Cover page - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2019

Jan. 31, 2020

Jun. 28, 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

001-35914

Entity Registrant Name

MURPHY USA INC.

Entity Incorporation, State or Country Code

DE

Entity Tax Identification Number

46-2279221

Entity Address, Address Line One

200 Peach Street

Entity Address, City or Town

El Dorado,

Entity Address, State or Province

AR

Entity Address, Postal Zip Code

71730-5836

City Area Code

870

Local Phone Number

875-7600

Title of 12(b) Security

Common Stock, $0.01 Par Value

Trading Symbol

MUSA

Security Exchange Name

NYSE

Entity Well-Known Seasoned Issuer

Yes

Entity Voluntary Filers

No

Entity Current Reporting Status

Yes

Entity Interactive Data Current

Yes

Entity Filer Category

Large Accelerated Filer

Entity Small Company

false

Entity Emerging Growth Company

false

Entity Shell Company

false

Entity Public Float

$ 2,686,319

Entity Common Stock, Shares Outstanding

30,460,112

Amendment Flag

false

Entity Central Index Key

0001573516

Current Fiscal Year End Date

--12-31

Document Fiscal Year Focus

2019

Document Fiscal Period Focus

FY

Documents Incorporated by Reference

Portions of the Registrant’s definitive Proxy Statement relating to the Annual Meeting of Stockholders on May 7, 2020 will be incorporated by reference in Part III herein.