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Basis of Presentation (Policies) | 6 Months Ended
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Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Recent Accounting Pronouncements - Adopted | Recent Accounting Pronouncements - Adopted Simplifying the Accounting for Income Taxes In December 2019, the Financial Accounting Standards Board (“FASB”) issued amended guidance to simplify the accounting for income taxes. The guidance is effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. Certain amendments are to be applied prospectively, while other amendments are to be applied retrospectively to all periods presented. We have adopted this standard effective January 1, 2021. The adoption of this new standard did not impact our consolidated financial statements. Disclosure Requirements for Defined Benefit Plans In August 2018, the FASB issued amended guidance to add, remove, and clarify disclosure requirements related to defined benefit pension and other postretirement plans. The amended guidance removes the requirements to disclose: amounts in accumulated other comprehensive income (loss) expected to be recognized as components of net periodic benefit cost over the next fiscal year; the amount and timing of plan assets expected to be returned to the entity; and the effects of a one-percentage point change in assumed health care cost trend r ates. The amended guidance requires disclosure of an explanation of the reasons for significant gains and losses related to changes in the benefit obligation for the period. This guidance is effective for fiscal years ending after December 15, 2020. Effective December 31, 2020, we adopted the amended guidance and applied the disclosure requirements on a retrospective basis to all periods presented. This amended guidance did not have a material effect on our disclosures. Measurement of Credit Losses on Financial Instruments In June 2016, the FASB issued amended guidance that changes the impairment model for most financial assets and certain other instruments. For trade receivables, contract assets and other receivables, held-to-maturity debt securities, loans and other instruments, entities are required to use a current expected credit loss (“CECL”) model that will immediately recognize an estimate of credit losses that are expected to occur over the life of the financial instruments that are in the scope of this update, including trade receivables. For available-for-sale debt securities with unrealized losses, entities will measure credit losses in a manner similar to current practice, except that the losses will be recognized as an allowance. The CECL model is based on relevant information about past events, including historical experience, current conditions and reasonable and supportable forecasts that affect collectability. On January 1, 2020, we adopted the new CECL standard and developed an expected impairment model based on our historical loss experience. We believe that our previous methodology to calculate credit losses is generally consistent with the new expected credit loss model and did not result in a material adjustment upon adoption. The allowance for doubtful accounts was $8.3 million and $10.9 million as of June 30, 2021 and December 31, 2020, respectively.

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