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Common Stock (Tables) | 3 Months Ended
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Mar. 31, 2026
Common Stock [Abstract] |
Summary Of Components Used To Calculate Basic And Diluted Income Per Share | Presented below is a summary of the components used to calculate basic and diluted income per share. The Company applies the two-class method of computing income per share, as nonvested restricted stock awards that pay nonforfeitable common stock dividends are considered securities which participate in undistributed earnings with common stock. The two-class method requires the calculation of separate income per share amounts for the nonvested restricted stock awards and for common stock. Income per share attributable to common stock is shown in the table below. Nonvested share-based awards are further discussed in Note 14.
|  |  | For the Three Months Ended March 31
(In thousands, except per share data) |  |  |  | 2026 | 2025
Basic income per common share: |  |  |  |  |
Net income attributable to Commerce Bancshares, Inc. |  |  |  | $ | 141,623 |  | $ | 131,592 |
Less income allocated to nonvested restricted stock awards |  |  |  | 1,314 |  | 1,259 |
Net income allocated to common stock |  |  |  | $ | 140,309 |  | $ | 130,333 |
Weighted average common shares outstanding |  |  |  | 145,786 |  | 139,563 |
Basic income per common share |  |  |  | $ | .96 |  | $ | .93 |
Diluted income per common share: |  |  |  |  |
Net income attributable to Commerce Bancshares, Inc. |  |  |  | $ | 141,623 |  | $ | 131,592 |
Less income allocated to nonvested restricted stock awards |  |  |  | 1,313 |  | 1,258 |
Net income allocated to common stock |  |  |  | $ | 140,310 |  | $ | 130,334 |
Weighted average common shares outstanding |  |  |  | 145,786 |  | 139,563 |
Net effect of assumed exercise of stock appreciation rights and restricted stock units - based on the treasury stock method using the average market price for the respective periods |  |  |  | 71 |  | 162 |
Weighted average diluted common shares outstanding |  |  |  | 145,857 |  | 139,725 |
Diluted income per common share |  |  |  | $ | .96 |  | $ | .93 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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