General (Notes)	12 Months Ended
Dec. 31, 2015
General [Abstract]
Business Description and Basis of Presentation [Text Block]	General Delek US Holdings, Inc. is the sole shareholder or owner of membership interests of Delek Refining, Inc. ("Refining"), Delek Finance, Inc., Delek Marketing & Supply, LLC, Lion Oil Company ("Lion Oil"), Delek Renewables, LLC, Delek Rail Logistics, Inc., Delek Logistics Services Company, MAPCO Express, Inc. ("MAPCO Express"), MAPCO Fleet, Inc., NTI Investments, LLC, GDK Bearpaw, LLC, Delek Helena, LLC, Commerce Way Insurance Company, Inc., Delek Transportation, LLC and Delek Land Holdings, LLC. Unless otherwise indicated or the context requires otherwise, the terms "we," "our," "us," "Delek" and the "Company" are used in this report to refer to Delek US Holdings, Inc. and its consolidated subsidiaries. Delek is listed on the New York Stock Exchange under the symbol "DK."

General (Notes)

12 Months Ended

Dec. 31, 2015

Business Description and Basis of Presentation [Text Block]

General

Delek US Holdings, Inc. is the sole shareholder or owner of membership interests of Delek Refining, Inc. ("Refining"), Delek Finance, Inc., Delek Marketing & Supply, LLC, Lion Oil Company ("Lion Oil"), Delek Renewables, LLC, Delek Rail Logistics, Inc., Delek Logistics Services Company, MAPCO Express, Inc. ("MAPCO Express"), MAPCO Fleet, Inc., NTI Investments, LLC, GDK Bearpaw, LLC, Delek Helena, LLC, Commerce Way Insurance Company, Inc., Delek Transportation, LLC and Delek Land Holdings, LLC. Unless otherwise indicated or the context requires otherwise, the terms "we," "our," "us," "Delek" and the "Company" are used in this report to refer to Delek US Holdings, Inc. and its consolidated subsidiaries. Delek is listed on the New York Stock Exchange under the symbol "DK."