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Quarterly Results (unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2025
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Information |
|  | First quarter |  | Second quarter |  | Third quarter |  | Fourth quarter
($ in millions, except per share data) |  | 2025 |  | 2024 |  | 2025 |  | 2024 |  | 2025 |  | 2024 |  | 2025 |  | 2024
Revenues |  | $ | 16,452 |  |  | $ | 15,259 |  |  | $ | 16,633 |  |  | $ | 15,714 |  |  | $ | 17,255 |  |  | $ | 16,627 |  |  | $ | 17,345 |  |  | $ | 16,506 |
Net income applicable to common shareholders |  | 566 |  |  | 1,189 |  |  | 2,079 |  |  | 301 |  |  | 3,717 |  |  | 1,161 |  |  | 3,803 |  |  | 1,899 |
Net income applicable to common shareholders per common share - Basic |  | 2.13 |  |  | 4.51 |  |  | 7.86 |  |  | 1.14 |  |  | 14.13 |  |  | 4.39 |  |  | 14.55 |  |  | 7.16 |
Net income applicable to common shareholders per common share - Diluted |  | 2.11 |  |  | 4.46 |  |  | 7.76 |  |  | 1.13 |  |  | 13.95 |  |  | 4.33 |  |  | 14.37 |  |  | 7.07 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 270 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482964/270-10-50-1 + Details
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