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Regulatory Capital and Other Regulatory Matters (Tables) | 3 Months Ended
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Mar. 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.
|  | March 31, 2024 |  | December 31, 2023 |  | Required minimum (a) |  | Well-capitalized minimum
($ in millions) |  | Amount |  | Ratio |  | Amount |  | Ratio |
Capital ratios |  |  |  |  |  |  |  |  |  |  |  |
Common Equity Tier 1 (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |
Ally Financial Inc. |  | $ | 14,905 |  |  | 9.41 | % |  | $ | 15,129 |  |  | 9.36 | % |  | 4.50 | % |  | (b)
Ally Bank |  | 17,290 |  |  | 11.53 |  |  | 17,217 |  |  | 11.24 |  |  | 4.50 |  |  | 6.50 | %
Tier 1 (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |
Ally Financial Inc. |  | $ | 17,171 |  |  | 10.84 | % |  | $ | 17,392 |  |  | 10.76 | % |  | 6.00 | % |  | 6.00 | %
Ally Bank |  | 17,290 |  |  | 11.53 |  |  | 17,217 |  |  | 11.24 |  |  | 6.00 |  |  | 8.00 |
Total (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |
Ally Financial Inc. |  | $ | 19,802 |  |  | 12.51 | % |  | $ | 20,055 |  |  | 12.41 | % |  | 8.00 | % |  | 10.00 | %
Ally Bank |  | 19,180 |  |  | 12.80 |  |  | 19,144 |  |  | 12.50 |  |  | 8.00 |  |  | 10.00 |
Tier 1 leverage (to adjusted quarterly average assets) (c) |  |  |  |  |  |  |  |  |  |  |  |
Ally Financial Inc. |  | $ | 17,171 |  |  | 8.63 | % |  | $ | 17,392 |  |  | 8.67 | % |  | 4.00 | % |  | (b)
Ally Bank |  | 17,290 |  |  | 9.19 |  |  | 17,217 |  |  | 9.07 |  |  | 4.00 |  |  | 5.00 | %
(a)In addition to the minimum risk-based capital requirements for the Common Equity Tier 1 capital, Tier 1 capital, and total capital ratios, Ally and Ally Bank were required to maintain a minimum capital conservation buffer of 2.5% at both March 31, 2024, and December 31, 2023. (b)Currently, there is no ratio component for determining whether a BHC is “well-capitalized.” (c)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 stockholders.
|  | 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 |
(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 304 million as of March 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 the first quarter of 2024, and at this time, the Board has not authorized a stock-repurchase program for 2024. (c)On April 15, 2024, our Board declared a quarterly cash dividend of $0.30 per share on all common stock, payable on May 15, 2024, to stockholders of record at the close of business on May 1, 2024.

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1B + Details
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