XML 46 R36.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Loans and Allowance for Credit Losses - Summary of Amortized Cost of Nonaccrual Loans with No Related Allowance (Detail) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable Nonaccrual Status [Line Items] |  |
Nonaccrual Loans | $ 19,817 | $ 92,300
Amortized Cost of Nonaccrual Loans with no related Allowance | 17,164 | 85,948
Commercial and Industrial Portfolio [Member] |  |
Financing Receivable Nonaccrual Status [Line Items] |  |
Nonaccrual Loans | 11,386 | 82,845
Amortized Cost of Nonaccrual Loans with no related Allowance | 9,400 | 76,493
Commercial Real Estate Portfolio Segment |  |
Financing Receivable Nonaccrual Status [Line Items] |  |
Nonaccrual Loans | 2,596 | 4,688
Amortized Cost of Nonaccrual Loans with no related Allowance | 2,596 | 4,688
Consumer Real Estate Portfolio [Member] |  |
Financing Receivable Nonaccrual Status [Line Items] |  |
Nonaccrual Loans | 4,902 | 4,210
Amortized Cost of Nonaccrual Loans with no related Allowance | 4,235 | 4,210
Consumer Portfolio [Member] |  |
Financing Receivable Nonaccrual Status [Line Items] |  |
Nonaccrual Loans | 553 | 75
Amortized Cost of Nonaccrual Loans with no related Allowance | 553 | 75
Credit Cards Portfolio [Member] |  |
Financing Receivable Nonaccrual Status [Line Items] |  |
Nonaccrual Loans | 356 | 457
Amortized Cost of Nonaccrual Loans with no related Allowance | 356 | 457
Leases and Other Portfolio [Member] |  |
Financing Receivable Nonaccrual Status [Line Items] |  |
Nonaccrual Loans | 24 | 25
Amortized Cost of Nonaccrual Loans with no related Allowance | $ 24 | $ 25

X
- Definition Amortized cost of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447 + Details
Name: | us-gaap_FinancingReceivableNonaccrualNoAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_FinancingReceivableNonaccrualStatusLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (3) Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (2) + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=umbf_CommercialAndIndustrialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=umbf_ConsumerRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=umbf_CreditCardsPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=umbf_LeasesAndOtherPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |