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Property, Plant and Equipment | 3 Months Ended
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Mar. 31, 2020
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | 4. Property, Plant and Equipment Asset Impairments During the first quarter of 2020, the offshore drilling business climate experienced a significant adverse change, primarily as a result of the market impacts of the oil price war between Saudi Arabia and Russia and regulatory, market and commercial challenges arising as a result of the COVID-19 pandemic and efforts to mitigate the spread of the virus, both of which resulted in a dramatic decline in oil prices. As of March 31, 2020, five drilling rigs that had indicators of impairment were evaluated. Based on the assumptions and analysis at that time, it was determined that the carrying value of four of these rigs was impaired. The fair values of these rigs were estimated using an income approach, whereby the fair value of each rig was estimated based on a calculation of the rig’s future net cash flows. These calculations utilized significant unobservable inputs, including management’s assumptions related to estimated dayrate revenue, rig utilization, estimated capital expenditures, repair and regulatory survey costs, as well as estimated proceeds that may be received on ultimate disposition of each rig. These fair value estimates were representative of Level 3 fair value measurements due to the significant level of estimation involved and the lack of transparency as to the inputs used. An aggregate asset impairment charge of $774 million ($408 million after tax and noncontrolling interests) was recorded for the three months ended March 31, 2020 and is reported within Operating expenses and other on the Consolidated Condensed Statements of Operations. Diamond Offshore evaluates its property and equipment for impairment whenever changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If market fundamentals in the offshore oil and gas industry deteriorate further or a market recovery is further delayed, Diamond Offshore may be required to recognize additional impairment losses in future periods.

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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