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Regulatory and Capital Adequacy (Tables) | 12 Months Ended
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Dec. 31, 2022
Mortgage Banking [Abstract] |
Schedule of Comparison of Capital Ratios | The following table provides a comparison of our regulatory capital amounts and ratios under the Basel III standardized approach subject to the applicable transition provisions, the regulatory minimum capital adequacy ratios and the applicable well-capitalized standard for each ratio as of December 31, 2022 and 2021. Table 11.1: Capital Ratios Under Basel III(1)
|  | December 31, 2022 |  | December 31, 2021
(Dollars in millions) |  | Capital Amount |  | Capital Ratio |  | Minimum Capital Adequacy |  | Well- Capitalized |  | Capital Amount |  | Capital Ratio |  | Minimum Capital Adequacy |  | Well- Capitalized
Capital One Financial Corp: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common equity Tier 1 capital(2) |  | $ | 44,731 |  |  | 12.5% |  | 4.5% |  | N/A |  | $ | 43,501 |  |  | 13.1% |  | 4.5% |  | N/A
Tier 1 capital(3) |  | 49,576 |  |  | 13.9 |  | 6.0 |  | 6.0% |  | 48,346 |  |  | 14.5 |  | 6.0 |  | 6.0%
Total capital(4) |  | 56,714 |  |  | 15.8 |  | 8.0 |  | 10.0 |  | 56,089 |  |  | 16.9 |  | 8.0 |  | 10.0
Tier 1 leverage(5) |  | 49,576 |  |  | 11.1 |  | 4.0 |  | N/A |  | 48,346 |  |  | 11.6 |  | 4.0 |  | N/A
Supplementary leverage(6) |  | 49,576 |  |  | 9.5 |  | 3.0 |  | N/A |  | 48,346 |  |  | 9.9 |  | 3.0 |  | N/A
CONA: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common equity Tier 1 capital(2) |  | 46,630 |  |  | 13.1 |  | 4.5 |  | 6.5 |  | 26,699 |  |  | 11.1 |  | 4.5 |  | 6.5
Tier 1 capital(3) |  | 46,630 |  |  | 13.1 |  | 6.0 |  | 8.0 |  | 26,699 |  |  | 11.1 |  | 6.0 |  | 8.0
Total capital(4) |  | 51,165 |  |  | 14.4 |  | 8.0 |  | 10.0 |  | 29,449 |  |  | 12.2 |  | 8.0 |  | 10.0
Tier 1 leverage(5) |  | 46,630 |  |  | 10.5 |  | 4.0 |  | 5.0 |  | 26,699 |  |  | 7.4 |  | 4.0 |  | 5.0
Supplementary leverage(6) |  | 46,630 |  |  | 9.0 |  | 3.0 |  | N/A |  | 26,699 |  |  | 6.6 |  | 3.0 |  | N/A
__________ (1)Capital requirements that are not applicable are denoted by “N/A.” (2)Common equity Tier 1 capital ratio is a regulatory capital measure calculated based on common equity Tier 1 capital divided by risk-weighted assets. (3)Tier 1 capital ratio is a regulatory capital measure calculated based on Tier 1 capital divided by risk-weighted assets. (4)Total capital ratio is a regulatory capital measure calculated based on total capital divided by risk-weighted assets. (5)Tier 1 leverage ratio is a regulatory capital measure calculated based on Tier 1 capital divided by adjusted average assets. (6)Supplementary leverage ratio is a regulatory capital measure calculated based on Tier 1 capital divided by total leverage exposure.

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958570-112826 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 + Details
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