Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Accounting Policies Recently Adopted and Pending Accounting Pronouncements

Accounting Pronouncements

The following table summarizes ASUs issued by the FASB that were adopted during the current year or not yet adopted as of March 31, 2018, that could have a material effect on the Company's financial statements:

Standard	Description	Required Date of Adoption	Effect on the Financial Statements or Other Significant Matters
Standards Adopted in 2018
ASU 2014-09, Revenue from Contracts with Customers (ASC Topic 606) and subsequent related ASUs	These ASUs comprise ASC Topic 606, Revenue from Contracts with Customers, which supersede the revenue recognition requirements in ASC Topic 605, Revenue Recognition, and most industry-specific guidance throughout the Industry Topics of the ASC. The core principle of these ASUs 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.	January 1, 2018	The Company adopted these ASUs on a modified retrospective basis beginning January 1, 2018. Upon adoption, the Company recognized an immaterial cumulative effect adjustment that resulted in a decrease to the beginning balance of retained earnings as of January 1, 2018. Furthermore, the Company prospectively changed the presentation of certain types of revenue and expenses, such as underwriting revenue within investment banking income which is shown on a gross basis, and certain cash promotions and card network expenses, which were reclassified from noninterest expense to service charges on deposit accounts, card fees, and other charges and fees. The net quantitative impact of these presentation changes decreased both revenue and expenses by $3 million for the three months ended March 31, 2018; however, these presentation changes did not have an impact on net income. Prior period balances have not been restated to reflect these presentation changes. See Note 2, “Revenue Recognition,” for disclosures relating to ASC Topic 606.

Standard	Description	Required Date of Adoption	Effect on the Financial Statements or Other Significant Matters
Standards Adopted in 2018 (continued)
ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities; and ASU 2018-03, Technical Corrections and Improvements to Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities	These ASUs amend ASC Topic 825, Financial Instruments-Overall, and address certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. The main provisions require most investments in equity securities to be measured at fair value through net income, unless they qualify for a measurement alternative, and require fair value changes arising from changes in instrument-specific credit risk for financial liabilities that are measured under the fair value option to be recognized in other comprehensive income. With the exception of disclosure requirements and the application of the measurement alternative for certain equity investments that was adopted prospectively, these ASUs must be adopted on a modified retrospective basis.	January 1, 2018 Early adoption was permitted for the provision related to changes in instrument-specific credit risk for financial liabilities under the FVO.	The Company early adopted the provision related to changes in instrument-specific credit risk beginning January 1, 2016, which resulted in an immaterial cumulative effect adjustment from retained earnings to AOCI. See Note 1, “Significant Accounting Policies,” to the Company's 2016 Annual Report on Form 10-K for additional information regarding the early adoption of this provision. Additionally, the Company adopted the remaining provisions of these ASUs beginning January 1, 2018, which resulted in an immaterial cumulative effect adjustment to the beginning balance of retained earnings. In connection with the adoption of these ASUs, an immaterial amount of equity securities previously classified as securities AFS were reclassified to other assets, as the AFS classification is no longer permitted for equity securities under these ASUs. Subsequent to adoption of these ASUs, an observable transaction occurred relating to an equity investment without a readily determinable fair value. As a result, the Company recognized a $23 million increase in Other assets on its Consolidated Balance Sheets and in Other noninterest income on its Consolidated Statements of Income. See Note 9, “Other Assets,” and Note 16, “Fair Value Election and Measurement,” for additional information. The remaining provisions and disclosure requirements of these ASUs did not have a material impact on the Company's Consolidated Financial Statements and related disclosures upon adoption.
ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments	The ASU amends ASC Topic 230, Statement of Cash Flows, to clarify the classification of certain cash receipts and payments within the Company's Consolidated Statements of Cash Flows. These items include: cash payments for debt prepayment or debt extinguishment costs; cash outflows for the settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned and bank-owned life insurance policies; distributions received from equity method investees; and beneficial interests acquired in securitization transactions. The ASU also clarifies that when no specific U.S. GAAP guidance exists and the source of the cash flows are not separately identifiable, the predominant source of cash flow should be used to determine the classification for the item. The ASU must be adopted on a retrospective basis.	January 1, 2018	The Company adopted this ASU on a retrospective basis effective January 1, 2018 and changed the presentation of certain cash payments and receipts within its Consolidated Statements of Cash Flows. Specifically, the Company changed the presentation of proceeds from the settlement of bank-owned life insurance policies from operating activities to investing activities. The Company also changed the presentation of cash payments related to premiums paid for bank-owned life insurance policies from operating activities to investing activities. Lastly, for contingent consideration payments made more than three months after a business combination, the Company changed the presentation for the portion of the cash payment up to the acquisition date fair value of the contingent consideration as a financing activity and any amount paid in excess of the acquisition date fair value as an operating activity. For both the three months ending March 31, 2018 and 2017, the amount of cash payments and receipts relating to these changes were immaterial to the Company’s Consolidated Statements of Cash Flows.
ASU 2017-09, Stock Compensation (Topic 718): Scope of Modification Accounting	This ASU amends ASC Topic 718, Stock Compensation, to provide guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting per ASC Topic 718, Stock Compensation. The amendments clarify that modification accounting only applies to an entity if the fair value, vesting conditions, or classification of the award changes as a result of changes in the terms or conditions of a share-based payment award. The ASU should be applied prospectively to awards modified on or after the adoption date.	January 1, 2018	The Company adopted this ASU on January 1, 2018 and upon adoption, the ASU did not have a material impact on the Company's Consolidated Financial Statements and related disclosures.

Standard	Description	Required Date of Adoption	Effect on the Financial Statements or Other Significant Matters
Standards Adopted in 2018 (continued)
ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities	The ASU amends ASC Topic 815, Derivatives and Hedging, to simplify the requirements for hedge accounting. Key amendments include: eliminating the requirement to separately measure and report hedge ineffectiveness, requiring changes in the value of the hedging instrument to be presented in the same income statement line as the earnings effect of the hedged item, and the ability to measure the hedged item based on the benchmark interest rate component of the total contractual coupon for fair value hedges. These changes expand the types of risk management strategies eligible for hedge accounting. The ASU also permits entities to qualitatively assert that a hedging relationship was and continues to be highly effective. New incremental disclosures are also required for reporting periods subsequent to the date of adoption. All transition requirements and elections should be applied to hedging relationships existing on the date of adoption using a modified retrospective approach.	January 1, 2019 Early adoption is permitted.	The Company early adopted this ASU beginning January 1, 2018 and modified its measurement methodology for certain hedged items designated under fair value hedge relationships. The Company elected to perform its subsequent assessments of hedge effectiveness using a qualitative, rather than a quantitative, approach. The adoption resulted in an immaterial cumulative effect adjustment to the opening balance of retained earnings and a basis adjustment to the related hedged items. For additional information on the Company’s derivative and hedging activities, see Note 15, “Derivative Financial Instruments.”
ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from AOCI	This ASU amends ASC Topic 220, Income Statement - Reporting Comprehensive Income, to allow for a reclassification from AOCI to Retained earnings for the tax effects stranded in AOCI as a result of the remeasurement of DTAs and DTLs for the change in the federal corporate tax rate pursuant to the 2017 Tax Act, which was recognized through the income tax provision in 2017. The Company may apply this ASU at the beginning of the period of adoption or retrospectively to all periods in which the 2017 Tax Act is enacted.	January 1, 2019 Early adoption is permitted.	The Company early adopted this ASU as of January 1, 2018. Upon adoption of this ASU, the Company elected to reclassify $182 million of stranded tax effects relating to securities AFS, derivative instruments, credit risk on long-term debt, and employee benefit plans from AOCI to retained earnings. This amount was offset by $28 million of stranded tax effects relating to equity securities previously classified as securities AFS, resulting in a net $154 million increase to retained earnings.
Standards Not Yet Adopted
ASU 2016-02, Leases	The ASU creates ASC Topic 842, Leases, which supersedes ASC Topic 840, Leases. ASC Topic 842 requires lessees to recognize right-of-use assets and associated liabilities that arise from leases, with the exception of short-term leases. The ASU does not make significant changes to lessor accounting; however, there were certain improvements made to align lessor accounting with the lessee accounting model and ASC Topic 606, Revenue from Contracts with Customers. There are several new qualitative and quantitative disclosures required. Upon transition, lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach.	January 1, 2019 Early adoption is permitted.	The Company has formed a cross-functional team to oversee the implementation of this ASU. The Company's implementation efforts are ongoing, including the review of its lease portfolios and related lease accounting policies, the review of its service contracts for embedded leases, and the deployment of a new lease software solution. The Company's adoption of this ASU, which is expected to occur on January 1, 2019, will result in an increase in right-of-use assets and associated lease liabilities, arising from operating leases in which the Company is the lessee, on its Consolidated Balance Sheets. The amount of the right-of-use assets and associated lease liabilities recorded upon adoption will be based primarily on the present value of unpaid future minimum lease payments, the amount of which will depend on the population of leases in effect at the date of adoption. At March 31, 2018, the Company’s estimate of right-of-use assets and lease liabilities that would be recorded on its Consolidated Balance Sheets upon adoption is in excess of $1 billion. Additionally, the Company is currently evaluating the estimated impact that this ASU may have on its Consolidated Statements of Income.

Standard	Description	Required Date of Adoption	Effect on the Financial Statements or Other Significant Matters
Standards Not Yet Adopted (continued)
ASU 2016-13, Measurement of Credit Losses on Financial Instruments	The ASU adds ASC Topic 326, Financial Instruments-Credit Losses, to replace the incurred loss impairment methodology with a current expected credit loss methodology for financial instruments measured at amortized cost and other commitments to extend credit. For this purpose, expected credit losses reflect losses over the remaining contractual life of an asset, considering the effect of voluntary prepayments and considering available information about the collectability of cash flows, including information about past events, current conditions, and reasonable and supportable forecasts. The resulting allowance for credit losses is deducted from the amortized cost basis of the financial assets to reflect the net amount expected to be collected on the financial assets. Additional quantitative and qualitative disclosures are required upon adoption. The change to the allowance for credit losses at the time of the adoption will be made with a cumulative effect adjustment to Retained earnings. The current expected credit loss model does not apply to AFS debt securities; however, the ASU requires entities to record an allowance when recognizing credit losses for AFS securities, rather than recording a direct write-down of the carrying amount.	January 1, 2020 Early adoption is permitted beginning January 1, 2019.	The Company has formed a cross-functional team to oversee the implementation of this ASU and has identified the changes necessary to its credit loss estimation methodologies in order to comply with the new accounting standard requirements. Substantial progress has been made to date on implementing these changes, including the development of models, updates to business processes and technology systems, and the documentation of accounting policy decisions. Additionally, the Company is evaluating the impact that this ASU will have on its Consolidated Financial Statements and related disclosures, and the Company currently anticipates that an increase to the allowance for credit losses will be recognized upon adoption to provide for the expected credit losses over the estimated life of the financial assets. However, since the magnitude of the anticipated increase in the allowance for credit losses will be impacted by economic conditions and trends in the Company’s portfolio at the time of adoption, the quantitative impact cannot yet be reasonably estimated.
ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment	The ASU amends ASC Topic 350, Intangibles - Goodwill and Other, to simplify the subsequent measurement of goodwill, by eliminating Step 2 from the goodwill impairment test. The amendments require an entity to perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. Entities should recognize an impairment charge for the amount by which a reporting unit's carrying amount exceeds its fair value, but the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The ASU must be applied on a prospective basis.	January 1, 2020 Early adoption is permitted.	Based on the Company's most recent annual goodwill impairment test performed as of October 1, 2017, there were no reporting units for which the carrying amount of the reporting unit exceeded its fair value; therefore, this ASU would not currently have an impact on the Company's Consolidated Financial Statements and related disclosures. However, if upon the adoption date, which is expected to occur on January 1, 2020, the carrying amount of a reporting unit exceeds its fair value, the Company would be required to recognize an impairment charge for the amount that the carrying value exceeds the fair value.