Significant Accounting Policies | NOTE 1—SIGNIFICANT ACCOUNTING POLICIES Business Operations : MRC Global Inc. is a holding company headquartered in Houston, Texas. Our wholly owned subsidiaries are global distributors of pipe, valves, fittings and related products and services across each of the upstream (exploration, production and extraction of underground oil and gas), midstream (gathering and transmission of oil and gas, gas utilities, and the storage and distribution of oil and gas) and downstream (crude oil refining and petrochemical processing) sectors. We have branches in principal industrial, hydrocarbon producing and refining areas throughout the United States, Canada, Europe, Asia, Australasia, the Middle East and Caspian. Our products are obtained from a broad range of suppliers. Basis of Presentation : The accompanying consolidated financial statements include the accounts of MRC Global Inc. and its wholly owned and majority owned subsidiaries (collectively referred to as the Company” or by such terms as “we,” “our” or “us”). All material intercompany balances and transactions have been eliminated in consolidation. Use of Estimates : The preparation of financial statements in conformity with the accounting principles generally accepted in the United States of America requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reported period. We believe that our most significant estimates and assumptions are related to estimated losses on accounts receivable, the last-in, first-out (“LIFO”) inventory costing methodology, estimated realizable value on excess and obsolete inventories, goodwill, intangible assets, deferred taxes and self-insurance programs. Actual results could differ materially from those estimates. Cash Equivalents : We consider all highly liquid investments with maturities of three months or less at the date of purchase to be cash equivalents. Allowance for Doubtful Accounts : We evaluate the adequacy of the allowance for losses on receivables based upon periodic evaluation of accounts that may have a higher credit risk using information available about the customer and other relevant data. This formal analysis is inherently subjective and requires us to make significant estimates of factors affecting doubtful accounts including customer specific information, current economic conditions, volume, growth and composition of the account, and other factors such as financial statements, news reports and published credit ratings. The amount of the allowance for the remainder of the trade balance is not evaluated individually but is based upon historical loss experience. Because this process is subjective and based on estimates, ultimate losses may differ from those estimates. Receivable balances are written off when we determine that the balance is uncollectible. Subsequent recoveries, if any, are credited to the allowance when received. The provision for losses on receivables is included in selling, general and administrative expenses in the accompanying consolidated statements of operations. Inventories : Our inventories are valued at the lower of cost, principally LIFO, or market. We believe that the use of LIFO results in a better matching of costs and revenue. This practice excludes certain inventories, which are held outside of the United States, approximating $ 168 million and $ 164 million at December 31, 2017 and 2016 , respectively, which are valued at the lower of weighted-average cost or market. Our inventory is substantially comprised of finished goods. Reserves for excess and obsolete inventories are determined based on analyses comparing inventories on hand to sales activity over time. The reserve, which totaled $34 million at December 31, 2017 and 2016 , is the amount deemed necessary to reduce the cost of the inventory to its estimated realizable value. Debt Issuance Costs : We defer costs directly related to obtaining financing and amortize them over the term of the indebtedness on a straight-line basis. The use of the straight-line method does not produce results that are materially different from those which would result from the use of the effective interest method. These amounts are reflected in the consolidated statement of operations as a component of interest expense. Debt issuance costs associated with our Global ABL Facility are presented in other assets and totaled $3 million and $6 million at December 31, 2017 and 2016 , respectively. Debt issuance costs associated with ou r Term Loan are presented as a r eduction of the carrying amount of the debt liability and totaled $2 million and $3 million at December 31, 2017 and 2016, respectively. Fixed Assets : Land, buildings and equipment are stated on the basis of cost. For financial statement purposes, depreciation is computed over the estimated useful lives of such assets principally by the straight-line method; accelerated depreciation and cost recovery methods are used for income tax purposes. Leasehold improvements are amortized using the straight-line method over the shorter of the remaining lease term or the estimated useful life of the improvements. When assets are retired or otherwise disposed of, the cost and related accumulated depreciation are removed from the accounts and any gain or loss is reflected in income for the period. Maintenance and repairs are charged to expense as incurred. Certain systems development costs related to the purchase, development and installation of computer software are capitalized and amortized over the estimated useful life of the related asset. Costs incurred prior to the development stage, as well as maintenance, training costs, and general and administrative expenses are expensed as incurred. Goodwill and Other Intangible Assets : Goodwill represents the excess of cost over the fair value of net assets acquired. Goodwill and intangible assets with indefinite useful lives are tested for impairment annually, or more frequently if circumstances indicate that impairment may exist. We evaluate goodwill for impairment at f our reporting units (U.S. Eastern Region and Gulf Coast, U.S. Western Region, Canada and International). Within each reporting unit, we have elected to aggregate the component countries and regions into a single reporting unit based on their similar economic characteristics, products, customers, suppliers, methods of distribution and the manner in which we operate each reporting unit. We perform our annual tests for indications of goodwill impairment as of October 1 st of each year, updating on an interim basis should indications of impairment exist. The goodwill impairment test compares the carrying value of the reporting unit that has the goodwill with the estimated fair value of that reporting unit. If the carrying value is more than the estimated fair value, a second step is performed, whereby we calculate the implied fair value of goodwill by deducting the fair value of all tangible and intangible net assets of the reporting unit from the estimated fair value of the reporting unit. Impairment losses are recognized to the extent that recorded goodwill exceeds implied goodwill. Our impairment methodology uses discounted cash flow and multiples of cash earnings valuation techniques, acquisition control premium and valuation comparisons to similar businesses. Each of these methods involves Level 3 unobservable market inputs and require us to make certain assumptions and estimates regarding future operating results, the extent and timing of future cash flows, working capital, sales prices, profitability, discount rates and growth trends. While we believe that such assumptions and estimates are reasonable, the actual results may differ materially from the projected results. Intangible assets with indefinite useful lives are tested for impairment annually or more frequently if circumstances indicate that impairment may exist. This test compares the carrying value of the indefinite-lived intangible assets with their estimated fair value. If the carrying value is more than the estimated fair value, impairment losses are recognized in an amount equal to the excess of the carrying value over the estimated fair value. Our impairment methodology uses discounted cash flow and estimated royalty rate valuation techniques. Each of these methods involves Level 3 unobservable market inputs and requires us to make certain assumptions and estimates regarding future operating results, sales prices, discount rates and growth trends. While we believe that such assumptions and estimates are reasonable, the actual results may differ materially from the projected results. Other intangible assets primarily include trade names, customer bases and noncompetition agreements resulting from business acquisitions. Other intangible assets are recorded at fair value at the date of acquisition. Amortization is provided using the straight-line method over their estimated useful lives, ranging from two to twenty years. The carrying value of amortizable intangible assets is subject to an impairment test when events or circumstances indicate a possible impairment. When events or circumstances indicate a possible impairment, we assess recoverability from future operations using undiscounted cash flows derived from the lowest appropriate asset group. If the carrying value exceeds the undiscounted cash flows, an impairment charge would be recognized to the extent that the carrying value exceeds the fair value, which is determined based on a discounted cash flow analysis. While we believe that assumptions and estimates utilized in the impairment analysis are reasonable, the actual results may differ materially from the projected results. These impairments are determined prior to performing our goodwill impairment test. Derivatives and Hedging : From time to time, we utilize interest rate swaps to reduce our exposure to potential interest rate increases. Changes in the fair values of our derivative instruments are based upon independent market quotes. We utilize foreign exchange forward contracts (exchange contracts) and options to manage our foreign exchange rate risks resulting from purchase commitments and sales orders. Changes in the fair values of our exchange contracts are based upon independent market quotes. We do not designate our exchange contracts as hedging instruments; therefore, we record our exchange contracts on the consolidated balance sheets at fair value, with the gains and losses recognized in earnings in the period of change. Fair Value : We measure certain of our assets and liabilities at fair value on a recurring basis. Fair value is an exit pri ce, representing the amount that would be received to sell an asset or be paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that is determined based on assumptions that market participants would use in pricing an asset or a liability. A three-tier fair value hierarchy is established as a basis for considering such assumptions for inputs used in the valuation methodologies to measuring fair value: Level 1 : Quoted prices (unadjusted) in active markets for identical assets or liabilities that the entity has the ability to access at the measurement date. Level 2 : Significant observable inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, and other inputs that are observable or can be corroborated by observable market data. Level 3 : Significant unobservable inputs for the asset or liability. Unobservable inputs reflect our own assumptions about the assumptions that market participants would use in pricing an asset or liability (including all assumptions about risk). Certain assets and liabilities are measured at fair value on a nonrecurring basis. Our assets and liabilities measured at fair value on a nonrecurring basis include property, plant and equipment, goodwill and other intangible assets. We do not measure these assets at fair value on an ongoing basis; however, these assets are subject to fair value adjustments in certain circumstances, such as when there is evidence of impairment. Our impairment methodology for goodwill and other intangible assets uses both (i) a discounted cash flow analysis requiring certain assumptions and estimates to be made regarding the extent and timing of future cash flows, discount rates and growth trends and (ii) valuation based on our publicly traded common stock. As all of the assumptions employed to measure these assets and liabilities on a nonrecurring basis are based on management’s judgment using internal and external data, these fair value determinations are classified as Level 3. We have not elected to apply the fair value option to any of our eligible financial assets and liabilities. Insurance : We are self-insured for employee healthcare as well as physical damage to automobiles that we own, lease or rent, and product warranty and recall liabilities. In addition, we maintain a deductible/retention program as it relates to insurance for property, inventory, workers’ compensation, automobile liability, asbestos claims, general liability claims (including, among others, certain product liability claims for pr operty damage, death or injury) and cybersecurity claims. These programs have deductibles and self-insured retentions ranging from $0 million to $5 million and are secured by various letters of credit totaling $ 6 million. Our estimated liability and related expenses for claims are based in part upon estimates that insurance carriers, third-party administrators and actuaries provide. We believe that insurance reserves are sufficient to cover outstanding claims, including those incurred but not reported as of the estimation date. Further, we maintain commercially reasonable umbrella/excess policy coverage in excess of the primary limits. We do not have excess coverage for physical damage to automobiles that we own, lease or rent, and product warranty and recall liabilities. Our accrued liabilities related to deductibles/retentions under insurance programs (other than employee healthcare) were $ 8 million as of December 31, 2017 and 2016 . In the area of employee healthcare, we have a commercially reasonable excess stop loss protection on a per person per year basis. Reserves for self-insurance accrued liabilities for employee healthcare were $3 million as of December 31, 2017 and 2016 . Income Taxes : We use the liability method for determining our income taxes, under which current and deferred tax liabilities and assets are recorded in accordance with enacted tax laws and rates. Under this method, the amounts of deferred tax liabilities and assets at the end of each period are determined using the tax rate expected to be in effect when taxes are actually paid or recovered. Deferred tax assets and liabilities are recorded for differences between the financial reporting and tax bases of assets and liabilities using the tax rate expected to be in effect when the taxes will actually be paid or refunds received. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in earnings in the period that includes the enactment date. A valuation allowance to reduce deferred tax assets is established when it is more likely than not that some portion or all of the deferred tax assets will not be realized. In determining the need for valuation allowances and our ability to utilize our deferred tax assets, we consider and make judgments regarding all the available positive and negative evidence, including the timing of the reversal of deferred tax liabilities, estimated future taxable income, ongoing, prudent and feasible tax planning strategies and recent financial results of operations. The amount of the deferred tax assets considered realizable, however, could be adjusted in the future if objective negative evidence in the form of cumulative losses is no longer present in certain jurisdictions and additional weight may be given to subjective evidence such as our projections for growth. Our tax provision is based upon our expected taxable income and statutory rates in effect in each country in which we operate. We are subject to the jurisdiction of numerous domestic and foreign tax authorities, as well as to tax agreements and treaties among these governments. Determination of taxable income in any jurisdiction requires the interpretation of the related tax laws and regulations and the use of estimates and assumptions regarding significant future events such as the amount, timing and character of deductions, permissible revenue recognition methods under the tax law and the sources and character of income and tax credits. Changes in tax laws, regulations, agreements and treaties, foreign currency exchange restrictions or our level of operations or profitability in each taxing jurisdiction could have an impact on the amount of income taxes we provide during any given year. A tax benefit from an uncertain tax position may be recognized when it is more likely than not that the position will be sustained upon examination, including any related appeals or litigation processes, on the basis of the technical merits. We adjust these liabilities when our judgment changes as a result of the evaluation of new information not previously available. Because of the complexity of some of these uncertainties, the ultimate resolution may result in a payment that is materially different from our current estimate of the tax liabilities. These differences will be reflected as increases or decreases to income tax expense in the period in which the new information is available. We classify interest and penalties related to unrecognized tax positions as income taxes in our financial statements. W e currently have the intent and ability to indefinitely reinvest the cash held by our non-Canadian foreign subsidiaries and, pending further analysis of the impact of the Tax Cuts and Jobs Act of 2017, there are currently no plans for the repatriation of those amounts. As such, no deferred income taxes have been provided for differences between the financial reporting and income tax basis inherent in these foreign subsidiaries. In the first quarter of 2017, we adopted ASU 2016-09, Compensation - Stock Compensation , which simplified the accounting for taxes related to stock based compensation. Under the standard, excess tax benefits and certain tax deficiencies are no longer recorded in additional paid-in capital (“APIC”), and APIC pools are eliminated. Instead, all excess tax benefits and tax deficiencies are recorded as income tax expense or benefit in the income statement. In addition, excess tax benefits are presented as operating activities rather than financing activities in the statement of cash flows. For the year ended December 31, 2017, we recorded a tax benefit of $2 million related to the vesting of stock awards. The impacts of this standard are reflected in the consolidated financial statements on a prospective basis. Foreign Currency Translation and Transactions : The functional currency of our foreign operations is the applicable local currency. The cumulative effects of translating the balance sheet accounts from the functional currency into the U.S. dollar at current exchange rates are included in accumulated other comprehensive income. The balance sheet accounts (with the exception of stockholders’ equity) are translated using current exchange rates as of the balance sheet date. Stockholders’ equity is translated at historical exchange rates and revenue and expense accounts are translated using a weighted-average exchange rate during the year. Gains or losses resulting from foreign currency transactions are recognized in the consolidated statements of operations. Equity-Based Compensation : Our equity-based compensation consisted and consists of restricted stock, restricted unit awards, performance share unit awards and nonqualified stock options of our Company. The cost of employee services received in exchange for an award of an equity instrument is measured based on the grant-date fair value of the award. Our policy is to expense equity-based compensation using the fair-value of awards granted, modified or settled. Restricted units and restricted stock are credited to equity as they are expensed over their vesting periods based on the grant date value of the shares vested. The fair value of nonqualified stock options is measured on the grant date of the related equity instrument using the Black-Scholes option-pricing model. A Monte Carlo simulation is completed to estimate the fair value of performance share unit awards with a stock price performance component. We expense the fair value of all equity grants, including performance share unit awards, on a straight line basis over the vesting period. Revenue Recognition : Sales to our principal customers are made pursuant to agreements that normally provide for transfer of legal title and risk upon shipment. We recognize revenue as products are shipped, title has transferred to the customer and the customer assumes the risks and rewards of ownership, and collectability is reasonably assured. Freight charges billed to customers are reflected in revenue. Return allowances are estimated using historical experience. Amounts received in advance of shipment are deferred and recognized as revenue when the products are shipped and title is transferred. Sales taxes collected from customers and remitted to governmental authorities are accounted for on a net basis and therefore are excluded from net sales in the accompanying consolidated statements of operations. Cost of Sales : Cost of sales includes the cost of inventory sold and related items, such as vendor rebates, inventory allowances and reserves, and shipping and handling costs associated with inbound and outbound freight, as well as depreciation and amortization and amortization of intangible assets. Certain purchasing costs and warehousing activities (including receiving, inspection and stocking costs), as well as general warehousing expenses, are included in selling, general and administrative expenses and not in cost of sales. As such, our gross profit may not be comparable to others that may include these expenses as a component of cost of sales. Purchasing and warehousing costs approximated $ 29 million, $ 30 million, and $ 37 million for the years ended December 31, 2017, 2016 and 2015 . Earnings per Share : Basic earnings per share are computed based on the weighted-average number of common shares outstanding, excluding any dilutive effects of unexercised stock options, unvested restricted stock awards, unv ested restricted stock unit awards, unvested performance share unit awards , and shares of preferred stock . Diluted earnings per share are computed based on the weighted-average number of common shares outstanding including any dilutive effect o f unexercised stock options, unvested restricted stock awards, unvested restricted stock unit awards, unvested performance share unit awards, and shares of preferred stock . The dilutive effect of unexercised stock options and unvested restricted stock is calculated under the treasury stock method. Equity awards and shares of preferred stock are disregarded in the calculations of diluted earnings per share if they are determined to be anti-dilutive. Concentration of Credit Risk : Most of our business activity is with customers in the energy sector. In the normal course of business, we grant credit to these customers in the form of trade accounts receivable. These receivables could potentially subject us to concentrations of credit risk; however, we minimize this risk by closely monitoring extensions of trade credit. We generally do not require collateral on trade receivables. We have a broad customer base doing business in many regions of the world. During 2017 , 2016 and 2015 , we did not have sales to any one customer in excess of 10% of sales. At those respective year-ends, no individual customer balances exceeded 10% of accounts receivable. We have a broad supplier base, sourcing our products in most regions of the world. During 2017 , 2016 and 2015 , we did not have purchases from any one vendor in excess of 10% of our inventory purchases. At those respective year-ends no individual vendor balance exceeded 10% of accounts payable. We maintain the majority of our cash and cash equivalents with several financial institutions. These financial institutions are located in many different geographical regions with varying economic characteristics and risks. Deposits held with banks may exceed insurance limits. We believe the risk of loss associated with our cash equivalents to be remote. Segment Reporting : Our business is comprised of four operating segments: U.S. Eastern Region and Gulf Coast, U.S. Western Region, Canada and International. Our International segment consists of our operations outside of the U.S. and Canada. These segments represent our business of selling PVF to the energy sector across each of the upstream (exploration, production and extraction of underground oil and gas), midstream (gathering and transmission of oil and gas, gas utilities, and the storage and distribution of oil and gas) and downstream (crude oil refining, petrochemical and chemical processing and general industrials) markets. Our two U.S. operating segments have been aggregated into a single reportable segment based on their economic similarities. As a result, we report segment information for the U.S., Canada and International. Recently Issued Accounting Standards : In May 2014, the Financial Accounting Standards Board (“FASB”) issued a comprehensive new revenue recognition standard, which will supersede previous existing revenue recognition guidance. The Accounting Standards Update (“ASU”) also provides guidance on accounting for certain contract costs and requires new disclosures. During 2016, the FASB issued additional clarification guidance on the new revenue recognition standard, which also included certain scope improvements and practical expedients. The standard (including clarification guidance issued) is effective for fiscal periods beginning after December 15, 2017 and allows for either full retrospective or modified retrospective adoption. We have completed a formal review of contracts with nearly 100 of our largest customers, based on revenue, which represented approximately 76% of 2017 revenue. This review encompassed customers from a wide variety of end markets and geographies and involved inquiry of sales and operations personnel responsible for servicing these accounts in addition to review of the contracts. The balance of our revenue is derived from thousands of smaller customers with which we generally interact in a transactional relationship where goods are purchased from our branch locations. Based on our analysis to date, we do not expect the guidance to have a material impact on the timing of our revenue recognition; however, our disclosures will be expanded to address the qualitative and quantitative requirements of the new standard. We expect to finalize our analysis and related documentation and to adopt the standard in the first quarter of 2018 and have determined that we will utilize the modified retrospective transition method. We have enhanced our internal control processes to address both the implementation and ongoing application of the standard. No significant modifications of our systems have been required. In February 2016, the FASB issued ASU 2016-02, Leases , which will replace the existing guidance in ASC 870, Leases. This ASU requires a dual approach for lessee accounting under which a lessee would account for leases as finance leases or operating leases. Both finance leases and operating leases will result in the lessee recognizing a right-of-use asset and a corresponding lease liability. For finance leases, the lessee would recognize interest expense and amortization of the right-of-use asset, and for operating leases, the lessee would recognize a straight-line total lease expense. This guidance is effective for annual and interim reporting periods of public entities beginning after December 15, 2018. We are in the process of evaluating the effect of the adoption of ASU 2016-02 on our consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-04, Simplifying the Test for Goodwill Impairment . The amendments in ASU 2017-04 eliminate the current two-step approach used to test goodwill for impairment and require an entity to apply a one-step quantitative test and record the amount of goodwill impairment as the excess of a reporting unit's carrying amount over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. ASU 2017-04 is effective for fiscal years, including interim periods within, beginning after December 15, 2019 (upon the first goodwill impairment test performed during that fiscal year). Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. A reporting entity must apply the amendments in ASU 2017-04 using a prospective approach. We do not expect the adoption of ASU 2017-04 to have a material impact on our consolidated financial statements. In May 2017, the FASB issued ASU No. 2017-09, Compensation – Stock Compensation (Topic 718) Scope of Modification Accounting which clarifies modification accounting for share-based payment awards should not be applied if the fair value, vesting conditions, and the classification of the modified award as an equity instrument or as a liability instrument are the same before and immediately after the modification. This standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. Adoption will be applied prospectively to awards modified on or after the adoption date. We do not expect the adoption of ASU 2017-09 to have a material impact on our consolidated financial statements. In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815) Targeted Improvements to Accounting for Hedging Activities which amends the hedge accounting model to better portray an organization’s risk management activities in the financial statements. In addition, the ASU simplifies the application of certain hedge accounting guidance. This standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted. We do not expect the adoption of ASU 2017-12 to have a material impact on our consolidated financial statements . |