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Newly Adopted Accounting Pronouncements (Notes) | 3 Months Ended
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Mar. 31, 2020
Accounting Changes and Error Corrections [Abstract] |
New Accounting Pronouncements and Changes in Accounting Principles [Text Block] | 2. Newly Adopted Accounting Pronouncements Financial Instruments On January 1, 2020, we adopted ASU No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments and all related amendments. This ASU improves financial reporting by requiring more timely recording of credit losses on loans and other financial instruments held by financial institutions and other organizations. Under the new guidance, the ASU requires an organization to measure all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable supportable forecasts. We evaluated the impact of this amended guidance on our consolidated financial statements and related disclosures and concluded that it is immaterial. We estimate an allowance for doubtful accounts using a loss rate method. We considered the following in determining the expected loss rate: (1) historical loss rate, (2) macroeconomic factors, and (3) creditworthiness of customers. The historical loss rate is calculated by taking the yearly write-off expense, net of collections, as a percentage of the annual average balance of trade receivables for each of the past three years. A reconciliation of the beginning and ending allowance for doubtful accounts is as follows:
|  | Allowance for Doubtful Accounts:
December 31, 2019 balance |  | $ | 3.6 |
Charged to costs and expenses |  | 0.3 |
Deductions(a) |  | (0.3 | )
March 31, 2020 balance |  | $ | 3.6 |
(a) Includes accounts determined to be uncollectible and charged against reserves.

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- References No definition available. + Details
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- Definition The entire disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -URI http://asc.fasb.org/topic&trid=2122394 + Details
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