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Summary of Significant Accounting Policies | 3 Months Ended
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Mar. 31, 2020
Summary of Significant Accounting Policies [Abstract] |
Summary of Significant Accounting Policies | Note 2. Summary of Significant Accounting Policies Apart from those matters noted below, there have been no changes in our significant accounting policies since those reported under Note 2 of the 2019 Form 10-K. Cash, Cash Equivalents and Restricted Cash The following table provides a reconciliation of cash and cash equivalents, and restricted cash reported within the Unaudited Condensed Consolidated Balance Sheets that sum to the total of the amounts shown in the Unaudited Condensed Statements of Consolidated Cash Flows.
|  | March 31, 2020 |  |  | December 31, 2019 |
Cash and cash equivalents |  | $ | 2,025.7 |  |  | $ | 334.7 |
Restricted cash |  |  | 89.9 |  |  |  | 75.3 |
Total cash, cash equivalents and restricted cash shown in the Unaudited Condensed Statements of Consolidated Cash Flows |  | $ | 2,115.6 |  |  | $ | 410.0 |
Restricted cash primarily represents amounts held in segregated bank accounts by our clearing brokers as margin in support of our commodity derivative instruments portfolio and related physical purchases and sales of natural gas, NGLs, crude oil, refined products and power. Additional cash may be restricted to maintain our commodity derivative instruments portfolio as prices fluctuate or margin requirements change. See Note 14 for information regarding our derivative instruments and hedging activities. Recent Accounting Developments Credit Losses In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The new guidance, referred to as the current expected credit loss (“CECL”) model, requires the measurement of expected credit losses for financial assets (e.g., accounts receivable) held at the reporting date based on historical experience, current economic conditions, and reasonable and supportable forecasts. These result in the more timely recognition of losses. The adoption of this new guidance on January 1, 2020 did not have a material impact on our consolidated financial statements. Fair Value Measurement In August 2018, the FASB issued ASU 2018-13, Fair Value Measurements (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement, which amended the disclosure requirements related to fair value measurements in an effort to enhance the overall usefulness of the disclosures and reduce costs by eliminating certain disclosures that were not considered to be decision-useful for users of the financial statements. The ASU will now require incremental disclosures regarding changes in unrealized gains and losses, significant unobservable inputs used to develop Level 3 fair value measurements and measurement uncertainty. Additionally, the ASU eliminated certain policy and process disclosures and reporting requirements. We adopted the requirements of this ASU on January 1, 2020. The amendments that resulted in additional disclosures have been applied prospectively for only the most recent interim or annual period presented in the year of adoption. All other amendments were applied retrospectively. See Note 14 for information regarding our fair value measurements. Goodwill In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. This ASU simplifies the accounting for goodwill impairment by removing Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. Goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. We adopted this guidance on January 1, 2020 for future goodwill impairment testing.

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- Definition The entire disclosure for all significant accounting policies of the reporting entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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