Background and Basis of Presentation	9 Months Ended
Sep. 30, 2018
Background and Basis of Presentation [Abstract]
Background and Basis of Presentation	NOTE 1 – BACKGROUND AND BASIS OF PRESENTATION Business Operations: MRC Global Inc. is a holding company headquartered in Houston, Texas. Our wholly owned subsidiaries are global distributors of pipe, valves, fittings (“PVF”) 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 and chemical processing and general industrials) 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. We obtain products from a broad range of suppliers. Basis of Presentation: We have prepared our unaudited condensed consolidated financial statements in accordance with Rule 10-01 of Regulation S-X for interim financial statements. These statements do not include all information and footnotes that generally accepted accounting principles require for complete annual financial statements. However, the information in these statements reflects all normal recurring adjustments which are, in our opinion, necessary for a fair presentation of the results for the interim periods. The results of operations for the three and nine months ended September 30, 2018 are not necessarily indicative of the results that will be realized for the fiscal year ending December 31, 2018. We have derived our condensed consolidated balance sheet as of December 31, 2017 from the audited consolidated financial statements for the year ended December 31, 2017. You should read these condensed consolidated financial statements in conjunction with the audited consolidated financial statements and notes thereto for the year ended December 31, 2017. The 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. Recent Accounting Pronouncements: In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-02, Leases, which will replace the existing guidance in ASC 840, 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. Therefore, we will adopt the standard in the first quarter of 2019 and intend to apply a package of practical expedients that allow us not to reassess lease classification for expired or existing leases, whether expired or existing contracts are or contain leases, or initial direct costs for expired or existing leases. We are in the process of evaluating the effect of the adoption of ASU 2016-02 on our consolidated financial statements. As we lease a significant number of our facilities, we believe the recognition of right-of-use assets and lease liabilities for our operating leases will result in material increases in assets and liabilities reflected on our consolidated balance sheets. We do not expect the adoption of ASU 2016-02 to have a material impact on our consolidated statements of operations and cash flows. We do not believe the adoption of the standard will impact compliance with debt covenants, as our credit facilities contain provisions that grandfather our current method of accounting for leases for debt compliance purposes. Adoption of New Accounting Standards: ASU 2014-09, Revenue - Revenue from Contracts with Customers. On January 1, 2018, we adopted ASU 2014-09 and all the related amendments, (collectively, “ASC 606”) using the modified retrospective method. Under this method, a cumulative effect of initially applying the new revenue standard requires an adjustment to the opening balance of retained earnings, and the comparative information continues to be reported under the accounting standards in effect for those periods prior to adoption. The cumulative effect of initially applying the new standard was not material to our consolidated financial statements. We do not expect the adoption of this guidance to have a material effect on our results of operations in future periods. ASU 2017-12, Accounting for Derivatives and Hedging Transactions (Topic 815) Targeted Improvements to Accounting for Hedging Activities. In March 2018, we early adopted ASU 2017-12. The new standard amends the hedge accounting model to better portray an organization’s risk management activities in the financial statements, as well as simplifies the applications of certain hedge accounting guidance. The implementation of ASU 2017-12 did not have a material impact on our consolidated financial statements.

NOTE 1 – BACKGROUND AND BASIS OF PRESENTATION

Business Operations: MRC Global Inc. is a holding company headquartered in Houston, Texas. Our wholly owned subsidiaries are global distributors of pipe, valves, fittings (“PVF”) 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 and chemical processing and general industrials) 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. We obtain products from a broad range of suppliers.

Basis of Presentation: We have prepared our unaudited condensed consolidated financial statements in accordance with Rule 10-01 of Regulation S-X for interim financial statements. These statements do not include all information and footnotes that generally accepted accounting principles require for complete annual financial statements. However, the information in these statements reflects all normal recurring adjustments which are, in our opinion, necessary for a fair presentation of the results for the interim periods. The results of operations for the three and nine months ended September 30, 2018 are not necessarily indicative of the results that will be realized for the fiscal year ending December 31, 2018. We have derived our condensed consolidated balance sheet as of December 31, 2017 from the audited consolidated financial statements for the year ended December 31, 2017. You should read these condensed consolidated financial statements in conjunction with the audited consolidated financial statements and notes thereto for the year ended December 31, 2017.

The 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.

Recent Accounting Pronouncements: In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-02, Leases, which will replace the existing guidance in ASC 840, 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. Therefore, we will adopt the standard in the first quarter of 2019 and intend to apply a package of practical expedients that allow us not to reassess lease classification for expired or existing leases, whether expired or existing contracts are or contain leases, or initial direct costs for expired or existing leases. We are in the process of evaluating the effect of the adoption of ASU 2016-02 on our consolidated financial statements. As we lease a significant number of our facilities, we believe the recognition of right-of-use assets and lease liabilities for our operating leases will result in material increases in assets and liabilities reflected on our consolidated balance sheets. We do not expect the adoption of ASU 2016-02 to have a material impact on our consolidated statements of operations and cash flows. We do not believe the adoption of the standard will impact compliance with debt covenants, as our credit facilities contain provisions that grandfather our current method of accounting for leases for debt compliance purposes.

Adoption of New Accounting Standards: ASU 2014-09, Revenue - Revenue from Contracts with Customers. On January 1, 2018, we adopted ASU 2014-09 and all the related amendments, (collectively, “ASC 606”) using the modified retrospective method. Under this method, a cumulative effect of initially applying the new revenue standard requires an adjustment to the opening balance of retained earnings, and the comparative information continues to be reported under the accounting standards in effect for those periods prior to adoption. The cumulative effect of initially applying the new standard was not material to our consolidated financial statements. We do not expect the adoption of this guidance to have a material effect on our results of operations in future periods.

ASU 2017-12, Accounting for Derivatives and Hedging Transactions (Topic 815) Targeted Improvements to Accounting for Hedging Activities. In March 2018, we early adopted ASU 2017-12. The new standard amends the hedge accounting model to better portray an organization’s risk management activities in the financial statements, as well as simplifies the applications of certain hedge accounting guidance. The implementation of ASU 2017-12 did not have a material impact on our consolidated financial statements.