Basis of Presentation (Policies)	9 Months Ended
Sep. 30, 2018
Revenue From Contract With Customer [Abstract]
Basis Of Presentation	The accompanying unaudited consolidated financial statements include the accounts of Old National Bancorp and its wholly-owned affiliates (hereinafter collectively referred to as “Old National”) and have been prepared in conformity with accounting principles generally accepted in the United States of America and prevailing practices within the banking industry. Such principles require management to make estimates and assumptions that affect the reported amounts of assets, liabilities, and the disclosures of contingent assets and liabilities at the date of the financial statements and amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. In the opinion of management, the consolidated financial statements contain all the normal and recurring adjustments necessary for a fair statement of the financial position of Old National as of September 30, 2018 and 2017, and December 31, 2017, and the results of its operations for the three and nine months ended September 30, 2018 and 2017. Interim results do not necessarily represent annual results. These financial statements should be read in conjunction with Old National’s Annual Report for the year ended December 31, 2017. All significant intercompany transactions and balances have been eliminated. Certain prior year amounts have been reclassified to conform to the 2018 presentation. Such reclassifications had no effect on net income or shareholders’ equity and were insignificant amounts.
Revenue Recognition	In May 2014, the FASB issued an update (ASU No. 2014-09, Revenue from Contracts with Customers) creating FASB Topic 606, Revenue from Contracts with Customers. The guidance in this update affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards (for example, insurance contracts or lease contracts). The scope of this update explicitly excludes net interest income, as well as other revenues from transactions involving financial instruments, such as loans and securities. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance provides steps to follow to achieve the core principle. An entity should disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. The amendments in this update became effective for annual periods and interim periods within those annual periods beginning after December 15, 2017 and did not have a material impact on the consolidated financial statements. Old National finalized the in-depth assessment and identified the revenue line items within the scope of this new guidance. For Old National, the revenue streams that are affected by this update are presented within noninterest income. In March 2016, the FASB issued ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net). The amendments relate to when another party, along with the entity, is involved in providing a good or service to a customer. Topic 606 requires an entity to determine whether the nature of its promise is to provide that good or service to the customer (that is, the entity is a principal) or to arrange for the good or service to be provided to the customer by the other party (that is, the entity is an agent). This determination is based upon whether the entity controls the good or the service before it is transferred to the customer. Topic 606 includes indicators to assist in this evaluation. The amendments in this update affect the guidance in ASU No. 2014-09 above. The effective date is the same as the effective date of ASU No. 2014-09. In April 2016, the FASB issued ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing. The amendments clarify the following two aspects of Topic 606: identifying performance obligations, and the licensing implementation guidance. Before an entity can identify its performance obligations in a contract with a customer, the entity first identifies the promised goods or services in the contract. The amendments in this update are expected to reduce the cost and complexity of applying the guidance on identifying promised goods or services. To identify performance obligations in a contract, an entity evaluates whether promised goods and services are distinct. Topic 606 includes two criteria for assessing whether promises to transfer goods or services are distinct. One of those criteria is that the promises are separately identifiable. This update will improve the guidance on assessing that criterion. Topic 606 also includes implementation guidance on determining whether as entity’s promise to grant a license provides a customer with either a right to use the entity’s intellectual property, which is satisfied at a point in time, or a right to access the entity’s intellectual property, which is satisfied over time. The amendments in this update are intended to improve the operability and understandability of the licensing implementation guidance. The amendments in this update affect the guidance in ASU No. 2014-09 above. The effective date is the same as the effective date of ASU No. 2014-09. In May 2016, the FASB issued ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients. The amendments do not change the core revenue recognition principle in Topic 606. The amendments provide clarifying guidance in certain narrow areas and add some practical expedients. In December 2016, the FASB issued ASU No. 2016-20, Revenue from Contracts with Customers (Topic 606): Technical Corrections and Improvements. The FASB decided to issue a separate update for technical corrections and improvements to Topic 606 and other Topics amended by ASU No. 2014-09 to increase awareness of the proposals and to expedite improvements to ASU No. 2014-09. The amendment affects narrow aspects of the guidance issued in ASU No. 2014-09. On January 1, 2018, Old National adopted ASU 2014-09, Revenue from Contracts with Customers and all subsequent amendments to the ASU (collectively, “Topic 606”) utilizing the modified retrospective application. A significant majority of Old National’s revenues are not subject to the new guidance. Services within the scope of Topic 606 include wealth management fees, service charges on deposit accounts, debit card and ATM fees, and investment product fees. Old National enters into various contracts with customers to provide these traditional banking services on a routine basis. Old National’s performance obligations are generally service-related and provided on a daily, monthly, or quarterly basis. The performance obligations are generally satisfied as services are rendered and the fees are collected at such time, or shortly thereafter. It is not typical for contracts to require significant judgment to determine the transaction price. The implementation of this update did not have a material impact on the measurement, timing, or recognition of revenue. Accordingly, no cumulative effect adjustment to opening retained earnings was deemed necessary. Results for reporting periods beginning after adoption are presented under Topic 606. As allowed under the update, results for prior periods continue to be reported under the accounting standards in effect for those periods.
Recent Accounting Pronouncements	Accounting Guidance Adopted in 2018 FASB ASC 825 – In January 2016, the FASB issued an update (ASU No. 2016-01, Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities). The amendments in this update impact public business entities as follows: (1) require equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income; (2) simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment; and when a qualitative assessment indicates that impairment exists, an entity is required to measure the investment at fair value; (3) eliminate the requirement to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; (4) require entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (5) require an entity to present separately in other comprehensive income the portion of the total change in fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (6) require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements; and (7) clarify that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets. The amendments in this update became effective for annual periods and interim periods within those annual periods beginning after December 15, 2017 and did not have a material impact on the consolidated financial statements. FASB ASC 740 – In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory. Current guidance prohibits the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset has been sold to an outside party. This prohibition on recognition is an exception to the principle of comprehensive recognition of current and deferred income taxes in generally accepted accounting principles. The exception has led to diversity in practice and is a source of complexity in financial reporting. FASB decided that an entity should recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Consequently, the amendments in this update eliminate the exception for an intra-entity transfer of an asset other than inventory. The amendments in this update do not include new disclosure requirements; however, existing disclosure requirements might be applicable when accounting for the current and deferred income taxes for an intra-entity transfer of an asset other than inventory. The amendments in this update became effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods. The amendments in this update were applied on a modified retrospective basis through a cumulative-effect reduction of $1.0 million directly to retained earnings as of the beginning of 2018. FASB ASC 805 – In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business. The amendments in this update provide a more robust framework to use in determining when a set of assets and activities is a business. Because the current definition of a business is interpreted broadly and can be difficult to apply, stakeholders indicated that analyzing transactions is inefficient and costly and that the definition does not permit the use of reasonable judgment. The amendments provide more consistency in applying the guidance, reduce the costs of application, and make the definition of a business more operable. The amendments in this update became effective for annual periods and interim periods within those annual periods beginning after December 15, 2017. Old National has completed its evaluation of adopting the new guidance on the consolidated financial statements and there is no impact to record. FASB ASC 610 – In February 2017, the FASB issued ASU No. 2017-05, Other Income – Gains and Losses from the Derecognition of Nonfinancial Assets (Topic 610): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets. Subtopic 610-20 was originally issued as part of ASU No. 2014-09 to provide guidance for recognizing gains and losses from the transfer of nonfinancial assets in contracts with noncustomers. This update was issued to help clarify uncertainties and complexities of ASU 2014-09. The amendments in this update define the term in substance nonfinancial asset, in part, as a financial asset promised to a counterparty in a contract if substantially all of its fair value of the assets (recognized and unrecognized) that are promised to the counterparty in the contract is concentrated in nonfinancial assets. If substantially all of the fair value of the assets that are promised to the counterparty in a contract is concentrated in nonfinancial assets, then all of the financial assets promised to the counterparty are in substance nonfinancial assets. The amendments in this update also clarify that nonfinancial assets within the scope of Subtopic 610-20 may include nonfinancial assets transferred within a legal entity to a counterparty. The amendments in this update require an entity to derecognize a distinct nonfinancial asset or distinct in substance nonfinancial asset in a partial sale transaction when it (1) does not have (or ceases to have) a controlling financial interest in the legal entity that holds the asset in accordance with Topic 810 and (2) transfers control of the asset in accordance with Topic 606. Once an entity transfers control of a distinct nonfinancial asset or distinct in substance nonfinancial asset, it is required to measure any noncontrolling interest it receives (or retains) at fair value. The amendments were effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period and did not have a material impact on the consolidated financial statements. FASB ASC 715 – In March 2017, the FASB issued ASU No. 2017-07, Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The amendments in this update require that an employer disaggregate the service cost component from the other components of net benefit cost. The amendments also provide explicit guidance on how to present the service cost component and the other components of net benefit cost in the income statement and allow only the service cost component of net benefit cost to be eligible for capitalization. The amendments in this update improve the consistency, transparency, and usefulness of financial information to users that have communicated that the service cost component generally is analyzed differently from the other components of net benefit cost. The amendments in this update became effective for annual periods and interim periods within those annual periods beginning after December 15, 2017 and did not have a material impact on the consolidated financial statements. FASB ASC 718 – In May 2017, the FASB issued ASU No. 2017-09, Compensation – Stock Compensation (Topic 718): Scope of Modification Accounting. The amendments in this update provide guidance about which changes to the terms and conditions of a share-based payment award require an entity to apply modification accounting. An entity should account for the effect of a modification unless all the following are met: (1) the fair value of the modified award is the same as the fair value of the original award immediately before the original award is modified – if the modification does not affect any of the inputs to the valuation technique that the entity uses to value the award, the entity is not required to estimate the value immediately before and after the modification; (2) the vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the original award is modified; (3) the classification of the modified award as an equity instrument or a liability instrument is the same as the classification of the original award immediately before the original award is modified. The amendments in this update became effective for annual periods and interim periods within those annual periods beginning after December 15, 2017 and did not have a material impact on the consolidated financial statements. FASB ASC 815 – In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. The amendments in the update make certain targeted improvements to simplify the application of the hedge accounting guidance in GAAP. The amendments in this update better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. To meet that objective, the amendments expand and refine hedge accounting for both nonfinancial and financial risk components and align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. This update addresses several limitations that GAAP placed on the risk components, how an entity can designate the hedged item in a fair value hedge of interest rate risk, and how an entity can measure changes in fair value of the hedged item attributable to interest rate risk. In addition to the amendments to the designation and measurement guidance for qualifying hedging relationships, the amendments in this update also align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements to increase the understandability of the results of an entity’s intended hedging strategies. The amendments in this update require an entity to present the earnings effect of the hedging instrument in the same income statement line item in which the earnings effect of the hedged item is reported. Prior to the issuance of this update, GAAP provided special hedge accounting only for the portion of the hedge deemed to be “highly effective” and required an entity to separately reflect the amount by which the hedging instrument did not offset the hedged item, which is referred to as the “ineffective” amount. However, the concept and reporting of hedge ineffectiveness were difficult for financial statement users to understand and, at times, for preparers to explain. The FASB decided on an approach that no longer separately measures and reports hedge ineffectiveness. This update also includes certain targeted improvements to ease the application of current guidance related to the assessment of hedge effectiveness. Prior to the issuance of this update, GAAP contained specific requirements for initial and ongoing quantitative hedge effectiveness testing and strict requirements for specialized effectiveness testing methods that allowed an entity to forgo quantitative hedge effectiveness assessments for qualifying relationships. The amendments in this update become effective for annual periods and interim periods within those annual periods beginning after December 15, 2018. Early adoption is permitted in any interim period. Management elected to early adopt this update effective January 1, 2018 using the modified retrospective method. The impact of the adoption resulted in a reduction to Old National’s opening retained earnings of $3.2 million. In addition, as permitted by the amendments in the update, Old National reclassified $447.0 million in state and political subdivision securities with unrealized holding gains of $26.1 million from the held-to-maturity portfolio to the available-for-sale portfolio. FASB ASC 220 – In February 2018, the FASB issued ASU No. 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The amendments in this ASU help organizations address certain stranded income tax effects in AOCI resulting from the Tax Cuts and Jobs Act. The ASU provides financial statement preparers with an option to reclassify stranded tax effects within AOCI to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act (or portion thereof) is recorded. The amendments are effective for all organizations for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. Management has elected to early adopt this update effective January 1, 2018, which resulted in a reclassification that decreased beginning accumulated other comprehensive income and increased beginning retained earnings by $10.8 million. FASB ASC 825 – In February 2018, the FASB issued an update (ASU No. 2018-03, Technical Corrections and Improvements to Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities). The amendments in this update clarified the guidance in ASU No. 2016-01 specifically for equity securities without a readily determinable fair value and financial liabilities for which the fair value option is elected. The amendments in this update became effective for annual periods beginning after December 15, 2017 and interim periods within those fiscal years beginning after June 15, 2018 and did not have a material impact on the consolidated financial statements. Accounting Guidance Issued But Not Yet Adopted FASB ASC 842 – In February 2016, the FASB issued its new lease accounting guidance in ASU No. 2016-02, Leases (Topic 842). Under the new guidance, lessees will be required to recognize the following for all leases, with the exception of short-term leases, at the commencement date: (1) a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and (2) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged. In July 2018, the FASB issued ASU No. 2018-10, Codification Improvements to Topic 842, Leases and ASU No. 2018-11, Leases (Topic 842): Targeted Improvements. ASU No. 2018-10 provides improvements related to ASU No. 2016-02 to increase stakeholders’ awareness of the amendments and to expedite the improvements. The amendments affect narrow aspects of the guidance issued in ASU No. 2016-02. ASU No. 2018-11 allows entities adopting ASU No. 2016-02 to choose an additional (and optional) transition method, under which an entity initially applies the new leases standard at the adoption date and recognizes a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. ASU No. 2018-11 also allows lessors to not separate non-lease components from the associated lease component if certain conditions are met. Old National anticipates electing these practical expedients permitted by ASU 2018-11. The amendments in these updates become effective for annual periods and interim periods within those annual periods beginning after December 15, 2018. Old National has formed a cross functional team to plan and execute the adoption of this standard. The implementation efforts are ongoing, including the review of our leases and related accounting policies, review of contracts for embedded leases, and the implementation of a new lease software solution. Based on leases outstanding at September 30, 2018, Old National does not expect the new standard to have a material impact on the income statement, but anticipates a $125 million to $140 million increase in assets and liabilities. Decisions to repurchase, modify, or renew leases prior to the implementation date will impact this range. FASB ASC 326 – In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“CECL”). The main objective of this amendment is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The amendment requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to enhance their credit loss estimates. The amendment requires enhanced disclosures to help investors and other financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. The amendments in this update become effective for annual periods and interim periods within those annual periods beginning after December 15, 2019. Early adoption will be permitted beginning after December 15, 2018. As previously disclosed, Old National formed a cross functional committee to oversee the adoption of the ASU at the effective date. A working group was also formed and has developed a project plan focused on understanding the ASU, researching issues, identifying data needs for modeling inputs, technology requirements, modeling considerations, and ensuring overarching governance has been achieved for each objective and milestone. The project plan is targeting data and model validation completion in early 2019, with parallel processing of our existing allowance for loan losses model with the CECL for 2 – 4 quarters prior to implementation, depending on how model completion and validation occurs over the remainder of 2018. Currently, the working group has identified seven distinct loan portfolios for which a model has been or is in the process of being developed. For four of the loan portfolios, the data sets have been identified, populated, and internally validated. Additionally, models have been built, tested, and internally validated. During the remainder of 2018, Old National is focused on the completion of its remaining models, refining assumptions, and continued review and challenge of its models. Concurrent with this, Old National is also focused on researching and resolving interpretive accounting issues in the ASU, contemplating various related accounting policies, developing processes and related controls, and considering various reporting disclosures. As of the beginning of the first reporting period in which the new standard is effective, Old National expects to recognize a one-time cumulative effect adjustment increasing the allowance for loan losses, since the ASU covers credit losses over the expected life of a loan as well as considering future changes in macroeconomic conditions. The magnitude of any such one-time adjustment or the overall impact of the new guidance on the consolidated financial statements cannot yet be reasonably estimated. FASB ASC 350 – In January 2017, the FASB issued ASU No. 2017-04, Intangibles: Goodwill and Other: Simplifying the Test for Goodwill Impairment. To simplify the subsequent measurement of goodwill, the amendments eliminate Step 2 from the goodwill impairment test. The annual, or interim, goodwill impairment test is performed by comparing the fair value of a reporting unit with its carrying amount. An impairment charge should be recognized for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. In addition, the income tax effects of tax deductible goodwill on the carrying amount of the reporting unit should be considered when measuring the goodwill impairment loss, if applicable. The amendments also eliminate the requirements for any reporting unit with a zero or negative carrying amount to perform Step 2 of the goodwill impairment test. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the qualitative impairment test is necessary. The amendments should be applied on a prospective basis. The nature of and reason for the change in accounting principle should be disclosed upon transition. The amendments in this update should be adopted for annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted on testing dates after January 1, 2017. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact. FASB ASC 310 – In March 2017, the FASB issued ASU No. 2017-08, Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities. This update amends the amortization period for certain purchased callable debt securities held at a premium. FASB is shortening the amortization period for the premium to the earliest call date. Under current GAAP, entities generally amortize the premium as an adjustment of yield over the contractual life of the instrument. Concerns were raised that current GAAP excludes certain callable debt securities from consideration of early repayment of principal even if the holder is certain that the call will be exercised. As a result, upon the exercise of a call on a callable debt security held at a premium, the unamortized premium is recorded as a loss in earnings. There is diversity in practice (1) in the amortization period for premiums of callable debt securities and (2) in how the potential for exercise of a call is factored into current impairment assessments. The amendments in this update become effective for annual periods and interim periods within those annual periods beginning after December 15, 2018. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact. FASB ASC 718 – In June 2018, the FASB issued ASU No. 2018-07, Compensation – Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting. The amendments in this update expand the scope of Topic 718, Compensation—Stock Compensation (which currently only includes share-based payments to employees) to include share-based payments issued to nonemployees for goods or services. Consequently, the accounting for share-based payments to nonemployees and employees will be substantially aligned. The ASU supersedes Subtopic 505-50, Equity—Equity-Based Payments to Non-Employees. The amendments in this update become effective for annual periods beginning after December 15, 2018, including interim periods within that fiscal year and will not have a material impact on the consolidated financial statements. FASB ASC 958 – In June 2018, the FASB issued ASU No. 2018-08, Not-for-Profit Entities (Topic 958): Clarifying the Scope and the Accounting Guidance for Contributions Received and Contributions Made. The amendments in this update clarify and improve the scope and accounting guidance around contributions of cash and other assets received and made by not-for-profit organizations and business enterprises. The ASU clarifies and improves current guidance about whether a transfer of assets, or the reduction, settlement, or cancellation of liabilities, is a contribution or an exchange transaction. It provides criteria for determining whether the resource provider is receiving commensurate value in return for the resources transferred which, depending on the outcome, determines whether the organization follows contribution guidance or exchange transaction guidance in the revenue recognition and other applicable standards. It also provides a more robust framework for determining whether a contribution is conditional or unconditional, and for distinguishing a donor-imposed condition from a donor-imposed restriction. This is important because such classification affects the timing of contribution revenue and expense recognition. The new ASU does not apply to transfers of assets from governments to businesses. The amendments in this update become effective for a public business entity for transactions in which the entity serves as a resource recipient to annual periods beginning after June 15, 2018, including interim periods within those annual periods. The amendments in this update become effective for a public business entity for a public business for transactions in which the entity serves as a resource provider to annual periods beginning after December 15, 2018, including interim periods within those annual periods. Early adoption is permitted. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements. In July 2018, the FASB issued an update (ASU No. 2018-09, Codification Improvements). The amendments in this update affect a wide variety of topics in the Codification and are intended to clarify the Codification or correct the unintended application of guidance that is not expected to have a significant effect on current accounting practice. The transition and effective date guidance is based on the facts and circumstances of each amendment. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact. FASB ASC 820 – In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement. The updated guidance improves the disclosure requirements on fair value measurements. The ASU removes certain disclosures required by Topic 820 related to transfers between Level 1 and Level 2 of the fair value hierarchy; the policy for timing of transfers between levels; the valuation processes for Level 3 fair value measurements; and for nonpublic entities, the changes in unrealized gains and losses for the period included in earnings for recurring Level 3 fair value measurements held at the end of the reporting period. The ASU modifies certain disclosures required by Topic 820 related to disclosure of transfers into and out of Level 3 of the fair value hierarchy and purchases and issues of Level 3 assets and liabilities for nonpublic entities; the requirement to disclose the timing of liquidation of an investee’s assets and the date when restrictions from redemption might lapse only if the investee has communicated the timing to the entity or announced the timing publicly for investments in certain entities that calculate net asset value; and clarification that the measurement uncertainty disclosure is to communicate information about the uncertainty in measurement as of the reporting date. The ASU adds certain disclosure requirements related to changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. For certain unobservable inputs, an entity may disclose other quantitative information in lieu of the weighted average if the entity determines that other quantitative information would be a more reasonable and rational method to reflect the distribution of unobservable inputs used to develop Level 3 fair value measurements. The amendments in this update become effective for fiscal years, and interim periods within those fiscal years beginning after December 15, 2019. Early adoption is permitted. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact. FASB ASC 715 – In August 2018, the FASB issued ASU No. 2018-14, Compensation – Retirement Benefits – Defined Benefit Plans – General (Subtopic 715-20): Disclosure Framework – Changes to the Disclosure Requirements for Defined Benefit Plans. The amendments in this update modify the disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The amendments in this update become effective for fiscal years ending after December 15, 2020 and will not have a material impact on the consolidated financial statements. FASB ASC 350 – In August 2018, the FASB issued ASU No. 2018-15, Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract. The amendments in this update align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The amendments in this update become effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption is permitted. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements.

Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2018

Revenue From Contract With Customer [Abstract]

The accompanying unaudited consolidated financial statements include the accounts of Old National Bancorp and its wholly-owned affiliates (hereinafter collectively referred to as “Old National”) and have been prepared in conformity with accounting principles generally accepted in the United States of America and prevailing practices within the banking industry. Such principles require management to make estimates and assumptions that affect the reported amounts of assets, liabilities, and the disclosures of contingent assets and liabilities at the date of the financial statements and amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. In the opinion of management, the consolidated financial statements contain all the normal and recurring adjustments necessary for a fair statement of the financial position of Old National as of September 30, 2018 and 2017, and December 31, 2017, and the results of its operations for the three and nine months ended September 30, 2018 and 2017. Interim results do not necessarily represent annual results. These financial statements should be read in conjunction with Old National’s Annual Report for the year ended December 31, 2017.

All significant intercompany transactions and balances have been eliminated. Certain prior year amounts have been reclassified to conform to the 2018 presentation. Such reclassifications had no effect on net income or shareholders’ equity and were insignificant amounts.

Revenue Recognition

In May 2014, the FASB issued an update (ASU No. 2014-09, Revenue from Contracts with Customers) creating FASB Topic 606, Revenue from Contracts with Customers. The guidance in this update affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards (for example, insurance contracts or lease contracts). The scope of this update explicitly excludes net interest income, as well as other revenues from transactions involving financial instruments, such as loans and securities. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance provides steps to follow to achieve the core principle. An entity should disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. The amendments in this update became effective for annual periods and interim periods within those annual periods beginning after December 15, 2017 and did not have a material impact on the consolidated financial statements. Old National finalized the in-depth assessment and identified the revenue line items within the scope of this new guidance. For Old National, the revenue streams that are affected by this update are presented within noninterest income.

In March 2016, the FASB issued ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net). The amendments relate to when another party, along with the entity, is involved in providing a good or service to a customer. Topic 606 requires an entity to determine whether the nature of its promise is to provide that good or service to the customer (that is, the entity is a principal) or to arrange for the good or service to be provided to the customer by the other party (that is, the entity is an agent). This determination is based upon whether the entity controls the good or the service before it is transferred to the customer. Topic 606 includes indicators to assist in this evaluation. The amendments in this update affect the guidance in ASU No. 2014-09 above. The effective date is the same as the effective date of ASU No. 2014-09.

In April 2016, the FASB issued ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing. The amendments clarify the following two aspects of Topic 606: identifying performance obligations, and the licensing implementation guidance. Before an entity can identify its performance obligations in a contract with a customer, the entity first identifies the promised goods or services in the contract. The amendments in this update are expected to reduce the cost and complexity of applying the guidance on identifying promised goods or services. To identify performance obligations in a contract, an entity evaluates whether promised goods and services are distinct. Topic 606 includes two criteria for assessing whether promises to transfer goods or services are distinct. One of those criteria is that the promises are separately identifiable. This update will improve the guidance on assessing that criterion. Topic 606 also includes

implementation guidance on determining whether as entity’s promise to grant a license provides a customer with either a right to use the entity’s intellectual property, which is satisfied at a point in time, or a right to access the entity’s intellectual property, which is satisfied over time. The amendments in this update are intended to improve the operability and understandability of the licensing implementation guidance. The amendments in this update affect the guidance in ASU No. 2014-09 above. The effective date is the same as the effective date of ASU No. 2014-09.

In May 2016, the FASB issued ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients. The amendments do not change the core revenue recognition principle in Topic 606. The amendments provide clarifying guidance in certain narrow areas and add some practical expedients.

In December 2016, the FASB issued ASU No. 2016-20, Revenue from Contracts with Customers (Topic 606): Technical Corrections and Improvements. The FASB decided to issue a separate update for technical corrections and improvements to Topic 606 and other Topics amended by ASU No. 2014-09 to increase awareness of the proposals and to expedite improvements to ASU No. 2014-09. The amendment affects narrow aspects of the guidance issued in ASU No. 2014-09.

On January 1, 2018, Old National adopted ASU 2014-09, Revenue from Contracts with Customers and all subsequent amendments to the ASU (collectively, “Topic 606”) utilizing the modified retrospective application. A significant majority of Old National’s revenues are not subject to the new guidance. Services within the scope of Topic 606 include wealth management fees, service charges on deposit accounts, debit card and ATM fees, and investment product fees. Old National enters into various contracts with customers to provide these traditional banking services on a routine basis. Old National’s performance obligations are generally service-related and provided on a daily, monthly, or quarterly basis. The performance obligations are generally satisfied as services are rendered and the fees are collected at such time, or shortly thereafter. It is not typical for contracts to require significant judgment to determine the transaction price. The implementation of this update did not have a material impact on the measurement, timing, or recognition of revenue. Accordingly, no cumulative effect adjustment to opening retained earnings was deemed necessary. Results for reporting periods beginning after adoption are presented under Topic 606. As allowed under the update, results for prior periods continue to be reported under the accounting standards in effect for those periods.

Recent Accounting Pronouncements

Accounting Guidance Adopted in 2018

FASB ASC 825 – In January 2016, the FASB issued an update (ASU No. 2016-01, Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities). The amendments in this update impact public business entities as follows: (1) require equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income; (2) simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment; and when a qualitative assessment indicates that impairment exists, an entity is required to measure the investment at fair value; (3) eliminate the requirement to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; (4) require entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (5) require an entity to present separately in other comprehensive income the portion of the total change in fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (6) require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements; and (7) clarify that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets. The amendments in this update became effective for annual periods and interim periods within those annual periods beginning after December 15, 2017 and did not have a material impact on the consolidated financial statements.

FASB ASC 740 – In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory. Current guidance prohibits the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset has been sold to an outside party. This prohibition on recognition is an exception to the principle of comprehensive recognition of current and deferred income taxes in generally accepted accounting principles. The exception has led to diversity in practice and is a source of complexity in financial reporting. FASB decided that an entity should recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Consequently, the amendments in this update eliminate the exception for an intra-entity transfer of an asset other than inventory. The amendments in this update do not include new disclosure requirements; however, existing disclosure requirements might be applicable when accounting for the current and deferred income taxes for an intra-entity transfer of an asset other than inventory. The amendments in this update became effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods. The amendments in this update were applied on a modified retrospective basis through a cumulative-effect reduction of $1.0 million directly to retained earnings as of the beginning of 2018.

FASB ASC 805 – In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business. The amendments in this update provide a more robust framework to use in determining when a set of assets and activities is a business. Because the current definition of a business is interpreted broadly and can be difficult to apply, stakeholders indicated that analyzing transactions is inefficient and costly and that the definition does not permit the use of reasonable judgment. The amendments provide more consistency in applying the guidance, reduce the costs of application, and make the definition of a business more operable. The amendments in this update became effective for annual periods and interim periods within those annual periods beginning after December 15, 2017. Old National has completed its evaluation of adopting the new guidance on the consolidated financial statements and there is no impact to record.

FASB ASC 610 – In February 2017, the FASB issued ASU No. 2017-05, Other Income – Gains and Losses from the Derecognition of Nonfinancial Assets (Topic 610): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets. Subtopic 610-20 was originally issued as part of ASU No. 2014-09 to provide guidance for recognizing gains and losses from the transfer of nonfinancial assets in contracts with noncustomers. This update was issued to help clarify uncertainties and complexities of ASU 2014-09. The amendments in this update define the term in substance nonfinancial asset, in part, as a financial asset promised to a counterparty in a contract if substantially all of its fair value of the assets (recognized and unrecognized) that are promised to the counterparty in the contract is concentrated in nonfinancial assets. If substantially all of the fair value of the assets that are promised to the counterparty in a contract is concentrated in nonfinancial assets, then all of the financial assets promised to the counterparty are in substance nonfinancial assets. The amendments in this update also clarify that nonfinancial assets within the scope of Subtopic 610-20 may include nonfinancial assets transferred within a legal entity to a counterparty. The amendments in this update require an entity to derecognize a distinct nonfinancial asset or distinct in substance nonfinancial asset in a partial sale transaction when it (1) does not have (or ceases to have) a controlling financial interest in the legal entity that holds the asset in accordance with Topic 810 and (2) transfers control of the asset in accordance with Topic 606. Once an entity transfers control of a distinct nonfinancial asset or distinct in substance nonfinancial asset, it is required to measure any noncontrolling interest it receives (or retains) at fair value. The amendments were effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period and did not have a material impact on the consolidated financial statements.

FASB ASC 715 – In March 2017, the FASB issued ASU No. 2017-07, Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The amendments in this update require that an employer disaggregate the service cost component from the other components of net benefit cost. The amendments also provide explicit guidance on how to present the service cost component and the other components of net benefit cost in the income statement and allow only the service cost component of net benefit cost to be eligible for capitalization. The amendments in this update improve the consistency, transparency, and usefulness of financial information to users that have communicated that the service cost component generally is analyzed differently from the other components of net benefit cost. The amendments in this update became effective for annual periods and interim periods within those annual periods beginning after December 15, 2017 and did not have a material impact on the consolidated financial statements.

FASB ASC 718 – In May 2017, the FASB issued ASU No. 2017-09, Compensation – Stock Compensation (Topic 718): Scope of Modification Accounting. The amendments in this update provide guidance about which changes to the terms and conditions of a share-based payment award require an entity to apply modification accounting. An entity should account for the effect of a modification unless all the following are met: (1) the fair value of the modified award is the same as the fair value of the original award immediately before the original award is modified – if the modification does not affect any of the inputs to the valuation technique that the entity uses to value the award, the entity is not required to estimate the value immediately before and after the modification; (2) the vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the original award is modified; (3) the classification of the modified award as an equity instrument or a liability instrument is the same as the classification of the original award immediately before the original award is modified. The amendments in this update became effective for annual periods and interim periods within those annual periods beginning after December 15, 2017 and did not have a material impact on the consolidated financial statements.

FASB ASC 815 – In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. The amendments in the update make certain targeted improvements to simplify the application of the hedge accounting guidance in GAAP. The amendments in this update better align an entity’s risk management activities and financial reporting for hedging relationships through

changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. To meet that objective, the amendments expand and refine hedge accounting for both nonfinancial and financial risk components and align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. This update addresses several limitations that GAAP placed on the risk components, how an entity can designate the hedged item in a fair value hedge of interest rate risk, and how an entity can measure changes in fair value of the hedged item attributable to interest rate risk. In addition to the amendments to the designation and measurement guidance for qualifying hedging relationships, the amendments in this update also align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements to increase the understandability of the results of an entity’s intended hedging strategies. The amendments in this update require an entity to present the earnings effect of the hedging instrument in the same income statement line item in which the earnings effect of the hedged item is reported. Prior to the issuance of this update, GAAP provided special hedge accounting only for the portion of the hedge deemed to be “highly effective” and required an entity to separately reflect the amount by which the hedging instrument did not offset the hedged item, which is referred to as the “ineffective” amount. However, the concept and reporting of hedge ineffectiveness were difficult for financial statement users to understand and, at times, for preparers to explain. The FASB decided on an approach that no longer separately measures and reports hedge ineffectiveness. This update also includes certain targeted improvements to ease the application of current guidance related to the assessment of hedge effectiveness. Prior to the issuance of this update, GAAP contained specific requirements for initial and ongoing quantitative hedge effectiveness testing and strict requirements for specialized effectiveness testing methods that allowed an entity to forgo quantitative hedge effectiveness assessments for qualifying relationships. The amendments in this update become effective for annual periods and interim periods within those annual periods beginning after December 15, 2018. Early adoption is permitted in any interim period. Management elected to early adopt this update effective January 1, 2018 using the modified retrospective method. The impact of the adoption resulted in a reduction to Old National’s opening retained earnings of $3.2 million. In addition, as permitted by the amendments in the update, Old National reclassified $447.0 million in state and political subdivision securities with unrealized holding gains of $26.1 million from the held-to-maturity portfolio to the available-for-sale portfolio.

FASB ASC 220 – In February 2018, the FASB issued ASU No. 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The amendments in this ASU help organizations address certain stranded income tax effects in AOCI resulting from the Tax Cuts and Jobs Act. The ASU provides financial statement preparers with an option to reclassify stranded tax effects within AOCI to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act (or portion thereof) is recorded. The amendments are effective for all organizations for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. Management has elected to early adopt this update effective January 1, 2018, which resulted in a reclassification that decreased beginning accumulated other comprehensive income and increased beginning retained earnings by $10.8 million.

FASB ASC 825 – In February 2018, the FASB issued an update (ASU No. 2018-03, Technical Corrections and Improvements to Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities). The amendments in this update clarified the guidance in ASU No. 2016-01 specifically for equity securities without a readily determinable fair value and financial liabilities for which the fair value option is elected. The amendments in this update became effective for annual periods beginning after December 15, 2017 and interim periods within those fiscal years beginning after June 15, 2018 and did not have a material impact on the consolidated financial statements.

Accounting Guidance Issued But Not Yet Adopted

FASB ASC 842 – In February 2016, the FASB issued its new lease accounting guidance in ASU No. 2016-02, Leases (Topic 842). Under the new guidance, lessees will be required to recognize the following for all leases, with the exception of short-term leases, at the commencement date: (1) a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and (2) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged.

In July 2018, the FASB issued ASU No. 2018-10, Codification Improvements to Topic 842, Leases and ASU No. 2018-11, Leases (Topic 842): Targeted Improvements. ASU No. 2018-10 provides improvements related to ASU No. 2016-02 to increase stakeholders’ awareness of the amendments and to expedite the improvements. The amendments affect narrow aspects of the guidance issued in ASU No. 2016-02. ASU No. 2018-11 allows entities adopting ASU No. 2016-02 to choose an additional (and optional) transition method, under which an entity initially applies the new leases standard at the adoption date and recognizes a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. ASU No. 2018-11 also allows lessors to not separate non-lease components from the associated lease component if certain conditions are met. Old National anticipates electing these practical expedients permitted by ASU 2018-11.

The amendments in these updates become effective for annual periods and interim periods within those annual periods beginning after December 15, 2018. Old National has formed a cross functional team to plan and execute the adoption of this standard. The implementation efforts are ongoing, including the review of our leases and related accounting policies, review of contracts for embedded leases, and the implementation of a new lease software solution. Based on leases outstanding at September 30, 2018, Old National does not expect the new standard to have a material impact on the income statement, but anticipates a $125 million to $140 million increase in assets and liabilities. Decisions to repurchase, modify, or renew leases prior to the implementation date will impact this range.

FASB ASC 326 – In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“CECL”). The main objective of this amendment is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The amendment requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to enhance their credit loss estimates. The amendment requires enhanced disclosures to help investors and other financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. The amendments in this update become effective for annual periods and interim periods within those annual periods beginning after December 15, 2019. Early adoption will be permitted beginning after December 15, 2018.

As previously disclosed, Old National formed a cross functional committee to oversee the adoption of the ASU at the effective date. A working group was also formed and has developed a project plan focused on understanding the ASU, researching issues, identifying data needs for modeling inputs, technology requirements, modeling considerations, and ensuring overarching governance has been achieved for each objective and milestone. The project plan is targeting data and model validation completion in early 2019, with parallel processing of our existing allowance for loan losses model with the CECL for 2 – 4 quarters prior to implementation, depending on how model completion and validation occurs over the remainder of 2018. Currently, the working group has identified seven distinct loan portfolios for which a model has been or is in the process of being developed. For four of the loan portfolios, the data sets have been identified, populated, and internally validated. Additionally, models have been built, tested, and internally validated. During the remainder of 2018, Old National is focused on the completion of its remaining models, refining assumptions, and continued review and challenge of its models. Concurrent with this, Old National is also focused on researching and resolving interpretive accounting issues in the ASU, contemplating various related accounting policies, developing processes and related controls, and considering various reporting disclosures.

As of the beginning of the first reporting period in which the new standard is effective, Old National expects to recognize a one-time cumulative effect adjustment increasing the allowance for loan losses, since the ASU covers credit losses over the expected life of a loan as well as considering future changes in macroeconomic conditions. The magnitude of any such one-time adjustment or the overall impact of the new guidance on the consolidated financial statements cannot yet be reasonably estimated.

FASB ASC 350 – In January 2017, the FASB issued ASU No. 2017-04, Intangibles: Goodwill and Other: Simplifying the Test for Goodwill Impairment. To simplify the subsequent measurement of goodwill, the amendments eliminate Step 2 from the goodwill impairment test. The annual, or interim, goodwill impairment test is performed by comparing the fair value of a reporting unit with its carrying amount. An impairment charge should

be recognized for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. In addition, the income tax effects of tax deductible goodwill on the carrying amount of the reporting unit should be considered when measuring the goodwill impairment loss, if applicable. The amendments also eliminate the requirements for any reporting unit with a zero or negative carrying amount to perform Step 2 of the goodwill impairment test. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the qualitative impairment test is necessary. The amendments should be applied on a prospective basis. The nature of and reason for the change in accounting principle should be disclosed upon transition. The amendments in this update should be adopted for annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted on testing dates after January 1, 2017. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact.

FASB ASC 310 – In March 2017, the FASB issued ASU No. 2017-08, Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities. This update amends the amortization period for certain purchased callable debt securities held at a premium. FASB is shortening the amortization period for the premium to the earliest call date. Under current GAAP, entities generally amortize the premium as an adjustment of yield over the contractual life of the instrument. Concerns were raised that current GAAP excludes certain callable debt securities from consideration of early repayment of principal even if the holder is certain that the call will be exercised. As a result, upon the exercise of a call on a callable debt security held at a premium, the unamortized premium is recorded as a loss in earnings. There is diversity in practice (1) in the amortization period for premiums of callable debt securities and (2) in how the potential for exercise of a call is factored into current impairment assessments. The amendments in this update become effective for annual periods and interim periods within those annual periods beginning after December 15, 2018. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact.

FASB ASC 718 – In June 2018, the FASB issued ASU No. 2018-07, Compensation – Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting. The amendments in this update expand the scope of Topic 718, Compensation—Stock Compensation (which currently only includes share-based payments to employees) to include share-based payments issued to nonemployees for goods or services. Consequently, the accounting for share-based payments to nonemployees and employees will be substantially aligned. The ASU supersedes Subtopic 505-50, Equity—Equity-Based Payments to Non-Employees. The amendments in this update become effective for annual periods beginning after December 15, 2018, including interim periods within that fiscal year and will not have a material impact on the consolidated financial statements.

FASB ASC 958 – In June 2018, the FASB issued ASU No. 2018-08, Not-for-Profit Entities (Topic 958): Clarifying the Scope and the Accounting Guidance for Contributions Received and Contributions Made. The amendments in this update clarify and improve the scope and accounting guidance around contributions of cash and other assets received and made by not-for-profit organizations and business enterprises. The ASU clarifies and improves current guidance about whether a transfer of assets, or the reduction, settlement, or cancellation of liabilities, is a contribution or an exchange transaction. It provides criteria for determining whether the resource provider is receiving commensurate value in return for the resources transferred which, depending on the outcome, determines whether the organization follows contribution guidance or exchange transaction guidance in the revenue recognition and other applicable standards. It also provides a more robust framework for determining whether a contribution is conditional or unconditional, and for distinguishing a donor-imposed condition from a donor-imposed restriction. This is important because such classification affects the timing of contribution revenue and expense recognition. The new ASU does not apply to transfers of assets from governments to businesses. The amendments in this update become effective for a public business entity for transactions in which the entity serves as a resource recipient to annual periods beginning after June 15, 2018, including interim periods within those annual periods. The amendments in this update become effective for a public business entity for a public business for transactions in which the entity serves as a resource provider to annual periods beginning after December 15, 2018, including interim periods within those annual periods. Early adoption is permitted. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements.

In July 2018, the FASB issued an update (ASU No. 2018-09, Codification Improvements). The amendments in this update affect a wide variety of topics in the Codification and are intended to clarify the Codification or correct the unintended application of guidance that is not expected to have a significant effect on current accounting practice. The transition and effective date guidance is based on the facts and circumstances of each amendment. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact.

FASB ASC 820 – In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement. The updated guidance improves the disclosure requirements on fair value measurements. The ASU removes certain disclosures required by Topic 820 related to transfers between Level 1 and Level 2 of the fair value hierarchy; the policy for timing of transfers between levels; the valuation processes for Level 3 fair value measurements; and for nonpublic entities, the changes in unrealized gains and losses for the period included in earnings for recurring Level 3 fair value measurements held at the end of the reporting period. The ASU modifies certain disclosures required by Topic 820 related to disclosure of transfers into and out of Level 3 of the fair value hierarchy and purchases and issues of Level 3 assets and liabilities for nonpublic entities; the requirement to disclose the timing of liquidation of an investee’s assets and the date when restrictions from redemption might lapse only if the investee has communicated the timing to the entity or announced the timing publicly for investments in certain entities that calculate net asset value; and clarification that the measurement uncertainty disclosure is to communicate information about the uncertainty in measurement as of the reporting date. The ASU adds certain disclosure requirements related to changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. For certain unobservable inputs, an entity may disclose other quantitative information in lieu of the weighted average if the entity determines that other quantitative information would be a more reasonable and rational method to reflect the distribution of unobservable inputs used to develop Level 3 fair value measurements. The amendments in this update become effective for fiscal years, and interim periods within those fiscal years beginning after December 15, 2019. Early adoption is permitted. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact.

FASB ASC 715 – In August 2018, the FASB issued ASU No. 2018-14, Compensation – Retirement Benefits – Defined Benefit Plans – General (Subtopic 715-20): Disclosure Framework – Changes to the Disclosure Requirements for Defined Benefit Plans. The amendments in this update modify the disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The amendments in this update become effective for fiscal years ending after December 15, 2020 and will not have a material impact on the consolidated financial statements.

FASB ASC 350 – In August 2018, the FASB issued ASU No. 2018-15, Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract. The amendments in this update align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The amendments in this update become effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption is permitted. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements.