v3.22.2.2
Document and Entity Information
Dec. 06, 2022
Cover [Abstract]  
Amendment Flag false
Entity Central Index Key 0001439095
Document Type 8-K
Document Period End Date Dec. 06, 2022
Entity Registrant Name MRC GLOBAL INC.
Entity Incorporation State Country Code DE
Entity File Number 001-35479
Entity Tax Identification Number 20-5956993
Entity Address, Address Line One 1301 McKinney Street
Entity Address, Address Line Two Suite 2300
Entity Address, City or Town Houston
Entity Address, State or Province TX
Entity Address, Postal Zip Code 77010
City Area Code (877)
Local Phone Number 294-7574
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, par value $0.01
Trading Symbol MRC
Security Exchange Name NYSE
Entity Emerging Growth Company false