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Common Stock (Tables) | 9 Months Ended
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Sep. 30, 2022
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 share-based 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 share-based 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 13.
| For the Three Months Ended September 30 |  | For the Nine Months Ended September 30
(In thousands, except per share data) | 2022 | 2021 |  | 2022 | 2021
Basic income per common share: |  |  |  |  |
Net income attributable to Commerce Bancshares, Inc. | $ | 122,823 |  | $ | 122,561 |  |  | $ | 356,771 |  | $ | 415,859 |
Less income allocated to nonvested restricted stock | 1,119 |  | 1,114 |  |  | 3,241 |  | 3,792 |
Net income allocated to common stock | $ | 121,704 |  | $ | 121,447 |  |  | $ | 353,530 |  | $ | 412,067 |
Weighted average common shares outstanding | 118,895 |  | 121,628 |  |  | 119,619 |  | 121,889 |
Basic income per common share | $ | 1.03 |  | $ | 1.00 |  |  | $ | 2.96 |  | $ | 3.38 |
Diluted income per common share: |  |  |  |  |
Net income attributable to Commerce Bancshares, Inc. | $ | 122,823 |  | $ | 122,561 |  |  | $ | 356,771 |  | $ | 415,859 |
Less income allocated to nonvested restricted stock | 1,118 |  | 1,112 |  |  | 3,236 |  | 3,785 |
Net income allocated to common stock | $ | 121,705 |  | $ | 121,449 |  |  | $ | 353,535 |  | $ | 412,074 |
Weighted average common shares outstanding | 118,895 |  | 121,628 |  |  | 119,619 |  | 121,889 |
Net effect of the assumed exercise of stock-based awards - based on the treasury stock method using the average market price for the respective periods | 264 |  | 253 |  |  | 274 |  | 294 |
Weighted average diluted common shares outstanding | 119,159 |  | 121,881 |  |  | 119,893 |  | 122,183 |
Diluted income per common share | $ | 1.02 |  | $ | .99 |  |  | $ | 2.95 |  | $ | 3.37 |

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- Definition Common Stock [Abstract] + References No definition available. + Details
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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 -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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