Description of Business, Basis of Presentation, and Changes in Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Our accounting and reporting policies conform to U.S. GAAP. Additionally, where applicable, the policies conform to the accounting and reporting guidelines prescribed by bank regulatory authorities. Certain reclassifications may have been made to the prior periods’ financial statements and notes to conform to the current period’s presentation, which did not have a material impact on our Condensed Consolidated Financial Statements. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and that affect income and expenses during the reporting period and related disclosures. In developing the estimates and assumptions, management uses all available evidence; however, actual results could differ because of uncertainties associated with estimating the amounts, timing, and likelihood of possible outcomes. Our most significant estimates pertain to the allowance for loan losses, valuations of automotive lease assets and residuals, fair value of financial instruments, and the determination of the provision for income taxes.
Finance Receivables and Loans	Finance Receivables and Loans On January 1, 2023, we implemented ASU 2022-02, Financial Instruments—Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures. This guidance eliminates the concept of TDRs and adds new disclosure requirements related to loan modifications to borrowers experiencing financial difficulty and gross charge-offs. We implemented the ASU on a prospective basis, which results in certain aspects of our accounting policies changing for the current year. For significant accounting policy information related to the accounting and reporting of TDRs, for which comparative period information is presented, refer to Note 1 to the Consolidated Financial Statements in our 2022 Annual Report on Form 10-K. Modifications of Loans with Borrowers Experiencing Financial Difficulty We may provide a modification to a borrower who is experiencing financial difficulty if we believe they have the ability and are willing to repay their loan. The type of modification granted will vary depending on our credit risk management practices, as well as the borrower’s financial condition and the characteristics of the loan, including the unpaid balance, the underlying collateral, and the number or types of previous modifications granted. Modifications that we make subject to these requirements include payment extensions, principal forgiveness, and/or interest rate concessions. These modifications generally reduce the borrower’s periodic payment amount. The following is a description of each of these types of modifications. •Payment extensions — Payment extensions include both payment deferrals and contractual maturity extensions. Deferral arrangements allow borrowers to delay a scheduled loan payment to a later date. Deferred loan payments do not affect the original contractual terms of the loan and the contractual maturity date of the loan remains unchanged. Deferrals also include certain forbearance agreements. Within the commercial loan portfolio, deferrals primarily reflect a deferral of interest payments. Under a contractual maturity extension agreement, the last payment date is extended to a future date, contractually lengthening the remaining term of the original loan. •Principal forgiveness — Under principal forgiveness, the outstanding principal balance of a loan is reduced by a specified amount. Principal forgiveness may occur voluntarily as part of a negotiated agreement with a borrower, or involuntarily through a bankruptcy proceeding. Under these involuntary instances, the bankruptcy court in a Chapter 11 or 13 proceeding may order us to reduce the outstanding principal balance of the loan to a specified amount. •Interest rate concessions — Interest rate concessions adjust the contractual interest rate of the loan to a rate that is not consistent with a market rate for a customer with similar credit risk. •Combination — Combination includes loans that have undergone multiple of the above loan modification types. This primarily includes rewritten loans where we grant an interest rate concession and a contractual maturity extension. Significant judgment is required to determine if a borrower is experiencing financial difficulty. These considerations vary by portfolio class. In all cases, the cumulative impacts of all modifications made within the 12-month period before the current modification are considered at the time of the most recent modification. For consumer loans of all classes, various qualitative factors are used for assessing the financial difficulty of the borrower. These factors include, but are not limited to, the borrower’s default status on any of its debts, bankruptcy, and recent changes in financial circumstances (for instance, loss of employment). For commercial loans of all classes, similar qualitative factors are considered when assessing the financial difficulty of the borrower. In addition to the previously noted factors, consideration is also given to the borrower’s forecasted ability to service the debt in accordance with the contractual terms, possible regulatory actions, and other potential business disruptions (for example, the loss of a significant customer or other revenue stream). In our consumer automotive portfolio class of loans, we also provide extensions or deferrals of payments to borrowers whom we deem to be experiencing only temporary financial difficulty. In these cases, there are limits within our operational policies to minimize the number of times a loan can be extended, as well as limits to the length of each extension, including a cumulative cap over the life of the loan. If these limits are breached, the modification may require disclosure as noted in the following paragraph. Before offering an extension or deferral, we evaluate the capacity of the customer to make the scheduled payments after the deferral period. During the deferral period, we continue to accrue interest on the loan as part of the deferral agreement. We grant these extensions or deferrals when we expect to collect all amounts due including interest accrued at the original contract rate. We do not disclose modifications that result in only an insignificant payment delay. In order to assess whether a payment delay is insignificant, we consider the amount of the modified payments subject to delay in conjunction with the unpaid principal balance or the collateral value of the loan, whether or not the delay is significant with respect to the frequency of payments under the original contract, or the loan’s original expected duration. In the cases where payment extensions cumulatively extend beyond 90 days and are more than 10% of the original contractual term, or where the cumulative payment extension within the 12-month period immediately preceding the current modification is beyond 180 days, we deem the delay in payment to be more than insignificant. The financial impacts of modifications that meet the definition of a modification to borrowers experiencing financial difficulty are reported in the period in which they are identified. Additionally, if such a loan defaults within 12 months of the modification, we are required to disclose the instances of redefault. For the purpose of this disclosure, we have determined that a loan is considered to have redefaulted when the loan meets the requirements for evaluation under our charge-off policy, except for commercial loans where redefault is defined as 90 days past due. Nonaccrual Loans Generally, we recognize loans of all classes as past due when they are 30 days delinquent on making a contractually required payment, and loans are placed on nonaccrual status when principal or interest has been delinquent for at least 90 days, or when full collection is not expected. Interest income recognition is suspended when finance receivables and loans are placed on nonaccrual status. Additionally, amortization of premiums and discounts and deferred fees and costs ceases when finance receivables and loans are placed on nonaccrual status. Exceptions include commercial real estate loans that are placed on nonaccrual status when delinquent for 60 days or when full collection is not probable, if sooner. Additionally, a loan can be returned to accrual status when the loan has been brought fully current, the collection of contractual principal and interest is reasonably assured, and six consecutive months of repayment performance is achieved. In certain cases, if a borrower has been current up to the time of the modification and repayment of the debt subsequent to the modification is reasonably assured, we may choose to continue to accrue interest on the loan.
Income Taxes	Income Taxes In calculating the provision for interim income taxes, in accordance with ASC 740, Income Taxes, we apply an estimated annual effective tax rate to year-to-date ordinary income. At the end of each interim period, we estimate the effective tax rate expected to be applicable for the full fiscal year. This method differs from that described in Note 1 to the Consolidated Financial Statements in our 2022 Annual Report on Form 10-K, which describes our annual significant income tax accounting policy and related methodology.
Recently Adopted and Issued Accounting Standards	Recently Adopted Accounting Standards Troubled Debt Restructurings and Vintage Disclosures (ASU 2022-02) In March 2022, the FASB issued ASU 2022-02, Financial Instruments—Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures. The purpose of this guidance is twofold. First, the guidance eliminates TDR recognition and measurement guidance that has been deemed no longer necessary under CECL. The guidance also adds a requirement to incorporate current year gross charge-offs by origination year into the vintage tables. With respect to the TDR impacts, under CECL, credit losses for financial assets measured at amortized cost are determined based on the total current expected credit losses over the life of the financial asset or group of financial assets. Therefore, credit losses on financial assets that have been modified as TDRs would have largely been incorporated in the allowance upon initial recognition. Under ASU 2022-02, we will evaluate whether loan modifications previously characterized as TDRs represent a new loan or a continuation of an existing loan in accordance with ASC Topic 310, Receivables. The guidance also added new disclosures that require an entity to provide information related to loan modifications that are made to borrowers that are deemed to be in financial difficulty. We adopted the ASU on January 1, 2023, on a prospective basis. The impact of these amendments was not material. Recently Issued Accounting Standards Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions (ASU 2022-03) In June 2022, the FASB issued ASU 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions. The purpose of this guidance is to clarify that a contractual restriction on the ability to sell an equity security is not considered part of the unit of account of the equity security, and therefore should not be considered when measuring the equity security’s fair value. Additionally, an entity cannot separately recognize and measure a contractual-sale restriction. This guidance also adds specific disclosures related to equity securities that are subject to contractual-sale restrictions, including (1) the fair value of equity securities subject to contractual sale restrictions reflected in the balance sheet, (2) the nature and remaining duration of the restrictions, and (3) the circumstances that could cause a lapse in the restrictions. The amendments are effective on January 1, 2024, with early adoption permitted. The amendments must be applied using a prospective approach with any adjustments from the adoption of the amendments recognized in earnings and disclosed upon adoption. Management does not expect the impact of these amendments to be material. Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method (ASU 2023-02) In March 2023, the FASB issued ASU 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. The purpose of this guidance is to expand the use of the proportional amortization method to certain tax equity investments made primarily for the purpose of receiving income tax credits and other income tax benefits. In order to qualify for the proportional amortization method, the following five conditions must be met: (1) it is probable that the income tax credits allocable to the tax equity investor will be available, (2) the tax equity investor does not have the ability to exercise significant influence over the operating and financial policies of the underlying project, (3) substantially all of the projected benefits are from income tax credits and other income tax benefits, (4) the tax equity investor’s projected yield is based solely on the cash flows from the income tax credits and other income tax benefits is positive, and (5) the tax equity investor is a limited liability investor in the limited liability entity for both legal and tax purposes, and the tax equity investor’s liability is limited to its capital investment. Selecting the proportional amortization method will be an accounting policy election that must be applied on a tax-credit-program-by-tax-credit-program basis rather than at the entity level or to individual investments. Additionally, in order to apply the proportional amortization method to qualifying investments, an entity must use the flow-through method when accounting for the receipt of the investment tax credits. This guidance also adds disclosure requirements related to tax credit programs where the proportional amortization method has been elected. The amendments are effective on January 1, 2024, with early adoption permitted. The amendments must be applied using either a modified retrospective or retrospective approach with any adjustments from the adoption of the amendments recognized in retained earnings and disclosed upon adoption. Management is still assessing the total impact of electing these amendments for qualifying tax credit programs; however, if we elect to apply these amendments, we do not expect the impact to be material.
Fair Value Measurements	The following are descriptions of the valuation methodologies used to measure material assets and liabilities at fair value and details of the valuation models, key inputs to those models, and significant assumptions utilized. •Equity securities — We hold various marketable equity securities measured at fair value with changes in fair value recognized in net income. Measurements based on observable market prices are classified as Level 1. •Available-for-sale securities — We carry our available-for-sale securities at fair value based on external pricing sources. We classify our securities as Level 1 when fair value is determined using quoted prices available for the same instruments trading in active markets. We classify our securities as Level 2 when fair value is determined using prices for similar instruments trading in active markets. We perform pricing validation procedures for our available-for-sale securities. •Derivative instruments — We enter into a variety of derivative financial instruments as part of our risk-management strategies. Certain of these derivatives are exchange traded, such as equity options. To determine the fair value of these instruments, we utilize the quoted market prices for those particular derivative contracts; therefore, we classified these contracts as Level 1. We also execute OTC and centrally cleared derivative contracts, such as interest rate swaps, foreign-currency denominated forward contracts, caps, floors, and agency to-be-announced securities. We utilize third-party-developed valuation models that are widely accepted in the market to value these derivative contracts. The specific terms of the contract and market observable inputs (such as interest rate forward curves, interpolated volatility assumptions, or equity pricing) are used in the model. We classified these derivative contracts as Level 2 because all significant inputs into these models were market observable. We also enter into interest rate lock commitments and forward commitments that are executed as part of our mortgage business, certain of which meet the accounting definition of a derivative and therefore are recorded as derivatives on our Condensed Consolidated Balance Sheet. Interest rate lock commitments are valued using internal pricing models with unobservable inputs, so they are classified as Level 3. We purchase automotive finance receivables and loans from third parties as part of forward flow arrangements and, from time-to-time, execute opportunistic ad-hoc bulk purchases. As part of those agreements, we may withhold a portion of the purchase price from the counterparty and be required to pay the counterparty all or part of the amount withheld at agreed upon measurement dates and determinable amounts if actual credit performance of the acquired loans on the measurement date is better than or equal to what was estimated at the time of acquisition. Because these contracts meet the accounting definition of a derivative, we recognize a liability at fair value for these deferred purchase price payments. The fair value of these liabilities is determined using a discounted cash flow method. To estimate cash flows, we utilize various significant assumptions, including market observable inputs (for example, forward interest rates) and internally developed inputs (for example, prepayment speeds, delinquency levels, and expected credit losses). These liabilities are valued using internal loss models with unobservable inputs, and are classified as Level 3. We are required to consider all aspects of nonperformance risk, including our own credit standing, when measuring fair value of derivative assets and liabilities. We reduce credit risk on the majority of our derivatives by entering into legally enforceable agreements that enable the posting and receiving of collateral associated with the fair value of our derivative positions on an ongoing basis. In the event that we do not enter into legally enforceable agreements that enable the posting and receiving of collateral, we will consider our credit risk in the valuation of derivative liabilities through a DVA and the credit risk of our counterparties in the valuation of derivative assets through a CVA, if warranted. When measuring these valuation adjustments, we generally use credit default swap spreads.

Description of Business, Basis of Presentation, and Changes in Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Our accounting and reporting policies conform to U.S. GAAP. Additionally, where applicable, the policies conform to the accounting and reporting guidelines prescribed by bank regulatory authorities. Certain reclassifications may have been made to the prior periods’ financial statements and notes to conform to the current period’s presentation, which did not have a material impact on our Condensed Consolidated Financial Statements. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and that affect income and expenses during the reporting period and related disclosures. In developing the estimates and assumptions, management uses all available evidence; however, actual results could differ because of uncertainties associated with estimating the amounts, timing, and likelihood of possible outcomes. Our most significant estimates pertain to the allowance for loan losses, valuations of automotive lease assets and residuals, fair value of financial instruments, and the determination of the provision for income taxes.

Finance Receivables and Loans

On January 1, 2023, we implemented ASU 2022-02, Financial Instruments—Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures. This guidance eliminates the concept of TDRs and adds new disclosure requirements related to loan modifications to borrowers experiencing financial difficulty and gross charge-offs. We implemented the ASU on a prospective basis, which results in certain aspects of our accounting policies changing for the current year. For significant accounting policy information related to the accounting and reporting of TDRs, for which comparative period information is presented, refer to Note 1 to the Consolidated Financial Statements in our 2022 Annual Report on Form 10-K.

Modifications of Loans with Borrowers Experiencing Financial Difficulty

We may provide a modification to a borrower who is experiencing financial difficulty if we believe they have the ability and are willing to repay their loan. The type of modification granted will vary depending on our credit risk management practices, as well as the borrower’s financial condition and the characteristics of the loan, including the unpaid balance, the underlying collateral, and the number or types of previous modifications granted. Modifications that we make subject to these requirements include payment extensions, principal forgiveness, and/or interest rate concessions. These modifications generally reduce the borrower’s periodic payment amount. The following is a description of each of these types of modifications.

•Payment extensions — Payment extensions include both payment deferrals and contractual maturity extensions. Deferral arrangements allow borrowers to delay a scheduled loan payment to a later date. Deferred loan payments do not affect the original contractual terms of the loan and the contractual maturity date of the loan remains unchanged. Deferrals also include certain forbearance agreements. Within the commercial loan portfolio, deferrals primarily reflect a deferral of interest payments. Under a contractual maturity extension agreement, the last payment date is extended to a future date, contractually lengthening the remaining term of the original loan.

•Principal forgiveness — Under principal forgiveness, the outstanding principal balance of a loan is reduced by a specified amount. Principal forgiveness may occur voluntarily as part of a negotiated agreement with a borrower, or involuntarily through a bankruptcy proceeding. Under these involuntary instances, the bankruptcy court in a Chapter 11 or 13 proceeding may order us to reduce the outstanding principal balance of the loan to a specified amount.

•Interest rate concessions — Interest rate concessions adjust the contractual interest rate of the loan to a rate that is not consistent with a market rate for a customer with similar credit risk.

•Combination — Combination includes loans that have undergone multiple of the above loan modification types. This primarily includes rewritten loans where we grant an interest rate concession and a contractual maturity extension.

Significant judgment is required to determine if a borrower is experiencing financial difficulty. These considerations vary by portfolio class. In all cases, the cumulative impacts of all modifications made within the 12-month period before the current modification are considered at the time of the most recent modification.

For consumer loans of all classes, various qualitative factors are used for assessing the financial difficulty of the borrower. These factors include, but are not limited to, the borrower’s default status on any of its debts, bankruptcy, and recent changes in financial circumstances (for instance, loss of employment). For commercial loans of all classes, similar qualitative factors are considered when assessing the financial difficulty of the borrower. In addition to the previously noted factors, consideration is also given to the borrower’s forecasted ability to service the debt in accordance with the contractual terms, possible regulatory actions, and other potential business disruptions (for example, the loss of a significant customer or other revenue stream).

In our consumer automotive portfolio class of loans, we also provide extensions or deferrals of payments to borrowers whom we deem to be experiencing only temporary financial difficulty. In these cases, there are limits within our operational policies to minimize the number of times a loan can be extended, as well as limits to the length of each extension, including a cumulative cap over the life of the loan. If these limits are breached, the modification may require disclosure as noted in the following paragraph. Before offering an extension or deferral, we evaluate the capacity of the customer to make the scheduled payments after the deferral period. During the deferral period, we continue to accrue interest on the loan as part of the deferral agreement. We grant these extensions or deferrals when we expect to collect all amounts due including interest accrued at the original contract rate.

We do not disclose modifications that result in only an insignificant payment delay. In order to assess whether a payment delay is insignificant, we consider the amount of the modified payments subject to delay in conjunction with the unpaid principal balance or the collateral value of the loan, whether or not the delay is significant with respect to the frequency of payments under the original contract, or the loan’s original expected duration. In the cases where payment extensions cumulatively extend beyond 90 days and are more than 10% of the original contractual term, or where the cumulative payment extension within the 12-month period immediately preceding the current modification is beyond 180 days, we deem the delay in payment to be more than insignificant.

The financial impacts of modifications that meet the definition of a modification to borrowers experiencing financial difficulty are reported in the period in which they are identified. Additionally, if such a loan defaults within 12 months of the modification, we are required to disclose the instances of redefault. For the purpose of this disclosure, we have determined that a loan is considered to have redefaulted when the loan meets the requirements for evaluation under our charge-off policy, except for commercial loans where redefault is defined as 90 days past due.

Nonaccrual Loans

Generally, we recognize loans of all classes as past due when they are 30 days delinquent on making a contractually required payment, and loans are placed on nonaccrual status when principal or interest has been delinquent for at least 90 days, or when full collection is not expected. Interest income recognition is suspended when finance receivables and loans are placed on nonaccrual status. Additionally, amortization of premiums and discounts and deferred fees and costs ceases when finance receivables and loans are placed on nonaccrual status. Exceptions include commercial real estate loans that are placed on nonaccrual status when delinquent for 60 days or when full collection is not probable, if sooner. Additionally, a loan can be returned to accrual status when the loan has been brought fully current, the collection of contractual principal and interest is reasonably assured, and six consecutive months of repayment performance is achieved. In certain cases, if a borrower has been current up to the time of the modification and repayment of the debt subsequent to the modification is reasonably assured, we may choose to continue to accrue interest on the loan.

Income Taxes

In calculating the provision for interim income taxes, in accordance with ASC 740, Income Taxes, we apply an estimated annual effective tax rate to year-to-date ordinary income. At the end of each interim period, we estimate the effective tax rate expected to be applicable for the full fiscal year. This method differs from that described in Note 1 to the Consolidated Financial Statements in our 2022 Annual Report on Form 10-K, which describes our annual significant income tax accounting policy and related methodology.

Recently Adopted and Issued Accounting Standards

Recently Adopted Accounting Standards

Troubled Debt Restructurings and Vintage Disclosures (ASU 2022-02)

In March 2022, the FASB issued ASU 2022-02, Financial Instruments—Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures. The purpose of this guidance is twofold. First, the guidance eliminates TDR recognition and measurement guidance that has been deemed no longer necessary under CECL. The guidance also adds a requirement to incorporate current year gross charge-offs by origination year into the vintage tables. With respect to the TDR impacts, under CECL, credit losses for financial assets measured at amortized cost are determined based on the total current expected credit losses over the life of the financial asset or group of financial assets. Therefore, credit losses on financial assets that have been modified as TDRs would have largely been incorporated in the allowance upon initial recognition. Under ASU 2022-02, we will evaluate whether loan modifications previously characterized as TDRs represent a new loan or a continuation of an existing loan in accordance with ASC Topic 310, Receivables. The guidance also added new disclosures that require an entity to provide information related to loan modifications that are made to borrowers that are deemed to be in financial difficulty. We adopted the ASU on January 1, 2023, on a prospective basis. The impact of these amendments was not material.

Recently Issued Accounting Standards

Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions (ASU 2022-03)

In June 2022, the FASB issued ASU 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions. The purpose of this guidance is to clarify that a contractual restriction on the ability to sell an equity security is not considered part of the unit of account of the equity security, and therefore should not be considered when measuring the equity security’s fair value. Additionally, an entity cannot separately recognize and measure a contractual-sale restriction. This guidance also adds specific disclosures related to equity securities that are subject to contractual-sale restrictions, including (1) the fair value of equity securities subject to contractual sale restrictions reflected in the balance sheet, (2) the nature and remaining duration of the restrictions, and (3) the circumstances that could cause a lapse in the restrictions. The amendments are effective on January 1, 2024, with early adoption permitted. The amendments must be applied using a prospective approach with any adjustments from the adoption of the amendments recognized in earnings and disclosed upon adoption. Management does not expect the impact of these amendments to be material.

Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method (ASU 2023-02)

In March 2023, the FASB issued ASU 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. The purpose of this guidance is to expand the use of the proportional amortization method to certain tax equity investments made primarily for the purpose of receiving income tax credits and other income tax benefits. In order to qualify for the proportional amortization method, the following five conditions must be met: (1) it is probable that the income tax credits allocable to the tax equity investor will be available, (2) the tax equity investor does not have the ability to exercise significant influence over the operating and financial policies of the underlying project, (3) substantially all of the projected benefits are from income tax credits and other income tax benefits, (4) the tax equity investor’s projected yield is based solely on the cash flows from the income tax credits and other income tax benefits is positive, and (5) the tax equity investor is a limited liability investor in the limited liability entity for both legal and tax purposes, and the tax equity investor’s liability is limited to its capital investment. Selecting the proportional amortization method will be an accounting policy election that must be applied on a tax-credit-program-by-tax-credit-program basis rather than at the entity level or to individual investments. Additionally, in order to apply the proportional amortization method to qualifying investments, an entity must use the flow-through method when accounting for the receipt of the investment tax credits. This guidance also adds disclosure requirements related to tax credit programs where the proportional amortization method has been elected. The amendments are effective on January 1, 2024, with early adoption permitted. The amendments must be applied using either a modified retrospective or retrospective approach with any adjustments from the adoption of the amendments recognized in retained earnings and disclosed upon adoption. Management is still assessing the total impact of electing these amendments for qualifying tax credit programs; however, if we elect to apply these amendments, we do not expect the impact to be material.

Fair Value Measurements

The following are descriptions of the valuation methodologies used to measure material assets and liabilities at fair value and details of the valuation models, key inputs to those models, and significant assumptions utilized.

•Equity securities — We hold various marketable equity securities measured at fair value with changes in fair value recognized in net income. Measurements based on observable market prices are classified as Level 1.

•Available-for-sale securities — We carry our available-for-sale securities at fair value based on external pricing sources. We classify our securities as Level 1 when fair value is determined using quoted prices available for the same instruments trading in active markets. We classify our securities as Level 2 when fair value is determined using prices for similar instruments trading in active markets. We perform pricing validation procedures for our available-for-sale securities.

•Derivative instruments — We enter into a variety of derivative financial instruments as part of our risk-management strategies. Certain of these derivatives are exchange traded, such as equity options. To determine the fair value of these instruments, we utilize the quoted market prices for those particular derivative contracts; therefore, we classified these contracts as Level 1.

We also execute OTC and centrally cleared derivative contracts, such as interest rate swaps, foreign-currency denominated forward contracts, caps, floors, and agency to-be-announced securities. We utilize third-party-developed valuation models that are widely accepted in the market to value these derivative contracts. The specific terms of the contract and market observable inputs (such as interest rate forward curves, interpolated volatility assumptions, or equity pricing) are used in the model. We classified these derivative contracts as Level 2 because all significant inputs into these models were market observable.

We also enter into interest rate lock commitments and forward commitments that are executed as part of our mortgage business, certain of which meet the accounting definition of a derivative and therefore are recorded as derivatives on our Condensed Consolidated Balance Sheet. Interest rate lock commitments are valued using internal pricing models with unobservable inputs, so they are classified as Level 3.

We purchase automotive finance receivables and loans from third parties as part of forward flow arrangements and, from time-to-time, execute opportunistic ad-hoc bulk purchases. As part of those agreements, we may withhold a portion of the purchase price from the counterparty and be required to pay the counterparty all or part of the amount withheld at agreed upon measurement dates and determinable amounts if actual credit performance of the acquired loans on the measurement date is better than or equal to what was estimated at the time of acquisition. Because these contracts meet the accounting definition of a derivative, we recognize a liability at fair value for these deferred purchase price payments. The fair value of these liabilities is determined using a discounted cash flow method. To estimate cash flows, we utilize various significant assumptions, including market observable inputs (for example, forward interest rates) and internally developed inputs (for example, prepayment speeds, delinquency levels, and expected credit losses). These liabilities are valued using internal loss models with unobservable inputs, and are classified as Level 3.

We are required to consider all aspects of nonperformance risk, including our own credit standing, when measuring fair value of derivative assets and liabilities. We reduce credit risk on the majority of our derivatives by entering into legally enforceable agreements that enable the posting and receiving of collateral associated with the fair value of our derivative positions on an ongoing basis. In the event that we do not enter into legally enforceable agreements that enable the posting and receiving of collateral, we will consider our credit risk in the valuation of derivative liabilities through a DVA and the credit risk of our counterparties in the valuation of derivative assets through a CVA, if warranted. When measuring these valuation adjustments, we generally use credit default swap spreads.