XML 75 R53.htm IDEA: XBRL DOCUMENT
v3.24.3

Loans Composition (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 29,990,897 | $ 29,216,218
Commercial and Industrial Sector [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 10,258,899 | 9,731,555
Commercial Real Estate Owner Occupied Portfolio [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 1,120,849 | 1,061,700
Commercial And Business Lending [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 11,379,748 | 10,793,255
Commercial Real Estate Investor Portfolio Segment [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 5,070,635 | 5,124,245
Construction Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 2,114,300 | 2,271,398
Commercial Real Estate Portfolio Segment [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 7,184,934 | 7,395,644
Commercial Portfolio Segment [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 18,564,683 | 18,188,898
Residential Mortgage [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 7,803,083 | 7,864,891
Automobile Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 2,708,946 | 2,256,162
Home Equity Line of Credit [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 651,379 | 628,526
Other Consumer [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 262,806 | 277,740
Consumer Portfolio Segment [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 11,426,214 | $ 11,027,319

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

X
- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-4 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 + Details
Name: | us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialAndIndustrialSectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=asb_CommercialRealEstateOwnerOccupiedPortfolioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=asb_CommercialAndBusinessLendingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=asb_CommercialRealEstateInvestorPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_AutomobileLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=asb_OtherConsumerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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