Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2020

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

Recently Adopted Accounting Pronouncements


Standard/Description	Effective Date and Adoption Considerations	Effect on Financial Statements
ASU No. 2016-13, Financial Instruments - Measurement of Credit Losses on Financial Instruments, applies to all financial instruments carried at amortized cost including held-to-maturity debt securities and accounts receivable. It requires financial assets carried at amortized cost to be presented at the net amount expected to be collected and requires entities to record credit losses through an allowance for credit losses on available-for-sale debt securities.	We adopted on January 1, 2020 on a modified retrospective basis.	We evaluated this guidance to determine the impact on our consolidated financial statements. Based on our assessment, we concluded the impact of adoption of this guidance was not material. Further disclosures and details on our adoption are discussed below.
ASU 2017-04, Simplifying the Test for Goodwill Impairment, removes the second step of the goodwill impairment test, which requires a hypothetical purchase price allocation if the fair value of a reporting unit is less than its carrying value. Goodwill impairment will now be measured using the difference between the carrying value and the fair value of the reporting unit, and any loss recognized should not exceed the total amount of goodwill allocated to that reporting unit.	We adopted on January 1, 2020 on a prospective basis.	We evaluated this guidance to determine the impact on our consolidated financial statements. Based on our assessment, we concluded the impact of adoption of this guidance was not material. The fair values of our reporting units have been greater than their corresponding carrying values in recent years. Changes in future projections, market conditions, and other factors may cause a change in the excess of fair value of our reporting units over their corresponding carrying values.
ASU 2018-15, Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract, helps entities evaluate the accounting for fees paid by a customer in a cloud computing arrangement by providing guidance for determining when an arrangement includes a software license and is solely a hosted service. Customers will now apply the same criteria for capitalizing implementation costs as they would for a software license arrangement. The guidance also prescribes the balance sheet, income statement, and cash flow classification of the capitalized implementation costs and related amortization expense, and requires additional quantitative and qualitative disclosures.	We adopted on January 1, 2020 and apply the rules prospectively to eligible costs incurred on or after the effective date.	We evaluated this guidance to determine the impact on our consolidated financial statements. Based on our assessment, we concluded the impact of adoption of this guidance was not material.
ASU No. 2019-12, Simplifying the Accounting for Income Taxes, eliminates certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. It clarifies that single-member limited liability companies, and other similar disregarded entities that are not subject to income tax, are not required to recognize an allocation of consolidated income tax expense in their separate financial statements. Further, it simplifies the accounting for franchise taxes, enacted changes in tax laws or rates and transactions that result in a step-up in the tax basis of goodwill.	Effective for fiscal years beginning after December 15, 2020 with early adoption permitted. We elected early adoption and adopted on January 1, 2020.	We evaluated this guidance to determine the impact on our consolidated financial statements. Based on our assessment, we concluded the impact of adoption of this guidance was not material.

Schedule of Reconciliation of Allowance for Doubtful Accounts

A reconciliation of the beginning and ending amount of allowance for doubtful accounts is as follows for the nine months ended September 30, 2020 (in millions):


	Allowance for Doubtful Accounts
Beginning balance as of December 31, 2019	$	8
Impact of adoption of ASU 2016-13	13
Bad debt expense	11
Charge-offs	(7)
Ending balance as of September 30, 2020	$	25