XML 39 R29.htm IDEA: XBRL DOCUMENT
v3.26.1

Acquisition (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2026
Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] |
Business Combination | The following table provides the preliminary allocation of the purchase consideration to the assets acquired and liabilities assumed from FineMark as of January 1, 2026:
(In thousands) | Fair Value
Purchase consideration |
Fair value of common stock issued | $ | 519,865 |
Fair value of equity interest in FineMark held by the Company prior to acquisition | 4,614 |
Cash for fractional shares | 8 |
Fair value of total consideration | $ | 524,487 |
Assets |
Loans, net of allowance for credit losses on loans | $ | 2,607,866 |
Trading securities | 541,967 |
Other investments | 27,180 |
Interest earning deposits with banks | 483,821 |
Cash and due from banks | 17,547 |
Premises and equipment | 47,074 |
Identifiable intangible assets | 138,082 |
Other assets | 102,979 |
Total assets acquired | $ | 3,966,516 |
Liabilities |
Non-interest bearing deposits | $ | 425,140 |
Interest-bearing deposits | 2,684,381 |
Repurchase agreements | 63,018 |
Other borrowings | 351,458 |
Other liabilities | 25,298 |
Total liabilities assumed | $ | 3,549,295 |
Preliminary fair value of net assets acquired | $ | 417,221 |
Preliminary goodwill | 107,266 |
Schedule of Financing Receivables, Purchased Seasoned Loans | The following table includes the fair value and unpaid principal balance of the acquired loans as of January 1, 2026:
(In thousands) | Unpaid principal balance | Premium / (discount) | Loans | Allowance for credit losses | Net loans
Purchased seasoned loans | $ | 2,351,772 |  | $ | (76,873) |  | $ | 2,274,899 |  | $ | (19,870) |  | $ | 2,255,029 |
PCD loans | 368,533 |  | (12,738) |  | 355,795 |  | (2,958) |  | 352,837 |
Total | $ | 2,720,305 |  | $ | (89,611) |  | $ | 2,630,694 |  | $ | (22,828) |  | $ | 2,607,866 |
Business Combination, Pro Forma Information | The following table presents pro forma combined information as if FineMark had been acquired on January 1, 2025. These results combine the historical results of FineMark into the Company’s consolidated statement of income, and while adjustments were made for the estimated impact of certain fair value adjustments and other acquisition-related activity, the results do not necessarily reflect the results of operations that would have occurred had the acquisition taken place on January 1, 2025. Furthermore, cost savings and other business synergies related to the acquisition are not reflected in the pro forma combined amounts.
|  |  |  | Pro Forma Combined Results
|  |  | For the Three Months Ended
(In thousands) |  |  |  | March 31, 2026 | March 31, 2025
Total revenue * |  |  |  | $ | 468,428 |  | $ | 455,698 |
Net Income |  |  |  | 150,695 |  | 135,690 |
*Total revenue is comprised of net interest income and non-interest income.

X
- Definition Schedule of Financing Receivables, Purchased Seasoned Loans + References No definition available. + Details
Name: | cbsh_ScheduleOfFinancingReceivablesPurchasedSeasonedLoansTableTextBlock
Namespace Prefix: | cbsh_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of pro forma revenue and earnings for business combination or aggregate of series of individually immaterial business combinations. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-8 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 49 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479303/805-10-55-49 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-3 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(2) -SubTopic 10 -Topic 805 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(3) -SubTopic 10 -Topic 805 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-2 + Details
Name: | us-gaap_BusinessAcquisitionProFormaInformationTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BusinessCombinationAndAssetAcquisitionAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of business combination. Includes, but is not limited to, recognized asset and liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-8 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 41 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479303/805-10-55-41 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-2 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479581/805-30-50-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479581/805-30-50-1 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-1 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-3 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-2 + Details
Name: | us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration