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Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2019
Feb. 21, 2020
Jun. 30, 2019
Cover page.      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 001-35416    
Entity Registrant Name U.S. Silica Holdings, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 26-3718801    
Entity Address, Address Line One 24275 Katy Freeway, Suite 600    
Entity Address, City or Town Katy    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 77494    
City Area Code 281    
Title of 12(b) Security Common Stock, par value $0.01 per share    
Local Phone Number 258-2170    
Trading Symbol SLCA    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Interactive Data Current Yes    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 905,828,280
Entity Common Stock, Shares Outstanding   73,750,501  
Documents Incorporated by Reference
Certain sections of the Proxy Statement for the 2020 Annual Meeting of Shareholders for U.S. Silica Holdings, Inc. (the “2020 Proxy Statement”) are incorporated by reference in Part III of this Annual Report on Form 10-K where indicated.
   
Amendment Flag false    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001524741    
Current Fiscal Year End Date --12-31