Murphy USA (MUSA) 10-Q 3 Aug 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information	6 Months Ended
	Jun. 30, 2017shares
Document And Entity Information [Abstract]
Entity Registrant Name	Murphy USA Inc.
Trading Symbol	MUSA
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Entity Central Index Key	1,573,516
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Entity Common Stock, Shares Outstanding	36,051,935

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 197,095	$ 153,813	$ 254,210	$ 102,335
Accounts receivable—trade, less allowance for doubtful accounts of $1,921 in 2017 and $1,891 in 2016	164,372	183,519
Inventories, at lower of cost or market	179,044	153,351
Prepaid expenses and other current assets	25,233	24,871
Total current assets	565,744	515,554
Property, plant and equipment, at cost less accumulated depreciation and amortization of $818,409 in 2017 and $780,426 in 2016	1,613,234	1,532,655
Other assets	44,208	40,531
Total assets	2,223,186	2,088,740
Current liabilities
Current maturities of long-term debt	14,958	40,596
Trade accounts payable and accrued liabilities	394,303	473,370
Income taxes payable	0	594
Total current liabilities	409,261	514,560
Long-term debt, including capitalized lease obligations	869,086	629,622
Deferred income taxes	217,670	204,656
Asset retirement obligations	26,978	26,200
Deferred credits and other liabilities	19,550	16,626
Total liabilities	1,542,545	1,391,664
Stockholders' Equity
Preferred Stock, par $0.01, (authorized 20,000,000 shares, none outstanding)	0	0
Common Stock, par $0.01, (authorized 200,000,000 shares, 46,767,164 and 46,767,164 shares issued at 2017 and 2016, respectively)	468	468
Treasury stock (10,715,229 and 9,831,196 shares held at June 30, 2017 and December 31, 2016, respectively)	(667,522)	(608,001)
Additional paid in capital (APIC)	545,887	555,338
Retained earnings	801,808	749,271
Total stockholders' equity	680,641	697,076	$ 757,912	$ 792,290
Total liabilities and stockholders' equity	$ 2,223,186	$ 2,088,740

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Mar. 31, 2013
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 1,921	$ 1,891
Property, plant and equipment, accumulated depreciation and amortization	$ 818,409	$ 780,426
Preferred stock par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock shares authorized (in shares)	20,000,000	20,000,000
Preferred stock shares outstanding (in shares)	0	0
Common stock par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Common stock shares authorized (in shares)	200,000,000	200,000,000
Common stock shares issued (in shares)	46,767,164	46,767,164
Treasury stock, shares held (in shares)	10,715,229	9,831,196

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Operating Revenues
Petroleum product sales	[1]	$ 2,567,719	$ 2,371,735	$ 4,969,973	$ 4,260,019
Merchandise sales		605,698	589,457	1,171,488	1,151,194
Other operating revenues		37,643	44,570	69,217	84,811
Total operating revenues		3,211,060	3,005,762	6,210,678	5,496,024
Operating Expenses
Petroleum product cost of goods sold	[1]	2,413,175	2,242,936	4,742,508	4,026,065
Merchandise cost of goods sold		507,979	496,801	984,940	972,603
Station and other operating expenses		129,433	125,145	254,177	241,919
Depreciation and amortization		27,513	23,685	54,525	47,171
Selling, general and administrative		31,347	32,320	69,593	63,823
Accretion of asset retirement obligations		446	412	888	825
Total operating expenses		3,109,893	2,921,299	6,106,631	5,352,406
Gain (loss) on sale of assets		130	(490)	(3,368)	88,975
Income (loss) from operations		101,297	83,973	100,679	232,593
Other income (expense)
Interest income		318	250	365	330
Interest expense		(11,644)	(10,210)	(21,142)	(19,598)
Other nonoperating income		3	85	235	118
Total other income (expense)		(11,323)	(9,875)	(20,542)	(19,150)
Income before income taxes		89,974	74,098	80,137	213,443
Income tax expense		34,411	27,788	27,600	81,259
Net Income (Loss)		$ 55,563	$ 46,310	$ 52,537	$ 132,184
Basic and Diluted Earnings Per Common Share
Net income (loss) per basic share (in dollars per share)		$ 1.52	$ 1.18	$ 1.43	$ 3.29
Net income (loss) per diluted share (in dollars per share)		$ 1.51	$ 1.17	$ 1.42	$ 3.26
Weighted-Average Common Shares Outstanding (in thousands):
Basic (in shares)		36,525	39,360	36,700	40,134
Diluted (in shares)		36,861	39,720	37,018	40,505
Supplemental information:
Excise taxes		$ 504,582	$ 487,923	$ 984,650	$ 960,533
[1]	Includes excise taxes of $504,582 and $487,923 for the three months ended June 30, 2017 and 2016, respectively and $984,650 and $960,533 for the six months ended June 30, 2017 and 2016, respectively.

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Operating Activities
Net income	$ 55,563	$ 46,310	$ 52,537	$ 132,184
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	27,513	23,685	54,525	47,171
Deferred and noncurrent income tax charges			13,014	14,605
Accretion of asset retirement obligations	446	412	888	825	$ 1,650
Pretax (gains) losses from sale of assets	(130)	490	3,368	(88,975)
Net (increase) decrease in noncash operating working capital			(84,718)	57,427
Other operating activities - net			828	5,365
Net cash provided by (required by) operating activities			40,442	168,602
Investing Activities
Property additions			(134,150)	(116,569)
Proceeds from sale of assets			715	86,298
Changes in restricted cash			0	13,429
Other investing activities - net			(4,143)	(15,138)
Net cash required by investing activities			(137,578)	(31,980)
Financing Activities
Purchase of treasury stock			(66,337)	(167,105)
Borrowings of debt			338,750	200,000
Repayments of debt			(125,901)	(10,165)
Debt issuance costs			(935)	(3,240)
Amounts related to share-based compensation			(5,159)	(4,237)
Net cash provided by financing activities			140,418	15,253
Net increase in cash and cash equivalents			43,282	151,875
Cash and cash equivalents at January 1			153,813	102,335	102,335
Cash and cash equivalents at June 30	$ 197,095	$ 254,210	$ 197,095	$ 254,210	$ 153,813

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	APIC	Retained Earnings
Beginning balance at Dec. 31, 2015	$ 792,290	$ 468	$ (294,139)	$ 558,182	$ 527,779
Balance (in shares) at Dec. 31, 2015		46,767,164
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	132,184				132,184
Purchase of treasury stock	(167,105)		(167,105)
Issuance of common stock	0
Issuance of treasury stock	0		6,748	(6,748)
Amounts related to share-based compensation	(4,237)			(4,237)
Share-based compensation expense	4,780			4,780
Ending balance at Jun. 30, 2016	757,912	$ 468	(454,496)	551,977	659,963
Balance (in shares) at Jun. 30, 2016		46,767,164
Beginning balance at Dec. 31, 2016	697,076	$ 468	(608,001)	555,338	749,271
Balance (in shares) at Dec. 31, 2016		46,767,164
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	52,537				52,537
Purchase of treasury stock	(66,337)		(66,337)
Issuance of common stock	0
Issuance of treasury stock	0		6,816	(6,816)
Amounts related to share-based compensation	(5,159)			(5,159)
Share-based compensation expense	2,524			2,524
Ending balance at Jun. 30, 2017	$ 680,641	$ 468	$ (667,522)	$ 545,887	$ 801,808
Balance (in shares) at Jun. 30, 2017		46,767,164

Description of Business and Bas

Description of Business and Basis of Presentation	6 Months Ended
	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis of Presentation	Description of Business and Basis of Presentation Description of business — Murphy USA Inc. (“Murphy USA” or the “Company”) markets refined products through a network of retail gasoline stations and to unbranded wholesale customers. Murphy USA’s owned retail stations are almost all located in close proximity to Walmart stores in 26 states and use the brand name Murphy USA®. Murphy USA also markets gasoline and other products at standalone stations under the Murphy Express brand. At June 30, 2017 , Murphy USA had a total of 1,411 Company stations of which 1,154 were Murphy USA and 257 were Murphy Express. Basis of Presentation — Murphy USA was incorporated in March 2013 and, in connection with its incorporation, Murphy USA issued 100 shares of common stock, par value $0.01 per share, to Murphy Oil Corporation (“Murphy Oil”) for $1.00 . On August 30, 2013, Murphy USA was separated from Murphy Oil through the distribution of 100% of the common stock of Murphy USA to holders of Murphy Oil stock. In preparing the financial statements of Murphy USA in conformity with accounting principles generally accepted in the United States, management has made a number of estimates and assumptions related to the reporting of assets, liabilities, revenues, expenses and the disclosure of contingent assets and liabilities. Actual results may differ from these estimates. In 2017, we revised our historical presentation of gains and losses on asset disposals and retirements, which are shown in our Consolidated Statements of Income as gain (loss) on sale of assets. This line item is currently, and will be prospectively, presented as a component of income from operations. Our accounting policy has been updated to reflect this presentation. Interim Financial Information — The interim period financial information presented in these consolidated financial statements is unaudited and includes all known accruals and adjustments, in the opinion of management, necessary for a fair presentation of the consolidated financial position of Murphy USA and its results of operations and cash flows for the periods presented. All such adjustments are of a normal and recurring nature. These interim consolidated financial statements should be read together with our audited financial statements for the years ended December 31, 2016 , 2015 and 2014 , included in our Annual Report on Form 10-K (File No. 001-35914), as filed with the Securities and Exchange Commission under the Securities Exchange Act of 1934 on February 22, 2017. Recently Issued Accounting Standards — In May 2014, the FASB issued ASU No. 2014-09 "Revenue from Contracts with Customers," which supersedes the revenue recognition requirements in the Accounting Standards Codification ("Codification") Topic 605, Revenue Recognition, and industry-specific guidance throughout the Industry Topics of the Codification. The core principle of the new ASU No. 2014-09 is for companies to recognize revenue from the transfer of goods or services to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods or services. The Company will adopt ASU No. 2014-09 beginning January 1, 2018 using the modified retrospective approach applied to those contracts that were not completed at that date. Prior periods will not be retrospectively adjusted. The Company has substantially completed its analysis to identify all revenue streams, and is currently determining the impact the ASU will have on its various revenue streams and consolidated financial statements. The Company anticipates completing its analysis during the second half of 2017 and we continue to evaluate the impact to our consolidated financial statements and disclosures. The Company is in the process of updating our existing controls and processes to comply with the guidance. The Company currently presents excise tax and other similar taxes collected on sales of refined products and remitted to governmental agencies on a gross basis, in both revenues and cost of petroleum products sold in the income statement. ASU 2014-09 requires the Company to either analyze each tax on a jurisdiction-by-jurisdiction basis to determine if it is the principal in the transaction and continue to present the tax on a gross basis or elect to report all taxes on a net basis. The Company expects to elect to assess all excise and other similar taxes on a jurisdiction-by-jurisdiction basis resulting in certain taxes to be presented on a net basis upon adoption of ASU 2014-09, thus reducing revenue in the income statement with no impact to net income or cash flows. The Company does not expect the impact on reported revenue for the year ended December 31, 2018, or the quarters therein, to be material. In February 2016, the FASB issued ASU No. 2016-02, "Leases (Topic 842)" (“ASU 2016-02”). ASU 2016-02 amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets. Lessor accounting will remain similar to lessor accounting under previous GAAP, while aligning with the FASB’s new revenue recognition guidance. ASU 2016-02 is effective for the Company beginning January 1, 2019. Early adoption of ASU 2016-02 is permitted. The standard requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. While this ASU will have an impact on our internal processes and controls and result in a change to our accounting, we are still in the evaluation and information gathering stage of implementing the guidance and can not yet estimate the potential impact. In March 2016, the FASB issued ASU No. 2016-09, "Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting", which amends the current stock compensation guidance. The amendments simplify the accounting for the taxes related to share-based payments, including adjustments to how excess tax benefits and a company’s payments for tax withholdings should be classified among other changes. The standard was effective for the Company on January 1, 2017. The primary impact of adoption for the first half of 2017 was the recognition of $1.9 million of excess tax benefits in the provision for income taxes rather than paid-in-capital for the current period. Additional amendments to the accounting for income taxes and minimum statutory withholding tax requirements had no impact to retained earnings as of January 1, 2017, where the cumulative effect of these changes is required to be recorded. The Company elected to continue to estimate forfeitures expected to occur to determine the amount of compensation cost to be recognized in each period. The Company elected to apply the presentation requirements for cash flows related to excess tax benefits prospectively as of January 1, 2017. The presentation requirements for cash flows related to employee taxes paid for withheld shares had no impact to any of the periods presented on the consolidated statement of cash flows, as such cash flows have historically been presented as a financing activity.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2017
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories consisted of the following: (Thousands of dollars) June 30, December 31, Finished products - FIFO basis $ 202,737 $ 207,903 Less LIFO reserve - finished products (128,515 ) (153,319 ) Finished products - LIFO basis 74,222 54,584 Store merchandise for resale 100,214 95,649 Materials and supplies 4,608 3,118 Total inventories $ 179,044 $ 153,351 At June 30, 2017 and December 31, 2016 , the replacement cost (market value) of last-in, first-out (LIFO) inventories exceeded the LIFO carrying value by $128.5 million and $153.3 million , respectively.

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt Long-term debt consisted of the following: (Thousands of dollars) June 30, December 31, 6% senior notes due 2023 (net of unamortized discount of $5,392 at June 30, 2017 and $5,826 at December 2 016) $ 494,608 $ 494,174 5.625% senior notes due 2027 (net of unamortized discount of $3,682 at June 30, 2017) 296,318 — Term loan due 2020 (effective rate of 3.78% at June 30, 2017) 97,000 180,000 Capitalized lease obligations, vehicles, due through 2021 1,909 1,451 Less unamortized debt issuance costs (5,791 ) (5,407 ) Total long-term debt 884,044 670,218 Less current maturities 14,958 40,596 Total long-term debt, net of current $ 869,086 $ 629,622 Senior Notes On August 14, 2013, Murphy Oil USA, Inc., our primary operating subsidiary, issued 6.00% Senior Notes due 2023 (the “2023 Senior Notes”) in an aggregate principal amount of $500 million . The 2023 Senior Notes are fully and unconditionally guaranteed by Murphy USA, and are guaranteed by certain 100% owned subsidiaries that guarantee our credit facilities. The indenture governing the 2023 Senior Notes contains restrictive covenants that limit, among other things, the ability of Murphy USA, Murphy Oil USA, Inc. and the restricted subsidiaries to incur additional indebtedness or liens, dispose of assets, make certain restricted payments or investments, enter into transactions with affiliates or merge with or into other entities. On April 25, 2017, Murphy Oil USA, Inc., issued $300 million of 5.625% Senior Notes due 2027 (the "2027 Senior Notes") under its existing shelf registration statement. The 2027 Senior Notes are fully and unconditionally guaranteed by Murphy USA, and are guaranteed by certain 100% owned subsidiaries that guarantee our credit facilities. The indenture governing the 2027 Senior Notes contains restrictive covenants that are essentially identical to the covenants for the 2023 Senior Notes. The 2023 and 2027 Senior Notes and the guarantees rank equally with all of our and the guarantors’ existing and future senior unsecured indebtedness and effectively junior to our and the guarantors’ existing and future secured indebtedness (including indebtedness with respect to the credit facilities) to the extent of the value of the assets securing such indebtedness. The 2023 and 2027 Senior Notes are structurally subordinated to all of the existing and future third-party liabilities, including trade payables, of our existing and future subsidiaries that do not guarantee the notes. As of June 30, 2017 , we have zero outstanding under our ABL facility. Credit Facilities and Term Loan In March 2016, we amended and extended our existing credit agreement. The credit agreement provides for a committed $450 million asset-based loan (ABL) facility (with availability subject to the borrowing base described below) and a $200 million term loan facility. It also provides for a $150 million uncommitted incremental facility. On March 10, 2016, Murphy Oil USA, Inc. borrowed $200 million under the term loan facility that has a four -year term. The borrowing base is, at any time of determination, the amount (net of reserves) equal to the sum of: • 100% of eligible cash at such time, plus • 90% of eligible credit card receivables at such time, plus • 90% of eligible investment grade accounts, plus • 85% of eligible other accounts, plus • 80% of eligible product supply/wholesale refined products inventory at such time, plus • 75% of eligible retail refined products inventory at such time, plus the lesser of (i) 70% of the average cost of eligible retail merchandise inventory at such time and (ii) 85% of the net orderly liquidation value of eligible retail merchandise inventory at such time. The ABL facility includes a $200 million sublimit for the issuance of letters of credit. Letters of credit issued under the ABL facility reduce availability under the ABL facility. Interest payable on the credit facilities is based on either: • the London interbank offered rate, adjusted for statutory reserve requirements (the “Adjusted LIBO Rate”); or • the Alternate Base Rate, which is defined as the highest of (a) the prime rate, (b) the federal funds effective rate from time to time plus 0.50% per annum and (c) the one-month Adjusted LIBO Rate plus 1.00% per annum, plus, (A) in the case of Adjusted LIBO Rate borrowings, (i) with respect to the ABL facility, spreads ranging from 1.50% to 2.00% per annum depending on a total debt to EBITDA ratio under the ABL facility or (ii) with respect to the term loan facility, spreads ranging from 2.50% to 2.75% per annum depending on a total debt to EBITDA ratio and (B) in the case of Alternate Base Rate borrowings, (i) with respect to the ABL facility, spreads ranging from 0.50% to 1.00% per annum depending on total debt to EBITDA ratio or (ii) with respect to the term loan facility, spreads ranging from 1.50% to 1.75% per annum depending on a total debt to EBITDA ratio. The interest rate period with respect to the Adjusted LIBO Rate interest rate option can be set at one , two , three , or six months as selected by us in accordance with the terms of the credit agreement. We were obligated to make quarterly amortization payments on the outstanding principal amount of the term loan facility beginning on July 1, 2016 equal to 5% of the aggregate principal amount of term loans made on March 10, 2016, with the remaining balance payable on the scheduled maturity date of the term loan facility. Borrowings under the credit facilities are prepayable at our option without premium or penalty. We are also required to prepay the term loan facility with the net cash proceeds of certain asset sales or casualty events, subject to certain exceptions. The credit agreement also includes certain customary mandatory prepayment provisions with respect to the ABL facility. The credit agreement contains certain covenants that limit, among other things, the ability of us and our subsidiaries to incur additional indebtedness or liens, to make certain investments, to enter into sale-leaseback transactions, to make certain restricted payments, to enter into consolidations, mergers or sales of material assets and other fundamental changes, to transact with affiliates, to enter into agreements restricting the ability of subsidiaries to incur liens or pay dividends, or to make certain accounting changes. In addition, the credit agreement requires us to maintain a minimum fixed charge coverage ratio of 1.0 to 1.0 when availability for at least three consecutive business days is less than the greater of (a) 17.5% of the lesser of the aggregate ABL facility commitments and the borrowing base and (b) $70,000,000 (including as of the most recent fiscal quarter end on the first date when availability is less than such amount), as well as a maximum secured total debt to EBITDA ratio of 4.5 to 1.0 at any time when term facility commitments or term loans are outstanding. As of June 30, 2017 , our fixed charge coverage ratio was 0.57 ; however, we had more than $100 million of availability under the ABL facility at that date so the fixed charge coverage ratio currently has no impact on our operations or liquidity. Our secured debt to EBITDA ratio as of June 30, 2017 was 0.26 to 1.0. The Senior Credit Agreement contains restrictions on certain payments, including dividends, when availability under the credit agreement is less than or equal to the greater of $100 million and 25% of the lesser of the revolving commitments and the borrowing base and our fixed charge coverage ratio is less than 1.0 to 1.0 (unless availability under the credit agreement is greater than $100 million and 40% of the lesser of the revolving commitments and the borrowing base). As of June 30, 2017 , our ability to make restricted payments was not limited as our availability under the borrowing base was more than $100 million , while our fixed charge coverage ratio under our Senior Credit Agreement was less than 1.0 to 1.0. As of December 31, 2016 , we had a shortfall of approximately $304.1 million of our net income and retained earnings subject to such restrictions before the fixed charge coverage ratio under our Senior Credit Agreement would exceed 1.0 to 1.0. All obligations under the credit agreement are guaranteed by Murphy USA and the subsidiary guarantors party thereto, and all obligations under the credit agreement, including the guarantees of those obligations, are secured by certain assets of Murphy USA, Murphy Oil USA, Inc. and the guarantors party thereto.

Asset Retirement Obligations (A

Asset Retirement Obligations (ARO)	6 Months Ended
	Jun. 30, 2017
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligations (ARO)	Asset Retirement Obligations (ARO) The majority of the ARO recognized by the Company at June 30, 2017 and December 31, 2016 related to the estimated costs to dismantle and abandon certain of its retail gasoline stations. The Company has not recorded an ARO for certain of its marketing assets because sufficient information is presently not available to estimate a range of potential settlement dates for the obligation. These assets are consistently being upgraded and are expected to be operational into the foreseeable future. In these cases, the obligation will be initially recognized in the period in which sufficient information exists to estimate the obligation. A reconciliation of the beginning and ending aggregate carrying amount of the ARO is shown in the following table. (Thousands of dollars) June 30, December 31, Balance at beginning of period $ 26,200 $ 24,345 Accretion expense 888 1,650 Liabilities incurred 167 379 Settlement of liabilities $ (277 ) $ (174 ) Balance at end of period $ 26,978 $ 26,200 The estimation of future ARO is based on a number of assumptions requiring professional judgment. The Company cannot predict the type of revisions to these assumptions that may be required in future periods due to the lack of availability of additional information.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The effective tax rate is calculated as the amount of income tax expense divided by income before income tax expense (benefit). For the three and six month periods ended June 30, 2017 and 2016 , the Company’s effective tax rates were as follows: 2017 2016 Three months ended June 30, 38.2% 37.5% Six months ended June 30, 34.4% 38.1% The effective tax rate for the three months ended June 30, 2017 was higher than the U.S. Federal tax rate of 35% but is in line with our estimated effective tax rate of 38% for the remainder of the year. For the six months ended June 30, 2017 , the tax rate was lower than the U.S. Federal tax rate due to impacts from first quarter tax benefits. The Company was included in Murphy Oil’s tax returns for the periods prior to the separation. The statute of several jurisdictions remains subject to audit by taxing authorities. As of June 30, 2017 , the earliest year remaining open for Federal examination is 2012 and for the states it ranges from 2009 - 2012 . In addition to the pre-separation returns being open under statute, the federal and state tax returns post separation are also open under statute for examination. Although the Company believes that recorded liabilities for uncertain tax positions are adequate, additional gains or losses could occur in future periods from resolution of outstanding unsettled matters. We adopted ASU 2016-09 on January 1, 2017, which requires the excess tax benefits or deficiencies to be reflected in the Consolidated Statements of Income as a component of the provision for income taxes whereas they previously were recognized in paid-in-capital. Total excess tax benefits recognized in the three and six months ended June 30, 2017 was $0.1 million and $1.9 million , respectively.

Incentive Plans

Incentive Plans	6 Months Ended
	Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Incentive Plans	Incentive Plans 2013 Long-Term Incentive Plan Effective August 30, 2013, certain of our employees participate in the Murphy USA 2013 Long-Term Incentive Plan which was subsequently amended and restated effective as of February 8, 2017 (the “MUSA 2013 Plan”). The MUSA 2013 Plan authorizes the Executive Compensation Committee of our Board of Directors (“the Committee”) to grant non-qualified or incentive stock options, stock appreciation rights, stock awards (including restricted stock and restricted stock unit awards), cash awards, and performance awards to our employees. No more than 5.5 million shares of MUSA common stock may be delivered under the MUSA 2013 Plan and no more than 1 million shares of common stock may be awarded to any one employee, subject to adjustment for changes in capitalization. The maximum cash amount payable pursuant to any “performance-based” award to any participant in any calendar year is $5 million . On February 8, 2017, the Committee granted nonqualified stock options for 114,800 shares at an exercise price of $65.75 per share under the terms of the MUSA 2013 Plan. The Black-Scholes valuation for these awards is $15.45 per option. The Committee also awarded time-based restricted stock units and performance-based restricted stock units (performance units) to certain employees on the same date. There were 29,075 time-based restricted units granted at an average grant date fair value of $65.41 along with 53,800 performance units. Half of the performance units vest based on a 3 -year return on average capital employed (ROACE) calculation and the other half vest based on a 3 -year total shareholder return (TSR) calculation that compares MUSA to a group of 16 peer companies. The portion of the awards that vest based on TSR qualify as a market condition and must be valued using a Monte Carlo valuation model. For the TSR portion of the awards, the fair value was determined to be $94.51 per unit. For the ROACE portion of the awards, the valuation will be based on the grant date fair value of $65.75 per unit and the number of awards will be periodically assessed to determine the probability of vesting. On February 8, 2017, the Committee also granted 50,075 time-based restricted stock units granted to certain employees with a grant date fair value of $65.75 per unit. 2013 Stock Plan for Non-employee Directors Effective August 8, 2013, Murphy USA adopted the 2013 Murphy USA Stock Plan for Non-employee Directors (the “Directors Plan”). The directors for Murphy USA are compensated with a mixture of cash payments and equity-based awards. Awards under the Directors Plan may be in the form of restricted stock, restricted stock units, stock options, or a combination thereof. An aggregate of 500,000 shares of common stock shall be available for issuance of grants under the Directors Plan. During the first quarter of 2017, the Company issued 15,948 restricted stock units to its non-employee directors at a weighted average grant date fair value of $66.01 per share. These shares vest in three years from the grant date. For the six months ended June 30, 2017 and 2016 , share based compensation was $2.5 million and $4.8 million , respectively. The income tax benefit realized for the tax deductions from options exercised for the six months ended June 30, 2017 and 2016 was $0.2 million and $1.4 million , respectively. Adoption of ASU 2016-09 On January 1, 2017, the Company adopted ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, which amended the current stock compensation guidance. As part of the adoption of this standard, the Company determined to leave its policy related to accounting for forfeitures based on estimates rather than changing to actual forfeitures. See Note 1 "Description of Business and Basis of Presentation" for information regarding the impact of adopting this standard for the Company.

Financial Instruments and Risk

Financial Instruments and Risk Management	6 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Instruments and Risk Management	Financial Instruments and Risk Management DERIVATIVE INSTRUMENTS — The Company makes limited use of derivative instruments to manage certain risks related to commodity prices. The use of derivative instruments for risk management is covered by operating policies and is closely monitored by the Company’s senior management. The Company does not hold any derivatives for speculative purposes and it does not use derivatives with leveraged or complex features. Derivative instruments are traded primarily with creditworthy major financial institutions or over national exchanges such as the New York Mercantile Exchange (“NYMEX”). As of June 30, 2017 , all current derivative activity is immaterial. At June 30, 2017 and December 31, 2016 , cash deposits of $2.5 million and $1.8 million related to commodity derivative contracts were reported in Prepaid expenses and other current assets in the Consolidated Balance Sheets, respectively. These cash deposits have not been used to increase the reported net assets or reduce the reported net liabilities on the derivative contracts at June 30, 2017 or December 31, 2016 , respectively.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per common share is computed by dividing net income available to common stockholders by the weighted average of common shares outstanding during the period. Diluted earnings per common share adjusts basic earnings per common share for the effects of stock options and restricted stock in the periods where such items are dilutive. On January 25, 2016, the Company announced that it would proceed with an independent growth plan in which we will concentrate on acquiring land from third parties rather than acquiring land directly from Walmart. In conjunction with this announcement, the Board of Directors approved a strategic allocation of capital for the Company to pursue new additional growth opportunities and to undertake a share repurchase program of the Company's common stock. The Board authorized up to $500 million in total for this activity through December 31, 2017. For the six months ended June 30, 2017 , the Company acquired 994,231 shares of common stock for an average price of $66.72 per share including brokerage fees. The Company has remaining authority of $110.4 million under our current program. The following table provides a reconciliation of basic and diluted earnings per share computations for the three and six months ended June 30, 2017 and 2016 (in thousands, except per share amounts): Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Earnings per common share: Net income per share - basic Net income attributable to common stockholders $ 55,563 $ 46,310 $ 52,537 $ 132,184 Weighted average common shares outstanding (in thousands) 36,525 39,360 36,700 40,134 Earnings per common share $ 1.52 $ 1.18 $ 1.43 $ 3.29 Earnings per common share - assuming dilution: Net income (loss) per share - diluted Net income (loss) attributable to common stockholders $ 55,563 $ 46,310 $ 52,537 $ 132,184 Weighted average common shares outstanding (in thousands) 36,525 39,360 36,700 40,134 Common equivalent shares: Dilutive options 336 360 318 371 Weighted average common shares outstanding - assuming dilution (in thousands) 36,861 39,720 37,018 40,505 Earnings per common share assuming dilution $ 1.51 $ 1.17 $ 1.42 $ 3.26

Other Financial Information

Other Financial Information	6 Months Ended
	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Other Financial Information	Other Financial Information OTHER OPERATING REVENUES – Other operating revenues in the Consolidated Statements of Income include the following items: Three Months Ended June 30, Six Months Ended June 30, (Thousands of dollars) 2017 2016 2017 2016 Renewable Identification Numbers (RINs) sales $ 36,618 $ 43,868 $ 65,646 $ 82,643 Other 1,025 702 3,571 2,168 Other operating revenues $ 37,643 $ 44,570 $ 69,217 $ 84,811 CASH FLOW DISCLOSURES — Cash income taxes paid (collected), net of refunds, were $13.1 million and $15.1 million for the six month periods ended June 30, 2017 and 2016 , respectively. Interest paid, net of amounts capitalized, was $17.1 million and $18.1 million for the six month periods ended June 30, 2017 and 2016 , respectively. Six Months Ended June 30, (Thousands of dollars) 2017 2016 Accounts receivable $ 19,192 $ (11,921 ) Inventories (25,712 ) 3,412 Prepaid expenses and other current assets (362 ) 23,978 Accounts payable and accrued liabilities (77,242 ) 17,955 Income taxes payable (594 ) 24,003 Net decrease (increase) in noncash operating working capital $ (84,718 ) $ 57,427

Assets and Liabilities Measured

Assets and Liabilities Measured at Fair Value	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Assets and Liabilities Measure at Fair Value	Assets and Liabilities Measured at Fair Value The Company carries certain assets and liabilities at fair value in its Consolidated Balance Sheets. The fair value hierarchy is based on the quality of inputs used to measure fair value, with Level 1 being the highest quality and Level 3 being the lowest quality. Level 1 inputs are quoted prices in active markets for identical assets or liabilities. Level 2 inputs are observable inputs other than quoted prices included within Level 1. Level 3 inputs are unobservable inputs which reflect assumptions about pricing by market participants. At the balance sheet date, the fair value of derivative contracts were determined using NYMEX quoted values but were immaterial. The following table presents the carrying amounts and estimated fair values of financial instruments held by the Company at June 30, 2017 and December 31, 2016 . The fair value of a financial instrument is the amount at which the instrument could be exchanged in a current transaction between willing parties. The table excludes Cash and cash equivalents, Accounts receivable-trade, Trade accounts payable and accrued liabilities, all of which had fair values approximating carrying amounts. The fair value of Current and Long-term debt was estimated based on rates offered to the Company at that time for debt of the same maturities. The Company has off-balance sheet exposures relating to certain financial guarantees and letters of credit. The fair value of these, which represents fees associated with obtaining the instruments, was nominal. At June 30, 2017 At December 31, 2016 Carrying Carrying (Thousands of dollars) Amount Fair Value Amount Fair Value Financial liabilities Current and long-term debt $ (884,044 ) $ (916,128 ) $ (670,218 ) $ (690,114 )

Contingencies

Contingencies	6 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies The Company’s operations and earnings have been and may be affected by various forms of governmental action. Examples of such governmental action include, but are by no means limited to: tax increases and retroactive tax claims; import and export controls; price controls; allocation of supplies of crude oil and petroleum products and other goods; laws and regulations intended for the promotion of safety and the protection and/or remediation of the environment; governmental support for other forms of energy; and laws and regulations affecting the Company’s relationships with employees, suppliers, customers, stockholders and others. Because governmental actions are often motivated by political considerations, may be taken without full consideration of their consequences, and may be taken in response to actions of other governments, it is not practical to attempt to predict the likelihood of such actions, the form the actions may take or the effect such actions may have on the Company. ENVIRONMENTAL MATTERS AND LEGAL MATTERS — Murphy USA is subject to numerous federal, state and local laws and regulations dealing with the environment. Violation of such environmental laws, regulations and permits can result in the imposition of significant civil and criminal penalties, injunctions and other sanctions. A discharge of hazardous substances into the environment could, to the extent such event is not insured, subject the Company to substantial expense, including both the cost to comply with applicable regulations and claims by neighboring landowners and other third parties for any personal injury, property damage and other losses that might result. The Company currently owns or leases, and has in the past owned or leased, properties at which hazardous substances have been or are being handled. Although the Company believes it has used operating and disposal practices that were standard in the industry at the time, hazardous substances may have been disposed of or released on or under the properties owned or leased by the Company or on or under other locations where they have been taken for disposal. In addition, many of these properties have been operated by third parties whose management of hazardous substances was not under the Company’s control. Under existing laws the Company could be required to remediate contaminated property (including contaminated groundwater) or to perform remedial actions to prevent future contamination. Certain of these contaminated properties are in various stages of negotiation, investigation, and/or cleanup, and the Company is investigating the extent of any related liability and the availability of applicable defenses. With the sale of the U.S. refineries in 2011, Murphy Oil retained certain liabilities related to environmental matters. Murphy Oil also obtained insurance covering certain levels of environmental exposures. The Company believes costs related to these sites will not have a material adverse effect on Murphy USA’s net income, financial condition or liquidity in a future period. Certain environmental expenditures are likely to be recovered by the Company from other sources, primarily environmental funds maintained by certain states. Since no assurance can be given that future recoveries from other sources will occur, the Company has not recorded a benefit for likely recoveries at June 30, 2017 , however certain jurisdictions provide reimbursement for these expenses which have been considered in recording the net exposure. The U.S. Environmental Protection Agency (EPA) currently considers the Company a Potentially Responsible Party (PRP) at one Superfund site. The potential total cost to all parties to perform necessary remedial work at this site may be substantial. However, based on current negotiations and available information, the Company believes that it is a de minimis party as to ultimate responsibility at the Superfund site. Accordingly, the Company has not recorded a liability for remedial costs at the Superfund site at June 30, 2017 . The Company could be required to bear a pro rata share of costs attributable to nonparticipating PRPs or could be assigned additional responsibility for remediation at this site or other Superfund sites. The Company believes that its share of the ultimate costs to clean-up this site will be immaterial and will not have a material adverse effect on its net income, financial condition or liquidity in a future period. Based on information currently available to the Company, the amount of future remediation costs to be incurred to address known contamination sites is not expected to have a material adverse effect on the Company’s future net income, cash flows or liquidity. However, there is the possibility that additional environmental expenditures could be required to address contamination, including as a result of discovering additional contamination or the imposition of new or revised requirements applicable to known contamination. Other than as noted above, Murphy USA is engaged in a number of other legal proceedings, all of which the Company considers routine and incidental to its business. Based on information currently available to the Company, the ultimate resolution of those other legal matters is not expected to have a material adverse effect on the Company’s net income, financial condition or liquidity in a future period. INSURANCE — The Company maintains insurance coverage at levels that are customary and consistent with industry standards for companies of similar size. Murphy USA maintains statutory workers compensation insurance with a deductible of $1.0 million per occurrence, general liability insurance with a deductible of $3.0 million per occurrence, and auto liability insurance with a deductible of $0.3 million per occurrence. As of June 30, 2017 , there were a number of outstanding claims that are of a routine nature. The estimated incurred but unpaid liabilities relating to these claims are included in Trade account payables and accrued liabilities on the Consolidated Balance Sheets. While the ultimate outcome of these claims cannot presently be determined, management believes that the accrued liability of $19.5 million will be sufficient to cover the related liability for all insurance claims and that the ultimate disposition of these claims will have no material effect on the Company’s financial position and results of operations. The Company has obtained insurance coverage as appropriate for the business in which it is engaged, but may incur losses that are not covered by insurance or reserves, in whole or in part, and such losses could adversely affect our results of operations and financial position. TAX MATTERS — Murphy USA is subject to extensive tax liabilities imposed by multiple jurisdictions, including income taxes, indirect taxes (excise/duty, sales/use and gross receipts taxes), payroll taxes, franchise taxes, withholding taxes and ad valorem taxes. New tax laws and regulations and changes in existing tax laws and regulations are continuously being enacted or proposed that could result in increased expenditures for tax liabilities in the future. Many of these liabilities are subject to periodic audits by the respective taxing authority. Subsequent changes to our tax liabilities because of these audits may subject us to interest and penalties. OTHER MATTERS — In the normal course of its business, the Company is required under certain contracts with various governmental authorities and others to provide financial guarantees or letters of credit that may be drawn upon if the Company fails to perform under those contracts. At June 30, 2017 , the Company had contingent liabilities of $16.9 million on outstanding letters of credit. The Company has not accrued a liability in its balance sheet related to these financial guarantees and letters of credit because it is believed that the likelihood of having these drawn is remote.

Business Segment

Business Segment	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Business Segment	Business Segment The Company's operations have one operating segment which is Marketing. The operations include the sale of retail motor fuel products and convenience merchandise along with the wholesale and bulk sale capabilities of our Product Supply and Wholesale ("PS&W") group. As the primary purpose of the PS&W group is to support our retail operations and provide fuel for their daily operation, the bulk and wholesale fuel sales are secondary to the support functions played by these groups. As such, they are all treated as one segment for reporting purposes as they sell the same products. This Marketing segment contains essentially all of the revenue generating functions of the Company. Results not included in the reportable segment include Corporate and Other Assets. The reportable segment was determined based on information reviewed by the Chief Operating Decision Maker (CODM). Three Months Ended June 30, 2017 June 30, 2016 Total Assets at External Income External Income (Thousands of dollars) June 30, Revenues (Loss) Revenues (Loss) Marketing 1,914,740 $ 3,211,038 $ 63,714 $ 3,005,750 $ 53,442 Corporate and other assets 308,446 22 (8,151 ) 12 (7,132 ) Total 2,223,186 $ 3,211,060 $ 55,563 $ 3,005,762 $ 46,310 Six Months Ended June 30, 2017 June 30, 2016 External Income External Income (Thousands of dollars) Revenues (Loss) Revenues (Loss) Marketing 6,210,444 64,314 $ 5,495,808 $ 145,867 Corporate and other assets 234 (11,777 ) 216 (13,683 ) Total $ 6,210,678 $ 52,537 $ 5,496,024 $ 132,184

Guarantor Subsidiaries

Guarantor Subsidiaries	6 Months Ended
	Jun. 30, 2017
Guarantor Subsidiaries [Abstract]
Guarantor Subsidiaries	Guarantor Subsidiaries Certain of the Company’s 100% owned, domestic subsidiaries (the “Guarantor Subsidiaries”) fully and unconditionally guarantee, on a joint and several basis, certain of the outstanding indebtedness of the Company, including the 6.00% senior notes due 2023 and the 5.625% senior notes due 2027. The following consolidating schedules present financial information on a consolidated basis in conformity with the SEC’s Regulation S-X Rule 3-10(d): CONSOLIDATING BALANCE SHEET (unaudited) (Thousands of dollars) June 30, 2017 Assets Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Current assets Cash and cash equivalents — 197,090 5 — — 197,095 Accounts receivable—trade, less allowance for doubtful accounts of $1,921 in 2017 — 164,372 — — — 164,372 Inventories, at lower of cost or market — 179,044 — — — 179,044 Prepaid expenses and other current assets — 25,230 3 — — 25,233 Total current assets — 565,736 8 — — 565,744 Property, plant and equipment, at cost less accumulated depreciation and amortization of $818,409 in 2017 — 1,612,436 798 — — 1,613,234 Investments in subsidiaries 2,030,647 144,911 — — (2,175,558 ) — Other assets — 44,208 — — — 44,208 Total assets 2,030,647 2,367,291 806 — (2,175,558 ) 2,223,186 Liabilities and Stockholders' Equity Current liabilities Current maturities of long-term debt — 14,958 — — — 14,958 Inter-company accounts payable 689,653 (484,066 ) (51,249 ) (154,338 ) — — Trade accounts payable and accrued liabilities — 394,303 — — — 394,303 Total current liabilities 689,653 (74,805 ) (51,249 ) (154,338 ) — 409,261 Long-term debt, including capitalized lease obligations — 869,086 — — — 869,086 Deferred income taxes — 217,670 — — 217,670 Asset retirement obligations — 26,978 — — — 26,978 Deferred credits and other liabilities — 19,550 — — — 19,550 Total liabilities 689,653 1,058,479 (51,249 ) (154,338 ) — 1,542,545 Stockholders' Equity Preferred Stock, par $0.01 (authorized 20,000,000 shares, none outstanding) — — — — — — Common Stock, par $0.01 (authorized 200,000,000 shares, 46,767,164 shares issued at June 30, 2017) 468 1 60 — (61 ) 468 Treasury Stock (10,715,229 shares held at June 30, 2017 ) (667,522 ) — — — — (667,522 ) Additional paid in capital (APIC) 1,206,240 568,482 52,004 87,543 (1,368,382 ) 545,887 Retained earnings 801,808 740,329 (9 ) 66,795 (807,115 ) 801,808 Total stockholders' equity 1,340,994 1,308,812 52,055 154,338 (2,175,558 ) 680,641 Total liabilities and stockholders' equity 2,030,647 2,367,291 806 — (2,175,558 ) 2,223,186 CONSOLIDATING BALANCE SHEET (Thousands of dollars) December 31, 2016 Assets Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Current assets Cash and cash equivalents $ — $ 153,813 $ — $ — $ — $ 153,813 Accounts receivable—trade, less allowance for doubtful accounts of $1,891 in 2016 — 183,519 — — — 183,519 Inventories, at lower of cost or market — 153,351 — — — 153,351 Prepaid expenses and other current assets — 24,871 — — — 24,871 Total current assets — 515,554 — — — 515,554 Property, plant and equipment, at cost less accumulated depreciation and amortization of $780,426 in 2016 — 1,532,655 — — — 1,532,655 Investments in subsidiaries 1,978,110 144,917 — — (2,123,027 ) — Other assets — 40,531 — — — 40,531 Total assets $ 1,978,110 $ 2,233,657 $ — $ — $ (2,123,027 ) $ 2,088,740 Liabilities and Stockholders' Equity Current liabilities Current maturities of long-term debt $ — $ 40,596 $ — $ — $ — $ 40,596 Inter-company accounts payable 623,316 (416,914 ) (52,064 ) (154,338 ) — — Trade accounts payable and accrued liabilities — 473,370 — — — 473,370 Income taxes payable — 591 3 — — 594 Total current liabilities 623,316 97,643 (52,061 ) (154,338 ) — 514,560 Long-term debt, including capitalized lease obligations — 629,622 — — — 629,622 Deferred income taxes — 204,656 — — — 204,656 Asset retirement obligations — 26,200 — — — 26,200 Deferred credits and other liabilities — 16,626 — — — 16,626 Total liabilities 623,316 974,747 (52,061 ) (154,338 ) — 1,391,664 Stockholders' Equity Preferred Stock, par $0.01 (authorized 20,000,000 shares, none outstanding) — — — — — — Common Stock, par $0.01 (authorized 200,000,000 shares, 46,767,164 shares issued at December 31, 2016) 468 1 60 — (61 ) 468 Treasury Stock (9,831,196 shares held at December 31, 2016) (608,001 ) — — — — (608,001 ) Additional paid in capital (APIC) 1,213,056 571,117 52,004 87,543 (1,368,382 ) 555,338 Retained earnings 749,271 687,792 (3 ) 66,795 (754,584 ) 749,271 Total stockholders' equity 1,354,794 1,258,910 52,061 154,338 (2,123,027 ) 697,076 Total liabilities and stockholders' equity $ 1,978,110 $ 2,233,657 $ — $ — $ (2,123,027 ) $ 2,088,740 CONSOLIDATING INCOME STATEMENT (unaudited) (Thousands of dollars) Three Months Ended June 30, 2017 Operating Revenues Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Petroleum product sales — 2,567,719 — — — 2,567,719 Merchandise sales — 605,698 — — — 605,698 Other operating revenues — 37,641 2 — — 37,643 Total operating revenues — 3,211,058 2 — — 3,211,060 Operating Expenses Petroleum product cost of goods sold — 2,413,175 — — — 2,413,175 Merchandise cost of goods sold — 507,979 — — — 507,979 Station and other operating expenses — 129,432 1 — — 129,433 Depreciation and amortization — 27,507 6 — — 27,513 Selling, general and administrative — 31,347 — — — 31,347 Accretion of asset retirement obligations — 446 — — — 446 Total operating expenses — 3,109,886 7 — — 3,109,893 Gain (loss) on sale of assets — 130 — — — 130 Income (loss) from operations — 101,302 (5 ) — — 101,297 Other income (expense) Interest income — 318 — — — 318 Interest expense — (11,644 ) — — — (11,644 ) Other nonoperating income — 3 — — — 3 Total other income (expense) — (11,323 ) — — — (11,323 ) Income (loss) before income taxes — 89,979 (5 ) — — 89,974 Income tax expense — 34,411 — — — 34,411 Income (loss) — 55,568 (5 ) — — 55,563 Equity earnings in affiliates, net of tax (55,563 ) — — — 55,563 — Net Income (Loss) (55,563 ) 55,568 (5 ) — 55,563 55,563 CONSOLIDATING INCOME STATEMENT (unaudited) (Thousands of dollars) Three Months Ended June 30, 2016 Operating Revenues Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Petroleum product sales $ — $ 2,371,735 $ — $ — $ — $ 2,371,735 Merchandise sales — 589,457 — — — 589,457 Other operating revenues — 44,570 — — — 44,570 Total operating revenues $ — $ 3,005,762 $ — $ — $ — $ 3,005,762 Operating Expenses Petroleum product cost of goods sold — 2,242,936 — — — 2,242,936 Merchandise cost of goods sold — 496,801 — — — 496,801 Station and other operating expenses — 125,145 — — — 125,145 Depreciation and amortization — 23,685 — — — 23,685 Selling, general and administrative — 32,320 — — — 32,320 Accretion of asset retirement obligations — 412 — — — 412 Total operating expenses — 2,921,299 — — — 2,921,299 Gain (loss) on sale of assets $ — $ (490 ) $ — $ — $ — $ (490 ) Income from operations $ — $ 83,973 $ — $ — $ — $ 83,973 Other income (expense) Interest income — 250 — — — 250 Interest expense — (10,210 ) — — — (10,210 ) Other nonoperating income — 85 — — — 85 Total other income (expense) $ — $ (9,875 ) $ — $ — $ — $ (9,875 ) Income before income taxes — 74,098 — — — 74,098 Income tax expense — 27,788 — — — 27,788 Income — 46,310 — — — 46,310 Equity earnings in affiliates, net of tax 46,310 — — — (46,310 ) — Net Income (Loss) $ 46,310 $ 46,310 $ — $ — $ (46,310 ) $ 46,310 CONSOLIDATING INCOME STATEMENT (unaudited) (Thousands of dollars) Six Months Ended June 30, 2017 Operating Revenues Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Petroleum product sales — 4,969,973 — — — 4,969,973 Merchandise sales — 1,171,488 — — — 1,171,488 Other operating revenues — 69,215 2 — — 69,217 Total operating revenues — 6,210,676 2 — — 6,210,678 Operating Expenses Petroleum product cost of goods sold — 4,742,508 — — — 4,742,508 Merchandise cost of goods sold — 984,940 — — — 984,940 Station and other operating expenses — 254,176 1 — — 254,177 Depreciation and amortization — 54,519 6 — — 54,525 Selling, general and administrative — 69,592 1 — — 69,593 Accretion of asset retirement obligations — 888 — — — 888 Total operating expenses — 6,106,623 8 — — 6,106,631 Gain (loss) on sale of assets — (3,368 ) — — — (3,368 ) Income (loss) from operations — 100,685 (6 ) — — 100,679 Other income (expense) Interest income — 365 — — — 365 Interest expense — (21,142 ) — — — (21,142 ) Other nonoperating income — 235 — — — 235 Total other income (expense) — (20,542 ) — — — (20,542 ) Income (loss) before income taxes — 80,143 (6 ) — — 80,137 Income tax expense — 27,600 — — — 27,600 Income (loss) — 52,543 (6 ) — — 52,537 Equity earnings in affiliates, net of tax 52,537 (6 ) — — (52,531 ) — Net Income (Loss) 52,537 52,537 (6 ) — (52,531 ) 52,537 CONSOLIDATING INCOME STATEMENT (unaudited) (Thousands of dollars) Six Months Ended June 30, 2016 Operating Revenues Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Petroleum product sales $ — $ 4,260,019 $ — $ — $ — $ 4,260,019 Merchandise sales — 1,151,194 — — — 1,151,194 Other operating revenues — 84,811 — — — 84,811 Total operating revenues $ — $ 5,496,024 $ — $ — $ — $ 5,496,024 Operating Expenses Petroleum product cost of goods sold — 4,026,065 — — — 4,026,065 Merchandise cost of goods sold — 972,603 — — — 972,603 Station and other operating expenses — 241,919 — — — 241,919 Depreciation and amortization — 47,171 — — — 47,171 Selling, general and administrative — 63,822 1 — — 63,823 Accretion of asset retirement obligations — 825 — — — 825 Total operating expenses — 5,352,405 1 — — 5,352,406 Gain (loss) on sale of assets $ — $ 88,975 $ — $ — $ — $ 88,975 Income from operations $ — $ 232,594 $ (1 ) $ — $ — $ 232,593 Other income (expense) Interest income — 330 — — — 330 Interest expense — (19,598 ) — — — (19,598 ) Other nonoperating income — 118 — — — 118 Total other income (expense) $ — $ (19,150 ) $ — $ — $ — $ (19,150 ) Income before income taxes — 213,444 (1 ) — — 213,443 Income tax expense (benefit) — 81,259 — — — 81,259 Income — 132,185 (1 ) — — 132,184 Equity earnings in affiliates, net of tax 132,184 (1 ) — — (132,183 ) — Net Income (Loss) $ 132,184 $ 132,184 $ (1 ) $ — $ (132,183 ) $ 132,184 CONSOLIDATING STATEMENT OF CASH FLOW (unaudited) (Thousands of dollars) Six Months Ended June 30, 2017 Operating Activities Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Net income (loss) $ 52,537 $ 52,537 $ (6 ) $ — $ (52,531 ) $ 52,537 Adjustments to reconcile net income (loss) to net cash provided by (required by) operating activities Depreciation and amortization — 54,519 6 — — 54,525 Deferred and noncurrent income tax charges (credits) — 13,014 — — — 13,014 Accretion of asset retirement obligations — 888 — — — 888 (Gain) loss on sale of assets — 3,368 — — — 3,368 Net increase in noncash operating working capital — (84,715 ) (3 ) — — (84,718 ) Equity in earnings of affiliates (52,537 ) 6 — — 52,531 — Other operating activities - net — 828 — — — 828 Net cash provided by (required by) operating activities — 40,445 (3 ) — — 40,442 Investing Activities Property additions — (133,346 ) (804 ) — — (134,150 ) Proceeds from sale of assets — 715 — — — 715 Changes in restricted cash — — — — — — Other investing activities - net — (4,143 ) — — — (4,143 ) Net cash required by investing activities — (136,774 ) (804 ) — — (137,578 ) Financing Activities Purchase of treasury stock (66,337 ) — — — — (66,337 ) Borrowings of debt — 338,750 — — — 338,750 Repayments of debt — (125,901 ) — — — (125,901 ) Debt issuance costs — (935 ) — — — (935 ) Amounts related to share-based compensation — (5,159 ) — — — (5,159 ) Net distributions to parent 66,337 (67,149 ) 812 — — — Net cash provided by financing activities — 139,606 812 — — 140,418 Net increase in cash and cash equivalents — 43,277 5 — — 43,282 Cash and cash equivalents at January 1 — 153,813 — — — 153,813 Cash and cash equivalents at June 30 $ — $ 197,090 $ 5 $ — $ — $ 197,095 CONSOLIDATING STATEMENT OF CASH FLOW (unaudited) (Thousands of dollars) Six Months Ended June 30, 2016 Operating Activities Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Net income (loss) $ 132,184 $ 132,184 $ (1 ) $ — $ (132,183 ) $ 132,184 Adjustments to reconcile net income (loss) to net cash provided by (required by)operating activities Depreciation and amortization — 47,171 — — — 47,171 Deferred and noncurrent income tax charges (credits) — 14,605 — — — 14,605 Accretion of asset retirement obligations — 825 — — — 825 Pretax (gains) losses from sale of assets — (88,975 ) — — — (88,975 ) Net decrease in noncash operating working capital — 57,427 — — — 57,427 Equity in earnings of affiliates (132,184 ) 1 — — 132,183 — Other operating activities - net — 5,365 — — — 5,365 Net cash provided by (required by) operating activities — 168,603 (1 ) — — 168,602 Investing Activities Property additions — (116,569 ) — — — (116,569 ) Proceeds from sale of assets — 86,298 — — — 86,298 Changes in restricted cash — 13,429 — — — 13,429 Other investing activities - net — (15,138 ) — — — (15,138 ) Net cash required by investing activities — (31,980 ) — — — (31,980 ) Financing Activities Purchase of treasury stock (167,105 ) — — — — (167,105 ) Borrowings of debt — 200,000 — — — 200,000 Repayments of debt — (10,165 ) — — — (10,165 ) Debt issuance costs — (3,240 ) — — — (3,240 ) Amounts related to share-based compensation — (4,237 ) — — — (4,237 ) Net distributions to parent 167,105 (167,106 ) 1 — — — Net cash provided by financing activities — 15,252 1 — — 15,253 Net increase in cash and cash equivalents — 151,875 — — — 151,875 Cash and cash equivalents at January 1 — 102,335 — — — 102,335 Cash and cash equivalents at June 30 $ — $ 254,210 $ — $ — $ — $ 254,210 CONSOLIDATING STATEMENT OF CHANGES IN EQUITY (unaudited) (Thousands of dollars) Six Months Ended June 30, 2017 Statement of Stockholders' Equity Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Common Stock Balance as of December 31, 2016 $ 468 $ 1 $ 60 $ — $ (61 ) $ 468 Issuance of common stock — — — — — — Balance as of June 30, 2017 $ 468 $ 1 $ 60 $ — $ (61 ) $ 468 Treasury Stock Balance as of December 31, 2016 $ (608,001 ) $ — $ — $ — $ — $ (608,001 ) Issuance of common stock 6,816 — — — — 6,816 Repurchase of common stock (66,337 ) — — — — (66,337 ) Balance as of June 30, 2017 $ (667,522 ) $ — $ — $ — $ — $ (667,522 ) APIC Balance as of December 31, 2016 $ 1,213,056 $ 571,117 $ 52,004 $ 87,543 $ (1,368,382 ) $ 555,338 Issuance of common stock (6,816 ) — — — — (6,816 ) Amounts related to share-based compensation — (5,159 ) — — — (5,159 ) Share-based compensation expense — 2,524 — — — 2,524 Balance as of June 30, 2017 $ 1,206,240 $ 568,482 $ 52,004 $ 87,543 $ (1,368,382 ) $ 545,887 Retained Earnings Balance as of December 31, 2016 $ 749,271 $ 687,792 $ (3 ) $ 66,795 $ (754,584 ) $ 749,271 Net income (loss) 52,537 52,537 (6 ) — (52,531 ) 52,537 Balance as of June 30, 2017 $ 801,808 $ 740,329 $ (9 ) $ 66,795 $ (807,115 ) $ 801,808 CONSOLIDATING STATEMENT OF CHANGES IN EQUITY (unaudited) (Thousands of dollars) Six Months Ended June 30, 2016 Statement of Stockholders' Equity Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Common Stock Balance as of December 31, 2015 $ 468 $ 1 $ 60 $ — $ (61 ) $ 468 Issuance of common stock — — — — — — Balance as of June 30, 2016 $ 468 $ 1 $ 60 $ — $ (61 ) $ 468 Treasury Stock Balance as of December 31, 2015 $ (294,139 ) $ — $ — $ — $ — $ (294,139 ) Issuance of common stock 6,748 — — — — 6,748 Repurchase of common stock (167,105 ) — — — — (167,105 ) Balance as of June 30, 2016 $ (454,496 ) $ — $ — $ — $ — $ (454,496 ) APIC Balance as of December 31, 2015 $ 1,222,465 $ 564,554 $ 52,004 $ 87,543 $ (1,368,384 ) $ 558,182 Issuance of common stock (6,748 ) — — — — (6,748 ) Amounts related to share-based compensation — (4,237 ) — — — (4,237 ) Share-based compensation expense — 4,780 — — — 4,780 Balance as of June 30, 2016 $ 1,215,717 $ 565,097 $ 52,004 $ 87,543 $ (1,368,384 ) $ 551,977 Retained Earnings Balance as of December 31, 2015 $ 527,779 $ 466,300 $ (2 ) $ 66,795 $ (533,093 ) $ 527,779 Net income (loss) 132,184 132,184 (1 ) — (132,183 ) 132,184 Balance as of June 30, 2016 $ 659,963 $ 598,484 $ (3 ) $ 66,795 $ (665,276 ) $ 659,963

Description of Business and B20

Description of Business and Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation — Murphy USA was incorporated in March 2013 and, in connection with its incorporation, Murphy USA issued 100 shares of common stock, par value $0.01 per share, to Murphy Oil Corporation (“Murphy Oil”) for $1.00 . On August 30, 2013, Murphy USA was separated from Murphy Oil through the distribution of 100% of the common stock of Murphy USA to holders of Murphy Oil stock. In preparing the financial statements of Murphy USA in conformity with accounting principles generally accepted in the United States, management has made a number of estimates and assumptions related to the reporting of assets, liabilities, revenues, expenses and the disclosure of contingent assets and liabilities. Actual results may differ from these estimates.
Recently Issued Accounting Standards	Recently Issued Accounting Standards — In May 2014, the FASB issued ASU No. 2014-09 "Revenue from Contracts with Customers," which supersedes the revenue recognition requirements in the Accounting Standards Codification ("Codification") Topic 605, Revenue Recognition, and industry-specific guidance throughout the Industry Topics of the Codification. The core principle of the new ASU No. 2014-09 is for companies to recognize revenue from the transfer of goods or services to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods or services. The Company will adopt ASU No. 2014-09 beginning January 1, 2018 using the modified retrospective approach applied to those contracts that were not completed at that date. Prior periods will not be retrospectively adjusted. The Company has substantially completed its analysis to identify all revenue streams, and is currently determining the impact the ASU will have on its various revenue streams and consolidated financial statements. The Company anticipates completing its analysis during the second half of 2017 and we continue to evaluate the impact to our consolidated financial statements and disclosures. The Company is in the process of updating our existing controls and processes to comply with the guidance. The Company currently presents excise tax and other similar taxes collected on sales of refined products and remitted to governmental agencies on a gross basis, in both revenues and cost of petroleum products sold in the income statement. ASU 2014-09 requires the Company to either analyze each tax on a jurisdiction-by-jurisdiction basis to determine if it is the principal in the transaction and continue to present the tax on a gross basis or elect to report all taxes on a net basis. The Company expects to elect to assess all excise and other similar taxes on a jurisdiction-by-jurisdiction basis resulting in certain taxes to be presented on a net basis upon adoption of ASU 2014-09, thus reducing revenue in the income statement with no impact to net income or cash flows. The Company does not expect the impact on reported revenue for the year ended December 31, 2018, or the quarters therein, to be material. In February 2016, the FASB issued ASU No. 2016-02, "Leases (Topic 842)" (“ASU 2016-02”). ASU 2016-02 amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets. Lessor accounting will remain similar to lessor accounting under previous GAAP, while aligning with the FASB’s new revenue recognition guidance. ASU 2016-02 is effective for the Company beginning January 1, 2019. Early adoption of ASU 2016-02 is permitted. The standard requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. While this ASU will have an impact on our internal processes and controls and result in a change to our accounting, we are still in the evaluation and information gathering stage of implementing the guidance and can not yet estimate the potential impact. In March 2016, the FASB issued ASU No. 2016-09, "Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting", which amends the current stock compensation guidance. The amendments simplify the accounting for the taxes related to share-based payments, including adjustments to how excess tax benefits and a company’s payments for tax withholdings should be classified among other changes. The standard was effective for the Company on January 1, 2017. The primary impact of adoption for the first half of 2017 was the recognition of $1.9 million of excess tax benefits in the provision for income taxes rather than paid-in-capital for the current period. Additional amendments to the accounting for income taxes and minimum statutory withholding tax requirements had no impact to retained earnings as of January 1, 2017, where the cumulative effect of these changes is required to be recorded. The Company elected to continue to estimate forfeitures expected to occur to determine the amount of compensation cost to be recognized in each period. The Company elected to apply the presentation requirements for cash flows related to excess tax benefits prospectively as of January 1, 2017. The presentation requirements for cash flows related to employee taxes paid for withheld shares had no impact to any of the periods presented on the consolidated statement of cash flows, as such cash flows have historically been presented as a financing activity.

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2017
Inventory Disclosure [Abstract]
Summary of Inventory	Inventories consisted of the following: (Thousands of dollars) June 30, December 31, Finished products - FIFO basis $ 202,737 $ 207,903 Less LIFO reserve - finished products (128,515 ) (153,319 ) Finished products - LIFO basis 74,222 54,584 Store merchandise for resale 100,214 95,649 Materials and supplies 4,608 3,118 Total inventories $ 179,044 $ 153,351

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Summary of Long-Term Debt	Long-term debt consisted of the following: (Thousands of dollars) June 30, December 31, 6% senior notes due 2023 (net of unamortized discount of $5,392 at June 30, 2017 and $5,826 at December 2 016) $ 494,608 $ 494,174 5.625% senior notes due 2027 (net of unamortized discount of $3,682 at June 30, 2017) 296,318 — Term loan due 2020 (effective rate of 3.78% at June 30, 2017) 97,000 180,000 Capitalized lease obligations, vehicles, due through 2021 1,909 1,451 Less unamortized debt issuance costs (5,791 ) (5,407 ) Total long-term debt 884,044 670,218 Less current maturities 14,958 40,596 Total long-term debt, net of current $ 869,086 $ 629,622

Asset Retirement Obligations 23

Asset Retirement Obligations (ARO) (Tables)	6 Months Ended
	Jun. 30, 2017
Asset Retirement Obligation Disclosure [Abstract]
Reconciliation of Beginning and Ending Aggregate Carrying Amount of Asset Retirement Obligation	A reconciliation of the beginning and ending aggregate carrying amount of the ARO is shown in the following table. (Thousands of dollars) June 30, December 31, Balance at beginning of period $ 26,200 $ 24,345 Accretion expense 888 1,650 Liabilities incurred 167 379 Settlement of liabilities $ (277 ) $ (174 ) Balance at end of period $ 26,978 $ 26,200

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Summary of Effective Income Tax Rates	For the three and six month periods ended June 30, 2017 and 2016 , the Company’s effective tax rates were as follows: 2017 2016 Three months ended June 30, 38.2% 37.5% Six months ended June 30, 34.4% 38.1%

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Reconciliation of Basic and Diluted Earnings Per Share Computations	The following table provides a reconciliation of basic and diluted earnings per share computations for the three and six months ended June 30, 2017 and 2016 (in thousands, except per share amounts): Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Earnings per common share: Net income per share - basic Net income attributable to common stockholders $ 55,563 $ 46,310 $ 52,537 $ 132,184 Weighted average common shares outstanding (in thousands) 36,525 39,360 36,700 40,134 Earnings per common share $ 1.52 $ 1.18 $ 1.43 $ 3.29 Earnings per common share - assuming dilution: Net income (loss) per share - diluted Net income (loss) attributable to common stockholders $ 55,563 $ 46,310 $ 52,537 $ 132,184 Weighted average common shares outstanding (in thousands) 36,525 39,360 36,700 40,134 Common equivalent shares: Dilutive options 336 360 318 371 Weighted average common shares outstanding - assuming dilution (in thousands) 36,861 39,720 37,018 40,505 Earnings per common share assuming dilution $ 1.51 $ 1.17 $ 1.42 $ 3.26

Other Financial Information (Ta

Other Financial Information (Tables)	6 Months Ended
	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Renewable Identification Numbers (RINS) and Other Revenue	Other operating revenues in the Consolidated Statements of Income include the following items: Three Months Ended June 30, Six Months Ended June 30, (Thousands of dollars) 2017 2016 2017 2016 Renewable Identification Numbers (RINs) sales $ 36,618 $ 43,868 $ 65,646 $ 82,643 Other 1,025 702 3,571 2,168 Other operating revenues $ 37,643 $ 44,570 $ 69,217 $ 84,811
Summary of Changes in Operating Working Capital	Six Months Ended June 30, (Thousands of dollars) 2017 2016 Accounts receivable $ 19,192 $ (11,921 ) Inventories (25,712 ) 3,412 Prepaid expenses and other current assets (362 ) 23,978 Accounts payable and accrued liabilities (77,242 ) 17,955 Income taxes payable (594 ) 24,003 Net decrease (increase) in noncash operating working capital $ (84,718 ) $ 57,427

Assets and Liabilities Measur27

Assets and Liabilities Measured at Fair Value (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Schedule of Carrying Amounts and Estimated Fair Value of Financial Instruments	The following table presents the carrying amounts and estimated fair values of financial instruments held by the Company at June 30, 2017 and December 31, 2016 . The fair value of a financial instrument is the amount at which the instrument could be exchanged in a current transaction between willing parties. The table excludes Cash and cash equivalents, Accounts receivable-trade, Trade accounts payable and accrued liabilities, all of which had fair values approximating carrying amounts. The fair value of Current and Long-term debt was estimated based on rates offered to the Company at that time for debt of the same maturities. The Company has off-balance sheet exposures relating to certain financial guarantees and letters of credit. The fair value of these, which represents fees associated with obtaining the instruments, was nominal. At June 30, 2017 At December 31, 2016 Carrying Carrying (Thousands of dollars) Amount Fair Value Amount Fair Value Financial liabilities Current and long-term debt $ (884,044 ) $ (916,128 ) $ (670,218 ) $ (690,114 )

Business Segment (Tables)

Business Segment (Tables)	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Summary of Information by Business Segment	Three Months Ended June 30, 2017 June 30, 2016 Total Assets at External Income External Income (Thousands of dollars) June 30, Revenues (Loss) Revenues (Loss) Marketing 1,914,740 $ 3,211,038 $ 63,714 $ 3,005,750 $ 53,442 Corporate and other assets 308,446 22 (8,151 ) 12 (7,132 ) Total 2,223,186 $ 3,211,060 $ 55,563 $ 3,005,762 $ 46,310 Six Months Ended June 30, 2017 June 30, 2016 External Income External Income (Thousands of dollars) Revenues (Loss) Revenues (Loss) Marketing 6,210,444 64,314 $ 5,495,808 $ 145,867 Corporate and other assets 234 (11,777 ) 216 (13,683 ) Total $ 6,210,678 $ 52,537 $ 5,496,024 $ 132,184

Guarantor Subsidiaries (Tables)

Guarantor Subsidiaries (Tables)	6 Months Ended
	Jun. 30, 2017
Guarantor Subsidiaries [Abstract]
Consolidating Balance Sheet	The following consolidating schedules present financial information on a consolidated basis in conformity with the SEC’s Regulation S-X Rule 3-10(d): CONSOLIDATING BALANCE SHEET (unaudited) (Thousands of dollars) June 30, 2017 Assets Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Current assets Cash and cash equivalents — 197,090 5 — — 197,095 Accounts receivable—trade, less allowance for doubtful accounts of $1,921 in 2017 — 164,372 — — — 164,372 Inventories, at lower of cost or market — 179,044 — — — 179,044 Prepaid expenses and other current assets — 25,230 3 — — 25,233 Total current assets — 565,736 8 — — 565,744 Property, plant and equipment, at cost less accumulated depreciation and amortization of $818,409 in 2017 — 1,612,436 798 — — 1,613,234 Investments in subsidiaries 2,030,647 144,911 — — (2,175,558 ) — Other assets — 44,208 — — — 44,208 Total assets 2,030,647 2,367,291 806 — (2,175,558 ) 2,223,186 Liabilities and Stockholders' Equity Current liabilities Current maturities of long-term debt — 14,958 — — — 14,958 Inter-company accounts payable 689,653 (484,066 ) (51,249 ) (154,338 ) — — Trade accounts payable and accrued liabilities — 394,303 — — — 394,303 Total current liabilities 689,653 (74,805 ) (51,249 ) (154,338 ) — 409,261 Long-term debt, including capitalized lease obligations — 869,086 — — — 869,086 Deferred income taxes — 217,670 — — 217,670 Asset retirement obligations — 26,978 — — — 26,978 Deferred credits and other liabilities — 19,550 — — — 19,550 Total liabilities 689,653 1,058,479 (51,249 ) (154,338 ) — 1,542,545 Stockholders' Equity Preferred Stock, par $0.01 (authorized 20,000,000 shares, none outstanding) — — — — — — Common Stock, par $0.01 (authorized 200,000,000 shares, 46,767,164 shares issued at June 30, 2017) 468 1 60 — (61 ) 468 Treasury Stock (10,715,229 shares held at June 30, 2017 ) (667,522 ) — — — — (667,522 ) Additional paid in capital (APIC) 1,206,240 568,482 52,004 87,543 (1,368,382 ) 545,887 Retained earnings 801,808 740,329 (9 ) 66,795 (807,115 ) 801,808 Total stockholders' equity 1,340,994 1,308,812 52,055 154,338 (2,175,558 ) 680,641 Total liabilities and stockholders' equity 2,030,647 2,367,291 806 — (2,175,558 ) 2,223,186 CONSOLIDATING BALANCE SHEET (Thousands of dollars) December 31, 2016 Assets Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Current assets Cash and cash equivalents $ — $ 153,813 $ — $ — $ — $ 153,813 Accounts receivable—trade, less allowance for doubtful accounts of $1,891 in 2016 — 183,519 — — — 183,519 Inventories, at lower of cost or market — 153,351 — — — 153,351 Prepaid expenses and other current assets — 24,871 — — — 24,871 Total current assets — 515,554 — — — 515,554 Property, plant and equipment, at cost less accumulated depreciation and amortization of $780,426 in 2016 — 1,532,655 — — — 1,532,655 Investments in subsidiaries 1,978,110 144,917 — — (2,123,027 ) — Other assets — 40,531 — — — 40,531 Total assets $ 1,978,110 $ 2,233,657 $ — $ — $ (2,123,027 ) $ 2,088,740 Liabilities and Stockholders' Equity Current liabilities Current maturities of long-term debt $ — $ 40,596 $ — $ — $ — $ 40,596 Inter-company accounts payable 623,316 (416,914 ) (52,064 ) (154,338 ) — — Trade accounts payable and accrued liabilities — 473,370 — — — 473,370 Income taxes payable — 591 3 — — 594 Total current liabilities 623,316 97,643 (52,061 ) (154,338 ) — 514,560 Long-term debt, including capitalized lease obligations — 629,622 — — — 629,622 Deferred income taxes — 204,656 — — — 204,656 Asset retirement obligations — 26,200 — — — 26,200 Deferred credits and other liabilities — 16,626 — — — 16,626 Total liabilities 623,316 974,747 (52,061 ) (154,338 ) — 1,391,664 Stockholders' Equity Preferred Stock, par $0.01 (authorized 20,000,000 shares, none outstanding) — — — — — — Common Stock, par $0.01 (authorized 200,000,000 shares, 46,767,164 shares issued at December 31, 2016) 468 1 60 — (61 ) 468 Treasury Stock (9,831,196 shares held at December 31, 2016) (608,001 ) — — — — (608,001 ) Additional paid in capital (APIC) 1,213,056 571,117 52,004 87,543 (1,368,382 ) 555,338 Retained earnings 749,271 687,792 (3 ) 66,795 (754,584 ) 749,271 Total stockholders' equity 1,354,794 1,258,910 52,061 154,338 (2,123,027 ) 697,076 Total liabilities and stockholders' equity $ 1,978,110 $ 2,233,657 $ — $ — $ (2,123,027 ) $ 2,088,740
Consolidating Income Statement	CONSOLIDATING INCOME STATEMENT (unaudited) (Thousands of dollars) Three Months Ended June 30, 2017 Operating Revenues Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Petroleum product sales — 2,567,719 — — — 2,567,719 Merchandise sales — 605,698 — — — 605,698 Other operating revenues — 37,641 2 — — 37,643 Total operating revenues — 3,211,058 2 — — 3,211,060 Operating Expenses Petroleum product cost of goods sold — 2,413,175 — — — 2,413,175 Merchandise cost of goods sold — 507,979 — — — 507,979 Station and other operating expenses — 129,432 1 — — 129,433 Depreciation and amortization — 27,507 6 — — 27,513 Selling, general and administrative — 31,347 — — — 31,347 Accretion of asset retirement obligations — 446 — — — 446 Total operating expenses — 3,109,886 7 — — 3,109,893 Gain (loss) on sale of assets — 130 — — — 130 Income (loss) from operations — 101,302 (5 ) — — 101,297 Other income (expense) Interest income — 318 — — — 318 Interest expense — (11,644 ) — — — (11,644 ) Other nonoperating income — 3 — — — 3 Total other income (expense) — (11,323 ) — — — (11,323 ) Income (loss) before income taxes — 89,979 (5 ) — — 89,974 Income tax expense — 34,411 — — — 34,411 Income (loss) — 55,568 (5 ) — — 55,563 Equity earnings in affiliates, net of tax (55,563 ) — — — 55,563 — Net Income (Loss) (55,563 ) 55,568 (5 ) — 55,563 55,563 CONSOLIDATING INCOME STATEMENT (unaudited) (Thousands of dollars) Three Months Ended June 30, 2016 Operating Revenues Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Petroleum product sales $ — $ 2,371,735 $ — $ — $ — $ 2,371,735 Merchandise sales — 589,457 — — — 589,457 Other operating revenues — 44,570 — — — 44,570 Total operating revenues $ — $ 3,005,762 $ — $ — $ — $ 3,005,762 Operating Expenses Petroleum product cost of goods sold — 2,242,936 — — — 2,242,936 Merchandise cost of goods sold — 496,801 — — — 496,801 Station and other operating expenses — 125,145 — — — 125,145 Depreciation and amortization — 23,685 — — — 23,685 Selling, general and administrative — 32,320 — — — 32,320 Accretion of asset retirement obligations — 412 — — — 412 Total operating expenses — 2,921,299 — — — 2,921,299 Gain (loss) on sale of assets $ — $ (490 ) $ — $ — $ — $ (490 ) Income from operations $ — $ 83,973 $ — $ — $ — $ 83,973 Other income (expense) Interest income — 250 — — — 250 Interest expense — (10,210 ) — — — (10,210 ) Other nonoperating income — 85 — — — 85 Total other income (expense) $ — $ (9,875 ) $ — $ — $ — $ (9,875 ) Income before income taxes — 74,098 — — — 74,098 Income tax expense — 27,788 — — — 27,788 Income — 46,310 — — — 46,310 Equity earnings in affiliates, net of tax 46,310 — — — (46,310 ) — Net Income (Loss) $ 46,310 $ 46,310 $ — $ — $ (46,310 ) $ 46,310 CONSOLIDATING INCOME STATEMENT (unaudited) (Thousands of dollars) Six Months Ended June 30, 2017 Operating Revenues Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Petroleum product sales — 4,969,973 — — — 4,969,973 Merchandise sales — 1,171,488 — — — 1,171,488 Other operating revenues — 69,215 2 — — 69,217 Total operating revenues — 6,210,676 2 — — 6,210,678 Operating Expenses Petroleum product cost of goods sold — 4,742,508 — — — 4,742,508 Merchandise cost of goods sold — 984,940 — — — 984,940 Station and other operating expenses — 254,176 1 — — 254,177 Depreciation and amortization — 54,519 6 — — 54,525 Selling, general and administrative — 69,592 1 — — 69,593 Accretion of asset retirement obligations — 888 — — — 888 Total operating expenses — 6,106,623 8 — — 6,106,631 Gain (loss) on sale of assets — (3,368 ) — — — (3,368 ) Income (loss) from operations — 100,685 (6 ) — — 100,679 Other income (expense) Interest income — 365 — — — 365 Interest expense — (21,142 ) — — — (21,142 ) Other nonoperating income — 235 — — — 235 Total other income (expense) — (20,542 ) — — — (20,542 ) Income (loss) before income taxes — 80,143 (6 ) — — 80,137 Income tax expense — 27,600 — — — 27,600 Income (loss) — 52,543 (6 ) — — 52,537 Equity earnings in affiliates, net of tax 52,537 (6 ) — — (52,531 ) — Net Income (Loss) 52,537 52,537 (6 ) — (52,531 ) 52,537 CONSOLIDATING INCOME STATEMENT (unaudited) (Thousands of dollars) Six Months Ended June 30, 2016 Operating Revenues Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Petroleum product sales $ — $ 4,260,019 $ — $ — $ — $ 4,260,019 Merchandise sales — 1,151,194 — — — 1,151,194 Other operating revenues — 84,811 — — — 84,811 Total operating revenues $ — $ 5,496,024 $ — $ — $ — $ 5,496,024 Operating Expenses Petroleum product cost of goods sold — 4,026,065 — — — 4,026,065 Merchandise cost of goods sold — 972,603 — — — 972,603 Station and other operating expenses — 241,919 — — — 241,919 Depreciation and amortization — 47,171 — — — 47,171 Selling, general and administrative — 63,822 1 — — 63,823 Accretion of asset retirement obligations — 825 — — — 825 Total operating expenses — 5,352,405 1 — — 5,352,406 Gain (loss) on sale of assets $ — $ 88,975 $ — $ — $ — $ 88,975 Income from operations $ — $ 232,594 $ (1 ) $ — $ — $ 232,593 Other income (expense) Interest income — 330 — — — 330 Interest expense — (19,598 ) — — — (19,598 ) Other nonoperating income — 118 — — — 118 Total other income (expense) $ — $ (19,150 ) $ — $ — $ — $ (19,150 ) Income before income taxes — 213,444 (1 ) — — 213,443 Income tax expense (benefit) — 81,259 — — — 81,259 Income — 132,185 (1 ) — — 132,184 Equity earnings in affiliates, net of tax 132,184 (1 ) — — (132,183 ) — Net Income (Loss) $ 132,184 $ 132,184 $ (1 ) $ — $ (132,183 ) $ 132,184
Consolidating Statement of Cash Flow	CONSOLIDATING STATEMENT OF CASH FLOW (unaudited) (Thousands of dollars) Six Months Ended June 30, 2017 Operating Activities Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Net income (loss) $ 52,537 $ 52,537 $ (6 ) $ — $ (52,531 ) $ 52,537 Adjustments to reconcile net income (loss) to net cash provided by (required by) operating activities Depreciation and amortization — 54,519 6 — — 54,525 Deferred and noncurrent income tax charges (credits) — 13,014 — — — 13,014 Accretion of asset retirement obligations — 888 — — — 888 (Gain) loss on sale of assets — 3,368 — — — 3,368 Net increase in noncash operating working capital — (84,715 ) (3 ) — — (84,718 ) Equity in earnings of affiliates (52,537 ) 6 — — 52,531 — Other operating activities - net — 828 — — — 828 Net cash provided by (required by) operating activities — 40,445 (3 ) — — 40,442 Investing Activities Property additions — (133,346 ) (804 ) — — (134,150 ) Proceeds from sale of assets — 715 — — — 715 Changes in restricted cash — — — — — — Other investing activities - net — (4,143 ) — — — (4,143 ) Net cash required by investing activities — (136,774 ) (804 ) — — (137,578 ) Financing Activities Purchase of treasury stock (66,337 ) — — — — (66,337 ) Borrowings of debt — 338,750 — — — 338,750 Repayments of debt — (125,901 ) — — — (125,901 ) Debt issuance costs — (935 ) — — — (935 ) Amounts related to share-based compensation — (5,159 ) — — — (5,159 ) Net distributions to parent 66,337 (67,149 ) 812 — — — Net cash provided by financing activities — 139,606 812 — — 140,418 Net increase in cash and cash equivalents — 43,277 5 — — 43,282 Cash and cash equivalents at January 1 — 153,813 — — — 153,813 Cash and cash equivalents at June 30 $ — $ 197,090 $ 5 $ — $ — $ 197,095 CONSOLIDATING STATEMENT OF CASH FLOW (unaudited) (Thousands of dollars) Six Months Ended June 30, 2016 Operating Activities Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Net income (loss) $ 132,184 $ 132,184 $ (1 ) $ — $ (132,183 ) $ 132,184 Adjustments to reconcile net income (loss) to net cash provided by (required by)operating activities Depreciation and amortization — 47,171 — — — 47,171 Deferred and noncurrent income tax charges (credits) — 14,605 — — — 14,605 Accretion of asset retirement obligations — 825 — — — 825 Pretax (gains) losses from sale of assets — (88,975 ) — — — (88,975 ) Net decrease in noncash operating working capital — 57,427 — — — 57,427 Equity in earnings of affiliates (132,184 ) 1 — — 132,183 — Other operating activities - net — 5,365 — — — 5,365 Net cash provided by (required by) operating activities — 168,603 (1 ) — — 168,602 Investing Activities Property additions — (116,569 ) — — — (116,569 ) Proceeds from sale of assets — 86,298 — — — 86,298 Changes in restricted cash — 13,429 — — — 13,429 Other investing activities - net — (15,138 ) — — — (15,138 ) Net cash required by investing activities — (31,980 ) — — — (31,980 ) Financing Activities Purchase of treasury stock (167,105 ) — — — — (167,105 ) Borrowings of debt — 200,000 — — — 200,000 Repayments of debt — (10,165 ) — — — (10,165 ) Debt issuance costs — (3,240 ) — — — (3,240 ) Amounts related to share-based compensation — (4,237 ) — — — (4,237 ) Net distributions to parent 167,105 (167,106 ) 1 — — — Net cash provided by financing activities — 15,252 1 — — 15,253 Net increase in cash and cash equivalents — 151,875 — — — 151,875 Cash and cash equivalents at January 1 — 102,335 — — — 102,335 Cash and cash equivalents at June 30 $ — $ 254,210 $ — $ — $ — $ 254,210
Consolidating Statement of Changes in Equity	CONSOLIDATING STATEMENT OF CHANGES IN EQUITY (unaudited) (Thousands of dollars) Six Months Ended June 30, 2017 Statement of Stockholders' Equity Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Common Stock Balance as of December 31, 2016 $ 468 $ 1 $ 60 $ — $ (61 ) $ 468 Issuance of common stock — — — — — — Balance as of June 30, 2017 $ 468 $ 1 $ 60 $ — $ (61 ) $ 468 Treasury Stock Balance as of December 31, 2016 $ (608,001 ) $ — $ — $ — $ — $ (608,001 ) Issuance of common stock 6,816 — — — — 6,816 Repurchase of common stock (66,337 ) — — — — (66,337 ) Balance as of June 30, 2017 $ (667,522 ) $ — $ — $ — $ — $ (667,522 ) APIC Balance as of December 31, 2016 $ 1,213,056 $ 571,117 $ 52,004 $ 87,543 $ (1,368,382 ) $ 555,338 Issuance of common stock (6,816 ) — — — — (6,816 ) Amounts related to share-based compensation — (5,159 ) — — — (5,159 ) Share-based compensation expense — 2,524 — — — 2,524 Balance as of June 30, 2017 $ 1,206,240 $ 568,482 $ 52,004 $ 87,543 $ (1,368,382 ) $ 545,887 Retained Earnings Balance as of December 31, 2016 $ 749,271 $ 687,792 $ (3 ) $ 66,795 $ (754,584 ) $ 749,271 Net income (loss) 52,537 52,537 (6 ) — (52,531 ) 52,537 Balance as of June 30, 2017 $ 801,808 $ 740,329 $ (9 ) $ 66,795 $ (807,115 ) $ 801,808 CONSOLIDATING STATEMENT OF CHANGES IN EQUITY (unaudited) (Thousands of dollars) Six Months Ended June 30, 2016 Statement of Stockholders' Equity Parent Company Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Common Stock Balance as of December 31, 2015 $ 468 $ 1 $ 60 $ — $ (61 ) $ 468 Issuance of common stock — — — — — — Balance as of June 30, 2016 $ 468 $ 1 $ 60 $ — $ (61 ) $ 468 Treasury Stock Balance as of December 31, 2015 $ (294,139 ) $ — $ — $ — $ — $ (294,139 ) Issuance of common stock 6,748 — — — — 6,748 Repurchase of common stock (167,105 ) — — — — (167,105 ) Balance as of June 30, 2016 $ (454,496 ) $ — $ — $ — $ — $ (454,496 ) APIC Balance as of December 31, 2015 $ 1,222,465 $ 564,554 $ 52,004 $ 87,543 $ (1,368,384 ) $ 558,182 Issuance of common stock (6,748 ) — — — — (6,748 ) Amounts related to share-based compensation — (4,237 ) — — — (4,237 ) Share-based compensation expense — 4,780 — — — 4,780 Balance as of June 30, 2016 $ 1,215,717 $ 565,097 $ 52,004 $ 87,543 $ (1,368,384 ) $ 551,977 Retained Earnings Balance as of December 31, 2015 $ 527,779 $ 466,300 $ (2 ) $ 66,795 $ (533,093 ) $ 527,779 Net income (loss) 132,184 132,184 (1 ) — (132,183 ) 132,184 Balance as of June 30, 2016 $ 659,963 $ 598,484 $ (3 ) $ 66,795 $ (665,276 ) $ 659,963

Description of Business and B30

Description of Business and Basis of Presentation (Details)	Aug. 30, 2013	Mar. 31, 2013USD ($)$ / sharesshares	Jun. 30, 2017USD ($)statestation$ / shares	Jun. 30, 2017USD ($)statestation$ / shares	Dec. 31, 2016$ / shares
Product Information [Line Items]
Number of states in which entity operates | state			26	26
Number of stations			1,411	1,411
Common stock shares issued (in shares) | shares		100
Common stock par value (in dollars per share) | $ / shares		$ 0.01	$ 0.01	$ 0.01	$ 0.01
Proceeds from issuance of common stock | $		$ 1
Percentage of shares of stock distributed	100.00%
Total excess tax benefits | $			$ 100,000	$ 1,900,000
Murphy USA [Member]
Product Information [Line Items]
Number of stations			1,154	1,154
Murphy Express [Member]
Product Information [Line Items]
Number of stations			257	257

Inventories (Summary Of Invento

Inventories (Summary Of Inventory) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Finished products - FIFO basis	$ 202,737	$ 207,903
Less LIFO reserve - finished products	(128,515)	(153,319)
Finished products - LIFO basis	74,222	54,584
Store merchandise for resale	100,214	95,649
Materials and supplies	4,608	3,118
Total inventories	$ 179,044	$ 153,351

Long-Term Debt (Summary Of Long

Long-Term Debt (Summary Of Long-Term Debt) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Apr. 25, 2017	Dec. 31, 2016	Aug. 14, 2013
Debt Instrument [Line Items]
Capitalized lease obligations, vehicles, due through 2021	$ 1,909		$ 1,451
Less unamortized debt issuance costs	(5,791)		(5,407)
Total long-term debt	884,044		670,218
Less current maturities	(14,958)		(40,596)
Long-term debt, including capitalized lease obligations	869,086		629,622
Senior Notes | 6% Senior Notes Due 2023
Debt Instrument [Line Items]
Long-term debt, gross	$ 494,608		$ 494,174
Stated interest rate (percent)	6.00%		6.00%	6.00%
Unamortized discount	$ 5,392		$ 5,826
Senior Notes | 5.625% Senior Notes Due 2027
Debt Instrument [Line Items]
Long-term debt, gross	$ 296,318		0
Stated interest rate (percent)	5.625%	5.625%
Unamortized discount	$ 3,682
Secured Debt | Term Loan Due 2020 | Term Facility
Debt Instrument [Line Items]
Long-term debt, gross	$ 97,000		$ 180,000
Effective interest rate (percent)	3.78%

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Details)	Mar. 10, 2016USD ($)	Jun. 30, 2017USD ($)	Apr. 25, 2017USD ($)	Dec. 31, 2016USD ($)	Mar. 31, 2016USD ($)	Aug. 14, 2013USD ($)
Debt Instrument [Line Items]
Fixed charge coverage ratio		0.57
Fixed charge coverage ratio threshold, percentage of aggregate facility commitments and borrowing base		17.50%
Fixed charge coverage ratio threshold, amount of aggregate facility commitments and borrowing base		$ 70,000,000
Secured debt to EBITDA ratio		0.26
Dividend restrictions		The Senior Credit Agreement contains restrictions on certain payments, including dividends, when availability under the credit agreement is less than or equal to the greater of $100 million and 25% of the lesser of the revolving commitments and the borrowing base and our fixed charge coverage ratio is less than 1.0 to 1.0 (unless availability under the credit agreement is greater than $100 million and 40% of the lesser of the revolving commitments and the borrowing base). As of June 30, 2017, our ability to make restricted payments was not limited as our availability under the borrowing base was more than $100 million, while our fixed charge coverage ratio under our Senior Credit Agreement was less than 1.0 to 1.0. As of December 31, 2016, we had a shortfall of approximately $304.1 million of our net income and retained earnings subject to such restrictions before the fixed charge coverage ratio under our Senior Credit Agreement would exceed 1.0 to 1.0.
Net income and retained earnings free of restrictions, excess (deficit) of				$ (304,100,000)
Minimum
Debt Instrument [Line Items]
Fixed charge coverage ratio		1		1
Period for fixed charge coverage ratio threshold (in days)		3 days
Dividend restriction threshold as amount of availability		$ 100,000,000
Dividend restriction threshold as a percentage of revolving commitments and borrowing base		25.00%
Dividend restrictions, fixed charge coverage ratio		1
Maximum
Debt Instrument [Line Items]
Secured debt to EBITDA ratio		4.5
Dividend restriction threshold as amount of availability with consideration of fixed charge coverage ratio		$ 100,000,000
Dividend restriction threshold as a percentage of revolving commitments and borrowing base with consideration of fixed charge coverage ratio		40.00%
Federal Funds Rate
Debt Instrument [Line Items]
Spread over variable rate (percent)		0.50%
LIBOR
Debt Instrument [Line Items]
Spread over variable rate (percent)		1.00%
Interest period one (in months)		1 month
Interest period two (in months)		2 months
Interest period three (in months)		3 months
Interest period four (in months)		6 months
Cash
Debt Instrument [Line Items]
Percentage of asset available to borrow against		100.00%
Credit Card Receivables
Debt Instrument [Line Items]
Percentage of asset available to borrow against		90.00%
Investment Grade Accounts
Debt Instrument [Line Items]
Percentage of asset available to borrow against		90.00%
Other Accounts
Debt Instrument [Line Items]
Percentage of asset available to borrow against		85.00%
Midstream Refined Products Inventory
Debt Instrument [Line Items]
Percentage of asset available to borrow against		80.00%
Refined Retail Products Inventory
Debt Instrument [Line Items]
Percentage of asset available to borrow against		75.00%
Retail Merchandise Inventory
Debt Instrument [Line Items]
Percentage of asset available to borrow against		70.00%
Percentage of net orderly liquidation value available to borrow against		85.00%
Asset-Based Loan Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 450,000,000
Asset-Based Loan Facility | LIBOR | Minimum
Debt Instrument [Line Items]
Spread over variable rate (percent)		1.50%
Asset-Based Loan Facility | LIBOR | Maximum
Debt Instrument [Line Items]
Spread over variable rate (percent)		2.00%
Asset-Based Loan Facility | Alternative Base Rate | Minimum
Debt Instrument [Line Items]
Spread over variable rate (percent)		0.50%
Asset-Based Loan Facility | Alternative Base Rate | Maximum
Debt Instrument [Line Items]
Spread over variable rate (percent)		1.00%
Term Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					200,000,000
Proceeds borrowed from credit facility	$ 200,000,000
Term (in years)	4 years
Quarterly amortization payment (percent)		5.00%
Term Facility | LIBOR | Minimum
Debt Instrument [Line Items]
Spread over variable rate (percent)		2.50%
Term Facility | LIBOR | Maximum
Debt Instrument [Line Items]
Spread over variable rate (percent)		2.75%
Term Facility | Alternative Base Rate | Minimum
Debt Instrument [Line Items]
Spread over variable rate (percent)		1.50%
Term Facility | Alternative Base Rate | Maximum
Debt Instrument [Line Items]
Spread over variable rate (percent)		1.75%
Incremental Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 150,000,000
Letter Of Credit
Debt Instrument [Line Items]
Line of credit facility, sublimit		$ 200,000,000
5.625% Senior Notes Due 2027 | Senior Notes
Debt Instrument [Line Items]
Interest rate (percent)		5.625%	5.625%
Senior notes, principal amount			$ 300,000,000
6% Senior Notes Due 2023 | Senior Notes
Debt Instrument [Line Items]
Interest rate (percent)		6.00%		6.00%		6.00%
Senior notes, principal amount						$ 500,000,000
Asset Based Loan Facility | Maximum
Debt Instrument [Line Items]
Availability under the ABL facility		$ 100,000,000
Asset Based Loan Facility | Asset-Based Loan Facility | Line of Credit [Member]
Debt Instrument [Line Items]
Asset-based loan facility, portion included in current maturities		$ 0

Asset Retirement Obligations 34

Asset Retirement Obligations (ARO) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Asset Retirement Obligation Roll Forward
Balance at beginning of period			$ 26,200	$ 24,345	$ 24,345
Accretion expense	$ 446	$ 412	888	$ 825	1,650
Liabilities incurred			167		379
Settlement of liabilities			(277)		(174)
Balance at end of period	$ 26,978		$ 26,978		$ 26,200

Income Taxes (Summary of Effect

Income Taxes (Summary of Effective Income Tax Rates) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Effective tax rate	38.20%	37.50%	34.40%	38.10%

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2017	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
U.S. Federal statutory rate	35.00%			35.00%
Income Taxes Disclosure [Line Items]
Effective tax rate	38.20%	37.50%		34.40%	38.10%
Income Tax Contingency [Line Items]
Total excess tax benefits	$ 0.1			$ 1.9
Scenario, Forecast [Member]
Income Taxes Disclosure [Line Items]
Effective tax rate			38.00%
Federal
Income Tax Contingency [Line Items]
Earliest year remaining open for audit and/or settlement in major taxing jurisdictions				2,012
State | Minimum
Income Tax Contingency [Line Items]
Earliest year remaining open for audit and/or settlement in major taxing jurisdictions				2,009
State | Maximum
Income Tax Contingency [Line Items]
Earliest year remaining open for audit and/or settlement in major taxing jurisdictions				2,012

Incentive Plans (Details)

Incentive Plans (Details)	Feb. 08, 2017$ / sharesshares	Mar. 31, 2017$ / sharesshares	Jun. 30, 2017USD ($)companyshares	Jun. 30, 2016USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation | $			$ 2,524,000	$ 4,800,000
Total income tax benefits realized from tax deductions related to stock option exercises under share-based payment arrangements | $			$ 200,000	$ 1,400,000
2013 Long-Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for incentive plan (no more than) (in shares)			5,500,000
Number of shares per employee (no more than) (in shares)			1,000,000
2013 Long-Term Incentive Plan | Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum amount payable | $			$ 5,000,000
Restricted stock units issued (in shares)	53,800
2013 Long-Term Incentive Plan | Nonqualified Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	114,800
Shares granted, exercise price (in dollars per share) | $ / shares	$ 65.75
Shares granted, fair value determination method			Black-Scholes
Shares granted, fair value (in dollars per share) | $ / shares	15.45
2013 Long-Term Incentive Plan | Return On Average Capital Employed Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units issued, weighted average grant date fair value (in dollars per share) | $ / shares	65.75
Award vesting period (in years)			3 years
2013 Long-Term Incentive Plan | Total Shareholder Return Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted, fair value determination method			Monte Carlo
Restricted stock units issued, weighted average grant date fair value (in dollars per share) | $ / shares	$ 94.51
Award vesting period (in years)			3 years
Number of companies in total shareholder return peer comparison group | company			16
2013 Long-Term Incentive Plan, RSU Grant One | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units issued (in shares)	29,075
Restricted stock units issued, weighted average grant date fair value (in dollars per share) | $ / shares	$ 65.41
2013 Long-Term Incentive Plan, RSU Grant Two | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units issued (in shares)	50,075
Restricted stock units issued, weighted average grant date fair value (in dollars per share) | $ / shares	$ 65.75
2013 Stock Plan For Non-Employee Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for incentive plan (no more than) (in shares)			500,000
2013 Stock Plan For Non-Employee Directors | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units issued (in shares)		15,948
Restricted stock units issued, weighted average grant date fair value (in dollars per share) | $ / shares		$ 66.01
Award vesting period (in years)		3 years

Financial Instruments and Ris38

Financial Instruments and Risk Management (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Prepaid Expenses and Other Current Assets
Derivative [Line Items]
Cash deposits related to commodity derivative contracts	$ 2.5	$ 1.8

Earnings Per Share (Narrative)

Earnings Per Share (Narrative) (Details) - January 2016 Share Repurchase Program - USD ($)	6 Months Ended
	Jun. 30, 2017	Jan. 25, 2016
Equity, Class of Treasury Stock [Line Items]
Capital expenditure and stock repurchase program, approved amount (up to)		$ 500,000,000
Stock repurchase program, shares acquired (in shares)	994,231
Stock repurchase program, average price per share (in dollars per share)	$ 66.72
Capital expenditure and stock repurchase program, remaining authorized amount	$ 110,400,000

Earnings Per Share (Reconciliat

Earnings Per Share (Reconciliation of Basic and Diluted Earnings Per Share Computations) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings per common share:
Net income	$ 55,563	$ 46,310	$ 52,537	$ 132,184
Weighted average common shares outstanding - basic (in shares)	36,525	39,360	36,700	40,134
Earnings per common share (in dollars per share)	$ 1.52	$ 1.18	$ 1.43	$ 3.29
Earnings per common share - assuming dilution:
Net income	$ 55,563	$ 46,310	$ 52,537	$ 132,184
Dilutive options (in shares)	336	360	318	371
Weighted average common shares outstanding - assuming dilution (in shares)	36,861	39,720	37,018	40,505
Earnings per common share assuming dilution (in dollars per share)	$ 1.51	$ 1.17	$ 1.42	$ 3.26

Other Financial Information (Sc

Other Financial Information (Schedule of Renewable Identification Numbers (RINs) and Other Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Renewable Identification Numbers (RINs) sales	$ 36,618	$ 43,868	$ 65,646	$ 82,643
Other	1,025	702	3,571	2,168
Other operating revenues	$ 37,643	$ 44,570	$ 69,217	$ 84,811

Other Financial Information (Na

Other Financial Information (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash income taxes paid (collected), net of refunds	$ 13.1	$ 15.1
Interest paid, net of amounts capitalized	$ 17.1	$ 18.1

Other Financial Information (Su

Other Financial Information (Summary of Changes in Operating Working Capital) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accounts receivable	$ 19,192	$ (11,921)
Inventories	(25,712)	3,412
Prepaid expenses and other current assets	(362)	23,978
Accounts payable and accrued liabilities	(77,242)	17,955
Income taxes payable	(594)	24,003
Net decrease (increase) in noncash operating working capital	$ (84,718)	$ 57,427

Assets and Liabilities Measur44

Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Current and long-term debt, carrying amount	$ (884,044)	$ (670,218)
Current and long-term debt. fair value	$ (916,128)	$ (690,114)

Contingencies (Details)

Contingencies (Details)	6 Months Ended
	Jun. 30, 2017USD ($)site
Loss Contingencies [Line Items]
Number of Superfund sites for which company may be liable | site	1
Outstanding letters of credit	$ 16,900,000
Estimate of possible loss	0
Workers Compensation Insurance Claims
Loss Contingencies [Line Items]
Insurance deductible amount	1,000,000
General Liability Insurance Claims
Loss Contingencies [Line Items]
Insurance deductible amount	3,000,000
Auto Liability Insurance Claims
Loss Contingencies [Line Items]
Insurance deductible amount	300,000
Insurance Claims
Loss Contingencies [Line Items]
Loss contingency accrual	$ 19,500,000

Business Segment (Narrative) (D

Business Segment (Narrative) (Details)	6 Months Ended
	Jun. 30, 2017segment
Segment Reporting [Abstract]
Number of operating segments	1

Business Segment (Summary of In

Business Segment (Summary of Information by Business Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total Assets	$ 2,223,186		$ 2,223,186		$ 2,088,740
External revenues	3,211,060	$ 3,005,762	6,210,678	$ 5,496,024
Net income	55,563	46,310	52,537	132,184
Operating Segments | Marketing | Continuing Operations
Segment Reporting Information [Line Items]
Total Assets	1,914,740		1,914,740
External revenues	3,211,038	3,005,750	6,210,444	5,495,808
Net income	63,714	53,442	64,314	145,867
Corporate and other assets | Continuing Operations
Segment Reporting Information [Line Items]
Total Assets	308,446		308,446
External revenues	22	12	234	216
Net income	$ (8,151)	$ (7,132)	$ (11,777)	$ (13,683)

Guarantor Subsidiaries - Additi

Guarantor Subsidiaries - Additional Information (Details) - Senior Notes	Jun. 30, 2017	Apr. 25, 2017	Dec. 31, 2016	Aug. 14, 2013
6% Senior Notes Due 2023
Debt Instrument [Line Items]
Interest rate (percent)	6.00%		6.00%	6.00%
5.625% Senior Notes Due 2027
Debt Instrument [Line Items]
Interest rate (percent)	5.625%	5.625%

Guarantor Subsidiaries (Consoli

Guarantor Subsidiaries (Consolidating Balance Sheet) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 197,095	$ 153,813	$ 254,210	$ 102,335
Accounts receivable—trade, less allowance for doubtful accounts of $1,921 in 2017	164,372	183,519
Inventories, at lower of cost or market	179,044	153,351
Prepaid expenses and other current assets	25,233	24,871
Total current assets	565,744	515,554
Property, plant and equipment, at cost less accumulated depreciation and amortization of $818,409 in 2017	1,613,234	1,532,655
Investments in subsidiaries	0	0
Other assets	44,208	40,531
Total assets	2,223,186	2,088,740
Current liabilities
Current maturities of long-term debt	14,958	40,596
Inter-company accounts payable	0	0
Trade accounts payable and accrued liabilities	394,303	473,370
Income taxes payable	0	594
Total current liabilities	409,261	514,560
Long-term debt, including capitalized lease obligations	869,086	629,622
Deferred income taxes	217,670	204,656
Asset retirement obligations	26,978	26,200
Deferred credits and other liabilities	19,550	16,626
Total liabilities	1,542,545	1,391,664
Stockholders' Equity
Preferred Stock, par $0.01, (authorized 20,000,000 shares, none outstanding)	0	0
Common Stock, par $0.01 (authorized 200,000,000 shares, 46,767,164 shares issued at June 30, 2017)	468	468
Treasury Stock (10,715,229 shares held at June 30, 2017)	(667,522)	(608,001)
Additional paid in capital (APIC)	545,887	555,338
Retained earnings	801,808	749,271
Total stockholders' equity	680,641	697,076	757,912	$ 792,290
Total liabilities and stockholders' equity	2,223,186	2,088,740
Eliminations
Current assets
Cash and cash equivalents	0	0	0
Accounts receivable—trade, less allowance for doubtful accounts of $1,921 in 2017	0	0
Inventories, at lower of cost or market	0	0
Prepaid expenses and other current assets	0	0
Total current assets	0	0
Property, plant and equipment, at cost less accumulated depreciation and amortization of $818,409 in 2017	0	0
Investments in subsidiaries	(2,175,558)	(2,123,027)
Other assets	0	0
Total assets	(2,175,558)	(2,123,027)
Current liabilities
Current maturities of long-term debt	0	0
Inter-company accounts payable	0	0
Trade accounts payable and accrued liabilities	0	0
Income taxes payable		0
Total current liabilities	0	0
Long-term debt, including capitalized lease obligations	0	0
Deferred income taxes		0
Asset retirement obligations	0	0
Deferred credits and other liabilities	0	0
Total liabilities	0	0
Stockholders' Equity
Preferred Stock, par $0.01, (authorized 20,000,000 shares, none outstanding)	0	0
Common Stock, par $0.01 (authorized 200,000,000 shares, 46,767,164 shares issued at June 30, 2017)	(61)	(61)
Treasury Stock (10,715,229 shares held at June 30, 2017)	0	0
Additional paid in capital (APIC)	(1,368,382)	(1,368,382)
Retained earnings	(807,115)	(754,584)
Total stockholders' equity	(2,175,558)	(2,123,027)
Total liabilities and stockholders' equity	(2,175,558)	(2,123,027)
Parent Company
Current assets
Cash and cash equivalents	0	0	0
Accounts receivable—trade, less allowance for doubtful accounts of $1,921 in 2017	0	0
Inventories, at lower of cost or market	0	0
Prepaid expenses and other current assets	0	0
Total current assets	0	0
Property, plant and equipment, at cost less accumulated depreciation and amortization of $818,409 in 2017	0	0
Investments in subsidiaries	2,030,647	1,978,110
Other assets	0	0
Total assets	2,030,647	1,978,110
Current liabilities
Current maturities of long-term debt	0	0
Inter-company accounts payable	689,653	623,316
Trade accounts payable and accrued liabilities	0	0
Income taxes payable		0
Total current liabilities	689,653	623,316
Long-term debt, including capitalized lease obligations	0	0
Deferred income taxes	0	0
Asset retirement obligations	0	0
Deferred credits and other liabilities	0	0
Total liabilities	689,653	623,316
Stockholders' Equity
Preferred Stock, par $0.01, (authorized 20,000,000 shares, none outstanding)	0	0
Common Stock, par $0.01 (authorized 200,000,000 shares, 46,767,164 shares issued at June 30, 2017)	468	468
Treasury Stock (10,715,229 shares held at June 30, 2017)	(667,522)	(608,001)
Additional paid in capital (APIC)	1,206,240	1,213,056
Retained earnings	801,808	749,271
Total stockholders' equity	1,340,994	1,354,794
Total liabilities and stockholders' equity	2,030,647	1,978,110
Issuer
Current assets
Cash and cash equivalents	197,090	153,813	254,210
Accounts receivable—trade, less allowance for doubtful accounts of $1,921 in 2017	164,372	183,519
Inventories, at lower of cost or market	179,044	153,351
Prepaid expenses and other current assets	25,230	24,871
Total current assets	565,736	515,554
Property, plant and equipment, at cost less accumulated depreciation and amortization of $818,409 in 2017	1,612,436	1,532,655
Investments in subsidiaries	144,911	144,917
Other assets	44,208	40,531
Total assets	2,367,291	2,233,657
Current liabilities
Current maturities of long-term debt	14,958	40,596
Inter-company accounts payable	(484,066)	(416,914)
Trade accounts payable and accrued liabilities	394,303	473,370
Income taxes payable		591
Total current liabilities	(74,805)	97,643
Long-term debt, including capitalized lease obligations	869,086	629,622
Deferred income taxes	217,670	204,656
Asset retirement obligations	26,978	26,200
Deferred credits and other liabilities	19,550	16,626
Total liabilities	1,058,479	974,747
Stockholders' Equity
Preferred Stock, par $0.01, (authorized 20,000,000 shares, none outstanding)	0	0
Common Stock, par $0.01 (authorized 200,000,000 shares, 46,767,164 shares issued at June 30, 2017)	1	1
Treasury Stock (10,715,229 shares held at June 30, 2017)	0	0
Additional paid in capital (APIC)	568,482	571,117
Retained earnings	740,329	687,792
Total stockholders' equity	1,308,812	1,258,910
Total liabilities and stockholders' equity	2,367,291	2,233,657
Guarantor Subsidiaries
Current assets
Cash and cash equivalents	5	0	0
Accounts receivable—trade, less allowance for doubtful accounts of $1,921 in 2017	0	0
Inventories, at lower of cost or market	0	0
Prepaid expenses and other current assets	3	0
Total current assets	8	0
Property, plant and equipment, at cost less accumulated depreciation and amortization of $818,409 in 2017	798	0
Investments in subsidiaries	0	0
Other assets	0	0
Total assets	806	0
Current liabilities
Current maturities of long-term debt	0	0
Inter-company accounts payable	(51,249)	(52,064)
Trade accounts payable and accrued liabilities	0	0
Income taxes payable		3
Total current liabilities	(51,249)	(52,061)
Long-term debt, including capitalized lease obligations	0	0
Deferred income taxes	0	0
Asset retirement obligations	0	0
Deferred credits and other liabilities	0	0
Total liabilities	(51,249)	(52,061)
Stockholders' Equity
Preferred Stock, par $0.01, (authorized 20,000,000 shares, none outstanding)	0	0
Common Stock, par $0.01 (authorized 200,000,000 shares, 46,767,164 shares issued at June 30, 2017)	60	60
Treasury Stock (10,715,229 shares held at June 30, 2017)	0	0
Additional paid in capital (APIC)	52,004	52,004
Retained earnings	(9)	(3)
Total stockholders' equity	52,055	52,061
Total liabilities and stockholders' equity	806	0
Non-Guarantor Subsidiaries
Current assets
Cash and cash equivalents	0	0	$ 0
Accounts receivable—trade, less allowance for doubtful accounts of $1,921 in 2017	0	0
Inventories, at lower of cost or market	0	0
Prepaid expenses and other current assets	0	0
Total current assets	0	0
Property, plant and equipment, at cost less accumulated depreciation and amortization of $818,409 in 2017	0	0
Investments in subsidiaries	0	0
Other assets	0	0
Total assets	0	0
Current liabilities
Current maturities of long-term debt	0	0
Inter-company accounts payable	(154,338)	(154,338)
Trade accounts payable and accrued liabilities	0	0
Income taxes payable		0
Total current liabilities	(154,338)	(154,338)
Long-term debt, including capitalized lease obligations	0	0
Deferred income taxes	0	0
Asset retirement obligations	0	0
Deferred credits and other liabilities	0	0
Total liabilities	(154,338)	(154,338)
Stockholders' Equity
Preferred Stock, par $0.01, (authorized 20,000,000 shares, none outstanding)	0	0
Common Stock, par $0.01 (authorized 200,000,000 shares, 46,767,164 shares issued at June 30, 2017)	0	0
Treasury Stock (10,715,229 shares held at June 30, 2017)	0	0
Additional paid in capital (APIC)	87,543	87,543
Retained earnings	66,795	66,795
Total stockholders' equity	154,338	154,338
Total liabilities and stockholders' equity	$ 0	$ 0

Guarantor Subsidiaries (Conso50

Guarantor Subsidiaries (Consolidating Balance Sheet 2) (Details) - USD ($) $ / shares in Units, $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Mar. 31, 2013
Guarantor Subsidiaries [Abstract]
Allowance for doubtful accounts	$ 1,921	$ 1,891
Property, plant and equipment, accumulated depreciation and amortization	$ 818,409	$ 780,426
Preferred stock par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock shares authorized (in shares)	20,000,000	20,000,000
Preferred stock shares outstanding (in shares)	0	0
Common stock par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Common stock shares authorized (in shares)	200,000,000	200,000,000
Common stock shares issued (in shares)	46,767,164	46,767,164
Treasury stock, shares held (in shares)	10,715,229	9,831,196

Guarantor Subsidiaries (Conso51

Guarantor Subsidiaries (Consolidating Income Statement) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Operating Revenues
Petroleum product sales	[1]	$ 2,567,719	$ 2,371,735	$ 4,969,973	$ 4,260,019
Merchandise sales		605,698	589,457	1,171,488	1,151,194
Other operating revenues		37,643	44,570	69,217	84,811
Total operating revenues		3,211,060	3,005,762	6,210,678	5,496,024
Operating Expenses
Petroleum product cost of goods sold	[1]	2,413,175	2,242,936	4,742,508	4,026,065
Merchandise cost of goods sold		507,979	496,801	984,940	972,603
Station and other operating expenses		129,433	125,145	254,177	241,919
Depreciation and amortization		27,513	23,685	54,525	47,171
Selling, general and administrative		31,347	32,320	69,593	63,823
Accretion of asset retirement obligations		446	412	888	825	$ 1,650
Total operating expenses		3,109,893	2,921,299	6,106,631	5,352,406
Gain (loss) on sale of assets		130	(490)	(3,368)	88,975
Income (loss) from operations		101,297	83,973	100,679	232,593
Other income (expense)
Interest income		318	250	365	330
Interest expense		(11,644)	(10,210)	(21,142)	(19,598)
Other nonoperating income		3	85	235	118
Total other income (expense)		(11,323)	(9,875)	(20,542)	(19,150)
Income (loss) before income taxes		89,974	74,098	80,137	213,443
Income tax expense		34,411	27,788	27,600	81,259
Income (loss)		55,563	46,310	52,537	132,184
Equity earnings in affiliates, net of tax		0	0	0	0
Net Income (Loss)		55,563	46,310	52,537	132,184
Eliminations
Operating Revenues
Petroleum product sales		0	0	0	0
Merchandise sales		0	0	0	0
Other operating revenues		0	0	0	0
Total operating revenues		0	0	0	0
Operating Expenses
Petroleum product cost of goods sold		0	0	0	0
Merchandise cost of goods sold		0	0	0	0
Station and other operating expenses		0	0	0	0
Depreciation and amortization		0	0	0	0
Selling, general and administrative		0	0	0	0
Accretion of asset retirement obligations		0	0	0	0
Total operating expenses		0	0	0	0
Gain (loss) on sale of assets		0	0	0	0
Income (loss) from operations		0	0	0	0
Other income (expense)
Interest income		0	0	0	0
Interest expense		0	0	0	0
Other nonoperating income		0	0	0	0
Total other income (expense)		0	0	0	0
Income (loss) before income taxes		0	0	0	0
Income tax expense		0	0	0	0
Income (loss)		0	0	0	0
Equity earnings in affiliates, net of tax		55,563	(46,310)	(52,531)	(132,183)
Net Income (Loss)		55,563	(46,310)	(52,531)	(132,183)
Parent Company
Operating Revenues
Petroleum product sales		0	0	0	0
Merchandise sales		0	0	0	0
Other operating revenues		0	0	0	0
Total operating revenues		0	0	0	0
Operating Expenses
Petroleum product cost of goods sold		0	0	0	0
Merchandise cost of goods sold		0	0	0	0
Station and other operating expenses		0	0	0	0
Depreciation and amortization		0	0	0	0
Selling, general and administrative		0	0	0	0
Accretion of asset retirement obligations		0	0	0	0
Total operating expenses		0	0	0	0
Gain (loss) on sale of assets		0	0	0	0
Income (loss) from operations		0	0	0	0
Other income (expense)
Interest income		0	0	0	0
Interest expense		0	0	0	0
Other nonoperating income		0	0	0	0
Total other income (expense)		0	0	0	0
Income (loss) before income taxes		0	0	0	0
Income tax expense		0	0	0	0
Income (loss)		0	0	0	0
Equity earnings in affiliates, net of tax		(55,563)	46,310	52,537	132,184
Net Income (Loss)		(55,563)	46,310	52,537	132,184
Issuer
Operating Revenues
Petroleum product sales		2,567,719	2,371,735	4,969,973	4,260,019
Merchandise sales		605,698	589,457	1,171,488	1,151,194
Other operating revenues		37,641	44,570	69,215	84,811
Total operating revenues		3,211,058	3,005,762	6,210,676	5,496,024
Operating Expenses
Petroleum product cost of goods sold		2,413,175	2,242,936	4,742,508	4,026,065
Merchandise cost of goods sold		507,979	496,801	984,940	972,603
Station and other operating expenses		129,432	125,145	254,176	241,919
Depreciation and amortization		27,507	23,685	54,519	47,171
Selling, general and administrative		31,347	32,320	69,592	63,822
Accretion of asset retirement obligations		446	412	888	825
Total operating expenses		3,109,886	2,921,299	6,106,623	5,352,405
Gain (loss) on sale of assets		130	(490)	(3,368)	88,975
Income (loss) from operations		101,302	83,973	100,685	232,594
Other income (expense)
Interest income		318	250	365	330
Interest expense		(11,644)	(10,210)	(21,142)	(19,598)
Other nonoperating income		3	85	235	118
Total other income (expense)		(11,323)	(9,875)	(20,542)	(19,150)
Income (loss) before income taxes		89,979	74,098	80,143	213,444
Income tax expense		34,411	27,788	27,600	81,259
Income (loss)		55,568	46,310	52,543	132,185
Equity earnings in affiliates, net of tax		0	0	(6)	(1)
Net Income (Loss)		55,568	46,310	52,537	132,184
Guarantor Subsidiaries
Operating Revenues
Petroleum product sales		0	0	0	0
Merchandise sales		0	0	0	0
Other operating revenues		2	0	2	0
Total operating revenues		2	0	2	0
Operating Expenses
Petroleum product cost of goods sold		0	0	0	0
Merchandise cost of goods sold		0	0	0	0
Station and other operating expenses		1	0	1	0
Depreciation and amortization		6	0	6	0
Selling, general and administrative		0	0	1	1
Accretion of asset retirement obligations		0	0	0	0
Total operating expenses		7	0	8	1
Gain (loss) on sale of assets		0	0	0	0
Income (loss) from operations		(5)	0	(6)	(1)
Other income (expense)
Interest income		0	0	0	0
Interest expense		0	0	0	0
Other nonoperating income		0	0	0	0
Total other income (expense)		0	0	0	0
Income (loss) before income taxes		(5)	0	(6)	(1)
Income tax expense		0	0	0	0
Income (loss)		(5)	0	(6)	(1)
Equity earnings in affiliates, net of tax		0	0	0	0
Net Income (Loss)		(5)	0	(6)	(1)
Non-Guarantor Subsidiaries
Operating Revenues
Petroleum product sales		0	0	0	0
Merchandise sales		0	0	0	0
Other operating revenues		0	0	0	0
Total operating revenues		0	0	0	0
Operating Expenses
Petroleum product cost of goods sold		0	0	0	0
Merchandise cost of goods sold		0	0	0	0
Station and other operating expenses		0	0	0	0
Depreciation and amortization		0	0	0	0
Selling, general and administrative		0	0	0	0
Accretion of asset retirement obligations		0	0	0	0
Total operating expenses		0	0	0	0
Gain (loss) on sale of assets		0	0	0	0
Income (loss) from operations		0	0	0	0
Other income (expense)
Interest income		0	0	0	0
Interest expense		0	0	0	0
Other nonoperating income		0	0	0	0
Total other income (expense)		0	0	0	0
Income (loss) before income taxes		0	0	0	0
Income tax expense		0	0	0	0
Income (loss)		0	0	0	0
Equity earnings in affiliates, net of tax		0	0	0	0
Net Income (Loss)		$ 0	$ 0	$ 0	$ 0
[1]	Includes excise taxes of $504,582 and $487,923 for the three months ended June 30, 2017 and 2016, respectively and $984,650 and $960,533 for the six months ended June 30, 2017 and 2016, respectively.

Guarantor Subsidiaries (Conso52

Guarantor Subsidiaries (Consolidating Statement Of Cash Flow) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015
Operating Activities
Net income	$ 55,563	$ 46,310	$ 52,537	$ 132,184
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	27,513	23,685	54,525	47,171
Deferred and noncurrent income tax charges (credits)			13,014	14,605
Accretion of asset retirement obligations	446	412	888	825	$ 1,650
(Gain) loss on sale of assets	(130)	490	3,368	(88,975)
Net (increase) decrease in noncash operating working capital			(84,718)	57,427
Equity in earnings of affiliates	0	0	0	0
Other operating activities - net			828	5,365
Net cash provided by (required by) operating activities			40,442	168,602
Investing Activities
Property additions			(134,150)	(116,569)
Proceeds from sale of assets			715	86,298
Changes in restricted cash			0	13,429
Other investing activities - net			(4,143)	(15,138)
Net cash required by investing activities			(137,578)	(31,980)
Financing Activities
Purchase of treasury stock			(66,337)	(167,105)
Borrowings of debt			338,750	200,000
Repayments of debt			(125,901)	(10,165)
Debt issuance costs			(935)	(3,240)
Amounts related to share-based compensation			(5,159)	(4,237)
Net distributions to parent			0	0
Net cash provided by financing activities			140,418	15,253
Net increase in cash and cash equivalents			43,282	151,875
Cash and cash equivalents at January 1			153,813	102,335	102,335
Cash and cash equivalents at June 30	197,095		197,095		153,813
Cash and cash equivalents	197,095	254,210	197,095	254,210	153,813	$ 102,335
Eliminations
Operating Activities
Net income	55,563	(46,310)	(52,531)	(132,183)
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	0	0	0	0
Deferred and noncurrent income tax charges (credits)			0	0
Accretion of asset retirement obligations	0	0	0	0
(Gain) loss on sale of assets	0	0	0	0
Net (increase) decrease in noncash operating working capital			0	0
Equity in earnings of affiliates	(55,563)	46,310	52,531	132,183
Other operating activities - net			0	0
Net cash provided by (required by) operating activities			0	0
Investing Activities
Property additions			0	0
Proceeds from sale of assets			0	0
Changes in restricted cash			0	0
Other investing activities - net			0	0
Net cash required by investing activities			0	0
Financing Activities
Purchase of treasury stock			0	0
Borrowings of debt			0	0
Repayments of debt			0	0
Debt issuance costs			0	0
Amounts related to share-based compensation			0	0
Net distributions to parent			0	0
Net cash provided by financing activities			0	0
Net increase in cash and cash equivalents			0	0
Cash and cash equivalents at January 1			0	0	0
Cash and cash equivalents at June 30	0		0		0
Cash and cash equivalents	0	0	0	0	0
Parent Company
Operating Activities
Net income	(55,563)	46,310	52,537	132,184
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	0	0	0	0
Deferred and noncurrent income tax charges (credits)			0	0
Accretion of asset retirement obligations	0	0	0	0
(Gain) loss on sale of assets	0	0	0	0
Net (increase) decrease in noncash operating working capital			0	0
Equity in earnings of affiliates	55,563	(46,310)	(52,537)	(132,184)
Other operating activities - net			0	0
Net cash provided by (required by) operating activities			0	0
Investing Activities
Property additions			0	0
Proceeds from sale of assets			0	0
Changes in restricted cash			0	0
Other investing activities - net			0	0
Net cash required by investing activities			0	0
Financing Activities
Purchase of treasury stock			(66,337)	(167,105)
Borrowings of debt			0	0
Repayments of debt			0	0
Debt issuance costs			0	0
Amounts related to share-based compensation			0	0
Net distributions to parent			66,337	167,105
Net cash provided by financing activities			0	0
Net increase in cash and cash equivalents			0	0
Cash and cash equivalents at January 1			0	0	0
Cash and cash equivalents at June 30	0		0		0
Cash and cash equivalents	0	0	0	0	0
Issuer
Operating Activities
Net income	55,568	46,310	52,537	132,184
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	27,507	23,685	54,519	47,171
Deferred and noncurrent income tax charges (credits)			13,014	14,605
Accretion of asset retirement obligations	446	412	888	825
(Gain) loss on sale of assets	(130)	490	3,368	(88,975)
Net (increase) decrease in noncash operating working capital			(84,715)	57,427
Equity in earnings of affiliates	0	0	6	1
Other operating activities - net			828	5,365
Net cash provided by (required by) operating activities			40,445	168,603
Investing Activities
Property additions			(133,346)	(116,569)
Proceeds from sale of assets			715	86,298
Changes in restricted cash			0	13,429
Other investing activities - net			(4,143)	(15,138)
Net cash required by investing activities			(136,774)	(31,980)
Financing Activities
Purchase of treasury stock			0	0
Borrowings of debt			338,750	200,000
Repayments of debt			(125,901)	(10,165)
Debt issuance costs			(935)	(3,240)
Amounts related to share-based compensation			(5,159)	(4,237)
Net distributions to parent			(67,149)	(167,106)
Net cash provided by financing activities			139,606	15,252
Net increase in cash and cash equivalents			43,277	151,875
Cash and cash equivalents at January 1			153,813	102,335	102,335
Cash and cash equivalents at June 30	197,090		197,090		153,813
Cash and cash equivalents	197,090	254,210	197,090	254,210	153,813
Guarantor Subsidiaries
Operating Activities
Net income	(5)	0	(6)	(1)
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	6	0	6	0
Deferred and noncurrent income tax charges (credits)			0	0
Accretion of asset retirement obligations	0	0	0	0
(Gain) loss on sale of assets	0	0	0	0
Net (increase) decrease in noncash operating working capital			(3)	0
Equity in earnings of affiliates	0	0	0	0
Other operating activities - net			0	0
Net cash provided by (required by) operating activities			(3)	(1)
Investing Activities
Property additions			(804)	0
Proceeds from sale of assets			0	0
Changes in restricted cash			0	0
Other investing activities - net			0	0
Net cash required by investing activities			(804)	0
Financing Activities
Purchase of treasury stock			0	0
Borrowings of debt			0	0
Repayments of debt			0	0
Debt issuance costs			0	0
Amounts related to share-based compensation			0	0
Net distributions to parent			812	1
Net cash provided by financing activities			812	1
Net increase in cash and cash equivalents			5	0
Cash and cash equivalents at January 1			0	0	0
Cash and cash equivalents at June 30	5		5		0
Cash and cash equivalents	5	0	5	0	0
Non-Guarantor Subsidiaries
Operating Activities
Net income	0	0	0	0
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	0	0	0	0
Deferred and noncurrent income tax charges (credits)			0	0
Accretion of asset retirement obligations	0	0	0	0
(Gain) loss on sale of assets	0	0	0	0
Net (increase) decrease in noncash operating working capital			0	0
Equity in earnings of affiliates	0	0	0	0
Other operating activities - net			0	0
Net cash provided by (required by) operating activities			0	0
Investing Activities
Property additions			0	0
Proceeds from sale of assets			0	0
Changes in restricted cash			0	0
Other investing activities - net			0	0
Net cash required by investing activities			0	0
Financing Activities
Purchase of treasury stock			0	0
Borrowings of debt			0	0
Repayments of debt			0	0
Debt issuance costs			0	0
Amounts related to share-based compensation			0	0
Net distributions to parent			0	0
Net cash provided by financing activities			0	0
Net increase in cash and cash equivalents			0	0
Cash and cash equivalents at January 1			0	0	0
Cash and cash equivalents at June 30	0		0		0
Cash and cash equivalents	$ 0	$ 0	$ 0	$ 0	$ 0

Guarantor Subsidiaries (Conso53

Guarantor Subsidiaries (Consolidating Statement Of Changes In Equity) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			$ 697,076	$ 792,290
Issuance of common stock			0	0
Repurchase of common stock			(66,337)	(167,105)
Amounts related to share-based compensation			(5,159)	(4,237)
Share-based compensation expense			2,524	4,780
Net income attributable to common stockholders	$ 55,563	$ 46,310	52,537	132,184
Ending balance	680,641	757,912	680,641	757,912
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			468	468
Issuance of common stock			0	0
Ending balance	468	468	468	468
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(608,001)	(294,139)
Issuance of common stock			6,816	6,748
Repurchase of common stock			(66,337)	(167,105)
Ending balance	(667,522)	(454,496)	(667,522)	(454,496)
APIC
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			555,338	558,182
Issuance of common stock			(6,816)	(6,748)
Amounts related to share-based compensation			(5,159)	(4,237)
Share-based compensation expense			2,524	4,780
Ending balance	545,887	551,977	545,887	551,977
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			749,271	527,779
Net income attributable to common stockholders			52,537	132,184
Ending balance	801,808	659,963	801,808	659,963
Eliminations
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(2,123,027)
Net income attributable to common stockholders	55,563	(46,310)	(52,531)	(132,183)
Ending balance	(2,175,558)		(2,175,558)
Eliminations | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(61)	(61)
Ending balance	(61)	(61)	(61)	(61)
Eliminations | APIC
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(1,368,382)	(1,368,384)
Ending balance	(1,368,382)	(1,368,384)	(1,368,382)	(1,368,384)
Eliminations | Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(754,584)	(533,093)
Net income attributable to common stockholders			(52,531)	(132,183)
Ending balance	(807,115)	(665,276)	(807,115)	(665,276)
Parent Company
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			1,354,794
Net income attributable to common stockholders	(55,563)	46,310	52,537	132,184
Ending balance	1,340,994		1,340,994
Parent Company | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			468	468
Ending balance	468	468	468	468
Parent Company | Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(608,001)	(294,139)
Issuance of common stock			6,816	6,748
Repurchase of common stock			(66,337)	(167,105)
Ending balance	(667,522)	(454,496)	(667,522)	(454,496)
Parent Company | APIC
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			1,213,056	1,222,465
Issuance of common stock			(6,816)	(6,748)
Ending balance	1,206,240	1,215,717	1,206,240	1,215,717
Parent Company | Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			749,271	527,779
Net income attributable to common stockholders			52,537	132,184
Ending balance	801,808	659,963	801,808	659,963
Issuer
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			1,258,910
Net income attributable to common stockholders	55,568	46,310	52,537	132,184
Ending balance	1,308,812		1,308,812
Issuer | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			1	1
Ending balance	1	1	1	1
Issuer | APIC
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			571,117	564,554
Amounts related to share-based compensation			(5,159)	(4,237)
Share-based compensation expense			2,524	4,780
Ending balance	568,482	565,097	568,482	565,097
Issuer | Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			687,792	466,300
Net income attributable to common stockholders			52,537	132,184
Ending balance	740,329	598,484	740,329	598,484
Guarantor Subsidiaries
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			52,061
Net income attributable to common stockholders	(5)	0	(6)	(1)
Ending balance	52,055		52,055
Guarantor Subsidiaries | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			60	60
Ending balance	60	60	60	60
Guarantor Subsidiaries | APIC
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			52,004	52,004
Ending balance	52,004	52,004	52,004	52,004
Guarantor Subsidiaries | Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(3)	(2)
Net income attributable to common stockholders			(6)	(1)
Ending balance	(9)	(3)	(9)	(3)
Non-Guarantor Subsidiaries
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			154,338
Net income attributable to common stockholders	0	0	0	0
Ending balance	154,338		154,338
Non-Guarantor Subsidiaries | APIC
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			87,543	87,543
Ending balance	87,543	87,543	87,543	87,543
Non-Guarantor Subsidiaries | Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			66,795	66,795
Net income attributable to common stockholders			0	0
Ending balance	$ 66,795	$ 66,795	$ 66,795	$ 66,795