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Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2015	Apr. 24, 2015
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Entity Registrant Name	MRC GLOBAL INC.
Entity Central Index Key	0001439095
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Common Stock [Member]
Entity Common Stock, Shares Outstanding		102,142,881
Restricted Stock [Member]
Entity Common Stock, Shares Outstanding		703,142

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2015	Dec. 31, 2014
Current assets:
Cash	$ 49,280	$ 25,064
Accounts receivable, net	849,949	974,454
Inventories, net	1,175,614	1,186,946
Other current assets	38,868	35,698
Total current assets	2,113,711	2,222,162
Other assets	28,789	28,534
Property, plant and equipment, net	111,166	116,001
Intangible assets:
Goodwill, net	788,805	806,006
Other intangible assets, net	677,939	701,118
Total assets	3,720,410	3,873,821
Current liabilities:
Trade accounts payable	521,617	538,943
Accrued expenses and other current liabilities	140,549	167,825
Deferred income taxes	68,037	69,435
Current portion of long term debt	7,935	7,935
Total current liabilities	738,138	784,138
Long-term obligations:
Long-term debt, net	1,365,351	1,445,709
Deferred income taxes	219,194	223,705
Other liabilities	22,551	23,054
Commitments and contingencies
Stockholders' equity:
Common stock, $0.01 par value per share: 500,000 shares authorized, 102,143 and 102,095 issued and outstanding, respectively	1,022	1,022
Preferred stock, $0.01 par value per share; 100,000 shares authorized, no shares issued and outstanding
Additional paid-in capital	1,657,742	1,655,696
Retained deficit	(93,560)	(122,625)
Accumulated other comprehensive loss	(190,028)	(136,878)
Total stockholders' equity	1,375,176	1,397,215
Total liabilities and stockholders' equity	$ 3,720,410	$ 3,873,821

Condensed Consolidated Balance Sheets (Parenthetical) - shares	Mar. 31, 2015	Dec. 31, 2014
Condensed Consolidated Balance Sheets [Abstract]
Common stock, shares issued		0.01
Common stock, shares outstanding	102,143	102,095
Preferred stock, shares outstanding	0	0

Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Condensed Consolidated Statements of Income [Abstract]
Sales	$ 1,292,290	$ 1,305,679
Cost of sales	1,072,368	1,073,547
Gross profit	219,922	232,132
Selling, general and administrative expenses	159,448	171,389
Operating income	60,474	60,743
Other expense:
Interest expense	(14,596)	(15,148)
Change in fair value of derivative instruments	(743)	(3,563)
Other, net	(3,676)	(8,873)
Income before income taxes	42,202	36,722
Income tax expense	13,137	13,202
Net income	$ 29,065	$ 23,520
Basic earnings per common share	$ 0.28	$ 0.23
Diluted earnings per common share	$ 0.28	$ 0.23
Weighted-average common shares, basic	102,116	101,924
Weighted-average common shares, diluted	102,241	102,738

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Condensed Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 29,065	$ 23,520
Other comprehensive (loss) income - Foreign currency translation adjustments	(53,150)	2,328
Comprehensive (loss) income	$ (24,085)	$ 25,848

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Operating activities
Net income	$ 29,065	$ 23,520
Adjustments to reconcile net income to net cash (used in) provided by operations:
Depreciation and amortization	5,108	5,177
Amortization of intangibles	15,879	15,730
Equity-based compensation expense	2,456	1,808
Deferred income tax benefit	(8,040)	(6,809)
Amortization of debt issuance costs	1,148	1,352
(Decrease) increase in LIFO reserve	(237)	1,315
Change in fair value of derivative instruments	743	3,563
Provision for uncollectible accounts	1,153	244
Foreign currency losses (gains)	4,155	(1,636)
Other non-cash items	804	783
Changes in operating assets and liabilities:
Accounts receivable	103,160	(39,335)
Inventories	(8,612)	(46,141)
Income taxes payable	11,151	22,013
Other current assets	(4,277)	4,934
Accounts payable	(6,007)	(45,696)
Accrued expenses and other current liabilities	(32,025)	(15,140)
Net cash provided by (used in) operations	115,624	(74,318)
Investing activities
Purchases of property, plant and equipment	(4,410)	(1,957)
Proceeds from the disposition of property, plant and equipment	492	551
Acquisitions, net of cash acquired		(247,201)
Other investment and notes receivable transactions	(2,922)	(734)
Net cash used in investing activities	(6,840)	(249,341)
Financing activities
Payments on revolving credit facilities	(321,564)	(451,808)
Proceeds from revolving credit facilities	243,250	781,114
Payments on long term obligations	(1,984)	(1,984)
Debt issuance costs paid		(90)
Proceeds from exercise of stock options	84	329
Tax benefit on stock options		(9)
Other	(109)
Net cash (used in) provided by financing activities	(80,323)	327,552
Increase in cash	28,461	3,893
Effect of foreign exchange rate on cash	(4,245)	1,059
Cash -- beginning of period	25,064	25,188
Cash -- end of period	49,280	30,140
Supplemental disclosures of cash flow information:
Cash paid for interest	13,543	13,509
Cash paid (received) for income taxes	$ 10,342	$ (2,044)

Background and Basis of Presentation	3 Months Ended
Background and Basis of Presentation	Mar. 31, 2015
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, petrochemical 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 Kazakhstan. Our products are obtained 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 months ended March 31, 2015 are not necessarily indicative of the results that will be realized for the fiscal year ending December 31, 2015. We have derived our condensed consolidated balance sheet as of December 31, 2014 from the audited consolidated financial statements for the year ended December 31, 2014. You should read these condensed consolidated financial statements in conjunction with the consolidated financial statements and notes thereto for the year ended December 31, 2014. 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 April 2015, the FASB issued ASU No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs. The amendments in this ASU require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. This guidance is effective for annual and interim reporting periods of public entities beginning after December 15, 2015. We expect to the adopt this guidance in 2016. As of March 31, 2015, our debt issuance costs totaled $16.8 million, which is reported in other assets.

Inventories

3 Months Ended

Mar. 31, 2015

Inventories [Abstract]

Inventories

NOTE 2 – INVENTORIES

The composition of our inventory is as follows (in thousands):


	March 31,	December 31,
	2015	2014
Finished goods inventory at average cost:
Energy carbon steel tubular products	$ 528,684	$ 497,146
Valves, fittings, flanges and all other products	813,606	857,063
	1,342,290	1,354,209
Less: Excess of average cost over LIFO cost (LIFO reserve)	(142,425)	(142,662)
Less: Other inventory reserves	(24,251)	(24,601)
	$ 1,175,614	$ 1,186,946

Our inventory quantities are expected to be reduced for the year, resulting in a liquidation of a last-in, first out (“LIFO”) inventory layer that was carried at a lower cost prevailing from a prior year, as compared with current costs in the current year (a “LIFO decrement”). A LIFO decrement results in the erosion of layers created in earlier years, and, therefore, a LIFO layer is not created for years that have decrements. For the three months ended March 31, 2015, the effect of this LIFO decrement decreased cost of sales by approximately $0.3 million. There was no LIFO decrement in 2014.

Long-Term Debt

3 Months Ended

Mar. 31, 2015

Long-Term Debt [Abstract]

Long-Term Debt

NOTE 3 – LONG-TERM DEBT

The components of our long-term debt are as follows (in thousands):


	March 31,	December 31,
	2015	2014
Senior Secured Term Loan B, net of discount of $3,502 and $3,693	$ 778,095	$ 779,888
Global ABL Facility	595,171	673,716
Other	20	40
	1,373,286	1,453,644
Less: Current portion	7,935	7,935
	$ 1,365,351	$ 1,445,709

Senior Secured Term Loan B: We have a $793.5 million seven-year Senior Secured Term Loan B (the “Term Loan”) the principal amount of which amortizes in equal quarterly installments of 1% per year with the balance payable in November 2019 when the facility matures. Subject to securing additional lender commitments, the Term Loan allows for incremental increases in facility size above $793.5 million up to an aggregate of $200 million, plus an additional amount such that the Company’s senior secured leverage ratio (as defined under the Term Loan) would not exceed 3.50 to 1.00. McJunkin Red Man Corporation is the borrower under this facility, which is guaranteed by MRC Global Inc. as well as all of its wholly owned U.S. subsidiaries. In addition, it is secured by a second lien on the assets securing our Global ABL Facility (which includes accounts receivable, inventory and related assets) and a first lien on substantially all of the other assets of MRC Global Inc. and those of its U.S. subsidiaries, as well as a pledge of all of the capital stock of our domestic subsidiaries and 65% of the capital stock of first tier, non-U.S. subsidiaries. We are required to repay the Term Loan with certain asset sales and insurance proceeds, certain debt proceeds and 50% of excess cash flow (reducing to 25% if our senior secured leverage ratio is no more than 2.75 to 1.00 and 0% if our senior secured leverage ratio is no more than 2.50 to 1.00). In addition, the Term Loan contains a number of customary restrictive covenants.

The interest rate for the Term Loan, including the amortization of original issue discount, was 5.10% as of March 31, 2015 and 5.10% at December 31, 2014.

Global ABL Facility: We have a $1.05 billion multi-currency global asset-based revolving credit facility (the “Global ABL Facility”) that matures in July 2019. This facility is comprised of $977 million in revolver commitments in the United States, $30 million in Norway, $20 million in Canada, $5 million in the United Kingdom, $10 million in Australia, $4 million in the Netherlands and $4 million in Belgium. It contains an accordion feature that allows us to increase the principal amount of the facility by up to $300 million, subject to securing additional lender commitments.

MRC Global Inc. and each of its current and future wholly owned material U.S. subsidiaries guarantee the obligations of our borrower subsidiaries under the Global ABL Facility. Additionally, each of our non-U.S. borrower subsidiaries guarantees the obligations of our other non-U.S. borrower subsidiaries under the Global ABL Facility. Outstanding obligations are generally secured by a first priority security interest in accounts receivable, inventory and related assets.

The interest rate for the Global ABL Facility was 1.74% and 1.84% as of March 31, 2015 and December 31, 2014, respectively. Excess Availability, as defined under our Global ABL Facility, was $386.3 million as of March 31, 2015.

Stockholders' Equity

3 Months Ended

Mar. 31, 2015

Stockholders' Equity [Abstract]

Stockholders' Equity

NOTE 4 – STOCKHOLDERS’ EQUITY

Stock Options and Restricted Stock

Our 2011 Omnibus Incentive Plan originally had 3,250,000 shares reserved for issuance under the plan. In April 2015, our shareholders approved an additional 4,250,000 shares for reservation for issuance under the plan. The plan permits the issuance of stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares, performance units and other stock-based and cash-based awards. Since the adoption of the 2011 Omnibus Incentive Plan, the Company’s Board of Directors has periodically granted stock options, restricted stock awards, restricted stock units and performance-based stock units to directors and employees. Options and stock appreciation rights may not be granted at prices less than the fair market value of our common stock on the date of the grant, nor for a term exceeding ten years. For employees, vesting generally occurs ratably over a three to five year period on the anniversaries of the date specified in the employees’ respective stock option, restricted stock award, restricted stock unit and performance award agreements, subject to accelerated vesting under certain circumstances set forth in the agreements. Vesting for directors generally occurs on the one-year anniversary of the grant date. In February 2015, 514,805 shares of restricted stock, 195,082 performance unit awards and 72,259 of restricted units were granted to employees. To date, before consideration of forfeitures, 3,301,436 shares have been granted to management, members of our Board of Directors and key employees under this plan. We expense the fair value of the stock option grants on a straight-line basis over the vesting period. A Black-Scholes option-pricing model is used to estimate the fair value of the stock options.

Accumulated Other Comprehensive Loss

Accumulated other comprehensive loss in the accompanying consolidated balance sheets consists of the following (in thousands):



	March 31,	December 31,
	2015	2014

Currency translation adjustments	$ (189,415)	$ (136,265)
Pension related adjustments	(613)	(613)
Accumulated other comprehensive loss	$ (190,028)	$ (136,878)

Earnings per Share

Earnings per share are calculated in the table below (in thousands, except per share amounts).



	Three Months Ended
	March 31,	March 31,
	2015	2014

Net income	$ 29,065	$ 23,520

Average basic shares outstanding	102,116	101,924
Effect of dilutive securities	125	814
Average diluted shares outstanding	102,241	102,738

Net income per share:
Basic	$ 0.28	$ 0.23
Diluted	$ 0.28	$ 0.23

Stock options and shares of restricted stock are disregarded in this calculation if they are determined to be anti-dilutive. For the three months ended March 31, 2015 and 2014, we had approximately 3.9 million and 1.1 million anti-dilutive stock options, respectively. There was no anti-dilutive restricted stock for the three months ended
March 31, 2015 and 2014.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

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+ Details

Segment Information

3 Months Ended

Mar. 31, 2015

Segment Information [Abstract]

Segment Information

NOTE 5 – SEGMENT INFORMATION

We operate as three business segments, U.S., 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 and related products and services to the energy and industrial sectors, 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 processing and general industrials) sectors.

The following table presents financial information for each segment (in millions):


	Three Months Ended
	March 31,	March 31,
	2015	2014
Sales
U.S.	$ 971.8	$ 948.0
Canada	119.4	166.2
International	201.1	191.5
Sales	$ 1,292.3	$ 1,305.7

Operating income
U.S.	$ 51.8	$ 54.1
Canada	5.4	7.2
International	3.3	(0.6)
Operating income	60.5	60.7

Interest expense	(14.6)	(15.1)
Other, net	(3.7)	(8.9)
Income before income taxes	$ 42.2	$ 36.7


	March 31,	December 31,
	2015	2014
Total assets
U.S.	$ 3,039.7	$ 3,111.9
Canada	166.5	204.1
International	514.2	557.8
Total assets	$ 3,720.4	$ 3,873.8

Our sales by product line are as follows (in thousands):


	Three Months Ended
	March 31,	March 31,
Type	2015	2014
Energy carbon steel tubular products:
Line pipe	$ 266,082	$ 207,238
Oil country tubular goods (OCTG)	105,663	130,219
	$ 371,745	$ 337,457


Valves, fittings, flanges and other products:
Valves and specialty products	$ 411,223	$ 429,223
Carbon steel fittings and flanges and stainless steel and alloy pipe and fittings	269,359	290,340
Other	239,963	248,659
	$ 920,545	$ 968,222

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

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Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599

+ Details

Fair Value Measurements	3 Months Ended
Fair Value Measurements	Mar. 31, 2015
Fair Value Measurements [Abstract]
Fair Value Measurements	NOTE 6 – FAIR VALUE MEASUREMENTS From time to time, we use derivative financial instruments to help manage our exposure to interest rate risk and fluctuations in foreign currencies. All of our derivative instruments are freestanding and, accordingly, changes in their fair market value are recorded in earnings. As of March 31, 2015, we do not have any interest rate swap agreements. Foreign exchange forward contracts and options are reported at fair value utilizing Level 2 inputs, as the fair value is based on broker quotes for the same or similar derivative instruments. The total notional amount of our forward foreign exchange contracts and options was approximately $52.3 million and $77.9 million at March 31, 2015 and December 31, 2014, respectively. We had approximatey $0.6 million and $1.6 million recorded as assets on our consolidated balance sheets as of March 31, 2015 and December 31, 2014, respectively. With the exception of long-term debt, the fair values of our financial instruments, including cash and cash equivalents, accounts receivable, trade accounts payable and accrued liabilities approximate carrying value. The carrying value of our debt was $1.373 billion and $1.454 billion at March 31, 2015 and December 31, 2014, respectively. We estimate the fair value of the Term Loan using Level 2 inputs, or quoted market prices. The fair value of our debt was $1.348 billion and $1.407 billion at March 31, 2015 and December 31, 2014, respectively.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Mar. 31, 2015
Commitments and Contingencies [Abstract]
Commitments and Contingencies	NOTE 7– COMMITMENTS AND CONTINGENCIES Litigation Asbestos Claims. We are one of many defendants in lawsuits that plaintiffs have brought seeking damages for personal injuries that exposure to asbestos allegedly caused. Plaintiffs and their family members have brought these lawsuits against a large volume of defendant entities as a result of the defendants’ manufacture, distribution, supply or other involvement with asbestos, asbestos containing-products or equipment or activities that allegedly caused plaintiffs to be exposed to asbestos. These plaintiffs typically assert exposure to asbestos as a consequence of third-party manufactured products that our McJunkin Red Man Corporation subsidiary purportedly distributed. As of March 31, 2015, we are named a defendant in approximately 421 lawsuits involving approximately 1,059 claims. No asbestos lawsuit has resulted in a judgment against us to date, with a majority being settled, dismissed or otherwise resolved. Applicable third-party insurance has substantially covered these claims, and insurance should continue to cover a substantial majority of existing and anticipated future claims. Accordingly, we have recorded a liability for our estimate of the most likely settlement of asserted claims and a related receivable from insurers for our estimated recovery, to the extent we believe that the amounts of recovery are probable. It is not possible to predict the outcome of these claims and proceedings. However, in our opinion, the likelihood that the ultimate disposition of any of these claims and legal proceedings will have a material adverse effect on our consolidated financial statements is remote. Other Legal Claims and Proceedings. From time to time, we have been subject to various claims and involved in legal proceedings incidental to the nature of our businesses. We maintain insurance coverage to reduce financial risk associated with certain of these claims and proceedings. It is not possible to predict the outcome of these claims and proceedings. However, in our opinion, the likelihood that the ultimate disposition of any of these claims and legal proceedings will have a material adverse effect on our consolidated financial statements is remote. Product Claims. From time to time, in the ordinary course of our business, our customers may claim that the products that we distribute are either defective or require repair or replacement under warranties that either we or the manufacturer may provide to the customer. These proceedings are, in the opinion of management, ordinary and routine matters incidental to our normal business. Our purchase orders with our suppliers generally require the manufacturer to indemnify us against any product liability claims, leaving the manufacturer ultimately responsible for these claims. In many cases, state, provincial or foreign law provides protection to distributors for these sorts of claims, shifting the responsibility to the manufacturer. In some cases, we could be required to repair or replace the products for the benefit of our customer and seek our recovery from the manufacturer for our expense. In our opinion, the likelihood that the ultimate disposition of any of these claims and legal proceedings will have a material adverse effect on our consolidated financial statements is remote. Weatherford Claim. In addition to PVF, our Canadian subsidiary, Midfield Supply (“Midfield”), now known as MRC Global ULC, also distributed progressive cavity pumps and related equipment (“PCPs”) under a distribution agreement with Weatherford Canada Partnership (“Weatherford”) within a certain geographical area located in southern Alberta, Canada. In late 2005 and early 2006, Midfield hired new employees, including former Weatherford employees, as part of Midfield’s desire to expand its PVF business into northern Alberta. Shortly thereafter, many of these employees left Midfield and formed a PCP manufacturing, distribution and service company named Europump Systems Inc. (“Europump”) in 2006. The distribution agreement with Weatherford expired in 2006. Midfield supplied Europump with PVF products that Europump distributed along with PCP pumps. In April 2007, Midfield purchased Europump’s distribution branches and began distributing and servicing Europump PCPs. Pursuant to a complaint that Weatherford filed on April 11, 2006 in the Court of Queen’s Bench of Alberta, Judicial Bench of Edmonton (Action No. 060304628), Weatherford sued Europump, three of Europump’s part suppliers, Midfield, certain current and former employees of Midfield, and other related entities, asserting a host of claims including breach of contract, breach of fiduciary duty, misappropriation of confidential information related to the PCPs, unlawful interference with economic relations and conspiracy. The Company denies these allegations and contends that Midfield’s expansion and subsequent growth was the result of fair competition. From 2006 through 2012, the case focused largely on Weatherford’s questioning of defense witnesses. In 2013, the defendants began substantive questioning of Weatherford and its witnesses. Discovery is ongoing and expected to last through late 2015. Due to ongoing discovery, and the limited information available related to any claimed damages, we cannot reasonably estimate potential loss at this time. The Company believes Weatherford’s claims are without merit and intends to defend them vigorously. SKF Claim. On February 19, 2013, in the United States District Court for the District of Delaware, SKF USA Inc. (a subsidiary of SKF AB, a Swedish company) sued McJunkin Red Man Corporation and MRC Global Inc. for trademark infringement unfair competition, unjust enrichment, federal cybersquatting, and related claims. SKF alleged that the Company, through its use of the red "MRC" block letters, was willfully infringing on SKF's use of a similar mark which SKF uses to market bearings. SKF claimed first use of this mark and requested an injunction to prohibit the Company from using “MRC.” The Company has used the MRC letters for years without any known or identifiable actual confusion and, therefore, the Company denied SKF’s allegations and further alleged there is no likelihood of confusion as to the source of the products and the distribution services provided by the Company. The Company asserted several affirmative defenses and also counter-claims for misrepresentation, unfair competition, and interference with business opportunities. After the parties completed the discovery phase, and before trial was scheduled to begin on March 9, 2015, the parties agreed to settlement terms and are working to execute a formal settlement agreement that will include a joint stipulation of dismissal. Under the settlement terms, the Company’s resolution of this lawsuit does not have a material adverse effect on our consolidated financial statements. Customer Contracts We have contracts and agreements with many of our customers that dictate certain terms of our sales arrangements (pricing, deliverables, etc.). While we make every effort to abide by the terms of these contracts, certain provisions are complex and often subject to varying interpretations. Under the terms of these contracts, our customers have the right to audit our adherence to the contract terms. Historically, any settlements that have resulted from these customer audits have not been material to our consolidated financial statements. Purchase Commitments We have purchase obligations consisting primarily of inventory purchases made in the normal course of business to meet operating needs. While our vendors often allow us to cancel these purchase orders without penalty, in certain cases, cancellations may subject us to cancellation fees or penalties depending on the terms of the contract.

Background and Basis of Presentation (Policy)	3 Months Ended
Background and Basis of Presentation (Policy)	Mar. 31, 2015
Background and Basis of Presentation [Abstract]
Business Operations	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, petrochemical 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 Kazakhstan. Our products are obtained from a broad range of suppliers.
Basis of Presentation	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 months ended March 31, 2015 are not necessarily indicative of the results that will be realized for the fiscal year ending December 31, 2015. We have derived our condensed consolidated balance sheet as of December 31, 2014 from the audited consolidated financial statements for the year ended December 31, 2014. You should read these condensed consolidated financial statements in conjunction with the consolidated financial statements and notes thereto for the year ended December 31, 2014. 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.
Recently Issued Accounting Standards	Recent Accounting Pronouncements: In April 2015, the FASB issued ASU No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs. The amendments in this ASU require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. This guidance is effective for annual and interim reporting periods of public entities beginning after December 15, 2015. We expect to the adopt this guidance in 2016. As of March 31, 2015, our debt issuance costs totaled $16.8 million, which is reported in other assets.

Inventories (Tables)

3 Months Ended

Mar. 31, 2015

Inventories [Abstract]

Composition of Inventory


	March 31,	December 31,
	2015	2014
Finished goods inventory at average cost:
Energy carbon steel tubular products	$ 528,684	$ 497,146
Valves, fittings, flanges and all other products	813,606	857,063
	1,342,290	1,354,209
Less: Excess of average cost over LIFO cost (LIFO reserve)	(142,425)	(142,662)
Less: Other inventory reserves	(24,251)	(24,601)
	$ 1,175,614	$ 1,186,946

Long-Term Debt (Tables)

3 Months Ended

Mar. 31, 2015

Long-Term Debt [Abstract]

Components of Long-Term Debt


	March 31,	December 31,
	2015	2014
Senior Secured Term Loan B, net of discount of $3,502 and $3,693	$ 778,095	$ 779,888
Global ABL Facility	595,171	673,716
Other	20	40
	1,373,286	1,453,644
Less: Current portion	7,935	7,935
	$ 1,365,351	$ 1,445,709

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

+ Details

Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2015

Stockholders' Equity [Abstract]

Accumulated Other Comprehensive Loss in Accompanying Consolidated Balance Sheets



	March 31,	December 31,
	2015	2014

Currency translation adjustments	$ (189,415)	$ (136,265)
Pension related adjustments	(613)	(613)
Accumulated other comprehensive loss	$ (190,028)	$ (136,878)

Earnings Per Share



	Three Months Ended
	March 31,	March 31,
	2015	2014

Net income	$ 29,065	$ 23,520

Average basic shares outstanding	102,116	101,924
Effect of dilutive securities	125	814
Average diluted shares outstanding	102,241	102,738

Net income per share:
Basic	$ 0.28	$ 0.23
Diluted	$ 0.28	$ 0.23

Segment Information (Tables)

3 Months Ended

Mar. 31, 2015

Segment Information [Abstract]

Schedule of Financial Information for Each Segment


	Three Months Ended
	March 31,	March 31,
	2015	2014
Sales
U.S.	$ 971.8	$ 948.0
Canada	119.4	166.2
International	201.1	191.5
Sales	$ 1,292.3	$ 1,305.7

Operating income
U.S.	$ 51.8	$ 54.1
Canada	5.4	7.2
International	3.3	(0.6)
Operating income	60.5	60.7

Interest expense	(14.6)	(15.1)
Other, net	(3.7)	(8.9)
Income before income taxes	$ 42.2	$ 36.7


	March 31,	December 31,
	2015	2014
Total assets
U.S.	$ 3,039.7	$ 3,111.9
Canada	166.5	204.1
International	514.2	557.8
Total assets	$ 3,720.4	$ 3,873.8

Schedule of Net Sales by Product Line


	Three Months Ended
	March 31,	March 31,
Type	2015	2014
Energy carbon steel tubular products:
Line pipe	$ 266,082	$ 207,238
Oil country tubular goods (OCTG)	105,663	130,219
	$ 371,745	$ 337,457


Valves, fittings, flanges and other products:
Valves and specialty products	$ 411,223	$ 429,223
Carbon steel fittings and flanges and stainless steel and alloy pipe and fittings	269,359	290,340
Other	239,963	248,659
	$ 920,545	$ 968,222

Background and Basis of Presentation (Details) $ in Millions	Mar. 31, 2015 USD ($)
Background and Basis of Presentation [Abstract]
Debt issuance costs	$ 16.8

Inventories (Details) - USD ($)	3 Months Ended	12 Months Ended
Inventories (Details) - USD ($)	Mar. 31, 2015	Dec. 31, 2014
Finished goods inventory at average cost:
Finished goods inventory at average cost	$ 1,342,290,000	$ 1,354,209,000
Less: Excess of average cost over LIFO cost (LIFO reserve)	(142,425,000)	(142,662,000)
Less: Other inventory reserves	(24,251,000)	(24,601,000)
Inventories, net	1,175,614,000	1,186,946,000
Effect of LIFO decrement on cost of sales	(300,000)	0
Energy carbon steel tubular products [Member]
Finished goods inventory at average cost:
Finished goods inventory at average cost	528,684,000	497,146,000
Valves, fittings, flanges and all other products [Member]
Finished goods inventory at average cost:
Finished goods inventory at average cost	$ 813,606,000	$ 857,063,000

Long-Term Debt (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Debt Instrument [Line Items]
Proceeds from revolving credit facilities	$ 243,250	$ 781,114
Revolving credit facility [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date	Jul. 31, 2019
Credit facility, maximum borrowing capacity	$ 1,050,000
Proceeds from revolving credit facilities	300,000
Revolving credit facility [Member] \| U.S. [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	977,000
Revolving credit facility [Member] \| Canada [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	20,000
Revolving credit facility [Member] \| United Kingdom [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	5,000
Revolving credit facility [Member] \| Australia [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	10,000
Revolving credit facility [Member] \| Netherlands [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	4,000
Revolving credit facility [Member] \| Belgium [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	4,000
Revolving credit facility [Member] \| Norway [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	$ 30,000
Global ABL Facility [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	1.74%		1.84%
Credit facility, remaining borrowing capacity	$ 386,300
Senior Secured Term Loan B [Member]
Debt Instrument [Line Items]
New Term Loan	$ 793,500
Debt maturity period	7 years
Term loan annual amortization percentage	1.00%
Debt instrument, maturity date	Nov. 30, 2019
Term Loan accordion feature	$ 200,000
Percentage of capital stock in foreign subsidiaries securing Term Loan B	65.00%
Debt instrument, interest rate	5.10%		5.10%
Senior Secured Term Loan B [Member] \| Senior Secured Leverage Ratio Is No More Than 2.75 to 1.00 [Member]
Debt Instrument [Line Items]
Senior secured leverage ratio	2.75
Repayment of Term Loan, percentage	25.00%
Senior Secured Term Loan B [Member] \| Senior Secured Leverage Ratio Is No More Than 2.50 to 1.00 [Member]
Debt Instrument [Line Items]
Senior secured leverage ratio	2.50
Repayment of Term Loan, percentage	0.00%
Senior Secured Term Loan B [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Senior secured leverage ratio	3.50
Repayment of Term Loan, percentage	50.00%

Long-Term Debt (Components of Long-Term Debt) (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Long-term debt	$ 1,373,286	$ 1,453,644
Less: Current portion	7,935	7,935
Long-term debt, net	1,365,351	1,445,709
Senior secured term loan [Member]
Debt Instrument [Line Items]
Long-term debt	778,095	779,888
Original issue discount on senior secured Term Loan B	3,502	3,693
Global ABL Facility [Member]
Debt Instrument [Line Items]
Long-term debt	595,171	673,716
Other [Member]
Debt Instrument [Line Items]
Long-term debt	$ 20	$ 40

Stockholders' Equity (Narrative) (Details) - shares	1 Months Ended		3 Months Ended		51 Months Ended
Stockholders' Equity (Narrative) (Details) - shares	Apr. 30, 2015	Feb. 28, 2015	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015
2011 Omnibus Incentive Plan [Member]
Stockholders Equity [Line Items]
Shares reserved for Incentive Plan			3,250,000		3,250,000
Stock granted					3,301,436
Subsequent Event [Member] \| 2011 Omnibus Incentive Plan [Member]
Stockholders Equity [Line Items]
Additional shares reserved for Incentive Plan	4,250,000
Director [Member] \| 2011 Omnibus Incentive Plan [Member]
Stockholders Equity [Line Items]
Vesting period			1 year
Minimum [Member] \| 2011 Omnibus Incentive Plan [Member]
Stockholders Equity [Line Items]
Vesting period			3 years
Maximum [Member] \| 2011 Omnibus Incentive Plan [Member]
Stockholders Equity [Line Items]
Vesting period			5 years
Stock Options [Member]
Stockholders Equity [Line Items]
Anti-dilutive securities			3,900,000	1,100,000
Stock Options [Member] \| 2011 Omnibus Incentive Plan [Member]
Stockholders Equity [Line Items]
Maximum term for stock option plan grant			10 years
Restricted Stock [Member]
Stockholders Equity [Line Items]
Stock granted		514,805
Anti-dilutive securities			0	0
Performance Shares [Member]
Stockholders Equity [Line Items]
Stock granted		195,082
Restricted Stock Units (RSUs) [Member]
Stockholders Equity [Line Items]
Stock granted		72,259

Stockholders' Equity (Accumulated Other Comprehensive Loss in Accompanying Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Dec. 31, 2014
Stockholders' Equity [Abstract]
Currency translation adjustments	$ (189,415)	$ (136,265)
Pension related adjustments	(613)	(613)
Accumulated other comprehensive loss	$ (190,028)	$ (136,878)

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References + Details

Stockholders' Equity (Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Stockholders' Equity [Abstract]
Net income	$ 29,065	$ 23,520
Average basic shares outstanding	102,116	101,924
Effect of dilutive securities	125	814
Average diluted shares outstanding	102,241	102,738
Net income per share:
Basic	$ 0.28	$ 0.23
Diluted	$ 0.28	$ 0.23

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Segment Information (Narrative) (Details)	3 Months Ended
Segment Information (Narrative) (Details)	Mar. 31, 2015 segment
Segment Information [Abstract]
Number of operating segments	3

Segment Information (Schedule of Financial Information for Each Segment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Sales
Sales	$ 1,292,290	$ 1,305,679
Operating income
Operating income	60,474	60,743
Interest expense	(14,596)	(15,148)
Other, net	(3,700)	(8,900)
Income before income taxes	42,202	36,722
Total assets
Total assets	3,720,410		$ 3,873,821
U.S. [Member]
Sales
Sales	971,800	948,000
Operating income
Operating income	51,800	54,100
Total assets
Total assets	3,039,700		3,111,900
Canada [Member]
Sales
Sales	119,400	166,200
Operating income
Operating income	5,400	7,200
Total assets
Total assets	166,500		204,100
International [Member]
Sales
Sales	201,100	191,500
Operating income
Operating income	3,300	$ (600)
Total assets
Total assets	$ 514,200		$ 557,800

Segment Information (Schedule of Net Sales by Product Line) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Energy carbon steel tubular products [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	$ 371,745	$ 337,457
Energy carbon steel tubular products [Member] \| Line pipe [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	266,082	207,238
Energy carbon steel tubular products [Member] \| Oil country tubular goods (OCTG) [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	105,663	130,219
Valves, fittings, flanges and all other products [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	920,545	968,222
Valves, fittings, flanges and all other products [Member] \| Valves and Specialty Products [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	411,223	429,223
Valves, fittings, flanges and all other products [Member] \| Carbon steel fittings and flanges and stainless steel and alloy pipe and fittings [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	269,359	290,340
Valves, fittings, flanges and all other products [Member] \| Other [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	$ 239,963	$ 248,659

Fair Value Measurements (Details) - USD ($) $ in Millions	Mar. 31, 2015	Dec. 31, 2014
Long-term Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value of debt	$ 1,373.0	$ 1,454.0
Long-term Debt [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of our debt	1,348.0	1,407.0
Foreign exchange forward contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount of forward foreign exchange contracts and options	52.3	77.9
Foreign exchange forward contracts [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of forward foreign exchange contracts and options	$ 0.6	$ 1.6

Commitments and Contingencies (Details)	Mar. 31, 2015 claim lawsuit
Commitments and Contingencies [Abstract]
Number of lawsuits \| lawsuit	421
Asbestos related pending claims \| claim	1,059