XML 80 R71.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Segments (Schedule Of Financial Information By Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net interest income | $ 246,373 | $ 214,037 | $ 687,544 |  | $ 627,767 |
Provision for credit losses | (15,290) | 7,385 | (12,594) |  | 59,272 |
Non-interest income | 138,514 | 137,506 | 409,710 |  | 412,694 |
INVESTMENT SECURITIES GAINS, NET | 3,410 | 13,108 | 11,602 | [1] | 39,765 | [1]
Non-interest expense | (212,884) | (211,620) | (632,037) |  | (602,319) |
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest | 160,123 | 160,416 | 464,225 |  | 537,179 |
Consumer segment |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net interest income | 86,232 | 80,411 | 249,761 |  | 239,157 |
Provision for credit losses | (4,305) | (3,557) | (12,727) |  | (19,122) |
Non-interest income | 30,264 | 35,758 | 89,542 |  | 110,911 |
INVESTMENT SECURITIES GAINS, NET | 0 | 0 | 0 |  | 0 |
Non-interest expense | (76,832) | (75,996) | (225,232) |  | (220,280) |
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest | 35,359 | 36,616 | 101,344 |  | 110,666 |
Commercial segment |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net interest income | 114,087 | 115,529 | 333,263 |  | 340,279 |
Provision for credit losses | (506) | (69) | (651) |  | 4,856 |
Non-interest income | 57,115 | 52,092 | 167,581 |  | 155,079 |
INVESTMENT SECURITIES GAINS, NET | 0 | 0 | 0 |  | 0 |
Non-interest expense | (91,372) | (84,601) | (272,224) |  | (246,501) |
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest | 79,324 | 82,951 | 227,969 |  | 253,713 |
Wealth segment |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net interest income | 18,637 | 18,075 | 56,731 |  | 53,186 |
Provision for credit losses | 5 | 9 | 2 |  | 10 |
Non-interest income | 53,862 | 55,241 | 161,051 |  | 158,731 |
INVESTMENT SECURITIES GAINS, NET | 0 | 0 | 0 |  | 0 |
Non-interest expense | (36,194) | (34,285) | (108,967) |  | (101,377) |
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest | 36,310 | 39,040 | 108,817 |  | 110,550 |
Segment Totals |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net interest income | 218,956 | 214,015 | 639,755 |  | 632,622 |
Provision for credit losses | (4,806) | (3,617) | (13,376) |  | (14,256) |
Non-interest income | 141,241 | 143,091 | 418,174 |  | 424,721 |
INVESTMENT SECURITIES GAINS, NET | 0 | 0 | 0 |  | 0 |
Non-interest expense | (204,398) | (194,882) | (606,423) |  | (568,158) |
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest | 150,993 | 158,607 | 438,130 |  | 474,929 |
Other/Elimination |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net interest income | 27,417 | 22 | 47,789 |  | (4,855) |
Provision for credit losses | (10,484) | 11,002 | 782 |  | 73,528 |
Non-interest income | (2,727) | (5,585) | (8,464) |  | (12,027) |
INVESTMENT SECURITIES GAINS, NET | 3,410 | 13,108 | 11,602 |  | 39,765 |
Non-interest expense | (8,486) | (16,738) | (25,614) |  | (34,161) |
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest | $ 9,130 | $ 1,809 | $ 26,095 |  | $ 62,250 |
[1] | Available for sale debt securities, equity securities, and other securities.

X
- Definition Amount of realized and unrealized gain (loss) on investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27405-111563 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(c),9(a)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
Name: | us-gaap_GainLossOnInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=126941158&loc=d3e41242-110953 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(10)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(8)) -URI https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-05(b)(2)) -URI https://asc.fasb.org/extlink&oid=120399901&loc=d3e537907-122884 Reference 9: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8924-108599 Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(15)) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net amount of operating interest income (expense). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.10) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
Name: | us-gaap_InterestIncomeExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total aggregate amount of all noninterest expense. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.14) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
Name: | us-gaap_NoninterestExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
Name: | us-gaap_NoninterestIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of expense related to estimated loss from loan and lease transactions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
Name: | us-gaap_ProvisionForLoanAndLeaseLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cbsh_ConsumerSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cbsh_CommercialSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cbsh_WealthSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cbsh_SegmentTotalsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cbsh_OtherEliminationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |