated Statement of Income. (c) Includes amounts reclassified to interest and dividends on investment securities and other earning assets in our Consolidated Statement of Income. (d) For additional information on derivative instruments and hedging activities, refer to Note 21. (e) Includes losses reclassified to interest and fees on finance receivables and loans in our Consolidated Statement of Income. Year ended December 31, 2023 ($ in millions) Before tax Tax effect After tax Investment securities Available-for-sale securities Net unrealized gains arising during the period $ 338 $ (78) $ 260 Net unrealized loss on securities transferred to held-to-maturity (a) 911 (218) 693 Less: Net realized gains reclassified to income from continuing operations 5 (b) (1) (c) 4 Net change 1,244 (295) 949 Held-to-maturity securities Net unrealized loss on securities transferred from available-for-sale (a) (911) 218 (693) Less: Amortization of amounts previously recorded upon transfer from available-for-sale (14) (d) 3 (11) Net change (897) 215 (682) Translation adjustments Net unrealized gains arising during the period 6 (1) 5 Net investment hedges (e) Net unrealized losses arising during the period (3) 1 (2) Cash flow hedges (e) Net unrealized losses arising during the period (22) 6 (16) Less: Net realized gains reclassified to income from continuing operations 14 (f) (3) (c) 11 Net change (36) 9 (27) Other comprehensive income $ 314 $ (71) $ 243 (a) Includes unrealized losses on securities transferred from available-for-sale to held-to-maturity. Refer to Note 8 for additional information. (b) Includes gains reclassified to other gain (loss) on investments, net in our Consolidated Statement of Income. (c) Includes amounts reclassified to income tax expense from continuing operations in our Consolidated Statement of Income. (d) Includes amounts reclassified to interest and dividends on investment securities and other earning assets in our Consolidated Statement of Income. (e) For additional information on derivative instruments and hedging activities, refer to Note 21. (f) Includes gains reclassified to interest and fees on finance receivables and loans in our Consolidated Statement of Income. Year ended December 31, 2022 ($ in millions) Before tax Tax effect After tax Investment securities Available-for-sale securities Net unrealized losses arising during the period $ (5,222) $ 1,240 $ (3,982) Less: Net realized gains reclassified to income from continuing operations 23 (a) (5) (b) 18 Net change (5,245) 1,245 (4,000) Translation adjustments Net unrealized losses arising during the period (10) 2 (8) Net investment hedges (c) Net unrealized gains arising during the period 8 (1) 7 Cash flow hedges (c) Net unrealized losses arising during the period (2) — (2) Less: Net realized gains reclassified to income from continuing operations 21 (d) (6) (b) 15 Net change (23) 6 (17) Defined benefit pension plans Net unrealized gains arising during the period 2 — 2 Less: Net realized losses reclassified to income from continuing operations (71) (e) (44) (b) (115) Net change 73 44 117 Other comprehensive loss $ (5,197) $ 1,296 $ (3,901) (a) Includes gains reclassified to other gain (loss) on investments, net in our Consolidated Statement of Income. (b) Includes amounts reclassified to income tax expense from continuing operations in our Consolidated Statement of Income. (c) For additional information on derivative instruments and hedging activities, refer to Note 21. (d) Includes gains reclassified to interest and fees on finance receivables and loans in our Consolidated Statement of Income. (e) Includes losses reclassified to compensation and benefits expense in our Consolidated Statement of Income as a result of the settlement of our qualified defined benefit pension plan.

Earnings per Common Share

Earnings per Common Share	12 Months Ended
	Dec. 31, 2024
Earnings Per Share [Abstract]
Earnings per Common Share	Earnings per Common Share The following table presents the calculation of basic and diluted earnings per common share. Year ended December 31, ($ in millions, except per share data; shares in thousands) (a) 2024 2023 2022 Net income from continuing operations $ 669 $ 959 $ 1,715 Preferred stock dividends — Series B (63) (63) (63) Preferred stock dividends — Series C (47) (47) (47) Net income from continuing operations attributable to common shareholders $ 559 $ 849 $ 1,605 Loss from discontinued operations, net of tax (1) (2) (1) Net income attributable to common shareholders $ 558 $ 847 $ 1,604 Basic weighted-average common shares outstanding (b) 306,913 303,751 316,690 Diluted weighted-average common shares outstanding (b) 310,160 305,135 318,629 Basic earnings per common share Net income from continuing operations $ 1.82 $ 2.79 $ 5.07 Loss from discontinued operations, net of tax — (0.01) — Net income $ 1.82 $ 2.79 $ 5.06 Diluted earnings per common share Net income from continuing operations $ 1.80 $ 2.78 $ 5.04 Loss from discontinued operations, net of tax — (0.01) — Net income $ 1.80 $ 2.77 $ 5.03 (a) Figures in the table may not recalculate exactly due to rounding. Earnings per share is calculated based on unrounded numbers. (b) Includes shares related to share-based compensation that vested but were not yet issued.

Regulatory Capital and Other Re

Regulatory Capital and Other Regulatory Matters	12 Months Ended
	Dec. 31, 2024
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Regulatory Capital and Other Regulatory Matters	Regulatory Capital and Other Regulatory Matters Ally is subject to enhanced prudential standards that have been established by the FRB under the Dodd-Frank Act, as amended by the EGRRCP Act and as applied to Category IV firms under the Tailoring Rules. Refer to the discussion below, however, about rules proposed by the U.S. banking agencies in 2023 that would significantly alter the Tailoring Rules. Currently, as a Category IV firm, Ally is (1) subject to supervisory stress testing on a two-year cycle, (2) required to submit an annual capital plan to the FRB, (3) exempted from company-run capital stress testing requirements, (4) required to maintain a buffer of unencumbered highly liquid assets to meet projected net stressed cash outflows over a 30-day planning horizon, (5) exempted from the requirements of the LCR and the net stable funding ratio (provided that our average wSTWF continues to remain under $50 billion), and (6) exempted from the requirements of the supplementary leverage ratio, the countercyclical capital buffer, and single-counterparty credit limits. Even so, we are subject to rules enabling the FRB to conduct supervisory stress testing on a more or less frequent basis based on our financial condition, size, complexity, risk profile, scope of operations, or activities or based on risks to the U.S. economy. Further, we are subject to rules requiring the resubmission of our capital plan if we determine that there has been or will be a material change in our risk profile, financial condition, or corporate structure since we last submitted the capital plan or if the FRB determines that (a) our capital plan is incomplete or our capital plan or internal capital adequacy process contains material weaknesses, (b) there has been, or will likely be, a material change in our risk profile (including a material change in our business strategy or any risk exposure), financial condition, or corporate structure, or (c) the BHC stress scenario(s) are not appropriate for our business model and portfolios, or changes in the financial markets or the macroeconomic outlook that could have a material impact on our risk profile and financial condition require the use of updated scenarios. While a resubmission is pending, without prior approval of the FRB, we would generally be prohibited from paying dividends, repurchasing our common stock, or making other capital distributions. In addition, to satisfy the FRB in its review of our capital plan, we may be required to further cease or limit these capital distributions or to issue capital instruments that could be dilutive to shareholders. The FRB also may prevent us from maintaining or expanding lending or other business activities. Basel Capital Framework The FRB and other U.S. banking agencies have adopted risk-based and leverage capital rules that establish minimum capital-to-asset ratios for BHCs, like Ally, and depository institutions, like Ally Bank. The risk-based capital ratios are based on a banking organization’s RWAs, which are generally determined under the standardized approach applicable to Ally and Ally Bank by (1) assigning on-balance-sheet exposures to broad risk-weight categories according to the counterparty or, if relevant, the guarantor or collateral (with higher risk weights assigned to categories of exposures perceived as representing greater risk), and (2) multiplying off-balance-sheet exposures by specified credit conversion factors to calculate credit equivalent amounts and assigning those credit equivalent amounts to the relevant risk-weight categories. The leverage ratio, in contrast, is based on an institution’s average unweighted on-balance-sheet exposures. Under U.S. Basel III, Ally and Ally Bank must maintain a minimum Common Equity Tier 1 risk-based capital ratio of 4.5%, a minimum Tier 1 risk-based capital ratio of 6%, and a minimum total risk-based capital ratio of 8%. On top of the minimum risk-based capital ratios, Ally and Ally Bank are subject to a capital conservation buffer requirement, which must be satisfied entirely with capital that qualifies as Common Equity Tier 1 capital. Failure to maintain more than the full amount of the capital conservation buffer requirement would result in automatic restrictions on the ability of Ally and Ally Bank to make capital distributions, including dividend payments and stock repurchases and redemptions, and to pay discretionary bonuses to executive officers. U.S. Basel III also subjects Ally and Ally Bank to a minimum Tier 1 leverage ratio of 4%. While the capital conservation buffer requirement for Ally Bank is fixed at 2.5% of RWAs, the capital conservation buffer requirement for a Category IV firm, like Ally, is equal to its stress capital buffer requirement. The stress capital buffer requirement for Ally, in turn, is the greater of 2.5% and the result of the following calculation: (1) the difference between Ally’s starting and minimum projected Common Equity Tier 1 capital ratios under the severely adverse scenario in the supervisory stress test, plus (2) the sum of the dollar amount of Ally’s planned common stock dividends for each of the fourth through seventh quarters of its nine-quarter capital planning horizon, as a percentage of RWAs. As of December 31, 2024, the stress capital buffer requirement for Ally was 2.6%. Ally and Ally Bank are currently subject to the U.S. Basel III standardized approach for credit risk but not to the U.S. Basel III advanced approaches for credit risk or operational risk. Ally is also not currently subject to the U.S. market-risk capital rule, which applies only to banking organizations with significant trading assets and liabilities. Since Ally and Ally Bank are currently not subject to the advanced approaches risk-based capital rules, we elected to apply a one-time option to exclude most components of accumulated other comprehensive income and loss from regulatory capital. As of December 31, 2024, and December 31, 2023, Ally had $3.9 billion and $3.8 billion, respectively, of accumulated other comprehensive loss, net of applicable income taxes, that was excluded from Common Equity Tier 1 capital. Refer to the discussion below about rules proposed by the U.S. banking agencies in 2023 that would require us to recognize all components of accumulated other comprehensive income and loss in regulatory capital, except gains and losses on cash-flow hedges where the hedged items are not recognized on our balance sheet at fair value. Refer also to Note 18 for additional details about our accumulated other comprehensive loss. Failure to satisfy regulatory-capital requirements could result in significant sanctions—such as bars or other limits on capital distributions and discretionary bonuses to executive officers, limitations on acquisitions and new activities, restrictions on our acceptance of brokered deposits, a loss of our status as an FHC, or informal or formal enforcement and other supervisory actions—and could have a significant adverse effect on the Consolidated Financial Statements or the business, results of operations, financial condition, or prospects of Ally and Ally Bank. The risk-based capital ratios and the Tier 1 leverage ratio play a central role in PCA, which is an enforcement framework used by the U.S. banking agencies to constrain the activities of depository institutions based on their levels of regulatory capital. Five categories have been established using thresholds for the Common Equity Tier 1 risk-based capital ratio, the Tier 1 risk-based capital ratio, the total risk-based capital ratio, and the Tier 1 leverage ratio: well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized. FDICIA generally prohibits a depository institution from making any capital distribution, including any payment of a cash dividend or a management fee to its BHC, if the depository institution would become undercapitalized after the distribution. An undercapitalized institution is also subject to growth limitations and must submit and fulfill a capital restoration plan. Although BHCs are not subject to the PCA framework, the FRB is empowered to compel a BHC to take measures—such as the execution of financial or performance guarantees—when PCA is required in connection with one of its depository-institution subsidiaries. At both December 31, 2024, and December 31, 2023, Ally Bank met the capital ratios required to be well capitalized under the PCA framework. Under FDICIA and the PCA framework, insured depository institutions such as Ally Bank must be well capitalized or, with a waiver from the FDIC, adequately capitalized in order to accept brokered deposits, and even adequately capitalized institutions are subject to some restrictions on the rates they may offer for brokered deposits. Our brokered deposits totaled $6.7 billion at December 31, 2024, which represented 4.4% of total deposit liabilities. The following table summarizes our capital ratios under U.S. Basel III. December 31, 2024 December 31, 2023 (a) Required minimum (b) Well-capitalized minimum ($ in millions) Amount Ratio Amount Ratio Capital ratios Common Equity Tier 1 (to risk-weighted assets) Ally Financial Inc. $ 15,058 9.82 % $ 15,129 9.36 % 4.50 % (c) Ally Bank 17,229 11.94 17,217 11.24 4.50 6.50 % Tier 1 (to risk-weighted assets) Ally Financial Inc. $ 17,324 11.30 % $ 17,392 10.76 % 6.00 % 6.00 % Ally Bank 17,229 11.94 17,217 11.24 6.00 8.00 Total (to risk-weighted assets) Ally Financial Inc. $ 20,182 13.16 % $ 20,055 12.41 % 8.00 % 10.00 % Ally Bank 19,052 13.21 19,144 12.50 8.00 10.00 Tier 1 leverage (to adjusted quarterly average assets) (d) Ally Financial Inc. $ 17,324 8.92 % $ 17,392 8.67 % 4.00 % (c) Ally Bank 17,229 9.40 17,217 9.07 4.00 5.00 % (a) Capital amounts and ratios are based on regulatory filings of Ally and Ally Bank, and have not been adjusted for December 31, 2023, to reflect our change in the method of accounting for ITCs. Refer to Note 1 for additional information about this change in accounting principle. (b) In addition to the minimum risk-based capital requirements for the Common Equity Tier 1 capital, Tier 1 capital, and total capital ratios, Ally was required to maintain a minimum capital conservation buffer of 2.6% and 2.5% at December 31, 2024, and December 31, 2023, respectively, and Ally Bank was required to maintain a minimum capital conservation buffer of 2.5% at both December 31, 2024, and December 31, 2023. In October 2024, Ally’s capital conservation buffer requirement increased to 2.6%, reflecting its updated stress capital buffer requirement. (c) Currently, there is no ratio component for determining whether a BHC is “well-capitalized.” (d) Federal regulatory reporting guidelines require the calculation of adjusted quarterly average assets using a daily average methodology. On January 1, 2020, we adopted CECL. Refer to Note 1 for additional information about our allowance for loan losses accounting policy. Under a rule finalized by the FRB and other U.S. banking agencies in 2020, we delayed recognizing the estimated impact of CECL on regulatory capital until after a two-year deferral period, which for us extended through December 31, 2021. Beginning on January 1, 2022, we were required to phase in 25% of the previously deferred estimated capital impact of CECL, with an additional 25% to be phased in at the beginning of each subsequent year until fully phased in by the first quarter of 2025. The estimated impact of CECL on regulatory capital that we deferred and began phasing in on January 1, 2022, is generally calculated as the entire day-one impact at adoption plus 25% of the subsequent change in allowance during the two-year deferral period. As of December 31, 2024, the total deferred impact on Common Equity Tier 1 capital related to our adoption of CECL was $296 million. In July 2023, the U.S. banking agencies issued a proposed rule to customize and implement revisions to the global Basel III capital framework that were approved by the Basel Committee in December 2017. The proposal would replace the current “advanced approaches” with a new expanded risk-based approach based on new standardized approaches for credit risk, operational risk and credit valuation adjustment risk, and would significantly revise risk-based capital requirements for all banking institutions with assets of $100 billion or more, including Ally and Ally Bank. Significantly, the proposed rule requires the recognition in regulatory capital of most elements of accumulated other comprehensive income and loss and the application of deductions, limitations, and criteria for specified capital investments, minority interests, and TLAC holdings. Under the proposed rule, a three-year transition period from July 1, 2025, to June 30, 2028, would apply to the recognition of accumulated other comprehensive income and loss in regulatory capital and the use of the expanded risk-based approach. The phase-in of accumulated other comprehensive income and loss is expected to significantly affect our levels of regulatory capital. While we believe that this would be manageable, we also anticipate that our levels of regulatory capital would need to be gradually increased in advance of and during the proposed transition period. The FRB has indicated that it expects to work with the other U.S. banking agencies on a revised proposal in 2025. In August 2023, the U.S. banking agencies issued a proposed rule to improve the resolvability of Category IV firms, like Ally. The proposed rule would require Category II, III, and IV firms, their large consolidated banks, and other institutions to issue and maintain minimum amounts of eligible long-term debt in an amount that is the greater of (i) 6 percent of total RWAs, (ii) 3.5 percent of average total consolidated assets, and (iii) 2.5 percent of total leverage exposure. CIDIs, like Ally Bank, that are consolidated subsidiaries of covered entities, like Ally, would be required to issue eligible long-term debt internally to a company that consolidates the CIDI, which would in turn be required to purchase that long-term debt. Only long-term debt instruments that are most readily able to absorb losses in a resolution proceeding would qualify, and the operations of covered entities would be subject to clean-holding-company requirements such as prohibitions and limitations on their liabilities to unaffiliated entities. Under the proposed rule, a transition period would apply with 25, 50, and 100 percent of the long-term-debt requirements coming into effect by the end of the first, second, and third years, respectively, after finalization of the rule. We are still assessing the impact of this proposed rule but, due to the current structure and amount of debt instruments issued by Ally and Ally Bank, we expect it to significantly affect us. Whether and when final rules related to these proposals may be adopted and take effect, as well as what changes to the proposed rules may be reflected in any such final rules, remain unclear. Also, beyond these proposed rules, more stringent and less tailored liquidity, stress-testing, and other standards for Category IV firms, like Ally, may be forthcoming, including those that may reinstate the LCR, require more rigorous liquidity stress testing, and return Ally to supervisory stress testing on an annual cycle. Capital Planning and Stress Tests Under the Tailoring Rules, we are generally subject to supervisory stress testing on a two-year cycle and exempted from mandated company-run capital stress testing requirements. We are also required to submit an annual capital plan to the FRB. Our annual capital plan must include an assessment of our expected uses and sources of capital and a description of all planned capital actions over a nine-quarter planning horizon, including any issuance of a debt or equity capital instrument, any dividend or other capital distribution, and any similar action that the FRB determines could have an impact on our capital. The plan must also include a detailed description of our process for assessing capital adequacy, including a discussion of how we, under expected and stressful conditions, will maintain capital commensurate with our risks and above the minimum regulatory capital ratios, will serve as a source of strength to Ally Bank, and will maintain sufficient capital to continue our operations by maintaining ready access to funding, meeting our obligations to creditors and other counterparties, and continuing to serve as a credit intermediary. The Tailoring Rules align capital planning, supervisory stress testing, and stress capital buffer requirements for large banking organizations, like Ally. As a Category IV firm, Ally is expected to have the ability to elect to participate in the supervisory stress test—and receive a correspondingly updated stress capital buffer requirement—in a year in which Ally would not generally be subject to the supervisory stress test. Refer to the section titled Basel Capital Framework above for further discussion about our stress capital buffer requirements. During a year in which Ally does not undergo a supervisory stress test, we would receive an updated stress capital buffer requirement only to reflect our updated planned common-stock dividends. Ally did not elect to participate in the 2023 or 2025 supervisory stress tests, but was subject to the 2024 supervisory stress test. We received an updated preliminary stress capital buffer requirement based on our 2022 capital plan submission from the FRB in June 2022, which was determined to be 2.5% and reflected a decline of 100 basis points relative to our prior requirement. The updated 2.5% stress capital buffer requirement was finalized in August 2022 and became effective in October 2022. We submitted our 2023 capital plan to the FRB in April 2023, and received an updated preliminary stress capital buffer requirement in June 2023 that remained unchanged at 2.5%. The 2.5% stress capital buffer requirement was finalized in July 2023 and became effective in October 2023. We submitted our 2024 capital plan to the FRB in April 2024. Ally received an updated preliminary stress capital buffer requirement from the FRB in June 2024, which was determined to be 2.6%. The updated 2.6% stress capital buffer requirement was finalized in August 2024, and became effective in October 2024. In February 2023 and December 2024, we accessed the unsecured debt capital markets each time issuing $500 million of additional subordinated notes, which qualify as Tier 2 capital for Ally under U.S. Basel III. In June 2024 and November 2024, we accessed the debt capital markets and issued $330 million and $440 million, respectively, of credit-linked notes based on reference portfolios of $3.0 billion and $4.0 billion of consumer automotive loans. The proceeds from these credit-linked notes issuances constitute prefunded credit protection for mezzanine tranches of the respective reference portfolio and are recognized as restricted cash and cash equivalents in other assets on our Consolidated Balance Sheet. These transactions are structured to enable us to apply the securitization framework under U.S. Basel III when determining RWA for our retained exposure, which recognizes the credit risk mitigation benefits and generally provides lower risk weights relative to those assigned to consumer automotive loans that are not securitized. Our ability to make capital distributions, including our ability to pay dividends or repurchase shares of our common stock, will continue to be subject to the FRB’s review and our internal governance requirements, including approval by our Board. The amount and size of any future dividends and share repurchases also will be subject to various factors, including Ally’s capital and liquidity positions, accounting and regulatory considerations (including any restrictions that may be imposed by the FRB and any changes to capital, liquidity, and other regulatory requirements that may be proposed or adopted by the U.S. banking agencies), the taxation of share repurchases, financial and operational performance, alternative uses of capital, common-stock price, and general market conditions, and may be extended, modified, or discontinued at any time. The following table presents information related to our common stock and distributions to our common shareholders. Common stock repurchased during period (a) (b) Number of common shares outstanding Cash dividends declared per common share (c) ($ in millions, except per share data; shares in thousands) Approximate dollar value Number of shares Beginning of period End of period 2023 First quarter $ 27 836 299,324 300,821 $ 0.30 Second quarter 2 58 300,821 301,619 0.30 Third quarter — 5 301,619 301,630 0.30 Fourth quarter 4 145 301,630 302,459 0.30 2024 First quarter $ 29 781 302,459 303,978 $ 0.30 Second quarter 1 13 303,978 304,656 0.30 Third quarter 1 27 304,656 304,715 0.30 Fourth quarter 7 167 304,715 305,388 0.30 (a) Includes shares of common stock withheld to cover income taxes owed by participants in our share-based incentive plans. (b) Since the commencement of our initial stock-repurchase program in the third quarter of 2016, we have reduced the number of outstanding shares of our common stock by 37%, from 484 million as of June 30, 2016, to 305 million as of December 31, 2024. Except for repurchases made of shares withheld to cover income taxes owed by participants in our share-based incentive plans, we did not make any common-stock repurchases in 2023 or 2024, and at this time, the Board has not authorized a stock-repurchase program for 2025. (c) On January 16, 2025, our Board declared a quarterly cash dividend of $0.30 per share on all common stock. The dividend was paid on February 14, 2025, to shareholders of record at the close of business on January 31, 2025. Depository Institutions Ally Bank is a member of the Federal Reserve System and is subject to regulation, supervision, and examination by the FRB, the UDFI, the FDIC, and the CFPB. Ally Bank is an insured depository institution and, as such, is required to file periodic reports with the FDIC about its financial condition. Total assets of Ally Bank were $181.4 billion and $186.1 billion at December 31, 2024, and 2023, respectively. Federal and Utah law place a number of conditions, limits, and other restrictions on dividends and other capital distributions that may be paid by Ally Bank to IB Finance and thus indirectly to Ally. Dividends or other distributions made by Ally Bank indirectly to Ally were $1.2 billion and $1.4 billion in 2024 and 2023, respectively. Under rules of the FDIC, Ally Bank is required to periodically submit to the FDIC a resolution plan (commonly known as a living will) that would enable the FDIC, as receiver, to resolve Ally Bank in the event of its insolvency under the FDI Act in a manner that ensures that depositors receive access to their insured deposits within one business day of Ally Bank’s failure (two business days if the failure occurs on a day other than Friday), maximizes the net present value return from the sale or disposition of its assets, and minimizes the amount of any loss realized by creditors in the resolution. In June 2024, the FDIC issued a final rule that requires each CIDI with $100 billion or more in total assets, like Ally Bank, to periodically submit resolution plans (commonly known as living wills) that are designed to enable the FDIC as receiver to resolve the bank in a timely and orderly manner under the FDI Act in the event of its insolvency. The final rule became effective on October 1, 2024. Ally Bank’s first interim supplement under the new rule is due by July 1, 2025. If the FDIC determines that the resolution plan is not credible and deficiencies are not adequately remediated in a timely manner, the FDIC may take formal or informal supervisory actions against us. Insurance Companies Some of our insurance operations—including in the United States, Canada, and Bermuda—are subject to certain minimum aggregate capital requirements, net asset and dividend restrictions, and rules and regulations promulgated by various U.S. and foreign regulatory agencies. Under state and foreign insurance laws, dividend distributions may be made only from statutory unassigned surplus with approvals required from applicable regulatory authorities for dividends in excess of statutory limitations. At December 31, 2024, the maximum dividend that could be paid by the U.S. insurance subsidiaries over the next 12 months without prior statutory approval was $116 million.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities We enter into derivative instruments, which may include interest rate swaps, foreign-currency forwards, equity options, and interest rate options, in connection with our risk-management activities. Our primary objective for using derivative financial instruments is to manage interest rate risk associated with our fixed-rate and variable-rate assets and liabilities, foreign exchange risks related to our net investments in foreign subsidiaries, as well as foreign-currency denominated assets and liabilities, and other market risks related to our investment portfolio. Interest Rate Risk We monitor our mix of fixed-rate and variable-rate assets and liabilities and may enter into interest rate swaps, forwards, and options to achieve a more desired mix of fixed-rate and variable-rate assets and liabilities. We execute these trades to modify our exposure to interest rate risk by converting certain fixed-rate instruments to a variable-rate and certain variable-rate instruments to a fixed-rate. We use a mix of both derivatives that qualify for hedge accounting treatment and economic hedges that do not qualify for hedge accounting treatment. Derivatives qualifying for hedge accounting treatment can include receive-fixed swaps designated as fair value hedges of specific fixed-rate unsecured debt obligations, receive-fixed swaps designated as fair value hedges of specific fixed-rate FHLB advances, pay-fixed swaps designated as fair value hedges of securities within our available-for-sale portfolio, and pay-fixed swaps designated as fair value hedges of fixed-rate held-for-investment consumer automotive loan assets. Other derivatives qualifying for hedge accounting consist of interest rate floor contracts designated as cash flow hedges of the expected future cash flows in the form of interest receipts on a portion of our dealer floorplan commercial loans. We have the ability to execute economic hedges, which could consist of interest rate swaps, interest rate caps, forwards, and options to mitigate interest rate risk. We also enter into interest rate lock commitments and forward commitments that are executed as part of our mortgage business that meet the accounting definition of a derivative. Foreign Exchange Risk We enter into derivative financial instrument contracts to mitigate the risk associated with variability in cash flows related to our various foreign-currency exposures. We enter into foreign-currency forwards with external counterparties as net investment hedges of foreign exchange exposure on our investment in foreign subsidiaries. Our equity is impacted by the cumulative translation adjustments resulting from the translation of foreign subsidiary results; this impact is reflected in our accumulated other comprehensive income and loss. We also periodically enter into foreign-currency forwards to economically hedge any foreign-denominated debt, centralized lending, and foreign-denominated third-party loans. These foreign-currency forwards used as economic hedges are recorded at fair value with changes recorded as income or expense offsetting the gains and losses on the associated foreign-currency transactions. Investment Risk We enter into equity options to mitigate the risk associated with our exposure to the equity markets. Credit Risk We enter into various retail automotive-loan purchase agreements with certain counterparties. As part of those agreements, we may be required to pay the counterparty at agreed upon measurement dates and determinable amounts if actual credit performance of the acquired loans on the measurement date is better than what was estimated at the time of acquisition. Based upon these terms, these contracts meet the accounting definition of a derivative. We enter into arrangements with certain counterparties through which we issue credit-linked notes covering a specified pool of loans. These notes contain an embedded derivative (referred to as credit-linked note derivatives), which provides us credit protection against the risk of loss when a specified credit event occurs on the reference pool. Counterparty Credit Risk Derivative financial instruments contain an element of credit risk if counterparties are unable to meet the terms of the agreements. Credit risk associated with derivative financial instruments is measured as the net replacement cost should the counterparties that owe us under the contract completely fail to perform under the terms of those contracts, with adjustments to reflect the exchange of collateral for margined transactions. We manage our risk to financial counterparties through internal credit analysis, limits, and monitoring. Additionally, derivatives and repurchase agreements are entered into with approved counterparties using industry standard agreements. We execute certain OTC derivatives, such as interest rate caps and floors, using bilateral agreements with financial counterparties. Bilateral agreements generally require both parties to post collateral in the event the fair values of the derivative financial instruments meet posting thresholds established under the agreements. If either party defaults on the obligation, the secured party may seize the collateral. Payments related to the exchange of collateral for OTC derivatives are recognized as collateral. We also execute certain derivatives, such as interest rate swaps, with clearinghouses, which require us to post and receive collateral. For these clearinghouse derivatives, these payments are recognized as settlements rather than collateral. Certain derivative instruments contain provisions that require us to either post additional collateral or immediately settle any outstanding liability balances upon the occurrence of a specified credit-risk-related event. No such specified credit-risk-related events occurred during the years ended December 31, 2024, 2023, or 2022. We placed noncash collateral with counterparties totaling $414 million, supporting our derivative positions at December 31, 2024, compared to $6 million and $642 million of cash and noncash collateral, respectively, at December 31, 2023. These amounts include noncash collateral placed at clearinghouses and exclude cash and noncash collateral pledged under repurchase agreements. The receivables for cash collateral placed are included on our Consolidated Balance Sheet in other assets. We granted our counterparties the right to sell or pledge the noncash collateral. We received cash collateral from counterparties totaling $11 million and $31 million at December 31, 2024, and 2023, respectively. These amounts exclude cash and noncash collateral pledged under repurchase agreements. The payables for cash collateral received are included on our Consolidated Balance Sheet in accrued expenses and other liabilities. Balance Sheet Presentation The following table summarizes the amounts of derivative instruments reported on our Consolidated Balance Sheet. The amounts are presented on a gross basis, are segregated by derivatives that are designated and qualifying as hedging instruments or those that are not, and are further segregated by type of contract within those two categories. Derivative contracts in a receivable and payable position exclude open trade equity on derivatives cleared through central clearing counterparties. Any associated margin exchanged with our central clearing counterparties are treated as settlements of the derivative exposure, rather than collateral. Such payments are recognized as settlements of the derivatives contracts in a receivable and payable position on our Consolidated Balance Sheet. Notional amounts are reference amounts from which contractual obligations are derived and are not recorded on the balance sheet. In our view, derivative notional is not an accurate measure of our derivative exposure when viewed in isolation from other factors, such as market rate fluctuations and counterparty credit risk. 2024 2023 Derivative contracts in a Notional amount Derivative contracts in a Notional amount December 31, ($ in millions) receivable position payable position receivable position payable position Derivatives designated as accounting hedges Interest rate contracts Swaps $ — $ — $ 33,300 $ — $ — $ 35,835 Purchased options 2 — 6,150 31 — 6,250 Foreign exchange contracts Forwards 8 — 170 — 6 166 Total derivatives designated as accounting hedges 10 — 39,620 31 6 42,251 Derivatives not designated as accounting hedges Interest rate contracts Swaps — — — — — 2,000 Forwards — — 109 — — 70 Written options 1 — 63 2 — 88 Total interest rate risk 1 — 172 2 — 2,158 Foreign exchange contracts Forwards 1 — 47 — 1 59 Total foreign exchange risk 1 — 47 — 1 59 Credit contracts Credit-linked note derivatives — — 669 — — — Other credit derivatives (a) — 4 n/a — 10 n/a Total credit risk — 4 669 — 10 — Total derivatives not designated as accounting hedges 2 4 888 2 11 2,217 Total derivatives $ 12 $ 4 $ 40,508 $ 33 $ 17 $ 44,468 n/a = not applicable (a) The maximum potential amount of undiscounted future payments that could be required under these credit derivatives was $10 million and $29 million as of December 31, 2024, and December 31, 2023, respectively. The following table presents amounts recorded on our Consolidated Balance Sheet related to cumulative basis adjustments for fair value hedges. Carrying amount of the hedged items Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items Total Discontinued (a) December 31, ($ in millions) 2024 2023 2024 2023 2024 2023 Assets Available-for-sale securities (b) $ 15,194 $ 16,302 $ (248) $ (79) $ (132) $ (156) Finance receivables and loans, net (c) 34,493 54,189 (51) (93) (10) (27) Liabilities Long-term debt $ 5,987 $ 7,750 $ 88 $ 100 $ 88 $ 100 (a) Represents the fair value hedging adjustment on qualifying hedges for which the hedging relationship was discontinued. This represents a subset of the amounts reported in the total hedging adjustment. (b) These amounts include the amortized cost basis and unallocated basis adjustments of closed portfolios of available-for-sale securities used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. At December 31, 2024, and December 31, 2023, the amortized cost basis and unallocated basis adjustments of the closed portfolios used in these hedging relationships was $13.9 billion and $14.8 billion, respectively, of which $13.6 billion and $14.6 billion, respectively, represents the amortized cost basis and unallocated basis adjustments of closed portfolios designated in an active hedge relationship. At December 31, 2024, and December 31, 2023, the total cumulative basis adjustments associated with these hedging relationships was a $209 million liability and a $45 million liability, respectively, of which the portion related to discontinued hedging relationships was a $103 million liability and a $120 million liability, respectively. At December 31, 2024, and December 31, 2023, the notional amounts of the designated hedged items were $12.0 billion and $11.3 billion, respectively, with cumulative basis adjustments of a $106 million liability and a $75 million asset, respectively, which would be allocated across the entire remaining closed pool upon termination or maturity of the hedge relationship. Refer to Note 8 for a reconciliation of the amortized cost and fair value of available-for-sale securities. (c) These amounts include the carrying value of closed portfolios of loan receivables used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. At December 31, 2024, and December 31, 2023, the carrying value of the closed portfolios used in these hedging relationships was $34.5 billion and $54.2 billion, respectively, of which $33.4 billion and $50.0 billion, respectively, represents the carrying value of closed portfolios designated in an active hedge relationship. At December 31, 2024, and December 31, 2023, the total cumulative basis adjustments associated with these hedging relationships was a $51 million liability and a $93 million liability, respectively, of which the portion related to discontinued hedging relationships was a $10 million liability and a $27 million liability, respectively. At December 31, 2024, and December 31, 2023, the notional amounts of the designated hedged items were $20.1 billion and $23.2 billion, respectively, with cumulative basis adjustments of a $41 million liability and a $66 million liability, respectively, which would be allocated across the entire remaining closed pool upon termination or maturity of the hedge relationship. Statement of Income Presentation The following table summarizes the location and amounts of gains and losses on derivative instruments not designated as accounting hedges reported in our Consolidated Statement of Income. Year ended December 31, ($ in millions) 2024 2023 2022 Gain (loss) recognized in earnings Interest rate contracts Gain on mortgage and automotive loans, net $ 20 $ 18 $ 14 Other income, net of losses — (1) 8 Total interest rate contracts 20 17 22 Foreign exchange contracts Other operating expenses 3 — 8 Total foreign exchange contracts 3 — 8 Credit contracts Other income, net of losses 1 (5) (2) Total credit contracts 1 (5) (2) Equity contracts Other income, net of losses 3 (11) — Total equity contracts 3 (11) — Total gain recognized in earnings $ 27 $ 1 $ 28 The following table summarizes the location and amounts of gains and losses on derivative instruments designated as qualifying fair value and cash flow hedges reported in our Consolidated Statement of Income. Interest and fees on finance receivables and loans Interest and dividends on investment securities and other earning assets Interest on long-term debt Year ended December 31, ($ in millions) 2024 2023 2022 2024 2023 2022 2024 2023 2022 Gain (loss) on fair value hedging relationships Interest rate contracts Hedged fixed-rate unsecured debt $ — $ — $ — $ — $ — $ — $ — $ 1 $ 1 Derivatives designated as hedging instruments on fixed-rate unsecured debt — — — — — — — (1) (1) Hedged fixed-rate FHLB advances — — — — — — — — (5) Derivatives designated as hedging instruments on fixed-rate FHLB advances — — — — — — — — 5 Hedged available-for-sale securities — — — (193) 76 (185) — — — Derivatives designated as hedging instruments on available-for-sale securities — — — 193 (76) 185 — — — Hedged fixed-rate consumer automotive loans 25 491 (599) — — — — — — Derivatives designated as hedging instruments on fixed-rate consumer automotive loans (25) (491) 599 — — — — — — Total gain on fair value hedging relationships — — — — — — — — — (Loss) gain on cash flow hedging relationships Interest rate contracts Hedged variable-rate commercial loans Reclassified from accumulated other comprehensive loss into income (12) 14 21 — — — — — — Other hedged forecasted transactions Reclassified from accumulated other comprehensive loss into income — — — — — — — — (1) Total (loss) gain on cash flow hedging relationships $ (12) $ 14 $ 21 $ — $ — $ — $ — $ — $ (1) Total amounts presented in the Consolidated Statement of Income $ 11,394 $ 11,020 $ 8,099 $ 1,037 $ 1,022 $ 841 $ 1,017 $ 1,001 $ 763 During the next 12 months, we estimate $33 million of losses will be reclassified into pretax earnings from derivatives designated as cash flow hedges. The following table summarizes the location and amounts of gains and losses related to interest and amortization on derivative instruments designated as qualifying fair value and cash flow hedges reported in our Consolidated Statement of Income. Interest and fees on finance receivables and loans Interest and dividends on investment securities and other earning assets Interest on long-term debt Year ended December 31, ($ in millions) 2024 2023 2022 2024 2023 2022 2024 2023 2022 Gain on fair value hedging relationships Interest rate contracts Amortization of deferred unsecured debt basis adjustments $ — $ — $ — $ — $ — $ — $ 9 $ 9 $ 5 Interest for qualifying accounting hedges of unsecured debt — — — — — — — — 1 Amortization of deferred secured debt basis adjustments (FHLB advances) — — — — — — 2 2 (3) Amortization of deferred basis adjustments of available-for-sale securities — — — 23 23 17 — — — Interest for qualifying accounting hedges of available-for-sale securities — — — 177 134 (1) — — — Amortization of deferred loan basis adjustments 15 32 18 — — — — — — Interest for qualifying accounting hedges of consumer automotive loans held for investment 241 616 129 — — — — — — Total gain on fair value hedging relationships $ 256 $ 648 $ 147 $ 200 $ 157 $ 16 $ 11 $ 11 $ 3 The following table summarizes the effect of cash flow hedges on accumulated other comprehensive loss. Year ended December 31, ($ in millions) 2024 2023 2022 Interest rate contracts Loss recognized in other comprehensive (loss) income $ (16) $ (36) $ (23) The following table summarizes the effect of net investment hedges on accumulated other comprehensive loss. Year ended December 31, ($ in millions) 2024 2023 2022 Foreign exchange contracts (a) (b) Gain (loss) recognized in other comprehensive (loss) income $ 16 $ (3) $ 8 (a) There were no amounts excluded from effectiveness testing for the years ended December 31, 2024, 2023, or 2022. (b) Gains and losses reclassified from accumulated other comprehensive loss are reported as other income, net of losses, in the Consolidated Statement of Income. There were no amounts reclassified for the years ended December 31, 2024, 2023, or 2022.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The significant components of income tax expense from continuing operations were as follows. Year ended December 31, ($ in millions) 2024 2023 2022 Current income tax expense U.S. federal $ 107 $ 85 $ 1 Foreign 6 5 3 State and local 26 36 9 Total current expense 139 126 13 Deferred income tax expense (benefit) U.S. federal 53 26 493 Foreign 1 (1) (1) State and local (26) (7) 61 Total deferred expense (benefit) 28 18 553 Other tax expense (a) — — 61 Total income tax expense from continuing operations $ 167 $ 144 $ 627 (a) Represents the realization of stranded tax amounts, under the portfolio method, connected to our qualified defined benefit pension plan that was settled during the year ended December 31, 2022. These stranded tax amounts had accumulated in other comprehensive loss over time. Refer to Note 18 for additional information. A reconciliation of income tax expense from continuing operations with the amounts at the statutory U.S. federal income tax rate is shown in the following table. Year ended December 31, ($ in millions) 2024 2023 2022 Statutory U.S. federal tax expense $ 175 $ 232 $ 492 Change in tax resulting from Nondeductible expenses 53 44 31 Tax credits, excluding expirations (49) (55) (73) State and local income taxes, net of federal income tax benefit 30 (4) 77 Valuation allowance change, excluding expirations (28) (91) 54 Unrecognized tax benefits (11) 38 (4) Tax law enactment — (18) — Settlement of qualified defined benefit pension plan — — 61 Other, net (3) (2) (11) Total income tax expense from continuing operations $ 167 $ 144 $ 627 For the year ended December 31, 2024, consolidated income tax expense from continuing operations was largely driven by pretax earnings and nondeductible FDIC premium expenses, partially offset by an income tax benefit related to various tax credits. For the year ended December 31, 2023, consolidated income tax expense from continuing operations was largely driven by pretax earnings, partially offset by the release of the valuation allowance on foreign tax credit carryforwards as well as an income tax benefit related to various tax credits. The release of the valuation allowance was primarily driven by the identification and execution of a tax planning strategy allowing for additional utilization of foreign tax credits. For the year ended December 31, 2022, consolidated income tax expense from continuing operations was largely driven by pretax earnings, the settlement of our qualified defined benefit pension plan, and an increase of the valuation allowance on foreign tax credit carryforwards, partially offset by an income tax benefit related to various tax credits. The increase in the valuation allowance was primarily driven by a reduction in forecasted foreign-sourced income caused by revised estimates from certain previously executed and forecasted securitization transactions. During 2022, we lowered our income tax benefit from these securitization transactions due to the recharacterization of certain income that was previously foreign-sourced income as domestically sourced and higher interest expense assumptions. We record rehabilitation, energy, and clean vehicle tax credits as part of our ITC category. During the fourth quarter of 2024, we elected to change our method of accounting for ITCs from the flow-through method to the deferral method. Refer to the section titled Change in Accounting Principle in Note 1 for additional information. Our ITCs are generally accounted for using the deferral method and recognized as a reduction of the corresponding asset value. However, ITCs that qualify for proportional amortization treatment are accounted for using the flow-through method and are recognized as a reduction to current income tax expense. The significant components of deferred tax assets and liabilities are reflected in the following table. December 31, ($ in millions) 2024 2023 Deferred tax assets Adjustments to securities and hedging transactions (a) $ 1,080 $ 1,066 Tax credit carryforwards 679 506 Adjustments to loan value 420 569 State and local taxes 301 305 Fixed assets 257 165 Other 454 426 Gross deferred tax assets 3,191 3,037 Valuation allowance (138) (176) Deferred tax assets, net of valuation allowance 3,053 2,861 Deferred tax liabilities Lease transactions 653 1,117 Deferred acquisition costs 380 387 Long-term debt 62 64 Other 52 57 Gross deferred tax liabilities 1,147 1,625 Net deferred tax assets (b) $ 1,906 $ 1,236 (a) Securities include deferred tax assets related to available-for-sale securities, held-to-maturity securities, and equity securities. At December 31, 2024, and 2023, there were $882 million and $808 million of deferred tax assets related to available-for-sale securities, respectively. (b) Amounts include $1.9 billion and $1.2 billion of net deferred tax assets included in other assets on our Consolidated Balance Sheet for tax jurisdictions in a total net deferred tax asset position, and $10 million included in accrued expenses and other liabilities on our Consolidated Balance Sheet for tax jurisdictions in a total net deferred tax liability position at both December 31, 2024, and 2023. As of each reporting date, we consider existing evidence, both positive and negative, that could impact our view with regard to future realization of deferred tax assets. We continue to believe it is more likely than not that the benefit for certain foreign tax credit carryforwards and state net operating loss carryforwards will not be realized. In recognition of this risk, we continue to provide a partial valuation allowance on the deferred tax assets relating to these carryforwards, and it is reasonably possible that the valuation allowance may change in the next 12 months. The following table summarizes net deferred tax assets including related valuation allowances at December 31, 2024. ($ in millions) Deferred tax asset Valuation allowance Net deferred tax asset Years of expiration Tax credit carryforwards General business credits $ 611 $ — $ 611 2044 Foreign tax credits 68 (27) 41 2025–2034 Total tax credit carryforwards 679 (27) 652 Tax loss carryforwards Net operating losses — state 128 (a) (111) 17 2025–Indefinite Net operating losses — federal 7 — 7 2028–Indefinite Total U.S. federal and state tax loss carryforwards 135 (111) 24 Other net deferred tax assets 1,230 — 1,230 n/a Net deferred tax assets $ 2,044 $ (138) $ 1,906 n/a = not applicable (a) State net operating loss carryforwards are included in the state and local taxes and other liabilities totals disclosed in our deferred inventory table above. As of December 31, 2024, we have recognized insignificant deferred tax liabilities for incremental U.S. federal taxes that stem from temporary differences related to investment in foreign subsidiaries or corporate joint ventures as there is no assertion of indefinite reinvestment outside of the United States. The following table provides a reconciliation of the beginning and ending amount of unrecognized tax benefits. ($ in millions) 2024 2023 2022 Balance at January 1, $ 91 $ 46 $ 53 Additions based on tax positions related to the current year — — — Additions for tax positions of prior years 6 48 2 Reductions for tax positions of prior years (20) (2) (2) Settlements — (1) (7) Expiration of statute of limitations — — — Balance at December 31, $ 77 $ 91 $ 46 Included in the unrecognized tax benefits balances are some items, the recognition of which would not affect the effective tax rate, such as the tax effect of certain temporary differences and the portion of gross state unrecognized tax benefits that would be offset by the tax benefit of the associated U.S. federal deduction. The balance of unrecognized tax benefits that, if recognized, would affect our effective tax rate was $64 million for the year ended December 31, 2024, $75 million for the year ended December 31, 2023, and $36 million for the year ended December 31, 2022. We recognize accrued interest and penalties related to uncertain income tax positions in interest expense and other operating expenses, respectively. As of December 31, 2024, the cumulative accrued balance for interest and penalties was $7 million, and interest and penalties of $1 million were accrued during the year ended December 31, 2024. As of December 31, 2023, the cumulative accrued balance for interest and penalties was $6 million, and penalties of $3 million were accrued during the year ended December 31, 2023. As of December 31, 2022, the cumulative accrued balance for interest and penalties was $3 million, and interest and penalties of $2 million were accrued during the year ended December 31, 2022. It is reasonably possible that the unrecognized tax benefits will decrease by up to $62 million over the next 12 months if certain tax matters ultimately settle with the applicable taxing jurisdictions. We file tax returns in the U.S. federal jurisdiction and various states and foreign jurisdictions. Our most significant operations are in the United States and Canada. The oldest tax years that remain subject to examination for those jurisdictions are 2019 and 2011, respectively.

Share-based Compensation Plans

Share-based Compensation Plans	12 Months Ended
	Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]
Share-based Compensation Plans	Share-based Compensation Plans Awards of equity-based compensation to our named executive officers and other employees are governed by the Company’s ICP, which was approved by the Company’s shareholders and amended and restated effective as of May 4, 2021. These awards primarily take the form of (1) share-settled and cash-settled PSUs that vest in whole on the third anniversary of the grant date, subject to the achievement of applicable performance goals and continued employment through that time, and (2) share-settled RSUs that vest one-third on each of the first, second, and third anniversaries of the grant date, in each case, subject to continued employment through that time. Other awards — such as those granted under our #OwnIt Annual Grant Program — may take the form of RSUs that vest in whole on the third anniversary of the grant date, subject to continued employment through that time. For PSUs and RSUs, any dividends declared over the vesting period are accumulated and paid at or after the time of settlement. All awards under the ICP are structured to align with the Company’s performance, prudent but not excessive risk-taking, long-term value creation for our shareholders, and other elements of our compensation philosophy. Awards also typically include provisions that address vesting and settlement in the case of a qualifying termination or retirement. The ICP is administered by the Compensation, Nominating, and Governance Committee of our Board. At December 31, 2024, we had approximately 31.7 million shares available for future grants of equity-based awards under the ICP. Equity-based awards that settle in Ally common stock are classified as equity awards under U.S. GAAP, and the cost of the awards is ratably charged to compensation and benefits expense in our Consolidated Statement of Income over their applicable service period based on the grant date fair value of Ally common stock. Equity-based awards that settle in cash are subject to liability accounting, with the expense adjusted to fair value based on changes in the share price of Ally common stock up to the settlement date. We had non-vested share-settled and cash-settled PSUs and RSUs outstanding of approximately 6.6 million and 0.7 million, respectively, at December 31, 2024. We recognized expense related to PSUs and RSUs of $136 million, $127 million, and $100 million for the years ended December 31, 2024, 2023, and 2022, respectively. The following table presents the changes in outstanding non-vested PSUs and RSUs activity for share-settled awards during 2024. (in thousands, except per share data) Number of units Weighted-average grant date fair value per share RSUs and PSUs Outstanding non-vested at January 1, 2024 6,695 $ 35.68 Modified awards to settle in cash (a) (56) 40.24 Granted 3,305 37.99 Vested (2,824) 38.13 Forfeited (501) 38.39 Outstanding non-vested at December 31, 2024 6,619 35.55 (a) During 2024, certain non-vested PSUs were modified and reclassified to liability-based awards as we intend to settle them in cash upon vesting.

Fair Value

Fair Value	12 Months Ended
	Dec. 31, 2024
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Fair Value Measurements For purposes of this disclosure, fair value is defined as the exchange price that would be received to sell an asset or paid to transfer a liability (exit price) in the principal or most advantageous market in an orderly transaction between market participants at the measurement date under current market conditions. Fair value is based on the assumptions we believe market participants would use when pricing an asset or liability. Additionally, entities are required to consider all aspects of nonperformance risk, including the entity’s own credit standing, when measuring the fair value of a liability. U.S. GAAP specifies a three-level hierarchy that is used when measuring and disclosing fair value. The fair value hierarchy gives the highest priority to quoted prices available in active markets (i.e., observable inputs) and the lowest priority to data lacking transparency (i.e., unobservable inputs). An instrument’s categorization within the fair value hierarchy is based on the lowest level of significant input to its valuation. The following is a description of the three hierarchy levels. Level 1 Inputs are quoted prices in active markets for identical assets or liabilities at the measurement date. Additionally, the entity must have the ability to access the active market, and the quoted prices cannot be adjusted by the entity. Level 2 Inputs are other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs include quoted prices in active markets for similar assets or liabilities; quoted prices in inactive markets for identical or similar assets or liabilities; or inputs that are observable or can be corroborated by observable market data by correlation or other means for substantially the full term of the assets or liabilities. Level 3 Unobservable inputs are supported by little or no market activity. The unobservable inputs represent management’s best assumptions of how market participants would price the assets or liabilities. Generally, Level 3 assets and liabilities are valued using pricing models, discounted cash flow methodologies, or similar techniques that require significant judgment or estimation. Judgment is used in estimating inputs to our internal valuation models used to estimate our Level 3 fair value measurements. Level 3 inputs such as interest rate movements, prepayment speeds, credit losses, and discount rates are inherently difficult to estimate. Changes to these inputs can have a significant effect on fair value measurements and amounts that could be realized. The following are descriptions of the valuation methodologies used to measure material assets and liabilities at fair value and details of the valuation models, key inputs to those models, and significant assumptions utilized. • Equity securities — We hold various marketable equity securities measured at fair value with changes in fair value recognized in net income. Measurements based on observable market prices are classified as Level 1. • Available-for-sale securities — We carry our available-for-sale securities at fair value based on external pricing sources. We classify our securities as Level 1 when fair value is determined using quoted prices available for the same instruments trading in active markets. We classify our securities as Level 2 when fair value is determined using prices for similar instruments trading in active markets. We perform pricing validation procedures for our available-for-sale securities. • Derivative instruments — We enter into a variety of derivative financial instruments as part of our risk-management strategies. Certain of these derivatives are exchange traded, such as equity options. To determine the fair value of these instruments, we utilize the quoted market prices for those particular derivative contracts; therefore, we classified these contracts as Level 1. We also execute OTC and centrally cleared derivative contracts, such as interest rate swaps, foreign-currency denominated forward contracts, caps, floors, and agency to-be-announced securities. We utilize third-party-developed valuation models that are widely accepted in the market to value these derivative contracts. The specific terms of the contract and market observable inputs (such as interest rate forward curves, interpolated volatility assumptions, or equity pricing) are used in the model. We classified these derivative contracts as Level 2 because all significant inputs into these models were market observable. We also enter into interest rate lock commitments and forward commitments that are executed as part of our mortgage operations, certain of which meet the accounting definition of a derivative and therefore are recorded as derivatives on our Consolidated Balance Sheet. Interest rate lock commitments are valued with unobservable inputs, so they are classified as Level 3. Certain forward commitments are Level 2 and others are Level 3 depending on the valuation model inputs. We purchase automotive finance receivables and loans from third parties as part of forward flow arrangements and, from time-to-time, execute opportunistic ad-hoc bulk purchases. As part of those agreements, we may be required to pay the counterparty at agreed upon measurement dates and determinable amounts if actual credit performance of the acquired loans on the measurement date is better than what was estimated at the time of acquisition. Because these contracts meet the accounting definition of a derivative, we recognize a liability at fair value for these deferred purchase price payments. The fair value of these liabilities is determined using a discounted cash flow method. To estimate cash flows, we utilize various significant assumptions, including market observable inputs (for example, forward interest rates) and internally developed inputs (for example, prepayment speeds, delinquency levels, and expected credit losses). These liabilities are valued using internal loss models with unobservable inputs, and are classified as Level 3. We are required to consider all aspects of nonperformance risk, including our own credit standing, when measuring fair value of derivative assets and liabilities. We reduce credit risk on the majority of our derivatives by entering into legally enforceable agreements that enable the posting and receiving of collateral associated with the fair value of our derivative positions on an ongoing basis. In the event that we do not enter into legally enforceable agreements that enable the posting and receiving of collateral, we will consider our credit risk in the valuation of derivative liabilities through a DVA and the credit risk of our counterparties in the valuation of derivative assets through a CVA, if warranted. When measuring these valuation adjustments, we generally use credit default swap spreads. Recurring Fair Value The following tables display the assets and liabilities measured at fair value on a recurring basis including financial instruments elected for the fair value option. We often economically hedge the fair value change of our assets or liabilities with derivatives. The tables below display the hedges separately from the hedged items; therefore, they do not directly display the impact of our risk-management activities. Recurring fair value measurements December 31, 2024 ($ in millions) Level 1 Level 2 Level 3 Total Assets Investment securities Equity securities (a) (b) $ 820 $ — $ — $ 820 Available-for-sale securities Debt securities U.S. Treasury and federal agencies 1,873 — — 1,873 U.S. States and political subdivisions — 582 35 617 Foreign government 36 158 — 194 Agency mortgage-backed residential — 13,653 — 13,653 Mortgage-backed residential — 206 — 206 Agency mortgage-backed commercial — 3,984 — 3,984 Asset-backed — 129 — 129 Corporate debt — 1,754 — 1,754 Total available-for-sale securities 1,909 20,466 35 22,410 Loans held-for-sale (c) — 11 5 16 Other assets Derivative contracts in a receivable position Interest rate — 2 1 3 Foreign currency — 9 — 9 Total derivative contracts in a receivable position — 11 1 12 Total assets $ 2,729 $ 20,488 $ 41 $ 23,258 Liabilities Accrued expenses and other liabilities Derivative contracts in a payable position Credit $ — $ — $ 4 $ 4 Total derivative contracts in a payable position — — 4 4 Total liabilities $ — $ — $ 4 $ 4 (a) Our direct investment in any one industry did not exceed 14%. The concentration calculation excludes our investment in mutual funds and ETFs. (b) Excludes $51 million of equity securities that are measured at fair value using the net asset value practical expedient and therefore are not classified in the fair value hierarchy. (c) Consumer mortgage loans carried at fair value due to fair value option elections. Recurring fair value measurements December 31, 2023 ($ in millions) Level 1 Level 2 Level 3 Total Assets Investment securities Equity securities (a) (b) $ 765 $ — $ 1 $ 766 Available-for-sale securities Debt securities U.S. Treasury and federal agencies 2,075 — — 2,075 U.S. States and political subdivisions — 649 9 658 Foreign government 51 132 — 183 Agency mortgage-backed residential — 15,384 — 15,384 Mortgage-backed residential — 225 — 225 Agency mortgage-backed commercial — 3,758 — 3,758 Asset-backed — 332 — 332 Corporate debt — 1,800 — 1,800 Total available-for-sale securities 2,126 22,280 9 24,415 Loans held-for-sale (c) — 25 — 25 Other assets Derivative contracts in a receivable position Interest rate — 31 2 33 Total derivative contracts in a receivable position — 31 2 33 Total assets $ 2,891 $ 22,336 $ 12 $ 25,239 Liabilities Accrued expenses and other liabilities Derivative contracts in a payable position Foreign currency $ — $ 7 $ — $ 7 Credit — — 10 10 Total derivative contracts in a payable position — 7 10 17 Total liabilities $ — $ 7 $ 10 $ 17 (a) Our direct investment in any one industry did not exceed 11%. The concentration calculation excludes our investment in mutual funds and ETFs. (b) Excludes $44 million of equity securities that are measured at fair value using the net asset value practical expedient and therefore are not classified in the fair value hierarchy. (c) Consumer mortgage loans carried at fair value due to fair value option elections. The following tables present the reconciliation for all Level 3 assets and liabilities measured at fair value on a recurring basis. We often economically hedge the fair value change of our assets or liabilities with derivatives and other financial instruments. The Level 3 items presented below may be hedged by derivatives and other financial instruments that are classified as Level 1 or Level 2. Thus, the following tables do not fully reflect the impact of our risk-management activities. Equity securities Available-for-sale securities Loans Finance receivables and loans, net (a) ($ in millions) 2024 2023 2024 2023 2024 2023 2024 2023 Assets Fair value at January 1, $ 1 $ 1 $ 9 $ 4 $ — $ — $ — $ 3 Net realized/unrealized gains Included in earnings — — — — — — — — Included in OCI — — — — — — — — Purchases and originations (b) — — 29 5 31 — — — Sales — — — — (26) — — — Issuances — — — — — — — — Settlements — — (3) — — — — (3) Transfers into Level 3 — — — — — — — — Transfers out of Level 3 (1) — — — — — — — Fair value at December 31, $ — $ 1 $ 35 $ 9 $ 5 $ — $ — $ — Net unrealized gains still held at December 31, Included in earnings $ — $ — $ — $ — $ — $ — $ — $ — Included in OCI — — — — — — — — (a) Carried at fair value due to fair value option elections. (b) Includes a $27 million reclassification of a commercial and industrial exposure to an available-for-sale debt security during the year ended December 31, 2024. Derivative liabilities, net of derivative assets (a) ($ in millions) 2024 2023 Liabilities Fair value at January 1, $ 8 $ 39 Net realized/unrealized gains Included in earnings (18) (11) Included in OCI — — Purchases and originations — — Sales — — Issuances — — Settlements (4) (34) Transfers into Level 3 — — Transfers out of Level 3 (b) 17 14 Fair value at December 31, $ 3 $ 8 Net unrealized gains still held at December 31, Included in earnings $ (7) $ (7) Included in OCI — — (a) Net realized/unrealized gains are reported as gain on mortgage and automotive loans, net, and other income, net of losses, in the Consolidated Statement of Income. (b) Represents the settlement value of interest rate derivative assets that are transferred to loans held-for-sale within Level 2 of the fair value hierarchy during the years ended December 31, 2024, and December 31, 2023. These transfers are deemed to have occurred at the end of the reporting period. Nonrecurring Fair Value We may be required to measure certain assets and liabilities at fair value from time to time. These periodic fair value measures typically result from the application of lower-of-cost or fair value accounting or certain impairment measures. These items would constitute nonrecurring fair value measures. The following tables display assets and liabilities measured at fair value on a nonrecurring basis and still held at December 31, 2024, and December 31, 2023, respectively. The amounts are generally as of the end of each period presented, which approximate the fair value measurements that occurred during each period. These tables exclude assets of operations held-for-sale, refer to Note 2 for additional information. Nonrecurring fair value measurements Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments Total gain (loss) included in earnings December 31, 2024 ($ in millions) Level 1 Level 2 Level 3 Total Assets Loans held-for-sale, net $ — $ — $ 143 $ 143 $ — n/m (a) Commercial finance receivables and loans, net (b) Automotive — — 13 13 (2) n/m (a) Other — — 26 26 (63) n/m (a) Total commercial finance receivables and loans, net — — 39 39 (65) n/m (a) Other assets Goodwill (c) — — 362 362 (118) n/m (a) Repossessed and foreclosed assets (d) — — 8 8 (1) n/m (a) Total assets $ — $ — $ 552 $ 552 $ (184) n/m n/m = not meaningful (a) We consider the applicable valuation allowance, allowance for loan losses, or cumulative adjustments to be the most relevant indicator of the impact on earnings caused by the fair value measurement. Accordingly, the table above excludes total gains and losses included in earnings for these items. The carrying values are inclusive of the respective valuation reserve, loan loss allowance, or cumulative adjustment. (b) Represents collateral-dependent loans held for investment for which a nonrecurring measurement was made. The related allowance for loan losses represents the cumulative fair value adjustments for those specific receivables. (c) As of December 31, 2024, we recognized a $118 million impairment of goodwill at Ally Credit Card. Refer to Note 13 for further discussion. (d) The allowance provided for repossessed and foreclosed assets represents any cumulative valuation adjustment recognized to adjust the assets to fair value. Nonrecurring fair value measurements Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments Total gain (loss) included in earnings December 31, 2023 ($ in millions) Level 1 Level 2 Level 3 Total Assets Loans held-for-sale, net $ — $ — $ 375 $ 375 $ — n/m (a) Commercial finance receivables and loans, net (b) Automotive — — 6 6 — n/m (a) Other — — 49 49 (43) n/m (a) Total commercial finance receivables and loans, net — — 55 55 (43) n/m (a) Other assets Nonmarketable equity investments — — 1 1 1 n/m (a) Repossessed and foreclosed assets (c) — — 10 10 (1) n/m (a) Total assets $ — $ — $ 441 $ 441 $ (43) n/m n/m = not meaningful (a) We consider the applicable valuation allowance, allowance for loan losses, or cumulative adjustments to be the most relevant indicator of the impact on earnings caused by the fair value measurement. Accordingly, the table above excludes total gains and losses included in earnings for these items. The carrying values are inclusive of the respective valuation reserve, loan loss allowance, or cumulative adjustment. (b) Represents collateral-dependent loans held for investment for which a nonrecurring measurement was made. The related allowance for loan losses represents the cumulative fair value adjustments for those specific receivables. (c) The allowance provided for repossessed and foreclosed assets represents any cumulative valuation adjustment recognized to adjust the assets to fair value. Fair Value Option for Financial Assets We elected the fair value option for an insignificant amount of conforming mortgage loans held-for-sale, non-conforming jumbo mortgage loans held-for-sale, and certain personal lending finance receivables. We elected the fair value option for conforming mortgage loans held-for-sale and certain non-conforming jumbo mortgage loans held-for-sale to mitigate earnings volatility by better matching the accounting for the assets with the related derivatives. We elected the fair value option for certain personal lending finance receivables to mitigate the complexities of recording these loans at amortized cost. Our intent in electing fair value measurement was to mitigate a divergence between accounting gains or losses and economic exposure for certain assets and liabilities. Fair Value of Financial Instruments The following table presents the carrying and estimated fair value of financial instruments, except for those recorded at fair value on a recurring basis presented in the previous section of this note titled Recurring Fair Value. This table excludes assets of operations held-for-sale, refer to Note 2 for additional information. When possible, we use quoted market prices to determine fair value. Where quoted market prices are not available, the fair value is internally derived based on appropriate valuation methodologies with respect to the amount and timing of future cash flows and estimated discount rates. However, considerable judgment is required in interpreting current market data to develop the market assumptions and inputs necessary to estimate fair value. As such, the actual amount received to sell an asset or the amount paid to settle a liability could differ from our estimates. Fair value information presented herein was based on information available at December 31, 2024, and December 31, 2023. Estimated fair value ($ in millions) Carrying value Level 1 Level 2 Level 3 Total December 31, 2024 Financial assets Held-to-maturity securities $ 4,346 $ — $ 4,293 $ — $ 4,293 Loans held-for-sale, net 144 — — 144 144 Finance receivables and loans, net 132,316 — — 134,603 134,603 FHLB/FRB stock (a) 698 — 698 — 698 Financial liabilities Deposit liabilities $ 47,242 $ — $ — $ 47,403 $ 47,403 Short-term borrowings 1,625 — — 1,625 1,625 Long-term debt 17,495 — 13,535 4,982 18,517 December 31, 2023 Financial assets Held-to-maturity securities $ 4,680 $ — $ 4,729 $ — $ 4,729 Loans held-for-sale, net 375 — — 375 375 Finance receivables and loans, net 135,852 — — 137,244 137,244 FHLB/FRB stock (a) 784 — 784 — 784 Financial liabilities Deposit liabilities $ 55,187 $ — $ — $ 55,311 $ 55,311 Short-term borrowings 3,297 — — 3,335 3,335 Long-term debt 17,570 — 12,789 5,749 18,538 (a) Included in other assets on our Consolidated Balance Sheet. In addition to the financial instruments presented in the above table, we have various financial instruments for which the carrying value approximates the fair value due to their short-term nature and limited credit risk. These instruments include cash and cash equivalents, restricted cash, cash collateral, accrued interest receivable, accrued interest payable, trade receivables and payables, and other short-term receivables and payables. Included in cash and cash equivalents are highly liquid investments that are readily convertible to known amounts of cash and which are subject to an insignificant risk of change in value due to interest rate, quoted price, or penalty on withdrawal. Classified as Level 1 under the fair value hierarchy, cash and cash equivalents generally expose us to limited credit risk and are so near maturity that they present insignificant risk of changes in value because of changes in interest rates.

Offsetting Assets and Liabiliti

Offsetting Assets and Liabilities	12 Months Ended
	Dec. 31, 2024
Offsetting [Abstract]
Offsetting Assets and Liabilities	Offsetting Assets and Liabilities Our derivative contracts and repurchase/reverse repurchase transactions are generally supported by qualifying master netting and master repurchase agreements. These agreements are legally enforceable bilateral agreements that (i) create a single legal obligation for all individual transactions covered by the agreement to the nondefaulting entity upon an event of default of the counterparty, including bankruptcy, insolvency, or similar proceeding, and (ii) provide the nondefaulting entity the right to accelerate, terminate, and close-out on a net basis all transactions under the agreement and to liquidate or set off collateral promptly upon an event of default of the counterparty. To further mitigate the risk of counterparty default related to derivative instruments, we maintain collateral agreements with certain counterparties. The agreements require both parties to maintain collateral in the event the fair values of the derivative financial instruments meet established thresholds. In the event that either party defaults on the obligation, the secured party may seize the collateral. Generally, our collateral arrangements are bilateral such that we and the counterparty post collateral for the obligation. Contractual terms provide for standard and customary exchange of collateral based on changes in the market value of the outstanding derivatives. A party posts additional collateral when their obligation rises or removes collateral when it falls, such that the net replacement cost of the nondefaulting party is covered in the event of counterparty default. In certain instances, as it relates to our derivative instruments, we have the option to report derivative assets and liabilities as well as assets and liabilities associated with cash collateral received or delivered that is governed by a master netting agreement on a net basis as long as certain qualifying criteria are met. Similarly, for our repurchase/reverse repurchase transactions, we have the option to report recognized assets and liabilities subject to a master netting agreement on a net basis if certain qualifying criteria are met. At December 31, 2024, these instruments are reported as gross assets and gross liabilities on the Consolidated Balance Sheet. For additional information on derivative instruments and hedging activities, refer to Note 21. The composition of offsetting derivative instruments, financial assets, and financial liabilities was as follows. Gross amounts of recognized assets/liabilities Gross amounts offset on the Consolidated Balance Sheet Net amounts of assets/liabilities presented on the Consolidated Balance Sheet Gross amounts not offset on the Consolidated Balance Sheet December 31, ($ in millions) Financial instruments Collateral (a) (b) (c) Net amount 2024 Assets Derivative assets (d) $ 12 $ — $ 12 $ — $ (10) $ 2 Total assets $ 12 $ — $ 12 $ — $ (10) $ 2 Liabilities Derivative liabilities (e) $ 4 $ — $ 4 $ — $ — $ 4 Total liabilities $ 4 $ — $ 4 $ — $ — $ 4 2023 Assets Derivative assets (d) $ 33 $ — $ 33 $ — $ (31) $ 2 Total assets $ 33 $ — $ 33 $ — $ (31) $ 2 Liabilities Derivative liabilities (e) $ 17 $ — $ 17 $ — $ (6) $ 11 Securities sold under agreements to repurchase (f) 747 — 747 — (747) — Total liabilities $ 764 $ — $ 764 $ — $ (753) $ 11 (a) Financial collateral received or pledged shown as a balance based on the sum of all net asset and liability positions between Ally and each individual derivative counterparty. (b) Amounts disclosed are limited to the financial asset or liability balance and, accordingly, exclude excess collateral received or pledged and noncash collateral received. We do not record noncash collateral received on our Consolidated Balance Sheet unless certain conditions are met. (c) Certain agreements grant us the right to sell or pledge the noncash assets we receive as collateral. We have not sold or pledged any of the noncash collateral received under these agreements. (d) Includes derivative assets with no offsetting arrangements of $1 million and $2 million as of December 31, 2024, and December 31, 2023, respectively. (e) Includes derivative liabilities with no offsetting arrangements of $4 million and $10 million as of December 31, 2024, and December 31, 2023, respectively. (f) For additional information on securities sold under agreements to repurchase, refer to Note 15.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2024
Segment Reporting [Abstract]
Segment Information	Segment Information Operating segments are defined as components of an enterprise that engage in business activity from which revenues are earned and expenses incurred for which discrete financial information is available that is evaluated regularly by our CODM in deciding how to allocate resources and in assessing performance. We define our CODM as the Chief Executive Officer. The CODM uses pretax income to evaluate income generated from segment assets, and to assess a segment’s performance by comparing the results, relative to other segments. Additionally, the budgeting and forecasting process monitors budget versus actual results with emphasis on pretax income, which are also used in assessing the performance of a segment. Change in Allocation of Costs to Reportable Segments During the fourth quarter of 2024, we changed our COH methodology to eliminate the allocation of funding costs associated with our deposits business, which will now reside within Corporate and Other. This change reflects our reportable operating segments under a market-funding approach and aligns the costs of deposit funding with the related benefits received from deposit funding, which also resides with Corporate and Other. Additionally, our COH methodology was changed to allocate additional overhead expenses related to centralized support functions and marketing sponsorships to our reportable operating segments as a result of a change in how our CODM assesses our performance. These expenses were previously included within Corporate and Other. The manner in which our CODM views our COH methodologies changed after our current CEO joined Ally during 2024 and completed a review of the strategy of the business. Also, during the fourth quarter of 2024, we changed our FTP methodology by aligning the capital credit and charge calculations with the FTP rate charged to each business line. Capital credits reduce the business lines’ overall FTP charge, recognizing that a portion of a business line’s assets is funded with allocated regulatory capital. Capital charges impact business lines not subject to FTP funding allocations and are applied to the amount of excess equity that the business line holds, relative to its regulatory capital. Amounts for 2023 and 2022 have been recast to conform to the current COH and FTP methodologies. Change in Reportable Segments As a result of a change in how our CODM views and operates our business, during the fourth quarter of 2024, we made changes in the composition of our operating segments. The manner in which our CODM views and assesses performance changed after our current CEO joined Ally during 2024 and completed a review of the strategy of the business. Furthermore, consumer mortgage originations will cease during the second quarter of 2025, which will result in a gradual run-off of our remaining consumer mortgage loan portfolio. Financial information related to our Mortgage Finance business is now included in Corporate and Other. Previously, all such activity was presented as a separate reportable segment. Our other operating segments, Automotive Finance operations, Insurance operations, and Corporate Finance operations remained reportable operating segments. We allocate costs to our reportable segments in a manner consistent with the methodology updated during the fourth quarter of 2024. Amounts for 2023 and 2022 have been recast to conform to the current CODM view. We report our results of operations on a business-line basis through three operating segments: Automotive Finance operations, Insurance operations, and Corporate Finance operations, with the remaining activity reported in Corporate and Other. The operating segments are determined based on the products and services offered, and reflect the manner in which financial information is currently evaluated by our CODM and management. The following is a description of each of our reportable operating segments. Dealer Financial Services Dealer Financial Services comprises the following two segments. • Automotive Finance operations — One of the largest full-service automotive finance operations in the United States providing automotive financing services to consumers, automotive dealers and retailers, companies, and municipalities. Our automotive finance services include providing retail installment sales contracts, loans and operating leases, offering term loans to dealers, financing dealer floorplans and other lines of credit to dealers, warehouse lines to automotive retailers, fleet financing, providing financing to companies and municipalities for the purchase or lease of vehicles, and vehicle-remarketing services. • Insurance operations — A complementary automotive-focused business offering both consumer finance protection and insurance products sold primarily through the automotive dealer channel, and commercial insurance products sold directly to dealers. As part of our focus on offering dealers a broad range of consumer financial and insurance products, we provide VSCs, VMCs, and GAP products. We also underwrite select commercial insurance coverages, which primarily insure dealers’ vehicle inventory. Corporate Finance operations Our Corporate Finance operations provide senior secured asset-based and leveraged cash flow loans to mostly U.S.-based middle-market companies, with a focus on businesses owned by private equity sponsors. These loans are typically used for leveraged buyouts, refinancing and recapitalizations, mergers and acquisitions, growth, turnarounds, and debtor-in-possession financings. We also provide, through our Lender Finance business, nonbank wholesale-funded managers with partial funding for their direct-lending activities, which is principally leveraged loans. Additionally, we offer a commercial real estate product, primarily focused on lending to skilled nursing facilities, senior housing, and medical office buildings. Corporate and Other Corporate and Other primarily consists of centralized corporate treasury activities, such as management of the cash and corporate investment securities and loan portfolios, short- and long-term debt, retail and brokered deposit liabilities, derivative instruments, original issue discount, and the residual impacts of our corporate FTP and treasury ALM activities. Corporate and Other also includes certain equity investments, which primarily consist of FHLB and FRB stock—as well as other equity investments through Ally Ventures, our strategic investment business, and reclassifications and eliminations between the reportable operating segments. Financial results related to Ally Invest, our digital brokerage and advisory offering, Ally Lending, Ally Credit Card, the management of our consumer mortgage portfolio, and CRA loans and investments are also included within Corporate and Other. On January 20, 2025, we entered into a definitive agreement to divest our credit card business, Ally Credit Card. The transaction is expected to close during the second quarter of 2025, subject to the completion of customary closing conditions. We closed the sale of Ally Lending on March 1, 2024. Refer to Note 2 for additional information. We utilize an FTP methodology for the majority of our business operations. The FTP methodology assigns charge rates and credit rates to classes of assets and liabilities on a match funded basis, utilizing a benchmark rate curve plus an assumed credit spread. The assumed credit spread is calculated based on a composite investment grade unsecured yield curve or based on advance rates published by the FHLB for any asset that is eligible to be pledged as collateral to the FHLB. While the baseline FTP components at Ally assume 100% debt funding, the methodology also incorporates a credit on the allocated capital for each business line based on the business line’s allocated cost of funding. For business lines not subject to an FTP funding allocation, the FTP methodology applies a capital charge to the amount of excess equity that the business line holds, relative to its regulatory capital and other adjustments. The net residual impact of the FTP methodology is included within the results of Corporate and Other. The information presented in our reportable operating segments is based in part on internal allocations and methodologies, including a COH methodology, which involves management judgment. COH methodology is used for measuring the profit and loss of our reportable operating segments. We have various enterprise functions, such as technology, marketing, finance, compliance, internal audit, and risk. Operating expenses from the enterprise functions are either directly allocated to the reportable operating segment, indirectly allocated to the reportable operating segment utilizing the COH methodology, or remain in Corporate and Other. COH methodology considers the reportable operating segment expense base and enterprise function expenses. The reportable operating segment expense base is used to determine the allocation mix. This mix is applied to the allocable expenses in Corporate and Other to determine the COH for the respective reportable operating segment. Allocable enterprise function costs are primarily technology, marketing expenses, and marketing sponsorships. Generally, costs that remain within Corporate and Other that are not allocated to our reportable operating segments include operating costs of deposits, treasury activities, and other corporate activities. Financial information for our reportable operating segments is summarized as follows. Year ended December 31, 2024 ($ in millions) Automotive Finance operations Insurance operations Corporate Finance operations Corporate and Other Consolidated (a) Net financing revenue and other interest income Total financing revenue and other interest income $ 10,473 $ 168 $ 1,006 $ 2,575 $ 14,222 Total interest expense 4,266 54 550 2,602 7,472 Net depreciation expense on operating lease assets 736 — — — 736 Net financing revenue and other interest income 5,471 114 456 (27) 6,014 Other revenue 363 1,507 123 174 2,167 Total net revenue 5,834 1,621 579 147 8,181 Provision for credit losses 1,905 — 8 253 2,166 Noninterest expense Compensation and benefits expense 668 108 80 986 1,842 Insurance losses and loss adjustment expenses — 544 — — 544 Goodwill impairment (b) — — — 118 118 Other operating expenses Technology and communications expenses 129 19 5 285 438 Other (c) 1,316 782 52 87 2,237 Total other operating expenses 1,445 801 57 372 2,675 Total noninterest expense 2,113 1,453 137 1,476 5,179 Income (loss) from continuing operations before income tax expense $ 1,816 $ 168 $ 434 $ (1,582) $ 836 Total assets $ 113,057 $ 9,325 $ 9,704 $ 59,750 $ 191,836 (a) Net financing revenue and other interest income after the provision for credit losses totaled $3.8 billion for the year ended December 31, 2024. (b) Impairment of goodwill related to Ally Credit Card for the year ended December 31, 2024. Refer to Note 13 for additional information. (c) Primarily consists of insurance commissions, advertising and marketing, and property and equipment depreciation expenses. Refer to Note 7 for additional information. Year ended December 31, 2023 ($ in millions) Automotive Finance operations Insurance operations Corporate Finance operations Corporate and Other Consolidated (a) Net financing revenue and other interest income Total financing revenue and other interest income $ 9,721 $ 149 $ 980 $ 3,108 $ 13,958 Total interest expense 3,364 45 550 2,938 6,897 Net depreciation expense on operating lease assets 840 — — — 840 Net financing revenue and other interest income 5,517 104 430 170 6,221 Other revenue 321 1,428 104 160 2,013 Total net revenue 5,838 1,532 534 330 8,234 Provision for credit losses 1,618 — 52 298 1,968 Noninterest expense Compensation and benefits expense 668 108 78 1,047 1,901 Insurance losses and loss adjustment expenses — 422 — — 422 Goodwill impairment (b) — — — 149 149 Other operating expenses Technology and communications expenses 126 18 5 287 436 Other (c) 1,212 768 45 230 2,255 Total other operating expenses 1,338 786 50 517 2,691 Total noninterest expense 2,006 1,316 128 1,713 5,163 Income (loss) from continuing operations before income tax expense $ 2,214 $ 216 $ 354 $ (1,681) $ 1,103 Total assets $ 115,301 $ 9,081 $ 11,212 $ 60,735 $ 196,329 (a) Net financing revenue and other interest income after the provision for credit losses totaled $4.3 billion for the year ended December 31, 2023. (b) Impairment of goodwill related to Ally Lending for the year ended December 31, 2023. Refer to Note 13 for additional information. (c) Primarily consists of insurance commissions expense, advertising and marketing expense, and lease and loan administration expense. Refer to Note 7 for additional information. Year ended December 31, 2022 ($ in millions) Automotive Finance operations Insurance operations Corporate Finance operations Corporate and Other Consolidated (a) Net financing revenue and other interest income Total financing revenue and other interest income $ 7,990 $ 126 $ 546 $ 1,959 $ 10,621 Total interest expense 1,838 42 206 771 2,857 Net depreciation expense on operating lease assets 914 — — — 914 Net financing revenue and other interest income 5,238 84 340 1,188 6,850 Other revenue 306 1,023 122 127 1,578 Total net revenue 5,544 1,107 462 1,315 8,428 Provision for credit losses 1,036 — 43 320 1,399 Noninterest expense Compensation and benefits expense 629 101 75 1,095 1,900 Insurance losses and loss adjustment expenses — 280 — — 280 Other operating expenses Technology and communications expenses 117 17 4 268 406 Other (b) 1,104 735 46 216 2,101 Total other operating expenses 1,221 752 50 484 2,507 Total noninterest expense 1,850 1,133 125 1,579 4,687 Income (loss) from continuing operations before income tax expense $ 2,658 $ (26) $ 294 $ (584) $ 2,342 Total assets $ 111,463 $ 8,659 $ 10,544 $ 61,160 $ 191,826 (a) Net financing revenue and other interest income after the provision for credit losses totaled $5.5 billion for the year ended December 31, 2022. (b) Primarily consists of insurance commissions expense, advertising and marketing expense, and lease and loan administration expense. Refer to Note 7 for additional information.

Parent Company Condensed Financ

Parent Company Condensed Financial Information	12 Months Ended
	Dec. 31, 2024
Condensed Financial Information Disclosure [Abstract]
Parent Company Condensed Financial Information	Parent Company Condensed Financial Information The following tables present standalone condensed financial statements for Ally Financial Inc. (referred to within this section as the Parent). These condensed statements are provided in accordance with SEC rules, which require disclosure when the restricted net assets of consolidated subsidiaries exceed 25% of consolidated net assets, and should be read in conjunction with the Consolidated Financial Statements and the accompanying Notes to the Consolidated Financial Statements. For purposes of these condensed financial statements, the Parent’s wholly owned subsidiaries are presented in accordance with the equity method of accounting. Condensed Statement of Comprehensive Income (Loss) Year ended December 31, ($ in millions) 2024 2023 2022 Net financing loss and other interest income (a) $ (884) $ (945) $ (1,000) Dividends from bank subsidiaries 1,200 1,350 3,150 Dividends from nonbank subsidiaries — 250 1 Total other revenue 134 169 103 Total net revenue 450 824 2,254 Provision for credit losses 8 (14) (32) Total noninterest expense 473 466 665 (Loss) income from continuing operations before income tax benefit and undistributed (loss) income of subsidiaries (31) 372 1,621 Income tax benefit from continuing operations (b) (327) (408) (253) Net income from continuing operations 296 780 1,874 Loss from discontinued operations, net of tax (1) (2) (1) Equity in undistributed earnings of subsidiaries 373 179 (159) Net income 668 957 1,714 Other comprehensive (loss) income, net of tax (108) 243 (3,901) Comprehensive income (loss) $ 560 $ 1,200 $ (2,187) (a) Net financing loss and other interest income is primarily driven by interest expense on long-term debt. (b) There is a significant variation in the customary relationship between pretax income and income tax benefit due to our accounting policy elections and consolidated tax adjustments. The income tax benefit excludes tax effects on dividends from subsidiaries. Condensed Balance Sheet December 31, ($ in millions) 2024 2023 Assets Cash and cash equivalents (a) $ 4,579 $ 3,911 Equity securities 1 16 Finance receivables and loans, net of unearned income 810 1,478 Allowance for loan losses 10 22 Total finance receivables and loans, net 820 1,500 Investments in subsidiaries Bank subsidiaries 13,777 13,629 Nonbank subsidiaries 5,335 4,503 Intercompany receivables from subsidiaries 251 263 Investment in operating leases, net 10 16 Other assets 1,774 1,536 Total assets $ 26,547 $ 25,374 Liabilities and equity Long-term debt (b) $ 11,068 $ 10,427 Interest payable 134 98 Intercompany debt to subsidiaries 1,046 772 Intercompany payables to subsidiaries 39 41 Accrued expenses and other liabilities 357 333 Total liabilities 12,644 11,671 Total equity 13,903 13,703 Total liabilities and equity $ 26,547 $ 25,374 (a) Includes $4.5 billion and $3.9 billion deposited by the Parent at Ally Bank as of December 31, 2024, and 2023, respectively. These funds are available to the Parent for liquidity purposes. (b) Includes $2.0 billion of the outstanding principal balance of senior notes fully and unconditionally guaranteed by subsidiaries of the Parent as of both December 31, 2024, and 2023. Condensed Statement of Cash Flows Year ended December 31, ($ in millions) 2024 2023 2022 Operating activities Net cash provided by operating activities $ 511 $ 879 $ 1,733 Investing activities Proceeds from sales of finance receivables and loans initially held-for-investment 6 1 64 Originations and repayments of finance receivables and loans held-for-investment and other, net (89) (37) (7) Net change in loans — intercompany (51) (290) (65) Proceeds from sales of equity securities — 5 1 Capital contributions to subsidiaries (4) (8) — Returns of contributed capital — 1 52 Net change in nonmarketable equity investments — (2) 8 Other, net (27) (10) (27) Net cash (used in) provided by investing activities (165) (340) 26 Financing activities Proceeds from issuance of long-term debt 2,050 2,410 1,655 Repayments of long-term debt (1,482) (2,087) (1,088) Net change in debt — intercompany 274 227 (496) Repurchase of common stock (38) (33) (1,650) Common stock dividends paid (372) (368) (384) Preferred stock dividends paid (110) (110) (110) Net cash provided by (used in) financing activities 322 39 (2,073) Net increase (decrease) in cash and cash equivalents and restricted cash 668 578 (314) Cash and cash equivalents and restricted cash at beginning of year 3,944 3,366 3,680 Cash and cash equivalents and restricted cash at end of year $ 4,612 $ 3,944 $ 3,366 The following table provides a reconciliation of cash and cash equivalents and restricted cash from the Condensed Balance Sheet to the Condensed Statement of Cash Flows. Year ended December 31, ($ in millions) 2024 2023 Cash and cash equivalents on the Condensed Balance Sheet $ 4,579 $ 3,911 Restricted cash included in other assets on the Condensed Balance Sheet (a) 33 33 Total cash and cash equivalents and restricted cash in the Condensed Statement of Cash Flows $ 4,612 $ 3,944 (a) Restricted cash balances relate primarily to Ally securitization arrangements. Refer to Note 13 for additional details describing the nature of restricted cash balances.

Guarantees and Commitments

Guarantees and Commitments	12 Months Ended
	Dec. 31, 2024
Guarantees and Product Warranties [Abstract]
Guarantees and Commitments	Guarantees and Commitments Guarantees Guarantees are defined as contracts or indemnification agreements that contingently require us to make payments to third-parties based on changes in the underlying agreements with the guaranteed parties. The following summarizes our outstanding guarantees, including those of our discontinued operations, made to third-parties on our Consolidated Balance Sheet, for the periods shown. 2024 2023 December 31, ($ in millions) Maximum liability Carrying value of liability Maximum liability Carrying value of liability Standby letters of credit and other guarantees $ 267 $ — $ 259 $ — Our Corporate Finance operations has exposure to standby letters of credit that represent irrevocable guarantees of payment of specified financial obligations. Third-party beneficiaries primarily accept standby letters of credit as insurance in the event of nonperformance by our borrowers. Our borrowers may request letters of credit under their revolving loan facility up to a certain sub-limit amount. We may also require collateral to be posted by our borrowers. We received $15 million of cash collateral related to these letters of credit at December 31, 2024. Expiration dates on letters of credit range from certain ongoing commitments that will expire during the upcoming year to terms of several years for certain letters of credit. If the beneficiary draws under a letter of credit, we will be liable to the beneficiary for payment of the amount drawn under such letter of credit, with our recourse being a charge to the borrower’s loan facility or transfer of ownership to us of the related collateral. As many of these commitments are subject to borrowing base agreements and other restrictive covenants or may expire without being fully drawn, the stated amounts of the letters of credit are not necessarily indicative of future cash requirements. In connection with our Ally Invest advisory offering, we introduce customer securities accounts to a clearing broker, which clears and maintains custody of all customer assets and account activity. We are responsible for obtaining from each customer funds or securities as are required to be deposited or maintained in their accounts. As a result, we are liable for any loss, liability, damage, cost, or expense incurred or sustained by the clearing broker as a result of the failure of any customer to timely make payments or deposits of securities to satisfy their contractual obligations. In addition, customer securities activities are transacted on either a cash or margin basis. In margin transactions, we may extend credit to the customer, through our clearing broker, subject to various regulatory rules and margin lending practices, collateralized by cash and securities in the customer’s account. In connection with these activities, we also execute customer transactions involving the sale of securities not yet purchased. These transactions may expose us to credit risk in the event the customer’s assets are not sufficient to fully cover losses, which the customer may incur. In the event the customer fails to satisfy its obligations, we will purchase or sell financial instruments in the customer’s account in order to fulfill the customer’s obligations. The maximum potential exposure under these arrangements is difficult to estimate; however, the potential for us to incur material losses pursuant to these arrangements is remote. Commitments Financing Commitments The contractual commitments were as follows. December 31, ($ in millions) 2024 2023 Unused revolving credit line commitments and other (a) (b) $ 10,027 $ 10,658 Commitments to provide capital to investees (c) 1,227 1,191 Construction-lending commitments (d) 166 168 Home equity lines of credit (e) 116 134 Mortgage loan origination commitments (f) — 29 (a) The unused portion of revolving lines of credit reset at prevailing market rates and, approximate fair value. (b) The amount for December 31, 2023, includes $68 million of financing commitments related to Ally Lending, which was classified as operations held-for-sale. We closed the sale of Ally Lending on March 1, 2024. Refer to Note 2 for additional information. (c) We are committed to contribute capital to certain investees. (d) We are committed to fund the remaining unused balance while loans are in the construction period. (e) We are committed to fund the remaining unused balances on home equity lines of credit. (f) Commitments with mortgage loan applicants in which the loan terms, including interest rate and price, are guaranteed for a designated period of time subject to the completion of underwriting procedures. During 2024, we shifted to prioritize held-for-sale loan originations in our mortgage operations. Revolving credit line commitments contain an element of credit risk. We manage the credit risk for unused revolving credit line commitments by applying the same credit policies in making commitments as we do for extending loans. The information presented above excludes the unused portion of commitments that are unconditionally cancelable by us. We had $16.5 billion and $18.7 billion of unfunded commitments related to unconditionally cancelable arrangements at December 31, 2024, and 2023, respectively, which primarily consisted of wholesale floorplan financing and consumer credit card lines. Lease Commitments For details about our future minimum payments under operating leases with noncancelable lease terms, refer to Note 10. Contractual Commitments We have entered into multiple agreements for sponsorship, information technology, voice and communication technology, and related maintenance. Many of the agreements are subject to variable price provisions, fixed or minimum price provisions, and termination or renewal provisions. The following table presents our total future payment obligations expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 255 2026 198 2027 91 2028 42 2029 3 Total future payment obligations $ 589

Contingencies and Other Risks

Contingencies and Other Risks	12 Months Ended
	Dec. 31, 2024
Loss Contingency [Abstract]
Contingencies and Other Risks	Contingencies and Other Risks Concentration with GM and Stellantis While we continue to diversify our automotive finance and insurance businesses, GM and Stellantis dealers and their retail customers continue to constitute a significant portion of our customer base. GM, Stellantis, and their captive finance companies compete vigorously with us and could take further actions that negatively impact the amount of business that we do with GM and Stellantis dealers and their customers. A significant adverse change in GM’s or Stellantis’ business — including, for example, in the production or sale of GM or Stellantis vehicles, the quality or resale value of GM or Stellantis vehicles, GM’s or Stellantis’ relationships with its key suppliers, or the rate or volume of recalls of GM or Stellantis vehicles — could negatively impact our GM and Stellantis dealer and retail customer bases and the value of collateral securing our extensions of credit to them. Any future reductions in GM and Stellantis business that we are not able to offset could adversely affect our business and financial results. Legal Matters and Other Contingencies As a financial-services company, we are regularly involved in pending or threatened legal proceedings and other matters and are or may be subject to potential liability in connection with them. These legal matters may be formal or informal and include litigation and arbitration with one or more identified claimants, certified or purported class actions with yet-to-be-identified claimants, and regulatory or other governmental information-gathering requests, examinations, investigations, and enforcement proceedings. Our legal matters exist in varying stages of adjudication, arbitration, negotiation, or investigation and span our business lines and operations. Claims may be based in law or equity — such as those arising under contracts or in tort and those involving banking, consumer-protection, securities, tax, employment, and other laws — and some can present novel legal theories and allege substantial or indeterminate damages. Ally and its subsidiaries, including Ally Bank, also are or may be subject to potential liability under other contingent exposures, including indemnification, domestic and foreign taxes, self-insurance, and other miscellaneous contingencies. We accrue for a legal matter or other contingent exposure when a loss becomes probable and the amount of loss can be reasonably estimated. Accruals are evaluated each quarter and may be adjusted, upward or downward, based on our best judgment after consultation with counsel. No assurance exists that our accruals will not need to be adjusted in the future. When a probable or reasonably possible loss on a legal matter or other contingent exposure could be material to our consolidated financial condition, results of operations, or cash flows, we provide disclosure in this note as prescribed by ASC Topic 450, Contingencies . Refer to Note 1 for additional information related to our policy for establishing accruals. The course and outcome of legal matters are inherently unpredictable. This is especially so when a matter is still in its early stages, the damages sought are indeterminate or unsupported, significant facts are unclear or disputed, novel questions of law or other meaningful legal uncertainties exist, a request to certify a proceeding as a class action is outstanding or granted, multiple parties are named, or regulatory or other governmental entities are involved. Other contingent exposures and their ultimate resolution are similarly unpredictable for reasons that can vary based on the circumstances. As a result, we often are unable to determine how or when threatened or pending legal matters and other contingent exposures will be resolved and what losses may be incrementally and ultimately incurred. Actual losses may be higher or lower than any amounts accrued or estimated for those matters and other exposures, possibly to a significant degree. Subject to the foregoing, based on our current knowledge and after consultation with counsel, we do not believe that the ultimate outcomes of currently threatened or pending legal matters and other contingent exposures are likely to be material to our consolidated financial condition after taking into account existing accruals. In light of the uncertainties inherent in these matters and other exposures, however, one or more of them could be material to our results of operations or cash flows during a particular reporting period, depending on factors such as the amount of the loss or liability and the level of our income for that period.

Selected Quarterly Financial Da

Selected Quarterly Financial Data (unaudited)	12 Months Ended
	Dec. 31, 2024
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data (unaudited)	Selected Quarterly Financial Data (unaudited) During the fourth quarter of 2024, we elected to change our method of accounting for ITCs from the flow-through method to the deferral method using the retrospective approach, refer to Note 1 for additional information. Accordingly, the financial statements for all quarters during the year ended December 31, 2023, and the first, second and third quarters of 2024 have been retrospectively adjusted from what was previously reported in our Quarterly Reports on Form 10-Q. The change did not have an impact to the Consolidated Financial Statements for any quarter during the year ended December 31, 2022. The following tables summarize the effects of the change in accounting method for select quarterly financial data. December 31, 2024 (a) September 30, 2024 June 30, 2024 March 31, 2024 Three months ended ($ in millions, except per share data) As Reported As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted Consolidated Statement of Income Net depreciation expense on operating lease assets $ 220 $ 201 $ 169 $ 177 $ 155 $ 204 $ 192 Income tax (benefit) expense from continuing operations — (124) 67 (37) 60 14 40 Net income 108 357 198 294 219 157 143 Basic earnings per common share (b) Net income $ 0.26 $ 1.07 $ 0.55 $ 0.87 $ 0.63 $ 0.42 $ 0.38 Diluted earnings per common share (b) Net income $ 0.26 $ 1.06 $ 0.55 $ 0.86 $ 0.62 $ 0.42 $ 0.37 Consolidated Statement of Comprehensive Income (Loss) Comprehensive (loss) income $ (423) $ 973 $ 814 $ 274 $ 199 $ (16) $ (30) (a) During the fourth quarter of 2024, we elected to change our method of accounting for ITCs from the flow-through method to the deferral method, therefore no adjustments are necessary for the three months ended December 31, 2024. (b) Earnings per share is calculated based on unrounded numbers. December 31, 2023 September 30, 2023 June 30, 2023 March 31, 2023 Three months ended ($ in millions, except per share data) As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted Consolidated Statement of Income Net depreciation expense on operating lease assets $ 222 $ 213 $ 212 $ 206 $ 200 $ 196 $ 226 $ 225 Income tax (benefit) expense from continuing operations (13) 10 (68) (51) 74 96 68 89 Net income 76 62 296 285 329 311 319 299 Basic earnings per common share (a) Net income $ 0.16 $ 0.11 $ 0.88 $ 0.85 $ 0.99 $ 0.93 $ 0.96 $ 0.90 Diluted earnings per common share (a) Net income $ 0.16 $ 0.11 $ 0.88 $ 0.84 $ 0.99 $ 0.93 $ 0.96 $ 0.89 Consolidated Statement of Comprehensive Income (Loss) Comprehensive income (loss) $ 1,025 $ 1,011 $ (606) $ (617) $ 242 $ 224 $ 602 $ 582 (a) Earnings per share is calculated based on unrounded numbers. December 31, 2024 (a) September 30, 2024 June 30, 2024 March 31, 2024 ($ in millions) As Reported As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted Consolidated Balance Sheet Investment in operating leases, net $ 7,991 $ 8,318 $ 7,967 $ 8,374 $ 8,126 $ 8,731 $ 8,582 Other assets 10,660 9,907 9,947 9,853 9,949 9,348 9,420 Retained earnings $ 270 $ 595 $ 284 $ 360 $ 208 $ 188 $ 111 (a) During the fourth quarter of 2024, we elected to change our method of accounting for ITCs from the flow-through method to the deferral method, therefore no adjustments are necessary for December 31, 2024. December 31, 2023 September 30, 2023 June 30, 2023 March 31, 2023 ($ in millions) As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted Consolidated Balance Sheet Investment in operating leases, net $ 9,171 $ 9,085 $ 9,569 $ 9,509 $ 9,930 $ 9,890 $ 10,236 $ 10,218 Other assets 9,395 9,418 9,601 9,612 9,153 9,155 9,144 9,142 Retained earnings (accumulated deficit) $ 154 $ 91 $ 197 $ 148 $ 23 $ (15) $ (185) $ (205) Year ended Nine months ended Six months ended Three months ended ($ in millions) As Reported As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted Consolidated Statement of Cash Flows 2024 Operating activities Net income $ 668 $ 808 $ 560 $ 451 $ 362 $ 157 $ 143 Reconciliation of net income to net cash provided by operating activities Depreciation and amortization 1,199 930 864 616 582 322 310 Net change in Deferred income taxes (436) (201) (218) (44) (117) (1) (50) Net cash provided by operating activities 4,528 3,908 3,577 2,916 2,720 1,341 1,266 Investing Activities Disposals of operating lease assets 3,808 2,782 3,113 1,968 2,164 889 964 Net cash provided by investing activities $ 4,991 $ 3,454 $ 3,785 $ 2,394 $ 2,590 $ 3,501 $ 3,576 (a) During the fourth quarter of 2024, we elected to change our method of accounting for ITCs from the flow-through method to the deferral method, therefore no adjustments are necessary for the year ended December 31, 2024. Year ended Nine months ended Six months ended Three months ended ($ in millions) As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted Consolidated Statement of Cash Flows 2023 Operating activities Net income $ 1,020 $ 957 $ 944 $ 895 $ 648 $ 610 $ 319 $ 299 Reconciliation of net income to net cash provided by operating activities Depreciation and amortization 1,247 1,227 923 912 613 608 317 316 Net change in Deferred income taxes (58) (81) (62) (73) 53 51 24 26 Net cash provided by operating activities 4,663 4,557 4,680 4,609 3,020 2,975 1,432 1,413 Investing Activities Disposals of operating lease assets 3,122 3,228 2,384 2,455 1,580 1,625 706 725 Net cash used in investing activities $ (7,288) $ (7,182) $ (4,215) $ (4,144) $ (2,480) $ (2,435) $ (382) $ (363)

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2024
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Declaration of Common Dividend On January 16, 2025, our Board declared a quarterly cash dividend of $0.30 per share on all common stock. The dividend was paid on February 14, 2025, to shareholders of record at the close of business on January 31, 2025. Divestiture of Ally Credit Card On January 20, 2025, we formally approved our commitment to divest our credit card business, Ally Credit Card, and entered into a definitive agreement with CardWorks, Inc. The transaction is expected to close during the second quarter of 2025, subject to the completion of customary closing conditions. Ceasing Mortgage Originations In January 2025, we announced that we will no longer accept mortgage applications after January 31, 2025. Consumer mortgage originations will cease during the second quarter of 2025, which will result in a gradual run-off of our remaining consumer mortgage loan portfolio.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pay vs Performance Disclosure
Net income	$ 108	$ 198	$ 219	$ 143	$ 62	$ 285	$ 311	$ 299	$ 362	$ 610	$ 560	$ 895	$ 668	$ 957	$ 1,714

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Dec. 31, 2024
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

Insider Trading Policies and Pr

Insider Trading Policies and Procedures	12 Months Ended
	Dec. 31, 2024
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

Cybersecurity Risk Management a

Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
	Dec. 31, 2024
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	Information technology/cybersecurity/data is one of our primary risks, which we define as risks resulting from the failure of, or insufficiency in, information technology (for example, a system outage) or intentional or accidental unauthorized access, sharing, removal, tampering, or disposal of company and customer data or records (for example, a cybersecurity incident), or the lack of data governance, the mismanagement of data, or poor data privacy and protection. We and our service providers rely extensively on digital communications, data management, and other operating systems and infrastructure to conduct our business and operations. Disruptions to these systems or their infrastructure from cyberattacks, or failures in the management of information underlying these systems, may impede our ability to conduct business and operations and may result in business, reputational, financial, regulatory, or other harm. We and other financial institutions continue to be the target of various cyberattacks, including through phishing, the introduction of malware, denial-of-service, or other means. These cyberattacks often are intended to disrupt the operations of financial institutions or obtain confidential, proprietary, or other information or assets of Ally, our customers, employees, or other third parties with whom we transact. Refer to the Risk Factors section for additional information on our information technology/cybersecurity/data risks. Information technology/cybersecurity/data risk management is part of our broader enterprise risk-management framework described earlier in Risk Management , including the multiple layers of defense described there. We seek to minimize the occurrence and impact of unauthorized access, disruption, alteration, poor privacy or protection, mismanagement or compromise of our systems and information through real-time review and monitoring of applicable risk exposures and the implementation of processes and controls to manage those risks. In addition, we make investments in people, processes, and technology to assist us in our efforts to prevent, monitor, and respond to incidents. More specifically, information technology/cybersecurity operational metrics and data are monitored on an ongoing basis and assessed against established risk-appetite limits. An inventory of information technology/cybersecurity/data processes, risks, and controls is maintained, which is derived utilizing regulatory and industry guidance, including the Federal Financial Institutions Examination Council Information Technology Examination Handbook and the National Institute of Standards and Technology Cybersecurity Framework. This inventory is used to assist in the identification and assessment of information technology/cybersecurity/data risks. In addition, information protection and risk management teams managed by our CISO are responsible for the administration, governance, and ongoing assessment of information technology/cybersecurity/data risks that pertain to their areas of responsibility. We have adopted a CSRP, which provides a structured approach for our response to cybersecurity incidents. The CSRP describes internal roles and responsibilities and describes the operational coordination among internal cybersecurity teams, application owners, business partners and other stake holders to detect, track, respond to, and escalate cybersecurity incidents promptly, mitigate the impact of them, and resume normal operations. When cybersecurity events merit escalation beyond the CSRP, they are managed at the enterprise level via Ally’s EIMT. Further escalation to Ally’s ECMT may occur based on severity of the event, as appropriate. The Response Team Operations Plans for both EIMT and ECMT address all hazards and include responsibilities for applicable disclosure. We regularly assess threats and vulnerabilities to our environment utilizing various resources including independent third-party assessments to evaluate the effectiveness of our layered system of controls. This includes routinely engaging third-party experts to perform comprehensive institutional-wide simulations for senior management, which evaluates our preparedness to respond to crisis-level events, including cybersecurity incidents. Third parties are also engaged to conduct cybersecurity penetration testing to assist us in identifying system vulnerabilities. We actively partner with other industry peers in order to share knowledge and information to further our security environment and invest in training and employee awareness regarding cyber-related risks. Our business lines are actively engaged in overseeing our third-party service providers. Our Enterprise TPRM Policy establishes requirements and practices used to oversee and manage the activities of third parties with whom Ally has a relationship, under which we identify, measure, monitor, and manage third-party risk (including information technology/cybersecurity risks) in alignment with our strategic objectives and in compliance with applicable law. Any identified threats, vulnerabilities, or cybersecurity incidents are addressed as appropriate through the CSRP or our business-continuity and crisis-management plans, as described earlier. Cybersecurity and the continued enhancement of our controls, processes, and systems to protect our technology and data infrastructure, customer information, and other proprietary information or assets remain a critical and ongoing priority. We recognize that cyber-related risks continue to evolve, including through the emergence of artificial intelligence, and have become increasingly sophisticated. As a result we continuously evaluate the adequacy of our preventive and detective measures. As a further protective measure, we maintain insurance coverage that, subject to terms and conditions, may cover certain aspects of cybersecurity and information risks. However, such insurance may not be sufficient to cover all losses, and there is no guarantee that such insurance will continue to be available to us on acceptable terms, if at all. We have not identified risks from cybersecurity threats, including as a result of any previous cybersecurity incidents, that have materially affected or are reasonably likely to materially affect, Ally or its business strategy, results of operations, or financial condition. However, we face ongoing cybersecurity threats and there can be no assurances we will not be materially impacted in the future. Refer to the Risk Factors section for additional information.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	Information technology/cybersecurity/data risk management is part of our broader enterprise risk-management framework described earlier in Risk Management , including the multiple layers of defense described there. We seek to minimize the occurrence and impact of unauthorized access, disruption, alteration, poor privacy or protection, mismanagement or compromise of our systems and information through real-time review and monitoring of applicable risk exposures and the implementation of processes and controls to manage those risks. In addition, we make investments in people, processes, and technology to assist us in our efforts to prevent, monitor, and respond to incidents. More specifically, information technology/cybersecurity operational metrics and data are monitored on an ongoing basis and assessed against established risk-appetite limits. An inventory of information technology/cybersecurity/data processes, risks, and controls is maintained, which is derived utilizing regulatory and industry guidance, including the Federal Financial Institutions Examination Council Information Technology Examination Handbook and the National Institute of Standards and Technology Cybersecurity Framework. This inventory is used to assist in the identification and assessment of information technology/cybersecurity/data risks. In addition, information protection and risk management teams managed by our CISO are responsible for the administration, governance, and ongoing assessment of information technology/cybersecurity/data risks that pertain to their areas of responsibility.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	Our Board is actively involved in the oversight of Ally’s information technology/cybersecurity/data risk-management program, including through the RC and TC. The RC has primary oversight responsibility for our risk-management framework and sets the risk appetite across Ally. The TC assists the Board in overseeing information-technology, information-security (including cybersecurity), and data risks, and our management of the risks commensurate with our structure, risk profile, complexity, activities, and size. To this end, the TC periodically reviews and approves policies addressing information-technology, information-security, and data risks, and reviews reports and trends on these risks—including those involving cybersecurity, data management and protection, and crisis management—and receives reports from management on its actions to assess, monitor, and control them. The RC reviews reports and other information from the TC in approving our information-technology, information-security, and data risk appetite, and in exercising oversight of our independent risk-management program. Senior management briefs the RC, the TC, or the Board on information-technology, information-security, and data risk matters at least quarterly and identified cybersecurity incidents are reported to the Board as deemed appropriate pursuant to our business-continuity and crisis-management plans.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	Our Board is actively involved in the oversight of Ally’s information technology/cybersecurity/data risk-management program, including through the RC and TC. The RC has primary oversight responsibility for our risk-management framework and sets the risk appetite across Ally. The TC assists the Board in overseeing information-technology, information-security (including cybersecurity), and data risks, and our management of the risks commensurate with our structure, risk profile, complexity, activities, and size.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	The RC has primary oversight responsibility for our risk-management framework and sets the risk appetite across Ally. The TC assists the Board in overseeing information-technology, information-security (including cybersecurity), and data risks, and our management of the risks commensurate with our structure, risk profile, complexity, activities, and size. To this end, the TC periodically reviews and approves policies addressing information-technology, information-security, and data risks, and reviews reports and trends on these risks—including those involving cybersecurity, data management and protection, and crisis management—and receives reports from management on its actions to assess, monitor, and control them. The RC reviews reports and other information from the TC in approving our information-technology, information-security, and data risk appetite, and in exercising oversight of our independent risk-management program. Senior management briefs the RC, the TC, or the Board on information-technology, information-security, and data risk matters at least quarterly and identified cybersecurity incidents are reported to the Board as deemed appropriate pursuant to our business-continuity and crisis-management plans.
Cybersecurity Risk Role of Management [Text Block]	Risk-oriented management committees, the executive leadership team, and our associates identify and monitor current and emerging risks and manage those risks within our risk appetite. More specifically, our ERMC is responsible for supporting the Chief Risk Officer’s oversight of senior management’s responsibility to execute on our strategy within our risk appetite set by the RC, and the Chief Risk Officer’s implementation of our independent risk-management. Our Technology and Security Risk Management Committee and Data Risk Management Committee, which report to our ERMC, provide oversight of senior management’s responsibility to manage and measure information technology/cybersecurity/data risks against the established risk appetite and monitors compliance with legal requirements and regulatory commitments. For additional information on the role of management in monitoring the prevention, detection, mitigation, and remediation of cybersecurity incidents, refer to the Risk Management and Strategy section above.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	Our CIDDO, who brings to Ally more than 20 years of technology leadership experience in complex businesses, is responsible for overseeing all of Ally’s technical and digital capabilities, including cybersecurity and infrastructure. Our CISO, who reports to the CIDDO, is principally responsible for managing and implementing our cybersecurity program.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	Our CIDDO, who brings to Ally more than 20 years of technology leadership experience in complex businesses, is responsible for overseeing all of Ally’s technical and digital capabilities, including cybersecurity and infrastructure. Our CISO, who reports to the CIDDO, is principally responsible for managing and implementing our cybersecurity program. Our CIDDO and CISO collectively possess substantial expertise in the areas of information technology, information security, cybersecurity, and data risk management. Our CISO, who has over 27 years of experience within the financial-services industry, is supported by employees involved in the management of information security/cybersecurity/data risks that possess experience across a variety of areas.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	Senior management briefs the RC, the TC, or the Board on information-technology, information-security, and data risk matters at least quarterly and identified cybersecurity incidents are reported to the Board as deemed appropriate pursuant to our business-continuity and crisis-management plans.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

Description of Business, Basi_2

Description of Business, Basis of Presentation, and Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Consolidation	The Consolidated Financial Statements include the accounts of the parent and its consolidated subsidiaries, of which it is deemed to possess control, after eliminating intercompany balances and transactions, and include all VIEs in which we are the primary beneficiary. Refer to Note 11 for further details on our VIEs. Other entities in which we have invested and have the ability to exercise significant influence over operating and financial policies of the investee, but upon which we do not possess control, are accounted for using the equity method of accounting within the financial statements and are therefore not consolidated.
Basis of Presentation	Our accounting and reporting policies conform to U.S. GAAP and, where applicable, the policies conform to the accounting and reporting guidelines prescribed by bank regulatory authorities. Certain reclassifications have been made to the prior periods’ financial statements and notes to conform to the current period’s presentation. Refer to the section below titled Change in Accounting Principle for further details on our method of accounting for ITCs, and Note 26 for further details on our change in allocation of costs to reportable segments and change in reportable segments. Additionally, certain other reclassifications may have been made to the prior periods’ financial statements and notes to conform to the current period’s presentation, which did not have a material impact on our Consolidated Financial Statements.
Use of Estimates and Assumptions	Use of Estimates and Assumptions The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the related disclosure, including those of contingent assets and liabilities at the date of the financial statements. It also includes estimates related to the income and expenses during the reporting period and the related disclosures. In developing the estimates and assumptions, management uses all available evidence; however, actual results could differ because of uncertainties associated with estimating the amounts, timing, and likelihood of possible outcomes. Our most significant estimates pertain to the allowance for loan losses, the valuations of automotive operating lease assets and residuals, the fair value of financial instruments, and the determination of the provision for income taxes.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include cash on hand, cash on deposit at other financial institutions, cash items in process of collection, and certain highly liquid investments with original maturities of three months or less from the date of purchase. The book value of cash equivalents approximates fair value because of the short maturities of these instruments and the insignificant risk they present to changes in value with respect to changes in interest rates. We may hold securities with original maturities of three months or less from the date of purchase that are held as part of a longer-term investment strategy and classify them as investment securities. We also hold cash and cash equivalents with legal restrictions limiting our ability to withdraw and use the funds. This includes restricted cash held for securitization trusts and restricted cash and cash equivalents, which are presented as other assets on our Consolidated Balance Sheet.
Investment Securities	Investment Securities Our investment securities portfolio includes various debt securities. Debt securities are classified based on management’s intent to sell or hold the security. We classify debt securities as held-to-maturity only when we have both the intent and ability to hold the securities to maturity. We classify debt securities as trading when the securities are acquired for the purpose of selling or holding them for a short period of time. Debt securities not classified as either held-to-maturity or trading are classified as available-for-sale. Available-for-sale securities are carried at fair value with unrealized gains and losses included in accumulated other comprehensive income, while our held-to-maturity securities are carried at amortized cost. We establish an allowance for credit losses for lifetime expected credit losses on our held-to-maturity securities, as necessary. The estimate of expected credit losses considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. Accrued interest receivable on held-to-maturity securities is excluded from the estimate of credit losses. Our held-to-maturity securities portfolio is mostly composed of U.S. government (issued by U.S. government entities or agencies) and non-agency mortgage-backed residential debt securities. U.S. government securities are either explicitly or implicitly guaranteed by the U.S. government, are highly rated by major ratings agencies, and have a long history of zero credit losses and therefore generally do not require an allowance for credit losses. We regularly assess our available-for-sale securities for impairment. When the amortized cost basis of an available-for-sale security exceeds its fair value, the security is impaired. If we determine that we intend to sell, or it is more likely than not that we will be required to sell the security before recovery of the amortized cost basis, any previously recorded allowance for credit losses is written off and the security’s amortized cost basis is written down to fair value at the reporting date, with any incremental impairment recorded through earnings. Alternatively, if we do not intend to sell, or it is not more likely than not that we will be required to sell the security before anticipated recovery of the amortized cost basis, we evaluate, among other factors, the magnitude of the decline in fair value, the financial health of and business outlook for the issuer, and the performance of the underlying assets for interests in securitized assets to determine if a credit loss has occurred. The present value of expected future cash flows are compared to the security’s amortized cost basis to measure the credit loss component of the impairment after determining a credit loss has occurred. If the present value of expected cash flows is less than the amortized cost basis, we record an allowance for credit losses for that difference. The amount of credit loss is limited to the difference between the security’s amortized cost basis and its fair value. Accrued interest receivable on available-for-sale securities is excluded from the estimate of credit losses. Any remaining impairment that is due to factors other than a credit loss, such as changes in market interest rates, is recorded in other comprehensive income. Changes in the allowance for credit losses are recorded as provision for, or reversal of, provision for credit losses. Premiums and discounts on debt securities are generally amortized over the stated maturity of the security as an adjustment to investment yield. Premiums on debt securities that have non-contingent call features that are callable at fixed prices on preset dates are amortized to the earliest call date as an adjustment to investment yield. A debt security is generally placed on nonaccrual status at the time any principal or interest payments become 90 days past due. The receivable for interest income that is accrued but not collected is reversed against interest income when the debt security is placed on nonaccrual status. Realized gains and losses on the sale of debt securities are determined using the specific identification method and are reported in other gain (loss) on investments, net in our Consolidated Statement of Income.
Equity Securities and Nonmarketable Equity Investments	Equity Securities and Nonmarketable Equity Investments Equity securities that have a readily determinable fair value are recorded at fair value with changes in fair value recorded in earnings and reported in other gain (loss) on investments, net in our Consolidated Statement of Income. These investments are included in equity securities on our Consolidated Balance Sheet. In some instances, we may account for equity securities using the net asset value practical expedient to estimate fair value. Realized gains and losses on the sale of equity securities with a readily determinable fair value and equity securities measured using the net asset value practical expedient are determined using the specific identification method and are reported in other gain (loss) on investments, net in our Consolidated Statement of Income. Refer to Note 24 for further information on equity securities that are held at fair value. Our nonmarketable equity investments include investments in FHLB and FRB stock held to meet regulatory requirements and other equity investments that do not have a readily determinable fair value. Our investments in FHLB and FRB stock are carried at cost, less impairment, if any. Our remaining nonmarketable equity investments are recorded at cost, less impairment and adjusted for observable price changes under the measurement alternative provided under U.S. GAAP. These investments, along with our investments in FHLB and FRB stock, are included in nonmarketable equity investments in other assets on our Consolidated Balance Sheet. Investments recorded under the measurement alternative are also reviewed at each reporting period to determine if any adjustments are required for observable price changes in identical or similar securities of the same issuer. As conditions warrant, we review these investments, as well as investments in FHLB and FRB stock, for impairment and adjust the carrying value of the investment if it is deemed to be impaired. Adjustments related to observable price changes or impairment on securities using the measurement alternative and FHLB and FRB stock are recorded in earnings and reported in other income, net of losses in our Consolidated Statement of Income. Realized gains and losses on the sale of nonmarketable equity investments are also recorded in earnings and reported in other income, net of losses in our Consolidated Statement of Income.
Finance Receivables and Loans	Finance Receivables and Loans We initially classify finance receivables and loans as either loans held-for-sale or loans held-for-investment based on management’s assessment of our intent and ability to hold the loans for the foreseeable future or until maturity. Management’s view of the foreseeable future is based on the longest reliable forecasted period, including events known when performing periodic evaluations. Management’s intent and ability with respect to certain loans may change from time to time depending on a number of factors, for example, economic, liquidity, and capital conditions. In order to reclassify loans to held-for-sale, management must have the intent to sell the loans and must reasonably identify the specific loans to be sold. Loans classified as held-for-sale are presented as loans held-for-sale, net on our Consolidated Balance Sheet and are carried at the lower of their net carrying value or fair value, unless the fair value option was elected, in which case those loans are carried at fair value. For loans originated as held-for-sale for which we have not elected the fair value option, loan origination fees and costs are included in the initial carrying value. For held-for-sale loans for which we have elected the fair value option, loan origination fees and costs are recognized in earnings when earned or incurred. We have elected the fair value option for mortgage direct-to-consumer originations for which we have a commitment to sell. The interest rate lock commitment that we enter into for a mortgage loan originated as held-for-sale and certain forward commitments are considered derivatives, which are carried at fair value on our Consolidated Balance Sheet. We have elected the fair value option to measure our nonderivative forward commitments. Changes in the fair value of our interest rate lock commitments, derivative forward commitments, and nonderivative forward commitments related to mortgage loans originated as held-for-sale, as well as changes in the carrying value of loans classified as held-for-sale, are reported through gain on mortgage and automotive loans, net in our Consolidated Statement of Income. Interest income on our loans classified as held-for-sale is recognized based upon the contractual rate of interest on the loan and the unpaid principal balance. We report accrued interest receivable on our loans classified as held-for-sale in other assets on our Consolidated Balance Sheet. Loans classified as held-for-investment are presented as finance receivables and loans, net on our Consolidated Balance Sheet. Finance receivables and loans are reported at their amortized cost basis, which includes the principal amount outstanding, net of unamortized deferred fees and costs on originated loans, unamortized premiums and discounts on purchased loans, unamortized basis adjustments arising from the designation of finance receivables and loans as the hedged item in qualifying fair value hedge relationships, and cumulative principal net charge-offs. We refer to the amortized cost basis less the allowance for loan losses as the net carrying value in finance receivables and loans. Unearned rate support received from automotive manufacturers on certain automotive loans, deferred origination fees and costs, and premiums and discounts on purchased loans, are amortized over the contractual life of the related finance receivable or loan using the effective interest method. We make various incentive payments for consumer automotive loan originations to automotive dealers and account for these payments as direct loan origination costs. Additionally, we make incentive payments to certain commercial automobile wholesale borrowers and account for these payments as a reduction to interest income in the period they are earned. Interest income on our finance receivables and loans is recognized based on the contractual rate of interest plus the amortization of deferred amounts using the effective interest method, except for origination fees and costs on our credit card loans, which amortize on a straight line basis over a twelve-month period. In addition, annual fees on credit cards are amortized into other income, net of losses over a twelve-month period. We report accrued interest receivable on our finance receivables and loans in other assets on our Consolidated Balance Sheet, except for billed interest on our credit card loans, which is included in finance receivables and loans, net. Loan commitment fees are generally deferred and amortized over the commitment period. For information on finance receivables and loans, refer to Note 9. We have elected to exclude accrued interest receivable from the measurement of our allowance for loan losses for each class of financing receivables, except for billed interest on our credit card loans, which is included in finance receivables and loans, net. We have also elected to write-off accrued interest receivable by reversing interest income when loans are placed on nonaccrual status for each class of finance receivable. This includes the reversal of the billed interest on credit card loans that occurs at the time of charge-off, which is initially included in the measurement of our allowance for loan losses. Our portfolio segments are based on the level at which we develop and document our methodology for determining the allowance for loan losses. Additionally, the classes of finance receivables are based on several factors, including the method for monitoring and assessing credit risk, the method of measuring carrying value, and the risk characteristics of the finance receivable. Based on an evaluation of our process for developing the allowance for loan losses, including the nature and extent of exposure to credit risk arising from finance receivables, we have determined our portfolio segments to be consumer automotive, consumer mortgage, consumer other, and commercial. • Consumer automotive — Consists of retail automotive financing for new and used vehicles. • Consumer mortgage — Consists of consumer first-lien mortgages, subordinate-lien mortgages, and home equity mortgages. • Consumer other — Consists of the following classes of finance receivables. • Personal Lending — Consists of unsecured consumer lending from point-of-sale financing. On March 1, 2024, we closed the sale of our point-of-sale financing business. Refer to Note 2 for further information. • Credit Card — Consists of consumer credit card loans. • Commercial — Consists of the following classes of finance receivables. ◦ Commercial and Industrial ▪ Automotive — Consists of financing operations to fund dealer purchases of new and used vehicles through wholesale floorplan financing. Additional commercial offerings include automotive dealer term loans, revolving lines, and dealer fleet financing. ▪ Other — Consists primarily of senior secured asset-based and leveraged cash flow loans related to our corporate-finance business. ◦ Commercial Real Estate — Consists of term loans primarily secured by dealership land and buildings, and other commercial lending secured by real estate. Nonaccrual Loans Generally, we recognize loans of all classes as past due when they are 30 days delinquent on making a contractually required payment, and loans are placed on nonaccrual status when principal or interest has been delinquent for at least 90 days, or when full collection is not expected. Interest income recognition is suspended when finance receivables and loans are placed on nonaccrual status. Additionally, amortization of premiums and discounts and deferred fees and costs ceases when finance receivables and loans are placed on nonaccrual. Exceptions include commercial real estate loans that are placed on nonaccrual status when delinquent for 60 days or when full collection is not probable, if sooner. Additionally, a loan can be returned to accrual status when the loan has been brought fully current, the collection of contractual principal and interest is reasonably assured, and six consecutive months of repayment performance is achieved. In certain cases, if a borrower has been current up to the time of a modification and repayment of the debt subsequent to the modification is reasonably assured, we may choose to continue to accrue interest on the loan. Nonperforming loans on nonaccrual status are reported in Note 9. For all our portfolio segments, the receivable for interest income that is accrued, but not collected, at the date finance receivables and loans are placed on nonaccrual status is reversed against interest income and subsequently recognized only to the extent it is received in cash or until it qualifies for return to accrual status. However, for credit card loans, billed interest is included in the receivables balance and therefore is not reversed against interest income until the loan is charged-off. Where there is doubt regarding the ultimate collectability of loan principal, all cash received is applied to reduce the carrying value of such loans. Generally, finance receivables and loans are restored to accrual status only when contractually current and the collection of future payments is reasonably assured. Modifications of Loans with Borrowers Experiencing Financial Difficulty On January 1, 2023, we implemented ASU 2022-02, Financial Instruments — Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures . This guidance eliminates the concept of TDRs and adds new disclosure requirements related to loan modifications and gross charge offs. We implemented the ASU on a prospective basis. We may provide a modification to a borrower who is experiencing financial difficulty if we believe they have the ability and are willing to repay their loan. The type of modification granted will vary depending on our credit risk management practices, as well as the borrower’s financial condition and the characteristics of the loan, including the unpaid balance, the underlying collateral, and the number or types of previous modifications granted. Modifications that we make subject to the financial difficulty disclosure requirements include payment extensions, principal forgiveness, and/or interest rate concessions. These modifications generally reduce the borrower’s periodic payment amount. The following is a description of each of these types of modifications. • Payment extensions — Payment extensions include both payment deferrals and contractual maturity extensions. Deferral arrangements allow borrowers to delay a scheduled loan payment to a later date. Deferred loan payments do not affect the original contractual terms of the loan and the contractual maturity date of the loan remains unchanged. Deferrals also include certain forbearance agreements. Within the commercial loan portfolio, deferrals primarily reflect a deferral of interest payments. Under a contractual maturity extension agreement, the last payment date is extended to a future date, contractually lengthening the remaining term of the original loan. • Principal forgiveness — Under principal forgiveness, the outstanding principal balance of a loan is reduced by a specified amount. Principal forgiveness may occur voluntarily as part of a negotiated agreement with a borrower, or involuntarily through a bankruptcy proceeding. Under these involuntary instances, the bankruptcy court in a Chapter 11 or 13 proceeding may order us to reduce the outstanding principal balance of the loan to a specified amount. • Interest rate concessions — Interest rate concessions adjust the contractual interest rate of the loan to a rate that is not consistent with a market rate for a customer with similar credit risk. • Combination — Combination includes loans that have undergone multiple of the above loan modification types. This primarily includes rewritten loans where we grant an interest rate concession and a contractual maturity extension. Significant judgment is required to determine if a borrower is experiencing financial difficulty. These considerations vary by portfolio class. In all cases, the cumulative impacts of all modifications made within the 12-month period before the current modification are considered at the time of the most recent modification. For consumer loans of all classes, various qualitative factors are used for assessing the financial difficulty of the borrower. These factors include, but are not limited to, the borrower’s default status on any of its debts, bankruptcy, and recent changes in financial circumstances (for instance, loss of employment). For commercial loans of all classes, similar qualitative factors are considered when assessing the financial difficulty of the borrower. In addition to the previously noted factors, consideration is also given to the borrower’s forecasted ability to service the debt in accordance with the contractual terms, possible regulatory actions, and other potential business disruptions (for example, the loss of a significant customer or other revenue stream). In our consumer automotive portfolio class of loans, we also provide extensions or deferrals of payments to borrowers whom we deem to be experiencing only temporary financial difficulty. In these cases, there are limits within our operational policies to minimize the number of times a loan can be extended, as well as limits to the length of each extension, including a cumulative cap over the life of the loan. If these limits are breached, the modification may require disclosure as noted in the following paragraph. Before offering an extension or deferral, we evaluate the capacity of the customer to make the scheduled payments after the deferral period. During the deferral period, we continue to accrue interest on the loan as part of the deferral agreement. We grant these extensions or deferrals when we expect to collect all amounts due including interest accrued at the original contract rate. We do not disclose modifications that result in only an insignificant payment delay. In order to assess whether a payment delay is insignificant, we consider the amount of the modified payments subject to delay in conjunction with the unpaid principal balance or the collateral value of the loan, whether or not the delay is significant with respect to the frequency of payments under the original contract, or the loan’s original expected duration. In the cases where payment extensions cumulatively extend beyond 90 days and are more than 10% of the original contractual term, or where the cumulative payment extension within the 12-month period immediately preceding the current modification is beyond 180 days, we deem the delay in payment to be more than insignificant. The financial impacts of modifications that meet the definition of a modification to borrowers experiencing financial difficulty are reported in the period in which they are identified. Additionally, if such a loan defaults within 12 months of the modification, we are required to disclose the instances of redefault. A loan is considered to have redefaulted when the loan meets the requirements for evaluation under our charge-off policy, except for commercial loans where redefault is defined as 90 days past due. Net Charge-offs We disclose the measurement of net charge-offs as the amount of gross charge-offs recognized less recoveries received. Gross charge-offs reflect the amount of the amortized cost basis directly written-off. Generally, we recognize recoveries when they are received and record them as an increase to the allowance for loan losses. As a general rule, consumer automotive loans are fully charged off once a loan becomes 120 days past due. In instances where upon becoming 120 days past due repossession is assured and in process, consumer automotive loans are written down to estimated collateral value, less costs to sell. In our consumer mortgage portfolio segment, first-lien mortgages and a subset of our home equity portfolio that are secured by real estate in a first-lien position are written down to the estimated fair value of the collateral, less costs to sell, once a mortgage loan becomes 180 days past due. Consumer mortgage loans that represent second-lien positions are charged off at 180 days past due. In our consumer other segment, loans in our credit card class of receivables are charged off at 180 days past due. Prior to being transferred to held-for-sale on December 31, 2023, loans within our personal lending class of receivables were charged off at 120 days past due. Within 60 days of receipt of notification of filing from the bankruptcy court, or within the time frames noted above, consumer automotive and first-lien consumer mortgage loans in bankruptcy are written down to their expected future cash flows, which is generally fair value of the collateral, less costs to sell, and second-lien consumer mortgage loans and other consumer loans are fully charged-off, unless it can be clearly demonstrated that repayment is likely to occur. Regardless of other timelines noted within this policy, loans are considered collateral dependent when the borrower is experiencing financial difficulty and repayment of the loan is expected to only be through sale or operation of the collateral. Collateral dependent loans are charged-off to the estimated fair value of the underlying collateral, less costs to sell when foreclosure or repossession proceedings begin. Commercial loans are individually evaluated and are written down to the estimated fair value of the collateral less costs to sell when collectability of the recorded balance is in doubt. Generally, all commercial loans are charged-off when it becomes unlikely that the borrower is willing or able to repay the remaining balance of the loan and any underlying collateral is not sufficient to recover the outstanding principal. Collateral dependent loans are charged-off to the fair market value of collateral less costs to sell when appropriate. Non-collateral dependent loans are fully charged-off. Allowance for Loan Losses The allowance for loan losses (the allowance) is deducted from, or added to, the loan’s amortized cost basis to present the net amount expected to be collected from our lending portfolios. We estimate the allowance using relevant available information, which includes both internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Additions and reductions to the allowance are charged to current period earnings through the provision for credit losses and amounts determined to be uncollectible are charged directly against the allowance, net of amounts recovered on previously charged-off accounts. Expected recoveries do not exceed the total of amounts previously charged-off and amounts expected to be charged-off. Expected credit losses are estimated over the contractual term of the loans, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions or renewals, unless the extension or renewal option is included in the original or modified contract at the reporting date and we are not able to unconditionally cancel the option. Expected loan modifications are also not included in the contractual term, unless we have a reasonable expectation at period end that the loan modification will be executed with a borrower. For the purpose of calculating portfolio-level reserves, we have grouped our loans into four portfolio segments: consumer automotive, consumer mortgage, consumer other, and commercial. The allowance is measured on a collective basis using statistical models when loans have similar risk characteristics. These statistical models are designed to correlate certain macroeconomic variables to expected future credit losses. The macroeconomic data used in the models are based on forecasted factors over a reasonable and supportable forecast period. These forecasted variables are derived from both internal and external sources. Beyond this forecasted period, we revert each variable to a historical average on a straight-line basis. The historical average is calculated predominantly using historical data beginning in January 2008 through the most recent period of available data. During the second quarter of 2024, we updated our reasonable and supportable forecast period from 12 months to 24 months, and our reversion period from 24 months to 12 months. This refinement to our estimation process represented a change in accounting estimate, with prospective application beginning in the period of change. The impact of this refinement to our estimation process was offset by an adjustment in the qualitative portion of our allowance. The use of a longer-duration reasonable and supportable macroeconomic forecast period to produce the modeled portion of our allowance for loan losses is expected to further improve model performance. Loans that do not share similar risk characteristics are evaluated on an individual basis and are not included in the collective evaluation. The allowance calculation is supplemented with qualitative adjustments that take into consideration current portfolio and asset-level factors, such as the impacts of changes in underwriting standards, collections and account management effectiveness, geographic concentrations, and economic events that have occurred but are not yet reflected in the quantitative model component. Qualitative adjustments are documented, reviewed, and approved through our established risk governance processes and follow regulatory guidance. Management also considers the need for a reserve on unfunded loan commitments across our portfolio segments, including lines of credit and standby letters of credit. We estimate expected credit losses over the contractual period in which we are exposed to credit risk, unless we have the option to unconditionally cancel the obligation. Expected credit losses on the commitments include consideration of the likelihood that funding will occur under the commitment and an estimate of expected credit losses on amounts expected to be funded over the estimated life. The reserve for unfunded loan commitments is recorded within accrued expenses and other liabilities on our Consolidated Balance Sheet. Provision for credit losses related to our reserve for unfunded commitments is recorded within provision for credit losses on our Consolidated Statement of Income. Refer to Note 28 for information on our unfunded loan commitments. Consumer Automotive The allowance within the consumer automotive portfolio segment is calculated using proprietary statistical models and other risk indicators applied to pools of loans with similar risk characteristics, including credit bureau score and LTV ratios. The model generates projections of default rates, prepayment rates, loss severity rates, and recovery rates using macroeconomic and historical loan data. These projections are used to develop transition scenarios to predict the portfolio’s migration from the current or past-due status to various future states over the life of the loan. While the macroeconomic data that is used to calculate expected credit losses includes light vehicle sales and state-level real personal income, state-level unemployment rates are the most impactful macroeconomic factors in calculating expected lifetime credit losses. The loss severity within the consumer automotive portfolio segment is impacted by the market values of vehicles that are repossessed. Vehicle market values are affected by numerous factors including vehicle supply, the condition of the vehicle upon repossession, the overall price and volatility of fuel, consumer preference related to specific vehicle segments, and other factors. The model output is aggregated to calculate expected lifetime gross credit losses, net of expected recoveries. Consumer Mortgage The allowance within the consumer mortgage portfolio segment is calculated by using statistical models based on pools of loans with similar risk characteristics, including credit score, LTV ratio, loan age, documentation type, product type, and loan purpose. Expected losses are statistically derived based on a suite of behavioral based transition models. This transition framework predicts various stages of delinquency, default, and voluntary prepayment over the course of the life of the loan. The transition probability is a function of certain loan and borrower characteristics, including factors, such as loan balance and term, the borrower’s credit score, LTV ratios, and economic variables, as well as consideration of historical factors such as loss frequency and severity. When a default event is predicted, a severity model is applied to estimate future loan losses. Loss severity within the consumer mortgage portfolio segment is impacted by the market values of foreclosed properties, which is affected by numerous factors, including geographic considerations and the condition of the foreclosed property. Macroeconomic data that is used to calculate expected credit losses includes certain interest rates and home price indices. The model output is aggregated to calculate expected lifetime credit losses. Consumer Other The allowance within the personal lending receivables class, prior to the transfer to held-for-sale, was calculated by using a vintage analysis that analyzes historical performance for groups of loans with similar risk characteristics, including vintage level historical balance paydown rates and delinquency and roll rate behaviors by risk tier and product type, to arrive at an estimate of expected lifetime credit losses. The risk tier segmentation is based upon borrower risk characteristics, including credit score and past performance history, as well as certain loan specific characteristics, such as loan type and origination year. The allowance within our credit card receivables class is calculated by using a statistical model that considers loan-specific and economy-wide factors to project default events, positive closure, EAD, and LGD events across all active loans in the portfolio. Macroeconomic data that is used to calculate expected credit losses include state and national-level unemployment rate, revolving consumer credit, and retail sales. Estimated expected lifetime credit losses are the summation of the simulated losses and recoveries for all credit card loans in the portfolio. Commercial Loans The allowance within the commercial loan portfolio segment is calculated using an expected loss framework that uses historical loss experience, concentrations, macroeconomic factors, and performance trends. The determination of the allowance is influenced by numerous assumptions and factors that may materially affect estimates of loss, including changes to the PD, LGD, and EAD. PD factors are determined based on our historical performance data, which considers ongoing reviews of the financial performance of borrowers within our portfolio, including cash flow, debt-service coverage ratio, and an assessment of borrowers’ industry and future prospects. The determination of PD also incorporates historical loss experience and, when necessary, macroeconomic information obtained from external sources. LGD factors consider the type of collateral, relative LTV ratios, and historical loss information. In addition, LGD factors may be influenced by macroeconomic information and situations in which automotive manufacturers repurchase vehicles used as collateral to secure the loans in default situations . EAD factors are derived from outstanding balance levels, including estimated prepayment assumptions based on historical experience.
Variable Interest Entities and Securitizations	Variable Interest Entities and Securitizations A legal entity is considered a VIE if, by design, has any of the following characteristics: the equity at risk is insufficient for the entity to finance its activities without additional subordinated financial support or, as a group, the holders of the equity investment at risk lack the ability to directly or indirectly make decisions about the entity’s activities that most significantly impact economic performance through voting or similar rights, do not have the obligation to absorb the expected losses, do not have the right to receive expected residual returns of the entity, or do not have voting rights that are proportionate to their interests and substantially all the activities are conducted on behalf of an investor with a disproportionately small voting interest. For all VIEs in which we are involved, we assess whether we are the primary beneficiary of the VIE on an ongoing basis. In circumstances where we have both the power to direct the activities that most significantly impact the VIEs’ performance and the obligation to absorb losses or the right to receive the benefits of the VIE that could be significant, we would conclude that we are the primary beneficiary of the VIE and would consolidate the VIE (also referred to as on-balance sheet). In situations where we are not deemed to be the primary beneficiary of the VIE, we do not consolidate the VIE and only recognize our interests in the VIE (also referred to as off-balance sheet). We are involved in securitizations that typically involve the use of VIEs. For information regarding our securitization activities, refer to Note 11. In the case of a consolidated on-balance-sheet VIE used for a securitization, the underlying assets remain on our Consolidated Balance Sheet with the corresponding obligations to third-party beneficial interest holders reflected as debt. We recognize income on the assets and interest expense on the debt issued by the VIE on an accrual basis. We reserve for expected losses on the assets primarily under CECL. Consolidation of the VIE precludes us from recording an accounting sale on the transaction. In securitizations where we are not determined to be the primary beneficiary of the VIE, we must determine whether we achieve a sale for accounting purposes. To achieve a sale for accounting purposes, the financial assets being transferred must be legally isolated, not be constrained by restrictions from further transfer, and be deemed to be beyond our control. We would deem the transaction to be an off-balance-sheet securitization if the preceding three criteria for sale accounting are met. If we were to fail any of these three criteria for sale accounting, the transfer would be accounted for as a secured borrowing, consistent with the preceding paragraph regarding on-balance sheet VIEs. The gain or loss recognized on off-balance-sheet securitizations takes into consideration any assets received or liabilities assumed, including any retained interests, and servicing assets or liabilities (if applicable), which are initially recorded at fair value at the date of sale. Upon the sale of the financial assets, we recognize a gain or loss on sale for the difference between the assets and liabilities recognized, and the assets derecognized. The financial assets obtained from off-balance-sheet securitizations are primarily reported as cash or if applicable, retained interests. Retained interests are classified as securities or as other assets depending on their form and structure. The estimate of the fair value of the retained interests and servicing requires us to exercise significant judgment about the timing and amount of future cash flows from the interests. For a discussion on fair value estimates, refer to Note 24. Gains or losses on off-balance-sheet securitizations are reported in gain on mortgage and automotive loans, net, in our Consolidated Statement of Income. We retain the right to service our consumer and commercial automotive loan securitizations. We may receive servicing fees for off-balance-sheet securitizations based on the securitized asset balances and certain ancillary fees, all of which are reported in other income, net of losses in the Consolidated Statement of Income. Typically, the fee we are paid for servicing represents adequate compensation, and consequently, does not result in the recognition of a servicing asset or liability.
Equity-Method Investments and Proportional Amortization Investments	Equity-Method Investments and Proportional Amortization Investments Our equity-method investments primarily include equity investments related to the CRA, which do not have a readily determinable fair value. The majority of these investments are accounted for using the equity method of accounting and are included in equity-method investments within other assets on our Consolidated Balance Sheet. On January 1, 2024, we adopted ASU 2023-02, as further described within the section below titled Recently Adopted Accounting Standards . Our proportional amortization investments include tax equity investments related to the CRA, for which the primary return to us is the income tax credits and other income tax benefits we receive. We have elected to apply the proportional amortization method to qualifying tax equity investments within our LIHTC, NMTC, and HTC programs. Under the proportional amortization method, the costs of qualifying tax equity investments are amortized in proportion to the allocation of income tax credits and other income tax benefits in each period to the total income tax benefits expected to be obtained over the life of the investment, and the investment amortization and income tax credits are presented on a net basis as a component of income tax expense. Our proportional amortization investments are included within other assets on our Consolidated Balance Sheet. Our obligations related to unfunded commitments for our proportional amortization investments are included in accrued expenses and other liabilities on our Consolidated Balance Sheet. Income tax credits and other income tax benefits received are recorded in income tax expense of the Consolidated Statement of Income and in net income and as a component of operating activities within deferred income taxes, other assets, and other liabilities of the Consolidated Statement of Cash Flows.
Repossessed and Foreclosed Assets	Repossessed and Foreclosed Assets Assets securing our finance receivables and loans are classified as repossessed and foreclosed and included in other assets at the earlier of when physical possession of the collateral is taken or legal title to the underlying collateral is received, which includes the transfer of title through foreclosure or other similar proceedings. Repossessed and foreclosed assets are initially recognized at the lower of the outstanding balance of the loan at the time of repossession or foreclosure or the fair value of the asset less estimated costs to sell. Losses on the initial revaluation of repossessed and foreclosed assets (and generally, declines in value shortly after repossession or foreclosure) are recognized as a charge-off of the allowance for loan losses. Subsequent declines in value are charged to other operating expenses.
Lease Accounting	Lease Accounting At contract inception, we determine whether the contract is or contains a lease based on the terms and conditions of the contract. Refer to Investment in Operating Leases below for leases in which we are the lessor. Lease contracts for which we are the lessee are recognized on our Consolidated Balance Sheet as ROU assets and lease liabilities. Lease liabilities and their corresponding ROU assets are initially recorded based on the present value of the future lease payments over the expected lease term. We utilize our incremental borrowing rate, which is the rate we would incur to borrow on a collateralized basis over a similar term on an amount equal to the lease payments in a similar economic environment since the interest rate implicit in the lease contract is typically not readily determinable. The ROU asset also includes initial direct costs paid less lease incentives received from the lessor. Our lease contracts are generally classified as operating and, as a result, we recognize a single lease cost within other operating expenses on the income statement on a straight-line basis over the lease term. Our leases primarily consist of property-leases and fleet vehicle leases. Our property-lease agreements generally contain a lease component, which includes the right to use the real estate, and non-lease components, which generally include utilities and common area maintenance services. We elected the practical expedient to account for the lease and non-lease components in our property leases as a single lease component for recognition and measurement of our ROU assets and lease liabilities. Our property leases that include variable-rent payments made during the lease term that are not based on a rate or index, are excluded from the measurement of the ROU assets and lease liabilities, and are recognized as a component of variable lease expense as incurred. We have elected not to recognize ROU assets and lease liabilities on property-leases with terms of one year or less. Our fleet vehicle leases also include a lease component, which includes the right to use the vehicle, and non-lease components, which include maintenance, fuel, and administrative services. However, we have elected to account for the lease and non-lease components in our fleet vehicle leases separately. Accordingly, the non-lease components are excluded from the measurement of the ROU asset and lease liability and are recognized as other operating expenses as incurred. Investment in Operating Leases Investment in operating leases, net, represents the vehicles that are underlying our automotive operating lease contracts where we are the lessor and is reported at cost, less accumulated depreciation and net of impairment charges, if any, and origination fees or costs. Depreciation of vehicles is recorded on a straight-line basis over the lease term to an amount that is generally equal to the estimated residual value plus any OEM residual value guarantee. Manufacturer support payments and tax credits that we receive are treated as a reduction to the cost-basis in the underlying operating lease asset, which has the effect of reducing depreciation expense over the life of the contract. Income from operating lease assets including lease origination fees, net of lease origination costs, is recognized as operating lease revenue on a straight-line basis over the scheduled lease term. We have elected to exclude sales taxes collected from the lessee from our consideration in the lease contract and from variable lease payments that are not included in contract consideration. We accrue rental income on our operating leases when collection is reasonably assured. We generally discontinue the accrual of revenue on operating leases at the time an account is determined to be uncollectible, which we determine to be the earliest of (i) the time of repossession, (ii) within 60 days of bankruptcy notification, unless it can be clearly demonstrated that repayment is likely to occur, or (iii) greater than 120 days past due. We have significant investments in the residual values of the assets in our operating lease portfolio. The residual values represent an estimate of the values of the assets at the end of the lease contracts. At contract inception, pricing is determined based on the projected residual value of the leased vehicle. This evaluation is primarily based on a proprietary model, which includes variables such as age, expected mileage, seasonality, segment factors, vehicle type, economic indicators, production cycle, automotive manufacturer incentives, and shifts in used vehicle supply. This internally generated data is compared against third-party, independent data for reasonableness. Realization of the residual values is dependent on our future ability to market the vehicles under the prevailing market conditions and in consideration of any residual value guarantees. Over the life of the lease, we evaluate the adequacy of our estimate of the residual value and may make adjustments to the depreciation rates to the extent the expected value of the vehicle at lease termination changes meaningfully. In addition to estimating the residual value at lease termination, we also evaluate the current value of the operating lease asset and test for impairment to the extent necessary when there is an indication of impairment based on market considerations and portfolio characteristics. Impairment is determined to exist if the fair value of the leased asset is less than carrying value and it is determined that the net carrying value is not recoverable. The net carrying value of a leased asset is not recoverable if it exceeds the sum of the undiscounted expected future cash flows expected to result from the operating lease payments and the estimated residual value plus any residual value guarantees upon eventual disposition. If our operating lease assets are considered to be impaired, the impairment is measured as the amount by which the carrying amount of the assets exceeds the fair value as estimated by discounted cash flows. No impairment was recognized in 2024, 2023, or 2022. When a leased vehicle is returned to us, either at the end of the lease term or through repossession, the asset is reclassified from investment in operating leases, net, to other assets and recorded at the lower-of-cost or estimated fair value, less costs to sell, on our Consolidated Balance Sheet. Any losses recognized at this time are recorded as depreciation expense. Subsequent decline in value and any gain or loss recognized at the time of sale is recognized as a remarketing gain or loss and presented as a component of depreciation expense.
Impairment of Long-lived Assets	Impairment of Long-lived Assets The net carrying values of long-lived assets (including property and equipment) are evaluated for impairment whenever events or changes in circumstances indicate that their net carrying values may exceed undiscounted future net cash flows. Long-lived assets are considered impaired when the carrying amount is deemed unrecoverable and the carrying amount exceeds fair value. Recoverability is measured by comparing the net carrying amount to future net undiscounted cash flows expected to be generated by the assets. If these assets are considered to be impaired, the impairment is measured as the amount by which the net carrying amount of the assets exceeds the fair value using a discounted cash flow method. No material impairment was recognized in 2024, 2023, or 2022. An impairment test on an asset group to be sold or otherwise disposed of, is performed upon occurrence of a triggering event or when certain criteria are met (for example, the asset is planned to be disposed of within 12 months, appropriate levels of authority have approved the sale, there is an active program to locate a buyer, etc.), which cause the disposal group to be classified as held-for-sale. Long-lived assets held-for-sale are recorded at the lower of their carrying amount or estimated fair value less cost to sell. If the net carrying value of the assets held-for-sale exceeds the fair value less cost to sell, we recognize an impairment loss based on the excess of the net carrying amount over the fair value of the assets less cost to sell.
Property and Equipment	Property and Equipment Property and equipment stated at cost, net of accumulated depreciation and amortization, are reported in other assets on our Consolidated Balance Sheet. Included in property and equipment are certain buildings, furniture and fixtures, leasehold improvements, IT hardware and software, capitalized software costs, and assets under construction. We begin depreciating these assets when they are ready for their intended use, except for assets under construction, which begin depreciating when they are ready to be placed into service. Depreciation is recorded on a straight-line basis over the estimated useful lives of the assets, which generally ranges from three three
Goodwill and Other Intangibles	Goodwill and Other Intangibles Goodwill and intangible assets, net of accumulated amortization, are reported in other assets in our Consolidated Balance Sheet. Our intangible assets primarily consist of developed technology and acquired customer relationships, and are amortized using a straight-line methodology over their estimated useful lives. We review intangible assets with a definite useful life for impairment whenever events or changes in circumstances indicate that the carrying amount of the asset may not be recoverable. If it is determined the carrying amount of the asset is not recoverable, an impairment charge is recorded.
Unearned Insurance Premiums and Service Revenue	Unearned Insurance Premiums and Service Revenue
Deferred Insurance Policy and Service Contract Acquisition Costs	Deferred Insurance Policy and Service Contract Acquisition Costs Incremental direct costs incurred to originate a policy or service contract are deferred and recorded in premiums receivable and other insurance assets on our Consolidated Balance Sheet. These costs primarily include commissions paid to dealers to originate these policies or service contracts and vary with the production of business. Deferred policy and service contract acquisition costs are amortized over the terms of the related policies and service contracts on the same basis as premiums and service revenue are earned. We group costs incurred for acquiring like contracts and consider anticipated investment income in determining the recoverability of these costs.
Reserves for Insurance Losses and Loss Adjustment Expenses	Reserves for Insurance Losses and Loss Adjustment Expenses Reserves for insurance losses and loss adjustment expenses are reported in accrued expenses and other liabilities on our Consolidated Balance Sheet. They are established for the unpaid cost of insured events that have occurred as of a point in time. More specifically, the reserves for insurance losses and loss adjustment expenses represent the accumulation of estimates for both reported losses and those incurred, but not reported, including loss adjustment expenses relating to direct insurance and assumed reinsurance agreements. We use a combination of methods commonly used in the insurance industry, including the chain ladder development factor, expected loss, BF, and frequency and severity methods to determine the ultimate losses for an individual business line as well as accident year basis depending on the maturity of the accident period and business-line specifics. These methodologies are based on different assumptions and use various inputs to develop alternative estimates of losses. The chain ladder development factor is used for more mature years while the expected loss, BF, and frequency and severity methods are used for less mature years. Both paid and incurred loss and loss adjustment expenses are reviewed where available and a weighted average of estimates or a single method may be considered in selecting the final estimate for an individual accident period. We did not change our methodology for developing reserves for insurance losses for the year ended December 31, 2024. Estimates for salvage and subrogation recoverable are recognized in accordance with historical patterns and netted against the provision for insurance losses and loss adjustment expenses. Reserves are established for each product-type at the lowest meaningful level of homogeneous data. Since the reserves are based on estimates, the ultimate liability may vary from these estimates. The estimates are regularly reviewed and adjustments, which can potentially be significant, are included in earnings in the period in which they are deemed necessary.
Legal and Regulatory Reserves	Legal and Regulatory Reserves Liabilities for legal and regulatory matters are accrued and established when those matters present loss contingencies that are both probable and estimable, with a corresponding amount recorded to other operating expenses in the Consolidated Statement of Income. In cases where we have an accrual for losses, we include an estimate for probable and estimable legal expenses related to the case. If, at the time of evaluation, the loss contingency related to a legal or regulatory matter is not both probable and estimable, we do not establish a liability for the contingency. We continue to monitor legal and regulatory matters for further developments that could affect the requirement to establish a liability or that may impact the amount of a previously established liability. There may be exposure to loss in excess of any amounts recognized. For certain other matters where the risk of loss is determined to be reasonably possible, estimable, and material to the financial statements, disclosure regarding details of the matter and an estimated range of loss is required. The estimated range of possible loss does not
Earnings per Common Share	Earnings per Common Share We compute basic earnings per common share by dividing net income from continuing operations attributable to common shareholders after deducting dividends on preferred stock by the weighted-average number of common shares outstanding during the period. We compute diluted earnings per common share by dividing net income from continuing operations after deducting dividends on preferred stock by the weighted-average number of common shares outstanding during the period plus the dilution resulting from incremental shares that would have been outstanding if dilutive potential common shares had been issued (assuming it does not have the effect of antidilution), if applicable.
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities We use derivative instruments primarily for risk management purposes. We do not use derivative instruments for speculative purposes. Certain of our derivative instruments are designated as accounting hedges in qualifying relationships, whereas other derivative instruments have not been designated as accounting hedges. In accordance with applicable accounting standards, all derivative instruments, whether designated as accounting hedges or not, are recorded on the balance sheet as assets or liabilities and measured at fair value. We have elected to report the fair value of derivative assets and liabilities on a gross basis—including the fair value for the right to reclaim cash collateral or the obligation to return cash collateral—arising from instruments executed with the same counterparty under a master netting arrangement where we do not have the intent to offset. The right to claim cash collateral is reported in other assets on our Consolidated Balance Sheet. The obligation to return cash collateral is reported in accrued expenses and other liabilities on our Consolidated Balance Sheet. For additional information on derivative instruments and hedging activities, refer to Note 21. At the inception of a qualifying hedge accounting relationship, we designate each qualifying relationship as a hedge of the fair value of a specifically identified asset or liability or portfolio of assets (fair value hedge); as a hedge of the variability of cash flows to be received or paid, or forecasted to be received or paid, related to a recognized asset or liability (cash flow hedge); or as a hedge of the foreign-currency exposure of a net investment in a foreign operation (net investment hedge). We formally document all relationships between hedging instruments and hedged items, as well as the risk management objectives for undertaking such hedge transactions. Both at hedge inception and on an ongoing basis, we formally assess whether the derivatives that are used in hedging relationships are highly effective in offsetting changes in fair values or cash flows of hedged items. Changes in the fair value of derivative instruments qualifying as fair value hedges, along with the gain or loss on the hedged asset or liability attributable to the hedged risk, are recorded in current period earnings. For non-portfolio layer method hedges, the hedge basis (the amount of the change in fair value) is added to (or subtracted from) the carrying amount of the hedged item. For portfolio layer method hedges, the hedge basis does not adjust the carrying value of the hedged item and is instead maintained on a closed portfolio basis. For qualifying cash flow hedges, changes in the fair value of the derivative financial instruments are recorded in accumulated other comprehensive income and recognized in the income statement when the hedged cash flows affect earnings. For a qualifying net investment hedge, the gain or loss is reported in accumulated other comprehensive income as part of the cumulative translation adjustment. Hedge accounting treatment is no longer applied if a derivative financial instrument is terminated, the hedge designation is removed, or the derivative instrument is assessed to no longer be highly effective. For terminated fair value hedges, the hedge basis remains as part of the basis of the hedged asset or liability and is recognized into income over the remaining life of the asset or liability. For terminated portfolio layer method hedges, the hedge basis associated with the discontinued portion of the hedged item is allocated to the remaining individual assets within the closed portfolio that supported the discontinued hedged layer and is recognized into income over the remaining life of those assets. For terminated cash flow hedges, the changes in fair value of the derivative instrument remain in accumulated other comprehensive income and are recognized in the income statement when the hedged cash flows affect earnings. However, if it is probable that the forecasted cash flows will not occur within a specified period, any changes in fair value of the derivative financial instrument remaining in accumulated other comprehensive income are reclassified into earnings immediately. Any previously recognized gain or loss for a net investment hedge continues to remain in accumulated other comprehensive income until earnings are impacted by a sale or liquidation of the associated foreign operation. In all instances, after hedge accounting is no longer applied, any subsequent changes in fair value of the derivative instrument will be recorded into earnings. Changes in the fair value of derivative financial instruments held for risk management purposes that are not designated as accounting hedges under U.S. GAAP (economic hedges) are reported in current period earnings.
Income Taxes	Income Taxes Our income tax expense, deferred tax assets and liabilities, and reserves for unrecognized tax benefits reflect management’s best assessment of estimated current and future taxes to be paid. We are subject to income taxes predominantly in the United States. Significant judgments and estimates are required in determining the consolidated income tax expense. Deferred income taxes arise from temporary differences between the tax and financial statement recognition of revenue and expense. Deferred tax assets are reduced by a valuation allowance, if based on the weight of all available evidence, it is more likely than not, that some or all of the deferred tax assets will not be realized. We use the portfolio approach with respect to reclassification of stranded income tax effects in accumulated other comprehensive income. Our ITCs are generally accounted for using the deferral method and recognized as a reduction of the corresponding asset value. However, ITCs that qualify for proportional amortization treatment are accounted for using the flow-through method and are recognized as a reduction to current income tax expense.
Share-based Compensation	Share-based Compensation
Foreign Exchange	Foreign Exchange Foreign-denominated assets and liabilities resulting from foreign-currency transactions are valued using period-end foreign-exchange rates and the results of operations and cash flows are determined using approximate weighted average exchange rates for the period. Translation adjustments are related to foreign subsidiaries using local currency as their functional currency and are reported as a separate component of accumulated other comprehensive income. Translation gains or losses are reclassified to earnings upon the substantial sale or liquidation of our investments in foreign operations. We may elect to enter into foreign-currency derivatives to mitigate our exposure to changes in foreign-exchange rates. Refer to the Derivative Instruments and Hedging Activities section above for a discussion of our hedging activities of the foreign-currency exposure of a net investment in a foreign operation.
Recently Adopted and Issued Accounting Standards and Disclosure Rules	Recently Adopted Accounting Standards Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions (ASU 2022-03) In June 2022, the FASB issued ASU 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions . The purpose of this guidance is to clarify that a contractual restriction on the ability to sell an equity security is not considered part of the unit of account of the equity security, and therefore should not be considered when measuring the equity security’s fair value. Additionally, an entity cannot separately recognize and measure a contractual-sale restriction. This guidance also adds specific disclosures related to equity securities that are subject to contractual-sale restrictions, including (1) the fair value of equity securities subject to contractual sale restrictions reflected in the balance sheet, (2) the nature and remaining duration of the restrictions, and (3) the circumstances that could cause a lapse in the restrictions. We adopted the amendments on January 1, 2024, using the prospective approach. The impact of these amendments was not material. Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method (ASU 2023-02) In March 2023, the FASB issued ASU 2023-02, Investments — Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method . The purpose of this guidance is to expand the use of the proportional amortization method to certain tax equity investments made primarily for the purpose of receiving income tax credits and other income tax benefits. In order to qualify for the proportional amortization method, the following five conditions must be met: (1) it is probable that the income tax credits allocable to the tax equity investor will be available, (2) the tax equity investor does not have the ability to exercise significant influence over the operating and financial policies of the underlying project, (3) substantially all of the projected benefits are from income tax credits and other income tax benefits, (4) the tax equity investor’s projected yield is based solely on the cash flows from the income tax credits and other income tax benefits is positive, and (5) the tax equity investor is a limited liability investor in the limited liability entity for both legal and tax purposes, and the tax equity investor’s liability is limited to its capital investment. Selecting the proportional amortization method is an accounting policy election that must be applied on a tax-credit-program-by-tax-credit-program basis rather than at the entity level or to individual investments. Additionally, in order to apply the proportional amortization method to qualifying investments, an entity must use the flow-through method when accounting for the receipt of the ITCs. This guidance also adds disclosure requirements related to tax credit programs where the proportional amortization method has been elected. We adopted the amendments on January 1, 2024, using the modified retrospective approach. The adoption of the amendments resulted in a reduction to our opening retained earnings of approximately $2 million, net of income taxes. Improvements to Reportable Segment Disclosures (ASU 2023-07) In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures . The purpose of this guidance is to improve reportable segment disclosure, primarily through enhanced disclosures about significant segment expenses. This ASU requires that an entity disclose, on an interim and annual basis, significant segment expenses that are regularly provided to the CODM and are included within the reported measure of segment profit or loss. This ASU also requires an entity to disclose, on an interim and annual basis, other segment items by reportable segment, including a qualitative description of the composition of those items. This “other” category is defined as the difference between segment profit or loss and segment revenue less significant segment expenses. Entities are also required to disclose the title and position of the individual, or the name of the group or committee, identified as the CODM. We adopted the amendments effective for annual reporting beginning January 1, 2024 and for interim reporting beginning January 1, 2025, using the retrospective approach. The impact of these amendments was not material. Recently Issued Accounting Standards Improvements to Income Tax Disclosures (ASU 2023-09) In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures . The purpose of this guidance is to enhance the rate reconciliation and income taxes paid disclosures. This ASU requires that an entity disclose, on an annual basis, specific categories in the rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. For the state and local income tax category of the rate reconciliation, entities must disclose a qualitative description of the states and local jurisdictions that make up the majority (greater than 50 percent) of the category. For the income taxes paid disclosures, entities will be required to disclose, on an annual basis, the amount of income taxes paid (net of refunds received) disaggregated by federal, state, and foreign taxes. The amendments are effective on January 1, 2025. The amendments must be applied using either a prospective or retrospective approach. Management does not expect the impact of these amendments to be material. Expense Disaggregation Disclosures (ASU 2024-03) In November 2024, the FASB issued ASU 2024-03, Income Statement - Reporting Comprehensive Income (Subtopic 220-40): Expense Disaggregation Disclosures . The purpose of this ASU is to provide additional disclosure that will allow investors to better understand an entity’s performance, better assess an entity’s prospects for future cash flows, and more easily compare an entity’s performance over time and in relation to other similar entities. This ASU requires that an entity disclose, on an interim and annual basis, a disaggregation in the notes to the financial statements of certain income statement line items if the line item includes any of the five required expense categories, which are defined as (1) purchases of inventory, (2) employee compensation, (3) depreciation (including amortization of a finance ROU asset and leasehold improvements), (4) intangible asset amortization, and (5) depletion expense. For the “employee compensation” category, banking entities may continue to present compensation expense on the face of the income statement in accordance with Regulation S-X Rule 210.9-04. The disclosure should include a qualitative description of other expenses included within the income statement line item that are otherwise not disaggregated. This ASU also requires entities to disclose their total selling expenses for each reporting period. Selling expenses are not defined within the ASU, which will require entities to determine and disclose how they define selling expenses on an annual basis. The amendments are effective on January 1, 2027, for annual reporting, and for interim reporting thereafter, with early adoption permitted. The amendments must be applied using either a prospective or retrospective approach. Management does not expect the impact of these amendments to be material. The Enhancement and Standardization of Climate-Related Disclosures for Investors (SEC Release No. 33-11275) In March 2024, the SEC adopted the final rule under SEC Release No. 33-11275, The Enhancement and Standardization of Climate-Related Disclosures for Investors. This final rule requires registrants to disclose certain climate-related information in registration statements and annual reports for the fiscal year beginning January 1, 2025. On April 4, 2024, the SEC ordered that the final rule be stayed pending the completion of judicial review in the U.S. Court of Appeals for the Eighth Circuit. Management is still assessing the final rule and monitoring legal developments to determine its impact on us.
Revenue from Contract with Customer	The following is a description of our primary revenue sources that are derived from contracts with customers. Revenue from contracts with customers is recognized when control of the promised goods or services is transferred to our customers, and in an amount that reflects the consideration that we expect to receive in exchange for those goods or services. For information regarding our revenue recognition policies outside the scope of the revenue recognition principles of ASC Topic 606, Revenue from Contracts with Customers , refer to Note 1. • Noninsurance contracts — We sell VSCs that offer owners mechanical repair protection and roadside assistance for new and used vehicles beyond the manufacturer’s new vehicle limited warranty. We sell GAP contracts that protect the customer against having to pay certain amounts to a lender above the fair market value of their vehicle if the vehicle is damaged and declared a total loss or stolen. We also sell VMCs that provide coverage for certain agreed-upon services, such as oil changes and tire rotations, over the coverage period. We receive payment in full at the inception of each of these contracts. Our performance obligation for these contracts is satisfied over the term of the contract and we recognize revenue over the contract term on a basis proportionate to the anticipated incurrence of costs, as we believe this is the most appropriate method to measure progress towards satisfaction of the performance obligation. This revenue is recorded within insurance premiums and service revenue earned in our Consolidated Statement of Income, while associated cancellation and transfer fees are recorded as other income. • Sale of off-lease vehicles — When a customer’s vehicle lease matures, the customer generally has the option of purchasing or returning the vehicle. If the vehicle is returned to us, we obtain possession with the intent to sell through SmartAuction—our online auction platform, our dealer channel, or through various other physical auctions. Our performance obligation is satisfied and the remarketing gain or loss is recognized when control of the vehicle has passed to the buyer, which coincides with the sale date. Our actual sales proceeds from remarketing the vehicle may be higher or lower than the estimated residual value, after adjusting for any residual value guarantees, resulting in a gain or loss on remarketing recorded through depreciation expense on operating lease assets in our Consolidated Statement of Income. • Remarketing fee income — In addition to using SmartAuction as a remarketing channel for our returned lease vehicles, we maintain the SmartAuction internet auction site and administer the auction process for third-party use. We earn a service fee from dealers for every third-party vehicle sold through SmartAuction. Our performance obligation is to provide the online marketplace for used vehicle transactions to be consummated. This obligation is satisfied and revenue is recognized when control of the vehicle has passed to the buyer, which coincides with the sale date. This revenue is recorded as remarketing fees within other income in our Consolidated Statement of Income. • Brokerage commissions and other revenues through Ally Invest — We charge fees to customers related to their use of certain services on our Ally Invest digital advisory and online brokerage platform. These fees include commissions on low-priced securities, option contracts, certain other security types, account service fees, account management fees on professional portfolio management services, and other ancillary fees. Commissions on customer-directed trades and account service fees are based on published fee schedules and are generated from a customer option to purchase the services offered under the contract. These options do not represent a material right and are only considered a contract when the customer executes their option to purchase these services. Based on this, the term of the contract does not extend beyond the services provided, and accordingly revenue is recognized upon the completion of our performance obligation, which we view as the successful execution of the trade or service. Revenue on professional portfolio management services is calculated monthly based upon a fixed percentage of the client’s assets under management. Due to the fact that this revenue stream is composed of variable consideration that is based on factors outside of our control, we have deemed this revenue as constrained and we are unable to estimate the initial transaction price at the inception of the contract. We have elected to use the practical expedient under U.S. GAAP to recognize revenue monthly based on the amount we are able to invoice the customer. Additionally, we earn revenue when we route customers’ orders to market makers, who then execute customers’ trades. The market makers compensate us for the right to fill the customers’ orders. We also earn revenue from a fee-sharing agreement with our clearing broker related to the interest fee income the clearing broker earns on customer cash balances, securities lending, and margin loans made to our customers. We concluded the initial transaction price is exclusively variable consideration and, based on the nature of our performance obligation to allow the clearing broker to collect interest fee income from cash deposits and customer loans from our customers, we are unable to determine the amount of revenue to be recognized until the total customer cash balance or the total interest income recognized on margin loans has been determined, which occurs monthly. These revenue streams are recorded as other income in our Consolidated Statement of Income. • Brokered/agent commissions through Insurance operations — We have agreements with third parties to offer various vehicle protection products to consumers. We also have agreements with third-party insurers to offer various insurance coverages to dealers. Our performance obligation for these arrangements is satisfied when a customer or dealer has purchased a vehicle protection product or an insurance policy through the third-party provider. In determining the initial transaction price for these agreements, we noted that revenue on brokered/agent commissions is based on the volume of vehicle protection product contracts sold or a percentage of insurance premium written, which is not known to us at the inception of the agreements with these third-party providers. We concluded the initial transaction price is exclusively variable consideration and, based on the nature of the performance obligation, we are unable to determine the amount of revenue we will record until the customer purchases a vehicle protection product or a dealer purchases an insurance policy from the third-party provider. Once we are notified of vehicle protection product sales or insurance policies issued by the third-party providers, we record the commission earned as insurance premiums and service revenues earned in our Consolidated Statement of Income. • Banking fees and interchange income — We charge depositors various account service fees including those for outgoing wires, excessive transactions, stop payments, and returned deposits. These fees are generated from a customer option to purchase services offered under the contract. These options do not represent a material right and are only considered a contract in accordance with the revenue recognition principles when the customer exercises their option to purchase these account services. Based on this, the term for our contracts with customers is considered day-to-day, and the contract does not extend beyond the services already provided. Revenue derived from deposit account fees is recorded at the point in time we perform the requested service, and is recorded as other income in our Consolidated Statement of Income. As a debit and credit card issuer, we also generate interchange fee income from merchants during debit and credit card transactions and incur certain corresponding charges from merchant card networks. For debit card transactions, our performance obligation is satisfied when we have initiated the payment of funds from a customer’s account to a merchant through our contractual agreements with the merchant card networks. For credit card transactions, our performance obligation is satisfied at the time each transaction is captured for settlement with the interchange networks. Interchange fees are reported net of processing fees and customer rewards as other income in our Consolidated Statement of Income. • Other revenue — Other revenue primarily includes service revenue related to various account management functions and fee income derived from third-party lenders arranged through our online automotive lender exchange. These revenue streams are recorded as other income in our Consolidated Statement of Income.
Fair Value Measurements	The following are descriptions of the valuation methodologies used to measure material assets and liabilities at fair value and details of the valuation models, key inputs to those models, and significant assumptions utilized. • Equity securities — We hold various marketable equity securities measured at fair value with changes in fair value recognized in net income. Measurements based on observable market prices are classified as Level 1. • Available-for-sale securities — We carry our available-for-sale securities at fair value based on external pricing sources. We classify our securities as Level 1 when fair value is determined using quoted prices available for the same instruments trading in active markets. We classify our securities as Level 2 when fair value is determined using prices for similar instruments trading in active markets. We perform pricing validation procedures for our available-for-sale securities. • Derivative instruments — We enter into a variety of derivative financial instruments as part of our risk-management strategies. Certain of these derivatives are exchange traded, such as equity options. To determine the fair value of these instruments, we utilize the quoted market prices for those particular derivative contracts; therefore, we classified these contracts as Level 1. We also execute OTC and centrally cleared derivative contracts, such as interest rate swaps, foreign-currency denominated forward contracts, caps, floors, and agency to-be-announced securities. We utilize third-party-developed valuation models that are widely accepted in the market to value these derivative contracts. The specific terms of the contract and market observable inputs (such as interest rate forward curves, interpolated volatility assumptions, or equity pricing) are used in the model. We classified these derivative contracts as Level 2 because all significant inputs into these models were market observable. We also enter into interest rate lock commitments and forward commitments that are executed as part of our mortgage operations, certain of which meet the accounting definition of a derivative and therefore are recorded as derivatives on our Consolidated Balance Sheet. Interest rate lock commitments are valued with unobservable inputs, so they are classified as Level 3. Certain forward commitments are Level 2 and others are Level 3 depending on the valuation model inputs. We purchase automotive finance receivables and loans from third parties as part of forward flow arrangements and, from time-to-time, execute opportunistic ad-hoc bulk purchases. As part of those agreements, we may be required to pay the counterparty at agreed upon measurement dates and determinable amounts if actual credit performance of the acquired loans on the measurement date is better than what was estimated at the time of acquisition. Because these contracts meet the accounting definition of a derivative, we recognize a liability at fair value for these deferred purchase price payments. The fair value of these liabilities is determined using a discounted cash flow method. To estimate cash flows, we utilize various significant assumptions, including market observable inputs (for example, forward interest rates) and internally developed inputs (for example, prepayment speeds, delinquency levels, and expected credit losses). These liabilities are valued using internal loss models with unobservable inputs, and are classified as Level 3. We are required to consider all aspects of nonperformance risk, including our own credit standing, when measuring fair value of derivative assets and liabilities. We reduce credit risk on the majority of our derivatives by entering into legally enforceable agreements that enable the posting and receiving of collateral associated with the fair value of our derivative positions on an ongoing basis. In the event that we do not enter into legally enforceable agreements that enable the posting and receiving of collateral, we will consider our credit risk in the valuation of derivative liabilities through a DVA and the credit risk of our counterparties in the valuation of derivative assets through a CVA, if warranted. When measuring these valuation adjustments, we generally use credit default swap spreads.

Description of Business, Basi_3

Description of Business, Basis of Presentation, and Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accounting Standards Update and Change in Accounting Principle	The following tables summarize the impacts to the Consolidated Financial Statements resulting from the change in the method of accounting for ITCs from the flow-through method to the deferral method. The change did not have an impact to the Consolidated Financial Statements for the year ended December 31, 2022. Year Ended December 31, 2023 ($ in millions, except per share data) As Originally Reported Adjustments As Adjusted Consolidated Statement of Income Net depreciation expense on operating lease assets $ 860 $ (20) $ 840 Income tax expense from continuing operations 61 83 144 Net income 1,020 (63) 957 Net income attributable to common shareholders 910 (63) 847 Basic earnings per common share Net income $ 3.00 $ (0.21) $ 2.79 Diluted earnings per common share Net income $ 2.98 $ (0.21) $ 2.77 Consolidated Statement of Comprehensive Income Comprehensive income (loss) $ 1,263 $ (63) $ 1,200 As of December 31, 2023 ($ in millions) As Originally Reported Adjustments As Adjusted Consolidated Balance Sheet Investment in operating leases, net $ 9,171 $ (86) $ 9,085 Other assets 9,395 23 9,418 Retained earnings $ 154 $ (63) $ 91 Year Ended December 31, 2023 ($ in millions) As Originally Reported Adjustments As Adjusted Consolidated Statement of Cash Flows Operating activities Net income $ 1,020 $ (63) $ 957 Reconciliation of net income to net cash provided by operating activities Depreciation and amortization 1,247 (20) 1,227 Net change in Deferred income taxes (58) (23) (81) Net cash provided by operating activities $ 4,663 $ (106) $ 4,557 Investing Activities Disposals of operating lease assets 3,122 106 3,228 Net cash used in investing activities $ (7,288) $ 106 $ (7,182)

Held-for-sale Operations (Table

Held-for-sale Operations (Tables)	12 Months Ended
	Dec. 31, 2024
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Assets and Liabilities of Operations Held-for-Sale	The assets and liabilities of operations held-for-sale are summarized below. December 31, ($ in millions) 2023 Assets Loans held-for-sale, net $ 1,940 Other assets (a) 35 Total assets $ 1,975 Liabilities Accrued expenses and other liabilities (b) $ 17 Total liabilities $ 17 (a) Primarily includes accrued interest and fees of $25 million, goodwill of $4 million, and property and equipment of $4 million at December 31, 2023. (b) Includes $5 million for reserves for unfunded lending commitments at December 31, 2023.
Schedule of Fair Value Measurements - Nonrecurring Basis	The following table displays assets and liabilities of our held-for-sale operations measured at fair value on a nonrecurring basis and held at December 31, 2023. The disposal group was sold on March 1, 2024. Refer to Note 24 for descriptions of valuation methodologies used to measure material assets at fair value and details of the valuation models, key inputs to these models, and significant assumptions used. Nonrecurring fair value measurements Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments Total gain (loss) included in earnings December 31, 2023 ($ in millions) Level 1 Level 2 Level 3 Total Assets Loans held-for-sale, net $ — $ 1,940 $ — $ 1,940 $ — n/m (a) Other assets (b) — 35 — 35 (149) n/m (a) Total assets $ — $ 1,975 $ — $ 1,975 $ (149) n/m Liabilities Accrued expenses and other liabilities $ — $ 17 $ — $ 17 $ — n/m (a) Total liabilities $ — $ 17 $ — $ 17 $ — n/m n/m = not meaningful (a) We consider the applicable valuation allowance, allowance for loan losses, or cumulative adjustments to be the most relevant indicator of the impact on earnings caused by the fair value measurement. Accordingly, the table above excludes total gains and losses included in earnings for these items. (b) Includes a $149 million impairment of goodwill at Ally Lending. At the time of impairment, the fair value of goodwill at Ally Lending was classified as Level 2 under the fair value hierarchy. The following tables display assets and liabilities measured at fair value on a nonrecurring basis and still held at December 31, 2024, and December 31, 2023, respectively. The amounts are generally as of the end of each period presented, which approximate the fair value measurements that occurred during each period. These tables exclude assets of operations held-for-sale, refer to Note 2 for additional information. Nonrecurring fair value measurements Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments Total gain (loss) included in earnings December 31, 2024 ($ in millions) Level 1 Level 2 Level 3 Total Assets Loans held-for-sale, net $ — $ — $ 143 $ 143 $ — n/m (a) Commercial finance receivables and loans, net (b) Automotive — — 13 13 (2) n/m (a) Other — — 26 26 (63) n/m (a) Total commercial finance receivables and loans, net — — 39 39 (65) n/m (a) Other assets Goodwill (c) — — 362 362 (118) n/m (a) Repossessed and foreclosed assets (d) — — 8 8 (1) n/m (a) Total assets $ — $ — $ 552 $ 552 $ (184) n/m n/m = not meaningful (a) We consider the applicable valuation allowance, allowance for loan losses, or cumulative adjustments to be the most relevant indicator of the impact on earnings caused by the fair value measurement. Accordingly, the table above excludes total gains and losses included in earnings for these items. The carrying values are inclusive of the respective valuation reserve, loan loss allowance, or cumulative adjustment. (b) Represents collateral-dependent loans held for investment for which a nonrecurring measurement was made. The related allowance for loan losses represents the cumulative fair value adjustments for those specific receivables. (c) As of December 31, 2024, we recognized a $118 million impairment of goodwill at Ally Credit Card. Refer to Note 13 for further discussion. (d) The allowance provided for repossessed and foreclosed assets represents any cumulative valuation adjustment recognized to adjust the assets to fair value. Nonrecurring fair value measurements Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments Total gain (loss) included in earnings December 31, 2023 ($ in millions) Level 1 Level 2 Level 3 Total Assets Loans held-for-sale, net $ — $ — $ 375 $ 375 $ — n/m (a) Commercial finance receivables and loans, net (b) Automotive — — 6 6 — n/m (a) Other — — 49 49 (43) n/m (a) Total commercial finance receivables and loans, net — — 55 55 (43) n/m (a) Other assets Nonmarketable equity investments — — 1 1 1 n/m (a) Repossessed and foreclosed assets (c) — — 10 10 (1) n/m (a) Total assets $ — $ — $ 441 $ 441 $ (43) n/m n/m = not meaningful (a) We consider the applicable valuation allowance, allowance for loan losses, or cumulative adjustments to be the most relevant indicator of the impact on earnings caused by the fair value measurement. Accordingly, the table above excludes total gains and losses included in earnings for these items. The carrying values are inclusive of the respective valuation reserve, loan loss allowance, or cumulative adjustment. (b) Represents collateral-dependent loans held for investment for which a nonrecurring measurement was made. The related allowance for loan losses represents the cumulative fair value adjustments for those specific receivables. (c) The allowance provided for repossessed and foreclosed assets represents any cumulative valuation adjustment recognized to adjust the assets to fair value.

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	12 Months Ended
	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	The following table presents a disaggregated view of our revenue from contracts with customers included in other revenue that falls within the scope of the revenue recognition principles of ASC Topic 606, Revenue from Contracts with Customers . Year ended December 31, ($ in millions) Automotive Finance operations Insurance operations Corporate Finance operations Corporate and Other Consolidated 2024 Revenue from contracts with customers Noninsurance contracts (a) (b) (c) $ — $ 909 $ — $ — $ 909 Remarketing fee income 112 — — — 112 Brokerage commissions and other revenue — — — 88 88 Banking fees and interchange income (d) — — — 47 47 Brokered/agent commissions — 20 — — 20 Other 19 3 — — 22 Total revenue from contracts with customers 131 932 — 135 1,198 All other revenue 232 575 123 39 969 Total other revenue (e) $ 363 $ 1,507 $ 123 $ 174 $ 2,167 2023 Revenue from contracts with customers Noninsurance contracts (a) (b) (c) $ — $ 686 $ — $ — $ 686 Remarketing fee income 117 — — — 117 Brokerage commissions and other revenue — — — 89 89 Banking fees and interchange income (d) — — — 44 44 Brokered/agent commissions — 13 — — 13 Other 18 1 — — 19 Total revenue from contracts with customers 135 700 — 133 968 All other revenue 186 728 104 27 1,045 Total other revenue (e) $ 321 $ 1,428 $ 104 $ 160 $ 2,013 2022 Revenue from contracts with customers Noninsurance contracts (a) (b) (c) $ — $ 655 $ — $ — $ 655 Remarketing fee income 107 — — — 107 Brokerage commissions and other revenue — — — 64 64 Banking fees and interchange income (d) — — — 44 44 Brokered/agent commissions — 14 — — 14 Other 20 — — 4 24 Total revenue from contracts with customers 127 669 — 112 908 All other revenue 179 354 122 15 670 Total other revenue (e) $ 306 $ 1,023 $ 122 $ 127 $ 1,578 (a) We had opening balances of $3.0 billion at both January 1, 2024 and 2023, and $3.1 billion at January 1, 2022 in unearned revenue associated with outstanding contracts and $973 million, $973 million and $939 million of these balances were recognized as insurance premiums and service revenue earned in our Consolidated Statement of Income during the years ended December 31, 2024, 2023, and 2022, respectively. (b) At December 31, 2024, we had unearned revenue of $3.0 billion associated with outstanding contracts, and with respect to this balance we expect to recognize revenue of $849 million in 2025, $706 million in 2026, $555 million in 2027, $394 million in 2028, and $452 million thereafter. We had unearned revenue of $3.0 billion associated with outstanding contracts at both December 31, 2023, and 2022. (c) We had deferred insurance assets of $1.8 billion at December 31, 2024, 2023, and 2022. We recognized $577 million, $580 million, and $564 million of expense during the years ended December 31, 2024, 2023, and 2022, respectively. (d) Interchange income is reported net of customer rewards. Customer rewards expense was $28 million, $20 million, and $14 million for the years ended December 31, 2024, 2023, and 2022, respectively. (e) Represents a component of total net revenue. Refer to Note 26 for further information on our reportable operating segments.

Insurance Premiums and Servic_2

Insurance Premiums and Service Revenue (Tables)	12 Months Ended
	Dec. 31, 2024
Insurance Premiums and Service Revenue [Abstract]
Schedule of Insurance Premiums and Service Revenue	The following table is a summary of insurance premiums and service revenue written and earned. 2024 2023 2022 Year ended December 31, ($ in millions) Written Earned Written Earned Written Earned Insurance premiums Direct $ 622 $ 564 $ 476 $ 446 $ 388 $ 379 Assumed 122 113 93 68 42 29 Gross insurance premiums 744 677 569 514 430 408 Ceded (275) (258) (265) (238) (216) (211) Net insurance premiums 469 419 304 276 214 197 Service revenue 1,003 994 971 995 889 954 Insurance premiums and service revenue written and earned $ 1,472 $ 1,413 $ 1,275 $ 1,271 $ 1,103 $ 1,151

Other Income, Net of Losses (Ta

Other Income, Net of Losses (Tables)	12 Months Ended
	Dec. 31, 2024
Other Nonoperating Income (Expense) [Abstract]
Schedule of Other Income, by Component	Details of other income, net of losses, were as follows. Year ended December 31, ($ in millions) 2024 2023 2022 Late charges and other administrative fees $ 197 $ 198 $ 162 Remarketing fees 112 117 107 Income from equity-method investments (a) 20 4 102 Loss on nonmarketable equity investments, net (a) (6) (10) (132) Other, net 335 273 256 Total other income, net of losses $ 658 $ 582 $ 495 (a) Refer to Note 13 for further information on our equity-method investments and nonmarketable equity investments.

Reserves for Insurance Losses_2

Reserves for Insurance Losses and Loss Adjustment Expenses (Tables)	12 Months Ended
	Dec. 31, 2024
Short-Duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Schedule of Liability for Unpaid Claims and Claims Adjustment Expense	The following table shows incurred claims and allocated loss adjustment expenses, net of reinsurance. For the years ended December 31, ($ in millions) December 31, 2024 ($ in millions) (unaudited supplementary information) Total of incurred-but-not-reported liabilities plus expected development on reported claims (a) Cumulative number of reported claims (a) Accident year 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2015 $ 274 $ 271 $ 272 $ 272 $ 272 $ 272 $ 272 $ 272 $ 272 $ 272 $ — 342,280 2016 326 327 328 328 328 328 328 328 328 — 476,057 2017 310 314 315 315 315 315 315 315 — 481,750 2018 271 272 272 273 273 272 273 — 506,454 2019 303 306 305 305 305 305 — 542,361 2020 343 339 339 339 340 — 494,524 2021 243 237 237 237 — 493,714 2022 258 267 269 — 513,434 2023 385 403 7 602,714 2024 488 78 621,826 Total $ 3,230 (a) Claims are reported on a claimant basis in a given accident year. Claimant is defined as one vehicle for GAP products, one repair for VSCs and VMCs, one dealership for dealer inventory products, and per individual/coverage for most other products. The following table shows cumulative paid claims and allocated loss adjustment expenses, net of reinsurance. For the years ended December 31, ($ in millions) (unaudited supplementary information) Accident year 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2015 $ 252 $ 272 $ 272 $ 272 $ 272 $ 272 $ 272 $ 272 $ 272 $ 272 2016 302 327 328 328 328 328 328 328 328 2017 289 315 315 315 315 315 315 315 2018 245 273 273 273 273 272 273 2019 278 306 305 305 305 305 2020 313 339 339 340 340 2021 213 236 237 237 2022 225 260 265 2023 328 387 2024 390 Total 3,112 All outstanding liabilities for loss and allocated loss adjustment expenses before 2015, net of reinsurance 8 Reserves for insurance losses and allocated loss adjustment expenses, net of reinsurance $ 126 The following table shows a rollforward of our reserves for insurance losses and loss adjustment expenses. ($ in millions) 2024 2023 2022 Total gross reserves for insurance losses and loss adjustment expenses at January 1, $ 140 $ 119 $ 122 Less: Reinsurance recoverable 66 72 81 Net reserves for insurance losses and loss adjustment expenses at January 1, 74 47 41 Net insurance losses and loss adjustment expenses incurred related to: Current year 521 414 282 Prior years (a) 23 8 (2) Total net insurance losses and loss adjustment expenses incurred 544 422 280 Net insurance losses and loss adjustment expenses paid or payable related to: Current year (420) (354) (246) Prior years (69) (41) (28) Total net insurance losses and loss adjustment expenses paid or payable (489) (395) (274) Net reserves for insurance losses and loss adjustment expenses at December 31, 129 74 47 Plus: Reinsurance recoverable (b) 60 66 72 Total gross reserves for insurance losses and loss adjustment expenses at December 31, (c) $ 189 $ 140 $ 119 (a) There have been no material adverse changes to the reserve for prior years. (b) Included in premiums receivable and other insurance assets on our Consolidated Balance Sheet. (c) Included in accrued expenses and other liabilities on our Consolidated Balance Sheet.
Schedule of Historical Claims Duration	The following table shows the average annual percentage payout of incurred claims by age, net of reinsurance. The information presented is unaudited supplementary information. Year 1 2 3 4 5 6 7 8 9 10 Percentage payout of incurred claims 89.7 % 9.9 % 0.3 % — % — % — % 0.1 % — % — % — %
Schedule of Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability	The following table shows a reconciliation of the disclosures of incurred and paid claims development to the reserves for insurance losses and loss adjustment expenses. December 31, ($ in millions) 2024 2023 2022 Reserves for insurance losses and loss adjustment expenses, net of reinsurance $ 126 $ 71 $ 44 Total reinsurance recoverable on unpaid claims 60 66 72 Unallocated loss adjustment expenses 3 3 3 Total gross reserves for insurance losses and loss adjustment expenses $ 189 $ 140 $ 119

Other Operating Expenses (Table

Other Operating Expenses (Tables)	12 Months Ended
	Dec. 31, 2024
Operating Expenses [Abstract]
Schedule of Other Operating Cost and Expense, by Component	Details of other operating expenses were as follows. Year ended December 31, ($ in millions) 2024 2023 2022 Insurance commissions $ 647 $ 636 $ 610 Technology and communications 438 436 406 Advertising and marketing 285 308 366 Property and equipment depreciation 224 196 165 Lease and loan administration 181 210 201 Regulatory and licensing fees 180 205 119 Professional services 147 145 173 Vehicle remarketing and repossession 129 116 91 Amortization of intangible assets (a) 19 25 31 Other 425 414 345 Total other operating expenses $ 2,675 $ 2,691 $ 2,507 (a) Refer to Note 1 and Note 13 for further information on our intangible assets.

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Schedule of Investment Portfolio	The cost, fair value, and gross unrealized gains and losses on available-for-sale and held-to-maturity securities were as follows. 2024 2023 Amortized cost Gross unrealized Fair value Amortized cost Gross unrealized Fair value December 31, ($ in millions) gains losses gains losses Available-for-sale securities Debt securities U.S. Treasury and federal agencies $ 2,073 $ — $ (200) $ 1,873 $ 2,284 $ — $ (209) $ 2,075 U.S. States and political subdivisions 704 — (87) 617 727 1 (70) 658 Foreign government 198 1 (5) 194 190 1 (8) 183 Agency mortgage-backed residential (a) 16,765 — (3,112) 13,653 18,122 1 (2,739) 15,384 Mortgage-backed residential 249 — (43) 206 268 — (43) 225 Agency mortgage-backed commercial (a) 4,819 1 (836) 3,984 4,539 2 (783) 3,758 Asset-backed 131 — (2) 129 344 — (12) 332 Corporate debt 1,871 3 (120) 1,754 1,942 4 (146) 1,800 Total available-for-sale securities (b) (c) (d) (e) (f) $ 26,810 $ 5 $ (4,405) $ 22,410 $ 28,416 $ 9 $ (4,010) $ 24,415 Held-to-maturity securities Debt securities Agency mortgage-backed residential $ 935 $ — $ (196) $ 739 $ 999 $ — $ (173) $ 826 Mortgage-backed residential 3,323 142 — 3,465 3,603 221 — 3,824 Asset-backed retained notes 88 1 — 89 78 1 — 79 Total held-to-maturity securities (d) (f) (g) $ 4,346 $ 143 $ (196) $ 4,293 $ 4,680 $ 222 $ (173) $ 4,729 (a) Fair value includes basis adjustments for securities in closed portfolios with active hedges under the portfolio layer method. This includes a $72 million liability and a $46 million asset for agency mortgage-backed residential securities at December 31, 2024, and December 31, 2023, respectively, and a $34 million liability and a $29 million asset for agency mortgage-backed commercial securities at December 31, 2024, and December 31, 2023, respectively. These basis adjustments would be allocated to the amortized cost of specific securities within the pool if the hedge was dedesignated. Refer to Note 21 for additional information. (b) Certain available-for-sale securities are included in fair value hedging relationships. Refer to Note 21 for additional information. (c) Certain entities related to our Insurance operations are required to deposit securities with state regulatory authorities. These deposited securities totaled $13 million and $12 million at December 31, 2024, and December 31, 2023, respectively. (d) Investment securities with a fair value of $3.4 billion and $4.7 billion were pledged as collateral at December 31, 2024, and December 31, 2023, respectively. This primarily included $2.9 billion and $3.3 billion pledged to secure advances from the FHLB at December 31, 2024, and December 31, 2023, respectively. This also included securities pledged for other purposes as required by contractual obligations or law, under which agreements we granted the counterparty the right to sell or pledge $439 million and $1.4 billion of the underlying available-for-sale securities at December 31, 2024, and December 31, 2023, respectively. (e) Totals do not include accrued interest receivable, which was $73 million and $76 million at December 31, 2024, and December 31, 2023, respectively. Accrued interest receivable is included in other assets (f) There was no allowance for credit losses recorded at both December 31, 2024, or December 31, 2023, as management determined that there were no expected credit losses in our portfolio of available-for-sale and held-to-maturity securities. (g) Totals do not include accrued interest receivable, which was $12 million and $13 million at December 31, 2024, and December 31, 2023, respectively. Accrued interest receivable is included in other assets on our Consolidated Balance Sheet.
Schedule of Investments Classified by Contractual Maturity Date	The maturity distribution of debt securities outstanding is summarized in the following tables based upon contractual maturities. Call or prepayment options may cause actual maturities to differ from contractual maturities. Total Due in one year or less Due after one year through five years Due after five years through ten years Due after ten years ($ in millions) Amount Yield Amount Yield Amount Yield Amount Yield Amount Yield December 31, 2024 Fair value of available-for-sale securities (a) U.S. Treasury and federal agencies $ 1,873 1.6 % $ 54 1.0 % $ 1,087 1.5 % $ 732 1.9 % $ — — % U.S. States and political subdivisions 617 3.4 33 6.2 72 3.1 86 4.1 426 3.2 Foreign government 194 2.7 33 2.1 51 2.5 110 2.9 — — Agency mortgage-backed residential (b) 13,653 2.6 — — 7 2.0 23 2.5 13,623 2.6 Mortgage-backed residential 206 2.7 — — — — — — 206 2.7 Agency mortgage-backed commercial (b) 3,984 2.5 23 3.1 339 3.7 1,724 2.5 1,898 2.1 Asset-backed 129 1.5 — — 128 1.5 1 4.0 — — Corporate debt 1,754 3.1 184 3.0 754 2.6 695 3.3 121 5.3 Total available-for-sale securities $ 22,410 2.5 $ 327 2.3 $ 2,438 2.2 $ 3,371 2.6 $ 16,274 2.6 Amortized cost of available-for-sale securities $ 26,810 $ 330 $ 2,579 $ 3,844 $ 20,057 Amortized cost of held-to-maturity securities (c) Agency mortgage-backed residential $ 935 2.7 % $ — — % $ — — % $ — — % $ 935 2.7 % Mortgage-backed residential 3,323 2.8 — — — — 9 3.1 3,314 2.8 Asset-backed retained notes 88 5.4 — — 64 5.3 24 5.6 — — Total held-to-maturity securities $ 4,346 2.9 $ — — $ 64 5.3 $ 33 5.0 $ 4,249 2.8 December 31, 2023 Fair value of available-for-sale securities (a) U.S. Treasury and federal agencies $ 2,075 1.6 % $ 215 0.9 % $ 1,120 1.5 % $ 740 1.9 % $ — — % U.S. States and political subdivisions 658 3.2 4 3.4 55 2.7 110 3.6 489 3.1 Foreign government 183 2.3 20 1.3 82 2.4 81 2.5 — — Agency mortgage-backed residential (b) 15,384 2.6 — — 10 1.9 32 2.5 15,342 2.6 Mortgage-backed residential 225 2.7 — — — — — — 225 2.7 Agency mortgage-backed commercial (b) 3,758 2.3 — — 163 3.8 1,641 2.4 1,954 2.1 Asset-backed 332 1.7 — — 327 1.7 4 3.9 1 2.7 Corporate debt 1,800 2.7 210 2.4 915 2.6 671 2.9 4 6.2 Total available-for-sale securities $ 24,415 2.5 $ 449 1.7 $ 2,672 2.1 $ 3,279 2.4 $ 18,015 2.5 Amortized cost of available-for-sale securities $ 28,416 $ 461 $ 2,844 $ 3,746 $ 21,365 Amortized cost of held-to-maturity securities (c) Agency mortgage-backed residential $ 999 2.8 % $ — — % $ — — % $ — — % $ 999 2.8 % Mortgage-backed residential 3,603 2.8 — — — — 12 3.0 3,591 2.8 Asset-backed retained notes 78 5.6 1 5.6 41 5.6 2 6.0 34 5.6 Total held-to-maturity securities $ 4,680 2.8 $ 1 5.6 $ 41 5.6 $ 14 3.4 $ 4,624 2.8 (a) Yield is calculated using the effective yield of each security at the end of the period, weighted based on the market value by security for the securities within each maturity distribution range. The effective yield considers the contractual coupon and amortized cost inclusive of hedge basis adjustments for dedesignated hedges, and excludes expected capital gains and losses. Yield does not consider hedging effects for securities in active hedges. (b) Fair value includes basis adjustments for securities in closed portfolios with active hedges under the portfolio layer method. This includes a $72 million liability and a $46 million asset for agency mortgage-backed residential securities at December 31, 2024, and December 31, 2023, respectively, and a $34 million liability and a $29 million asset for agency mortgage-backed commercial securities at December 31, 2024, and December 31, 2023, respectively. These basis adjustments would be allocated to the amortized cost of specific securities within the pool if the hedge was dedesignated. Refer to Note 21 for additional information. (c) Yield is calculated using the effective yield of each security at the end of the period, weighted based on amortized cost by security for the securities within each maturity distribution range. The effective yield considers the contractual coupon and amortized cost and excludes capital gains, capital losses, and the premium or discount on securities transferred from available-for-sale to held-to-maturity.
Schedule of Investment Income	The following table presents interest and dividends on investment securities. Year ended December 31, ($ in millions) 2024 2023 2022 Taxable interest $ 952 $ 938 $ 765 Taxable dividends 22 20 17 Interest and dividends exempt from U.S. federal income tax 22 22 22 Interest and dividends on investment securities $ 996 $ 980 $ 804
Schedule of Realized Gain (Loss)	The following table presents gross gains and losses realized upon the sales of available-for-sale securities, and net gains or losses on equity securities held during the period. Year ended December 31, ($ in millions) 2024 2023 2022 Available-for-sale securities Gross realized gains $ 3 $ 5 $ 23 Net realized gain on available-for-sale securities 3 5 23 Net realized gain on equity securities 75 32 72 Net unrealized (loss) gain on equity securities (6) 107 (215) Other gain (loss) on investments, net $ 72 $ 144 $ (120)
Schedule of Held to Maturity Debt Securities by Credit Quality	The following table presents the credit quality of our held-to-maturity securities, based on the latest available information as of December 31, 2024, and December 31, 2023. The credit ratings are sourced from nationally recognized statistical rating organizations, which include S&P, Moody’s, Fitch, and DBRS. The ratings presented are a composite of the ratings sourced from the agencies or, if the ratings cannot be sourced from the agencies, are based on the asset type of the particular security. All our held-to-maturity securities were current in their payment of principal and interest as of both December 31, 2024, and December 31, 2023. We have not recorded any interest income reversals on our held-to-maturity securities during the years ended December 31, 2024, or 2023 . December 31, ($ in millions) AAA AA A BBB Total (a) 2024 Debt securities Agency mortgage-backed residential $ — $ 935 $ — $ — $ 935 Mortgage-backed residential 3,241 78 4 — 3,323 Asset-backed retained notes 81 3 2 2 88 Total held-to-maturity securities $ 3,322 $ 1,016 $ 6 $ 2 $ 4,346 2023 Debt securities Agency mortgage-backed residential $ — $ 999 $ — $ — $ 999 Mortgage-backed residential 3,497 93 13 — 3,603 Asset-backed retained notes 73 2 2 1 78 Total held-to-maturity securities $ 3,570 $ 1,094 $ 15 $ 1 $ 4,680 (a) Rating agencies indicate that they base their ratings on many quantitative and qualitative factors, which may include capital adequacy, liquidity, asset quality, business mix, level and quality of earnings, and the current operating, legislative, and regulatory environment. A credit rating is not a recommendation to buy, sell, or hold securities, and the ratings are subject to revision or withdrawal at any time by the assigning rating agency.
Schedule of Available-for-Sale Securities in Unrealized Loss Position	The following table summarizes available-for-sale securities in an unrealized loss position, which we evaluated to determine if a credit loss exists requiring the recognition of an allowance for credit losses. For additional information on our methodology, refer to Note 1. As of December 31, 2024, and December 31, 2023, we did not have the intent to sell the available-for-sale securities in an unrealized loss position and we do not believe it is more likely than not that we will be required to sell these securities before recovery of their amortized cost basis. We have not recorded any interest income reversals on our available-for-sale securities during the years ended December 31, 2024, or 2023. 2024 2023 Less than 12 months 12 months or longer Less than 12 months 12 months or longer December 31, ($ in millions) Fair value Unrealized loss Fair value Unrealized loss Fair value Unrealized loss Fair value Unrealized loss Available-for-sale securities Debt securities U.S. Treasury and federal agencies $ — $ — $ 1,873 $ (200) $ — $ — $ 2,075 $ (209) U.S. States and political subdivisions 87 (2) 472 (85) 70 — 501 (70) Foreign government 40 — 112 (5) 16 — 134 (8) Agency mortgage-backed residential (a) 127 (3) 13,518 (3,109) 300 (5) 15,015 (2,734) Mortgage-backed residential — — 206 (43) — — 225 (43) Agency mortgage-backed commercial (a) 428 (11) 3,445 (825) 153 (4) 3,472 (779) Asset-backed — — 124 (2) 18 — 302 (12) Corporate debt 265 (6) 1,319 (114) 33 (1) 1,607 (145) Total available-for-sale securities $ 947 $ (22) $ 21,069 $ (4,383) $ 590 $ (10) $ 23,331 $ (4,000) (a) Includes basis adjustments for certain securities that are included in closed portfolios with active hedges under the portfolio layer method at December 31, 2024, and December 31, 2023. The basis adjustments would be allocated to the amortized cost of specific securities within the pool if the hedge was dedesignated. Refer to Note 21 for additional information.

Finance Receivables and Loans_2

Finance Receivables and Loans, Net (Tables)	12 Months Ended
	Dec. 31, 2024
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	The composition of finance receivables and loans reported at amortized cost basis was as follows. December 31, ($ in millions) 2024 2023 Consumer automotive (a) $ 83,757 $ 84,320 Consumer mortgage (b) 17,234 18,667 Consumer other Credit Card 2,294 1,990 Total consumer other 2,294 1,990 Total consumer 103,285 104,977 Commercial Commercial and industrial Automotive 18,259 18,700 Other 8,212 9,712 Commercial real estate 6,274 6,050 Total commercial 32,745 34,462 Total finance receivables and loans (c) (d) $ 136,030 $ 139,439 (a) Certain finance receivables and loans are included in fair value hedging relationships. Refer to Note 21 for additional information. (b) Includes loans originated as interest-only mortgage loans of $12 million and $15 million at December 31, 2024, and December 31, 2023, respectively, of which all have exited the interest-only period. (c) Totals include net unearned income, unamortized premiums and discounts, and deferred fees and costs of $2.3 billion at both December 31, 2024, and December 31, 2023. (d) Totals do not include accrued interest receivable, which was $839 million and $853 million at December 31, 2024, and December 31, 2023, respectively. Accrued interest receivable is included in other assets on our Consolidated Balance Sheet. Billed interest on our credit card loans is included within finance receivables and loans, net.
Schedule of Allowance for Credit Losses on Financing Receivables	The following tables present an analysis of the activity in the allowance for loan losses on finance receivables and loans for the years ended December 31, 2024, and 2023, respectively. ($ in millions) Consumer automotive Consumer mortgage Consumer other Commercial Total Allowance at January 1, 2024 $ 3,083 $ 21 $ 293 $ 190 $ 3,587 Charge-offs (a) (2,681) (2) (262) (3) (2,948) Recoveries 871 5 30 8 914 Net charge-offs (1,810) 3 (232) 5 (2,034) Write-downs from transfers to held-for-sale (b) (5) — — — (5) Provision for credit losses 1,902 (7) 259 12 2,166 Other — 2 (1) (1) — Allowance at December 31, 2024 $ 3,170 $ 19 $ 319 $ 206 $ 3,714 (a) Refer to Note 1 for information regarding our charge-off policies. (b) Consumer automotive includes a $5 million reduction of allowance from the completion of a retail securitization transaction during the year ended December 31, 2024, resulting in the deconsolidation of the assets and liabilities from our Consolidated Balance Sheet. ($ in millions) Consumer automotive Consumer mortgage Consumer other (a) Commercial Total Allowance at January 1, 2023 $ 3,020 $ 27 $ 426 $ 238 $ 3,711 Charge-offs (b) (2,284) (3) (303) (130) (2,720) Recoveries 793 9 25 6 833 Net charge-offs (1,491) 6 (278) (124) (1,887) Write-downs from transfers to held-for-sale (c) (d) (41) — (174) — (215) Provision for credit losses (e) 1,595 (11) 319 76 1,979 Other — (1) — — (1) Allowance at December 31, 2023 $ 3,083 $ 21 $ 293 $ 190 $ 3,587 (a) Excludes $3 million of finance receivables and loans at January 1, 2023, for which we have elected the fair value option and incorporate no allowance for loan losses. (b) Refer to Note 1 for information regarding our charge-off policies. (c) Consumer automotive includes a $41 million reduction of allowance from the sales of retained interests related to securitizations during 2023, resulting in the deconsolidation of the assets and liabilities from our Consolidated Balance Sheet. (d) Consumer other includes a $174 million reduction of allowance from transfers to held-for-sale related to Personal Lending. Refer to Note 2 for further information. (e) Excludes $11 million of benefit for credit losses related to our reserve for unfunded commitments. The remaining liability related to the reserve for unfunded commitments is included in accrued expenses and other liabilities on our Consolidated Balance Sheet, excluding $5 million related to Personal Lending, which was transferred to liabilities of operations held-for-sale as of December 31, 2023. Refer to Note 2 for further information.
Schedule of Sales of Financing Receivables and Loans	The following table presents sales of finance receivables and loans and transfers of finance receivables and loans from held-for-investment to held-for-sale based on net carrying value. Year ended December 31, ($ in millions) 2024 2023 Consumer automotive $ 1,108 $ 1,667 Consumer mortgage 325 — Consumer other (a) — 1,940 Commercial 298 132 Total sales and transfers $ 1,731 $ 3,739 (a) Consists of personal lending finance receivables and loans. These were transferred to loans held-for-sale, and were included in assets of operations held-for-sale on our Consolidated Balance Sheet at December 31, 2023. We closed the sale of Ally Lending on March 1, 2024. Refer to Note 2 for additional information.
Schedule of Purchases of Financing Receivables and Loans	The following table presents purchases of finance receivables and loans based on unpaid principal balance at the time of purchase. Year ended December 31, ($ in millions) 2024 2023 Consumer automotive $ 3,243 $ 3,861 Consumer mortgage 21 21 Commercial — 10 Total purchases of finance receivables and loans $ 3,264 $ 3,892
Schedule of Financing Receivables, Nonaccrual Status	The following tables present the amortized cost of our finance receivables and loans on nonaccrual status. All consumer or commercial finance receivables and loans that were 90 days or more past due were on nonaccrual status as of December 31, 2024, and December 31, 2023. Refer to Note 1 for additional information on our accounting policy for finance receivables and loans on nonaccrual status. December 31, 2024 ($ in millions) Nonaccrual status at Jan. 1, 2024 Nonaccrual status Nonaccrual with no allowance (a) Consumer automotive $ 1,129 $ 1,231 $ 476 Consumer mortgage 54 54 36 Consumer other Credit Card 92 90 — Total consumer other 92 90 — Total consumer 1,275 1,375 512 Commercial Commercial and industrial Automotive 18 15 — Other 98 94 4 Commercial real estate 3 2 2 Total commercial 119 111 6 Total finance receivables and loans (b) $ 1,394 $ 1,486 $ 518 (a) Represents a component of nonaccrual status at end of period. (b) We recorded interest income from cash payments associated with finance receivables and loans on nonaccrual status of $17 million for the year ended December 31, 2024. December 31, 2023 ($ in millions) Nonaccrual status at Jan. 1, 2023 Nonaccrual status Nonaccrual with no allowance (a) Consumer automotive $ 1,187 $ 1,129 $ 531 Consumer mortgage 49 54 33 Consumer other Personal Lending (b) 13 — — Credit Card 43 92 — Total consumer other 56 92 — Total consumer 1,292 1,275 564 Commercial Commercial and industrial Automotive 5 18 13 Other 157 98 5 Commercial real estate — 3 3 Total commercial 162 119 21 Total finance receivables and loans (c) $ 1,454 $ 1,394 $ 585 (a) Represents a component of nonaccrual status at end of period. (b) Personal Lending finance receivables and loans were transferred to loans held-for-sale, and were included in assets of operations held-for-sale on our Consolidated Balance Sheet at December 31, 2023. We closed the sale of Ally Lending on March 1, 2024. Refer to Note 2 for additional information. (c) We recorded interest income from cash payments associated with finance receivables and loans on nonaccrual status of $16 million for the year ended December 31, 2023.
Schedule of Financing Receivable Credit Quality Indicators	The following tables present the amortized cost basis of our consumer finance receivables and loans by credit quality indicator based on delinquency status and origination year. Origination year Revolving loans converted to term December 31, 2024 ($ in millions) 2024 2023 2022 2021 2020 2019 and prior Revolving loans Total Consumer automotive Current $ 30,322 $ 20,387 $ 15,234 $ 8,368 $ 3,064 $ 1,849 $ — $ — $ 79,224 30–59 days past due 419 756 841 546 174 141 — — 2,877 60–89 days past due 131 338 390 240 75 56 — — 1,230 90 or more days past due 47 123 142 93 31 31 — — 467 Total consumer automotive (a) 30,919 21,604 16,607 9,247 3,344 2,077 — — 83,798 Consumer mortgage Current 13 31 1,901 9,834 1,714 3,503 115 15 17,126 30–59 days past due — — 7 9 5 27 — — 48 60–89 days past due — — 4 4 1 4 — — 13 90 or more days past due — 2 2 9 1 30 1 2 47 Total consumer mortgage 13 33 1,914 9,856 1,721 3,564 116 17 17,234 Consumer other Credit Card Current — — — — — — 2,140 — 2,140 30–59 days past due — — — — — — 35 — 35 60–89 days past due — — — — — — 33 — 33 90 or more days past due — — — — — — 86 — 86 Total Credit Card — — — — — — 2,294 — 2,294 Total consumer other — — — — — — 2,294 — 2,294 Total consumer $ 30,932 $ 21,637 $ 18,521 $ 19,103 $ 5,065 $ 5,641 $ 2,410 $ 17 $ 103,326 (a) Certain consumer automotive loans are included in fair value hedging relationships. The amortized cost excludes a liability of $41 million related to basis adjustments for loans in closed portfolios with active hedges under the portfolio layer method at December 31, 2024. These basis adjustments would be allocated to the amortized cost of specific loans within the pool if the hedge was dedesignated. Refer to Note 21 for additional information. Origination year Revolving loans converted to term December 31, 2023 ($ in millions) 2023 2022 2021 2020 2019 2018 and prior Revolving loans Total Consumer automotive Current $ 30,677 $ 23,699 $ 14,209 $ 6,132 $ 3,306 $ 1,876 $ — $ — $ 79,899 30–59 days past due 539 1,041 739 270 181 122 — — 2,892 60–89 days past due 170 443 303 109 68 45 — — 1,138 90 or more days past due 64 167 122 44 32 28 — — 457 Total consumer automotive (a) 31,450 25,350 15,373 6,555 3,587 2,071 — — 84,386 Consumer mortgage Current 152 2,170 10,374 1,836 747 3,124 142 17 18,562 30–59 days past due 1 8 14 3 3 23 — 1 53 60–89 days past due — 2 4 3 — 6 1 — 16 90 or more days past due — 1 4 1 2 25 2 1 36 Total consumer mortgage 153 2,181 10,396 1,843 752 3,178 145 19 18,667 Consumer other Credit Card Current — — — — — — 1,828 — 1,828 30–59 days past due — — — — — — 39 — 39 60–89 days past due — — — — — — 34 — 34 90 or more days past due — — — — — — 89 — 89 Total Credit Card — — — — — — 1,990 — 1,990 Total consumer other (b) — — — — — — 1,990 — 1,990 Total consumer $ 31,603 $ 27,531 $ 25,769 $ 8,398 $ 4,339 $ 5,249 $ 2,135 $ 19 $ 105,043 (a) Certain consumer automotive loans are included in fair value hedging relationships. The amortized cost excludes a liability of $66 million related to basis adjustments for loans in closed portfolios with active hedges under the portfolio layer method at December 31, 2023. These basis adjustments would be allocated to the amortized cost of specific loans within the pool if the hedge was dedesignated. Refer to Note 21 for additional information. (b) Excludes Personal Lending finance receivables and loans, which were transferred to loans held-for-sale, and were included in assets of operations held-for-sale on our Consolidated Balance Sheet at December 31, 2023. We closed the sale of Ally Lending on March 1, 2024. Refer to Note 2 for additional information. Origination year Revolving loans converted to term December 31, 2024 ($ in millions) 2024 2023 2022 2021 2020 2019 and prior Revolving loans Total Commercial Commercial and industrial Automotive Pass $ 522 $ 336 $ 337 $ 125 $ 64 $ 52 $ 15,005 $ — $ 16,441 Special mention 3 38 15 25 3 1 1,694 — 1,779 Substandard — — — — — — 33 — 33 Doubtful — — — — — — 6 — 6 Total automotive 525 374 352 150 67 53 16,738 — 18,259 Other Pass 707 296 261 199 18 205 5,047 84 6,817 Special mention — — 394 280 186 76 226 32 1,194 Substandard — 27 — 23 46 54 12 4 166 Doubtful — — — — — 26 9 — 35 Total other 707 323 655 502 250 361 5,294 120 8,212 Commercial real estate Pass 959 904 1,228 1,030 757 1,137 — 36 6,051 Special mention 6 51 69 57 35 3 — — 221 Doubtful — — 1 — — 1 — — 2 Total commercial real estate 965 955 1,298 1,087 792 1,141 — 36 6,274 Total commercial $ 2,197 $ 1,652 $ 2,305 $ 1,739 $ 1,109 $ 1,555 $ 22,032 $ 156 $ 32,745 Origination year Revolving loans converted to term December 31, 2023 ($ in millions) 2023 2022 2021 2020 2019 2018 and prior Revolving loans Total Commercial Commercial and industrial Automotive Pass $ 509 $ 512 $ 165 $ 97 $ 58 $ 22 $ 16,446 $ — $ 17,809 Special mention 6 7 30 1 1 14 723 — 782 Substandard — 1 — — — — 44 — 45 Doubtful — — — — — 1 63 — 64 Total automotive 515 520 195 98 59 37 17,276 — 18,700 Other Pass 331 646 343 405 266 180 6,202 173 8,546 Special mention — 208 188 206 51 85 198 25 961 Substandard — — 46 3 — 83 25 11 168 Doubtful — — — — — 26 10 — 36 Loss — — — — 1 — — — 1 Total other 331 854 577 614 318 374 6,435 209 9,712 Commercial real estate Pass 971 1,452 1,129 884 607 811 100 26 5,980 Special mention 3 16 28 1 18 — — — 66 Substandard — 3 — — — 1 — — 4 Total commercial real estate 974 1,471 1,157 885 625 812 100 26 6,050 Total commercial $ 1,820 $ 2,845 $ 1,929 $ 1,597 $ 1,002 $ 1,223 $ 23,811 $ 235 $ 34,462 The following tables present gross charge-offs of our finance receivables and loans for each portfolio class by origination year during the years ended December 31, 2024, and 2023, respectively. Refer to Note 1 for additional information on our charge-off policy. Origination year Revolving loans converted to term December 31, 2024 ($ in millions) 2024 2023 2022 2021 2020 2019 and prior Revolving loans Total Consumer automotive (a) $ 160 $ 779 $ 943 $ 510 $ 137 $ 152 $ — $ — $ 2,681 Consumer mortgage — — — 1 — 1 — — 2 Consumer other Credit Card — — — — — — 246 16 262 Total consumer other — — — — — — 246 16 262 Total consumer 160 779 943 511 137 153 246 16 2,945 Commercial Commercial and industrial Automotive — — — — — 1 2 — 3 Total commercial — — — — — 1 2 — 3 Total finance receivables and loans $ 160 $ 779 $ 943 $ 511 $ 137 $ 154 $ 248 $ 16 $ 2,948 (a) Excludes $5 million of write-downs from transfers to held-for-sale from the completion of a retail securitization transaction during the year ended December 31, 2024, resulting in the deconsolidation of the assets and liabilities from our Consolidated Balance Sheet. Origination year Revolving loans converted to term December 31, 2023 ($ in millions) 2023 2022 2021 2020 2019 2018 and prior Revolving loans Total Consumer automotive (a) $ 225 $ 952 $ 651 $ 194 $ 142 $ 120 $ — $ — $ 2,284 Consumer mortgage — — — — — 3 — — 3 Consumer other Personal Lending (b) 14 82 29 3 — — — — 128 Credit Card — — — — — — 165 10 175 Total consumer other 14 82 29 3 — — 165 10 303 Total consumer 239 1,034 680 197 142 123 165 10 2,590 Commercial Commercial and industrial Automotive — — — — — 5 19 — 24 Other — — — — 79 23 4 — 106 Total commercial — — — — 79 28 23 — 130 Total finance receivables and loans $ 239 $ 1,034 $ 680 $ 197 $ 221 $ 151 $ 188 $ 10 $ 2,720 (a) Excludes $41 million of write-downs from transfers to held-for-sale from the sales of retained interests related to securitizations during 2023, resulting in the deconsolidation of the assets and liabilities from our Consolidated Balance Sheet. (b) Excludes $174 million of write-downs from the transfer to held-for-sale related to Personal Lending. Refer to Note 2 for additional information.
Schedule of Past Due Financing Receivables	The following table presents an analysis of our past-due commercial finance receivables and loans recorded at amortized cost basis. ($ in millions) 30–59 days past due 60–89 days past due 90 days or more past due Total past due Current Total finance receivables and loans December 31, 2024 Commercial Commercial and industrial Automotive $ 5 $ — $ — $ 5 $ 18,254 $ 18,259 Other 35 — — 35 8,177 8,212 Commercial real estate 1 — 1 2 6,272 6,274 Total commercial $ 41 $ — $ 1 $ 42 $ 32,703 $ 32,745 December 31, 2023 Commercial Commercial and industrial Automotive $ — $ — $ — $ — $ 18,700 $ 18,700 Other 2 — 3 5 9,707 9,712 Commercial real estate — — — — 6,050 6,050 Total commercial $ 2 $ — $ 3 $ 5 $ 34,457 $ 34,462
Schedule of Loan Modifications and Troubled Debt Restructuring	The following tables present the amortized cost basis of loans that were modified subsequent to origination during the years ended December 31, 2024, and 2023, respectively, for each portfolio segment, by modification type. For additional information on loan modification types in scope of this disclosure, refer to Note 1. The below tables exclude consumer mortgage finance receivables and loans currently enrolled in a trial modification program. Trial modifications generally represent a three-month period during which the borrower makes monthly payments under the anticipated modified payment terms. If the borrower successfully completes the trial loan modification program, the contractual terms of the loan are updated and the modification is considered permanent. As of December 31, 2024, and 2023, there were $4 million and $5 million of consumer mortgage finance receivables and loans in a trial modification program, respectively. Payment extensions Year ended December 31, 2024 ($ in millions) Payment deferrals Contractual maturity extensions Principal forgiveness Interest rate concessions Combination Total (a) Consumer automotive $ — $ 418 $ 5 $ — $ 2 $ 425 Consumer mortgage — 2 — — 1 3 Consumer other Credit Card — — — 16 — 16 Total consumer other — — — 16 — 16 Total consumer — 420 5 16 3 444 Commercial Commercial and industrial Automotive 2 — — 7 — 9 Other — 168 — — 14 182 Commercial real estate — — — — 1 1 Total commercial 2 168 — 7 15 192 Total finance receivables and loans $ 2 $ 588 $ 5 $ 23 $ 18 $ 636 (a) Represents 0.5% of total finance receivables and loans outstanding as of December 31, 2024. Payment extensions Year ended December 31, 2023 ($ in millions) Payment deferrals (a) Contractual maturity extensions Principal forgiveness Interest rate concessions Combination Total (b) Consumer automotive $ — $ 234 $ 13 $ — $ 28 $ 275 Consumer mortgage — 4 — — 4 8 Consumer other Credit Card — — — 13 — 13 Total consumer other — — — 13 — 13 Total consumer — 238 13 13 32 296 Commercial Commercial and industrial Other 36 46 — — — 82 Total commercial 36 46 — — — 82 Total finance receivables and loans $ 36 $ 284 $ 13 $ 13 $ 32 $ 378 (a) Includes a commercial and industrial loan within our Corporate Finance operations that was also granted a three-month contractual maturity extension during the year ended December 31, 2023. (b) Represents 0.3% of total finance receivables and loans outstanding as of December 31, 2023. Total commitments to lend additional funds to borrowers whose loans were modified during the years ended December 31, 2024, and 2023, were $39 million and $6 million as of December 31, 2024, and 2023, respectively. The following tables present the financial effect of loan modifications that occurred during the years ended December 31, 2024, and 2023, respectively. Payment extensions (a) Principal forgiveness Interest rate concessions (a) Combination (a) (b) (c) Year ended December 31, 2024 ($ in millions) Number of months extended/deferred Amount forgiven Initial rate Revised rate Remaining term Revised remaining term Initial rate Revised rate Consumer automotive 30 $ 2 — % — % 72 85 14.3 % 12.0 % Consumer mortgage 176 — — — 305 449 4.1 3.1 Consumer other Credit Card — 2 29.6 7.3 — — — — Total consumer other — $ 2 29.6 7.3 — — — — Commercial Commercial and industrial Automotive 6 $ — 5.0 % 3.0 % — — — % — % Other 37 — — — 4 60 5.5 4.3 Commercial real estate — — — — 84 93 11.0 6.0 Total commercial 36 $ — 5.0 3.0 7 61 5.7 4.3 (a) Calculated using a weighted-average balance for each portfolio class. (b) Term is presented in number of months. (c) Some consumer mortgage combination loan modifications include deferrals of principal. The weighted average number of months deferred for these loans was 325 months. Payment extensions (a) Principal forgiveness Interest rate concessions (a) Combination (a) (b) (c) Year ended December 31, 2023 ($ in millions) Number of months extended/deferred Amount forgiven Initial rate Revised rate Remaining term Revised remaining term Initial rate Revised rate Consumer automotive 29 $ 3 — % — % 74 86 10.3 % 9.5 % Consumer mortgage 132 — — — 286 442 4.4 3.1 Consumer other Credit Card — — 30.0 8.0 — — — — Total consumer other — $ — 30.0 8.0 — — — — Commercial Commercial and industrial Other (d) 15 $ — — % — % — — — % — % Total commercial 15 $ — — — — — — — (a) Calculated using a weighted-average balance for each portfolio class. (b) Term is presented in number of months. (c) Some consumer mortgage combination loan modifications include deferrals of principal. The weighted average number of months deferred for these loans was 207 months. (d) Includes a commercial and industrial loan within our Corporate Finance operations that was also granted a three-month contractual maturity extension during the year ended December 31, 2023. The following tables present the subsequent performance of loans recorded at amortized cost, by portfolio segment and credit quality indicator, that were modified within the 12 months prior to December 31, 2024, and 2023, respectively. December 31, 2024 ($ in millions) Current 30–59 days past due 60–89 days past due 90 or more days past due Total Consumer automotive Contractual maturity extensions $ 318 $ 68 $ 25 $ 7 $ 418 Principal forgiveness — — — 5 5 Combination 2 — — — 2 Total consumer automotive 320 68 25 12 425 Consumer mortgage Contractual maturity extensions 1 — 1 — 2 Combination 1 — — — 1 Total consumer mortgage 2 — 1 — 3 Consumer other Credit Card Interest rate concessions 10 2 1 3 16 Total consumer other 10 2 1 3 16 Total consumer $ 332 $ 70 $ 27 $ 15 $ 444 December 31, 2024 ($ in millions) Pass Special mention Substandard Doubtful Total Commercial and industrial Automotive Payment deferrals $ — $ — $ 2 $ — $ 2 Interest rate concessions — — — 7 7 Other Contractual maturity extensions 113 — 55 — 168 Combination — — 14 — 14 Commercial real estate Combination — — — 1 1 Total commercial $ 113 $ — $ 71 $ 8 $ 192 December 31, 2023 ($ in millions) Current 30–59 days past due 60–89 days past due 90 or more days past due Total Consumer automotive Contractual maturity extensions $ 202 $ 24 $ 7 $ 1 $ 234 Principal forgiveness 7 1 — 5 13 Combination 25 2 — 1 28 Total consumer automotive 234 27 7 7 275 Consumer mortgage Contractual maturity extensions 4 — — — 4 Combination 2 — — 2 4 Total consumer mortgage 6 — — 2 8 Consumer other Credit Card Interest rate concessions 7 2 1 3 13 Total consumer other 7 2 1 3 13 Total consumer $ 247 $ 29 $ 8 $ 12 $ 296 December 31, 2023 ($ in millions) Pass Special mention Substandard Doubtful Total Commercial and industrial Other Payment deferrals (a) $ — $ — $ — $ 36 $ 36 Contractual maturity extensions 34 7 5 — 46 Total commercial $ 34 $ 7 $ 5 $ 36 $ 82 (a) Includes a commercial and industrial loan within our Corporate Finance operations that was also granted a three-month contractual maturity extension during the year ended December 31, 2023. The following table presents information related to finance receivables and loans recorded at amortized cost modified in connection with a TDR during the period. Year ended December 31, 2022 ($ in millions) Number of loans Pre-modification amortized cost basis Post-modification amortized cost basis Consumer automotive 49,773 $ 831 $ 805 Consumer mortgage 31 13 13 Consumer other Credit Card 2,853 5 5 Total consumer other 2,853 5 5 Total consumer 52,657 849 823 Commercial Commercial and industrial Other 5 461 466 Total commercial 5 461 466 Total finance receivables and loans 52,662 $ 1,310 $ 1,289
Schedule of Finance Receivables and Loans Redefaulted During the Period	The following table presents information about finance receivables and loans recorded at amortized cost that have redefaulted during the reporting period and were within 12 months or less of being modified as a TDR. Redefault is when finance receivables and loans meet the requirements for evaluation under our charge-off policy except for commercial finance receivables and loans, where redefault is defined as 90 days past due. Year ended December 31, 2022 ($ in millions) Number of loans Amortized cost Charge-off amount Consumer automotive 9,227 $ 143 $ 64 Consumer mortgage 4 2 — Consumer Other Credit Card 457 — — Total consumer other 457 — — Total consumer 9,688 145 64 Commercial Commercial and industrial Other 1 1 31 Total commercial 1 1 31 Total finance receivables and loans 9,689 $ 146 $ 95
Schedule of Consumer Concentration Risk	The following table shows the percentage of consumer automotive, consumer mortgage, and consumer other finance receivables and loans by state concentration based on amortized cost. 2024 (a) 2023 December 31, Consumer automotive Consumer mortgage Consumer other Consumer automotive Consumer mortgage Consumer other (b) California 8.5 % 39.9 % 9.3 % 8.5 % 39.2 % 9.4 % Texas 13.5 7.2 7.8 13.7 7.3 7.6 Florida 9.3 6.2 9.1 9.5 6.5 9.0 North Carolina 4.6 1.9 3.0 4.3 1.9 2.9 Pennsylvania 4.5 2.1 4.1 4.5 2.1 4.2 Georgia 4.0 2.9 3.7 4.1 2.9 3.7 New York 3.8 1.9 5.4 3.7 1.9 5.4 New Jersey 3.3 2.5 3.5 3.2 2.4 3.7 Illinois 3.2 2.8 4.6 3.3 2.8 4.6 Ohio 3.3 0.4 4.5 3.4 0.4 4.5 Other United States 42.0 32.2 45.0 41.8 32.6 45.0 Total consumer loans 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % (a) Presentation is in descending order as a percentage of total consumer finance receivables and loans at December 31, 2024. (b) Excludes Personal Lending finance receivables and loans, which were transferred to loans held-for-sale, and were included in assets of operations held-for-sale on our Consolidated Balance Sheet at December 31, 2023. We closed the sale of Ally Lending on March 1, 2024. Refer to Note 2 for additional information.
Schedule of Commercial Concentration Risk	The following table presents the percentage of total commercial real estate finance receivables and loans by state concentration based on amortized cost. December 31, 2024 2023 Florida 16.0 % 17.6 % Texas 14.1 13.6 California 6.6 7.9 Ohio 5.6 5.9 New York 5.4 4.5 North Carolina 4.8 5.0 Michigan 4.1 5.4 Georgia 3.3 3.0 Missouri 2.9 2.8 Illinois 2.6 2.6 Other United States 34.6 31.7 Total commercial real estate finance receivables and loans 100.0 % 100.0 %
Schedule of Commercial Criticized Risk Exposure	The following table presents the percentage of total commercial criticized finance receivables and loans by industry concentration based on amortized cost. December 31, 2024 2023 Industry Automotive 64.4 % 54.0 % Electronics 12.8 13.4 Services 9.0 12.8 Other 13.8 19.8 Total commercial criticized finance receivables and loans 100.0 % 100.0 %

Leasing (Tables)

Leasing (Tables)	12 Months Ended
	Dec. 31, 2024
Leases [Abstract]
Schedule of Lessee, Operating Lease, Liability, Maturity	The following table presents future minimum rental payments we are required to make under operating leases that have commenced as of December 31, 2024, and that have noncancelable lease terms expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 38 2026 35 2027 25 2028 17 2029 1 2030 and thereafter 1 Total undiscounted cash flows 117 Difference between undiscounted cash flows and discounted cash flows (6) Total lease liability $ 111
Schedule of Lease, Cost	The following table details the components of total net operating lease expense. Year ended December 31, ($ in millions) 2024 2023 2022 Operating lease expense $ 30 $ 29 $ 33 Variable lease expense 4 5 4 Total lease expense, net (a) $ 34 $ 34 $ 37 (a) Included in other operating expenses in our Consolidated Statement of Income.
Schedule of Property Subject to or Available for Operating Lease	The following table details our investment in operating leases. Year ended December 31, ($ in millions) 2024 2023 Vehicles $ 9,519 $ 11,015 Accumulated depreciation (1,528) (1,930) Investment in operating leases, net $ 7,991 $ 9,085
Schedule of Lessor, Operating Lease, Payments to be Received, Maturity	The following table presents future minimum rental payments we have the right to receive under operating leases with noncancelable lease terms expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 1,269 2026 881 2027 369 2028 35 2029 3 Total lease payments from operating leases $ 2,557
Schedule of Depreciation Expense on Operating Lease Assets	The following table summarizes the components of depreciation expense on operating lease assets. Year ended December 31, ($ in millions) 2024 2023 2022 Depreciation expense on operating lease assets (excluding remarketing gains) (a) $ 868 $ 1,051 $ 1,084 Remarketing gains, net (132) (211) (170) Net depreciation expense on operating lease assets $ 736 $ 840 $ 914 (a) Includes variable lease payments related to excess mileage and excessive wear and tear on vehicles of $21 million, $9 million, and $7 million during the years ended December 31, 2024, 2023, and 2022, respectively.
Schedule of Finance Lease, Liability, Maturity	The following table presents future minimum rental payments we have the right to receive under finance leases with noncancelable lease terms expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 188 2026 159 2027 122 2028 64 2029 32 2030 and thereafter 11 Total undiscounted cash flows 576 Difference between undiscounted cash flows and discounted cash flows (80) Present value of lease payments recorded as lease receivable $ 496

Securitizations and Variable _2

Securitizations and Variable Interest Entities (Tables)	12 Months Ended
	Dec. 31, 2024
Securitizations And Variable Interest Entities [Abstract]
Schedule of Variable Interest Entities	The following table presents our involvement in consolidated and nonconsolidated VIEs in which we hold variable interests. We have excluded certain transactions with nonconsolidated entities from the balances presented in the table below, where our only continuing involvement relates to financial interests obtained through the ordinary course of business, primarily from lending and investing arrangements. For additional detail related to the assets and liabilities of consolidated variable interest entities, refer to the Consolidated Balance Sheet. December 31, ($ in millions) Carrying value of total assets Carrying value of total liabilities Assets sold to nonconsolidated VIEs (a) Maximum exposure to loss in nonconsolidated VIEs 2024 On‑balance sheet variable interest entities Consumer automotive $ 12,821 (b) $ 1,683 (c) $ — $ — Off-balance sheet variable interest entities Consumer automotive (d) 92 (e) — 2,885 2,977 (f) Consumer other (g) — — 86 86 Commercial other 2,768 (h) 1,022 (i) — 3,482 (j) Total $ 15,681 $ 2,705 $ 2,971 $ 6,545 2023 On-balance sheet variable interest entities Consumer automotive $ 16,329 (b) $ 1,614 (c) $ — $ — Off-balance sheet variable interest entities Consumer automotive (d) 81 (e) — 2,514 2,595 (f) Consumer other (g) — — 125 125 Commercial other 2,516 (h) 974 (i) — 2,738 (j) Total $ 18,926 $ 2,588 $ 2,639 $ 5,458 (a) Asset values represent the current unpaid principal balance of outstanding consumer automotive and credit card finance receivables and loans within the VIEs. (b) Includes $8.2 billion and $9.3 billion of assets that were not encumbered by VIE beneficial interests held by third parties at December 31, 2024, and December 31, 2023, respectively. Ally or consolidated affiliates hold the interests in these assets. (c) Includes $118 million and $100 million of liabilities that were not obligations to third-party beneficial interest holders at December 31, 2024, and December 31, 2023, respectively. (d) Includes activity where we sell loans through a pass-through program to a third party. (e) Represents retained notes and certificated residual interests, of which $88 million and $78 million were classified as held-to-maturity securities at December 31, 2024, and December 31, 2023, respectively, and $4 million and $3 million were classified as other assets at December 31, 2024, and December 31, 2023, respectively. These assets represent our compliance with the risk retention rules under the Dodd-Frank Act, requiring us to retain at least five percent of the credit risk of the assets underlying asset-backed securitizations. (f) Maximum exposure to loss represents the current unpaid principal balance of outstanding loans based on our customary representation and warranty provisions. This measure is based on the unlikely event that all the loans have underwriting defects or other defects that trigger a representation and warranty provision and the collateral supporting the loans are worthless. This required disclosure is not an indication of our expected loss. (g) Represents balances from Ally Credit Card. (h) Amounts are classified as other assets except for $50 million and $44 million classified as equity securities at December 31, 2024, and December 31, 2023, respectively. (i) Amounts are classified as accrued expenses and other liabilities. (j) For certain nonconsolidated affordable housing entities, maximum exposure to loss represents the yield we guaranteed investors through long-term guarantee contracts. The amount disclosed is based on the unlikely event that the yield delivered to investors in the form of LIHTCs is recaptured. For nonconsolidated equity investments, maximum exposure to loss represents our outstanding investment, additional committed capital, and LIHTCs subject to recapture. The amount disclosed is based on the unlikely event that our committed capital is funded, our investments become worthless, and the tax credits previously delivered to us are recaptured. This required disclosure is not an indication of our expected loss.
Schedule of Cash Flows with Nonconsolidated Special-Purpose Entities	The following table summarizes cash flows received and paid related to SPEs and asset-backed financings where the transfer is accounted for as a sale and we have a continuing involvement with the transferred consumer automotive and credit card assets (for example, servicing) that were outstanding during the years ended December 31, 2024, 2023, and 2022. Additionally, this table contains information regarding cash flows received from and paid to nonconsolidated SPEs that existed during each period. Year ended December 31, ($ in millions) 2024 2023 2022 Consumer automotive Cash proceeds from transfers completed during the period $ 1,594 $ 1,131 $ 238 Servicing fees 58 19 1 Cash flows received on retained interests in securitization entities 54 4 — Other cash flows 2 1 — Cash disbursements for repurchases during the period 1 — — Consumer other (a) Cash proceeds from transfers completed during the period 46 117 137 Servicing fees 6 8 13 Total $ 1,761 $ 1,280 $ 389 (a) Represents activity from Ally Credit Card.
Schedule of Quantitative Information and Net Credit Losses about Securitized and Other Financial Assets Managed Together	The following tables present quantitative information about off-balance sheet securitizations and whole-loan sales where we have continuing involvement. Total amount Amount 60 days or more past due December 31, ($ in millions) 2024 2023 2024 2023 Off-balance-sheet securitization entities Consumer automotive $ 1,730 $ 1,558 $ 22 $ 11 Whole-loan sales (a) Consumer automotive 1,155 956 83 44 Consumer other 86 125 10 17 Total $ 2,971 $ 2,639 $ 115 $ 72 (a) Whole-loan sales are not part of a securitization transaction, but represent consumer automotive and credit card pools of loans sold to third-party investors. Net credit losses Year ended December 31, ($ in millions) 2024 2023 Off-balance-sheet securitization entities Consumer automotive $ 20 $ 2 Whole-loan sales (a) Consumer automotive 79 27 Consumer other 36 31 Total $ 135 $ 60 (a) Whole-loan sales are not part of a securitization transaction, but represent consumer automotive and credit card pools of loans sold to third-party investors.

Premiums Receivable and Other_2

Premiums Receivable and Other Insurance Assets (Tables)	12 Months Ended
	Dec. 31, 2024
Premiums Receivable Disclosure [Abstract]
Premiums Receivable and Other Insurance Assets	Premiums receivable and other insurance assets consisted of the following. December 31, ($ in millions) 2024 2023 Prepaid reinsurance premiums $ 594 $ 580 Reinsurance recoverable on unpaid losses 60 66 Reinsurance recoverable on paid losses 44 38 Premiums receivable 206 154 Deferred policy and service contract acquisition costs 1,886 1,911 Total premiums receivable and other insurance assets $ 2,790 $ 2,749

Other Assets (Tables)

Other Assets (Tables)	12 Months Ended
	Dec. 31, 2024
Other Assets [Abstract]
Schedule of Other Assets	The components of other assets were as follows. December 31, ($ in millions) 2024 2023 Property and equipment at cost $ 2,226 $ 2,153 Accumulated depreciation (973) (871) Net property and equipment 1,253 1,282 Proportional amortization investments (a) (b) 2,131 1,866 Net deferred tax assets 1,916 1,247 Accrued interest, fees, and rent receivables (c) 929 935 Nonmarketable equity investments 789 886 Restricted cash and cash equivalents (d) 788 87 Equity-method investments (a) (e) 632 651 Goodwill 551 669 Other accounts receivable 312 189 Restricted cash held for securitization trusts (f) 300 407 Operating lease right-of-use assets 92 90 Net intangible assets 54 73 Other assets 913 1,036 Total other assets (g) $ 10,660 $ 9,418 (a) Proportional amortization investments includes qualifying LIHTC, NMTC, and HTC investments as of December 31, 2024. Prior to the adoption of ASU 2023-02 on January 1, 2024, NMTC and HTC investments were included in equity-method investments. Refer to Note 1 for additional information. (b) Presented gross of the associated unfunded commitment. Refer to Note 16 for further information. (c) Primarily relates to accrued interest, fees, and rent receivables related to our consumer automotive and commercial automotive finance receivables and loans. (d) Primarily represents restricted cash equivalents funded through the issuance of credit-linked notes. Additionally, includes a number of arrangements with third parties where certain restrictions are placed on balances we hold due to collateral agreements associated with operational processes with a third-party bank, partner, or letter of credit arrangements and corresponding collateral requirements. Refer to Note 20 for further information about the issuance of credit-linked notes. (e) Primarily relates to investments made in connection with our CRA program. (f) Includes restricted cash collected from customer payments on securitized receivables, which are distributed by us to investors as payments on the related secured debt, and cash reserve deposits utilized as a form of credit enhancement for various securitization transactions. (g) Excludes Ally Lending other assets which were transferred to assets of operations held-for-sale as of December 31, 2023. We closed the sale of Ally Lending on March 1, 2024. Refer to Note 2 for additional information.
Schedule of Activity in Proportional Amortization Investment	The following table summarizes information about our proportional amortization investments. Year ended December 31, ($ in millions) 2024 2023 2022 Tax credits and other tax benefits from proportional amortization investments (a) (b) $ 251 $ 200 $ 177 Investment amortization expense recognized as a component of income tax expense (a) 203 157 147 Net benefit from proportional amortization investments (a) $ 48 $ 43 $ 30 (a) Amounts are included within income tax expense deferred income taxes, other assets, and other liabilities (b) There were no impairment losses recognized during the years ended December 31, 2024, 2023, and 2022, resulting from the forfeiture or ineligibility of tax credits or other circumstances.
Schedule of Equity Securities without Readily Determinable Fair Value	The total carrying value of the nonmarketable equity investments held at December 31, 2024, and December 31, 2023, including cumulative unrealized gains and losses, was as follows. December 31, ($ in millions) 2024 2023 FRB stock $ 440 $ 392 FHLB stock 258 392 Equity investments without a readily determinable fair value Cost basis 74 74 Adjustments Upward adjustments 53 51 Downward adjustments (including impairment) (36) (23) Carrying amount, equity investments without a readily determinable fair value 91 102 Nonmarketable equity investments $ 789 $ 886 During the years ended December 31, 2024, and 2023, unrealized gains and losses included in the carrying value of the nonmarketable equity investments still held as of December 31, 2024, and 2023, were as follows. Year ended December 31, ($ in millions) 2024 2023 Upward adjustments $ 2 $ 8 Downward adjustments (including impairment) (a) $ (15) $ (17) (a) No impairment on FHLB and FRB stock was recognized during both years ended December 31, 2024, and 2023.
Schedule of Goodwill	The carrying balance of goodwill by reportable operating segment was as follows. ($ in millions) Automotive Finance operations Insurance operations Corporate and Other (a) Total Goodwill at December 31, 2022 $ 20 $ 27 $ 775 $ 822 Goodwill impairment — — (149) (149) Transfer to assets of operations held-for-sale — — (4) (4) Goodwill at December 31, 2023 $ 20 $ 27 $ 622 $ 669 Goodwill impairment — — (118) (118) Goodwill at December 31, 2024 $ 20 $ 27 $ 504 $ 551 (a) Includes $361 million and $479 million of goodwill associated with Ally Credit Card at December 31, 2024, and December 31, 2023, respectively, and $143 million of goodwill associated with Ally Invest at both December 31, 2024, and December 31, 2023.
Schedule of Finite-Lived Intangible Assets	The net carrying value of intangible assets by class was as follows. 2024 2023 December 31, ($ in millions) Gross intangible assets Accumulated amortization Net carrying value Gross intangible assets Accumulated amortization Net carrying value Technology $ 117 $ (77) $ 40 $ 117 $ (64) $ 53 Customer lists 41 (41) — 41 (39) 2 Purchased credit card relationships 25 (11) 14 25 (7) 18 Trademarks 2 (2) — 2 (2) — Total intangible assets (a) $ 185 $ (131) $ 54 $ 185 $ (112) $ 73 (a) Excludes $22 million of gross intangible assets and $22 million of accumulated amortization that were transferred to assets of operations held-for-sale related to Ally Lending as of December 31, 2023. The sale was closed on March 1, 2024. Refer to Note 2 for additional information.
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	Estimated future amortization expense of intangible assets are as follows. Year ended December 31, ($ in millions) 2025 $ 14 2026 14 2027 13 2028 13 Total estimated future amortization expense $ 54

Deposit Liabilities (Tables)

Deposit Liabilities (Tables)	12 Months Ended
	Dec. 31, 2024
Deposits [Abstract]
Schedule of Deposit Liabilities	Deposit liabilities consisted of the following. December 31, ($ in millions) 2024 2023 Noninterest-bearing deposits $ 131 $ 139 Interest-bearing deposits Savings, money market, and spending accounts 104,201 99,340 Certificates of deposit 47,242 55,187 Total deposit liabilities $ 151,574 $ 154,666
Schedule of Time Deposit Maturities	The following table presents the scheduled maturity of total certificates of deposit at December 31, 2024. ($ in millions) Due in 2025 $ 37,228 Due in 2026 5,487 Due in 2027 2,285 Due in 2028 1,582 Due in 2029 660 Total certificates of deposit (a) $ 47,242 (a) Includes $4.8 billion of certificates of deposit that are estimated to be uninsured. In some instances, certificates of deposits in excess of federal insurance limits may be insured based upon the number of account owners, beneficiaries, and accounts held.

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
Schedule of Short-term Debt	The following table presents the composition of our short-term borrowings portfolio. 2024 2023 December 31, ($ in millions) Unsecured Secured (a) Total Unsecured Secured (a) Total Federal Home Loan Bank $ — $ 1,625 $ 1,625 $ — $ 2,550 $ 2,550 Securities sold under agreements to repurchase — — — — 747 747 Total short-term borrowings $ — $ 1,625 $ 1,625 $ — $ 3,297 $ 3,297 Weighted average interest rate (b) 4.7 % 5.6 % (a) Refer to the section below titled Long-Term Debt for further details on assets restricted as collateral for payment of the related debt. (b) Based on the debt outstanding and the interest rate at December 31, of each year.
Schedule of Long-term Debt	The following table presents the composition of our long-term debt portfolio. December 31, ($ in millions) Amount Interest rate Weighted average stated interest rate (a) Due date range 2024 Unsecured debt Fixed rate (b) $ 10,974 Hedge basis adjustments (c) 88 Total unsecured debt 11,062 1.15–8.00% 6.25 % 2025–2040 Secured debt Fixed rate 6,358 Variable rate (d) 75 Total secured debt (e) (f) 6,433 1.96–12.75% 4.32 % 2025–2032 Total long-term debt $ 17,495 2023 Unsecured debt Fixed rate (b) $ 10,327 Hedge basis adjustments (c) 97 Total unsecured debt 10,424 0.60–8.00% 6.03 % 2024–2033 Secured debt Fixed rate 7,031 Variable rate (d) 113 Hedge basis adjustment (c) 2 Total secured debt (e) (f) 7,146 0.89–5.29% 3.31 % 2024–2031 Total long-term debt $ 17,570 (a) Based on the debt outstanding and the interest rate at December 31 of each year excluding any impacts of interest rate hedges. (b) Includes subordinated debt of $2.0 billion and $1.5 billion at December 31, 2024, and 2023, respectively. (c) Represents the basis adjustment associated with the application of hedge accounting on certain of our long-term debt positions. Refer to Note 21 for additional information. (d) Represents long-term debt that does not have a stated interest rate. (e) Includes $1.6 billion and $1.5 billion of VIE secured debt at December 31, 2024, and 2023, respectively. (f) Includes advances from the FHLB of Pittsburgh of $4.2 billion and $5.6 billion at December 31, 2024, and 2023, respectively. 2024 2023 December 31, ($ in millions) Unsecured Secured Total Unsecured Secured Total Long-term debt (a) Due within one year $ 2,408 $ 2,411 $ 4,819 $ 1,409 $ 2,931 $ 4,340 Due after one year 8,654 4,022 12,676 9,015 4,215 13,230 Total long-term debt $ 11,062 $ 6,433 $ 17,495 $ 10,424 $ 7,146 $ 17,570 (a) Includes basis adjustments related to the application of hedge accounting. Refer to Note 21 for additional information.
Schedule of Maturities of Long-term Debt	The following table presents the scheduled remaining maturity of long-term debt at December 31, 2024, assuming no early redemptions will occur. The amounts below include adjustments to the carrying value resulting from the application of hedge accounting. The actual payment of secured debt may vary based on the payment activity of the related pledged assets. ($ in millions) 2025 2026 2027 2028 2029 2030 and thereafter Total Unsecured Long-term debt $ 2,482 $ 151 $ 1,622 $ 865 $ 1,029 $ 5,676 $ 11,825 Original issue discount (74) (82) (94) (107) (123) (283) (763) Total unsecured 2,408 69 1,528 758 906 5,393 11,062 Secured Long-term debt 2,410 2,159 1,407 399 39 19 6,433 Total long-term debt $ 4,818 $ 2,228 $ 2,935 $ 1,157 $ 945 $ 5,412 $ 17,495
Schedule of Pledged Assets for the Payment of the Related Secured Borrowings and Repurchase Agreements	The following table summarizes assets restricted as collateral for the payment of the related debt obligation. December 31, ($ in millions) 2024 2023 Consumer automotive finance receivables $ 38,316 $ 40,805 Consumer mortgage finance receivables 17,269 18,703 Commercial finance receivables 6,297 5,968 Investment securities (amortized cost of $2,822 and $4,030) (a) 2,946 4,036 Other assets (b) 669 — Total assets restricted as collateral (c) (d) $ 65,497 $ 69,512 Secured debt (e) $ 8,058 $ 10,443 (a) A portion of the restricted investment securities at December 31, 2023, was restricted under repurchase agreements. Refer to the section above titled Short-Term Borrowings for information on the repurchase agreements. (b) Includes the collateral accounts restricted for the payment of credit-linked notes recorded within restricted cash and cash equivalents. Excludes restricted cash and cash reserves for securitization trusts. Refer to Note 13 and Note 20 for additional information. (c) All restricted assets are those of Ally Bank. (d) Ally Bank has an advance agreement with the FHLB, and had assets pledged to secure borrowings that were restricted as collateral to the FHLB totaling $26.5 billion and $27.9 billion at December 31, 2024, and December 31, 2023, respectively. These assets were primarily composed of consumer mortgage finance receivables and loans as well as mortgage-backed securities. Ally Bank has access to the FRB Discount Window and had assets pledged and restricted as collateral to the FRB totaling $33.8 billion and $34.0 billion at December 31, 2024, and December 31, 2023, respectively. These assets were composed of consumer automotive finance receivables and loans. Availability under these programs is only for the operations of Ally Bank and cannot be used to fund the operations or liabilities of Ally or its other subsidiaries. (e) Includes $1.6 billion and $3.3 billion of short-term borrowings at December 31, 2024 , and December 31, 2023, respectively.

Accrued Expenses and Other Li_2

Accrued Expenses and Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2024
Accounts Payable and Accrued Liabilities [Abstract]
Schedule of Accrued Expenses and Other Liabilities	The components of accrued expenses and other liabilities were as follows. December 31, ($ in millions) 2024 2023 Unfunded commitments for proportional amortization investments (a) $ 1,019 $ 973 Accounts payable 505 509 Employee compensation and benefits 424 409 Reserves for insurance losses and loss adjustment expenses (b) 189 140 Deferred revenue 122 103 Operating lease liabilities 111 113 Other liabilities 444 479 Total accrued expenses and other liabilities (c) $ 2,814 $ 2,726 (a) Primarily relates to unfunded commitments for investments in qualified affordable housing projects. (b) Refer to Note 6 for further information. (c) Excludes Ally Lending accrued expenses and other liabilities, which were transferred to liabilities of operations held-for-sale as of December 31, 2023. We closed the sale of Ally Lending on March 1, 2024. Refer to Note 2 for additional information.

Equity (Tables)

Equity (Tables)	12 Months Ended
	Dec. 31, 2024
Equity [Abstract]
Schedule of Stockholders Equity	The following table presents changes in the number of shares issued and outstanding. (shares in thousands) (a) 2024 2023 2022 Common stock Total issued at January 1, 511,861 507,683 504,522 New issuances Employee benefits and compensation plans 3,916 4,179 3,161 Total issued at December 31, 515,778 511,861 507,683 Treasury balance at January 1, (209,402) (208,358) (166,581) Repurchase of common stock (b) (988) (1,044) (41,778) Total treasury stock at December 31, (210,390) (209,402) (208,358) Total outstanding at December 31, 305,388 302,459 299,324 (a) Figures in the table may not recalculate exactly due to rounding. Number of shares issued, in treasury, and outstanding are calculated based on unrounded numbers. (b) Includes shares of common stock withheld to cover income taxes owed by participants in our share-based incentive plans. Refer to the section titled Capital Planning and Stress Tests
Schedule of Preferred Stock	The following table summarizes information about our preferred stock. December 31, 2024 2023 Series B preferred stock (a) Issuance date April 22, 2021 April 22, 2021 Carrying value ($ in millions) $ 1,335 $ 1,335 Par value (per share) $ 0.01 $ 0.01 Liquidation preference (per share) $ 1,000 $ 1,000 Number of shares authorized 1,350,000 1,350,000 Number of shares issued and outstanding 1,350,000 1,350,000 Dividend/coupon Prior to May 15, 2026 4.700% 4.700% On and after May 15, 2026 Five Year Treasury + 3.868% Five Year Treasury + 3.868% Series C preferred stock (a) Issuance date June 2, 2021 June 2, 2021 Carrying value ($ in millions) $ 989 $ 989 Par value (per share) $ 0.01 $ 0.01 Liquidation preference (per share) $ 1,000 $ 1,000 Number of shares authorized 1,000,000 1,000,000 Number of shares issued and outstanding 1,000,000 1,000,000 Dividend/coupon Prior to May 15, 2028 4.700% 4.700% On and after May 15, 2028 Seven Year Treasury + 3.481% Seven Year Treasury + 3.481% (a) We may, at our option, redeem the Series B and Series C shares on any dividend payment date on or after May 15, 2026, or May 15, 2028, respectively, or at any time within 90 days following a regulatory event that precludes the instruments from being included in additional Tier 1 capital.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2024
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Loss	The following table presents changes, net of tax, in each component of accumulated other comprehensive loss. Investment securities (a) ($ in millions) Available- Held-to-maturity securities Translation adjustments and net investment hedges (c) Cash flow hedges (c) Defined benefit pension plans Accumulated other comprehensive loss Balance at January 1, 2022 $ (95) $ — $ 19 $ 35 $ (117) $ (158) Net change (4,000) — (1) (17) 117 (3,901) Balance at December 31, 2022 (4,095) — 18 18 — (4,059) Net change 949 (682) 3 (27) — 243 Balance at December 31, 2023 (3,146) (682) 21 (9) — (3,816) Net change (161) 66 (1) (12) — (108) Balance at December 31, 2024 $ (3,307) $ (616) $ 20 $ (21) $ — $ (3,924) (a) For additional information on the securities transferred from available-for-sale to held-to-maturity during 2023, refer to Note 8. (b) Represents the after-tax difference between the fair value and amortized cost of our available-for-sale securities portfolio. Refer to Note 8 for additional information. (c) For additional information on derivative instruments and hedging activities, refer to Note 21.
Schedule of Reclassification Out of Accumulated Other Comprehensive Loss	The following tables present the before- and after-tax changes in each component of accumulated other comprehensive loss. Year ended December 31, 2024 ($ in millions) Before tax Tax effect After tax Investment securities Available-for-sale securities Net unrealized losses arising during the period $ (203) $ 45 $ (158) Less: Net realized gains reclassified to income from continuing operations 3 (a) — (b) 3 Net change (206) 45 (161) Held-to-maturity securities Less: Amortization of amounts previously recorded upon transfer from available-for-sale (87) (c) 21 (b) (66) Translation adjustments Net unrealized losses arising during the period (17) 4 (13) Net investment hedges (d) Net unrealized gains arising during the period 16 (4) 12 Cash flow hedges (d) Net unrealized losses arising during the period (28) 7 (21) Less: Net realized losses reclassified to income from continuing operations (12) (e) 3 (b) (9) Net change (16) 4 (12) Other comprehensive loss $ (136) $ 28 $ (108) (a) Includes gains reclassified to other gain (loss) on investments, net in our Consolidated Statement of Income. (b) Includes amounts reclassified to income tax expense from continuing operations in our Consolidated Statement of Income. (c) Includes amounts reclassified to interest and dividends on investment securities and other earning assets in our Consolidated Statement of Income. (d) For additional information on derivative instruments and hedging activities, refer to Note 21. (e) Includes losses reclassified to interest and fees on finance receivables and loans in our Consolidated Statement of Income. Year ended December 31, 2023 ($ in millions) Before tax Tax effect After tax Investment securities Available-for-sale securities Net unrealized gains arising during the period $ 338 $ (78) $ 260 Net unrealized loss on securities transferred to held-to-maturity (a) 911 (218) 693 Less: Net realized gains reclassified to income from continuing operations 5 (b) (1) (c) 4 Net change 1,244 (295) 949 Held-to-maturity securities Net unrealized loss on securities transferred from available-for-sale (a) (911) 218 (693) Less: Amortization of amounts previously recorded upon transfer from available-for-sale (14) (d) 3 (11) Net change (897) 215 (682) Translation adjustments Net unrealized gains arising during the period 6 (1) 5 Net investment hedges (e) Net unrealized losses arising during the period (3) 1 (2) Cash flow hedges (e) Net unrealized losses arising during the period (22) 6 (16) Less: Net realized gains reclassified to income from continuing operations 14 (f) (3) (c) 11 Net change (36) 9 (27) Other comprehensive income $ 314 $ (71) $ 243 (a) Includes unrealized losses on securities transferred from available-for-sale to held-to-maturity. Refer to Note 8 for additional information. (b) Includes gains reclassified to other gain (loss) on investments, net in our Consolidated Statement of Income. (c) Includes amounts reclassified to income tax expense from continuing operations in our Consolidated Statement of Income. (d) Includes amounts reclassified to interest and dividends on investment securities and other earning assets in our Consolidated Statement of Income. (e) For additional information on derivative instruments and hedging activities, refer to Note 21. (f) Includes gains reclassified to interest and fees on finance receivables and loans in our Consolidated Statement of Income. Year ended December 31, 2022 ($ in millions) Before tax Tax effect After tax Investment securities Available-for-sale securities Net unrealized losses arising during the period $ (5,222) $ 1,240 $ (3,982) Less: Net realized gains reclassified to income from continuing operations 23 (a) (5) (b) 18 Net change (5,245) 1,245 (4,000) Translation adjustments Net unrealized losses arising during the period (10) 2 (8) Net investment hedges (c) Net unrealized gains arising during the period 8 (1) 7 Cash flow hedges (c) Net unrealized losses arising during the period (2) — (2) Less: Net realized gains reclassified to income from continuing operations 21 (d) (6) (b) 15 Net change (23) 6 (17) Defined benefit pension plans Net unrealized gains arising during the period 2 — 2 Less: Net realized losses reclassified to income from continuing operations (71) (e) (44) (b) (115) Net change 73 44 117 Other comprehensive loss $ (5,197) $ 1,296 $ (3,901) (a) Includes gains reclassified to other gain (loss) on investments, net in our Consolidated Statement of Income. (b) Includes amounts reclassified to income tax expense from continuing operations in our Consolidated Statement of Income. (c) For additional information on derivative instruments and hedging activities, refer to Note 21. (d) Includes gains reclassified to interest and fees on finance receivables and loans in our Consolidated Statement of Income. (e) Includes losses reclassified to compensation and benefits expense in our Consolidated Statement of Income as a result of the settlement of our qualified defined benefit pension plan.

Earnings per Common Share (Tabl

Earnings per Common Share (Tables)	12 Months Ended
	Dec. 31, 2024
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table presents the calculation of basic and diluted earnings per common share. Year ended December 31, ($ in millions, except per share data; shares in thousands) (a) 2024 2023 2022 Net income from continuing operations $ 669 $ 959 $ 1,715 Preferred stock dividends — Series B (63) (63) (63) Preferred stock dividends — Series C (47) (47) (47) Net income from continuing operations attributable to common shareholders $ 559 $ 849 $ 1,605 Loss from discontinued operations, net of tax (1) (2) (1) Net income attributable to common shareholders $ 558 $ 847 $ 1,604 Basic weighted-average common shares outstanding (b) 306,913 303,751 316,690 Diluted weighted-average common shares outstanding (b) 310,160 305,135 318,629 Basic earnings per common share Net income from continuing operations $ 1.82 $ 2.79 $ 5.07 Loss from discontinued operations, net of tax — (0.01) — Net income $ 1.82 $ 2.79 $ 5.06 Diluted earnings per common share Net income from continuing operations $ 1.80 $ 2.78 $ 5.04 Loss from discontinued operations, net of tax — (0.01) — Net income $ 1.80 $ 2.77 $ 5.03 (a) Figures in the table may not recalculate exactly due to rounding. Earnings per share is calculated based on unrounded numbers. (b) Includes shares related to share-based compensation that vested but were not yet issued.

Regulatory Capital and Other _2

Regulatory Capital and Other Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2024
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	The following table summarizes our capital ratios under U.S. Basel III. December 31, 2024 December 31, 2023 (a) Required minimum (b) Well-capitalized minimum ($ in millions) Amount Ratio Amount Ratio Capital ratios Common Equity Tier 1 (to risk-weighted assets) Ally Financial Inc. $ 15,058 9.82 % $ 15,129 9.36 % 4.50 % (c) Ally Bank 17,229 11.94 17,217 11.24 4.50 6.50 % Tier 1 (to risk-weighted assets) Ally Financial Inc. $ 17,324 11.30 % $ 17,392 10.76 % 6.00 % 6.00 % Ally Bank 17,229 11.94 17,217 11.24 6.00 8.00 Total (to risk-weighted assets) Ally Financial Inc. $ 20,182 13.16 % $ 20,055 12.41 % 8.00 % 10.00 % Ally Bank 19,052 13.21 19,144 12.50 8.00 10.00 Tier 1 leverage (to adjusted quarterly average assets) (d) Ally Financial Inc. $ 17,324 8.92 % $ 17,392 8.67 % 4.00 % (c) Ally Bank 17,229 9.40 17,217 9.07 4.00 5.00 % (a) Capital amounts and ratios are based on regulatory filings of Ally and Ally Bank, and have not been adjusted for December 31, 2023, to reflect our change in the method of accounting for ITCs. Refer to Note 1 for additional information about this change in accounting principle. (b) In addition to the minimum risk-based capital requirements for the Common Equity Tier 1 capital, Tier 1 capital, and total capital ratios, Ally was required to maintain a minimum capital conservation buffer of 2.6% and 2.5% at December 31, 2024, and December 31, 2023, respectively, and Ally Bank was required to maintain a minimum capital conservation buffer of 2.5% at both December 31, 2024, and December 31, 2023. In October 2024, Ally’s capital conservation buffer requirement increased to 2.6%, reflecting its updated stress capital buffer requirement. (c) Currently, there is no ratio component for determining whether a BHC is “well-capitalized.” (d) Federal regulatory reporting guidelines require the calculation of adjusted quarterly average assets using a daily average methodology.
Schedule of Common Share Distribution Activity	The following table presents information related to our common stock and distributions to our common shareholders. Common stock repurchased during period (a) (b) Number of common shares outstanding Cash dividends declared per common share (c) ($ in millions, except per share data; shares in thousands) Approximate dollar value Number of shares Beginning of period End of period 2023 First quarter $ 27 836 299,324 300,821 $ 0.30 Second quarter 2 58 300,821 301,619 0.30 Third quarter — 5 301,619 301,630 0.30 Fourth quarter 4 145 301,630 302,459 0.30 2024 First quarter $ 29 781 302,459 303,978 $ 0.30 Second quarter 1 13 303,978 304,656 0.30 Third quarter 1 27 304,656 304,715 0.30 Fourth quarter 7 167 304,715 305,388 0.30 (a) Includes shares of common stock withheld to cover income taxes owed by participants in our share-based incentive plans. (b) Since the commencement of our initial stock-repurchase program in the third quarter of 2016, we have reduced the number of outstanding shares of our common stock by 37%, from 484 million as of June 30, 2016, to 305 million as of December 31, 2024. Except for repurchases made of shares withheld to cover income taxes owed by participants in our share-based incentive plans, we did not make any common-stock repurchases in 2023 or 2024, and at this time, the Board has not authorized a stock-repurchase program for 2025. (c) On January 16, 2025, our Board declared a quarterly cash dividend of $0.30 per share on all common stock. The dividend was paid on February 14, 2025, to shareholders of record at the close of business on January 31, 2025.

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position	The following table summarizes the amounts of derivative instruments reported on our Consolidated Balance Sheet. The amounts are presented on a gross basis, are segregated by derivatives that are designated and qualifying as hedging instruments or those that are not, and are further segregated by type of contract within those two categories. Derivative contracts in a receivable and payable position exclude open trade equity on derivatives cleared through central clearing counterparties. Any associated margin exchanged with our central clearing counterparties are treated as settlements of the derivative exposure, rather than collateral. Such payments are recognized as settlements of the derivatives contracts in a receivable and payable position on our Consolidated Balance Sheet. Notional amounts are reference amounts from which contractual obligations are derived and are not recorded on the balance sheet. In our view, derivative notional is not an accurate measure of our derivative exposure when viewed in isolation from other factors, such as market rate fluctuations and counterparty credit risk. 2024 2023 Derivative contracts in a Notional amount Derivative contracts in a Notional amount December 31, ($ in millions) receivable position payable position receivable position payable position Derivatives designated as accounting hedges Interest rate contracts Swaps $ — $ — $ 33,300 $ — $ — $ 35,835 Purchased options 2 — 6,150 31 — 6,250 Foreign exchange contracts Forwards 8 — 170 — 6 166 Total derivatives designated as accounting hedges 10 — 39,620 31 6 42,251 Derivatives not designated as accounting hedges Interest rate contracts Swaps — — — — — 2,000 Forwards — — 109 — — 70 Written options 1 — 63 2 — 88 Total interest rate risk 1 — 172 2 — 2,158 Foreign exchange contracts Forwards 1 — 47 — 1 59 Total foreign exchange risk 1 — 47 — 1 59 Credit contracts Credit-linked note derivatives — — 669 — — — Other credit derivatives (a) — 4 n/a — 10 n/a Total credit risk — 4 669 — 10 — Total derivatives not designated as accounting hedges 2 4 888 2 11 2,217 Total derivatives $ 12 $ 4 $ 40,508 $ 33 $ 17 $ 44,468 n/a = not applicable (a) The maximum potential amount of undiscounted future payments that could be required under these credit derivatives was $10 million and $29 million as of December 31, 2024, and December 31, 2023, respectively.
Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The following table presents amounts recorded on our Consolidated Balance Sheet related to cumulative basis adjustments for fair value hedges. Carrying amount of the hedged items Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items Total Discontinued (a) December 31, ($ in millions) 2024 2023 2024 2023 2024 2023 Assets Available-for-sale securities (b) $ 15,194 $ 16,302 $ (248) $ (79) $ (132) $ (156) Finance receivables and loans, net (c) 34,493 54,189 (51) (93) (10) (27) Liabilities Long-term debt $ 5,987 $ 7,750 $ 88 $ 100 $ 88 $ 100 (a) Represents the fair value hedging adjustment on qualifying hedges for which the hedging relationship was discontinued. This represents a subset of the amounts reported in the total hedging adjustment. (b) These amounts include the amortized cost basis and unallocated basis adjustments of closed portfolios of available-for-sale securities used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. At December 31, 2024, and December 31, 2023, the amortized cost basis and unallocated basis adjustments of the closed portfolios used in these hedging relationships was $13.9 billion and $14.8 billion, respectively, of which $13.6 billion and $14.6 billion, respectively, represents the amortized cost basis and unallocated basis adjustments of closed portfolios designated in an active hedge relationship. At December 31, 2024, and December 31, 2023, the total cumulative basis adjustments associated with these hedging relationships was a $209 million liability and a $45 million liability, respectively, of which the portion related to discontinued hedging relationships was a $103 million liability and a $120 million liability, respectively. At December 31, 2024, and December 31, 2023, the notional amounts of the designated hedged items were $12.0 billion and $11.3 billion, respectively, with cumulative basis adjustments of a $106 million liability and a $75 million asset, respectively, which would be allocated across the entire remaining closed pool upon termination or maturity of the hedge relationship. Refer to Note 8 for a reconciliation of the amortized cost and fair value of available-for-sale securities. (c) These amounts include the carrying value of closed portfolios of loan receivables used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. At December 31, 2024, and December 31, 2023, the carrying value of the closed portfolios used in these hedging relationships was $34.5 billion and $54.2 billion, respectively, of which $33.4 billion and $50.0 billion, respectively, represents the carrying value of closed portfolios designated in an active hedge relationship. At December 31, 2024, and December 31, 2023, the total cumulative basis adjustments associated with these hedging relationships was a $51 million liability and a $93 million liability, respectively, of which the portion related to discontinued hedging relationships was a $10 million liability and a $27 million liability, respectively. At December 31, 2024, and December 31, 2023, the notional amounts of the designated hedged items were $20.1 billion and $23.2 billion, respectively, with cumulative basis adjustments of a $41 million liability and a $66 million liability, respectively, which would be allocated across the entire remaining closed pool upon termination or maturity of the hedge relationship.
Schedule of Derivative Instruments Not Designated as Accounting Hedge	The following table summarizes the location and amounts of gains and losses on derivative instruments not designated as accounting hedges reported in our Consolidated Statement of Income. Year ended December 31, ($ in millions) 2024 2023 2022 Gain (loss) recognized in earnings Interest rate contracts Gain on mortgage and automotive loans, net $ 20 $ 18 $ 14 Other income, net of losses — (1) 8 Total interest rate contracts 20 17 22 Foreign exchange contracts Other operating expenses 3 — 8 Total foreign exchange contracts 3 — 8 Credit contracts Other income, net of losses 1 (5) (2) Total credit contracts 1 (5) (2) Equity contracts Other income, net of losses 3 (11) — Total equity contracts 3 (11) — Total gain recognized in earnings $ 27 $ 1 $ 28
Schedule of Location and Amounts of Gains and Losses on Derivative Instruments	The following table summarizes the location and amounts of gains and losses on derivative instruments designated as qualifying fair value and cash flow hedges reported in our Consolidated Statement of Income. Interest and fees on finance receivables and loans Interest and dividends on investment securities and other earning assets Interest on long-term debt Year ended December 31, ($ in millions) 2024 2023 2022 2024 2023 2022 2024 2023 2022 Gain (loss) on fair value hedging relationships Interest rate contracts Hedged fixed-rate unsecured debt $ — $ — $ — $ — $ — $ — $ — $ 1 $ 1 Derivatives designated as hedging instruments on fixed-rate unsecured debt — — — — — — — (1) (1) Hedged fixed-rate FHLB advances — — — — — — — — (5) Derivatives designated as hedging instruments on fixed-rate FHLB advances — — — — — — — — 5 Hedged available-for-sale securities — — — (193) 76 (185) — — — Derivatives designated as hedging instruments on available-for-sale securities — — — 193 (76) 185 — — — Hedged fixed-rate consumer automotive loans 25 491 (599) — — — — — — Derivatives designated as hedging instruments on fixed-rate consumer automotive loans (25) (491) 599 — — — — — — Total gain on fair value hedging relationships — — — — — — — — — (Loss) gain on cash flow hedging relationships Interest rate contracts Hedged variable-rate commercial loans Reclassified from accumulated other comprehensive loss into income (12) 14 21 — — — — — — Other hedged forecasted transactions Reclassified from accumulated other comprehensive loss into income — — — — — — — — (1) Total (loss) gain on cash flow hedging relationships $ (12) $ 14 $ 21 $ — $ — $ — $ — $ — $ (1) Total amounts presented in the Consolidated Statement of Income $ 11,394 $ 11,020 $ 8,099 $ 1,037 $ 1,022 $ 841 $ 1,017 $ 1,001 $ 763
Schedule of Location and Amounts of Gains and Losses Related to Interest and Amortization on Derivative Instruments	The following table summarizes the location and amounts of gains and losses related to interest and amortization on derivative instruments designated as qualifying fair value and cash flow hedges reported in our Consolidated Statement of Income. Interest and fees on finance receivables and loans Interest and dividends on investment securities and other earning assets Interest on long-term debt Year ended December 31, ($ in millions) 2024 2023 2022 2024 2023 2022 2024 2023 2022 Gain on fair value hedging relationships Interest rate contracts Amortization of deferred unsecured debt basis adjustments $ — $ — $ — $ — $ — $ — $ 9 $ 9 $ 5 Interest for qualifying accounting hedges of unsecured debt — — — — — — — — 1 Amortization of deferred secured debt basis adjustments (FHLB advances) — — — — — — 2 2 (3) Amortization of deferred basis adjustments of available-for-sale securities — — — 23 23 17 — — — Interest for qualifying accounting hedges of available-for-sale securities — — — 177 134 (1) — — — Amortization of deferred loan basis adjustments 15 32 18 — — — — — — Interest for qualifying accounting hedges of consumer automotive loans held for investment 241 616 129 — — — — — — Total gain on fair value hedging relationships $ 256 $ 648 $ 147 $ 200 $ 157 $ 16 $ 11 $ 11 $ 3
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	The following table summarizes the effect of cash flow hedges on accumulated other comprehensive loss. Year ended December 31, ($ in millions) 2024 2023 2022 Interest rate contracts Loss recognized in other comprehensive (loss) income $ (16) $ (36) $ (23)
Schedule of Net Investment Hedges in Accumulated Other Comprehensive Income (Loss)	The following table summarizes the effect of net investment hedges on accumulated other comprehensive loss. Year ended December 31, ($ in millions) 2024 2023 2022 Foreign exchange contracts (a) (b) Gain (loss) recognized in other comprehensive (loss) income $ 16 $ (3) $ 8 (a) There were no amounts excluded from effectiveness testing for the years ended December 31, 2024, 2023, or 2022. (b) Gains and losses reclassified from accumulated other comprehensive loss are reported as other income, net of losses, in the Consolidated Statement of Income. There were no amounts reclassified for the years ended December 31, 2024, 2023, or 2022.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	The significant components of income tax expense from continuing operations were as follows. Year ended December 31, ($ in millions) 2024 2023 2022 Current income tax expense U.S. federal $ 107 $ 85 $ 1 Foreign 6 5 3 State and local 26 36 9 Total current expense 139 126 13 Deferred income tax expense (benefit) U.S. federal 53 26 493 Foreign 1 (1) (1) State and local (26) (7) 61 Total deferred expense (benefit) 28 18 553 Other tax expense (a) — — 61 Total income tax expense from continuing operations $ 167 $ 144 $ 627 (a) Represents the realization of stranded tax amounts, under the portfolio method, connected to our qualified defined benefit pension plan that was settled during the year ended December 31, 2022. These stranded tax amounts had accumulated in other comprehensive loss over time. Refer to Note 18 for additional information.
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of income tax expense from continuing operations with the amounts at the statutory U.S. federal income tax rate is shown in the following table. Year ended December 31, ($ in millions) 2024 2023 2022 Statutory U.S. federal tax expense $ 175 $ 232 $ 492 Change in tax resulting from Nondeductible expenses 53 44 31 Tax credits, excluding expirations (49) (55) (73) State and local income taxes, net of federal income tax benefit 30 (4) 77 Valuation allowance change, excluding expirations (28) (91) 54 Unrecognized tax benefits (11) 38 (4) Tax law enactment — (18) — Settlement of qualified defined benefit pension plan — — 61 Other, net (3) (2) (11) Total income tax expense from continuing operations $ 167 $ 144 $ 627
Schedule of Deferred Tax Assets and Liabilities	The significant components of deferred tax assets and liabilities are reflected in the following table. December 31, ($ in millions) 2024 2023 Deferred tax assets Adjustments to securities and hedging transactions (a) $ 1,080 $ 1,066 Tax credit carryforwards 679 506 Adjustments to loan value 420 569 State and local taxes 301 305 Fixed assets 257 165 Other 454 426 Gross deferred tax assets 3,191 3,037 Valuation allowance (138) (176) Deferred tax assets, net of valuation allowance 3,053 2,861 Deferred tax liabilities Lease transactions 653 1,117 Deferred acquisition costs 380 387 Long-term debt 62 64 Other 52 57 Gross deferred tax liabilities 1,147 1,625 Net deferred tax assets (b) $ 1,906 $ 1,236 (a) Securities include deferred tax assets related to available-for-sale securities, held-to-maturity securities, and equity securities. At December 31, 2024, and 2023, there were $882 million and $808 million of deferred tax assets related to available-for-sale securities, respectively. (b) Amounts include $1.9 billion and $1.2 billion of net deferred tax assets included in other assets on our Consolidated Balance Sheet for tax jurisdictions in a total net deferred tax asset position, and $10 million included in accrued expenses and other liabilities on our Consolidated Balance Sheet for tax jurisdictions in a total net deferred tax liability position at both December 31, 2024, and 2023.
Schedule of Valuation Allowance	The following table summarizes net deferred tax assets including related valuation allowances at December 31, 2024. ($ in millions) Deferred tax asset Valuation allowance Net deferred tax asset Years of expiration Tax credit carryforwards General business credits $ 611 $ — $ 611 2044 Foreign tax credits 68 (27) 41 2025–2034 Total tax credit carryforwards 679 (27) 652 Tax loss carryforwards Net operating losses — state 128 (a) (111) 17 2025–Indefinite Net operating losses — federal 7 — 7 2028–Indefinite Total U.S. federal and state tax loss carryforwards 135 (111) 24 Other net deferred tax assets 1,230 — 1,230 n/a Net deferred tax assets $ 2,044 $ (138) $ 1,906 n/a = not applicable (a) State net operating loss carryforwards are included in the state and local taxes and other liabilities totals disclosed in our deferred inventory table above.
Schedule of Unrecognized Tax Benefits Roll Forward	The following table provides a reconciliation of the beginning and ending amount of unrecognized tax benefits. ($ in millions) 2024 2023 2022 Balance at January 1, $ 91 $ 46 $ 53 Additions based on tax positions related to the current year — — — Additions for tax positions of prior years 6 48 2 Reductions for tax positions of prior years (20) (2) (2) Settlements — (1) (7) Expiration of statute of limitations — — — Balance at December 31, $ 77 $ 91 $ 46

Share-based Compensation Plans

Share-based Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]
Schedule of Non-Vested PSUs and RSUs Activity	The following table presents the changes in outstanding non-vested PSUs and RSUs activity for share-settled awards during 2024. (in thousands, except per share data) Number of units Weighted-average grant date fair value per share RSUs and PSUs Outstanding non-vested at January 1, 2024 6,695 $ 35.68 Modified awards to settle in cash (a) (56) 40.24 Granted 3,305 37.99 Vested (2,824) 38.13 Forfeited (501) 38.39 Outstanding non-vested at December 31, 2024 6,619 35.55 (a) During 2024, certain non-vested PSUs were modified and reclassified to liability-based awards as we intend to settle them in cash upon vesting.

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2024
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on a Recurring Basis	The following tables display the assets and liabilities measured at fair value on a recurring basis including financial instruments elected for the fair value option. We often economically hedge the fair value change of our assets or liabilities with derivatives. The tables below display the hedges separately from the hedged items; therefore, they do not directly display the impact of our risk-management activities. Recurring fair value measurements December 31, 2024 ($ in millions) Level 1 Level 2 Level 3 Total Assets Investment securities Equity securities (a) (b) $ 820 $ — $ — $ 820 Available-for-sale securities Debt securities U.S. Treasury and federal agencies 1,873 — — 1,873 U.S. States and political subdivisions — 582 35 617 Foreign government 36 158 — 194 Agency mortgage-backed residential — 13,653 — 13,653 Mortgage-backed residential — 206 — 206 Agency mortgage-backed commercial — 3,984 — 3,984 Asset-backed — 129 — 129 Corporate debt — 1,754 — 1,754 Total available-for-sale securities 1,909 20,466 35 22,410 Loans held-for-sale (c) — 11 5 16 Other assets Derivative contracts in a receivable position Interest rate — 2 1 3 Foreign currency — 9 — 9 Total derivative contracts in a receivable position — 11 1 12 Total assets $ 2,729 $ 20,488 $ 41 $ 23,258 Liabilities Accrued expenses and other liabilities Derivative contracts in a payable position Credit $ — $ — $ 4 $ 4 Total derivative contracts in a payable position — — 4 4 Total liabilities $ — $ — $ 4 $ 4 (a) Our direct investment in any one industry did not exceed 14%. The concentration calculation excludes our investment in mutual funds and ETFs. (b) Excludes $51 million of equity securities that are measured at fair value using the net asset value practical expedient and therefore are not classified in the fair value hierarchy. (c) Consumer mortgage loans carried at fair value due to fair value option elections. Recurring fair value measurements December 31, 2023 ($ in millions) Level 1 Level 2 Level 3 Total Assets Investment securities Equity securities (a) (b) $ 765 $ — $ 1 $ 766 Available-for-sale securities Debt securities U.S. Treasury and federal agencies 2,075 — — 2,075 U.S. States and political subdivisions — 649 9 658 Foreign government 51 132 — 183 Agency mortgage-backed residential — 15,384 — 15,384 Mortgage-backed residential — 225 — 225 Agency mortgage-backed commercial — 3,758 — 3,758 Asset-backed — 332 — 332 Corporate debt — 1,800 — 1,800 Total available-for-sale securities 2,126 22,280 9 24,415 Loans held-for-sale (c) — 25 — 25 Other assets Derivative contracts in a receivable position Interest rate — 31 2 33 Total derivative contracts in a receivable position — 31 2 33 Total assets $ 2,891 $ 22,336 $ 12 $ 25,239 Liabilities Accrued expenses and other liabilities Derivative contracts in a payable position Foreign currency $ — $ 7 $ — $ 7 Credit — — 10 10 Total derivative contracts in a payable position — 7 10 17 Total liabilities $ — $ 7 $ 10 $ 17 (a) Our direct investment in any one industry did not exceed 11%. The concentration calculation excludes our investment in mutual funds and ETFs. (b) Excludes $44 million of equity securities that are measured at fair value using the net asset value practical expedient and therefore are not classified in the fair value hierarchy. (c) Consumer mortgage loans carried at fair value due to fair value option elections.
Schedule of Fair Value, Assets Measured on a Recurring Basis, Unobservable Input Reconciliation	The following tables present the reconciliation for all Level 3 assets and liabilities measured at fair value on a recurring basis. We often economically hedge the fair value change of our assets or liabilities with derivatives and other financial instruments. The Level 3 items presented below may be hedged by derivatives and other financial instruments that are classified as Level 1 or Level 2. Thus, the following tables do not fully reflect the impact of our risk-management activities. Equity securities Available-for-sale securities Loans Finance receivables and loans, net (a) ($ in millions) 2024 2023 2024 2023 2024 2023 2024 2023 Assets Fair value at January 1, $ 1 $ 1 $ 9 $ 4 $ — $ — $ — $ 3 Net realized/unrealized gains Included in earnings — — — — — — — — Included in OCI — — — — — — — — Purchases and originations (b) — — 29 5 31 — — — Sales — — — — (26) — — — Issuances — — — — — — — — Settlements — — (3) — — — — (3) Transfers into Level 3 — — — — — — — — Transfers out of Level 3 (1) — — — — — — — Fair value at December 31, $ — $ 1 $ 35 $ 9 $ 5 $ — $ — $ — Net unrealized gains still held at December 31, Included in earnings $ — $ — $ — $ — $ — $ — $ — $ — Included in OCI — — — — — — — — (a) Carried at fair value due to fair value option elections. (b) Includes a $27 million reclassification of a commercial and industrial exposure to an available-for-sale debt security during the year ended December 31, 2024. Derivative liabilities, net of derivative assets (a) ($ in millions) 2024 2023 Liabilities Fair value at January 1, $ 8 $ 39 Net realized/unrealized gains Included in earnings (18) (11) Included in OCI — — Purchases and originations — — Sales — — Issuances — — Settlements (4) (34) Transfers into Level 3 — — Transfers out of Level 3 (b) 17 14 Fair value at December 31, $ 3 $ 8 Net unrealized gains still held at December 31, Included in earnings $ (7) $ (7) Included in OCI — — (a) Net realized/unrealized gains are reported as gain on mortgage and automotive loans, net, and other income, net of losses, in the Consolidated Statement of Income. (b) Represents the settlement value of interest rate derivative assets that are transferred to loans held-for-sale within Level 2 of the fair value hierarchy during the years ended December 31, 2024, and December 31, 2023. These transfers are deemed to have occurred at the end of the reporting period.
Schedule of Fair Value Measurements - Nonrecurring Basis	The following table displays assets and liabilities of our held-for-sale operations measured at fair value on a nonrecurring basis and held at December 31, 2023. The disposal group was sold on March 1, 2024. Refer to Note 24 for descriptions of valuation methodologies used to measure material assets at fair value and details of the valuation models, key inputs to these models, and significant assumptions used. Nonrecurring fair value measurements Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments Total gain (loss) included in earnings December 31, 2023 ($ in millions) Level 1 Level 2 Level 3 Total Assets Loans held-for-sale, net $ — $ 1,940 $ — $ 1,940 $ — n/m (a) Other assets (b) — 35 — 35 (149) n/m (a) Total assets $ — $ 1,975 $ — $ 1,975 $ (149) n/m Liabilities Accrued expenses and other liabilities $ — $ 17 $ — $ 17 $ — n/m (a) Total liabilities $ — $ 17 $ — $ 17 $ — n/m n/m = not meaningful (a) We consider the applicable valuation allowance, allowance for loan losses, or cumulative adjustments to be the most relevant indicator of the impact on earnings caused by the fair value measurement. Accordingly, the table above excludes total gains and losses included in earnings for these items. (b) Includes a $149 million impairment of goodwill at Ally Lending. At the time of impairment, the fair value of goodwill at Ally Lending was classified as Level 2 under the fair value hierarchy. The following tables display assets and liabilities measured at fair value on a nonrecurring basis and still held at December 31, 2024, and December 31, 2023, respectively. The amounts are generally as of the end of each period presented, which approximate the fair value measurements that occurred during each period. These tables exclude assets of operations held-for-sale, refer to Note 2 for additional information. Nonrecurring fair value measurements Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments Total gain (loss) included in earnings December 31, 2024 ($ in millions) Level 1 Level 2 Level 3 Total Assets Loans held-for-sale, net $ — $ — $ 143 $ 143 $ — n/m (a) Commercial finance receivables and loans, net (b) Automotive — — 13 13 (2) n/m (a) Other — — 26 26 (63) n/m (a) Total commercial finance receivables and loans, net — — 39 39 (65) n/m (a) Other assets Goodwill (c) — — 362 362 (118) n/m (a) Repossessed and foreclosed assets (d) — — 8 8 (1) n/m (a) Total assets $ — $ — $ 552 $ 552 $ (184) n/m n/m = not meaningful (a) We consider the applicable valuation allowance, allowance for loan losses, or cumulative adjustments to be the most relevant indicator of the impact on earnings caused by the fair value measurement. Accordingly, the table above excludes total gains and losses included in earnings for these items. The carrying values are inclusive of the respective valuation reserve, loan loss allowance, or cumulative adjustment. (b) Represents collateral-dependent loans held for investment for which a nonrecurring measurement was made. The related allowance for loan losses represents the cumulative fair value adjustments for those specific receivables. (c) As of December 31, 2024, we recognized a $118 million impairment of goodwill at Ally Credit Card. Refer to Note 13 for further discussion. (d) The allowance provided for repossessed and foreclosed assets represents any cumulative valuation adjustment recognized to adjust the assets to fair value. Nonrecurring fair value measurements Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments Total gain (loss) included in earnings December 31, 2023 ($ in millions) Level 1 Level 2 Level 3 Total Assets Loans held-for-sale, net $ — $ — $ 375 $ 375 $ — n/m (a) Commercial finance receivables and loans, net (b) Automotive — — 6 6 — n/m (a) Other — — 49 49 (43) n/m (a) Total commercial finance receivables and loans, net — — 55 55 (43) n/m (a) Other assets Nonmarketable equity investments — — 1 1 1 n/m (a) Repossessed and foreclosed assets (c) — — 10 10 (1) n/m (a) Total assets $ — $ — $ 441 $ 441 $ (43) n/m n/m = not meaningful (a) We consider the applicable valuation allowance, allowance for loan losses, or cumulative adjustments to be the most relevant indicator of the impact on earnings caused by the fair value measurement. Accordingly, the table above excludes total gains and losses included in earnings for these items. The carrying values are inclusive of the respective valuation reserve, loan loss allowance, or cumulative adjustment. (b) Represents collateral-dependent loans held for investment for which a nonrecurring measurement was made. The related allowance for loan losses represents the cumulative fair value adjustments for those specific receivables. (c) The allowance provided for repossessed and foreclosed assets represents any cumulative valuation adjustment recognized to adjust the assets to fair value.
Schedule of Fair Value, by Balance Sheet Grouping	The following table presents the carrying and estimated fair value of financial instruments, except for those recorded at fair value on a recurring basis presented in the previous section of this note titled Recurring Fair Value. This table excludes assets of operations held-for-sale, refer to Note 2 for additional information. When possible, we use quoted market prices to determine fair value. Where quoted market prices are not available, the fair value is internally derived based on appropriate valuation methodologies with respect to the amount and timing of future cash flows and estimated discount rates. However, considerable judgment is required in interpreting current market data to develop the market assumptions and inputs necessary to estimate fair value. As such, the actual amount received to sell an asset or the amount paid to settle a liability could differ from our estimates. Fair value information presented herein was based on information available at December 31, 2024, and December 31, 2023. Estimated fair value ($ in millions) Carrying value Level 1 Level 2 Level 3 Total December 31, 2024 Financial assets Held-to-maturity securities $ 4,346 $ — $ 4,293 $ — $ 4,293 Loans held-for-sale, net 144 — — 144 144 Finance receivables and loans, net 132,316 — — 134,603 134,603 FHLB/FRB stock (a) 698 — 698 — 698 Financial liabilities Deposit liabilities $ 47,242 $ — $ — $ 47,403 $ 47,403 Short-term borrowings 1,625 — — 1,625 1,625 Long-term debt 17,495 — 13,535 4,982 18,517 December 31, 2023 Financial assets Held-to-maturity securities $ 4,680 $ — $ 4,729 $ — $ 4,729 Loans held-for-sale, net 375 — — 375 375 Finance receivables and loans, net 135,852 — — 137,244 137,244 FHLB/FRB stock (a) 784 — 784 — 784 Financial liabilities Deposit liabilities $ 55,187 $ — $ — $ 55,311 $ 55,311 Short-term borrowings 3,297 — — 3,335 3,335 Long-term debt 17,570 — 12,789 5,749 18,538 (a) Included in other assets on our Consolidated Balance Sheet.

Offsetting Assets and Liabili_2

Offsetting Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2024
Offsetting [Abstract]
Schedule of Offsetting Assets	The composition of offsetting derivative instruments, financial assets, and financial liabilities was as follows. Gross amounts of recognized assets/liabilities Gross amounts offset on the Consolidated Balance Sheet Net amounts of assets/liabilities presented on the Consolidated Balance Sheet Gross amounts not offset on the Consolidated Balance Sheet December 31, ($ in millions) Financial instruments Collateral (a) (b) (c) Net amount 2024 Assets Derivative assets (d) $ 12 $ — $ 12 $ — $ (10) $ 2 Total assets $ 12 $ — $ 12 $ — $ (10) $ 2 Liabilities Derivative liabilities (e) $ 4 $ — $ 4 $ — $ — $ 4 Total liabilities $ 4 $ — $ 4 $ — $ — $ 4 2023 Assets Derivative assets (d) $ 33 $ — $ 33 $ — $ (31) $ 2 Total assets $ 33 $ — $ 33 $ — $ (31) $ 2 Liabilities Derivative liabilities (e) $ 17 $ — $ 17 $ — $ (6) $ 11 Securities sold under agreements to repurchase (f) 747 — 747 — (747) — Total liabilities $ 764 $ — $ 764 $ — $ (753) $ 11 (a) Financial collateral received or pledged shown as a balance based on the sum of all net asset and liability positions between Ally and each individual derivative counterparty. (b) Amounts disclosed are limited to the financial asset or liability balance and, accordingly, exclude excess collateral received or pledged and noncash collateral received. We do not record noncash collateral received on our Consolidated Balance Sheet unless certain conditions are met. (c) Certain agreements grant us the right to sell or pledge the noncash assets we receive as collateral. We have not sold or pledged any of the noncash collateral received under these agreements. (d) Includes derivative assets with no offsetting arrangements of $1 million and $2 million as of December 31, 2024, and December 31, 2023, respectively. (e) Includes derivative liabilities with no offsetting arrangements of $4 million and $10 million as of December 31, 2024, and December 31, 2023, respectively. (f) For additional information on securities sold under agreements to repurchase, refer to Note 15.
Schedule of Offsetting Liabilities	The composition of offsetting derivative instruments, financial assets, and financial liabilities was as follows. Gross amounts of recognized assets/liabilities Gross amounts offset on the Consolidated Balance Sheet Net amounts of assets/liabilities presented on the Consolidated Balance Sheet Gross amounts not offset on the Consolidated Balance Sheet December 31, ($ in millions) Financial instruments Collateral (a) (b) (c) Net amount 2024 Assets Derivative assets (d) $ 12 $ — $ 12 $ — $ (10) $ 2 Total assets $ 12 $ — $ 12 $ — $ (10) $ 2 Liabilities Derivative liabilities (e) $ 4 $ — $ 4 $ — $ — $ 4 Total liabilities $ 4 $ — $ 4 $ — $ — $ 4 2023 Assets Derivative assets (d) $ 33 $ — $ 33 $ — $ (31) $ 2 Total assets $ 33 $ — $ 33 $ — $ (31) $ 2 Liabilities Derivative liabilities (e) $ 17 $ — $ 17 $ — $ (6) $ 11 Securities sold under agreements to repurchase (f) 747 — 747 — (747) — Total liabilities $ 764 $ — $ 764 $ — $ (753) $ 11 (a) Financial collateral received or pledged shown as a balance based on the sum of all net asset and liability positions between Ally and each individual derivative counterparty. (b) Amounts disclosed are limited to the financial asset or liability balance and, accordingly, exclude excess collateral received or pledged and noncash collateral received. We do not record noncash collateral received on our Consolidated Balance Sheet unless certain conditions are met. (c) Certain agreements grant us the right to sell or pledge the noncash assets we receive as collateral. We have not sold or pledged any of the noncash collateral received under these agreements. (d) Includes derivative assets with no offsetting arrangements of $1 million and $2 million as of December 31, 2024, and December 31, 2023, respectively. (e) Includes derivative liabilities with no offsetting arrangements of $4 million and $10 million as of December 31, 2024, and December 31, 2023, respectively. (f) For additional information on securities sold under agreements to repurchase, refer to Note 15.

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2024
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Financial information for our reportable operating segments is summarized as follows. Year ended December 31, 2024 ($ in millions) Automotive Finance operations Insurance operations Corporate Finance operations Corporate and Other Consolidated (a) Net financing revenue and other interest income Total financing revenue and other interest income $ 10,473 $ 168 $ 1,006 $ 2,575 $ 14,222 Total interest expense 4,266 54 550 2,602 7,472 Net depreciation expense on operating lease assets 736 — — — 736 Net financing revenue and other interest income 5,471 114 456 (27) 6,014 Other revenue 363 1,507 123 174 2,167 Total net revenue 5,834 1,621 579 147 8,181 Provision for credit losses 1,905 — 8 253 2,166 Noninterest expense Compensation and benefits expense 668 108 80 986 1,842 Insurance losses and loss adjustment expenses — 544 — — 544 Goodwill impairment (b) — — — 118 118 Other operating expenses Technology and communications expenses 129 19 5 285 438 Other (c) 1,316 782 52 87 2,237 Total other operating expenses 1,445 801 57 372 2,675 Total noninterest expense 2,113 1,453 137 1,476 5,179 Income (loss) from continuing operations before income tax expense $ 1,816 $ 168 $ 434 $ (1,582) $ 836 Total assets $ 113,057 $ 9,325 $ 9,704 $ 59,750 $ 191,836 (a) Net financing revenue and other interest income after the provision for credit losses totaled $3.8 billion for the year ended December 31, 2024. (b) Impairment of goodwill related to Ally Credit Card for the year ended December 31, 2024. Refer to Note 13 for additional information. (c) Primarily consists of insurance commissions, advertising and marketing, and property and equipment depreciation expenses. Refer to Note 7 for additional information. Year ended December 31, 2023 ($ in millions) Automotive Finance operations Insurance operations Corporate Finance operations Corporate and Other Consolidated (a) Net financing revenue and other interest income Total financing revenue and other interest income $ 9,721 $ 149 $ 980 $ 3,108 $ 13,958 Total interest expense 3,364 45 550 2,938 6,897 Net depreciation expense on operating lease assets 840 — — — 840 Net financing revenue and other interest income 5,517 104 430 170 6,221 Other revenue 321 1,428 104 160 2,013 Total net revenue 5,838 1,532 534 330 8,234 Provision for credit losses 1,618 — 52 298 1,968 Noninterest expense Compensation and benefits expense 668 108 78 1,047 1,901 Insurance losses and loss adjustment expenses — 422 — — 422 Goodwill impairment (b) — — — 149 149 Other operating expenses Technology and communications expenses 126 18 5 287 436 Other (c) 1,212 768 45 230 2,255 Total other operating expenses 1,338 786 50 517 2,691 Total noninterest expense 2,006 1,316 128 1,713 5,163 Income (loss) from continuing operations before income tax expense $ 2,214 $ 216 $ 354 $ (1,681) $ 1,103 Total assets $ 115,301 $ 9,081 $ 11,212 $ 60,735 $ 196,329 (a) Net financing revenue and other interest income after the provision for credit losses totaled $4.3 billion for the year ended December 31, 2023. (b) Impairment of goodwill related to Ally Lending for the year ended December 31, 2023. Refer to Note 13 for additional information. (c) Primarily consists of insurance commissions expense, advertising and marketing expense, and lease and loan administration expense. Refer to Note 7 for additional information. Year ended December 31, 2022 ($ in millions) Automotive Finance operations Insurance operations Corporate Finance operations Corporate and Other Consolidated (a) Net financing revenue and other interest income Total financing revenue and other interest income $ 7,990 $ 126 $ 546 $ 1,959 $ 10,621 Total interest expense 1,838 42 206 771 2,857 Net depreciation expense on operating lease assets 914 — — — 914 Net financing revenue and other interest income 5,238 84 340 1,188 6,850 Other revenue 306 1,023 122 127 1,578 Total net revenue 5,544 1,107 462 1,315 8,428 Provision for credit losses 1,036 — 43 320 1,399 Noninterest expense Compensation and benefits expense 629 101 75 1,095 1,900 Insurance losses and loss adjustment expenses — 280 — — 280 Other operating expenses Technology and communications expenses 117 17 4 268 406 Other (b) 1,104 735 46 216 2,101 Total other operating expenses 1,221 752 50 484 2,507 Total noninterest expense 1,850 1,133 125 1,579 4,687 Income (loss) from continuing operations before income tax expense $ 2,658 $ (26) $ 294 $ (584) $ 2,342 Total assets $ 111,463 $ 8,659 $ 10,544 $ 61,160 $ 191,826 (a) Net financing revenue and other interest income after the provision for credit losses totaled $5.5 billion for the year ended December 31, 2022. (b) Primarily consists of insurance commissions expense, advertising and marketing expense, and lease and loan administration expense. Refer to Note 7 for additional information.

Parent Company Condensed Fina_2

Parent Company Condensed Financial Information (Tables) - Parent company	12 Months Ended
	Dec. 31, 2024
Entity Listings [Line Items]
Schedule of Condensed Statement of Comprehensive Income (Loss)	Condensed Statement of Comprehensive Income (Loss) Year ended December 31, ($ in millions) 2024 2023 2022 Net financing loss and other interest income (a) $ (884) $ (945) $ (1,000) Dividends from bank subsidiaries 1,200 1,350 3,150 Dividends from nonbank subsidiaries — 250 1 Total other revenue 134 169 103 Total net revenue 450 824 2,254 Provision for credit losses 8 (14) (32) Total noninterest expense 473 466 665 (Loss) income from continuing operations before income tax benefit and undistributed (loss) income of subsidiaries (31) 372 1,621 Income tax benefit from continuing operations (b) (327) (408) (253) Net income from continuing operations 296 780 1,874 Loss from discontinued operations, net of tax (1) (2) (1) Equity in undistributed earnings of subsidiaries 373 179 (159) Net income 668 957 1,714 Other comprehensive (loss) income, net of tax (108) 243 (3,901) Comprehensive income (loss) $ 560 $ 1,200 $ (2,187) (a) Net financing loss and other interest income is primarily driven by interest expense on long-term debt. (b) There is a significant variation in the customary relationship between pretax income and income tax benefit due to our accounting policy elections and consolidated tax adjustments. The income tax benefit excludes tax effects on dividends from subsidiaries.
Schedule of Condensed Balance Sheet	Condensed Balance Sheet December 31, ($ in millions) 2024 2023 Assets Cash and cash equivalents (a) $ 4,579 $ 3,911 Equity securities 1 16 Finance receivables and loans, net of unearned income 810 1,478 Allowance for loan losses 10 22 Total finance receivables and loans, net 820 1,500 Investments in subsidiaries Bank subsidiaries 13,777 13,629 Nonbank subsidiaries 5,335 4,503 Intercompany receivables from subsidiaries 251 263 Investment in operating leases, net 10 16 Other assets 1,774 1,536 Total assets $ 26,547 $ 25,374 Liabilities and equity Long-term debt (b) $ 11,068 $ 10,427 Interest payable 134 98 Intercompany debt to subsidiaries 1,046 772 Intercompany payables to subsidiaries 39 41 Accrued expenses and other liabilities 357 333 Total liabilities 12,644 11,671 Total equity 13,903 13,703 Total liabilities and equity $ 26,547 $ 25,374 (a) Includes $4.5 billion and $3.9 billion deposited by the Parent at Ally Bank as of December 31, 2024, and 2023, respectively. These funds are available to the Parent for liquidity purposes. (b) Includes $2.0 billion of the outstanding principal balance of senior notes fully and unconditionally guaranteed by subsidiaries of the Parent as of both December 31, 2024, and 2023.
Schedule of Condensed Statement of Cash Flows	Condensed Statement of Cash Flows Year ended December 31, ($ in millions) 2024 2023 2022 Operating activities Net cash provided by operating activities $ 511 $ 879 $ 1,733 Investing activities Proceeds from sales of finance receivables and loans initially held-for-investment 6 1 64 Originations and repayments of finance receivables and loans held-for-investment and other, net (89) (37) (7) Net change in loans — intercompany (51) (290) (65) Proceeds from sales of equity securities — 5 1 Capital contributions to subsidiaries (4) (8) — Returns of contributed capital — 1 52 Net change in nonmarketable equity investments — (2) 8 Other, net (27) (10) (27) Net cash (used in) provided by investing activities (165) (340) 26 Financing activities Proceeds from issuance of long-term debt 2,050 2,410 1,655 Repayments of long-term debt (1,482) (2,087) (1,088) Net change in debt — intercompany 274 227 (496) Repurchase of common stock (38) (33) (1,650) Common stock dividends paid (372) (368) (384) Preferred stock dividends paid (110) (110) (110) Net cash provided by (used in) financing activities 322 39 (2,073) Net increase (decrease) in cash and cash equivalents and restricted cash 668 578 (314) Cash and cash equivalents and restricted cash at beginning of year 3,944 3,366 3,680 Cash and cash equivalents and restricted cash at end of year $ 4,612 $ 3,944 $ 3,366 The following table provides a reconciliation of cash and cash equivalents and restricted cash from the Condensed Balance Sheet to the Condensed Statement of Cash Flows. Year ended December 31, ($ in millions) 2024 2023 Cash and cash equivalents on the Condensed Balance Sheet $ 4,579 $ 3,911 Restricted cash included in other assets on the Condensed Balance Sheet (a) 33 33 Total cash and cash equivalents and restricted cash in the Condensed Statement of Cash Flows $ 4,612 $ 3,944 (a) Restricted cash balances relate primarily to Ally securitization arrangements. Refer to Note 13 for additional details describing the nature of restricted cash balances.

Guarantees and Commitments (Tab

Guarantees and Commitments (Tables)	12 Months Ended
	Dec. 31, 2024
Guarantees and Product Warranties [Abstract]
Schedule of Guarantor Obligations	Guarantees are defined as contracts or indemnification agreements that contingently require us to make payments to third-parties based on changes in the underlying agreements with the guaranteed parties. The following summarizes our outstanding guarantees, including those of our discontinued operations, made to third-parties on our Consolidated Balance Sheet, for the periods shown. 2024 2023 December 31, ($ in millions) Maximum liability Carrying value of liability Maximum liability Carrying value of liability Standby letters of credit and other guarantees $ 267 $ — $ 259 $ —
Schedule of Financing Commitments	The contractual commitments were as follows. December 31, ($ in millions) 2024 2023 Unused revolving credit line commitments and other (a) (b) $ 10,027 $ 10,658 Commitments to provide capital to investees (c) 1,227 1,191 Construction-lending commitments (d) 166 168 Home equity lines of credit (e) 116 134 Mortgage loan origination commitments (f) — 29 (a) The unused portion of revolving lines of credit reset at prevailing market rates and, approximate fair value. (b) The amount for December 31, 2023, includes $68 million of financing commitments related to Ally Lending, which was classified as operations held-for-sale. We closed the sale of Ally Lending on March 1, 2024. Refer to Note 2 for additional information. (c) We are committed to contribute capital to certain investees. (d) We are committed to fund the remaining unused balance while loans are in the construction period. (e) We are committed to fund the remaining unused balances on home equity lines of credit. (f) Commitments with mortgage loan applicants in which the loan terms, including interest rate and price, are guaranteed for a designated period of time subject to the completion of underwriting procedures. During 2024, we shifted to prioritize held-for-sale loan originations in our mortgage operations.
Schedule of Contractual Commitments	We have entered into multiple agreements for sponsorship, information technology, voice and communication technology, and related maintenance. Many of the agreements are subject to variable price provisions, fixed or minimum price provisions, and termination or renewal provisions. The following table presents our total future payment obligations expiring after December 31, 2024. Year ended December 31, ($ in millions) 2025 $ 255 2026 198 2027 91 2028 42 2029 3 Total future payment obligations $ 589

Selected Quarterly Financial _2

Selected Quarterly Financial Data (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2024
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information	The following tables summarize the effects of the change in accounting method for select quarterly financial data. December 31, 2024 (a) September 30, 2024 June 30, 2024 March 31, 2024 Three months ended ($ in millions, except per share data) As Reported As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted Consolidated Statement of Income Net depreciation expense on operating lease assets $ 220 $ 201 $ 169 $ 177 $ 155 $ 204 $ 192 Income tax (benefit) expense from continuing operations — (124) 67 (37) 60 14 40 Net income 108 357 198 294 219 157 143 Basic earnings per common share (b) Net income $ 0.26 $ 1.07 $ 0.55 $ 0.87 $ 0.63 $ 0.42 $ 0.38 Diluted earnings per common share (b) Net income $ 0.26 $ 1.06 $ 0.55 $ 0.86 $ 0.62 $ 0.42 $ 0.37 Consolidated Statement of Comprehensive Income (Loss) Comprehensive (loss) income $ (423) $ 973 $ 814 $ 274 $ 199 $ (16) $ (30) (a) During the fourth quarter of 2024, we elected to change our method of accounting for ITCs from the flow-through method to the deferral method, therefore no adjustments are necessary for the three months ended December 31, 2024. (b) Earnings per share is calculated based on unrounded numbers. December 31, 2023 September 30, 2023 June 30, 2023 March 31, 2023 Three months ended ($ in millions, except per share data) As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted Consolidated Statement of Income Net depreciation expense on operating lease assets $ 222 $ 213 $ 212 $ 206 $ 200 $ 196 $ 226 $ 225 Income tax (benefit) expense from continuing operations (13) 10 (68) (51) 74 96 68 89 Net income 76 62 296 285 329 311 319 299 Basic earnings per common share (a) Net income $ 0.16 $ 0.11 $ 0.88 $ 0.85 $ 0.99 $ 0.93 $ 0.96 $ 0.90 Diluted earnings per common share (a) Net income $ 0.16 $ 0.11 $ 0.88 $ 0.84 $ 0.99 $ 0.93 $ 0.96 $ 0.89 Consolidated Statement of Comprehensive Income (Loss) Comprehensive income (loss) $ 1,025 $ 1,011 $ (606) $ (617) $ 242 $ 224 $ 602 $ 582 (a) Earnings per share is calculated based on unrounded numbers. December 31, 2024 (a) September 30, 2024 June 30, 2024 March 31, 2024 ($ in millions) As Reported As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted Consolidated Balance Sheet Investment in operating leases, net $ 7,991 $ 8,318 $ 7,967 $ 8,374 $ 8,126 $ 8,731 $ 8,582 Other assets 10,660 9,907 9,947 9,853 9,949 9,348 9,420 Retained earnings $ 270 $ 595 $ 284 $ 360 $ 208 $ 188 $ 111 (a) During the fourth quarter of 2024, we elected to change our method of accounting for ITCs from the flow-through method to the deferral method, therefore no adjustments are necessary for December 31, 2024. December 31, 2023 September 30, 2023 June 30, 2023 March 31, 2023 ($ in millions) As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted Consolidated Balance Sheet Investment in operating leases, net $ 9,171 $ 9,085 $ 9,569 $ 9,509 $ 9,930 $ 9,890 $ 10,236 $ 10,218 Other assets 9,395 9,418 9,601 9,612 9,153 9,155 9,144 9,142 Retained earnings (accumulated deficit) $ 154 $ 91 $ 197 $ 148 $ 23 $ (15) $ (185) $ (205) Year ended Nine months ended Six months ended Three months ended ($ in millions) As Reported As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted Consolidated Statement of Cash Flows 2024 Operating activities Net income $ 668 $ 808 $ 560 $ 451 $ 362 $ 157 $ 143 Reconciliation of net income to net cash provided by operating activities Depreciation and amortization 1,199 930 864 616 582 322 310 Net change in Deferred income taxes (436) (201) (218) (44) (117) (1) (50) Net cash provided by operating activities 4,528 3,908 3,577 2,916 2,720 1,341 1,266 Investing Activities Disposals of operating lease assets 3,808 2,782 3,113 1,968 2,164 889 964 Net cash provided by investing activities $ 4,991 $ 3,454 $ 3,785 $ 2,394 $ 2,590 $ 3,501 $ 3,576 (a) During the fourth quarter of 2024, we elected to change our method of accounting for ITCs from the flow-through method to the deferral method, therefore no adjustments are necessary for the year ended December 31, 2024. Year ended Nine months ended Six months ended Three months ended ($ in millions) As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted As Originally Reported As Adjusted Consolidated Statement of Cash Flows 2023 Operating activities Net income $ 1,020 $ 957 $ 944 $ 895 $ 648 $ 610 $ 319 $ 299 Reconciliation of net income to net cash provided by operating activities Depreciation and amortization 1,247 1,227 923 912 613 608 317 316 Net change in Deferred income taxes (58) (81) (62) (73) 53 51 24 26 Net cash provided by operating activities 4,663 4,557 4,680 4,609 3,020 2,975 1,432 1,413 Investing Activities Disposals of operating lease assets 3,122 3,228 2,384 2,455 1,580 1,625 706 725 Net cash used in investing activities $ (7,288) $ (7,182) $ (4,215) $ (4,144) $ (2,480) $ (2,435) $ (382) $ (363)

Description of Business, Basi_4

Description of Business, Basis of Presentation, and Significant Accounting Policies - Narrative (Details)		3 Months Ended	12 Months Ended
	Mar. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($) segment	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2024 USD ($)	Jan. 01, 2024 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of loan portfolio segments | segment			4
Financing receivable, allowance for credit loss, excluding accrued interest, forecast period	12 months	24 months
Financing receivable, allowance for credit loss, excluding accrued interest, reversion period	24 months	12 months
Operating lease impairment loss			$ 0	$ 0	$ 0
Impairment, long-lived assets			0	0	$ 0
Reduction to opening retained earnings	$ (111,000,000)	$ (208,000,000)	$ (270,000,000)	$ (91,000,000)		$ (284,000,000)		$ (148,000,000)	$ 15,000,000	$ 205,000,000
Adjustments | Accounting Standards Update 2023-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reduction to opening retained earnings							$ 2,000,000
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Useful life			3 years
Minimum | Capitalized software
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Useful life			3 years
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Useful life			30 years
Maximum | Capitalized software
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Useful life			5 years

Description of Business, Basi_5

Description of Business, Basis of Presentation, and Significant Accounting Policies - Consolidated Statement of Income (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
		Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2024		Dec. 31, 2023		Dec. 31, 2022
Financing revenue and other interest income
Net depreciation expense on operating lease assets		$ 220	$ 169	$ 155	$ 192	$ 213	$ 206	$ 196	$ 225					$ 736		$ 840		$ 914
Income tax expense from continuing operations		0	67	60	40	10	(51)	96	89					167		144		627
Net income		$ 108	$ 198	$ 219	$ 143	$ 62	$ 285	$ 311	$ 299	$ 362	$ 610	$ 560	$ 895	668		957		1,714
Net income attributable to common shareholders	[1]													$ 558		$ 847		$ 1,604
Basic earnings per common share
Net income (in dollars per share)		$ 0.26	$ 0.55	$ 0.63	$ 0.38	$ 0.11	$ 0.85	$ 0.93	$ 0.90					$ 1.82	[1]	$ 2.79	[1]	$ 5.06	[1]
Diluted earnings per common share
Net income (in dollars per share)		$ 0.26	$ 0.55	$ 0.62	$ 0.37	$ 0.11	$ 0.84	$ 0.93	$ 0.89					$ 1.80	[1]	$ 2.77	[1]	$ 5.03	[1]
Comprehensive income (loss)		$ (423)	$ 814	$ 199	$ (30)	$ 1,011	$ (617)	$ 224	$ 582					$ 560		$ 1,200		$ (2,187)
As Originally Reported
Financing revenue and other interest income
Net depreciation expense on operating lease assets			201	177	204	222	212	200	226							860
Income tax expense from continuing operations			(124)	(37)	14	(13)	(68)	74	68							61
Net income			$ 357	$ 294	$ 157	$ 76	$ 296	$ 329	$ 319	$ 451	$ 648	$ 808	$ 944			1,020
Net income attributable to common shareholders																$ 910
Basic earnings per common share
Net income (in dollars per share)			$ 1.07	$ 0.87	$ 0.42	$ 0.16	$ 0.88	$ 0.99	$ 0.96							$ 3
Diluted earnings per common share
Net income (in dollars per share)			$ 1.06	$ 0.86	$ 0.42	$ 0.16	$ 0.88	$ 0.99	$ 0.96							$ 2.98
Comprehensive income (loss)			$ 973	$ 274	$ (16)	$ 1,025	$ (606)	$ 242	$ 602							$ 1,263
Adjustments
Financing revenue and other interest income
Net depreciation expense on operating lease assets																(20)
Income tax expense from continuing operations																83
Net income																(63)
Net income attributable to common shareholders																$ (63)
Basic earnings per common share
Net income (in dollars per share)																$ (0.21)
Diluted earnings per common share
Net income (in dollars per share)																$ (0.21)
Comprehensive income (loss)																$ (63)
[1] Figures in the table may not recalculate exactly due to rounding. Earnings per share is calculated based on unrounded numbers.

Description of Business, Basi_6

Description of Business, Basis of Presentation, and Significant Accounting Policies - Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Investment in operating leases, net	$ 7,991	$ 7,967	$ 8,126	$ 8,582	$ 9,085	$ 9,509	$ 9,890	$ 10,218
Other assets	10,660	9,947	9,949	9,420	9,418	9,612	9,155	9,142
Retained earnings	$ 270	284	208	111	91	148	(15)	(205)
As Originally Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Investment in operating leases, net		8,318	8,374	8,731	9,171	9,569	9,930	10,236
Other assets		9,907	9,853	9,348	9,395	9,601	9,153	9,144
Retained earnings		$ 595	$ 360	$ 188	154	$ 197	$ 23	$ (185)
Adjustments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Investment in operating leases, net					(86)
Other assets					23
Retained earnings					$ (63)

Description of Business, Basi_7

Description of Business, Basis of Presentation, and Significant Accounting Policies - Consolidated Statement of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating activities
Net income	$ 108	$ 198	$ 219	$ 143	$ 62	$ 285	$ 311	$ 299	$ 362	$ 610	$ 560	$ 895	$ 668	$ 957	$ 1,714
Reconciliation of net income to net cash provided by operating activities
Depreciation and amortization				310				316	582	608	864	912	1,199	1,227	1,327
Net change in
Deferred income taxes				50				(26)	117	(51)	218	73	436	81	(553)
Net cash provided by operating activities				1,266				1,413	2,720	2,975	3,577	4,609	4,528	4,557	6,247
Investing activities
Disposals of operating lease assets				964				725	2,164	1,625	3,113	2,455	3,808	3,228	3,023
Net cash provided by (used in) investing activities				3,576				(363)	2,590	(2,435)	3,785	(4,144)	$ 4,991	(7,182)	$ (17,263)
As Originally Reported
Operating activities
Net income		$ 357	$ 294	157	$ 76	$ 296	$ 329	319	451	648	808	944		1,020
Reconciliation of net income to net cash provided by operating activities
Depreciation and amortization				322				317	616	613	930	923		1,247
Net change in
Deferred income taxes				1				(24)	44	(53)	201	62		58
Net cash provided by operating activities				1,341				1,432	2,916	3,020	3,908	4,680		4,663
Investing activities
Disposals of operating lease assets				889				706	1,968	1,580	2,782	2,384		3,122
Net cash provided by (used in) investing activities				$ 3,501				$ (382)	$ 2,394	$ (2,480)	$ 3,454	$ (4,215)		(7,288)
Adjustments
Operating activities
Net income														(63)
Reconciliation of net income to net cash provided by operating activities
Depreciation and amortization														(20)
Net change in
Deferred income taxes														23
Net cash provided by operating activities														(106)
Investing activities
Disposals of operating lease assets														106
Net cash provided by (used in) investing activities														$ 106

Held-for-sale Operations - Narr

Held-for-sale Operations - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Provision for credit losses	$ 2,166	$ 1,979
Goodwill impairment	118	149	$ 0
Corporate and Other
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill impairment	118	149
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Ally Lending
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Provision for credit losses		16
Net pretax loss		133
Additional pretax loss	$ 8
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Ally Lending | Corporate and Other
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill impairment		$ 149

Held-for-sale Operations - Sche

Held-for-sale Operations - Schedule of Assets and Liabilities of Operations Held-for-Sale (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Assets
Total assets	$ 0	$ 1,975
Liabilities
Total liabilities	$ 0	17
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Ally Lending
Assets
Loans held-for-sale, net		1,940
Other assets		35
Total assets		1,975
Liabilities
Accrued expenses and other liabilities		17
Total liabilities		17
Accrued interest and fees		25
Goodwill		4
Property, plant and equipment		4
Unfunded lending commitments		$ 5

Held-for-sale Operations - Sc_2

Held-for-sale Operations - Schedule of Fair Value Measurements - Nonrecurring Basis (Details) - USD ($) $ in Millions		12 Months Ended
	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Assets
Total assets	$ 0	$ 0	$ 1,975
Liabilities
Total liabilities	0	0	17
Goodwill impairment		118	149	$ 0
Corporate and Other
Liabilities
Goodwill impairment		118	149
Nonrecurring fair value measurements
Liabilities
Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments	0	$ 0	0
Goodwill impairment	$ 118
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Ally Lending
Assets
Loans held-for-sale, net			1,940
Other assets			35
Total assets			1,975
Liabilities
Accrued expenses and other liabilities			17
Total liabilities			17
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Ally Lending | Corporate and Other
Liabilities
Goodwill impairment			149
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Nonrecurring fair value measurements | Ally Lending
Assets
Loans held-for-sale, net			1,940
Other assets			35
Total assets			1,975
Liabilities
Accrued expenses and other liabilities			17
Total liabilities			17
Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments			(149)
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Level 1 | Nonrecurring fair value measurements | Ally Lending
Assets
Loans held-for-sale, net			0
Other assets			0
Total assets			0
Liabilities
Accrued expenses and other liabilities			0
Total liabilities			0
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Level 2 | Nonrecurring fair value measurements | Ally Lending
Assets
Loans held-for-sale, net			1,940
Other assets			35
Total assets			1,975
Liabilities
Accrued expenses and other liabilities			17
Total liabilities			17
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Level 3 | Nonrecurring fair value measurements | Ally Lending
Assets
Loans held-for-sale, net			0
Other assets			0
Total assets			0
Liabilities
Accrued expenses and other liabilities			0
Total liabilities			$ 0

Revenue from Contracts with C_3

Revenue from Contracts with Customers (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 1,198	$ 968	$ 908
All other revenue	969	1,045	670
Total other revenue	2,167	2,013	1,578
Remarketing gains, net	132	211	170
Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	135	133	112
All other revenue	39	27	15
Total other revenue	174	160	127
Automotive Finance operations
Disaggregation of Revenue [Line Items]
Remarketing gains, net	132	211	170
Automotive Finance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	131	135	127
All other revenue	232	186	179
Total other revenue	363	321	306
Insurance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	932	700	669
All other revenue	575	728	354
Total other revenue	1,507	1,428	1,023
Corporate Finance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
All other revenue	123	104	122
Total other revenue	123	104	122
Noninsurance contracts
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	909	686	655
Noninsurance contracts | Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Noninsurance contracts | Automotive Finance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Noninsurance contracts | Insurance operations
Disaggregation of Revenue [Line Items]
Unearned revenue, remaining performance obligation, amount	3,000	3,000	3,000	$ 3,100
Unearned revenue, revenue recognized	973	973	939
Capitalized contract cost, net	1,800	1,800	1,800
Capitalized contract cost, amortization	577	580	564
Noninsurance contracts | Insurance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	909	686	655
Noninsurance contracts | Insurance operations | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Disaggregation of Revenue [Line Items]
Unearned revenue, remaining performance obligation, amount	$ 849
Remaining performance obligation, expected timing of satisfaction, period	1 year
Noninsurance contracts | Insurance operations | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Disaggregation of Revenue [Line Items]
Unearned revenue, remaining performance obligation, amount	$ 706
Remaining performance obligation, expected timing of satisfaction, period	1 year
Noninsurance contracts | Insurance operations | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Disaggregation of Revenue [Line Items]
Unearned revenue, remaining performance obligation, amount	$ 555
Remaining performance obligation, expected timing of satisfaction, period	1 year
Noninsurance contracts | Insurance operations | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Disaggregation of Revenue [Line Items]
Unearned revenue, remaining performance obligation, amount	$ 394
Remaining performance obligation, expected timing of satisfaction, period	1 year
Noninsurance contracts | Insurance operations | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Disaggregation of Revenue [Line Items]
Unearned revenue, remaining performance obligation, amount	$ 452
Remaining performance obligation, expected timing of satisfaction, period
Noninsurance contracts | Corporate Finance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 0	0	0
Remarketing fee income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	112	117	107
Remarketing fee income | Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Remarketing fee income | Automotive Finance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	112	117	107
Remarketing fee income | Insurance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Remarketing fee income | Corporate Finance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Brokerage commissions and other revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	88	89	64
Brokerage commissions and other revenue | Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	88	89	64
Brokerage commissions and other revenue | Automotive Finance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Brokerage commissions and other revenue | Insurance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Brokerage commissions and other revenue | Corporate Finance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Banking fees and interchange income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	47	44	44
Customer rewards expense	28	20	14
Banking fees and interchange income | Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	47	44	44
Banking fees and interchange income | Automotive Finance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Banking fees and interchange income | Insurance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Banking fees and interchange income | Corporate Finance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Brokered/agent commissions
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	20	13	14
Brokered/agent commissions | Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Brokered/agent commissions | Automotive Finance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Brokered/agent commissions | Insurance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	20	13	14
Brokered/agent commissions | Corporate Finance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	22	19	24
Other | Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	4
Other | Automotive Finance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	19	18	20
Other | Insurance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	3	1	0
Other | Corporate Finance operations | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 0	$ 0	$ 0

Insurance Premiums and Servic_3

Insurance Premiums and Service Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Written
Direct	$ 622	$ 476	$ 388
Assumed	122	93	42
Gross insurance premiums	744	569	430
Earned
Direct	564	446	379
Assumed	113	68	29
Gross insurance premiums	677	514	408
Written
Ceded	(275)	(265)	(216)
Net insurance premiums	469	304	214
Earned
Ceded	(258)	(238)	(211)
Net insurance premiums	419	276	197
Service revenue written	1,003	971	889
Service revenue earned	994	995	954
Insurance premiums and service revenue written	1,472	1,275	1,103
Insurance premiums and service revenue earned	$ 1,413	$ 1,271	$ 1,151

Other Income, Net of Losses (De

Other Income, Net of Losses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other Nonoperating Income (Expense) [Abstract]
Late charges and other administrative fees	$ 197	$ 198	$ 162
Remarketing fees	112	117	107
Income from equity-method investments	20	4	102
Loss on nonmarketable equity investments, net	(6)	(10)	(132)
Other, net	335	273	256
Total other income, net of losses	$ 658	$ 582	$ 495

Reserves for Insurance Losses_3

Reserves for Insurance Losses and Loss Adjustment Expenses - Schedule of Short-duration Insurance Contracts, Claims Development (Details) $ in Millions	Dec. 31, 2024 USD ($) claim	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Claims Development [Line Items]
Incurred claims and allocated loss adjustment expenses, net of reinsurance	$ 3,230
Cumulative paid claims and allocated loss adjustment expenses, net of reinsurance	3,112
All outstanding liabilities for loss and allocated loss adjustment expenses before 2015, net of reinsurance	8
Reserves for insurance losses and allocated loss adjustment expenses, net of reinsurance	126	$ 71	$ 44
2015
Claims Development [Line Items]
Incurred claims and allocated loss adjustment expenses, net of reinsurance	272	272	272	$ 272	$ 272	$ 272	$ 272	$ 272	$ 271	$ 274
Total of incurred-but-not-reported liabilities plus expected development on reported claims	$ 0
Cumulative number of reported claims | claim	342,280
Cumulative paid claims and allocated loss adjustment expenses, net of reinsurance	$ 272	272	272	272	272	272	272	272	272	$ 252
2016
Claims Development [Line Items]
Incurred claims and allocated loss adjustment expenses, net of reinsurance	328	328	328	328	328	328	328	327	326
Total of incurred-but-not-reported liabilities plus expected development on reported claims	$ 0
Cumulative number of reported claims | claim	476,057
Cumulative paid claims and allocated loss adjustment expenses, net of reinsurance	$ 328	328	328	328	328	328	328	327	$ 302
2017
Claims Development [Line Items]
Incurred claims and allocated loss adjustment expenses, net of reinsurance	315	315	315	315	315	315	314	310
Total of incurred-but-not-reported liabilities plus expected development on reported claims	$ 0
Cumulative number of reported claims | claim	481,750
Cumulative paid claims and allocated loss adjustment expenses, net of reinsurance	$ 315	315	315	315	315	315	315	$ 289
2018
Claims Development [Line Items]
Incurred claims and allocated loss adjustment expenses, net of reinsurance	273	272	273	273	272	272	271
Total of incurred-but-not-reported liabilities plus expected development on reported claims	$ 0
Cumulative number of reported claims | claim	506,454
Cumulative paid claims and allocated loss adjustment expenses, net of reinsurance	$ 273	272	273	273	273	273	$ 245
2019
Claims Development [Line Items]
Incurred claims and allocated loss adjustment expenses, net of reinsurance	305	305	305	305	306	303
Total of incurred-but-not-reported liabilities plus expected development on reported claims	$ 0
Cumulative number of reported claims | claim	542,361
Cumulative paid claims and allocated loss adjustment expenses, net of reinsurance	$ 305	305	305	305	306	$ 278
2020
Claims Development [Line Items]
Incurred claims and allocated loss adjustment expenses, net of reinsurance	340	339	339	339	343
Total of incurred-but-not-reported liabilities plus expected development on reported claims	$ 0
Cumulative number of reported claims | claim	494,524
Cumulative paid claims and allocated loss adjustment expenses, net of reinsurance	$ 340	340	339	339	$ 313
2021
Claims Development [Line Items]
Incurred claims and allocated loss adjustment expenses, net of reinsurance	237	237	237	243
Total of incurred-but-not-reported liabilities plus expected development on reported claims	$ 0
Cumulative number of reported claims | claim	493,714
Cumulative paid claims and allocated loss adjustment expenses, net of reinsurance	$ 237	237	236	$ 213
2022
Claims Development [Line Items]
Incurred claims and allocated loss adjustment expenses, net of reinsurance	269	267	258
Total of incurred-but-not-reported liabilities plus expected development on reported claims	$ 0
Cumulative number of reported claims | claim	513,434
Cumulative paid claims and allocated loss adjustment expenses, net of reinsurance	$ 265	260	$ 225
2023
Claims Development [Line Items]
Incurred claims and allocated loss adjustment expenses, net of reinsurance	403	385
Total of incurred-but-not-reported liabilities plus expected development on reported claims	$ 7
Cumulative number of reported claims | claim	602,714
Cumulative paid claims and allocated loss adjustment expenses, net of reinsurance	$ 387	$ 328
2024
Claims Development [Line Items]
Incurred claims and allocated loss adjustment expenses, net of reinsurance	488
Total of incurred-but-not-reported liabilities plus expected development on reported claims	$ 78
Cumulative number of reported claims | claim	621,826
Cumulative paid claims and allocated loss adjustment expenses, net of reinsurance	$ 390

Reserves for Insurance Losses_4

Reserves for Insurance Losses and Loss Adjustment Expenses - Schedule of Historical Claims Duration (Details)	Dec. 31, 2024
Short-Duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Percentage payout of incurred claims, year one	89.70%
Percentage payout of incurred claims, year two	9.90%
Percentage payout of incurred claims, year three	0.30%
Percentage payout of incurred claims, year four	0%
Percentage payout of incurred claims, year five	0%
Percentage payout of incurred claims, year six	0%
Percentage payout of incurred claims, year seven	0.10%
Percentage payout of incurred claims, year eight	0%
Percentage payout of incurred claims, year nine	0%
Percentage payout of incurred claims, year ten	0%

Reserves for Insurance Losses_5

Reserves for Insurance Losses and Loss Adjustment Expenses - Schedule of Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Short-Duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net [Abstract]
Reserves for insurance losses and loss adjustment expenses, net of reinsurance	$ 126	$ 71	$ 44
Total reinsurance recoverable on unpaid claims	60	66	72	$ 81
Unallocated loss adjustment expenses	3	3	3
Total gross reserves for insurance losses and loss adjustment expenses	$ 189	$ 140	$ 119	$ 122

Reserves for Insurance Losses_6

Reserves for Insurance Losses and Loss Adjustment Expenses - Schedule of Insurance Losses and Loss Adjustment Expenses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Total gross reserves for insurance losses and loss adjustment expenses, beginning balance	$ 140	$ 119	$ 122
Less: Reinsurance recoverable	66	72	81
Net reserves for insurance losses and loss adjustment expenses	129	74	47	$ 41
Current year	521	414	282
Prior years	23	8	(2)
Total net insurance losses and loss adjustment expenses incurred	544	422	280
Current year	(420)	(354)	(246)
Prior years	(69)	(41)	(28)
Total net insurance losses and loss adjustment expenses paid or payable	(489)	(395)	(274)
Plus: Reinsurance recoverable	60	66	72
Total gross reserves for insurance losses and loss adjustment expenses, ending balance	$ 189	$ 140	$ 119

Other Operating Expenses (Detai

Other Operating Expenses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Expenses [Abstract]
Insurance commissions	$ 647	$ 636	$ 610
Technology and communications	438	436	406
Advertising and marketing	285	308	366
Property and equipment depreciation	224	196	165
Lease and loan administration	181	210	201
Regulatory and licensing fees	180	205	119
Professional services	147	145	173
Vehicle remarketing and repossession	129	116	91
Amortization of intangible assets	19	25	31
Other	425	414	345
Total other operating expenses	$ 2,675	$ 2,691	$ 2,507

Investment Securities - Schedul

Investment Securities - Schedule of Investment Portfolio (Details) - USD ($)	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2024
Available-for-sale securities
Amortized cost	$ 28,416,000,000	$ 26,810,000,000
Gross unrealized gains	9,000,000	5,000,000
Gross unrealized losses	(4,010,000,000)	(4,405,000,000)
Fair value	24,415,000,000	22,410,000,000
Held-to-maturity securities
Amortized cost	4,680,000,000	4,346,000,000
Gross unrealized gains	222,000,000	143,000,000
Gross unrealized losses	(173,000,000)	(196,000,000)
Fair value	4,729,000,000	4,293,000,000
Debt securities, available-for-sale, accrued interest receivable	$ 76,000,000	$ 73,000,000
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Debt securities, available-for-sale, allowance for credit loss, excluding accrued interest	$ 0	$ 0
Debt securities, held-to-maturity, allowance for credit loss, excluding accrued interest	0	0
Debt securities, held-to-maturity, accrued interest receivable	13,000,000	12,000,000
Debt securities, transferred from available-for-sale To held-to-maturity, fair value	3,600,000,000
Debt securities, transferred from available-for-sale to held-to-maturity, accumulated gross unrealized loss, before tax	911,000,000
Operating Segments | Insurance operations
Held-to-maturity securities
Deposit securities	12,000,000	13,000,000
Asset Pledged as Collateral with Right
Available-for-sale securities
Fair value	4,700,000,000	3,400,000,000
Held-to-maturity securities
Securities with the right to sell or pledge	1,400,000,000	439,000,000
Asset Pledged as Collateral with Right | Federal Home Loan Bank advances
Held-to-maturity securities
Securities with the right to sell or pledge	3,300,000,000	2,900,000,000
U.S. Treasury and federal agencies
Available-for-sale securities
Amortized cost	2,284,000,000	2,073,000,000
Gross unrealized gains	0	0
Gross unrealized losses	(209,000,000)	(200,000,000)
Fair value	2,075,000,000	1,873,000,000
U.S. States and political subdivisions
Available-for-sale securities
Amortized cost	727,000,000	704,000,000
Gross unrealized gains	1,000,000	0
Gross unrealized losses	(70,000,000)	(87,000,000)
Fair value	658,000,000	617,000,000
Foreign government
Available-for-sale securities
Amortized cost	190,000,000	198,000,000
Gross unrealized gains	1,000,000	1,000,000
Gross unrealized losses	(8,000,000)	(5,000,000)
Fair value	183,000,000	194,000,000
Agency mortgage-backed residential
Available-for-sale securities
Amortized cost	18,122,000,000	16,765,000,000
Gross unrealized gains	1,000,000	0
Gross unrealized losses	(2,739,000,000)	(3,112,000,000)
Fair value	15,384,000,000	13,653,000,000
Held-to-maturity securities
Amortized cost	999,000,000	935,000,000
Gross unrealized gains	0	0
Gross unrealized losses	(173,000,000)	(196,000,000)
Fair value	826,000,000	739,000,000
Hedged liability, fair value hedge, cumulative increase (decrease)		72,000,000
Hedged asset, fair value hedge, cumulative increase (decrease)	46,000,000
Mortgage-backed residential
Available-for-sale securities
Amortized cost	268,000,000	249,000,000
Gross unrealized gains	0	0
Gross unrealized losses	(43,000,000)	(43,000,000)
Fair value	225,000,000	206,000,000
Held-to-maturity securities
Amortized cost	3,603,000,000	3,323,000,000
Gross unrealized gains	221,000,000	142,000,000
Gross unrealized losses	0	0
Fair value	3,824,000,000	3,465,000,000
Agency mortgage-backed commercial
Available-for-sale securities
Amortized cost	4,539,000,000	4,819,000,000
Gross unrealized gains	2,000,000	1,000,000
Gross unrealized losses	(783,000,000)	(836,000,000)
Fair value	3,758,000,000	3,984,000,000
Held-to-maturity securities
Hedged liability, fair value hedge, cumulative increase (decrease)		34,000,000
Hedged asset, fair value hedge, cumulative increase (decrease)	29,000,000
Asset-backed
Available-for-sale securities
Amortized cost	344,000,000	131,000,000
Gross unrealized gains	0	0
Gross unrealized losses	(12,000,000)	(2,000,000)
Fair value	332,000,000	129,000,000
Held-to-maturity securities
Amortized cost	78,000,000	88,000,000
Gross unrealized gains	1,000,000	1,000,000
Gross unrealized losses	0	0
Fair value	79,000,000	89,000,000
Corporate debt
Available-for-sale securities
Amortized cost	1,942,000,000	1,871,000,000
Gross unrealized gains	4,000,000	3,000,000
Gross unrealized losses	(146,000,000)	(120,000,000)
Fair value	$ 1,800,000,000	$ 1,754,000,000

Investment Securities - Sched_2

Investment Securities - Schedule of Investments Classified by Contractual Maturity Date (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Amount
Total available-for-sale securities	$ 22,410	$ 24,415
Due in one year or less	327	449
Due after one year through five years	2,438	2,672
Due after five years through ten years	3,371	3,279
Due after ten years	$ 16,274	$ 18,015
Yield
Total	2.50%	2.50%
Due in one year or less	2.30%	1.70%
Due after one year through five years	2.20%	2.10%
Due after five years through ten years	2.60%	2.40%
Due after ten years	2.60%	2.50%
Amortized cost of available-for-sale securities
Total	$ 26,810	$ 28,416
Due in one year or less	330	461
Due after one year through five years	2,579	2,844
Due after five years through ten years	3,844	3,746
Due after ten years	20,057	21,365
Amount
Total	4,346	4,680
Due in one year or less	0	1
Due after one year through five years	64	41
Due after five years through ten years	33	14
Due after ten years	$ 4,249	$ 4,624
Yield
Total	2.90%	2.80%
Due in one year or less	0%	5.60%
Due after one year through five years	5.30%	5.60%
Due after five years through ten years	5%	3.40%
Due after ten years	2.80%	2.80%
Cash equivalents	$ 106	$ 36
U.S. Treasury and federal agencies
Amount
Total available-for-sale securities	1,873	2,075
Due in one year or less	54	215
Due after one year through five years	1,087	1,120
Due after five years through ten years	732	740
Due after ten years	$ 0	$ 0
Yield
Total	1.60%	1.60%
Due in one year or less	1%	0.90%
Due after one year through five years	1.50%	1.50%
Due after five years through ten years	1.90%	1.90%
Due after ten years	0%	0%
Amortized cost of available-for-sale securities
Total	$ 2,073	$ 2,284
U.S. States and political subdivisions
Amount
Total available-for-sale securities	617	658
Due in one year or less	33	4
Due after one year through five years	72	55
Due after five years through ten years	86	110
Due after ten years	$ 426	$ 489
Yield
Total	3.40%	3.20%
Due in one year or less	6.20%	3.40%
Due after one year through five years	3.10%	2.70%
Due after five years through ten years	4.10%	3.60%
Due after ten years	3.20%	3.10%
Amortized cost of available-for-sale securities
Total	$ 704	$ 727
Foreign government
Amount
Total available-for-sale securities	194	183
Due in one year or less	33	20
Due after one year through five years	51	82
Due after five years through ten years	110	81
Due after ten years	$ 0	$ 0
Yield
Total	2.70%	2.30%
Due in one year or less	2.10%	1.30%
Due after one year through five years	2.50%	2.40%
Due after five years through ten years	2.90%	2.50%
Due after ten years	0%	0%
Amortized cost of available-for-sale securities
Total	$ 198	$ 190
Agency mortgage-backed residential
Amount
Total available-for-sale securities	13,653	15,384
Due in one year or less	0	0
Due after one year through five years	7	10
Due after five years through ten years	23	32
Due after ten years	$ 13,623	$ 15,342
Yield
Total	2.60%	2.60%
Due in one year or less	0%	0%
Due after one year through five years	2%	1.90%
Due after five years through ten years	2.50%	2.50%
Due after ten years	2.60%	2.60%
Amortized cost of available-for-sale securities
Total	$ 16,765	$ 18,122
Amount
Total	935	999
Due in one year or less	0	0
Due after one year through five years	0	0
Due after five years through ten years	0	0
Due after ten years	$ 935	$ 999
Yield
Total	2.70%	2.80%
Due in one year or less	0%	0%
Due after one year through five years	0%	0%
Due after five years through ten years	0%	0%
Due after ten years	2.70%	2.80%
Hedged liability, fair value hedge, cumulative increase (decrease)	$ 72
Hedged asset, fair value hedge, cumulative increase (decrease)		$ 46
Mortgage-backed residential
Amount
Total available-for-sale securities	206	225
Due in one year or less	0	0
Due after one year through five years	0	0
Due after five years through ten years	0	0
Due after ten years	$ 206	$ 225
Yield
Total	2.70%	2.70%
Due in one year or less	0%	0%
Due after one year through five years	0%	0%
Due after five years through ten years	0%	0%
Due after ten years	2.70%	2.70%
Amortized cost of available-for-sale securities
Total	$ 249	$ 268
Amount
Total	3,323	3,603
Due in one year or less	0	0
Due after one year through five years	0	0
Due after five years through ten years	9	12
Due after ten years	$ 3,314	$ 3,591
Yield
Total	2.80%	2.80%
Due in one year or less	0%	0%
Due after one year through five years	0%	0%
Due after five years through ten years	3.10%	3%
Due after ten years	2.80%	2.80%
Agency mortgage-backed commercial
Amount
Total available-for-sale securities	$ 3,984	$ 3,758
Due in one year or less	23	0
Due after one year through five years	339	163
Due after five years through ten years	1,724	1,641
Due after ten years	$ 1,898	$ 1,954
Yield
Total	2.50%	2.30%
Due in one year or less	3.10%	0%
Due after one year through five years	3.70%	3.80%
Due after five years through ten years	2.50%	2.40%
Due after ten years	2.10%	2.10%
Amortized cost of available-for-sale securities
Total	$ 4,819	$ 4,539
Yield
Hedged liability, fair value hedge, cumulative increase (decrease)	34
Hedged asset, fair value hedge, cumulative increase (decrease)		29
Asset-backed
Amount
Total available-for-sale securities	129	332
Due in one year or less	0	0
Due after one year through five years	128	327
Due after five years through ten years	1	4
Due after ten years	$ 0	$ 1
Yield
Total	1.50%	1.70%
Due in one year or less	0%	0%
Due after one year through five years	1.50%	1.70%
Due after five years through ten years	4%	3.90%
Due after ten years	0%	2.70%
Amortized cost of available-for-sale securities
Total	$ 131	$ 344
Amount
Total	88	78
Due in one year or less	0	1
Due after one year through five years	64	41
Due after five years through ten years	24	2
Due after ten years	$ 0	$ 34
Yield
Total	5.40%	5.60%
Due in one year or less	0%	5.60%
Due after one year through five years	5.30%	5.60%
Due after five years through ten years	5.60%	6%
Due after ten years	0%	5.60%
Corporate debt
Amount
Total available-for-sale securities	$ 1,754	$ 1,800
Due in one year or less	184	210
Due after one year through five years	754	915
Due after five years through ten years	695	671
Due after ten years	$ 121	$ 4
Yield
Total	3.10%	2.70%
Due in one year or less	3%	2.40%
Due after one year through five years	2.60%	2.60%
Due after five years through ten years	3.30%	2.90%
Due after ten years	5.30%	6.20%
Amortized cost of available-for-sale securities
Total	$ 1,871	$ 1,942

Investment Securities - Sched_3

Investment Securities - Schedule of Investment Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Taxable interest	$ 952	$ 938	$ 765
Taxable dividends	22	20	17
Interest and dividends exempt from U.S. federal income tax	22	22	22
Interest and dividends on investment securities	$ 996	$ 980	$ 804

Investment Securities - Sched_4

Investment Securities - Schedule Of Realized Gain (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Gross realized gains	$ 3	$ 5	$ 23
Net realized gain on available-for-sale securities	3	5	23
Net realized gain on equity securities	75	32	72
Net unrealized (loss) gain on equity securities	(6)	107	(215)
Other gain (loss) on investments, net	$ 72	$ 144	$ (120)

Investment securities - Sched_5

Investment securities - Schedule of Investments Classified by Credit Rating (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	$ 4,346	$ 4,680
Agency mortgage-backed residential
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	935	999
Mortgage-backed residential
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	3,323	3,603
Asset-backed
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	88	78
AAA
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	3,322	3,570
AAA | Agency mortgage-backed residential
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	0	0
AAA | Mortgage-backed residential
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	3,241	3,497
AAA | Asset-backed
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	81	73
AA
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	1,016	1,094
AA | Agency mortgage-backed residential
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	935	999
AA | Mortgage-backed residential
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	78	93
AA | Asset-backed
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	3	2
A
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	6	15
A | Agency mortgage-backed residential
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	0	0
A | Mortgage-backed residential
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	4	13
A | Asset-backed
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	2	2
BBB
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	2	1
BBB | Agency mortgage-backed residential
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	0	0
BBB | Mortgage-backed residential
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	0	0
BBB | Asset-backed
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities	$ 2	$ 1

Investment Securities - Sched_6

Investment Securities - Schedule of Unrealized Loss on Investments (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Less than 12 months
Fair value	$ 947,000,000	$ 590,000,000
Unrealized loss	(22,000,000)	(10,000,000)
12 months or longer
Fair value	21,069,000,000	23,331,000,000
Unrealized loss	(4,383,000,000)	(4,000,000,000)
Credit reserves, available-for-sale	0	0
Credit reserves, held-to-maturity	0	0
U.S. Treasury and federal agencies
Less than 12 months
Fair value	0	0
Unrealized loss	0	0
12 months or longer
Fair value	1,873,000,000	2,075,000,000
Unrealized loss	(200,000,000)	(209,000,000)
U.S. States and political subdivisions
Less than 12 months
Fair value	87,000,000	70,000,000
Unrealized loss	(2,000,000)	0
12 months or longer
Fair value	472,000,000	501,000,000
Unrealized loss	(85,000,000)	(70,000,000)
Foreign government
Less than 12 months
Fair value	40,000,000	16,000,000
Unrealized loss	0	0
12 months or longer
Fair value	112,000,000	134,000,000
Unrealized loss	(5,000,000)	(8,000,000)
Agency mortgage-backed residential
Less than 12 months
Fair value	127,000,000	300,000,000
Unrealized loss	(3,000,000)	(5,000,000)
12 months or longer
Fair value	13,518,000,000	15,015,000,000
Unrealized loss	(3,109,000,000)	(2,734,000,000)
Mortgage-backed residential
Less than 12 months
Fair value	0	0
Unrealized loss	0	0
12 months or longer
Fair value	206,000,000	225,000,000
Unrealized loss	(43,000,000)	(43,000,000)
Agency mortgage-backed commercial
Less than 12 months
Fair value	428,000,000	153,000,000
Unrealized loss	(11,000,000)	(4,000,000)
12 months or longer
Fair value	3,445,000,000	3,472,000,000
Unrealized loss	(825,000,000)	(779,000,000)
Asset-backed
Less than 12 months
Fair value	0	18,000,000
Unrealized loss	0	0
12 months or longer
Fair value	124,000,000	302,000,000
Unrealized loss	(2,000,000)	(12,000,000)
Corporate debt
Less than 12 months
Fair value	265,000,000	33,000,000
Unrealized loss	(6,000,000)	(1,000,000)
12 months or longer
Fair value	1,319,000,000	1,607,000,000
Unrealized loss	$ (114,000,000)	$ (145,000,000)

Finance Receivables and Loans_3

Finance Receivables and Loans, Net - Schedule of Accounts, Notes, Loans and Financing Receivables (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total finance receivables and loans	$ 136,030	$ 139,439
Unamortized premiums and discounts and deferred fees and costs	2,300	2,300
Accrued interest receivable	839	853
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total finance receivables and loans	103,285	104,977
Consumer | Automotive
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total finance receivables and loans	83,757	84,320
Consumer | Consumer mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total finance receivables and loans	17,234	18,667
Interest-only mortgage loans	12	15
Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total finance receivables and loans	2,294	1,990
Consumer | Credit Card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total finance receivables and loans	2,294	1,990
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total finance receivables and loans	32,745	34,462
Commercial | Automotive
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total finance receivables and loans	18,259	18,700
Commercial | Consumer mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total finance receivables and loans	6,274	6,050
Commercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total finance receivables and loans	$ 8,212	$ 9,712

Finance Receivables and Loans_4

Finance Receivables and Loans, Net - Schedule of Allowance for Credit Losses on Financing Receivables (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Allowance, beginning balance	$ 3,587	$ 3,711
Charge-offs	(2,948)	(2,720)
Recoveries	914	833
Net charge-offs	(2,034)	(1,887)
Write-downs from transfers to held-for-sale	(5)	(215)
Provision for credit losses	2,166	1,979
Other	0	(1)
Allowance, ending balance	3,714	3,587
Disposal Group, Held-for-Sale, Not Discontinued Operations | Ally Lending
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Unfunded lending commitments		5
Unfunded Loan Commitment
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Provision for credit losses		(11)
Consumer
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Charge-offs	(2,945)	(2,590)
Consumer | Automotive
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Allowance, beginning balance	3,083	3,020
Charge-offs	(2,681)	(2,284)
Recoveries	871	793
Net charge-offs	(1,810)	(1,491)
Write-downs from transfers to held-for-sale	(5)	(41)
Provision for credit losses	1,902	1,595
Other	0	0
Allowance, ending balance	3,170	3,083
Consumer | Consumer mortgage
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Allowance, beginning balance	21	27
Charge-offs	(2)	(3)
Recoveries	5	9
Net charge-offs	3	6
Write-downs from transfers to held-for-sale	0	0
Provision for credit losses	(7)	(11)
Other	2	(1)
Allowance, ending balance	19	21
Consumer | Consumer other
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Allowance, beginning balance	293	426
Charge-offs	(262)	(303)
Recoveries	30	25
Net charge-offs	(232)	(278)
Write-downs from transfers to held-for-sale	0	(174)
Provision for credit losses	259	319
Other	(1)	0
Allowance, ending balance	319	293
Fair value, option, carrying amount, financing receivable, no allowance			$ 3
Commercial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Allowance, beginning balance	190	238
Charge-offs	(3)	(130)
Recoveries	8	6
Net charge-offs	5	(124)
Write-downs from transfers to held-for-sale	0	0
Provision for credit losses	12	76
Other	(1)	0
Allowance, ending balance	206	190
Commercial | Automotive
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Charge-offs	$ (3)	(24)
Commercial | Consumer other
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Charge-offs		$ (106)

Finance Receivables and Loans_5

Finance Receivables and Loans, Net - Schedule of Sales of Financing Receivables and Loans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total sales and transfers	$ 1,731	$ 3,739
Consumer | Automotive
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total sales and transfers	1,108	1,667
Consumer | Consumer mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total sales and transfers	325	0
Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total sales and transfers	0	1,940
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total sales and transfers	$ 298	$ 132

Finance Receivables and Loans_6

Finance Receivables and Loans, Net - Schedule of Purchases of Financing Receivables and Loans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total purchases of finance receivables and loans	$ 3,264	$ 3,892
Consumer | Automotive
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total purchases of finance receivables and loans	3,243	3,861
Consumer | Consumer mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total purchases of finance receivables and loans	21	21
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total purchases of finance receivables and loans	$ 0	$ 10

Finance Receivables and Loans_7

Finance Receivables and Loans, Net - Schedule of Financing Receivables, Nonaccrual Status (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	$ 1,486	$ 1,394	$ 1,454
Financing receivable, nonaccrual, with no allowance	518	585
Financing receivable, nonaccrual, interest income	17	16
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	1,375	1,275	1,292
Financing receivable, nonaccrual, with no allowance	512	564
Consumer | Automotive
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	1,231	1,129	1,187
Financing receivable, nonaccrual, with no allowance	476	531
Consumer | Consumer mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	54	54	49
Financing receivable, nonaccrual, with no allowance	36	33
Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	90	92	56
Financing receivable, nonaccrual, with no allowance	0	0
Consumer | Personal Lending
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status		0	13
Financing receivable, nonaccrual, with no allowance		0
Consumer | Credit Card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	90	92	43
Financing receivable, nonaccrual, with no allowance	0	0
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	111	119	162
Financing receivable, nonaccrual, with no allowance	6	21
Commercial | Automotive
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	15	18	5
Financing receivable, nonaccrual, with no allowance	0	13
Commercial | Consumer mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	2	3	0
Financing receivable, nonaccrual, with no allowance	2	3
Commercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	94	98	$ 157
Financing receivable, nonaccrual, with no allowance	$ 4	$ 5

Finance Receivables and Loans_8

Finance Receivables and Loans, Net - Schedule of Financing Receivable Credit Quality Indicators Consumer (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Total finance receivables and loans	$ 136,030	$ 139,439
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Total finance receivables and loans	103,285	104,977
Consumer | Consumer automotive, excludes basis adjustment
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	30,919	31,450
Year two, originated, fiscal year before current fiscal year	21,604	25,350
Year three, originated, two years before current fiscal year	16,607	15,373
Year four, originated, three years before current fiscal year	9,247	6,555
Year five, originated, four years before current fiscal year	3,344	3,587
Originated, more than five years before current fiscal year	2,077	2,071
Revolving loans	0	0
Revolving loans converted to term	0	0
Total finance receivables and loans	83,798	84,386
Consumer | Consumer mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	13	153
Year two, originated, fiscal year before current fiscal year	33	2,181
Year three, originated, two years before current fiscal year	1,914	10,396
Year four, originated, three years before current fiscal year	9,856	1,843
Year five, originated, four years before current fiscal year	1,721	752
Originated, more than five years before current fiscal year	3,564	3,178
Revolving loans	116	145
Revolving loans converted to term	17	19
Total finance receivables and loans	17,234	18,667
Consumer | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	0	0
Year two, originated, fiscal year before current fiscal year	0	0
Year three, originated, two years before current fiscal year	0	0
Year four, originated, three years before current fiscal year	0	0
Year five, originated, four years before current fiscal year	0	0
Originated, more than five years before current fiscal year	0	0
Revolving loans	2,294	1,990
Revolving loans converted to term	0	0
Total finance receivables and loans	2,294	1,990
Consumer | Credit Card
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	0	0
Year two, originated, fiscal year before current fiscal year	0	0
Year three, originated, two years before current fiscal year	0	0
Year four, originated, three years before current fiscal year	0	0
Year five, originated, four years before current fiscal year	0	0
Originated, more than five years before current fiscal year	0	0
Revolving loans	2,294	1,990
Revolving loans converted to term	0	0
Total finance receivables and loans	2,294	1,990
Consumer | Automotive
Financing Receivable, Credit Quality Indicator [Line Items]
Total finance receivables and loans	83,757	84,320
Liability excluded from amortized cost of hedged asset, portfolio layer method	41	66
Consumer Portfolio Segment, Excludes Basis Adjustment for Automotive Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	30,932	31,603
Year two, originated, fiscal year before current fiscal year	21,637	27,531
Year three, originated, two years before current fiscal year	18,521	25,769
Year four, originated, three years before current fiscal year	19,103	8,398
Year five, originated, four years before current fiscal year	5,065	4,339
Originated, more than five years before current fiscal year	5,641	5,249
Revolving loans	2,410	2,135
Revolving loans converted to term	17	19
Total finance receivables and loans	103,326	105,043
Current | Consumer | Consumer automotive, excludes basis adjustment
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	30,322	30,677
Year two, originated, fiscal year before current fiscal year	20,387	23,699
Year three, originated, two years before current fiscal year	15,234	14,209
Year four, originated, three years before current fiscal year	8,368	6,132
Year five, originated, four years before current fiscal year	3,064	3,306
Originated, more than five years before current fiscal year	1,849	1,876
Revolving loans	0	0
Revolving loans converted to term	0	0
Total finance receivables and loans	79,224	79,899
Current | Consumer | Consumer mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	13	152
Year two, originated, fiscal year before current fiscal year	31	2,170
Year three, originated, two years before current fiscal year	1,901	10,374
Year four, originated, three years before current fiscal year	9,834	1,836
Year five, originated, four years before current fiscal year	1,714	747
Originated, more than five years before current fiscal year	3,503	3,124
Revolving loans	115	142
Revolving loans converted to term	15	17
Total finance receivables and loans	17,126	18,562
Current | Consumer | Credit Card
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	0	0
Year two, originated, fiscal year before current fiscal year	0	0
Year three, originated, two years before current fiscal year	0	0
Year four, originated, three years before current fiscal year	0	0
Year five, originated, four years before current fiscal year	0	0
Originated, more than five years before current fiscal year	0	0
Revolving loans	2,140	1,828
Revolving loans converted to term	0	0
Total finance receivables and loans	2,140	1,828
30–59 days past due | Consumer | Consumer automotive, excludes basis adjustment
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	419	539
Year two, originated, fiscal year before current fiscal year	756	1,041
Year three, originated, two years before current fiscal year	841	739
Year four, originated, three years before current fiscal year	546	270
Year five, originated, four years before current fiscal year	174	181
Originated, more than five years before current fiscal year	141	122
Revolving loans	0	0
Revolving loans converted to term	0	0
Total finance receivables and loans	2,877	2,892
30–59 days past due | Consumer | Consumer mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	0	1
Year two, originated, fiscal year before current fiscal year	0	8
Year three, originated, two years before current fiscal year	7	14
Year four, originated, three years before current fiscal year	9	3
Year five, originated, four years before current fiscal year	5	3
Originated, more than five years before current fiscal year	27	23
Revolving loans	0	0
Revolving loans converted to term	0	1
Total finance receivables and loans	48	53
30–59 days past due | Consumer | Credit Card
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	0	0
Year two, originated, fiscal year before current fiscal year	0	0
Year three, originated, two years before current fiscal year	0	0
Year four, originated, three years before current fiscal year	0	0
Year five, originated, four years before current fiscal year	0	0
Originated, more than five years before current fiscal year	0	0
Revolving loans	35	39
Revolving loans converted to term	0	0
Total finance receivables and loans	35	39
60–89 days past due | Consumer | Consumer automotive, excludes basis adjustment
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	131	170
Year two, originated, fiscal year before current fiscal year	338	443
Year three, originated, two years before current fiscal year	390	303
Year four, originated, three years before current fiscal year	240	109
Year five, originated, four years before current fiscal year	75	68
Originated, more than five years before current fiscal year	56	45
Revolving loans	0	0
Revolving loans converted to term	0	0
Total finance receivables and loans	1,230	1,138
60–89 days past due | Consumer | Consumer mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	0	0
Year two, originated, fiscal year before current fiscal year	0	2
Year three, originated, two years before current fiscal year	4	4
Year four, originated, three years before current fiscal year	4	3
Year five, originated, four years before current fiscal year	1	0
Originated, more than five years before current fiscal year	4	6
Revolving loans	0	1
Revolving loans converted to term	0	0
Total finance receivables and loans	13	16
60–89 days past due | Consumer | Credit Card
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	0	0
Year two, originated, fiscal year before current fiscal year	0	0
Year three, originated, two years before current fiscal year	0	0
Year four, originated, three years before current fiscal year	0	0
Year five, originated, four years before current fiscal year	0	0
Originated, more than five years before current fiscal year	0	0
Revolving loans	33	34
Revolving loans converted to term	0	0
Total finance receivables and loans	33	34
90 or more days past due | Consumer | Consumer automotive, excludes basis adjustment
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	47	64
Year two, originated, fiscal year before current fiscal year	123	167
Year three, originated, two years before current fiscal year	142	122
Year four, originated, three years before current fiscal year	93	44
Year five, originated, four years before current fiscal year	31	32
Originated, more than five years before current fiscal year	31	28
Revolving loans	0	0
Revolving loans converted to term	0	0
Total finance receivables and loans	467	457
90 or more days past due | Consumer | Consumer mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	0	0
Year two, originated, fiscal year before current fiscal year	2	1
Year three, originated, two years before current fiscal year	2	4
Year four, originated, three years before current fiscal year	9	1
Year five, originated, four years before current fiscal year	1	2
Originated, more than five years before current fiscal year	30	25
Revolving loans	1	2
Revolving loans converted to term	2	1
Total finance receivables and loans	47	36
90 or more days past due | Consumer | Credit Card
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	0	0
Year two, originated, fiscal year before current fiscal year	0	0
Year three, originated, two years before current fiscal year	0	0
Year four, originated, three years before current fiscal year	0	0
Year five, originated, four years before current fiscal year	0	0
Originated, more than five years before current fiscal year	0	0
Revolving loans	86	89
Revolving loans converted to term	0	0
Total finance receivables and loans	$ 86	$ 89

Finance Receivables and Loans_9

Finance Receivables and Loans, Net - Schedule of Financing Receivable Credit Quality Indicators Commercial (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Total finance receivables and loans	$ 136,030	$ 139,439
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	2,197	1,820
Year two, originated, fiscal year before current fiscal year	1,652	2,845
Year three, originated, two years before current fiscal year	2,305	1,929
Year four, originated, three years before current fiscal year	1,739	1,597
Year five, originated, four years before current fiscal year	1,109	1,002
Originated, more than five years before current fiscal year	1,555	1,223
Revolving loans	22,032	23,811
Revolving loans converted to term	156	235
Total finance receivables and loans	32,745	34,462
Automotive | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	525	515
Year two, originated, fiscal year before current fiscal year	374	520
Year three, originated, two years before current fiscal year	352	195
Year four, originated, three years before current fiscal year	150	98
Year five, originated, four years before current fiscal year	67	59
Originated, more than five years before current fiscal year	53	37
Revolving loans	16,738	17,276
Revolving loans converted to term	0	0
Total finance receivables and loans	18,259	18,700
Automotive | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	522	509
Year two, originated, fiscal year before current fiscal year	336	512
Year three, originated, two years before current fiscal year	337	165
Year four, originated, three years before current fiscal year	125	97
Year five, originated, four years before current fiscal year	64	58
Originated, more than five years before current fiscal year	52	22
Revolving loans	15,005	16,446
Revolving loans converted to term	0	0
Total finance receivables and loans	16,441	17,809
Automotive | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	3	6
Year two, originated, fiscal year before current fiscal year	38	7
Year three, originated, two years before current fiscal year	15	30
Year four, originated, three years before current fiscal year	25	1
Year five, originated, four years before current fiscal year	3	1
Originated, more than five years before current fiscal year	1	14
Revolving loans	1,694	723
Revolving loans converted to term	0	0
Total finance receivables and loans	1,779	782
Automotive | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	0	0
Year two, originated, fiscal year before current fiscal year	0	1
Year three, originated, two years before current fiscal year	0	0
Year four, originated, three years before current fiscal year	0	0
Year five, originated, four years before current fiscal year	0	0
Originated, more than five years before current fiscal year	0	0
Revolving loans	33	44
Revolving loans converted to term	0	0
Total finance receivables and loans	33	45
Automotive | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	0	0
Year two, originated, fiscal year before current fiscal year	0	0
Year three, originated, two years before current fiscal year	0	0
Year four, originated, three years before current fiscal year	0	0
Year five, originated, four years before current fiscal year	0	0
Originated, more than five years before current fiscal year	0	1
Revolving loans	6	63
Revolving loans converted to term	0	0
Total finance receivables and loans	6	64
Other | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	707	331
Year two, originated, fiscal year before current fiscal year	323	854
Year three, originated, two years before current fiscal year	655	577
Year four, originated, three years before current fiscal year	502	614
Year five, originated, four years before current fiscal year	250	318
Originated, more than five years before current fiscal year	361	374
Revolving loans	5,294	6,435
Revolving loans converted to term	120	209
Total finance receivables and loans	8,212	9,712
Other | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	707	331
Year two, originated, fiscal year before current fiscal year	296	646
Year three, originated, two years before current fiscal year	261	343
Year four, originated, three years before current fiscal year	199	405
Year five, originated, four years before current fiscal year	18	266
Originated, more than five years before current fiscal year	205	180
Revolving loans	5,047	6,202
Revolving loans converted to term	84	173
Total finance receivables and loans	6,817	8,546
Other | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	0	0
Year two, originated, fiscal year before current fiscal year	0	208
Year three, originated, two years before current fiscal year	394	188
Year four, originated, three years before current fiscal year	280	206
Year five, originated, four years before current fiscal year	186	51
Originated, more than five years before current fiscal year	76	85
Revolving loans	226	198
Revolving loans converted to term	32	25
Total finance receivables and loans	1,194	961
Other | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	0	0
Year two, originated, fiscal year before current fiscal year	27	0
Year three, originated, two years before current fiscal year	0	46
Year four, originated, three years before current fiscal year	23	3
Year five, originated, four years before current fiscal year	46	0
Originated, more than five years before current fiscal year	54	83
Revolving loans	12	25
Revolving loans converted to term	4	11
Total finance receivables and loans	166	168
Other | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	0	0
Year two, originated, fiscal year before current fiscal year	0	0
Year three, originated, two years before current fiscal year	0	0
Year four, originated, three years before current fiscal year	0	0
Year five, originated, four years before current fiscal year	0	0
Originated, more than five years before current fiscal year	26	26
Revolving loans	9	10
Revolving loans converted to term	0	0
Total finance receivables and loans	35	36
Other | Loss | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year		0
Year two, originated, fiscal year before current fiscal year		0
Year three, originated, two years before current fiscal year		0
Year four, originated, three years before current fiscal year		0
Year five, originated, four years before current fiscal year		1
Originated, more than five years before current fiscal year		0
Revolving loans		0
Revolving loans converted to term		0
Total finance receivables and loans		1
Commercial real estate | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	965	974
Year two, originated, fiscal year before current fiscal year	955	1,471
Year three, originated, two years before current fiscal year	1,298	1,157
Year four, originated, three years before current fiscal year	1,087	885
Year five, originated, four years before current fiscal year	792	625
Originated, more than five years before current fiscal year	1,141	812
Revolving loans	0	100
Revolving loans converted to term	36	26
Total finance receivables and loans	6,274	6,050
Commercial real estate | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	959	971
Year two, originated, fiscal year before current fiscal year	904	1,452
Year three, originated, two years before current fiscal year	1,228	1,129
Year four, originated, three years before current fiscal year	1,030	884
Year five, originated, four years before current fiscal year	757	607
Originated, more than five years before current fiscal year	1,137	811
Revolving loans	0	100
Revolving loans converted to term	36	26
Total finance receivables and loans	6,051	5,980
Commercial real estate | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	6	3
Year two, originated, fiscal year before current fiscal year	51	16
Year three, originated, two years before current fiscal year	69	28
Year four, originated, three years before current fiscal year	57	1
Year five, originated, four years before current fiscal year	35	18
Originated, more than five years before current fiscal year	3	0
Revolving loans	0	0
Revolving loans converted to term	0	0
Total finance receivables and loans	221	66
Commercial real estate | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year		0
Year two, originated, fiscal year before current fiscal year		3
Year three, originated, two years before current fiscal year		0
Year four, originated, three years before current fiscal year		0
Year five, originated, four years before current fiscal year		0
Originated, more than five years before current fiscal year		1
Revolving loans		0
Revolving loans converted to term		0
Total finance receivables and loans		$ 4
Commercial real estate | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year	0
Year two, originated, fiscal year before current fiscal year	0
Year three, originated, two years before current fiscal year	1
Year four, originated, three years before current fiscal year	0
Year five, originated, four years before current fiscal year	0
Originated, more than five years before current fiscal year	1
Revolving loans	0
Revolving loans converted to term	0
Total finance receivables and loans	$ 2

Finance Receivables and Loan_10

Finance Receivables and Loans, Net - Schedule of Past Due Financing Receivables and Loans Commercial (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	$ 136,030	$ 139,439
Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	32,745	34,462
Automotive | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	18,259	18,700
Other | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	8,212	9,712
Commercial real estate | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	6,274	6,050
Total past due | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	42	5
Total past due | Automotive | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	5	0
Total past due | Other | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	35	5
Total past due | Commercial real estate | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	2	0
30–59 days past due | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	41	2
30–59 days past due | Automotive | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	5	0
30–59 days past due | Other | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	35	2
30–59 days past due | Commercial real estate | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	1	0
60–89 days past due | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	0	0
60–89 days past due | Automotive | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	0	0
60–89 days past due | Other | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	0	0
60–89 days past due | Commercial real estate | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	0	0
90 or more days past due | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	1	3
90 or more days past due | Automotive | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	0	0
90 or more days past due | Other | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	0	3
90 or more days past due | Commercial real estate | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	1	0
Current | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	32,703	34,457
Current | Automotive | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	18,254	18,700
Current | Other | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	8,177	9,707
Current | Commercial real estate | Commercial
Financing Receivable, Past Due [Line Items]
Finance receivables and loans, net	$ 6,272	$ 6,050

Finance Receivables and Loan_11

Finance Receivables and Loans, Net - Schedule of Financing Receivable Gross Charge-Offs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year, writeoff	$ 160	$ 239
Year two, originated, current fiscal year, writeoff	779	1,034
Year three, originated, current fiscal year, writeoff	943	680
Year four, originated, current fiscal year, writeoff	511	197
Year five, originated, current fiscal year, writeoff	137	221
More than five years before current fiscal year, writeoff	154	151
Revolving loans	248	188
Revolving loans converted to term	16	10
Total	2,948	2,720
Write-downs from transfers to held-for-sale	5	215
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year, writeoff	160	239
Year two, originated, current fiscal year, writeoff	779	1,034
Year three, originated, current fiscal year, writeoff	943	680
Year four, originated, current fiscal year, writeoff	511	197
Year five, originated, current fiscal year, writeoff	137	142
More than five years before current fiscal year, writeoff	153	123
Revolving loans	246	165
Revolving loans converted to term	16	10
Total	2,945	2,590
Consumer | Automotive
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year, writeoff	160	225
Year two, originated, current fiscal year, writeoff	779	952
Year three, originated, current fiscal year, writeoff	943	651
Year four, originated, current fiscal year, writeoff	510	194
Year five, originated, current fiscal year, writeoff	137	142
More than five years before current fiscal year, writeoff	152	120
Revolving loans	0	0
Revolving loans converted to term	0	0
Total	2,681	2,284
Write-downs from transfers to held-for-sale	5	41
Consumer | Consumer mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year, writeoff	0	0
Year two, originated, current fiscal year, writeoff	0	0
Year three, originated, current fiscal year, writeoff	0	0
Year four, originated, current fiscal year, writeoff	1	0
Year five, originated, current fiscal year, writeoff	0	0
More than five years before current fiscal year, writeoff	1	3
Revolving loans	0	0
Revolving loans converted to term	0	0
Total	2	3
Write-downs from transfers to held-for-sale	0	0
Consumer | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year, writeoff	0	14
Year two, originated, current fiscal year, writeoff	0	82
Year three, originated, current fiscal year, writeoff	0	29
Year four, originated, current fiscal year, writeoff	0	3
Year five, originated, current fiscal year, writeoff	0	0
More than five years before current fiscal year, writeoff	0	0
Revolving loans	246	165
Revolving loans converted to term	16	10
Total	262	303
Write-downs from transfers to held-for-sale	0	174
Consumer | Personal Lending
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year, writeoff		14
Year two, originated, current fiscal year, writeoff		82
Year three, originated, current fiscal year, writeoff		29
Year four, originated, current fiscal year, writeoff		3
Year five, originated, current fiscal year, writeoff		0
More than five years before current fiscal year, writeoff		0
Revolving loans		0
Revolving loans converted to term		0
Total		128
Consumer | Credit Card
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year, writeoff	0	0
Year two, originated, current fiscal year, writeoff	0	0
Year three, originated, current fiscal year, writeoff	0	0
Year four, originated, current fiscal year, writeoff	0	0
Year five, originated, current fiscal year, writeoff	0	0
More than five years before current fiscal year, writeoff	0	0
Revolving loans	246	165
Revolving loans converted to term	16	10
Total	262	175
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year, writeoff	0	0
Year two, originated, current fiscal year, writeoff	0	0
Year three, originated, current fiscal year, writeoff	0	0
Year four, originated, current fiscal year, writeoff	0	0
Year five, originated, current fiscal year, writeoff	0	79
More than five years before current fiscal year, writeoff	1	28
Revolving loans	2	23
Revolving loans converted to term	0	0
Total	3	130
Write-downs from transfers to held-for-sale	0	0
Commercial | Automotive
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year, writeoff	0	0
Year two, originated, current fiscal year, writeoff	0	0
Year three, originated, current fiscal year, writeoff	0	0
Year four, originated, current fiscal year, writeoff	0	0
Year five, originated, current fiscal year, writeoff	0	0
More than five years before current fiscal year, writeoff	1	5
Revolving loans	2	19
Revolving loans converted to term	0	0
Total	$ 3	24
Commercial | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Year one, originated, current fiscal year, writeoff		0
Year two, originated, current fiscal year, writeoff		0
Year three, originated, current fiscal year, writeoff		0
Year four, originated, current fiscal year, writeoff		0
Year five, originated, current fiscal year, writeoff		79
More than five years before current fiscal year, writeoff		23
Revolving loans		4
Revolving loans converted to term		0
Total		$ 106

Finance Receivables and Loan_12

Finance Receivables and Loans, Net - Schedule of Loan Modifications (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) loan	Dec. 31, 2023 USD ($) loan	Dec. 31, 2022 USD ($)
Financing Receivable, Troubled Debt Restructuring
Trial modifications, term	3 months
Trial modifications, amount	$ 4	$ 5
Total	$ 636	$ 378
Percentage of total	0.50%	0.30%
Loans modified, commitment to lend	$ 39	$ 6	$ 61
Payment deferrals
Financing Receivable, Troubled Debt Restructuring
Total	2	36
Contractual maturity extensions
Financing Receivable, Troubled Debt Restructuring
Total	588	284
Principal forgiveness
Financing Receivable, Troubled Debt Restructuring
Total	5	13
Interest rate concessions
Financing Receivable, Troubled Debt Restructuring
Total	23	13
Combination
Financing Receivable, Troubled Debt Restructuring
Total	18	32
Consumer
Financing Receivable, Troubled Debt Restructuring
Total	444	296
Consumer | Current
Financing Receivable, Troubled Debt Restructuring
Total	332	247
Consumer | 30–59 days past due
Financing Receivable, Troubled Debt Restructuring
Total	70	29
Consumer | 60–89 days past due
Financing Receivable, Troubled Debt Restructuring
Total	27	8
Consumer | 90 or more days past due
Financing Receivable, Troubled Debt Restructuring
Total	15	12
Consumer | Payment deferrals
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Consumer | Contractual maturity extensions
Financing Receivable, Troubled Debt Restructuring
Total	420	238
Consumer | Principal forgiveness
Financing Receivable, Troubled Debt Restructuring
Total	5	13
Consumer | Interest rate concessions
Financing Receivable, Troubled Debt Restructuring
Total	16	13
Consumer | Combination
Financing Receivable, Troubled Debt Restructuring
Total	3	32
Consumer | Automotive
Financing Receivable, Troubled Debt Restructuring
Total	$ 425	$ 275
Number of loans redefaulted | loan	1,616	235
Amortized cost of loans redefaulted	$ 39	$ 5
Consumer | Automotive | Current
Financing Receivable, Troubled Debt Restructuring
Total	320	234
Consumer | Automotive | 30–59 days past due
Financing Receivable, Troubled Debt Restructuring
Total	68	27
Consumer | Automotive | 60–89 days past due
Financing Receivable, Troubled Debt Restructuring
Total	25	7
Consumer | Automotive | 90 or more days past due
Financing Receivable, Troubled Debt Restructuring
Total	12	7
Consumer | Automotive | Payment deferrals
Financing Receivable, Troubled Debt Restructuring
Total	$ 0	$ 0
Number of months extended/deferred	30 months	29 months
Consumer | Automotive | Contractual maturity extensions
Financing Receivable, Troubled Debt Restructuring
Total	$ 418	$ 234
Consumer | Automotive | Contractual maturity extensions | Current
Financing Receivable, Troubled Debt Restructuring
Total	318	202
Consumer | Automotive | Contractual maturity extensions | 30–59 days past due
Financing Receivable, Troubled Debt Restructuring
Total	68	24
Consumer | Automotive | Contractual maturity extensions | 60–89 days past due
Financing Receivable, Troubled Debt Restructuring
Total	25	7
Consumer | Automotive | Contractual maturity extensions | 90 or more days past due
Financing Receivable, Troubled Debt Restructuring
Total	7	1
Consumer | Automotive | Principal forgiveness
Financing Receivable, Troubled Debt Restructuring
Total	5	13
Principal forgiveness, amount forgiven	2	3
Consumer | Automotive | Principal forgiveness | Current
Financing Receivable, Troubled Debt Restructuring
Total	0	7
Consumer | Automotive | Principal forgiveness | 30–59 days past due
Financing Receivable, Troubled Debt Restructuring
Total	0	1
Consumer | Automotive | Principal forgiveness | 60–89 days past due
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Consumer | Automotive | Principal forgiveness | 90 or more days past due
Financing Receivable, Troubled Debt Restructuring
Total	5	5
Consumer | Automotive | Interest rate concessions
Financing Receivable, Troubled Debt Restructuring
Total	$ 0	$ 0
Interest rate concessions, initial rate	0%	0%
Interest rate concessions, revised rate	0%	0%
Consumer | Automotive | Combination
Financing Receivable, Troubled Debt Restructuring
Total	$ 2	$ 28
Interest rate concessions, initial rate	14.30%	10.30%
Interest rate concessions, revised rate	12%	9.50%
Payment extensions, initial term	72 months	74 months
Payment extensions, revised term	85 months	86 months
Consumer | Automotive | Combination | Current
Financing Receivable, Troubled Debt Restructuring
Total	$ 2	$ 25
Consumer | Automotive | Combination | 30–59 days past due
Financing Receivable, Troubled Debt Restructuring
Total	0	2
Consumer | Automotive | Combination | 60–89 days past due
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Consumer | Automotive | Combination | 90 or more days past due
Financing Receivable, Troubled Debt Restructuring
Total	0	1
Consumer | Consumer mortgage
Financing Receivable, Troubled Debt Restructuring
Total	3	$ 8
Number of loans redefaulted | loan		1
Amortized cost of loans redefaulted		$ 2
Consumer | Consumer mortgage | Current
Financing Receivable, Troubled Debt Restructuring
Total	2	6
Consumer | Consumer mortgage | 30–59 days past due
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Consumer | Consumer mortgage | 60–89 days past due
Financing Receivable, Troubled Debt Restructuring
Total	1	0
Consumer | Consumer mortgage | 90 or more days past due
Financing Receivable, Troubled Debt Restructuring
Total	0	2
Consumer | Consumer mortgage | Payment deferrals
Financing Receivable, Troubled Debt Restructuring
Total	$ 0	$ 0
Number of months extended/deferred	176 months	132 months
Consumer | Consumer mortgage | Contractual maturity extensions
Financing Receivable, Troubled Debt Restructuring
Total	$ 2	$ 4
Consumer | Consumer mortgage | Contractual maturity extensions | Current
Financing Receivable, Troubled Debt Restructuring
Total	1	4
Consumer | Consumer mortgage | Contractual maturity extensions | 30–59 days past due
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Consumer | Consumer mortgage | Contractual maturity extensions | 60–89 days past due
Financing Receivable, Troubled Debt Restructuring
Total	1	0
Consumer | Consumer mortgage | Contractual maturity extensions | 90 or more days past due
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Consumer | Consumer mortgage | Principal forgiveness
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Principal forgiveness, amount forgiven	0	0
Consumer | Consumer mortgage | Interest rate concessions
Financing Receivable, Troubled Debt Restructuring
Total	$ 0	$ 0
Interest rate concessions, initial rate	0%	0%
Interest rate concessions, revised rate	0%	0%
Consumer | Consumer mortgage | Combination
Financing Receivable, Troubled Debt Restructuring
Total	$ 1	$ 4
Number of months extended/deferred	325 months	207 months
Interest rate concessions, initial rate	4.10%	4.40%
Interest rate concessions, revised rate	3.10%	3.10%
Payment extensions, initial term	305 months	286 months
Payment extensions, revised term	449 months	442 months
Consumer | Consumer mortgage | Combination | Current
Financing Receivable, Troubled Debt Restructuring
Total	$ 1	$ 2
Consumer | Consumer mortgage | Combination | 30–59 days past due
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Consumer | Consumer mortgage | Combination | 60–89 days past due
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Consumer | Consumer mortgage | Combination | 90 or more days past due
Financing Receivable, Troubled Debt Restructuring
Total	0	2
Consumer | Other
Financing Receivable, Troubled Debt Restructuring
Total	16	13
Consumer | Other | Current
Financing Receivable, Troubled Debt Restructuring
Total	10	7
Consumer | Other | 30–59 days past due
Financing Receivable, Troubled Debt Restructuring
Total	2	2
Consumer | Other | 60–89 days past due
Financing Receivable, Troubled Debt Restructuring
Total	1	1
Consumer | Other | 90 or more days past due
Financing Receivable, Troubled Debt Restructuring
Total	3	3
Consumer | Other | Payment deferrals
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Consumer | Other | Contractual maturity extensions
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Consumer | Other | Principal forgiveness
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Principal forgiveness, amount forgiven	2	0
Consumer | Other | Interest rate concessions
Financing Receivable, Troubled Debt Restructuring
Total	$ 16	$ 13
Interest rate concessions, initial rate	29.60%	30%
Interest rate concessions, revised rate	7.30%	8%
Consumer | Other | Combination
Financing Receivable, Troubled Debt Restructuring
Total	$ 0	$ 0
Interest rate concessions, initial rate	0%	0%
Interest rate concessions, revised rate	0%	0%
Consumer | Credit Card
Financing Receivable, Troubled Debt Restructuring
Total	$ 16	$ 13
Consumer | Credit Card | Payment deferrals
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Consumer | Credit Card | Contractual maturity extensions
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Consumer | Credit Card | Principal forgiveness
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Principal forgiveness, amount forgiven	2	0
Consumer | Credit Card | Interest rate concessions
Financing Receivable, Troubled Debt Restructuring
Total	$ 16	$ 13
Interest rate concessions, initial rate	29.60%	30%
Interest rate concessions, revised rate	7.30%	8%
Consumer | Credit Card | Interest rate concessions | Current
Financing Receivable, Troubled Debt Restructuring
Total	$ 10	$ 7
Consumer | Credit Card | Interest rate concessions | 30–59 days past due
Financing Receivable, Troubled Debt Restructuring
Total	2	2
Consumer | Credit Card | Interest rate concessions | 60–89 days past due
Financing Receivable, Troubled Debt Restructuring
Total	1	1
Consumer | Credit Card | Interest rate concessions | 90 or more days past due
Financing Receivable, Troubled Debt Restructuring
Total	3	3
Consumer | Credit Card | Combination
Financing Receivable, Troubled Debt Restructuring
Total	$ 0	$ 0
Interest rate concessions, initial rate	0%	0%
Interest rate concessions, revised rate	0%	0%
Commercial
Financing Receivable, Troubled Debt Restructuring
Total	$ 192	$ 82
Commercial | Pass
Financing Receivable, Troubled Debt Restructuring
Total	113	34
Commercial | Special mention
Financing Receivable, Troubled Debt Restructuring
Total	0	7
Commercial | Substandard
Financing Receivable, Troubled Debt Restructuring
Total	71	5
Commercial | Doubtful
Financing Receivable, Troubled Debt Restructuring
Total	8	36
Commercial | Payment deferrals
Financing Receivable, Troubled Debt Restructuring
Total	$ 2	$ 36
Number of months extended/deferred	36 months	15 months
Commercial | Contractual maturity extensions
Financing Receivable, Troubled Debt Restructuring
Total	$ 168	$ 46
Commercial | Principal forgiveness
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Principal forgiveness, amount forgiven	0	0
Commercial | Interest rate concessions
Financing Receivable, Troubled Debt Restructuring
Total	$ 7	$ 0
Interest rate concessions, initial rate	5%	0%
Interest rate concessions, revised rate	3%	0%
Commercial | Combination
Financing Receivable, Troubled Debt Restructuring
Total	$ 15	$ 0
Interest rate concessions, initial rate	5.70%	0%
Interest rate concessions, revised rate	4.30%	0%
Payment extensions, initial term	7 months
Payment extensions, revised term	61 months
Commercial | Automotive
Financing Receivable, Troubled Debt Restructuring
Total	$ 9
Commercial | Automotive | Payment deferrals
Financing Receivable, Troubled Debt Restructuring
Total	$ 2
Number of months extended/deferred	6 months
Commercial | Automotive | Payment deferrals | Pass
Financing Receivable, Troubled Debt Restructuring
Total	$ 0
Commercial | Automotive | Payment deferrals | Special mention
Financing Receivable, Troubled Debt Restructuring
Total	0
Commercial | Automotive | Payment deferrals | Substandard
Financing Receivable, Troubled Debt Restructuring
Total	2
Commercial | Automotive | Payment deferrals | Doubtful
Financing Receivable, Troubled Debt Restructuring
Total	0
Commercial | Automotive | Contractual maturity extensions
Financing Receivable, Troubled Debt Restructuring
Total	0
Commercial | Automotive | Principal forgiveness
Financing Receivable, Troubled Debt Restructuring
Total	0
Principal forgiveness, amount forgiven	0
Commercial | Automotive | Interest rate concessions
Financing Receivable, Troubled Debt Restructuring
Total	$ 7
Interest rate concessions, initial rate	5%
Interest rate concessions, revised rate	3%
Commercial | Automotive | Interest rate concessions | Pass
Financing Receivable, Troubled Debt Restructuring
Total	$ 0
Commercial | Automotive | Interest rate concessions | Special mention
Financing Receivable, Troubled Debt Restructuring
Total	0
Commercial | Automotive | Interest rate concessions | Substandard
Financing Receivable, Troubled Debt Restructuring
Total	0
Commercial | Automotive | Interest rate concessions | Doubtful
Financing Receivable, Troubled Debt Restructuring
Total	7
Commercial | Automotive | Combination
Financing Receivable, Troubled Debt Restructuring
Total	$ 0
Interest rate concessions, initial rate	0%
Interest rate concessions, revised rate	0%
Commercial | Other
Financing Receivable, Troubled Debt Restructuring
Total	$ 182	$ 82
Commercial | Other | Payment deferrals
Financing Receivable, Troubled Debt Restructuring
Total	$ 0	$ 36
Number of months extended/deferred	37 months	15 months
Commercial | Other | Payment deferrals | Pass
Financing Receivable, Troubled Debt Restructuring
Total		$ 0
Commercial | Other | Payment deferrals | Special mention
Financing Receivable, Troubled Debt Restructuring
Total		0
Commercial | Other | Payment deferrals | Substandard
Financing Receivable, Troubled Debt Restructuring
Total		0
Commercial | Other | Payment deferrals | Doubtful
Financing Receivable, Troubled Debt Restructuring
Total		36
Commercial | Other | Contractual maturity extensions
Financing Receivable, Troubled Debt Restructuring
Total	$ 168	$ 46
Commercial | Other | Contractual maturity extensions | Corporate Finance operations
Financing Receivable, Troubled Debt Restructuring
Number of months extended/deferred		3 months
Commercial | Other | Contractual maturity extensions | Pass
Financing Receivable, Troubled Debt Restructuring
Total	113	$ 34
Commercial | Other | Contractual maturity extensions | Special mention
Financing Receivable, Troubled Debt Restructuring
Total	0	7
Commercial | Other | Contractual maturity extensions | Substandard
Financing Receivable, Troubled Debt Restructuring
Total	55	5
Commercial | Other | Contractual maturity extensions | Doubtful
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Commercial | Other | Principal forgiveness
Financing Receivable, Troubled Debt Restructuring
Total	0	0
Principal forgiveness, amount forgiven	0	0
Commercial | Other | Interest rate concessions
Financing Receivable, Troubled Debt Restructuring
Total	$ 0	$ 0
Interest rate concessions, initial rate	0%	0%
Interest rate concessions, revised rate	0%	0%
Commercial | Other | Combination
Financing Receivable, Troubled Debt Restructuring
Total	$ 14	$ 0
Interest rate concessions, initial rate	5.50%	0%
Interest rate concessions, revised rate	4.30%	0%
Payment extensions, initial term	4 months
Payment extensions, revised term	60 months
Commercial | Other | Combination | Pass
Financing Receivable, Troubled Debt Restructuring
Total	$ 0
Commercial | Other | Combination | Special mention
Financing Receivable, Troubled Debt Restructuring
Total	0
Commercial | Other | Combination | Substandard
Financing Receivable, Troubled Debt Restructuring
Total	14
Commercial | Other | Combination | Doubtful
Financing Receivable, Troubled Debt Restructuring
Total	0
Commercial | Commercial real estate
Financing Receivable, Troubled Debt Restructuring
Total	1
Commercial | Commercial real estate | Payment deferrals
Financing Receivable, Troubled Debt Restructuring
Total	0
Commercial | Commercial real estate | Contractual maturity extensions
Financing Receivable, Troubled Debt Restructuring
Total	0
Commercial | Commercial real estate | Principal forgiveness
Financing Receivable, Troubled Debt Restructuring
Total	0
Principal forgiveness, amount forgiven	0
Commercial | Commercial real estate | Interest rate concessions
Financing Receivable, Troubled Debt Restructuring
Total	$ 0
Interest rate concessions, initial rate	0%
Interest rate concessions, revised rate	0%
Commercial | Commercial real estate | Combination
Financing Receivable, Troubled Debt Restructuring
Total	$ 1
Interest rate concessions, initial rate	11%
Interest rate concessions, revised rate	6%
Payment extensions, initial term	84 months
Payment extensions, revised term	93 months
Commercial | Commercial real estate | Combination | Pass
Financing Receivable, Troubled Debt Restructuring
Total	$ 0
Commercial | Commercial real estate | Combination | Special mention
Financing Receivable, Troubled Debt Restructuring
Total	0
Commercial | Commercial real estate | Combination | Substandard
Financing Receivable, Troubled Debt Restructuring
Total	0
Commercial | Commercial real estate | Combination | Doubtful
Financing Receivable, Troubled Debt Restructuring
Total	$ 1

Finance Receivables and Loan_13

Finance Receivables and Loans, Net - Schedule of Troubled Debt Restructurings (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) loan	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Financing Receivable, Troubled Debt Restructuring
Financing receivable, modifications, gross carrying value	$ 2,400
Loans modified, commitment to lend	$ 61	$ 39	$ 6
Number of loans | loan	52,662
Pre-modification amortized cost basis	$ 1,310
Post-modification amortized cost basis	$ 1,289
Consumer
Financing Receivable, Troubled Debt Restructuring
Number of loans | loan	52,657
Pre-modification amortized cost basis	$ 849
Post-modification amortized cost basis	$ 823
Consumer | Automotive
Financing Receivable, Troubled Debt Restructuring
Number of loans | loan	49,773
Pre-modification amortized cost basis	$ 831
Post-modification amortized cost basis	$ 805
Consumer | Consumer mortgage
Financing Receivable, Troubled Debt Restructuring
Number of loans | loan	31
Pre-modification amortized cost basis	$ 13
Post-modification amortized cost basis	$ 13
Consumer | Other
Financing Receivable, Troubled Debt Restructuring
Number of loans | loan	2,853
Pre-modification amortized cost basis	$ 5
Post-modification amortized cost basis	$ 5
Consumer | Credit Card
Financing Receivable, Troubled Debt Restructuring
Number of loans | loan	2,853
Pre-modification amortized cost basis	$ 5
Post-modification amortized cost basis	$ 5
Commercial
Financing Receivable, Troubled Debt Restructuring
Number of loans | loan	5
Pre-modification amortized cost basis	$ 461
Post-modification amortized cost basis	$ 466
Commercial | Other
Financing Receivable, Troubled Debt Restructuring
Number of loans | loan	5
Pre-modification amortized cost basis	$ 461
Post-modification amortized cost basis	$ 466

Finance Receivables and Loan_14

Finance Receivables and Loans, Net - Schedule of Finance Receivables and Loans Redefaulted During the Period (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) loan
Accounts, Notes, Loans and Financing Receivable
Number of loans | loan	9,689
Amortized cost	$ 146
Charge-off  amount	$ 95
Consumer
Accounts, Notes, Loans and Financing Receivable
Number of loans | loan	9,688
Amortized cost	$ 145
Charge-off  amount	$ 64
Consumer | Automotive
Accounts, Notes, Loans and Financing Receivable
Number of loans | loan	9,227
Amortized cost	$ 143
Charge-off  amount	$ 64
Consumer | Consumer mortgage
Accounts, Notes, Loans and Financing Receivable
Number of loans | loan	4
Amortized cost	$ 2
Charge-off  amount	$ 0
Consumer | Other
Accounts, Notes, Loans and Financing Receivable
Number of loans | loan	457
Amortized cost	$ 0
Charge-off  amount	$ 0
Consumer | Credit Card
Accounts, Notes, Loans and Financing Receivable
Number of loans | loan	457
Amortized cost	$ 0
Charge-off  amount	$ 0
Commercial
Accounts, Notes, Loans and Financing Receivable
Number of loans | loan	1
Amortized cost	$ 1
Charge-off  amount	$ 31
Commercial | Other
Accounts, Notes, Loans and Financing Receivable
Number of loans | loan	1
Amortized cost	$ 1
Charge-off  amount	$ 31

Finance Receivables and Loan_15

Finance Receivables and Loans, Net - Schedule of Consumer Concentration Risk (Details) - Consumer - Financing Receivable - Geographic Concentration Risk	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	26%
Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage		26.40%
Automotive
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	100%	100%
Automotive | California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	8.50%	8.50%
Automotive | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	13.50%	13.70%
Automotive | Florida
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	9.30%	9.50%
Automotive | North Carolina
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	4.60%	4.30%
Automotive | Pennsylvania
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	4.50%	4.50%
Automotive | Georgia
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	4%	4.10%
Automotive | New York
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	3.80%	3.70%
Automotive | New Jersey
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	3.30%	3.20%
Automotive | Illinois
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	3.20%	3.30%
Automotive | Ohio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	3.30%	3.40%
Automotive | Other United States
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	42%	41.80%
Consumer mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	100%	100%
Consumer mortgage | California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	39.90%	39.20%
Consumer mortgage | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	7.20%	7.30%
Consumer mortgage | Florida
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	6.20%	6.50%
Consumer mortgage | North Carolina
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	1.90%	1.90%
Consumer mortgage | Pennsylvania
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	2.10%	2.10%
Consumer mortgage | Georgia
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	2.90%	2.90%
Consumer mortgage | New York
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	1.90%	1.90%
Consumer mortgage | New Jersey
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	2.50%	2.40%
Consumer mortgage | Illinois
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	2.80%	2.80%
Consumer mortgage | Ohio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	0.40%	0.40%
Consumer mortgage | Other United States
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	32.20%	32.60%
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	100%	100%
Other | California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	9.30%	9.40%
Other | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	7.80%	7.60%
Other | Florida
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	9.10%	9%
Other | North Carolina
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	3%	2.90%
Other | Pennsylvania
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	4.10%	4.20%
Other | Georgia
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	3.70%	3.70%
Other | New York
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	5.40%	5.40%
Other | New Jersey
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	3.50%	3.70%
Other | Illinois
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	4.60%	4.60%
Other | Ohio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	4.50%	4.50%
Other | Other United States
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	45%	45%

Finance Receivables and Loan_16

Finance Receivables and Loans, Net - Schedule of Commercial Concentration Risk (Details) - Commercial - Commercial real estate - Geographic Concentration Risk - Financing Receivable	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	100%	100%
Florida
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	16%	17.60%
Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	14.10%	13.60%
California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	6.60%	7.90%
Ohio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	5.60%	5.90%
New York
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	5.40%	4.50%
North Carolina
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	4.80%	5%
Michigan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	4.10%	5.40%
Georgia
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	3.30%	3%
Missouri
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	2.90%	2.80%
Illinois
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	2.60%	2.60%
Other United States
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	34.60%	31.70%

Finance Receivables and Loan_17

Finance Receivables and Loans, Net - Schedule of Commercial Criticized Risk Exposure (Details) - Commercial - Industry Concentration Risk - Financing Receivable	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	100%	100%
Automotive
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	64.40%	54%
Electronics
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	12.80%	13.40%
Services
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	9%	12.80%
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	13.80%	19.80%

Leasing - Ally as the Lessee (D

Leasing - Ally as the Lessee (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Lessee, Lease, Description [Line Items]
Noncancelable lease term	367 days
Lease extension, maximum	48 months
Cash paid for amounts included in the measurement of lease liabilities	$ 35	$ 33
Right-of-use asset obtained in exchange for operating lease liability	$ 34	$ 10
Operating lease, weighted-average remaining lease term	3 years	4 years
Operating lease, weighted average discount rate	3.32%	2.85%
Minimum
Lessee, Lease, Description [Line Items]
Operating lease remaining lease term	6 months
Maximum
Lessee, Lease, Description [Line Items]
Operating lease remaining lease term	6 years

Leasing - Schedule of Lessee, O

Leasing - Schedule of Lessee, Operating Lease, Liability, Maturity (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
2025	$ 38
2026	35
2027	25
2028	17
2029	1
2030 and thereafter	1
Total undiscounted cash flows	117
Difference between undiscounted cash flows and discounted cash flows	(6)
Total lease liability	$ 111	$ 113

Leasing - Schedule of Lease, Co

Leasing - Schedule of Lease, Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease expense	$ 30	$ 29	$ 33
Variable lease expense	4	5	4
Total lease expense, net	$ 34	$ 34	$ 37

Leasing - Schedule of Ally as t

Leasing - Schedule of Ally as the Lessor (Details) - USD ($) $ in Millions	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Vehicles	$ 9,519				$ 11,015
Accumulated depreciation	(1,528)				(1,930)
Investment in operating leases, net	$ 7,991	$ 7,967	$ 8,126	$ 8,582	9,085	$ 9,509	$ 9,890	$ 10,218
Minimum
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Lessor, term of contract	24 months
Maximum
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Lessor, term of contract	60 months
Vehicles
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Residual value of leased asset	$ 1,900				12
Vehicles | 15% Of Manufacturer Suggested Retail Price
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Residual value of leased asset	$ 1				$ 12
Residual value guarantee, percentage	15%				15%
Vehicles | 50% Of Contract Residual Value
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Residual value of leased asset	$ 1,900
Residual value guarantee, percentage	50%

Leasing - Schedule of Lessor, O

Leasing - Schedule of Lessor, Operating Lease, Payments to be Received, Maturity (Details) $ in Millions	Dec. 31, 2024 USD ($)
Leases [Abstract]
2025	$ 1,269
2026	881
2027	369
2028	35
2029	3
Total lease payments from operating leases	$ 2,557

Leasing - Schedule of Depreciat

Leasing - Schedule of Depreciation Expense on Operating Lease Assets (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease revenue									$ 1,355	$ 1,550	$ 1,596
Depreciation expense on operating lease assets (excluding remarketing gains)									868	1,051	1,084
Remarketing gains, net									(132)	(211)	(170)
Net depreciation expense on operating lease assets	$ 220	$ 169	$ 155	$ 192	$ 213	$ 206	$ 196	$ 225	736	840	914
Variable lease payments, excessive wear and tear									$ 21	$ 9	$ 7

Leasing - Schedule of Sales-typ

Leasing - Schedule of Sales-type and Direct Financing Leases, Lease Receivable, Maturity (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Direct financing lease, net investment in lease	$ 496	$ 537
Direct financing lease, present value of lease payments recorded as lease receivable	496	531
Direct financing lease, unguaranteed residual asset		6
Direct financing lease, interest income	46	$ 40
2025	188
2026	159
2027	122
2028	64
2029	32
2030 and thereafter	11
Total undiscounted cash flows	576
Difference between undiscounted cash flows and discounted cash flows	(80)
Present value of lease payments recorded as lease receivable	$ 496

Securitizations and Variable _3

Securitizations and Variable Interest Entities - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Securitizations And Variable Interest Entities [Abstract]
Gain (loss) on sales of financial assets	$ 3	$ 1	$ 1

Securitizations and Variable _4

Securitizations and Variable Interest Entities - Schedule of Variable Interest Entities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Carrying value of total assets	$ 191,836				$ 196,329				$ 191,826
Carrying value of total liabilities	177,933				182,626
Assets sold to nonconsolidated VIEs	2,971				2,639
Maximum exposure to loss in nonconsolidated VIEs	6,545				5,458
Non-recourse debt	17,495				17,570
Held-to-maturity securities	4,346				4,680
Other assets	10,660	$ 9,947	$ 9,949	$ 9,420	9,418	$ 9,612	$ 9,155	$ 9,142
Equity securities	871				810
On‑balance sheet variable interest entities
Variable Interest Entity [Line Items]
Carrying value of total assets	4,666				7,075
Carrying value of total liabilities	1,565				1,513
Non-recourse debt	1,561				1,509
Other assets	333				461
On‑balance sheet variable interest entities | Consumer | Automotive
Variable Interest Entity [Line Items]
Carrying value of total assets	12,821				16,329
Carrying value of total liabilities	1,683				1,614
Assets sold to nonconsolidated VIEs	0				0
Maximum exposure to loss in nonconsolidated VIEs	0				0
Assets held-in-trust	8,200				9,300
On‑balance sheet variable interest entities | Consumer | Automotive | Nonrecourse
Variable Interest Entity [Line Items]
Non-recourse debt	118				100
Off-balance sheet variable interest entities
Variable Interest Entity [Line Items]
Carrying value of total assets	15,681				18,926
Carrying value of total liabilities	2,705				2,588
Off-balance sheet variable interest entities | Consumer | Automotive
Variable Interest Entity [Line Items]
Carrying value of total assets	92				81
Carrying value of total liabilities	0				0
Assets sold to nonconsolidated VIEs	2,885				2,514
Maximum exposure to loss in nonconsolidated VIEs	2,977				2,595
Held-to-maturity securities	88				78
Other assets	4				3
Off-balance sheet variable interest entities | Consumer | Other
Variable Interest Entity [Line Items]
Carrying value of total assets	0				0
Carrying value of total liabilities	0				0
Assets sold to nonconsolidated VIEs	86				125
Maximum exposure to loss in nonconsolidated VIEs	86				125
Off-balance sheet variable interest entities | Commercial | Other
Variable Interest Entity [Line Items]
Carrying value of total assets	2,768				2,516
Carrying value of total liabilities	1,022				974
Assets sold to nonconsolidated VIEs	0				0
Maximum exposure to loss in nonconsolidated VIEs	3,482				2,738
Equity securities	$ 50				$ 44

Securitizations and Variable _5

Securitizations and Variable Interest Entities - Schedule of Cash Flows with Nonconsolidated Special-Purpose Entities (Details) - Off-balance sheet variable interest entities - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash Flow Received and Paid to Nonconsolidated Securitization Entities [Line Items]
Total	$ 1,761	$ 1,280	$ 389
Automotive | Consumer
Cash Flow Received and Paid to Nonconsolidated Securitization Entities [Line Items]
Cash proceeds from transfers completed during the period	1,594	1,131	238
Servicing fees	58	19	1
Cash flows received on retained interests in securitization entities	54	4	0
Other cash flows	2	1	0
Cash disbursements for repurchases during the period	1	0	0
Consumer other | Consumer
Cash Flow Received and Paid to Nonconsolidated Securitization Entities [Line Items]
Cash proceeds from transfers completed during the period	46	117	137
Servicing fees	$ 6	$ 8	$ 13

Securitizations and Variable _6

Securitizations and Variable Interest Entities - Schedule of Quantitative Information and Net Credit Losses about Securitized and Other Financial Assets Managed Together (Details) - Off-balance sheet variable interest entities - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Derecognized Assets, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Total amount	$ 2,971	$ 2,639
Amount 60 days or more past due	115	72
Net credit losses	135	60
Off-balance-sheet securitization entities | Automotive | Consumer
Derecognized Assets, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Total amount	1,730	1,558
Amount 60 days or more past due	22	11
Net credit losses	20	2
Whole-loan sales | Automotive | Consumer
Derecognized Assets, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Total amount	1,155	956
Amount 60 days or more past due	83	44
Net credit losses	79	27
Whole-loan sales | Consumer other | Consumer
Derecognized Assets, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Total amount	86	125
Amount 60 days or more past due	10	17
Net credit losses	$ 36	$ 31

Premiums Receivable and Other_3

Premiums Receivable and Other Insurance Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Premiums Receivable Disclosure [Abstract]
Prepaid reinsurance premiums	$ 594	$ 580
Reinsurance recoverable on unpaid losses	60	66
Reinsurance recoverable on paid losses	44	38
Premiums receivable	206	154
Deferred policy and service contract acquisition costs	1,886	1,911
Total premiums receivable and other insurance assets	$ 2,790	$ 2,749

Other Assets - Schedule of Othe

Other Assets - Schedule of Other Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Other Assets [Abstract]
Property and equipment at cost	$ 2,226				$ 2,153
Accumulated depreciation	(973)				(871)
Net property and equipment	1,253				1,282
Proportional amortization investments	2,131				1,866
Net deferred tax assets	1,916				1,247
Accrued interest, fees, and rent receivables	929				935
Nonmarketable equity investments	789				886
Restricted cash and cash equivalents	788				87
Equity-method investments	632				651
Goodwill	551				669				$ 822
Other accounts receivable	312				189
Restricted cash held for securitization trusts	300				407
Operating lease right-of-use assets	92				90
Net intangible assets	54				73
Other assets	913				1,036
Total other assets	$ 10,660	$ 9,947	$ 9,949	$ 9,420	$ 9,418	$ 9,612	$ 9,155	$ 9,142
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Total other assets				Total other assets

Other Assets - Schedule of Prop

Other Assets - Schedule of Proportional Amortization Investment (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other Assets [Abstract]
Tax credits and other tax benefits from proportional amortization investments	$ 251,000,000	$ 200,000,000	$ 177,000,000
Investment amortization expense recognized as a component of income tax expense	203,000,000	157,000,000	147,000,000
Net benefit from proportional amortization investments	48,000,000	43,000,000	30,000,000
Investment program, proportional amortization method, elected, impairment loss	$ 0	$ 0	$ 0
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization, Statement of Income or Comprehensive Income [Extensible Enumeration]	Income tax expense from continuing operations	Income tax expense from continuing operations	Income tax expense from continuing operations
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, after Amortization, Statement of Income or Comprehensive Income [Extensible Enumeration]	Income tax expense from continuing operations	Income tax expense from continuing operations	Income tax expense from continuing operations
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration]	Income tax expense from continuing operations	Income tax expense from continuing operations	Income tax expense from continuing operations
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization, Statement of Cash Flows [Extensible Enumeration]	Deferred income taxes, Increase (Decrease) in Other Operating Assets, Other liabilities	Deferred income taxes, Increase (Decrease) in Other Operating Assets, Other liabilities	Deferred income taxes, Increase (Decrease) in Other Operating Assets, Other liabilities
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Cash Flows [Extensible Enumeration]	Deferred income taxes, Increase (Decrease) in Other Operating Assets, Other liabilities	Deferred income taxes, Increase (Decrease) in Other Operating Assets, Other liabilities	Deferred income taxes, Increase (Decrease) in Other Operating Assets, Other liabilities
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, after Amortization, Statement of Cash Flows [Extensible Enumeration]	Deferred income taxes, Increase (Decrease) in Other Operating Assets, Other liabilities	Deferred income taxes, Increase (Decrease) in Other Operating Assets, Other liabilities	Deferred income taxes, Increase (Decrease) in Other Operating Assets, Other liabilities

Other Assets - Narrative (Detai

Other Assets - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Line Items]
Proportional amortization investments	$ 2,131	$ 1,866
Unfunded commitments for proportional amortization investments	$ 1,019	973
Unfunded commitments, period to be paid	5 years
Loss on nonmarketable equity investments, net	$ 6	10	$ 132
Goodwill impairment	118	149	$ 0
Goodwill, transfers		4
Corporate and Other
Goodwill [Line Items]
Goodwill impairment	118	149
Goodwill, transfers		4
Corporate and Other | Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Ally Credit Card
Goodwill [Line Items]
Goodwill impairment	$ 118
Corporate and Other | Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Ally Lending
Goodwill [Line Items]
Goodwill impairment		$ 149

Other Assets - Schedule of Equi

Other Assets - Schedule of Equity Securities without Readily Determinable Fair Value (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Other Assets [Abstract]
FRB stock	$ 440,000,000	$ 392,000,000
FHLB stock	258,000,000	392,000,000
Equity investments without a readily determinable fair value
Cost basis	74,000,000	74,000,000
Upward adjustments	53,000,000	51,000,000
Downward adjustments (including impairment)	(36,000,000)	(23,000,000)
Carrying amount, equity investments without a readily determinable fair value	91,000,000	102,000,000
Nonmarketable equity investments	789,000,000	886,000,000
Upward adjustments	2,000,000	8,000,000
Downward adjustments (including impairment)	(15,000,000)	(17,000,000)
Impairment of FHLB and FRB stock	$ 0	$ 0

Other Assets - Schedule of Sche

Other Assets - Schedule of Schedule of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Roll Forward]
Goodwill beginning balance	$ 669	$ 822
Goodwill impairment	(118)	(149)	$ 0
Transfer to assets of operations held-for-sale		(4)
Goodwill ending balance	551	669	822
Operating Segments | Automotive Finance operations
Goodwill [Roll Forward]
Goodwill beginning balance	20	20
Goodwill impairment	0	0
Transfer to assets of operations held-for-sale		0
Goodwill ending balance	20	20	20
Operating Segments | Insurance operations
Goodwill [Roll Forward]
Goodwill beginning balance	27	27
Goodwill impairment	0	0
Transfer to assets of operations held-for-sale		0
Goodwill ending balance	27	27	27
Corporate and Other
Goodwill [Roll Forward]
Goodwill beginning balance	622	775
Goodwill impairment	(118)	(149)
Transfer to assets of operations held-for-sale		(4)
Goodwill ending balance	504	622	$ 775
Ally Credit Card | Corporate and Other
Goodwill [Roll Forward]
Goodwill beginning balance	479
Goodwill ending balance	361	479
Ally Invest | Corporate and Other
Goodwill [Roll Forward]
Goodwill beginning balance	143
Goodwill ending balance	$ 143	$ 143

Other Assets - Schedule of Inta

Other Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ (131)	$ (112)
Net carrying value	54
Total intangible assets, gross	185	185
Net intangible assets	54	73
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Ally Lending
Finite-Lived Intangible Assets [Line Items]
Gross intangible assets		22
Accumulated amortization		22
Technology
Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	117	117
Accumulated amortization	(77)	(64)
Net carrying value	40	53
Customer lists
Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	41	41
Accumulated amortization	(41)	(39)
Net carrying value	0	2
Purchased credit card relationships
Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	25	25
Accumulated amortization	(11)	(7)
Net carrying value	14	18
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	2	2
Accumulated amortization	(2)	(2)
Net carrying value	$ 0	$ 0

Other Assets - Schedule of Futu

Other Assets - Schedule of Future Amortization Expense of Intangible Assets (Details) $ in Millions	Dec. 31, 2024 USD ($)
Other Assets [Abstract]
2025	$ 14
2026	14
2027	13
2028	13
Net carrying value	$ 54

Deposit Liabilities - Schedule

Deposit Liabilities - Schedule of Deposit Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deposits [Abstract]
Noninterest-bearing deposits	$ 131	$ 139
Interest-bearing deposits
Savings, money market, and spending accounts	104,201	99,340
Certificates of deposit	47,242	55,187
Total deposit liabilities	151,574	154,666
Certificates of deposit, in excess of $250,000 federal insurance limits	$ 6,800	$ 7,700

Deposit Liabilities - Schedul_2

Deposit Liabilities - Schedule of Time Deposit Maturities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deposits [Abstract]
Due in 2025	$ 37,228
Due in 2026	5,487
Due in 2027	2,285
Due in 2028	1,582
Due in 2029	660
Total certificates of deposit	47,242	$ 55,187
Certificates of deposit, uninsured	$ 4,800

Debt - Schedule of Short-term D

Debt - Schedule of Short-term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Short-term Debt [Line Items]
Federal Home Loan Bank	$ 1,625	$ 2,550
Securities sold under agreements to repurchase	0	747
Total short-term borrowings	$ 1,625	$ 3,297
Weighted average interest rate	4.70%	5.60%
Cash collateral received		$ 6
Non-cash collateral received		1
Unsecured debt
Short-term Debt [Line Items]
Federal Home Loan Bank	$ 0	0
Securities sold under agreements to repurchase	0	0
Total short-term borrowings	0	0
Secured debt
Short-term Debt [Line Items]
Federal Home Loan Bank	1,625	2,550
Securities sold under agreements to repurchase	0	747
Total short-term borrowings	$ 1,625	$ 3,297

Debt - Schedule of Long-term De

Debt - Schedule of Long-term Debt Portfolio (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Total long-term debt	$ 17,495	$ 17,570
Subordinated debt	2,000	1,500
Secured debt	8,058	10,443
Unsecured debt
Debt Instrument [Line Items]
Fixed rate	10,974	10,327
Hedge basis adjustments	88	97
Total long-term debt	$ 11,062	$ 10,424
Weighted average stated interest rate	6.25%	6.03%
Unsecured debt | Minimum
Debt Instrument [Line Items]
Interest rate	1.15%	0.60%
Unsecured debt | Maximum
Debt Instrument [Line Items]
Interest rate	8%	8%
Secured debt
Debt Instrument [Line Items]
Fixed rate	$ 6,358	$ 7,031
Hedge basis adjustments		2
Variable rate	75	113
Total long-term debt	$ 6,433	$ 7,146
Weighted average stated interest rate	4.32%	3.31%
Variable interest entity debt	$ 1,600	$ 1,500
Secured debt | Minimum
Debt Instrument [Line Items]
Interest rate	1.96%	0.89%
Secured debt | Maximum
Debt Instrument [Line Items]
Interest rate	12.75%	5.29%
Federal Home Loan Bank advances
Debt Instrument [Line Items]
Secured debt	$ 4,200	$ 5,600

Debt - Schedule of Long-term _2

Debt - Schedule of Long-term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt, due within one year	$ 4,819	$ 4,340
Long-term debt, due after one year	12,676	13,230
Total long-term debt	17,495	17,570
Unsecured debt
Debt Instrument [Line Items]
Long-term debt, due within one year	2,408	1,409
Long-term debt, due after one year	8,654	9,015
Total long-term debt	11,062	10,424
Secured debt
Debt Instrument [Line Items]
Long-term debt, due within one year	2,411	2,931
Long-term debt, due after one year	4,022	4,215
Total long-term debt	$ 6,433	$ 7,146

Debt - Scheduled Remaining Matu

Debt - Scheduled Remaining Maturity of Long-term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt, maturities, repayments of principal in year one	$ 4,818
Long-term debt, maturities, repayments of principal in year two	2,228
Long-term debt, maturities, repayments of principal in year three	2,935
Long-term debt, maturities, repayments of principal in year four	1,157
Long-term debt, maturities, repayments of principal in year five	945
Long-term debt, maturities, repayments of principal after year five	5,412
Total long-term debt	17,495	$ 17,570
Unsecured debt
Debt Instrument [Line Items]
Long-term debt, maturities, repayments of principal in year one	2,408
Long-term debt, maturities, repayments of principal in year two	69
Long-term debt, maturities, repayments of principal in year three	1,528
Long-term debt, maturities, repayments of principal in year four	758
Long-term debt, maturities, repayments of principal in year five	906
Long-term debt, maturities, repayments of principal after year five	5,393
Total long-term debt	11,062	10,424
Secured debt
Debt Instrument [Line Items]
Total long-term debt	6,433	$ 7,146
Long-term debt | Unsecured debt
Debt Instrument [Line Items]
Long-term debt, maturities, repayments of principal in year one	2,482
Long-term debt, maturities, repayments of principal in year two	151
Long-term debt, maturities, repayments of principal in year three	1,622
Long-term debt, maturities, repayments of principal in year four	865
Long-term debt, maturities, repayments of principal in year five	1,029
Long-term debt, maturities, repayments of principal after year five	5,676
Total long-term debt	11,825
Long-term debt | Secured debt
Debt Instrument [Line Items]
Long-term debt, maturities, repayments of principal in year one	2,410
Long-term debt, maturities, repayments of principal in year two	2,159
Long-term debt, maturities, repayments of principal in year three	1,407
Long-term debt, maturities, repayments of principal in year four	399
Long-term debt, maturities, repayments of principal in year five	39
Long-term debt, maturities, repayments of principal after year five	19
Total long-term debt	6,433
Original issue discount | Unsecured debt
Debt Instrument [Line Items]
Debt instrument, unamortized discount	(763)
Original issue discount | Unsecured debt | 2025
Debt Instrument [Line Items]
Debt instrument, unamortized discount, current	(74)
Original issue discount | Unsecured debt | 2026
Debt Instrument [Line Items]
Debt instrument, unamortized discount, noncurrent	(82)
Original issue discount | Unsecured debt | 2027
Debt Instrument [Line Items]
Debt instrument, unamortized discount, noncurrent	(94)
Original issue discount | Unsecured debt | 2028
Debt Instrument [Line Items]
Debt instrument, unamortized discount, noncurrent	(107)
Original issue discount | Unsecured debt | 2029
Debt Instrument [Line Items]
Debt instrument, unamortized discount, noncurrent	(123)
Original issue discount | Unsecured debt | 2030 and thereafter
Debt Instrument [Line Items]
Debt instrument, unamortized discount, noncurrent	$ (283)

Debt - Schedule of Pledged Asse

Debt - Schedule of Pledged Assets Related to Secured Borrowings and Repurchase Agreement (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Pledged Assets related to secured borrowings [Line Items]
Total assets restricted as collateral	$ 65,497	$ 69,512
Secured debt	8,058	10,443
Amortized cost	26,810	28,416
Short-term borrowings	1,625	3,297
Asset Pledged as Collateral
Pledged Assets related to secured borrowings [Line Items]
Amortized cost	2,822	4,030
Credit-Linked Notes
Pledged Assets related to secured borrowings [Line Items]
Total assets restricted as collateral	669	0
Pledged assets for Federal Home Loan Bank
Pledged Assets related to secured borrowings [Line Items]
Total assets restricted as collateral	26,500	27,900
Pledged assets for Federal Reserve Bank
Pledged Assets related to secured borrowings [Line Items]
Total assets restricted as collateral	33,800	34,000
Investment securities
Pledged Assets related to secured borrowings [Line Items]
Total assets restricted as collateral	2,946	4,036
Consumer | Automotive
Pledged Assets related to secured borrowings [Line Items]
Total assets restricted as collateral	38,316	40,805
Consumer | Consumer mortgage
Pledged Assets related to secured borrowings [Line Items]
Total assets restricted as collateral	17,269	18,703
Commercial
Pledged Assets related to secured borrowings [Line Items]
Total assets restricted as collateral	$ 6,297	$ 5,968

Accrued Expenses and Other Li_3

Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accounts Payable and Accrued Liabilities [Abstract]
Unfunded commitments for proportional amortization investments	$ 1,019	$ 973
Accounts payable	505	509
Employee compensation and benefits	424	409
Reserves for insurance losses and loss adjustment expenses	189	140	$ 119	$ 122
Deferred revenue	122	103
Operating lease liabilities	111	113
Other liabilities	444	479
Total accrued expenses and other liabilities	$ 2,814	$ 2,726
Operating lease, liability, statement of financial position [Extensible Enumeration]	Total accrued expenses and other liabilities	Total accrued expenses and other liabilities

Equity - Schedule of Stockholde

Equity - Schedule of Stockholders Equity (Details) - shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2016
Increase (Decrease) In Common Stock [Roll Forward]
Total common stock shares issued beginning balance (in shares)	511,861,447	507,683,000	504,522,000
Employee benefits and compensation plans (in shares)	3,916,000	4,179,000	3,161,000
Total common stock shares issued ending balance (in shares)	515,777,584	511,861,447	507,683,000
Treasury stock beginning balance (in shares)	(209,402,189)	(208,358,000)	(166,581,000)
Repurchase of common stock (in shares)	(988,000)	(1,044,000)	(41,778,000)
Treasury stock ending balance (in shares)	(210,390,034)	(209,402,189)	(208,358,000)
Common stock, shares outstanding (in shares)	305,387,550	302,459,258	299,324,000	304,715,000	304,656,000	303,978,000	301,630,000	301,619,000	300,821,000	484,000,000

Equity - Narrative (Details)

Equity - Narrative (Details) - $ / shares	1 Months Ended		12 Months Ended
	Jun. 30, 2021	Apr. 30, 2021	Dec. 31, 2024	Dec. 31, 2023
Preferred stock dividends — Series B
Class of Stock [Line Items]
Number of shares issued (in shares)		1,350,000	1,350,000	1,350,000
Dividend/coupon rate		4.70%
Par value (in dollars per share)		$ 0.01	$ 0.01	$ 0.01
Liquidation preference (in dollars per share)		$ 1,000	$ 1,000	$ 1,000
Preferred stock, reset period		five-year
Preferred stock, dividend payment terms		five-year
Trust Preferred Securities, Series 2
Class of Stock [Line Items]
Dividend/coupon rate	8.125%	8.125%
Series C Preferred Stock, On And After May 15, 2028
Class of Stock [Line Items]
Dividend/coupon rate	3.481%		3.481%	3.481%
Preferred stock dividends — Series C
Class of Stock [Line Items]
Number of shares issued (in shares)	1,000,000		1,000,000	1,000,000
Dividend/coupon rate	4.70%
Par value (in dollars per share)	$ 0.01		$ 0.01	$ 0.01
Liquidation preference (in dollars per share)	$ 1,000		$ 1,000	$ 1,000
Preferred stock, reset period	seven-year
Preferred stock, dividend payment terms	seven-year
Series B Preferred Stock, On And After May 15, 2026
Class of Stock [Line Items]
Dividend/coupon rate		3.868%	3.868%	3.868%

Equity - Schedule of Preferred

Equity - Schedule of Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended		12 Months Ended
	Jun. 30, 2021	Apr. 30, 2021	Dec. 31, 2024	Dec. 31, 2023
Class of Stock [Line Items]
Carrying value			$ 2,324	$ 2,324
Preferred stock dividends — Series B
Class of Stock [Line Items]
Carrying value			$ 1,335	$ 1,335
Par value (in dollars per share)		$ 0.01	$ 0.01	$ 0.01
Liquidation preference (in dollars per share)		$ 1,000	$ 1,000	$ 1,000
Number of shares authorized (in shares)			1,350,000	1,350,000
Number of shares issued (in shares)		1,350,000	1,350,000	1,350,000
Number of shares outstanding (in shares)			1,350,000	1,350,000
Dividend/coupon rate		4.70%
Series B Preferred Stock, Prior To May 15, 2026
Class of Stock [Line Items]
Dividend/coupon rate			4.70%	4.70%
Series B Preferred Stock, On And After May 15, 2026
Class of Stock [Line Items]
Dividend/coupon rate		3.868%	3.868%	3.868%
Preferred stock dividends — Series C
Class of Stock [Line Items]
Carrying value			$ 989	$ 989
Par value (in dollars per share)	$ 0.01		$ 0.01	$ 0.01
Liquidation preference (in dollars per share)	$ 1,000		$ 1,000	$ 1,000
Number of shares authorized (in shares)			1,000,000	1,000,000
Number of shares issued (in shares)	1,000,000		1,000,000	1,000,000
Number of shares outstanding (in shares)			1,000,000	1,000,000
Dividend/coupon rate	4.70%
Series C Preferred Stock, Prior To May 15, 2028
Class of Stock [Line Items]
Dividend/coupon rate			4.70%	4.70%
Series C Preferred Stock, On And After May 15, 2028
Class of Stock [Line Items]
Dividend/coupon rate	3.481%		3.481%	3.481%

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 13,703	$ 12,859	$ 17,050
Net change	(108)	243	(3,901)
Ending balance	13,903	13,703	12,859
Accumulated other comprehensive loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(3,816)	(4,059)	(158)
Net change	(108)	243	(3,901)
Ending balance	(3,924)	(3,816)	(4,059)
Available-for-sale securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(3,146)	(4,095)	(95)
Net change	(161)	949	(4,000)
Ending balance	(3,307)	(3,146)	(4,095)
Held-to-maturity securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(682)	0	0
Net change	66	(682)	0
Ending balance	(616)	(682)	0
Translation adjustments and net investment hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	21	18	19
Net change	(1)	3	(1)
Ending balance	20	21	18
Cash flow hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(9)	18	35
Net change	(12)	(27)	(17)
Ending balance	(21)	(9)	18
Defined benefit pension plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0	0	(117)
Net change	0	0	117
Ending balance	$ 0	$ 0	$ 0

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Loss - Narrative (Details) - Defined benefit pension plans $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net realized losses reclassified to income from continuing operations, net of tax	$ 115
Net realized losses reclassified to income from continuing operations, before tax	71
Net realized gains reclassified to income from continuing operations, tax	44
Stranded tax effects	$ 61

Accumulated Other Comprehensi_5

Accumulated Other Comprehensive Loss - Schedule of Reclassification Out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before tax	$ (136)	$ 314	$ (5,197)
Other comprehensive income (loss), tax effect	28	(71)	1,296
Other comprehensive (loss) income, net of tax	(108)	243	(3,901)
Available-for-sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gains (losses) arising during the period, before tax	(203)	338	(5,222)
Net unrealized gains (losses) arising during the period, tax	45	(78)	1,240
Net unrealized gains (losses) arising during the period, net of tax	(158)	260	(3,982)
Reclassification from AOCI, before tax	3	5	23
Reclassification from AOCI, tax	0	(1)	(5)
Reclassification from AOCI, net of tax	3	4	18
Other comprehensive income (loss), before tax	(206)	1,244	(5,245)
Other comprehensive income (loss), tax effect	45	(295)	1,245
Other comprehensive (loss) income, net of tax	(161)	949	(4,000)
Available for sale, transferred to held to maturity, parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gains (losses) arising during the period, before tax		911
Net unrealized gains (losses) arising during the period, tax		(218)
Net unrealized gains (losses) arising during the period, net of tax		693
Held-to-maturity securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gains (losses) arising during the period, before tax		(911)
Net unrealized gains (losses) arising during the period, tax		218
Net unrealized gains (losses) arising during the period, net of tax		(693)
Reclassification from AOCI, before tax	(87)	(14)
Reclassification from AOCI, tax	21	3
Reclassification from AOCI, net of tax	(66)	(11)
Other comprehensive income (loss), before tax		(897)
Other comprehensive income (loss), tax effect		215
Other comprehensive (loss) income, net of tax	66	(682)	0
Translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before tax	(17)	6	(10)
Other comprehensive income (loss), tax effect	4	(1)	2
Other comprehensive (loss) income, net of tax	(13)	5	(8)
Net investment hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before tax	16	(3)	8
Other comprehensive income (loss), tax effect	(4)	1	(1)
Other comprehensive (loss) income, net of tax	12	(2)	7
Cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gains (losses) arising during the period, before tax	(28)	(22)	(2)
Net unrealized gains (losses) arising during the period, tax	7	6	0
Net unrealized gains (losses) arising during the period, net of tax	(21)	(16)	(2)
Reclassification from AOCI, before tax	(12)	14	21
Reclassification from AOCI, tax	3	(3)	(6)
Reclassification from AOCI, net of tax	(9)	11	15
Other comprehensive income (loss), before tax	(16)	(36)	(23)
Other comprehensive income (loss), tax effect	4	9	6
Other comprehensive (loss) income, net of tax	(12)	(27)	(17)
Defined benefit pension plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gains (losses) arising during the period, before tax			2
Net unrealized gains (losses) arising during the period, tax			0
Net unrealized gains (losses) arising during the period, net of tax			2
Reclassification from AOCI, before tax			(71)
Reclassification from AOCI, tax			(44)
Reclassification from AOCI, net of tax			(115)
Other comprehensive income (loss), before tax			73
Other comprehensive income (loss), tax effect			44
Other comprehensive (loss) income, net of tax	$ 0	$ 0	$ 117

Earnings per Common Share (Deta

Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		3 Months Ended								12 Months Ended
		Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024		Dec. 31, 2023		Dec. 31, 2022
Class of Stock [Line Items]
Net income from continuing operations										$ 669		$ 959		$ 1,715	[1]
Net income from continuing operations attributable to common shareholders	[1]									559		849		1,605
Loss from discontinued operations, net of tax	[1]									(1)		(2)		(1)
Net income attributable to common shareholders	[1]									$ 558		$ 847		$ 1,604
Basic weighted-average common shares outstanding (in shares)	[1],[2]									306,913		303,751		316,690
Diluted weighted-average common shares outstanding (in shares)	[1],[2]									310,160		305,135		318,629
Basic earnings per common share
Net income from continuing operations (in dollars per share)	[1]									$ 1.82		$ 2.79		$ 5.07
Loss from discontinued operations, net of tax (in dollars per share)	[1]									0		(0.01)		0
Net income (in dollars per share)		$ 0.26	$ 0.55	$ 0.63	$ 0.38	$ 0.11	$ 0.85	$ 0.93	$ 0.90	1.82	[1]	2.79	[1]	5.06	[1]
Diluted earnings per common share
Net income from continuing operations (in dollars per share)	[1]									1.80		2.78		5.04
Loss from discontinued operations, net of tax (in dollars per share)	[1]									0		(0.01)		0
Net income (in dollars per share)		$ 0.26	$ 0.55	$ 0.62	$ 0.37	$ 0.11	$ 0.84	$ 0.93	$ 0.89	$ 1.80	[1]	$ 2.77	[1]	$ 5.03	[1]
Preferred stock dividends — Series B
Class of Stock [Line Items]
Preferred stock dividends										$ (63)	[1]	$ (63)		$ (63)	[1]
Preferred stock dividends — Series C
Class of Stock [Line Items]
Preferred stock dividends										$ (47)	[1]	$ (47)		$ (47)	[1]
[1] Figures in the table may not recalculate exactly due to rounding. Earnings per share is calculated based on unrounded numbers. Includes shares related to share-based compensation that vested but were not yet issued.

Regulatory Capital and Other _3

Regulatory Capital and Other Regulatory Matters - Schedule of Regulatory Capital Amount and Ratios (Details) $ in Millions	Dec. 31, 2024 USD ($)	Oct. 31, 2024	Dec. 31, 2023 USD ($)	Oct. 31, 2023	Oct. 31, 2022
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity tier one capital ratio, minimum	0.045
Tier one capital to risk-weighted assets, required minimum	0.06
Capital to risk-weighted assets, required minimum	0.08
Tier one leverage ratio, minimum	0.04
Minimum capital conservation buffer	0.025
Accumulated other comprehensive losses excluded from Common Equity Tier 1 Capital	$ 3,900		$ 3,800
Brokered deposits	$ 6,700
Percentage of interest-bearing domestic deposits to deposits, brokered	4.40%
Common equity tier one capital	$ 15,058		$ 15,129
Common equity tier one capital ratio	0.0982		0.0936
Tier one capital to risk-weighted assets, amount	$ 17,324		$ 17,392
Tier one capital to risk-weighted assets, ratio	0.1130		0.1076
Tier one capital to risk-weighted assets, well-capitalized minimum	0.0600
Capital to risk-weighted assets, amount	$ 20,182		$ 20,055
Capital to risk-weighted assets, ratio	0.1316		0.1241
Capital to risk weighted assets, well-capitalized minimum	0.1000
Tier one leverage to adjusted quarterly average assets, amount	$ 17,324		$ 17,392
Tier one leverage to adjusted quarterly average assets, ratio	0.0892		0.0867
Accounting Standards Update 2016-13
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Deferred reduction to Common Equity Tier 1 Capital from CECL	$ 296
Ally Financial Inc
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum capital conservation buffer	0.026	0.026	0.025	0.025	0.025
Ally Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity tier one capital ratio, minimum	0.0450
Tier one capital to risk-weighted assets, required minimum	0.0600
Capital to risk-weighted assets, required minimum	0.0800
Tier one leverage ratio, minimum	0.0400
Minimum capital conservation buffer	0.025		0.025
Common equity tier one capital	$ 17,229		$ 17,217
Common equity tier one capital ratio	0.1194		0.1124
Common equity tier one capital, well capitalized minimum	0.0650
Tier one capital to risk-weighted assets, amount	$ 17,229		$ 17,217
Tier one capital to risk-weighted assets, ratio	0.1194		0.1124
Tier one capital to risk-weighted assets, well-capitalized minimum	0.0800
Capital to risk-weighted assets, amount	$ 19,052		$ 19,144
Capital to risk-weighted assets, ratio	0.1321		0.1250
Capital to risk weighted assets, well-capitalized minimum	0.1000
Tier one leverage to adjusted quarterly average assets, amount	$ 17,229		$ 17,217
Tier one leverage to adjusted quarterly average assets, ratio	0.0940		0.0907
Tier one leverage to adjusted quarterly average assets, well-capitalized minimum	0.0500

Regulatory Capital and Other _4

Regulatory Capital and Other Regulatory Matters - Schedule of Common Share Repurchases (Details) $ / shares in Units, $ in Millions			1 Months Ended				3 Months Ended								12 Months Ended			102 Months Ended
		Jan. 16, 2025 $ / shares	Dec. 31, 2024 USD ($) $ / shares shares	Nov. 30, 2024 USD ($)	Jun. 30, 2024 USD ($) $ / shares shares	Feb. 28, 2023 USD ($)	Dec. 31, 2024 USD ($) $ / shares shares	Sep. 30, 2024 USD ($) $ / shares shares	Jun. 30, 2024 USD ($) $ / shares shares	Mar. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Sep. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2023 USD ($) $ / shares shares	Mar. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2024 $ / shares shares	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022	Jun. 30, 2016 shares
Accelerated Share Repurchases [Line Items]
Minimum capital conservation buffer			0.025				0.025								0.025			0.025
Proceeds from issuance of long-term debt															$ 4,337	$ 5,705	$ 7,125
Stock repurchased during period, value							$ 7	$ 1	$ 1	$ 29	$ 4	$ 0	$ 2	$ 27
Stock repurchased during period, number of shares (in share) | shares							167,000	27,000	13,000	781,000	145,000	5,000	58,000	836,000
Common stock, shares outstanding (in shares) | shares			305,387,550		304,656,000		305,387,550	304,715,000	304,656,000	303,978,000	302,459,258	301,630,000	301,619,000	300,821,000	305,387,550	302,459,258	299,324,000	305,387,550				484,000,000
Dividends declared (in dollars per share) | $ / shares			$ 0.30		$ 0.30		$ 0.30	$ 0.30	$ 0.30	$ 0.30	$ 0.30	$ 0.30	$ 0.30	$ 0.30	$ 0.30	$ 0.30		$ 0.30
Common stock, share reduction																		37%
Cash dividends declared per common share (in dollars per share) | $ / shares	[1]														$ 1.20	$ 1.20	$ 1.20
Subsequent event
Accelerated Share Repurchases [Line Items]
Cash dividends declared per common share (in dollars per share) | $ / shares		$ 0.30
Credit-Linked Notes
Accelerated Share Repurchases [Line Items]
Proceeds from issuance of long-term debt				$ 440	$ 330
Automotive | Credit-Linked Notes | Consumer
Accelerated Share Repurchases [Line Items]
Debt instrument, reference portfolio amount				$ 4,000	$ 3,000				$ 3,000
Ally Financial Inc
Accelerated Share Repurchases [Line Items]
Minimum capital conservation buffer			0.026				0.026				0.025				0.026	0.025		0.026	0.026	0.025	0.025
Unsecured debt
Accelerated Share Repurchases [Line Items]
Proceeds from issuance of long-term debt			$ 500			$ 500
[1] Figures in the table may not recalculate exactly due to rounding. Earnings per share is calculated based on unrounded numbers.

Regulatory Capital and Other _5

Regulatory Capital and Other Regulatory Matters - Depository Institutions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total assets	$ 191,836	$ 196,329	$ 191,826
Statutory accounting practices, statutory amount available for dividend payments	116
Ally Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total assets	181,400	186,100
Payments of dividends	$ 1,200	$ 1,400

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Noncash collateral placed with counterparties	$ 414	$ 642
Cash collateral placed with counterparties		6
Cash collateral received from counterparties	$ 11	$ 31

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities - Schedule of Fair Value Amounts of Derivative Instruments Reported on our Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
receivable position	$ 12	$ 33
payable position	4	17
Notional amount	40,508	44,468
Credit derivative, maximum exposure, undiscounted	10	29
Total derivatives designated as accounting hedges
Derivatives, Fair Value [Line Items]
receivable position	10	31
payable position	0	6
Notional amount	39,620	42,251
Total derivatives not designated as accounting hedges
Derivatives, Fair Value [Line Items]
receivable position	2	2
payable position	4	11
Notional amount	888	2,217
Interest rate contracts | Total derivatives not designated as accounting hedges
Derivatives, Fair Value [Line Items]
receivable position	1	2
payable position	0	0
Notional amount	172	2,158
Swaps | Total derivatives designated as accounting hedges
Derivatives, Fair Value [Line Items]
receivable position	0	0
payable position	0	0
Notional amount	33,300	35,835
Swaps | Total derivatives not designated as accounting hedges
Derivatives, Fair Value [Line Items]
receivable position	0	0
payable position	0	0
Notional amount	0	2,000
Purchased options | Total derivatives designated as accounting hedges
Derivatives, Fair Value [Line Items]
receivable position	2	31
payable position	0	0
Notional amount	6,150	6,250
Forwards | Total derivatives not designated as accounting hedges
Derivatives, Fair Value [Line Items]
receivable position	0	0
payable position	0	0
Notional amount	109	70
Written options | Total derivatives not designated as accounting hedges
Derivatives, Fair Value [Line Items]
receivable position	1	2
payable position	0	0
Notional amount	63	88
Foreign exchange contracts | Total derivatives not designated as accounting hedges
Derivatives, Fair Value [Line Items]
receivable position	1	0
payable position	0	1
Notional amount	47	59
Forwards | Total derivatives designated as accounting hedges
Derivatives, Fair Value [Line Items]
receivable position	8	0
payable position	0	6
Notional amount	170	166
Forwards | Total derivatives not designated as accounting hedges
Derivatives, Fair Value [Line Items]
receivable position	1	0
payable position	0	1
Notional amount	47	59
Total credit risk | Total derivatives not designated as accounting hedges
Derivatives, Fair Value [Line Items]
receivable position	0	0
payable position	4	10
Notional amount	669	0
Credit-linked note derivatives | Total derivatives not designated as accounting hedges
Derivatives, Fair Value [Line Items]
receivable position	0	0
payable position	0	0
Notional amount	669	0
Other credit derivatives | Total derivatives not designated as accounting hedges
Derivatives, Fair Value [Line Items]
receivable position	0	0
payable position	$ 4	$ 10

Derivative Instruments and He_5

Derivative Instruments and Hedging Activities - Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged liability, fair value hedge	$ 5,987	$ 7,750
Hedged Liability, Statement of Financial Position [Extensible Enumeration]	Long-term debt	Long-term debt
Available-for-sale securities
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged asset, fair value hedge	$ 15,194	$ 16,302
Hedged asset, fair value hedge, cumulative increase (decrease)	$ (248)	$ (79)
Hedged Asset, Statement of Financial Position [Extensible Enumeration]	Available-for-sale securities (amortized cost of $26,810 and $28,416)	Available-for-sale securities (amortized cost of $26,810 and $28,416)
Closed portfolio and beneficial interest, last-of-layer, amortized cost	$ 13,900	$ 14,800
Amortized cost	13,600	14,600
Basis adjustment for active hedge	(209)	(45)
Hedged asset, last-of-layer, amount	12,000	11,300
Available-for-sale securities | Total derivatives designated as accounting hedges
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Basis adjustment for active hedge	(106)	75
Finance receivables and loans, net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged asset, fair value hedge	34,493	54,189
Hedged asset, fair value hedge, cumulative increase (decrease)	$ (51)	$ (93)
Hedged Asset, Statement of Financial Position [Extensible Enumeration]	Finance receivables and loans, net	Finance receivables and loans, net
Basis adjustment for active hedge	$ (51)	$ (93)
Hedged asset, last-of-layer, amount	20,100	23,200
Closed portfolio, carrying value	33,400	50,000
Finance receivables and loans, net | Total derivatives designated as accounting hedges
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Basis adjustment for active hedge	(41)	(66)
Long-term debt
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged liability, fair value hedge, cumulative increase (decrease)	88	100
Discontinued hedge | Available-for-sale securities
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged asset, discontinued fair value hedge, cumulative increase (decrease)	(132)	(156)
Basis adjustment for active hedge	(103)	(120)
Discontinued hedge | Finance receivables and loans, net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged asset, discontinued fair value hedge, cumulative increase (decrease)	(10)	(27)
Basis adjustment for active hedge	(10)	(27)
Discontinued hedge | Long-term debt
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged liability, discontinued fair value hedge, cumulative increase (decrease)	$ 88	$ 100

Derivative Instruments and He_6

Derivative Instruments and Hedging Activities - Schedule of Statement of Gains and Losses on Derivative Instruments Reported in Statement of Comprehensive Income (Details) - Total derivatives not designated as accounting hedges - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Total gain recognized in earnings	$ 27	$ 1	$ 28
Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total gain recognized in earnings	20	17	22
Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total gain recognized in earnings	3	0	8
Other credit derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Total gain recognized in earnings	1	(5)	(2)
Equity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total gain recognized in earnings	3	(11)	0
Gain on mortgage and automotive loans, net | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total gain recognized in earnings	20	18	14
Other operating expenses | Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total gain recognized in earnings	3	0	8
Other income, net of losses | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total gain recognized in earnings	0	(1)	8
Other income, net of losses | Other credit derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Total gain recognized in earnings	1	(5)	(2)
Other income, net of losses | Equity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total gain recognized in earnings	$ 3	$ (11)	$ 0

Derivative Instruments and He_7

Derivative Instruments and Hedging Activities - Schedule of Derivative Instruments Designated as Fair Value Hedges, Gain (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Interest and fees on finance receivables and loans	$ 11,394	$ 11,020	$ 8,099
Interest and dividends on investment securities and other earning assets	1,037	1,022	841
Interest on long-term debt	1,017	1,001	763
Loss on cash flow hedges to be recognized within twelve months	33
Total derivatives designated as accounting hedges | Interest and fees on finance receivables and loans
Derivative Instruments, Gain (Loss) [Line Items]
Total gain on fair value hedging relationships	0	0	0
Total (loss) gain on cash flow hedging relationships	(12)	14	21
Total derivatives designated as accounting hedges | Interest and dividends on investment securities and other earning assets
Derivative Instruments, Gain (Loss) [Line Items]
Total gain on fair value hedging relationships	0	0	0
Total (loss) gain on cash flow hedging relationships	0	0	0
Total derivatives designated as accounting hedges | Interest on long-term debt
Derivative Instruments, Gain (Loss) [Line Items]
Total gain on fair value hedging relationships	0	0	0
Total (loss) gain on cash flow hedging relationships	0	0	(1)
Total derivatives designated as accounting hedges | Unsecured debt | Interest and fees on finance receivables and loans
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gain (loss) on hedged item in fair value hedge	0	0	0
Change in unrealized gain (loss) on fair value hedging instruments	0	0	0
Total derivatives designated as accounting hedges | Unsecured debt | Interest and dividends on investment securities and other earning assets
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gain (loss) on hedged item in fair value hedge	0	0	0
Change in unrealized gain (loss) on fair value hedging instruments	0	0	0
Total derivatives designated as accounting hedges | Unsecured debt | Interest on long-term debt
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gain (loss) on hedged item in fair value hedge	0	1	1
Change in unrealized gain (loss) on fair value hedging instruments	0	(1)	(1)
Total derivatives designated as accounting hedges | Hedged fixed-rate FHLB advances | Interest and fees on finance receivables and loans
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gain (loss) on hedged item in fair value hedge	0	0	0
Change in unrealized gain (loss) on fair value hedging instruments	0	0	0
Total derivatives designated as accounting hedges | Hedged fixed-rate FHLB advances | Interest and dividends on investment securities and other earning assets
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gain (loss) on hedged item in fair value hedge	0	0	0
Change in unrealized gain (loss) on fair value hedging instruments	0	0	0
Total derivatives designated as accounting hedges | Hedged fixed-rate FHLB advances | Interest on long-term debt
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gain (loss) on hedged item in fair value hedge	0	0	(5)
Change in unrealized gain (loss) on fair value hedging instruments	0	0	5
Total derivatives designated as accounting hedges | Hedged available-for-sale securities | Interest and fees on finance receivables and loans
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gain (loss) on hedged item in fair value hedge	0	0	0
Change in unrealized gain (loss) on fair value hedging instruments	0	0	0
Total derivatives designated as accounting hedges | Hedged available-for-sale securities | Interest and dividends on investment securities and other earning assets
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gain (loss) on hedged item in fair value hedge	(193)	76	(185)
Change in unrealized gain (loss) on fair value hedging instruments	193	(76)	185
Total derivatives designated as accounting hedges | Hedged available-for-sale securities | Interest on long-term debt
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gain (loss) on hedged item in fair value hedge	0	0	0
Change in unrealized gain (loss) on fair value hedging instruments	0	0	0
Total derivatives designated as accounting hedges | Fixed-rate automotive loans | Interest and fees on finance receivables and loans
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gain (loss) on hedged item in fair value hedge	25	491	(599)
Change in unrealized gain (loss) on fair value hedging instruments	(25)	(491)	599
Total derivatives designated as accounting hedges | Fixed-rate automotive loans | Interest and dividends on investment securities and other earning assets
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gain (loss) on hedged item in fair value hedge	0	0	0
Change in unrealized gain (loss) on fair value hedging instruments	0	0	0
Total derivatives designated as accounting hedges | Fixed-rate automotive loans | Interest on long-term debt
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gain (loss) on hedged item in fair value hedge	0	0	0
Change in unrealized gain (loss) on fair value hedging instruments	0	0	0
Total derivatives designated as accounting hedges | Hedged variable-rate commercial loans | Interest and fees on finance receivables and loans
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate cash flow hedge loss reclassified to earnings	(12)	14	21
Total derivatives designated as accounting hedges | Hedged variable-rate commercial loans | Interest and dividends on investment securities and other earning assets
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate cash flow hedge loss reclassified to earnings	0	0	0
Total derivatives designated as accounting hedges | Hedged variable-rate commercial loans | Interest on long-term debt
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate cash flow hedge loss reclassified to earnings	0	0	0
Total derivatives designated as accounting hedges | Other hedged forecasted transactions | Interest and fees on finance receivables and loans
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate cash flow hedge loss reclassified to earnings	0	0	0
Total derivatives designated as accounting hedges | Other hedged forecasted transactions | Interest and dividends on investment securities and other earning assets
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate cash flow hedge loss reclassified to earnings	0	0	0
Total derivatives designated as accounting hedges | Other hedged forecasted transactions | Interest on long-term debt
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate cash flow hedge loss reclassified to earnings	$ 0	$ 0	$ (1)

Derivative Instruments and He_8

Derivative Instruments and Hedging Activities - Schedule of Interest and Amortization on Derivative Instruments (Details) - Total derivatives designated as accounting hedges - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Interest and fees on finance receivables and loans
Derivative Instruments, Gain (Loss) [Line Items]
Total gain on fair value hedging relationships	$ 256	$ 648	$ 147
Interest and dividends on investment securities and other earning assets
Derivative Instruments, Gain (Loss) [Line Items]
Total gain on fair value hedging relationships	200	157	16
Interest on long-term debt
Derivative Instruments, Gain (Loss) [Line Items]
Total gain on fair value hedging relationships	11	11	3
Unsecured debt | Interest and fees on finance receivables and loans
Derivative Instruments, Gain (Loss) [Line Items]
Gain on amortization of deferred basis adjustments	0	0	0
Gain on interest for qualifying hedge	0	0	0
Unsecured debt | Interest and dividends on investment securities and other earning assets
Derivative Instruments, Gain (Loss) [Line Items]
Gain on amortization of deferred basis adjustments	0	0	0
Gain on interest for qualifying hedge	0	0	0
Unsecured debt | Interest on long-term debt
Derivative Instruments, Gain (Loss) [Line Items]
Gain on amortization of deferred basis adjustments	9	9	5
Gain on interest for qualifying hedge	0	0	1
Federal Home Loan Bank certificates and obligations | Interest and fees on finance receivables and loans
Derivative Instruments, Gain (Loss) [Line Items]
Gain on amortization of deferred basis adjustments	0	0	0
Federal Home Loan Bank certificates and obligations | Interest and dividends on investment securities and other earning assets
Derivative Instruments, Gain (Loss) [Line Items]
Gain on amortization of deferred basis adjustments	0	0	0
Federal Home Loan Bank certificates and obligations | Interest on long-term debt
Derivative Instruments, Gain (Loss) [Line Items]
Gain on amortization of deferred basis adjustments	2	2	(3)
Hedged available-for-sale securities | Interest and fees on finance receivables and loans
Derivative Instruments, Gain (Loss) [Line Items]
Gain on amortization of deferred basis adjustments	0	0	0
Gain on interest for qualifying hedge	0	0	0
Hedged available-for-sale securities | Interest and dividends on investment securities and other earning assets
Derivative Instruments, Gain (Loss) [Line Items]
Gain on amortization of deferred basis adjustments	23	23	17
Gain on interest for qualifying hedge	177	134	(1)
Hedged available-for-sale securities | Interest on long-term debt
Derivative Instruments, Gain (Loss) [Line Items]
Gain on amortization of deferred basis adjustments	0	0	0
Gain on interest for qualifying hedge	0	0	0
Fixed-rate automotive loans | Interest and fees on finance receivables and loans
Derivative Instruments, Gain (Loss) [Line Items]
Gain on amortization of deferred basis adjustments	15	32	18
Gain on interest for qualifying hedge	241	616	129
Fixed-rate automotive loans | Interest and dividends on investment securities and other earning assets
Derivative Instruments, Gain (Loss) [Line Items]
Gain on amortization of deferred basis adjustments	0	0	0
Gain on interest for qualifying hedge	0	0	0
Fixed-rate automotive loans | Interest on long-term debt
Derivative Instruments, Gain (Loss) [Line Items]
Gain on amortization of deferred basis adjustments	0	0	0
Gain on interest for qualifying hedge	$ 0	$ 0	$ 0

Derivative Instruments and He_9

Derivative Instruments and Hedging Activities - Schedule of Derivative Instruments Used in Net Investment Hedge Accounting Relationships (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Interest rate contracts | Cash flow hedging
Derivative Instruments, Gain (Loss) [Line Items]
Loss recognized in other comprehensive (loss) income	$ (16,000,000)	$ (36,000,000)	$ (23,000,000)
Foreign exchange contracts | Net investment hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in other comprehensive (loss) income	16,000,000	(3,000,000)	8,000,000
Amounts excluded from effectiveness testing	0	0	0
Amounts reclassified from accumulated other comprehensive income	$ 0	$ 0	$ 0

Income Taxes - Schedule of Comp

Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current income tax expense
U.S. federal									$ 107	$ 85	$ 1
Foreign									6	5	3
State and local									26	36	9
Total current expense									139	126	13
Deferred income tax expense (benefit)
U.S. federal									53	26	493
Foreign									1	(1)	(1)
State and local									(26)	(7)	61
Total deferred expense (benefit)									28	18	553
Other tax expense									0	0	61
Total income tax expense from continuing operations	$ 0	$ 67	$ 60	$ 40	$ 10	$ (51)	$ 96	$ 89	$ 167	$ 144	$ 627

Income Taxes - Schedule of Effe

Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Statutory U.S. federal tax expense									$ 175	$ 232	$ 492
Nondeductible expenses									53	44	31
Tax credits, excluding expirations									(49)	(55)	(73)
State and local income taxes, net of federal income tax benefit									30	(4)	77
Valuation allowance change, excluding expirations									(28)	(91)	54
Unrecognized tax benefits									(11)	38	(4)
Tax law enactment									0	(18)	0
Settlement of qualified defined benefit pension plan									0	0	61
Other, net									(3)	(2)	(11)
Total income tax expense from continuing operations	$ 0	$ 67	$ 60	$ 40	$ 10	$ (51)	$ 96	$ 89	$ 167	$ 144	$ 627

Income Taxes - Schedule of Defe

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deferred Tax Assets, Gross [Abstract]
Adjustments to securities and hedging transactions	$ 1,080	$ 1,066
Tax credit carryforwards	679	506
Adjustments to loan value	420	569
State and local taxes	301	305
Fixed assets	257	165
Other	454	426
Gross deferred tax assets	3,191	3,037
Valuation allowance	(138)	(176)
Deferred tax assets, net of valuation allowance	3,053	2,861
Deferred tax liabilities
Lease transactions	653	1,117
Deferred acquisition costs	380	387
Long-term debt	62	64
Other	52	57
Gross deferred tax liabilities	1,147	1,625
Net deferred tax assets	1,906	1,236
Deferred tax asset	882	808
Net deferred tax assets	1,916	1,247
Net deferred tax liabilities	$ 10	$ 10

Income Taxes - Schedule of Valu

Income Taxes - Schedule of Valuation Allowance (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Valuation Allowance [Line Items]
Tax credit carryforwards, Deferred tax asset (liability)	$ 679	$ 506
Tax credit carryforwards, valuation allowance	(27)
Tax credit carryforwards, net deferred tax asset (liability)	652
Total U.S. federal and state tax loss carryforwards, deferred tax asset (liability)	135
Total U.S. federal and state tax loss carryforwards, Valuation allowance	(111)
Total U.S. federal and state tax loss carryforwards, net deferred tax asset (liability)	24
Other net deferred tax assets	1,230
Other net deferred tax assets, valuation allowance	0
Net deferred tax assets, Deferred tax asset	2,044
Net deferred tax assets, valuation allowance	(138)	(176)
Net deferred tax assets, net of deferred tax assets	1,906	$ 1,236
General business credits
Valuation Allowance [Line Items]
Tax credit carryforwards, Deferred tax asset (liability)	611
Tax credit carryforwards, valuation allowance	0
Tax credit carryforwards, net deferred tax asset (liability)	611
Foreign tax credits
Valuation Allowance [Line Items]
Tax credit carryforwards, Deferred tax asset (liability)	68
Tax credit carryforwards, valuation allowance	(27)
Tax credit carryforwards, net deferred tax asset (liability)	41
State
Valuation Allowance [Line Items]
Tax loss carryforwards, deferred tax asset (liability)	128
Tax loss carryforwards, valuation allowance	(111)
Tax loss carryforwards, net deferred tax asset (liability)	17
Federal
Valuation Allowance [Line Items]
Tax loss carryforwards, deferred tax asset (liability)	7
Tax loss carryforwards, valuation allowance	0
Tax loss carryforwards, net deferred tax asset (liability)	$ 7

Income Taxes - Schedule of Unre

Income Taxes - Schedule of Unrecognized Tax Benefits Roll Forward (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at January 1	$ 91	$ 46	$ 53
Additions based on tax positions related to the current year	0	0	0
Additions for tax positions of prior years	6	48	2
Reductions for tax positions of prior years	(20)	(2)	(2)
Settlements	0	(1)	(7)
Expiration of statute of limitations	0	0	0
Balance at December 31	$ 77	$ 91	$ 46

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Unrecognized tax benefits that would impact effective tax rate	$ 64	$ 75	$ 36
Unrecognized tax benefits, income tax penalties and interest accrued	7	6	3
Unrecognized tax benefits, income tax penalties and interest expense	1		$ 2
Unrecognized tax benefits, income tax penalties expense		$ 3
Decrease in unrecognized tax benefits is reasonably possible	$ 62

Share-based Compensation Plan_2

Share-based Compensation Plans - Narrative (Details) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	31,700
Performance Share Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)	6,600
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)	700
Restricted Stock Units (RSUs) | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	33.33%
Restricted Stock Units (RSUs) | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	33.33%
Restricted Stock Units (RSUs) | Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	33.33%
Restricted Stock Units (RSUs) and Performance Share Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)	6,619	6,695
Share-based payment arrangement, expense	$ 136	$ 127	$ 100

Share-based Compensation Plan_3

Share-based Compensation Plans - Schedule of Non-Vested PSUs and RSUs Activity (Details) - Restricted Stock Units (RSUs) and Performance Share Units (PSUs) shares in Thousands	12 Months Ended
	Dec. 31, 2024 $ / shares shares
Number of units
Outstanding non-vested at January 1 (in shares) | shares	6,695
Modified awards to settle in cash (in shares) | shares	(56)
Granted (in shares) | shares	3,305
Vested (in shares) | shares	(2,824)
Forfeited (in shares) | shares	(501)
Outstanding non-vested at December 31 (in shares) | shares	6,619
Weighted-average grant date fair value per share
Outstanding non-vested at January 1 (in dollars per share) | $ / shares	$ 35.68
Modified awards to settle in cash (in dollars per share) | $ / shares	40.24
Granted (in dollars per share) | $ / shares	37.99
Vested (in dollars per share) | $ / shares	38.13
Forfeited (in dollars per share) | $ / shares	38.39
Outstanding non-vested at December 31 (in dollars per share) | $ / shares	$ 35.55

Fair Value - Schedule of Fair V

Fair Value - Schedule of Fair Value Measurements - Recurring Basis (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	$ 871	$ 810
Total available-for-sale securities	$ 22,410	$ 24,415
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Finance receivables and loans, net	Finance receivables and loans, net
Derivative contracts in a receivable position	$ 12	$ 33
Investment in any one industry did not exceed percentage	14%	11%
Carrying amount, equity investments without a readily determinable fair value	$ 91	$ 102
Fair value, measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	22,410	24,415
Mortgage loans held-for-sale	16	25
Derivative contracts in a receivable position	12	33
Total assets	23,258	25,239
Total derivative contracts in a payable position	4	17
Total liabilities	4	17
Fair value, measurements, recurring | Foreign currency contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative contracts in a payable position		7
Fair value, measurements, recurring | Credit contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative contracts in a payable position	4	10
Fair value, measurements, recurring | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	820	766
Carrying amount, equity investments without a readily determinable fair value	51	44
Fair value, measurements, recurring | U.S. Treasury and federal agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	1,873	2,075
Fair value, measurements, recurring | U.S. States and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	617	658
Fair value, measurements, recurring | Foreign government
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	194	183
Fair value, measurements, recurring | Agency mortgage-backed residential
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	13,653	15,384
Fair value, measurements, recurring | Mortgage-backed residential
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	206	225
Fair value, measurements, recurring | Agency mortgage-backed commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	3,984	3,758
Fair value, measurements, recurring | Asset-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	129	332
Fair value, measurements, recurring | Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	1,754	1,800
Fair value, measurements, recurring | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative contracts in a receivable position	3	33
Fair value, measurements, recurring | Foreign currency contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative contracts in a receivable position	9
Fair value, measurements, recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	1,909	2,126
Mortgage loans held-for-sale	0	0
Derivative contracts in a receivable position	0	0
Total assets	2,729	2,891
Total derivative contracts in a payable position	0	0
Total liabilities	0	0
Fair value, measurements, recurring | Level 1 | Foreign currency contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative contracts in a payable position		0
Fair value, measurements, recurring | Level 1 | Credit contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative contracts in a payable position	0	0
Fair value, measurements, recurring | Level 1 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	820	765
Fair value, measurements, recurring | Level 1 | U.S. Treasury and federal agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	1,873	2,075
Fair value, measurements, recurring | Level 1 | U.S. States and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0	0
Fair value, measurements, recurring | Level 1 | Foreign government
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	36	51
Fair value, measurements, recurring | Level 1 | Agency mortgage-backed residential
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0	0
Fair value, measurements, recurring | Level 1 | Mortgage-backed residential
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0	0
Fair value, measurements, recurring | Level 1 | Agency mortgage-backed commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0	0
Fair value, measurements, recurring | Level 1 | Asset-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0	0
Fair value, measurements, recurring | Level 1 | Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0	0
Fair value, measurements, recurring | Level 1 | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative contracts in a receivable position	0	0
Fair value, measurements, recurring | Level 1 | Foreign currency contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative contracts in a receivable position	0
Fair value, measurements, recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	20,466	22,280
Mortgage loans held-for-sale	11	25
Derivative contracts in a receivable position	11	31
Total assets	20,488	22,336
Total derivative contracts in a payable position	0	7
Total liabilities	0	7
Fair value, measurements, recurring | Level 2 | Foreign currency contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative contracts in a payable position		7
Fair value, measurements, recurring | Level 2 | Credit contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative contracts in a payable position	0	0
Fair value, measurements, recurring | Level 2 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Fair value, measurements, recurring | Level 2 | U.S. Treasury and federal agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0	0
Fair value, measurements, recurring | Level 2 | U.S. States and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	582	649
Fair value, measurements, recurring | Level 2 | Foreign government
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	158	132
Fair value, measurements, recurring | Level 2 | Agency mortgage-backed residential
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	13,653	15,384
Fair value, measurements, recurring | Level 2 | Mortgage-backed residential
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	206	225
Fair value, measurements, recurring | Level 2 | Agency mortgage-backed commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	3,984	3,758
Fair value, measurements, recurring | Level 2 | Asset-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	129	332
Fair value, measurements, recurring | Level 2 | Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	1,754	1,800
Fair value, measurements, recurring | Level 2 | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative contracts in a receivable position	2	31
Fair value, measurements, recurring | Level 2 | Foreign currency contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative contracts in a receivable position	9
Fair value, measurements, recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	35	9
Mortgage loans held-for-sale	5	0
Derivative contracts in a receivable position	1	2
Total assets	41	12
Total derivative contracts in a payable position	4	10
Total liabilities	4	10
Fair value, measurements, recurring | Level 3 | Foreign currency contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative contracts in a payable position		0
Fair value, measurements, recurring | Level 3 | Credit contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative contracts in a payable position	4	10
Fair value, measurements, recurring | Level 3 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	1
Fair value, measurements, recurring | Level 3 | U.S. Treasury and federal agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0	0
Fair value, measurements, recurring | Level 3 | U.S. States and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	35	9
Fair value, measurements, recurring | Level 3 | Foreign government
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0	0
Fair value, measurements, recurring | Level 3 | Agency mortgage-backed residential
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0	0
Fair value, measurements, recurring | Level 3 | Mortgage-backed residential
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0	0
Fair value, measurements, recurring | Level 3 | Agency mortgage-backed commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0	0
Fair value, measurements, recurring | Level 3 | Asset-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0	0
Fair value, measurements, recurring | Level 3 | Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0	0
Fair value, measurements, recurring | Level 3 | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative contracts in a receivable position	1	$ 2
Fair value, measurements, recurring | Level 3 | Foreign currency contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative contracts in a receivable position	$ 0

Fair Value - Schedule of Fair_2

Fair Value - Schedule of Fair Value Measurements - Reconciliation of Level 3 Assets And Liabilities (Details) - Fair value, measurements, recurring - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Derivative liabilities, net of derivative assets
Liabilities
Fair value at beginning of the period	$ 8	$ 39
Fair value at January 1,
Included in earnings	(18)	(11)
Included in OCI	0	0
Purchases and originations	0	0
Sales	0	0
Issuances	0	0
Settlements	(4)	(34)
Transfers into Level 3	0	0
Transfers out of Level 3	17	14
Fair value at ending of the period	3	8
Net unrealized gains still held at December 31,
Included in earnings	(7)	(7)
Included in OCI	0	0
Equity securities
Assets
Fair value at beginning of the period	1	1
Net realized/unrealized gains
Included in earnings	0	0
Included in OCI	0	0
Purchases and originations	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	(1)	0
Fair value at ending of the period	0	1
Net unrealized gains still held at December 31,
Included in earnings	0	0
Included in OCI	0	0
Available-for-sale securities
Assets
Fair value at beginning of the period	9	4
Net realized/unrealized gains
Included in earnings	0	0
Included in OCI	0	0
Purchases and originations	29	5
Sales	0	0
Issuances	0	0
Settlements	(3)	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair value at ending of the period	35	9
Net unrealized gains still held at December 31,
Included in earnings	0	0
Included in OCI	0	0
Available-for-sale debt security	27
Loans held-for-sale
Assets
Fair value at beginning of the period	0	0
Net realized/unrealized gains
Included in earnings	0	0
Included in OCI	0	0
Purchases and originations	31	0
Sales	(26)	0
Issuances	0	0
Settlements	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair value at ending of the period	5	0
Net unrealized gains still held at December 31,
Included in earnings	0	0
Included in OCI	0	0
Finance receivables and loans, net | Consumer Loan
Assets
Fair value at beginning of the period	0	3
Net realized/unrealized gains
Included in earnings	0	0
Included in OCI	0	0
Purchases and originations	0	0
Sales	0	0
Issuances	0	0
Settlements	0	(3)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair value at ending of the period	0	0
Net unrealized gains still held at December 31,
Included in earnings	0	0
Included in OCI	$ 0	$ 0

Fair Value - Schedule of Fair_3

Fair Value - Schedule of Fair Value Measurements - Nonrecurring Basis (Details) - USD ($) $ in Millions		12 Months Ended
	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, net	$ 160	$ 160	$ 400
Finance receivables and loans, net	132,316	132,316	135,852
Goodwill impairment		118	149	$ 0
Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, net	143	143	375
Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments	0	0	0
Goodwill impairment	118
Assets | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	552	552	441
Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments	(184)	(184)	(43)
Goodwill | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill	362	362
Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments	(118)	(118)
Nonmarketable equity investments | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets			1
Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments			1
Repossessed and foreclosed assets | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets	8	8	10
Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments	(1)	(1)	(1)
Level 1 | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, net	0	0	0
Level 1 | Assets | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0	0	0
Level 1 | Goodwill | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill	0	0
Level 1 | Nonmarketable equity investments | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets			0
Level 1 | Repossessed and foreclosed assets | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets	0	0	0
Level 2 | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, net	0	0	0
Level 2 | Assets | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0	0	0
Level 2 | Goodwill | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill	0	0
Level 2 | Nonmarketable equity investments | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets			0
Level 2 | Repossessed and foreclosed assets | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets	0	0	0
Level 3 | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, net	143	143	375
Level 3 | Assets | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	552	552	441
Level 3 | Goodwill | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill	362	362
Level 3 | Nonmarketable equity investments | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets			1
Level 3 | Repossessed and foreclosed assets | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets	8	8	10
Commercial | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Finance receivables and loans, net	39	39	55
Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments	(65)	(65)	(43)
Commercial | Level 1 | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Finance receivables and loans, net	0	0	0
Commercial | Level 2 | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Finance receivables and loans, net	0	0	0
Commercial | Level 3 | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Finance receivables and loans, net	39	39	55
Automotive | Commercial | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Finance receivables and loans, net	13	13	6
Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments	(2)	(2)	0
Automotive | Commercial | Level 1 | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Finance receivables and loans, net	0	0	0
Automotive | Commercial | Level 2 | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Finance receivables and loans, net	0	0	0
Automotive | Commercial | Level 3 | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Finance receivables and loans, net	13	13	6
Other | Commercial | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Finance receivables and loans, net	26	26	49
Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments	(63)	(63)	(43)
Other | Commercial | Level 1 | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Finance receivables and loans, net	0	0	0
Other | Commercial | Level 2 | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Finance receivables and loans, net	0	0	0
Other | Commercial | Level 3 | Nonrecurring fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Finance receivables and loans, net	$ 26	$ 26	$ 49

Fair Value - Schedule of Fair_4

Fair Value - Schedule of Fair Value, by Balance Sheet Grouping (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity securities	$ 4,346	$ 4,680
Loans held-for-sale, net	160	400
Finance receivables and loans, net	132,316	135,852
Deposit liabilities	151,574	154,666
Short-term borrowings	1,625	3,297
Long-term debt	17,495	17,570
Carrying value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity securities	4,346	4,680
Loans held-for-sale, net	144	375
Finance receivables and loans, net	132,316	135,852
FHLB/FRB stock	698	784
Deposit liabilities	47,242	55,187
Short-term borrowings	1,625	3,297
Long-term debt	17,495	17,570
Estimated fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity securities	4,293	4,729
Loans held-for-sale, net	144	375
Finance receivables and loans, net	134,603	137,244
FHLB/FRB stock	698	784
Deposit liabilities	47,403	55,311
Short-term borrowings	1,625	3,335
Long-term debt	18,517	18,538
Estimated fair value | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity securities	0	0
Loans held-for-sale, net	0	0
Finance receivables and loans, net	0	0
FHLB/FRB stock	0	0
Deposit liabilities	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Estimated fair value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity securities	4,293	4,729
Loans held-for-sale, net	0	0
Finance receivables and loans, net	0	0
FHLB/FRB stock	698	784
Deposit liabilities	0	0
Short-term borrowings	0	0
Long-term debt	13,535	12,789
Estimated fair value | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity securities	0	0
Loans held-for-sale, net	144	375
Finance receivables and loans, net	134,603	137,244
FHLB/FRB stock	0	0
Deposit liabilities	47,403	55,311
Short-term borrowings	1,625	3,335
Long-term debt	$ 4,982	$ 5,749

Offsetting Assets and Liabili_3

Offsetting Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Offsetting [Abstract]
Derivative assets, gross amounts of recognized assets/liabilities	$ 12	$ 33
Gross amounts offset on the Consolidated Balance Sheet	0	0
Total assets, net amount	12	33
Financial instruments	0	0
Gross amounts not offset on the Consolidated Balance Sheet	(10)	(31)
Total assets	2	2
Derivative liabilities, gross amounts of recognized assets/liabilities	4	17
Gross amounts offset on the Consolidated Balance Sheet	0	0
Net amounts of assets/liabilities presented on the Consolidated Balance Sheet	4	17
Derivative liabilities, gross amounts not offset on the condensed consolidated balance sheet, financial instruments	0	0
Derivative liabilities in net liability positions	0	(6)
Net amount	4	11
Securities sold under agreements to repurchase		747
Securities sold under agreements to repurchase - gross amounts offset on the consolidated balance sheet		0
Securities sold under agreements to repurchase		747
Security sold under agreement to repurchase, gross amounts not offset on the condensed consolidated balance sheet, financial instruments		0
Security sold under agreement to repurchase, subject to master netting arrangement, collateral, right to reclaim cash not offset		(747)
Securities sold under agreements to repurchase, offset against collateral, net of not subject to master netting arrangement, policy election		0
Gross amounts of recognized assets/liabilities	4	764
Gross amounts offset on the Consolidated Balance Sheet	0	0
Fair value of derivative contracts in payable position	4	764
Financial instruments	0	0
Securities sold under agreements to repurchase, securities loaned, collateral, right to reclaim cash	0	(753)
Security sold under agreement to repurchase, and security loaned, including not subject to master netting arrangement, after offset and deduction	4	11
Derivative assets with no offsetting arrangements	1	2
Derivative liabilities with no offsetting arrangements	$ 4	$ 10
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accrued expenses and other liabilities	Accrued expenses and other liabilities

Segment Information (Details)

Segment Information (Details) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2024 USD ($) segment subsegment	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment									3
Number of operating subsegments | subsegment									2
Total financing revenue and other interest income									$ 14,222	$ 13,958	$ 10,621
Total interest expense									7,472	6,897	2,857
Net depreciation expense on operating lease assets	$ 220	$ 169	$ 155	$ 192	$ 213	$ 206	$ 196	$ 225	736	840	914
Net financing revenue and other interest income									6,014	6,221	6,850
Other revenue									2,167	2,013	1,578
Total net revenue									8,181	8,234	8,428
Provision for credit losses									2,166	1,968	1,399
Compensation and benefits expense									1,842	1,901	1,900
Insurance losses and loss adjustment expenses									544	422	280
Goodwill impairment									118	149	0
Other operating expenses
Technology and communications									438	436	406
Other									2,237	2,255	2,101
Total other operating expenses									2,675	2,691	2,507
Total noninterest expense									5,179	5,163	4,687
Income (loss) from continuing operations before income tax expense									836	1,103	2,342
Total assets	191,836				196,329				191,836	196,329	191,826
Net financing revenue and other interest income after the provision for credit losses									3,800	4,300	5,500
Operating Segments | Automotive Finance operations
Segment Reporting Information [Line Items]
Total financing revenue and other interest income									10,473	9,721	7,990
Total interest expense									4,266	3,364	1,838
Net depreciation expense on operating lease assets									736	840	914
Net financing revenue and other interest income									5,471	5,517	5,238
Other revenue									363	321	306
Total net revenue									5,834	5,838	5,544
Provision for credit losses									1,905	1,618	1,036
Compensation and benefits expense									668	668	629
Insurance losses and loss adjustment expenses									0	0	0
Goodwill impairment									0	0
Other operating expenses
Technology and communications									129	126	117
Other									1,316	1,212	1,104
Total other operating expenses									1,445	1,338	1,221
Total noninterest expense									2,113	2,006	1,850
Income (loss) from continuing operations before income tax expense									1,816	2,214	2,658
Total assets	113,057				115,301				113,057	115,301	111,463
Operating Segments | Insurance operations
Segment Reporting Information [Line Items]
Total financing revenue and other interest income									168	149	126
Total interest expense									54	45	42
Net depreciation expense on operating lease assets									0	0	0
Net financing revenue and other interest income									114	104	84
Other revenue									1,507	1,428	1,023
Total net revenue									1,621	1,532	1,107
Provision for credit losses									0	0
Compensation and benefits expense									108	108	101
Insurance losses and loss adjustment expenses									544	422	280
Goodwill impairment									0	0
Other operating expenses
Technology and communications									19	18	17
Other									782	768	735
Total other operating expenses									801	786	752
Total noninterest expense									1,453	1,316	1,133
Income (loss) from continuing operations before income tax expense									168	216	(26)
Total assets	9,325				9,081				9,325	9,081	8,659
Operating Segments | Corporate Finance operations
Segment Reporting Information [Line Items]
Total financing revenue and other interest income									1,006	980	546
Total interest expense									550	550	206
Net depreciation expense on operating lease assets									0	0	0
Net financing revenue and other interest income									456	430	340
Other revenue									123	104	122
Total net revenue									579	534	462
Provision for credit losses									8	52	43
Compensation and benefits expense									80	78	75
Insurance losses and loss adjustment expenses									0	0	0
Goodwill impairment									0	0
Other operating expenses
Technology and communications									5	5	4
Other									52	45	46
Total other operating expenses									57	50	50
Total noninterest expense									137	128	125
Income (loss) from continuing operations before income tax expense									434	354	294
Total assets	9,704				11,212				9,704	11,212	10,544
Corporate and Other
Segment Reporting Information [Line Items]
Total financing revenue and other interest income									2,575	3,108	1,959
Total interest expense									2,602	2,938	771
Net depreciation expense on operating lease assets									0	0	0
Net financing revenue and other interest income									(27)	170	1,188
Other revenue									174	160	127
Total net revenue									147	330	1,315
Provision for credit losses									253	298	320
Compensation and benefits expense									986	1,047	1,095
Insurance losses and loss adjustment expenses									0	0	0
Goodwill impairment									118	149
Other operating expenses
Technology and communications									285	287	268
Other									87	230	216
Total other operating expenses									372	517	484
Total noninterest expense									1,476	1,713	1,579
Income (loss) from continuing operations before income tax expense									(1,582)	(1,681)	(584)
Total assets	$ 59,750				$ 60,735				$ 59,750	$ 60,735	$ 61,160

Parent Company Condensed Fina_3

Parent Company Condensed Financial Information - Narrative (Details)	Dec. 31, 2024
Parent company
Entity Listings [Line Items]
Threshold for parent company financial information disclosure	25%

Parent Company Condensed Fina_4

Parent Company Condensed Financial Information - Schedule of Condensed Statement of Comprehensive Income (Loss) (Details) - USD ($) $ in Millions		3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
		Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Net financing revenue and other interest income														$ 6,014	$ 6,221	$ 6,850
Total other revenue														2,167	2,013	1,578
Total net revenue														8,181	8,234	8,428
Provision for credit losses														2,166	1,968	1,399
Total noninterest expense														5,179	5,163	4,687
Income (loss) from continuing operations before income tax expense														836	1,103	2,342
Income tax benefit from continuing operations		$ 0	$ 67	$ 60	$ 40	$ 10	$ (51)	$ 96	$ 89					167	144	627
Net income from continuing operations														669	959	1,715	[1]
Loss from discontinued operations, net of tax	[1]													(1)	(2)	(1)
Net income		108	198	219	143	62	285	311	299	$ 362	$ 610	$ 560	$ 895	668	957	1,714
Other comprehensive (loss) income, net of tax														(108)	243	(3,901)
Comprehensive income (loss)		$ (423)	$ 814	$ 199	$ (30)	$ 1,011	$ (617)	$ 224	$ 582					560	1,200	(2,187)
Parent company
Net financing revenue and other interest income														(884)	(945)	(1,000)
Dividends from bank subsidiaries														1,200	1,350	3,150
Dividends from nonbank subsidiaries														0	250	1
Total other revenue														134	169	103
Total net revenue														450	824	2,254
Provision for credit losses														8	(14)	(32)
Total noninterest expense														473	466	665
Income (loss) from continuing operations before income tax expense														(31)	372	1,621
Income tax benefit from continuing operations														(327)	(408)	(253)
Net income from continuing operations														296	780	1,874
Loss from discontinued operations, net of tax														(1)	(2)	(1)
Equity in undistributed earnings of subsidiaries														373	179	(159)
Net income														668	957	1,714
Other comprehensive (loss) income, net of tax														(108)	243	(3,901)
Comprehensive income (loss)														$ 560	$ 1,200	$ (2,187)
[1] Figures in the table may not recalculate exactly due to rounding. Earnings per share is calculated based on unrounded numbers.

Parent Company Condensed Fina_5

Parent Company Condensed Financial Information - Schedule of Condensed Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash and cash equivalents	$ 10,292				$ 6,945
Equity securities	871				810
Finance receivables and loans, net of unearned income	136,030				139,439
Allowance for loan losses	(3,714)				(3,587)				$ (3,711)
Finance receivables and loans, net	132,316				135,852
Other assets	10,660	$ 9,947	$ 9,949	$ 9,420	9,418	$ 9,612	$ 9,155	$ 9,142
Total assets	191,836				196,329				191,826
Long-term debt	17,495				17,570
Interest payable	890				858
Accounts payable	505				509
Accrued expenses and other liabilities	2,814				2,726
Total liabilities	177,933				182,626
Total equity	13,903				13,703				$ 12,859	$ 17,050
Total liabilities and equity	191,836				196,329
Parent company
Cash and cash equivalents	4,579				3,911
Equity securities	1				16
Finance receivables and loans, net of unearned income	810				1,478
Allowance for loan losses	10				22
Finance receivables and loans, net	820				1,500
Bank subsidiaries	13,777				13,629
Nonbank subsidiaries	5,335				4,503
Investment in operating leases, net	10				16
Other assets	1,774				1,536
Total assets	26,547				25,374
Long-term debt	11,068				10,427
Interest payable	134				98
Accrued expenses and other liabilities	357				333
Total liabilities	12,644				11,671
Total equity	13,903				13,703
Total liabilities and equity	26,547				25,374
Deposits by parent at subsidiaries	4,500				3,900
Parent company | Senior Notes
Long-term debt	2,000				2,000
Parent company | Related Party
Intercompany receivables from subsidiaries	251				263
Intercompany debt to subsidiaries	1,046				772
Accounts payable	$ 39				$ 41

Parent Company Condensed Fina_6

Parent Company Condensed Financial Information - Schedule of Condensed Statement of Cash Flows (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended		9 Months Ended		12 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating activities
Net cash provided by operating activities		$ 1,266	$ 1,413	$ 2,720	$ 2,975	$ 3,577	$ 4,609	$ 4,528	$ 4,557	$ 6,247
Investing activities
Proceeds from sales of finance receivables and loans initially held-for-investment								1,400	258	55
Originations and repayments of finance receivables and loans held-for-investment and other, net								3,282	(5,040)	(7,927)
Proceeds from sales of equity securities								915	356	846
Net change in nonmarketable equity investments								84	(73)	27
Other, net								(608)	(579)	(531)
Net cash provided by (used in) investing activities		3,576	(363)	2,590	(2,435)	3,785	(4,144)	4,991	(7,182)	(17,263)
Financing activities
Proceeds from issuance of long-term debt								4,337	5,705	7,125
Repayments of long-term debt								(4,484)	(4,595)	(6,464)
Repurchases of common stock								(38)	(33)	(1,650)
Common stock dividends paid								(372)	(368)	(384)
Preferred stock dividends paid								(110)	(110)	(110)
Net cash (used in) provided by financing activities								(5,566)	3,839	11,575
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Net increase (decrease) in cash and cash equivalents and restricted cash								3,941	1,217	552
Cash and cash equivalents and restricted cash [Roll Forward]
Cash and cash equivalents and restricted cash at beginning of year		7,439	6,222	7,439	6,222	7,439	6,222	7,439	6,222	5,670
Cash and cash equivalents and restricted cash at December 31,								11,380	7,439	6,222
Restricted Cash [Abstract]
Cash and cash equivalents								10,292	6,945
Restricted cash	[1]							1,088	494
Parent company
Operating activities
Net cash provided by operating activities								511	879	1,733
Investing activities
Proceeds from sales of finance receivables and loans initially held-for-investment								6	1	64
Originations and repayments of finance receivables and loans held-for-investment and other, net								(89)	(37)	(7)
Net change in loans — intercompany								(51)	(290)	(65)
Proceeds from sales of equity securities								0	5	1
Capital contributions to subsidiaries								(4)	(8)	0
Returns of contributed capital								0	1	52
Net change in nonmarketable equity investments								0	(2)	8
Other, net								(27)	(10)	(27)
Net cash provided by (used in) investing activities								(165)	(340)	26
Financing activities
Proceeds from issuance of long-term debt								2,050	2,410	1,655
Repayments of long-term debt								(1,482)	(2,087)	(1,088)
Net change in debt — intercompany								274	227	(496)
Repurchases of common stock								(38)	(33)	(1,650)
Common stock dividends paid								(372)	(368)	(384)
Preferred stock dividends paid								(110)	(110)	(110)
Net cash (used in) provided by financing activities								322	39	(2,073)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Net increase (decrease) in cash and cash equivalents and restricted cash								668	578	(314)
Cash and cash equivalents and restricted cash [Roll Forward]
Cash and cash equivalents and restricted cash at beginning of year		$ 3,944	$ 3,366	$ 3,944	$ 3,366	$ 3,944	$ 3,366	3,944	3,366	3,680
Cash and cash equivalents and restricted cash at December 31,								4,612	3,944	$ 3,366
Restricted Cash [Abstract]
Cash and cash equivalents								4,579	3,911
Restricted cash								$ 33	$ 33
[1] Refer to Note 13 for additional details describing the nature of restricted cash and cash equivalent balances.

Guarantees and Commitments - Sc

Guarantees and Commitments - Schedule of Guarantor Obligations (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Guarantor Obligations [Line Items]
Standby letters of credit and other guarantees	$ 0	$ 0
Cash collateral received for standby letters of credit	15
Maximum
Guarantor Obligations [Line Items]
Standby letters of credit and other guarantees	$ 267	$ 259

Guarantees and Commitments - _2

Guarantees and Commitments - Schedule of Financing Commitments (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Guarantor Obligations [Line Items]
Unused revolving credit line commitments and other	$ 10,027	$ 10,658
Commitments to provide capital to investees	1,227	1,191
Construction-lending commitments	166	168
Home equity lines of credit	116	134
Mortgage loan origination commitments	0	29
Unconditionally cancelable unfunded commitments	$ 16,500	18,700
Disposal Group, Held-for-Sale, Not Discontinued Operations | Ally Lending
Guarantor Obligations [Line Items]
Unused revolving credit line commitments and other		$ 68

Guarantees and Commitments - _3

Guarantees and Commitments - Schedule of Contractual Commitments (Details) $ in Millions	Dec. 31, 2024 USD ($)
Guarantees and Product Warranties [Abstract]
2025	$ 255
2026	198
2027	91
2028	42
2029	3
Total future payment obligations	$ 589

Selected Quarterly Financial _3

Selected Quarterly Financial Data (unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2024		Dec. 31, 2023		Dec. 31, 2022
Financing revenue and other interest income
Net depreciation expense on operating lease assets	$ 220	$ 169	$ 155	$ 192	$ 213	$ 206	$ 196	$ 225					$ 736		$ 840		$ 914
Income tax (benefit) expense from continuing operations	0	67	60	40	10	(51)	96	89					167		144		627
Net income	$ 108	$ 198	$ 219	$ 143	$ 62	$ 285	$ 311	$ 299	$ 362	$ 610	$ 560	$ 895	$ 668		$ 957		$ 1,714
Basic earnings per common share
Net income (in dollars per share)	$ 0.26	$ 0.55	$ 0.63	$ 0.38	$ 0.11	$ 0.85	$ 0.93	$ 0.90					$ 1.82	[1]	$ 2.79	[1]	$ 5.06	[1]
Diluted earnings per common share
Net income (in dollars per share)	$ 0.26	$ 0.55	$ 0.62	$ 0.37	$ 0.11	$ 0.84	$ 0.93	$ 0.89					$ 1.80	[1]	$ 2.77	[1]	$ 5.03	[1]
Comprehensive (loss) income	$ (423)	$ 814	$ 199	$ (30)	$ 1,011	$ (617)	$ 224	$ 582					$ 560		$ 1,200		$ (2,187)
Investment in operating leases, net	7,991	7,967	8,126	8,582	9,085	9,509	9,890	10,218	8,126	9,890	7,967	9,509	7,991		9,085
Other assets	10,660	9,947	9,949	9,420	9,418	9,612	9,155	9,142	9,949	9,155	9,947	9,612	10,660		9,418
Retained earnings	270	284	208	111	91	148	(15)	(205)	208	(15)	284	148	270		91
Operating activities
Net income	$ 108	198	219	143	62	285	311	299	362	610	560	895	668		957		1,714
Reconciliation of net income to net cash provided by operating activities
Depreciation and amortization				310				316	582	608	864	912	1,199		1,227		1,327
Net change in
Deferred income taxes				(50)				26	(117)	51	(218)	(73)	(436)		(81)		553
Net cash provided by operating activities				1,266				1,413	2,720	2,975	3,577	4,609	4,528		4,557		6,247
Investing activities
Disposals of operating lease assets				964				725	2,164	1,625	3,113	2,455	3,808		3,228		3,023
Net cash provided by (used in) investing activities				3,576				(363)	2,590	(2,435)	3,785	(4,144)	$ 4,991		(7,182)		$ (17,263)
As Originally Reported
Financing revenue and other interest income
Net depreciation expense on operating lease assets		201	177	204	222	212	200	226							860
Income tax (benefit) expense from continuing operations		(124)	(37)	14	(13)	(68)	74	68							61
Net income		$ 357	$ 294	$ 157	$ 76	$ 296	$ 329	$ 319	451	648	808	944			$ 1,020
Basic earnings per common share
Net income (in dollars per share)		$ 1.07	$ 0.87	$ 0.42	$ 0.16	$ 0.88	$ 0.99	$ 0.96							$ 3
Diluted earnings per common share
Net income (in dollars per share)		$ 1.06	$ 0.86	$ 0.42	$ 0.16	$ 0.88	$ 0.99	$ 0.96							$ 2.98
Comprehensive (loss) income		$ 973	$ 274	$ (16)	$ 1,025	$ (606)	$ 242	$ 602							$ 1,263
Investment in operating leases, net		8,318	8,374	8,731	9,171	9,569	9,930	10,236	8,374	9,930	8,318	9,569			9,171
Other assets		9,907	9,853	9,348	9,395	9,601	9,153	9,144	9,853	9,153	9,907	9,601			9,395
Retained earnings		595	360	188	154	197	23	(185)	360	23	595	197			154
Operating activities
Net income		$ 357	$ 294	157	$ 76	$ 296	$ 329	319	451	648	808	944			1,020
Reconciliation of net income to net cash provided by operating activities
Depreciation and amortization				322				317	616	613	930	923			1,247
Net change in
Deferred income taxes				(1)				24	(44)	53	(201)	(62)			(58)
Net cash provided by operating activities				1,341				1,432	2,916	3,020	3,908	4,680			4,663
Investing activities
Disposals of operating lease assets				889				706	1,968	1,580	2,782	2,384			3,122
Net cash provided by (used in) investing activities				$ 3,501				$ (382)	$ 2,394	$ (2,480)	$ 3,454	$ (4,215)			$ (7,288)
[1] Figures in the table may not recalculate exactly due to rounding. Earnings per share is calculated based on unrounded numbers.

Subsequent Events (Details)

Subsequent Events (Details) - $ / shares			12 Months Ended
		Jan. 16, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Subsequent Event [Line Items]
Cash dividends declared per common share (in dollars per share)	[1]		$ 1.20	$ 1.20	$ 1.20
Subsequent event
Subsequent Event [Line Items]
Cash dividends declared per common share (in dollars per share)		$ 0.30
[1] Figures in the table may not recalculate exactly due to rounding. Earnings per share is calculated based on unrounded numbers.