10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2015

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ________ to ________

O'REILLY AUTOMOTIVE, INC.

(Exact name of registrant as specified in its charter)

Missouri	000-21318	27-4358837
(State or other jurisdiction	Commission file	(I.R.S. Employer
of incorporation or organization)	number	Identification No.)

233 South Patterson Avenue

Springfield, Missouri 65802

(Address of principal executive offices, Zip code)

(417) 862-6708

(Registrant's telephone number, including area code)

Not applicable

(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Yes x No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

Yes x No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer. See definition of "accelerated filer and large accelerated filer" in Rule 12b-2 of the Exchange Act.

Large Accelerated Filer x Accelerated Filer ¨ Non-Accelerated Filer ¨ Smaller Reporting Company ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes ¨ No x

Indicate the number of shares outstanding of each of the issuer's classes of common stock as of the latest practicable date: Common stock, $0.01 par value - 100,989,965 shares outstanding as of May 4, 2015.

O'REILLY AUTOMOTIVE, INC. AND SUBSIDIARIES

FORM 10-Q

FOR THE QUARTER ENDED MARCH 31, 2015

TABLE OF CONTENTS

	Page
PART I - FINANCIAL INFORMATION	2
ITEM 1 - FINANCIAL STATEMENTS (UNAUDITED)	2
Condensed Consolidated Balance Sheets	2
Condensed Consolidated Statements of Income	3
Condensed Consolidated Statements of Cash Flows	4
Notes to Condensed Consolidated Financial Statements	5
ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	12
ITEM 3 - QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	19
ITEM 4 - CONTROLS AND PROCEDURES	19
PART II - OTHER INFORMATION	21
ITEM 1 - LEGAL PROCEEDINGS	21
ITEM 1A - RISK FACTORS	21
ITEM 2 - UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS	21
ITEM 6 - EXHIBITS	22
SIGNATURE PAGES	23

1

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

O'REILLY AUTOMOTIVE, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands, except share data)

	March 31, 2015		December 31, 2014
	(Unaudited)		(Note)
Assets
Current assets:
Cash and cash equivalents	$	473,646	$	250,560
Accounts receivable, net	162,020		143,900
Amounts receivable from suppliers	69,545		69,311
Inventory	2,527,982		2,554,789
Other current assets	40,928		48,418
Total current assets	3,274,121		3,066,978
Property and equipment, at cost	4,080,350		3,993,509
Less: accumulated depreciation and amortization	1,381,502		1,334,949
Net property and equipment	2,698,848		2,658,560
Notes receivable, less current portion	12,414		13,349
Goodwill	756,384		756,384
Other assets, net	43,943		45,030
Total assets	$	6,785,710	$	6,540,301
Liabilities and shareholders' equity
Current liabilities:
Accounts payable	$	2,470,749	$	2,417,167
Self-insurance reserves	67,676		64,882
Accrued payroll	75,059		78,442
Accrued benefits and withholdings	42,413		62,946
Deferred income taxes	16,651		17,258
Income taxes payable	78,939		—
Other current liabilities	200,888		189,836
Current portion of long-term debt	6		25
Total current liabilities	2,952,381		2,830,556
Long-term debt, less current portion	1,396,741		1,396,615
Deferred income taxes	81,330		85,164
Other liabilities	211,758		209,548
Shareholders' equity:
Common stock, $0.01 par value:
Authorized shares – 245,000,000
Issued and outstanding shares –
101,347,744 as of March 31, 2015, and
101,602,935 as of December 31, 2014	1,013		1,016
Additional paid-in capital	1,234,133		1,194,929
Retained earnings	908,354		822,473
Total shareholders' equity	2,143,500		2,018,418
Total liabilities and shareholders' equity	$	6,785,710	$	6,540,301

Note: The balance sheet at December 31, 2014, has been derived from the audited consolidated financial statements at that date, but does not include all of the information and footnotes required by United States generally accepted accounting principles for complete financial statements.

See accompanying Notes to condensed consolidated financial statements.

2

O'REILLY AUTOMOTIVE, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

(Unaudited)

(In thousands, except per share data)

	For the Three Months Ended   March 31,
	2015			2014
Sales	$	1,901,903		$	1,727,943
Cost of goods sold, including warehouse and distribution expenses	914,944			850,227
Gross profit	986,959			877,716
Selling, general and administrative expenses	636,586			590,596
Operating income	350,373			287,120
Other income (expense):
Interest expense	(14,402		)	(13,409		)
Interest income	580			631
Other, net	1,113			618
Total other expense	(12,709		)	(12,160		)
Income before income taxes	337,664			274,960
Provision for income taxes	124,800			101,100
Net income	$	212,864		$	173,860
Earnings per share-basic:
Earnings per share	$	2.09		$	1.64
Weighted-average common shares outstanding – basic	101,612			106,191
Earnings per share-assuming dilution:
Earnings per share	$	2.06		$	1.61
Weighted-average common shares outstanding – assuming dilution	103,257			108,070

See accompanying Notes to condensed consolidated financial statements.

3

O'REILLY AUTOMOTIVE, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(In thousands)

	For the Three Months Ended   March 31,
	2015			2014
Operating activities:
Net income	$	212,864		$	173,860
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property, equipment and intangibles	54,950			47,477
Amortization of debt discount and issuance costs	525			520
Excess tax benefit from stock options exercised	(21,188		)	(17,850		)
Deferred income taxes	(4,441		)	(3,796		)
Share-based compensation programs	5,890			5,096
Other	1,355			1,526
Changes in operating assets and liabilities:
Accounts receivable	(19,867		)	(13,016		)
Inventory	26,807			(21,994		)
Accounts payable	53,582			104,376
Income taxes payable	117,221			69,922
Other	(21,673		)	(572		)
Net cash provided by operating activities	406,025			345,549
Investing activities:
Purchases of property and equipment	(91,140		)	(83,085		)
Proceeds from sale of property and equipment	658			287
Payments received on notes receivable	935			900
Net cash used in investing activities	(89,547		)	(81,898		)
Financing activities:
Principal payments on capital leases	(19		)	(18		)
Repurchases of common stock	(134,813		)	(22,067		)
Excess tax benefit from stock options exercised	21,188			17,850
Net proceeds from issuance of common stock	20,252			21,097
Net cash (used in) provided by financing activities	(93,392		)	16,862
Net increase in cash and cash equivalents	223,086			280,513
Cash and cash equivalents at beginning of the period	250,560			231,318
Cash and cash equivalents at end of the period	$	473,646		$	511,831
Supplemental disclosures of cash flow information:
Income taxes paid	$	8,675		$	33,331
Interest paid, net of capitalized interest	23,435			22,419

See accompanying Notes to condensed consolidated financial statements.

4

O'REILLY AUTOMOTIVE, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

March 31, 2015

NOTE 1 - BASIS OF PRESENTATION

The accompanying unaudited condensed consolidated financial statements of O'Reilly Automotive, Inc. and its subsidiaries (the "Company" or "O'Reilly") have been prepared in accordance with United States generally accepted accounting principles ("U.S. GAAP") for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the three months ended March 31, 2015, are not necessarily indicative of the results that may be expected for the year ended December 31, 2015. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2014.

NOTE 2 – FAIR VALUE MEASUREMENTS

The Company uses the fair value hierarchy, which prioritizes the inputs used to measure the fair value of certain of its financial instruments. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). The Company uses the income and market approaches to determine the fair value of its assets and liabilities. The three levels of the fair value hierarchy are set forth below:

• Level 1 – Quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity can access at the measurement date.

• Level 2 – Inputs other than quoted prices in active markets included within Level 1 that are observable for the asset or liability, either directly or indirectly.

• Level 3 – Unobservable inputs for the asset or liability.

Financial assets and liabilities measured at fair value on a recurring basis:

The carrying amount of the Company's marketable securities is included in "Other assets, net" on the accompanying Condensed Consolidated Balance Sheets as of March 31, 2015, and December 31, 2014. The Company recorded $0.4 million of appreciation in fair value related to its marketable securities, which is included in "Other income (expense)" on the accompanying Condensed Consolidated Statements of Income, for the three months ended March 31, 2015.

The table below identifies the estimated fair value of the Company's marketable securities, determined by reference to quoted market prices (Level 1), as of March 31, 2015, and December 31, 2014 (in thousands):

	Quoted Prices in Active Markets for Identical Instruments (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)				Total
	March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014
Marketable securities	$	16,656	$	15,378	$	—	$	—	$	—	$	—	$	16,656	$	15,378

Non-financial assets and liabilities measured at fair value on a nonrecurring basis:

Certain long-lived non-financial assets and liabilities may be required to be measured at fair value on a nonrecurring basis in certain circumstances, including when there is evidence of impairment. These non-financial assets and liabilities may include assets acquired in a business combination or property and equipment that are determined to be impaired. As of March 31, 2015, and December 31, 2014, the Company did not have any non-financial assets or liabilities that had been measured at fair value subsequent to initial recognition.

Fair value of financial instruments:

The carrying amounts of the Company's senior notes are included in "Long-term debt, less current portion" on the accompanying Condensed Consolidated Balance Sheets as of March 31, 2015, and December 31, 2014. See Note 3 for further discussion on the Company's senior notes.

5

The table below identifies the estimated fair value of the Company's senior notes, using the market approach. The fair values as of March 31, 2015, and December 31, 2014, were determined by reference to quoted market prices of the same or similar instruments (Level 2) (in thousands):

	March 31, 2015				December 31, 2014
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
4.875% Senior Notes due 2021	$	497,964	$	558,055	$	497,876	$	566,700
4.625% Senior Notes due 2021	299,663		331,769		299,650		337,222
3.800% Senior Notes due 2022	299,134		314,468		299,109		310,749
3.850% Senior Notes due 2023	$	299,980	$	314,806	$	299,980	$	311,656

The accompanying Condensed Consolidated Balance Sheets include other financial instruments, including cash and cash equivalents, accounts receivable, amounts receivable from suppliers and accounts payable. Due to the short-term nature of these financial instruments, the Company believes that the carrying values of these instruments approximate their fair values.

NOTE 3 – LONG-TERM DEBT

The following table identifies the amounts included in "Current portion of long-term debt" and "Long-term debt, less current portion" on the accompanying Condensed Consolidated Balance Sheets as of March 31, 2015, and December 31, 2014 (in thousands):

	March 31, 2015		December 31, 2014
Revolving Credit Facility	$	—	$	—
4.875% Senior Notes due 2021(1), effective interest rate of 4.966%	497,964		497,876
4.625% Senior Notes due 2021(2), effective interest rate of 4.648%	299,663		299,650
3.800% Senior Notes due 2022(3), effective interest rate of 3.845%	299,134		299,109
3.850% Senior Notes due 2023(4), effective interest rate of 3.851%	299,980		299,980
Capital leases	6		25
Total debt and capital lease obligations	1,396,747		1,396,640
Current portion of long-term debt	6		25
Long-term debt, less current portion	$	1,396,741	$	1,396,615

⁽¹⁾  Net of unamortized discount of $2.0 million as of March 31, 2015, and $2.1 million as of December 31, 2014.

⁽²⁾  Net of unamortized discount of $0.3 million as of March 31, 2015, and $0.4 million as of December 31, 2014.

⁽³⁾  Net of unamortized discount of $0.9 million as of March 31, 2015, and December 31, 2014.

⁽⁴⁾  Net of unamortized discount of less than $0.1 million as of March 31, 2015, and December 31, 2014.

Unsecured revolving credit facility:

On January 14, 2011, the Company entered into a credit agreement, as amended by Amendment No. 1 dated as of September 9, 2011, and as further amended by Amendment No. 2 dated as of July 2, 2013 (the "Credit Agreement"). The Credit Agreement provides for a $600 million unsecured revolving credit facility (the "Revolving Credit Facility") arranged by Bank of America, N.A., which is scheduled to mature in July of 2018. The Credit Agreement includes a $200 million sub-limit for the issuance of letters of credit and a $75 million sub-limit for swing line borrowings under the Revolving Credit Facility. As described in the Credit Agreement governing the Revolving Credit Facility, the Company may, from time to time, subject to certain conditions, increase the aggregate commitments under the Revolving Credit Facility by up to $200 million. As of March 31, 2015, and December 31, 2014, the Company had outstanding letters of credit, primarily to support obligations related to workers' compensation, general liability and other insurance policies, in the amount of $50.5 million and $47.9 million, respectively, reducing the aggregate availability under the Revolving Credit Facility by those amounts. As of March 31, 2015, and December 31, 2014, the Company had no outstanding borrowings under the Revolving Credit Facility.

Borrowings under the Revolving Credit Facility (other than swing line loans) bear interest, at the Company's option, at the Base Rate or Eurodollar Rate (both as defined in the Credit Agreement) plus an applicable margin. Swing line loans made under the Revolving Credit Facility bear interest at the Base Rate plus the applicable margin for Base Rate loans. In addition, the Company pays a facility fee on the aggregate amount of the commitments in an amount equal to a percentage of such commitments. The interest rate margins and facility fee are based upon the better of the ratings assigned to the Company's debt by Moody's Investor Service, Inc. and Standard & Poor's Ratings Services, subject to limited exceptions. As of March 31, 2015, based upon the Company's credit ratings, its margin for Base Rate loans was 0.000%, its margin for Eurodollar Rate loans was 0.875% and its facility fee was 0.125%.

6

The Credit Agreement contains certain covenants, including limitations on indebtedness, a minimum consolidated fixed charge coverage ratio of 2.50 times through maturity, and a maximum consolidated leverage ratio of 3.00 times through maturity. The consolidated leverage ratio includes a calculation of adjusted debt to earnings before interest, taxes, depreciation, amortization, rent and non-cash share-based compensation expense. Adjusted debt includes outstanding debt, outstanding stand-by letters of credit and similar instruments, six-times rent expense and excludes any premium or discount recorded in conjunction with the issuance of long-term debt. In the event that the Company should default on any covenant contained within the Credit Agreement, certain actions may be taken, including, but not limited to, possible termination of commitments, immediate payment of outstanding principal amounts plus accrued interest and other amounts payable under the Credit Agreement and litigation from lenders.As of March 31, 2015, the Company remained in compliance with all covenants under the Credit Agreement.

Senior notes:

The Company has issued $1.4 billion aggregate principal amount of unsecured senior notes due between 2021 and 2023 with United Missouri Bank, N.A. as trustee. Interest on the senior notes, ranging from 3.800% to 4.875%, is payable biannually and is computed on the basis of a 360-day year.

The senior notes are guaranteed on a senior unsecured basis by each of the Company's subsidiaries ("Subsidiary Guarantors") that incurs or guarantees obligations under the Company's Credit Agreement or under other credit facility or capital markets debt of the Company's or any of the Company's Subsidiary Guarantors. The guarantees are joint and several and full and unconditional, subject to certain customary automatic release provisions, including release of the Subsidiary Guarantor's guarantee under the Company's Credit Agreement and certain other debt, or, in certain circumstances, the sale or other disposition of a majority of the voting power of the capital interest in, or of all or substantially all of the property of, the Subsidiary Guarantor.  Each of the Subsidiary Guarantors is 100% owned, directly or indirectly, by the Company and the Company has no independent assets or operations other than those of its subsidiaries. The only direct or indirect subsidiaries of the Company that would not be Subsidiary Guarantors would be minor subsidiaries. Neither the Company, nor any of its Subsidiary Guarantors, is subject to any material or significant restrictions on the Company's ability to obtain funds from its subsidiaries by dividend or loan or to transfer assets from such subsidiaries, except as provided by applicable law. Each of the senior notes is subject to certain customary covenants, with which the Company complied as of March 31, 2015.

NOTE 4 – WARRANTIES

The Company provides warranties on certain merchandise it sells with warranty periods ranging from 30 days to limited lifetime warranties. The risk of loss arising from warranty claims is typically the obligation of the Company's suppliers. Certain suppliers provide upfront allowances to the Company in lieu of accepting the obligation for warranty claims. For this merchandise, when sold, the Company bears the risk of loss associated with the cost of warranty claims. Differences between supplier allowances received by the Company in lieu of warranty obligations and estimated warranty expense are recorded as an adjustment to cost of sales. Estimated warranty costs, which are recorded as obligations at the time of sale, are based on the historical failure rate of each individual product line. The Company's historical experience has been that failure rates are relatively consistent over time and that the ultimate cost of warranty claims to the Company has been driven by volume of units sold as opposed to fluctuations in failure rates or the variation of the cost of individual claims.

The Company's product warranty liabilities are included in "Other current liabilities" on the accompanying Condensed Consolidated Balance Sheets as of March 31, 2015, and December 31, 2014. The following table identifies the changes in the Company's aggregate product warranty liabilities for the three months ended March 31, 2015 (in thousands):

Balance at December 31, 2014	$	34,226
Warranty claims	(10,733		)
Warranty accruals	8,616
Balance at March 31, 2015	$	32,109

NOTE 5 – SHARE REPURCHASE PROGRAM

In January of 2011, the Company's Board of Directors approved a share repurchase program. Under the program, the Company may, from time to time, repurchase shares of its common stock, solely through open market purchases effected through a broker dealer at prevailing market prices, based on a variety of factors such as price, corporate trading policy requirements and overall market conditions. The Company and its Board of Directors may increase or otherwise modify, renew, suspend or terminate the share repurchase program at any time, without prior notice. As announced on February 4, 2015, the Company's Board of Directors approved a resolution to increase the authorization amount under the share repurchase program by an additional $500 million, resulting in a cumulative authorization amount of $5.0 billion. The additional $500 million authorization is effective for a three-year period, beginning on its announcement date.

7

The following table identifies shares of the Company's common stock that have been repurchased as part of the Company's publicly announced share repurchase program (in thousands, except per share data):

	For the Three Months Ended   March 31,
	2015		2014
Shares repurchased	650		149
Average price per share	$	207.50	$	148.18
Total investment	$	134,803	$	22,065

As of March 31, 2015, the Company had $644.5 million remaining under its share repurchase program. Subsequent to the end of the first quarter and through May 8, 2015, the Company repurchased an additional 0.6 million shares of its common stock under its share repurchase program, at an average price of $218.25, for a total investment of $133.9 million. The Company has repurchased a total of 47.6 million shares of its common stock under its share repurchase program since the inception of the program in January of 2011 and through May 8, 2015, at an average price of $94.29, for a total aggregate investment of $4.5 billion.

NOTE 6 – SHARE-BASED COMPENSATION AND BENEFIT PLANS

The Company recognizes share-based compensation expense based on the fair value of the grants, awards or shares at the time of the grant, award or issuance. Share-based compensation includes stock option awards issued under the Company's employee incentive plans and director stock plan, restricted stock awarded under the Company's employee incentive plans, performance incentive plan and director stock plan, stock issued through the Company's employee stock purchase plan and stock awarded to employees through other benefit programs.

Stock options:

The Company's stock-based incentive plans provide for the granting of stock options for the purchase of common stock of the Company to directors and certain key employees of the Company. Options are granted at an exercise price that is equal to the closing market price of the Company's common stock on the date of the grant. Director options granted under the plans expire after seven years and are fully vested after six months. Employee options granted under the plans expire after ten years and typically vest 25% per year, over four years. The Company records compensation expense for the grant date fair value of the option awards, adjusted for estimated forfeitures, evenly over the minimum required service period.

The table below identifies stock option activity under these plans during the three months ended March 31, 2015:

	Shares (in thousands)		Weighted-Average Exercise Price
Outstanding at December 31, 2014	4,065		$	64.57
Granted	209		200.96
Exercised	(377	)	46.30
Forfeited	(28	)	86.31
Outstanding at March 31, 2015	3,869		$	73.58
Exercisable at March 31, 2015	2,566		$	48.16

The fair value of each stock option award is estimated on the date of the grant using the Black-Scholes option pricing model. The Black-Scholes model requires the use of assumptions, including the risk free rate, expected life, expected volatility and expected dividend yield.

• Risk-free interest rate – The United States Treasury rates in effect at the time the options are granted for the options' expected life.

•

• Expected life - Represents the period of time that options granted are expected to be outstanding. The Company uses historical experience to estimate the expected life of options granted.

• Expected volatility – Measure of the amount by which the Company's stock price has historically fluctuated.

• Expected dividend yield – The Company has not paid, nor does it have plans in the foreseeable future to pay, any dividends.

8

The table below identifies the weighted-average assumptions used for grants awarded during the three months ended March 31, 2015 and 2014:

	For the Three Months Ended   March 31,
	2015			2014
Risk free interest rate	1.57	%		1.74	%
Expected life	6.1		Years	5.9		Years
Expected volatility	22.4	%		25.5	%
Expected dividend yield	—	%		—	%

The Company's forfeiture rate is the estimated percentage of options awarded that are expected to be forfeited or canceled prior to becoming fully vested. The Company's estimate is evaluated periodically and is based upon historical experience at the time of evaluation and reduces expense ratably over the vesting period or the minimum required service period.

The following table summarizes activity related to stock options awarded by the Company for the three months ended March 31, 2015 and 2014 (in thousands, except per share data):

	For the Three Months Ended   March 31,
	2015		2014
Compensation expense for stock options awarded	$	4,997	$	4,085
Income tax benefit from compensation expense related to stock options	1,847		1,512
Weighted-average grant-date fair value of options awarded	$	51.57	$	39.13

The remaining unrecognized compensation expense related to unvested stock option awards at March 31, 2015, was $33.5 million and the weighted-average period of time over which this cost will be recognized is 2.7 years.

Other share-based compensation plans:

The Company sponsors other share-based compensation plans: an employee stock purchase plan (the "ESPP"), which permits all eligible employees to purchase shares of the Company’s common stock at 85% of the fair market value; a performance incentive plan, which provides for the award of shares of restricted stock to its corporate and senior management that vest evenly over a three-year period and are held in escrow until such vesting has occurred; and a director stock plan, which provides for the award of shares of restricted stock to the Company's independent directors that vest evenly over a three-year period and are held in escrow until such vesting has occurred. The fair value of shares awarded under these plans is based on the closing market price of the Company's common stock on the date of award, and compensation expense is recorded evenly over the minimum required service period.

The table below summarizes activity related to the Company's other share-based compensation plans for the three months ended March 31, 2015 and 2014 (in thousands):

	For the Three Months Ended   March 31,
	2015		2014
Compensation expense for shares issued under the ESPP	$	489	$	438
Income tax benefit from compensation expense related to shares issued under the ESPP	181		162
Compensation expense for restricted shares awarded	404		573
Income tax benefit from compensation expense related to restricted awards	$	149	$	212

Profit sharing and savings plan:

The Company sponsors a contributory profit sharing and savings plan (the "401(k) Plan") that covers substantially all employees who are at least 21 years of age and have at least six months of service. The Company makes matching contributions equal to 100% of the first 2% of each employee's wages that are contributed and 25% of the next 4% of each employee's wages that are contributed. An employee must be employed on December 31 to receive that year's Company matching contribution, with the matching contribution funded annually in the January following the year in which the matching contribution was earned. The Company may also make additional discretionary profit sharing contributions to the plan on an annual basis as determined by the Board of Directors. The Company did not make any discretionary contributions to the 401(k) Plan during the three months ended March 31, 2015 or 2014. The Company expensed

9

matching contributions under the 401(k) Plan in the amounts of $4.2 million and $3.9 million for the three months ended March 31, 2015 and 2014, respectively.

Nonqualified deferred compensation plan:

The Company sponsors a nonqualified deferred compensation plan (the "Deferred Compensation Plan") for highly compensated employees whose contributions to the 401(k) Plan are limited due to the application of the annual limitations under the Internal Revenue Code. The Deferred Compensation Plan provides these employees with the opportunity to defer compensation that was precluded under the Company's 401(k) Plan due to the annual limitations, including salary and incentive based compensation, which is then matched by the Company using the same formula as the 401(k) Plan. An employee must be employed on December 31 to receive that year's Company matching contribution, with the matching contribution funded annually in the January following the year in which the matching contribution was earned. In the event of bankruptcy, the assets of this plan are available to satisfy the claims of general creditors. The Company has an unsecured obligation to pay, in the future, the value of the deferred compensation and Company match adjusted to reflect the performance, whether positive or negative, of selected investment measurement options chosen by each participant during the deferral period. The liability for compensation deferred under the Deferred Compensation Plan was $16.7 million and $15.4 million as of March 31, 2015, and December 31, 2014, respectively, and was included within "Other liabilities" on the Condensed Consolidated Balance Sheets. The Company expensed matching contributions under the Deferred Compensation Plan in the amounts of less than $0.1 million and $0.1 million for the three months ended March 31, 2015 and 2014, respectively.

NOTE 7 – EARNINGS PER SHARE

The following table illustrates the computation of basic and diluted earnings per share for the three months ended March 31, 2015 and 2014 (in thousands, except per share data):

	For the Three Months Ended   March 31,
	2015		2014
Numerator (basic and diluted):
Net income	$	212,864	$	173,860
Denominator:
Denominator for basic earnings per share - weighted-average shares	101,612		106,191
Effect of stock options (1)	1,645		1,879
Denominator for diluted earnings per share - weighted-average shares	103,257		108,070
Earnings per share:
Earnings per share-basic	$	2.09	$	1.64
Earnings per share-assuming dilution	$	2.06	$	1.61
Antidilutive potential common shares not included in the calculation of diluted earnings per share:
Stock options (1)	278		288
Weighted-average exercise price per share of antidilutive stock options (1)	$	195.90	$	135.22

⁽¹⁾  See Note 6 for further discussion on the terms of the Company's share-based compensation plans.

For the three months ended March 31, 2015 and 2014, the computation of diluted earnings per share did not include certain securities. These securities represent underlying stock options not included in the computation of diluted earnings per share, because the inclusion of such equity awards would have been antidilutive.

Subsequent to the end of the first quarter and through May 8, 2015, the Company repurchased 0.6 million shares of its common stock, at an average price of $218.25, for a total investment of $133.9 million.

NOTE 8 – LEGAL MATTERS

O'Reilly is currently involved in litigation incidental to the ordinary conduct of the Company's business. The Company records reserves for litigation losses in instances where a material adverse outcome is probable and the Company is able to reasonably estimate the probable loss. The Company reserves for an estimate of material legal costs to be incurred in pending litigation matters. Although the Company cannot ascertain the amount of liability that it may incur from any of these matters, it does not currently believe that, in the aggregate,

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these matters, taking into account applicable insurance and reserves, will have a material adverse effect on its consolidated financial position, results of operations or cash flows in a particular quarter or annual period.

As previously reported, the Company received a subpoena from the District Attorney of the County of Alameda, along with other environmental prosecutorial offices in the state of California, seeking documents and information related to the handling, storage and disposal of hazardous waste. Management has an ongoing and open dialogue with these agencies regarding this matter and is cooperating fully with the request; however, at this time a prediction of the ultimate outcome of these efforts cannot be determined.

NOTE 9 - RECENT ACCOUNTING PRONOUNCEMENTS

In May of 2014, the Financial Accounting Standards Board (the "FASB") issued Accounting Standard Update ("ASU") No. 2014-09, "Revenue from Contracts with Customers (Topic 606)" ("ASU 2014-09"). Under ASU 2014-09, an entity is required to follow a five-step process to determine the amount of revenue to recognize when promised goods or services are transferred to customers. ASU 2014-09 offers specific accounting guidance for costs to obtain or fulfill a contract with a customer. In addition, an entity is required to disclose sufficient information to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. For public companies, ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2016, including periods within that reporting period, and can be adopted either retrospectively or as a cumulative effect adjustment at the date of adoption, with early adoption not permitted. The Company will adopt this guidance beginning with its first quarter ending March 31, 2017. The Company is in the process of evaluating the potential future impact, if any, of ASU 2014-09 on its consolidated financial position, results of operations and cash flows.

In January of 2015, the FASB issued ASU No. 2015-01, "Extraordinary and Unusual Items (Subtopic 225-20)" ("ASU 2015-01"). ASU 2015-01 eliminates from generally accepted accounting principles the concept of extraordinary items; such that, an entity will no longer need to assess whether a particular event or transaction event is extraordinary. ASU 2015-01 is effective for annual reporting periods beginning after December 15, 2015, including periods within that reporting period, and early adoption is permitted. The Company will adopt this guidance beginning with its first quarter ending March 31, 2016. The application of this guidance is not expected to have a material impact on the Company's consolidated financial condition, results of operations or cash flows.

In April of 2015, the FASB issued ASU No. 2015-03, "Interest - Imputation of Interest (Subtopic 835-30)" ("ASU 2015-03"). ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability. ASU 2015-03 is effective for annual reporting periods beginning after December 15, 2015, including periods within that reporting period, requires retrospective application, and early adoption is permitted. The Company will adopt this guidance with its first quarter ending March 31, 2016. The application of this guidance affects classification only, and therefore, it is not expected to have a material impact on the Company's consolidated financial condition, results of operations or cashflows.

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Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

Unless otherwise indicated, "we," "us," our" and similar terms, as well as references to the "Company" or "O'Reilly," refer to O'Reilly Automotive, Inc. and its subsidiaries.

In Management's Discussion and Analysis, we provide a historical and prospective narrative of our general financial condition, results of operations, liquidity and certain other factors that may affect our future results, including:

• an overview of the key drivers of the automotive aftermarket industry;

•our results of operations for the three months ended March 31, 2015 and 2014;

• our liquidity and capital resources;

• any contractual obligations to which we are committed;

• our critical accounting estimates;

• the inflation and seasonality of our business; and

•recent accounting pronouncements that may affect our Company.

The review of Management's Discussion and Analysis should be made in conjunction with our condensed consolidated financial statements, related notes and other financial information, forward-looking statements and other risk factors included elsewhere in this quarterly report.

FORWARD-LOOKING STATEMENTS

We claim the protection of the safe-harbor for forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. You can identify these statements by forward-looking words such as "estimate," "may," "could," "will," "believe," "expect," "would," "consider," "should," "anticipate," "project," "plan," "intend" or similar words. In addition, statements contained within this quarterly report that are not historical facts are forward-looking statements, such as statements discussing, among other things, expected growth, store development, integration and expansion strategy, business strategies, future revenues and future performance. These forward-looking statements are based on estimates, projections, beliefs and assumptions and are not guarantees of future events and results. Such statements are subject to risks, uncertainties and assumptions, including, but not limited to, the economy in general, inflation, product demand, the market for auto parts, competition, weather, risks associated with the performance of acquired businesses, our ability to hire and retain qualified employees, consumer debt levels, our increased debt levels, credit ratings on public debt, governmental regulations, terrorist activities, war and the threat of war. Actual results may materially differ from anticipated results described or implied in these forward-looking statements. Please refer to the "Risk Factors" section of our annual report on Form 10-K for the year ended December 31, 2014, for additional factors that could materially affect our financial performance. Forward-looking statements speak only as of the date they were made, and we undertake no obligation to publicly update any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by applicable law.

OVERVIEW

We are a specialty retailer of automotive aftermarket parts, tools, supplies, equipment and accessories in the United States. We are one of the largest U.S. automotive aftermarket specialty retailers, selling our products to both do-it-yourself ("DIY") customers and professional service providers – our "dual market strategy." Our stores carry an extensive product line consisting of new and remanufactured automotive hard parts, maintenance items, accessories, a complete line of auto body paint and related materials, automotive tools and professional service provider service equipment. Our extensive product line includes an assortment of products that are differentiated by quality and price for most of the product lines we offer. For many of our product offerings, this quality differentiation reflects "good," "better," and "best" alternatives. Our sales and total gross margin dollars are highest for the "best" quality category of products. Consumers' willingness to select products at a higher point on the value spectrum is a driver of sales and profitability in our industry. Our stores also offer enhanced services and programs to our customers, including:  used oil, oil filter and battery recycling; battery, wiper and bulb replacement; battery diagnostic testing; electrical and module testing; check engine light code extraction; loaner tool program; drum and rotor resurfacing; custom hydraulic hoses; professional paint shop mixing and related materials; and machine shops.

Our strategy is to open new stores to achieve greater penetration into existing markets and expansion into new, contiguous markets. We plan to open 205 net, new stores in 2015. We typically open new stores either by (i) constructing a new facility or renovating an existing one on property we purchase or lease and stocking the new store with fixtures and inventory; (ii) acquiring an independently owned auto parts store, typically by the purchase of substantially all of the inventory and other assets (other than realty) of such store; or (iii) purchasing multi-store chains. We believe our investment in store growth will be funded with the cash flows expected to be generated by our existing operations and through available borrowings under our existing credit facility. During the three months ended March 31, 2015, we opened 67 stores and did not close any stores and, as of that date, operated 4,433 stores in 43 states.

Operating within the retail industry, we are influenced by a number of general macroeconomic factors including, but not limited to, fuel costs, unemployment rates, consumer preferences and spending habits, and competition. During challenging macroeconomic conditions,

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we believe that the average consumer's tendency has been to defer maintenance on their vehicles or "trade down" to lower quality products. We have ongoing initiatives aimed at tailoring our product offering to adjust to customers' changing preferences; however, we also continue to have initiatives focused on marketing and training to educate customers on the advantages of ongoing vehicle maintenance, as well as "purchasing up" on the value spectrum.

We believe the key drivers of current and future demand of the products sold within the automotive aftermarket include the number of U.S. miles driven, number of U.S. registered vehicles, new light vehicle registrations, average vehicle age and unemployment.

• Number of Miles Driven - The number of total miles driven in the U.S. influences the demand for repair and maintenance products sold within the automotive aftermarket. According to the Department of Transportation, prior to 2007, the annual number of total miles driven in the U.S. had steadily increased; however, between 2008 and 2013, as the U.S. experienced difficult macroeconomic conditions and historically high levels of unemployment, the number of total miles driven in the U.S. remained relatively flat. In 2014, as the U.S. economy began to recover, miles driven also improved increasing 1.7% for the year and through February of 2015, year-to-date miles driven increased 3.9%. We believe that as the U.S. economy continues to recover and the level of unemployment continues to decline, total miles driven in the U.S. will continue to increase and return to the historical trend of long-term annual growth. In total vehicles in the U.S. continue to be driven approximately three trillion miles per year, resulting in ongoing wear and tear and continued demand for the repair and maintenance products sold within the automotive aftermarket.

• Number of U.S. Registered Vehicles, New Light Vehicle Registrations and Average Vehicle Age - The total number of vehicles on the road and the average age of the vehicle population heavily influence the demand for products sold within the automotive aftermarket industry. As reported by The Auto Care Association, the total number of registered vehicles increased 6% from 2003 to 2013, bringing the number of light vehicles on the road to 249 million by the end of 2013. For the year ended December 31, 2014, the seasonally adjusted annual rate of light vehicle sales in the U.S. ("SAAR") was approximately 17 million, and for 2015 the SAAR is estimated to again be approximately 17 million, contributing to the continued growth in the total number of registered vehicles on the road. During the past decade, vehicle scrappage rates have remained relatively stable, ranging from just 5.2% to 5.7% annually. The stable scrappage rates over the past decade have contributed to an increase in the average age of the U.S. vehicle population over that period, growing 16%, from 9.7 years in 2003 to 11.3 years in 2013. We believe this increase in average age can be attributed to better engineered and manufactured vehicles, which can be reliably driven at higher mileages due to better quality power trains and interiors and exteriors, and the consumer's willingness to invest in maintaining these higher-mileage, better built vehicles. As the average age of the vehicle on the road increases, a larger percentage of miles are being driven by vehicles that are outside of a manufacturer warranty. These out-of-warranty, older vehicles generate strong demand for automotive aftermarket products as they go through more routine maintenance cycles, have more frequent mechanical failures and generally require more maintenance than newer vehicles. We believe consumers will continue to invest in these reliable, higher-quality, higher-mileage vehicles and these investments, along with an increasing total light vehicle fleet, will support continued demand for automotive aftermarket products.

• Unemployment - Unemployment, underemployment, the threat of future joblessness and the uncertainty surrounding the overall economic health of the U.S. have a negative impact on consumer confidence and the level of consumer discretionary spending. Long-term trends of high unemployment could impede the growth of annual miles driven, as well as decrease consumer discretionary spending, both of which negatively impact demand for products sold in the automotive aftermarket industry. As of December 31, 2014, the U.S. unemployment rate was 5.6%, and as of March 31, 2015, the U.S. unemployment rate decreased to 5.5%, its lowest rate in over six years. We believe that as the economy continues to recover, total employment should increase and we would expect to see a corresponding increase in commuter traffic as unemployed individuals return to work. Aided by the anticipated increase in commuter miles, we believe overall annual U.S. miles driven should return to a period of long-term annual growth, resulting in continued demand for automotive aftermarket products.

We remain confident in our ability to gain market share in our existing markets and grow our business in new markets by focusing on our dual market strategy and the core O'Reilly values of hard work and excellent customer service.

RESULTS OF OPERATIONS

Sales:

Sales for the three months ended March 31, 2015, increased $174 million to $1.90 billion from $1.73 billion for the same period one year ago, representing an increase of 10%. Comparable store sales for stores open at least one year increased 7.2% and 6.3% for the three months ended March 31, 2015 and 2014, respectively. Comparable store sales are calculated based on the change in sales of stores open at least one year and exclude sales of specialty machinery, sales to independent parts stores and sales to Team Members.

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The following table presents the components of the increase in sales for the three months ended March 31, 2015 (in millions):

	Increase in Sales for the Three Months Ended March 31, 2015, Compared to the Same Period in 2014
Store sales:
Comparable store sales	$	122
Non-comparable store sales:
Sales for stores opened throughout 2014, excluding stores open at least one year that are included in comparable store sales	42
Sales in 2014 for stores that have closed	(2		)
Sales for stores opened throughout 2015	9
Non-store sales:
Includes sales of machinery and sales to independent parts stores and Team Members	3
Total increase in sales	$	174

We believe the increased sales achieved by our stores are the result of store growth and the high levels of customer service provided by our well-trained and technically proficient Team Members, superior inventory availability, including same day and over-night access to inventory in our regional distribution centers, enhanced services and programs offered in our stores, a broader selection of product offerings in most stores with a dynamic catalog system to identify and source parts, a targeted promotional and advertising effort through a variety of media and localized promotional events, continued improvement in the merchandising and store layouts of our stores, compensation programs for all store Team Members that provide incentives for performance and our continued focus on serving both DIY and professional service provider customers.

Our comparable store sales increase for the three months ended March 31, 2015, was driven by increases in average ticket values and customer transaction counts for both DIY and professional service provider customers. The improvement in average ticket values was the result of the continued growth of the more costly, hard part categories as a percentage of our total sales. The overall growth in our hard part categories continues to be driven by our faster growing professional service provider sales, which are primarily comprised of hard part categories, and the increasing complexity and cost of replacement parts necessary to maintain the current population of better engineered and more technically advanced vehicles. These vehicles require less frequent repairs and component parts are more durable and last for longer periods of time; however, when repairs are required, the cost of the replacement parts is, on average, greater. While the less frequent repairs required by these better engineered vehicles does create pressure on transaction counts, both DIY and professional service provider customer transaction counts were positive. Transaction counts for both DIY and professional service provider customers benefited from a positive macroeconomic environment during the first three months ended March 31, 2015, including lower gas prices and declining levels of unemployment, which led to increased miles driven and a corresponding increase in vehicle maintenance. The increase in DIY transaction counts was driven by our continued focus on staffing our stores with knowledgeable parts professionals to assist our DIY customers during high DIY traffic periods, including nights and weekends. The increase in professional service provider customer transaction counts was driven by our acquired markets and the continued growth of less mature stores.

We opened 67 net, new stores during the three months ended March 31, 2015, compared to 50 net, new stores for the three months ended March 31, 2014. As of March 31, 2015, we operated 4,433 stores in 43 states compared to 4,216 stores in 42 states at March 31, 2014. We anticipate total new store growth to be 205 net, new store openings in 2015.

Gross profit:

Gross profit for the three months ended March 31, 2015, increased to $987 million (or 51.9% of sales) from $878 million (or 50.8% of sales) for the same period one year ago, representing an increase of 12%. The increase in gross profit dollars was primarily the result of the increase in comparable store sales at existing stores and sales from new stores. The increase in gross profit as a percentage of sales was primarily due to product acquisition cost improvements and a smaller non-cash last-in, last-out ("LIFO") negative impact for the three months ended March 31, 2015, as compared to the same period in the prior year. Acquisition cost improvements are the result of our ongoing negotiations with our suppliers to improve our inventory purchase costs based on our increasing scale. The non-cash negative LIFO impact is the result of our continued product acquisition cost reductions, and due to these acquisition cost reductions, we fully depleted our LIFO reserve in 2013. Our policy is to not write up inventory in excess of replacement cost, and accordingly, we are effectively valuing our inventory at replacement cost. During the three months ended March 31, 2015, our LIFO cost was written down by approximately $8 million to reflect replacement cost and during the three months ended March 31, 2014, our LIFO cost was written down by approximately $23 million to reflect replacement cost.

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Selling, general and administrative expenses:

Selling, general and administrative expenses ("SG&A") for the three months ended March 31, 2015, increased to $637 million (or 33.5% of sales) from $591 million (or 34.2% of sales) for the same period one year ago, representing an increase of 8%. The increase in total SG&A dollars was primarily the result of additional Team Members, facilities and vehicles to support our increased store count. The decrease in SG&A as a percentage of sales was primarily due to increased leverage of store operating costs on strong comparable store sales results.

Operating income:

As a result of the impacts discussed above, operating income for the three months ended March 31, 2015, increased to $350 million (or 18.4% of sales) from $287 million (or 16.6% of sales) for the same period one year ago, representing an increase of 22%.

Other income and expense:

Total other expense for the three months ended March 31, 2015, increased to $13 million (or 0.7% of sales) from $12 million (or 0.7% of sales) for the same period one year ago, representing an increase of 5%. The increase in total other expense was primarily the result of a decrease in the amount of capitalized interest for the three months ended March 31, 2015, as compared to the same period in the prior year.

Income taxes:

Our provision for income taxes for the three months ended March 31, 2015, increased to $125 million (or 6.6% of sales) from $101 million (or 5.9% of sales) for the same period one year ago, representing an increase of 23%. Our effective tax rate for the three months ended March 31, 2015, was 37.0% of income before income taxes compared to 36.8% for the same period one year ago. The increase in our provision for income taxes was primarily the result of higher taxable income in the current period, driven by our strong operating results. The increase in our effective tax rate was primarily due to reduced benefits from employment tax credits for the three months ended March 31, 2015, as compared to the same period in the prior year.

Net income:

As a result of the impacts discussed above, net income for the three months ended March 31, 2015, increased to $213 million (or 11.2% of sales) from $174 million (or 10.1% of sales) for the same period one year ago, representing an increase of 22%.

Earnings per share:

Our diluted earnings per common share for the three months ended March 31, 2015, increased 28% to $2.06 on 103 million shares from $1.61 on 108 million shares for the same period one year ago.

LIQUIDITY AND CAPITAL RESOURCES

Our long-term business strategy requires capital to open new stores, fund strategic acquisitions, expand distribution infrastructure, operate and maintain existing stores and may include the opportunistic repurchase of shares of our common stock through our Board-approved share repurchase program. The primary sources of our liquidity are funds generated from operations and borrowed under our unsecured revolving credit facility. Decreased demand for our products or changes in customer buying patterns could negatively impact our ability to generate funds from operations. Additionally, decreased demand or changes in buying patterns could impact our ability to meet the debt covenants of our credit agreement and, therefore, negatively impact the funds available under our unsecured revolving credit facility. We believe that cash expected to be provided by operating activities and availability under our unsecured revolving credit facility will be sufficient to fund both our short-term and long-term capital and liquidity needs for the foreseeable future. However, there can be no assurance that we will continue to generate cash flows at or above recent levels.

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The following table identifies cash provided by/(used in) our operating, investing and financing activities for the three months ended March 31, 2015 and 2014 (in thousands):

	For the Three Months Ended   March 31,
Liquidity	2015			2014
Total cash provided by (used in):
Operating activities	$	406,025		$	345,549
Investing activities	(89,547		)	(81,898		)
Financing activities	(93,392		)	16,862
Increase in cash and cash equivalents	$	223,086		$	280,513
Capital expenditures	$	91,140		$	83,085
Free cash flow (1)	314,885			262,464

⁽¹⁾  Calculated as net cash provided by operating activities, less capital expenditures for the period.

Operating activities:

The increase in net cash provided by operating activities during the three months ended March 31, 2015, compared to the same period in 2014, was primarily due to larger increases in net income and income taxes payable, partially offset by a decrease in payroll-related liabilities. The larger increase in income taxes payable was primarily the result of a larger prepaid tax position at the end of 2014 as compared to the end of 2013 and higher accrued income taxes payable as of March 31, 2015, as compared to the same period in the prior year. The larger prepaid tax position at the end of 2014 was used to reduce our first quarter 2015 cash tax payment. The higher accrued income taxes payable as of March 31, 2015, was the result of higher taxable income for the three months ended March 31, 2015, as compared to the same period in the prior year. The decrease in accrued payroll-related liabilities during the period, as compared to the same period in the prior year, was due to the timing of payments under certain benefit plans.

Investing activities:

The increase in net cash used in investing activities during the three months ended March 31, 2015, compared to the same period in 2014, was primarily the result of an increase in capital expenditures related to the timing of new store openings in the current period as compared to the same period in the prior year. During the first three months of 2015, we opened 67 new stores, as compared to 50 net, new stores for the same period in the prior year.

Financing activities:

The net cash used in financing activities during the three months ended March 31, 2015, versus net cash provided by financing activities during the three months ended March 31, 2014, was primarily attributable to a higher level of repurchases of our common stock during the current period, as compared to the same period in the prior year.

Unsecured revolving credit facility:

On January 14, 2011, we entered into a credit agreement, as amended by Amendment No. 1 dated as of September 9, 2011, and as further amended by Amendment No. 2 dated as of July 2, 2013 (the "Credit Agreement"). The Credit Agreement provides for a $600 million unsecured revolving credit facility (the "Revolving Credit Facility") arranged by Bank of America, N.A., which is scheduled to mature in July of 2018. The Credit Agreement includes a $200 million sub-limit for the issuance of letters of credit and a $75 million sub-limit for swing line borrowings. As described in the Credit Agreement governing the Revolving Credit Facility, we may, from time to time, subject to certain conditions, increase the aggregate commitments under the Revolving Credit Facility by up to $200 million. As of March 31, 2015, we had outstanding letters of credit, primarily to support obligations related to workers' compensation, general liability and other insurance policies, in the amount of $51 million, reducing the aggregate availability under the Revolving Credit Facility by that amount. As of March 31, 2015, we had no outstanding borrowings under the Revolving Credit Facility.

Senior Notes:

We have issued $1.4 billion aggregate principal amount of unsecured senior notes due between 2021 and 2023 with United Missouri Bank, N.A. as trustee. Interest on the senior notes, ranging from 3.800% to 4.875%, is payable biannually and is computed on the basis of a 360-day year.

The senior notes are guaranteed on a senior unsecured basis by each of our subsidiaries ("Subsidiary Guarantors") that incurs or guarantees obligations under our Credit Agreement or under other credit facility or capital markets debt of ours or any of our Subsidiary Guarantors. The guarantees are joint and several and full and unconditional, subject to certain customary automatic release provisions, including release of the Subsidiary Guarantor's guarantee under our Credit Agreement and certain other debt, or, in certain circumstances, the sale

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or other disposition of a majority of the voting power of the capital interest in, or of all or substantially all the property of, the Subsidiary Guarantor.  Each of the Subsidiary Guarantors is 100% owned, directly or indirectly, by us and we have no independent assets or operations other than those of our subsidiaries. Our only direct or indirect subsidiaries that would not be Subsidiary Guarantors would be minor subsidiaries. Neither we, nor any of our Subsidiary Guarantors, are subject to any material or significant restrictions on our ability to obtain funds from our subsidiaries by dividend or loan or to transfer assets from such subsidiaries, except as provided by applicable law.

Debt covenants:

The indentures governing our senior notes contain covenants that limit our ability and the ability of certain of our subsidiaries to, among other things: (i) create certain liens on assets to secure certain debt; (ii) enter into certain sale and leaseback transactions; and (iii) merge or consolidate with another company or transfer all or substantially all of our or its property, in each case as set forth in the indentures. These covenants are, however, subject to a number of important limitations and exceptions. As of March 31, 2015, we were in compliance with the covenants applicable to our senior notes.

The Credit Agreement contains certain covenants, including limitations on indebtedness, a minimum consolidated fixed charge coverage ratio of 2.50 times through maturity, and a maximum consolidated leverage ratio of 3.00 times through maturity. The consolidated leverage ratio includes a calculation of adjusted debt to earnings before interest, taxes, depreciation, amortization, rent and non-cash share-based compensation expense ("EBITDAR"). Adjusted debt includes outstanding debt, outstanding stand-by letters of credit and similar instruments, six-times rent expense and excludes any premium or discount recorded in conjunction with the issuance of long-term debt. In the event that we should default on any covenant contained within the Credit Agreement, certain actions may be taken, including, but not limited to, possible termination of commitments, immediate payment of outstanding principal amounts plus accrued interest and other amounts payable under the Credit Agreement and litigation from our lenders. We had a consolidated fixed charge coverage ratio of 5.53 times and 5.04 times as of March 31, 2015 and 2014, respectively, and a consolidated leverage ratio of 1.66 times and 1.86 times as of March 31, 2015 and 2014, respectively, remaining in compliance with all covenants related to the borrowing arrangements. Under our current financing plan, we have targeted an adjusted debt to EBITDAR ratio range of 2.00 times to 2.25 times.

The table below outlines the calculations of the consolidated fixed charge coverage ratio and consolidated leverage ratio covenants, as defined in the Credit Agreement governing the Revolving Credit Facility, for the twelve months ended March 31, 2015 and 2014 (dollars in thousands):

	For the Twelve Months Ended March 31,
	2015		2014
GAAP net income	$	817,186	$	689,823
Add: Interest expense	54,283		51,083
Rent expense	266,213		256,748
Provision for income taxes	467,700		403,450
Depreciation expense	195,812		186,526
Amortization expense (benefit)	5,866		(48		)
Non-cash share-based compensation	23,889		21,221
Non-GAAP EBITDAR	$	1,830,949	$	1,608,803
Interest expense	$	54,283	$	51,083
Capitalized interest	10,448		11,398
Rent expense	266,213		256,748
Total fixed charges	$	330,944	$	319,229
Consolidated fixed charge coverage ratio	5.53		5.04
GAAP debt	$	1,396,747	$	1,396,316
Stand-by letters of credit	50,506		54,701
Discount on senior notes	3,259		3,764
Six-times rent expense	1,597,278		1,540,488
Non-GAAP adjusted debt	$	3,047,790	$	2,995,269
Consolidated leverage ratio	1.66		1.86

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Free cash flow, the consolidated fixed charge coverage ratio and consolidated leverage ratio discussed and presented in the tables above are not derived in accordance with United States generally accepted accounting principles ("GAAP"). We do not, nor do we suggest investors should, consider such non-GAAP financial measures in isolation from, or as a substitute for, GAAP financial information. We believe that the presentation of our free cash flow, consolidated fixed charge coverage ratio and consolidated leverage ratio provides meaningful supplemental information to both management and investors and reflects the required covenants under our credit agreement. We include these items in judging our performance and believe this non-GAAP information is useful to investors as well. Material limitations of these non-GAAP measures are that such measures do not reflect actual GAAP amounts. We compensate for such limitations by presenting, in the tables above, a reconciliation to the most directly comparable GAAP measures.

Share repurchase program:

In January of 2011, our Board of Directors approved a share repurchase program. Under the program, we may, from time to time, repurchase shares of our common stock, solely through open market purchases effected through a broker dealer at prevailing market prices, based on a variety of factors such as price, corporate trading policy requirements and overall market conditions. We may increase or otherwise modify, renew, suspend or terminate the share repurchase program at any time, without prior notice. As announced on February 4, 2015, our Board of Directors approved a resolution to increase the authorization amount under our share repurchase program by an additional $500 million, resulting in a cumulative authorization amount of $5.0 billion. The additional $500 million authorization is effective for a three-year period, beginning on its announcement date.

The following table identifies shares of our common stock that have been repurchased as part of our publicly announced share repurchase program (in thousands, except per share data):

	For the Three Months Ended   March 31,
	2015		2014
Shares repurchased	650		149
Average price per share	$	207.50	$	148.18
Total investment	$	134,803	$	22,065

As of March 31, 2015, we had $645 million remaining under our share repurchase program. Subsequent to the end of the first quarter and through May 8, 2015, we repurchased an additional 0.6 million shares of our common stock under our share repurchase program, at an average price of $218.25, for a total investment of $134 million. We have repurchased a total of 47.6 million shares of our common stock under our share repurchase program since the inception of the program in January of 2011 and through May 8, 2015, at an average price of $94.29, for a total aggregate investment of $4.5 billion.

CONTRACTUAL OBLIGATIONS

There have been no material changes to the contractual obligations to which we are committed since those discussed in our Annual Report on Form 10-K for the year ended December 31, 2014.

CRITICAL ACCOUNTING ESTIMATES

The preparation of our financial statements in accordance with GAAP requires the application of certain estimates and judgments by management. Management bases its assumptions, estimates, and adjustments on historical experience, current trends and other factors believed to be relevant at the time the condensed consolidated financial statements are prepared. There have been no material changes in the critical accounting estimates since those discussed in our Annual Report on Form 10-K for the year ended December 31, 2014.

INFLATION AND SEASONALITY

We have been successful, in many cases, in reducing the effects of merchandise cost increases principally by taking advantage of supplier incentive programs, economies of scale resulting from increased volume of purchases and selective forward buying. To the extent our acquisition cost increased due to base commodity price increases industry-wide, we have typically been able to pass along these increased costs through higher retail prices for the affected products. As a result, we do not believe inflation has had a material adverse effect on our operations.

To some extent, our business is seasonal primarily as a result of the impact of weather conditions on customer buying patterns. While we have historically realized operating profits in each quarter of the year, our store sales and profits have historically been higher in the second and third quarters (April through September) than in the first and fourth quarters (October through March) of the year.

18

RECENT ACCOUNTING PRONOUNCEMENTS

In May of 2014, the Financial Accounting Standards Board (the "FASB") issued Accounting Standard Update ("ASU") No. 2014-09, "Revenue from Contracts with Customers (Topic 606)" ("ASU 2014-09"). Under ASU 2014-09, an entity is required to follow a five-step process to determine the amount of revenue to recognize when promised goods or services are transferred to customers. ASU 2014-09 offers specific accounting guidance for costs to obtain or fulfill a contract with a customer. In addition, an entity is required to disclose sufficient information to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. For public companies, ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2016, including periods within that reporting period, and can be adopted either retrospectively or as a cumulative effect adjustment at the date of adoption, with early adoption not permitted. We will adopt this guidance beginning with our first quarter ending March 31, 2017. We are in the process of evaluating the potential future impact, if any, of ASU 2014-09 on our consolidated financial position, results of operations and cash flows.

In January of 2015, the FASB issued ASU No. 2015-01, "Extraordinary and Unusual Items (Subtopic 225-20)" ("ASU 2015-01"). ASU 2015-01 eliminates from generally accepted accounting principles the concept of extraordinary items; such that, an entity will no longer need to assess whether a particular event or transaction event is extraordinary. ASU 2015-01 is effective for annual reporting periods beginning after December 15, 2015, including periods within that reporting period, and early adoption is permitted. We will adopt this guidance beginning with our first quarter ending March 31, 2016. The application of this guidance is not expected to have a material impact on our consolidated financial condition, results of operations or cash flows.

In April of 2015, the FASB issued ASU No. 2015-03, "Interest - Imputation of Interest (Subtopic 835-30)" ("ASU 2015-03"). ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability. ASU 2015-03 is effective for annual reporting periods beginning after December 15, 2015, including periods within that reporting period, requires retrospective application, and early adoption is permitted. We will adopt this guidance with our first quarter ending March 31, 2016. The application of this guidance affects classification only, and therefore, it isnot expected to have a material impact on our consolidated financial condition, results of operations or cash flows.

INTERNET ADDRESS AND ACCESS TO SEC FILINGS

Our Internet address is www.oreillyauto.com. Interested readers can access, free of charge, our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and any amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, through the Securities and Exchange Commission's website at www.sec.gov and searching with our ticker symbol "ORLY." Such reports are generally available the day they are filed. Upon request, we will furnish interested readers a paper copy of such reports free of charge.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

We are subject to interest rate risk to the extent we borrow against our unsecured revolving credit facility (the "Revolving Credit Facility") with variable interest rates based on either a Base Rate or Eurodollar Rate, as defined in the credit agreement governing the Revolving Credit Facility. As of March 31, 2015, we had no outstanding borrowings under our Revolving Credit Facility.

We invest certain of our excess cash balances in short-term, highly-liquid instruments with maturities of 90 days or less. We do not expect any material losses from our invested cash balances and we believe that our interest rate exposure is minimal. As of March 31, 2015, our cash and cash equivalents totaled $474 million.

Our market risks have not materially changed since those discussed in our Annual Report on Form 10-K for the year ended December 31, 2014.

Item 4. Controls and Procedures

EVALUATION OF DISCLOSURE CONTROLS AND PROCEDURES

As of the end of the period covered by this report, our management, under the supervision and with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of the design and operation of our disclosure controls and procedures pursuant to Rule 13a-15(b) and as defined in Rule 13a-15(e) of the Securities Exchange Act of 1934, as amended ("the Exchange Act"). Based on that evaluation, the Chief Executive Officer and the Chief Financial Officer concluded that our disclosure controls and procedures as of the end of the period covered by this report are functioning effectively to provide reasonable assurance that the information required to be disclosed by us (including our consolidated subsidiaries) in reports filed under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms and is accumulated and

19

communicated to management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

CHANGES IN INTERNAL CONTROLS

There were no changes in our internal control over financial reporting during the fiscal quarter ending March 31, 2015, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

20

PART II. OTHER INFORMATION

Item 1. Legal Proceedings

O'Reilly is currently involved in litigation incidental to the ordinary conduct of the Company's business. The Company records reserves for litigation losses in instances where a material adverse outcome is probable and the Company is able to reasonably estimate the probable loss. The Company reserves for an estimate of material legal costs to be incurred in pending litigation matters. Although the Company cannot ascertain the amount of liability that it may incur from any of these matters, it does not currently believe that, in the aggregate, these matters, taking into account applicable insurance and reserves, will have a material adverse effect on its consolidated financial position, results of operations or cash flows in a particular quarter or annual period.

As previously reported, the Company received a subpoena from the District Attorney of the County of Alameda, along with other environmental prosecutorial offices in the state of California, seeking documents and information related to the handling, storage and disposal of hazardous waste. Management has an ongoing and open dialogue with these agencies regarding this matter and is cooperating fully with the request; however, at this time a prediction of the ultimate outcome of these efforts cannot be determined.

Item 1A. Risk Factors

As of March 31, 2015, there have been no material changes in our risk factors since those discussed in our Annual Report on Form 10-K for the year ended December 31, 2014.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

There were no sales of unregistered securities during the three months ended March 31, 2015. The following table identifies all repurchases during the three months ended March 31, 2015, of any of our securities registered under Section 12 of the Securities Exchange Act of 1934, as amended, by or on behalf of us or any affiliated purchaser (in thousands, except per share amounts):

Period	Total Number of Shares Purchased	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Programs	Maximum Dollar Value of Shares that May Yet Be Purchased Under the Programs(1)
January 1, 2015, through January 31, 2015	51	$	183.20	51	$	270,009
February 1, 2015, through February 28, 2015	90	205.57		90	751,530
March 1, 2015, through March 31, 2015	509	210.27		509	$	644,533
Total as of March 31, 2015	650	$	207.50	650

⁽¹⁾  Under the Company's share repurchase program, as approved by its Board of Directors, the Company may, from time to time, repurchase shares of its common stock, solely through open market purchases effected through a broker dealer at prevailing market prices, based on a variety of factors such as price, corporate trading policy requirements and overall market conditions. The Company may increase or otherwise modify, renew, suspend or terminate the share repurchase program at any time, without prior notice. As announced on February 4, 2015, the Company's Board of Directors approved a resolution to increase the authorization amount under the share repurchase program by an additional $500 million, resulting in a cumulative authorization amount of $5.0 billion. The additional $500 million authorization is effective for a three-year period, beginning on its announcement date. The authorizations under the share repurchase program that currently has capacity are scheduled to expire on August 13, 2017, and February 4, 2018. No other share repurchase programs existed during the three months ended March 31, 2015.

Subsequent to the end of the first quarter and through May 8, 2015, the Company repurchased an additional 0.6 million shares of its common stock under our share repurchase program, at an average price of $218.25, for a total investment of $134 million. The Company has repurchased a total of 47.6 million shares of our common stock under our share repurchase program since the inception of the program in January of 2011 and through May 8, 2015, at an average price of $94.29, for a total aggregate investment of $4.5 billion.

21

Item 6. Exhibits

Exhibit No.	Description
3.1	Amended and Restated Articles of Incorporation of the Registrant, filed as Exhibit 3.1 to the Registrant's Current Report on Form 8-K dated May 9, 2013, is incorporated herein by this reference.
3.2	Amended and Restated Bylaws of the Registrant, filed as Exhibit 3.1 to the Registrant's Current Report on Form 8-K dated August 13, 2014, is incorporated herein by this reference.
31.1	Certificate of the Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
31.2	Certificate of the Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
32.1 *	Certificate of the Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, furnished herewith.
32.2 *	Certificate of the Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, furnished herewith.
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema
101.CAL	XBRL Taxonomy Extension Calculation Linkbase
101.DEF	XBRL Taxonomy Extension Definition Linkbase
101.LAB	XBRL Taxonomy Extension Label Linkbase
101.PRE	XBRL Taxonomy Extension Presentation Linkbase
*	Furnished (and not filed) herewith pursuant to Item 601 (b)(32)(ii) of Regulation S-K.

22

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	O'REILLY AUTOMOTIVE, INC.
May 8, 2015	/s/ Greg Henslee
Date	Greg Henslee
	President and Chief Executive Officer
	(Principal Executive Officer)
May 8, 2015	/s/ Thomas McFall
Date	Thomas McFall
	Executive Vice President of Finance and Chief Financial Officer
	(Principal Financial and Accounting Officer)

23

INDEX TO EXHIBITS

Exhibit No.	Description
3.1	Amended and Restated Articles of Incorporation of the Registrant, filed as Exhibit 3.1 to the Registrant's Current Report on Form 8-K dated May 9, 2013, is incorporated herein by this reference.
3.2	Amended and Restated Bylaws of the Registrant, filed as Exhibit 3.1 to the Registrant's Current Report on Form 8-K dated August 13, 2014, is incorporated herein by this reference.
31.1	Certificate of the Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
31.2	Certificate of the Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
32.1 *	Certificate of the Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, furnished herewith.
32.2 *	Certificate of the Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, furnished herewith.
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema
101.CAL	XBRL Taxonomy Extension Calculation Linkbase
101.DEF	XBRL Taxonomy Extension Definition Linkbase
101.LAB	XBRL Taxonomy Extension Label Linkbase
101.PRE	XBRL Taxonomy Extension Presentation Linkbase
*	Furnished (and not filed) herewith pursuant to Item 601 (b)(32)(ii) of Regulation S-K.

Page E-1

EX-31.1

Exhibit 31.1 - CEO Certification

O'REILLY AUTOMOTIVE, INC. AND SUBSIDIARIES

CERTIFICATIONS

I, Greg Henslee, certify that:

1. I have reviewed this report on Form 10-Q of O'Reilly Automotive, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: May 8, 2015	/s/ Greg Henslee
	Greg Henslee President and Chief Executive Officer (Principal Executive Officer)

EX-31.2

Exhibit 31.2 - CFO Certification

O'REILLY AUTOMOTIVE, INC. AND SUBSIDIARIES

CERTIFICATIONS

I, Thomas McFall, certify that:

1. I have reviewed this report on Form 10-Q of O'Reilly Automotive, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: May 8, 2015	/s/ Thomas McFall
	Thomas McFall Executive Vice President of Finance and Chief Financial Officer (Principal Financial and Accounting Officer)

EX-32.1

Exhibit 32.1 - CEO Certification

O'REILLY AUTOMOTIVE, INC. AND SUBSIDIARIES

O'REILLY AUTOMOTIVE, INC.

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Report of O'Reilly Automotive, Inc. (the "Company") on Form 10-Q for the period ended March 31, 2015, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Greg Henslee, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Greg Henslee

Greg Henslee

Chief Executive Officer

May 8, 2015

This certification is made solely for purposes of 18 U.S.C. Section 1350, and not for any other purpose.  This certification accompanies the Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2 - CFO Certification

O'REILLY AUTOMOTIVE, INC. AND SUBSIDIARIES

O'REILLY AUTOMOTIVE, INC.

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Report of O'Reilly Automotive, Inc. (the "Company") on Form 10-Q for the period ended March 31, 2015, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Thomas McFall, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Thomas McFall

Thomas McFall

Chief Financial Officer

May 8, 2015

This certification is made solely for purposes of 18 U.S.C. Section 1350, and not for any other purpose.  This certification accompanies the Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Share-Based Compensation and Benefit Plans (Profit Sharing and Savings Plan) (Narrative) (Details) (Profit Sharing And Savings Plan [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Profit Sharing And Savings Plan [Member]
Share-Based Compensation and Benefit Plans
Other employee benefit plan description	The Company sponsors a contributory profit sharing and savings plan (the "401(k) Plan") that covers substantially all employees who are at least 21 years of age and have at least six months of service. The Company makes matching contributions equal to 100% of the first 2% of each employee's wages that are contributed and 25% of the next 4% of each employee's wages that are contributed.
Profit sharing and savings plan employer discretionary contribution	$ 0	$ 0
Profit sharing and savings plan cost recognized	$ 4.2	$ 3.9

XML

Share-Based Compensation and Benefit Plans (Stock Option Narrative) (Details) (Stock Option [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Vesting of options description	The Company's stock-based incentive plans provide for the granting of stock options for the purchase of common stock of the Company to directors and certain key employees of the Company. Options are granted at an exercise price that is equal to the closing market price of the Company's common stock on the date of the grant. Director options granted under the plans expire after seven years and are fully vested after six months. Employee options granted under the plans expire after ten years and typically vest 25% per year, over four years. The Company records compensation expense for the grant date fair value of the option awards, adjusted for estimated forfeitures, evenly over the minimum required service period.
Remaining unrecognized compensation expense	$ 33.5
Weighted-average period for cost recognition	2 years 8 months 8 days
Director [Member]
Options expiration date	7 years
Vesting period	6 months
Employee Stock Option [Member]
Options expiration date	10 years
Vesting period	4 years
Option vesting rate per year	25.00%

XML

Fair Value Measurements Fair Value Measurements (Fair Value of Marketable Securities) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value Measurements
Estimated fair value of marketable securities	$ 16,656	$ 15,378
Fair value, inputs, Level 1 [Member]
Fair Value Measurements
Estimated fair value of marketable securities	16,656	15,378
Fair value, inputs, Level 2 [Member]
Fair Value Measurements
Estimated fair value of marketable securities	0	0
Fair value, inputs, Level 3 [Member]
Fair Value Measurements
Estimated fair value of marketable securities	$ 0	$ 0

XML

Earnings Per Share (Computation of Basic and Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Numerator (basic and diluted):
Net income	$ 212,864		$ 173,860
Denominator:
Denominator for basic earnings per share - weighted-average shares	101,612		106,191
Effect of stock options	1,645	[1]	1,879	[1]
Denominator for diluted earnings per share - weighted-average shares	103,257		108,070
Earnings per share - basic	$ 2.09		$ 1.64
Earnings per share - assuming dilution	$ 2.06		$ 1.61
Antidilutive stock options	278	[1]	288	[1]
Weighted-average exercise price	$ 195.90	[1]	$ 135.22	[1]

[1] See Note 6 for further discussion on the terms of the Company's share-based compensation plans.

XML

Share-Based Compensation and Benefit Plans (Stock Option Activity) (Details) (Stock Option [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Stock Option [Member]
Compensation expense for benefit plans	$ 4,997	$ 4,085
Income tax benefit from compensation expense for benefit plans	$ 1,847	$ 1,512
Weighted-average grant date fair value of options awarded	$ 51.57	$ 39.13

XML

Warranties

3 Months Ended

Mar. 31, 2015

Product Warranties Disclosures [Abstract]

Warranties

NOTE 4 – WARRANTIES

The Company provides warranties on certain merchandise it sells with warranty periods ranging from 30 days to limited lifetime warranties. The risk of loss arising from warranty claims is typically the obligation of the Company's suppliers. Certain suppliers provide upfront allowances to the Company in lieu of accepting the obligation for warranty claims. For this merchandise, when sold, the Company bears the risk of loss associated with the cost of warranty claims. Differences between supplier allowances received by the Company in lieu of warranty obligations and estimated warranty expense are recorded as an adjustment to cost of sales. Estimated warranty costs, which are recorded as obligations at the time of sale, are based on the historical failure rate of each individual product line. The Company's historical experience has been that failure rates are relatively consistent over time and that the ultimate cost of warranty claims to the Company has been driven by volume of units sold as opposed to fluctuations in failure rates or the variation of the cost of individual claims.

The Company's product warranty liabilities are included in "Other current liabilities" on the accompanying Condensed Consolidated Balance Sheets as of March 31, 2015, and December 31, 2014. The following table identifies the changes in the Company's aggregate product warranty liabilities for the three months ended March 31, 2015 (in thousands):

Balance at December 31, 2014	$	34,226
Warranty claims	(10,733		)
Warranty accruals	8,616
Balance at March 31, 2015	$	32,109

XML

Long-Term Debt (Outstanding Long-Term Debt) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Revolving Credit Facility	$ 0	$ 0
Capital leases	6,000	25,000
Total debt and capital lease obligation	1,396,747,000	1,396,640,000
Current portion of long-term debt	6,000	25,000	[1]
Long-term debt, less current portion	1,396,741,000	1,396,615,000	[1]
Senior Notes due 2021 at 4.875% [Member]
Senior notes	497,964,000	497,876,000
Senior notes, unamortized discount	2,000,000	2,100,000
Effective interest rate	4.966%
Senior Notes due 2021 at 4.625% [Member]
Senior notes	299,663,000	299,650,000
Senior notes, unamortized discount	300,000	400,000
Effective interest rate	4.648%
Senior Notes due 2022 at 3.800% [Member]
Senior notes	299,134,000	299,109,000
Senior notes, unamortized discount	900,000	900,000
Effective interest rate	3.845%
Senior Notes due 2023 at 3.850% [Member]
Senior notes	299,980,000	299,980,000
Senior notes, unamortized discount	$ 100,000	$ 100,000
Effective interest rate	3.851%

[1] The balance sheet at December 31, 2014, has been derived from the audited consolidated financial statements at that date, but does not include all of the information and footnotes required by United States generally accepted accounting principles for complete financial statements.

XML

Long-Term Debt (Senior Notes) (Details) (USD $) In Billions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 D Rate
Aggregate principle of unsecured senior notes	$ 1.4
Interest rate of notes, minimum	3.80%
Interest rate of notes, maximum	4.875%
Number of days in annual interest calculation period	360
Debt instrument covenant description	Each of the senior notes is subject to certain customary covenants, with which the Company complied as of March 31, 2015.

XML

Warranties (Product Warranty Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Product Warranties Disclosures [Abstract]
Balance at December 31, 2014	$ 34,226
Warranty claims	(10,733)
Warranty accruals	8,616
Balance at March 31, 2015	$ 32,109

XML

Share Repurchase Program (Narrative) (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	0 Months Ended	3 Months Ended		1 Months Ended	52 Months Ended
	Feb. 04, 2015	Mar. 31, 2015	Mar. 31, 2014	May 08, 2015	May 08, 2015
Share repurchase program
Increase in authorized amount	$ 500,000,000
Cumulative authorized amount	5,000,000,000
Authorization effective period	3 years
Remaining balance under share repurchase program		644,500,000
Common stock repurchased, shares		650	149
Common stock repurchased, average price per share		$ 207.50	$ 148.18
Common stock repurchased, value		134,803,000	22,065,000
Subsequent Event [Member]
Share repurchase program
Common stock repurchased, shares				600	47,600
Common stock repurchased, average price per share				$ 218.25	$ 94.29
Common stock repurchased, value				$ 133,900,000	$ 4,500,000,000

XML

Long-Term Debt

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Long-term debt

NOTE 3 – LONG-TERM DEBT

The following table identifies the amounts included in "Current portion of long-term debt" and "Long-term debt, less current portion" on the accompanying Condensed Consolidated Balance Sheets as of March 31, 2015, and December 31, 2014 (in thousands):

	March 31, 2015		December 31, 2014
Revolving Credit Facility	$	—	$	—
4.875% Senior Notes due 2021(1), effective interest rate of 4.966%	497,964		497,876
4.625% Senior Notes due 2021(2), effective interest rate of 4.648%	299,663		299,650
3.800% Senior Notes due 2022(3), effective interest rate of 3.845%	299,134		299,109
3.850% Senior Notes due 2023(4), effective interest rate of 3.851%	299,980		299,980
Capital leases	6		25
Total debt and capital lease obligations	1,396,747		1,396,640
Current portion of long-term debt	6		25
Long-term debt, less current portion	$	1,396,741	$	1,396,615

⁽¹⁾  Net of unamortized discount of $2.0 million as of March 31, 2015, and $2.1 million as of December 31, 2014.

⁽²⁾  Net of unamortized discount of $0.3 million as of March 31, 2015, and $0.4 million as of December 31, 2014.

⁽³⁾  Net of unamortized discount of $0.9 million as of March 31, 2015, and December 31, 2014.

⁽⁴⁾  Net of unamortized discount of less than $0.1 million as of March 31, 2015, and December 31, 2014.

Unsecured revolving credit facility:

On January 14, 2011, the Company entered into a credit agreement, as amended by Amendment No. 1 dated as of September 9, 2011, and as further amended by Amendment No. 2 dated as of July 2, 2013 (the "Credit Agreement"). The Credit Agreement provides for a $600 million unsecured revolving credit facility (the "Revolving Credit Facility") arranged by Bank of America, N.A., which is scheduled to mature in July of 2018. The Credit Agreement includes a $200 million sub-limit for the issuance of letters of credit and a $75 million sub-limit for swing line borrowings under the Revolving Credit Facility. As described in the Credit Agreement governing the Revolving Credit Facility, the Company may, from time to time, subject to certain conditions, increase the aggregate commitments under the Revolving Credit Facility by up to $200 million. As of March 31, 2015, and December 31, 2014, the Company had outstanding letters of credit, primarily to support obligations related to workers' compensation, general liability and other insurance policies, in the amount of $50.5 million and $47.9 million, respectively, reducing the aggregate availability under the Revolving Credit Facility by those amounts. As of March 31, 2015, and December 31, 2014, the Company had no outstanding borrowings under the Revolving Credit Facility.

Borrowings under the Revolving Credit Facility (other than swing line loans) bear interest, at the Company's option, at the Base Rate or Eurodollar Rate (both as defined in the Credit Agreement) plus an applicable margin. Swing line loans made under the Revolving Credit Facility bear interest at the Base Rate plus the applicable margin for Base Rate loans. In addition, the Company pays a facility fee on the aggregate amount of the commitments in an amount equal to a percentage of such commitments. The interest rate margins and facility fee are based upon the better of the ratings assigned to the Company's debt by Moody's Investor Service, Inc. and Standard & Poor's Ratings Services, subject to limited exceptions. As of March 31, 2015, based upon the Company's credit ratings, its margin for Base Rate loans was 0.000%, its margin for Eurodollar Rate loans was 0.875% and its facility fee was 0.125%.

The Credit Agreement contains certain covenants, including limitations on indebtedness, a minimum consolidated fixed charge coverage ratio of 2.50 times through maturity, and a maximum consolidated leverage ratio of 3.00 times through maturity. The consolidated leverage ratio includes a calculation of adjusted debt to earnings before interest, taxes, depreciation, amortization, rent and non-cash share-based compensation expense. Adjusted debt includes outstanding debt, outstanding stand-by letters of credit and similar instruments, six-times rent expense and excludes any premium or discount recorded in conjunction with the issuance of long-term debt. In the event that the Company should default on any covenant contained within the Credit Agreement, certain actions may be taken, including, but not limited to, possible termination of commitments, immediate payment of outstanding principal amounts plus accrued interest and other amounts payable under the Credit Agreement and litigation from lenders.As of March 31, 2015, the Company remained in compliance with all covenants under the Credit Agreement.

Senior notes:

The Company has issued $1.4 billion aggregate principal amount of unsecured senior notes due between 2021 and 2023 with United Missouri Bank, N.A. as trustee. Interest on the senior notes, ranging from 3.800% to 4.875%, is payable biannually and is computed on the basis of a 360-day year.

The senior notes are guaranteed on a senior unsecured basis by each of the Company's subsidiaries ("Subsidiary Guarantors") that incurs or guarantees obligations under the Company's Credit Agreement or under other credit facility or capital markets debt of the Company's or any of the Company's Subsidiary Guarantors. The guarantees are joint and several and full and unconditional, subject to certain customary automatic release provisions, including release of the Subsidiary Guarantor's guarantee under the Company's Credit Agreement and certain other debt, or, in certain circumstances, the sale or other disposition of a majority of the voting power of the capital interest in, or of all or substantially all of the property of, the Subsidiary Guarantor.  Each of the Subsidiary Guarantors is 100% owned, directly or indirectly, by the Company and the Company has no independent assets or operations other than those of its subsidiaries. The only direct or indirect subsidiaries of the Company that would not be Subsidiary Guarantors would be minor subsidiaries. Neither the Company, nor any of its Subsidiary Guarantors, is subject to any material or significant restrictions on the Company's ability to obtain funds from its subsidiaries by dividend or loan or to transfer assets from such subsidiaries, except as provided by applicable law. Each of the senior notes is subject to certain customary covenants, with which the Company complied as of March 31, 2015.

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Share Repurchase Program (Schedule Of Shares Repurchased) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Proceeds from (Repurchase of) Equity [Abstract]
Shares repurchased	650	149
Average price per share	$ 207.50	$ 148.18
Total investment	$ 134,803	$ 22,065

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Share-Based Compensation and Benefit Plans (Nonqualified Deferred Compensation Plan) (Narrative) (Details) (Nonqualified Deferred Compensation Plan [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Nonqualified Deferred Compensation Plan [Member]
Share-Based Compensation and Benefit Plans
Deferred compensation plan description	The Company sponsors a nonqualified deferred compensation plan (the "Deferred Compensation Plan") for highly compensated employees whose contributions to the 401(k) Plan are limited due to the application of the annual limitations under the Internal Revenue Code. The Deferred Compensation Plan provides these employees with the opportunity to defer compensation that was precluded under the Company's 401(k) Plan due to the annual limitations, including salary and incentive based compensation, which is then matched by the Company using the same formula as the 401(k) Plan.
Deferred compensation plan obligation	$ 16.7		$ 15.4
Deferred compensation plan cost recognized	$ 0.1	$ 0.1

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Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents	$ 473,646	$ 250,560	[1]
Accounts receivable, net	162,020	143,900	[1]
Amounts receivable from suppliers	69,545	69,311	[1]
Inventory	2,527,982	2,554,789	[1]
Other current assets	40,928	48,418	[1]
Total current assets	3,274,121	3,066,978	[1]
Property and equipment, at cost	4,080,350	3,993,509	[1]
Less: accumulated depreciation and amortization	1,381,502	1,334,949	[1]
Net property and equipment	2,698,848	2,658,560	[1]
Notes receivable, less current portion	12,414	13,349	[1]
Goodwill	756,384	756,384	[1]
Other assets, net	43,943	45,030	[1]
Total assets	6,785,710	6,540,301	[1]
Liabilities and shareholders' equity
Accounts payable	2,470,749	2,417,167	[1]
Self-insurance reserves	67,676	64,882	[1]
Accrued payroll	75,059	78,442	[1]
Accrued benefits and withholdings	42,413	62,946	[1]
Deferred income taxes	16,651	17,258	[1]
Income taxes payable	78,939	0	[1]
Other current liabilities	200,888	189,836	[1]
Current portion of long-term debt	6	25	[1]
Total current liabilities	2,952,381	2,830,556	[1]
Long-term debt, less current portion	1,396,741	1,396,615	[1]
Deferred income taxes	81,330	85,164	[1]
Other liabilities	211,758	209,548	[1]
Shareholders' equity:
Common stock, $0.01 par value: Authorized shares - 245,000,000 Issued and outstanding shares - 101,347,744 as of March 31, 2015, and 101,602,935 as of December 31, 2014	1,013	1,016	[1]
Additional paid-in capital	1,234,133	1,194,929	[1]
Retained earnings	908,354	822,473	[1]
Total shareholders' equity	2,143,500	2,018,418	[1]
Total liabilities and shareholders' equity	$ 6,785,710	$ 6,540,301	[1]

[1] The balance sheet at December 31, 2014, has been derived from the audited consolidated financial statements at that date, but does not include all of the information and footnotes required by United States generally accepted accounting principles for complete financial statements.

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Basis of Presentation

3 Months Ended

Mar. 31, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of presentation

NOTE 1 - BASIS OF PRESENTATION

The accompanying unaudited condensed consolidated financial statements of O'Reilly Automotive, Inc. and its subsidiaries (the "Company" or "O'Reilly") have been prepared in accordance with United States generally accepted accounting principles ("U.S. GAAP") for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the three months ended March 31, 2015, are not necessarily indicative of the results that may be expected for the year ended December 31, 2015. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2014.

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Share-Based Compensation and Benefit Plans (Summary Of Stock Options) (Details) (Stock Option [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Stock Option [Member]
Outstanding at December 31, 2014, shares	4,065
Outstanding at December 31, 2014, weighted-average exercise price	$ 64.57
Granted, shares	209
Granted, weighted-average exercise price	$ 200.96
Exercised, shares	(377)
Exercised, weighted-average exercise price	$ 46.30
Forfeited, shares	(28)
Forfeited, weighted-average exercise price	$ 86.31
Outstanding at March 31, 2015, shares	3,869
Outstanding at March 31, 2015, weighted-average exercise price	$ 73.58
Exercisable at March 31, 2015, shares	2,566
Exercisable at March 31, 2015, weighted-average exercise price	$ 48.16

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Share-Based Compensation and Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2015

Stock Option [Member]

Summary of stock options

	Shares (in thousands)		Weighted-Average Exercise Price
Outstanding at December 31, 2014	4,065		$	64.57
Granted	209		200.96
Exercised	(377	)	46.30
Forfeited	(28	)	86.31
Outstanding at March 31, 2015	3,869		$	73.58
Exercisable at March 31, 2015	2,566		$	48.16

Black-Scholes option pricing model

	For the Three Months Ended   March 31,
	2015			2014
Risk free interest rate	1.57	%		1.74	%
Expected life	6.1		Years	5.9		Years
Expected volatility	22.4	%		25.5	%
Expected dividend yield	—	%		—	%

Summary of activity of share-based compensation

	For the Three Months Ended   March 31,
	2015		2014
Compensation expense for stock options awarded	$	4,997	$	4,085
Income tax benefit from compensation expense related to stock options	1,847		1,512
Weighted-average grant-date fair value of options awarded	$	51.57	$	39.13

Restricted Stock [Member] | Employee Stock Purchase Plan [Member]

Summary of activity of share-based compensation

	For the Three Months Ended   March 31,
	2015		2014
Compensation expense for shares issued under the ESPP	$	489	$	438
Income tax benefit from compensation expense related to shares issued under the ESPP	181		162
Compensation expense for restricted shares awarded	404		573
Income tax benefit from compensation expense related to restricted awards	$	149	$	212

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Share-Based Compensation and Benefit Plans (Black-Scholes Option Pricing Model) (Details) (Stock Option [Member])	3 Months Ended
	Mar. 31, 2015 Rate	Mar. 31, 2014 Rate
Stock Option [Member]
Risk-free interest rate	1.57%	1.74%
Expected life	6 years 1 month 6 days	5 years 10 months 15 days
Expected volatility	22.40%	25.50%
Expected dividend yield	0.00%	0.00%

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Fair Value Measurements (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Appreciation in fair value of marketable securities	$ 0.4
Non-financial assets and liabilities measured at fair value on a nonrecurring basis	$ 0	$ 0

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Fair Value Measurements

3 Months Ended

Mar. 31, 2015

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]

Fair value measurements

NOTE 2 – FAIR VALUE MEASUREMENTS

The Company uses the fair value hierarchy, which prioritizes the inputs used to measure the fair value of certain of its financial instruments. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). The Company uses the income and market approaches to determine the fair value of its assets and liabilities. The three levels of the fair value hierarchy are set forth below:

• Level 1 – Quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity can access at the measurement date.

• Level 2 – Inputs other than quoted prices in active markets included within Level 1 that are observable for the asset or liability, either directly or indirectly.

• Level 3 – Unobservable inputs for the asset or liability.

Financial assets and liabilities measured at fair value on a recurring basis:

The carrying amount of the Company's marketable securities is included in "Other assets, net" on the accompanying Condensed Consolidated Balance Sheets as of March 31, 2015, and December 31, 2014. The Company recorded $0.4 million of appreciation in fair value related to its marketable securities, which is included in "Other income (expense)" on the accompanying Condensed Consolidated Statements of Income, for the three months ended March 31, 2015.

The table below identifies the estimated fair value of the Company's marketable securities, determined by reference to quoted market prices (Level 1), as of March 31, 2015, and December 31, 2014 (in thousands):

	Quoted Prices in Active Markets for Identical Instruments (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)				Total
	March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014
Marketable securities	$	16,656	$	15,378	$	—	$	—	$	—	$	—	$	16,656	$	15,378

Non-financial assets and liabilities measured at fair value on a nonrecurring basis:

Certain long-lived non-financial assets and liabilities may be required to be measured at fair value on a nonrecurring basis in certain circumstances, including when there is evidence of impairment. These non-financial assets and liabilities may include assets acquired in a business combination or property and equipment that are determined to be impaired. As of March 31, 2015, and December 31, 2014, the Company did not have any non-financial assets or liabilities that had been measured at fair value subsequent to initial recognition.

Fair value of financial instruments:

The carrying amounts of the Company's senior notes are included in "Long-term debt, less current portion" on the accompanying Condensed Consolidated Balance Sheets as of March 31, 2015, and December 31, 2014. See Note 3 for further discussion on the Company's senior notes.

The table below identifies the estimated fair value of the Company's senior notes, using the market approach. The fair values as of March 31, 2015, and December 31, 2014, were determined by reference to quoted market prices of the same or similar instruments (Level 2) (in thousands):

	March 31, 2015				December 31, 2014
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
4.875% Senior Notes due 2021	$	497,964	$	558,055	$	497,876	$	566,700
4.625% Senior Notes due 2021	299,663		331,769		299,650		337,222
3.800% Senior Notes due 2022	299,134		314,468		299,109		310,749
3.850% Senior Notes due 2023	$	299,980	$	314,806	$	299,980	$	311,656

The accompanying Condensed Consolidated Balance Sheets include other financial instruments, including cash and cash equivalents, accounts receivable, amounts receivable from suppliers and accounts payable. Due to the short-term nature of these financial instruments, the Company believes that the carrying values of these instruments approximate their fair values.

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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	245,000,000	245,000,000
Common stock, shares issued	101,347,744	101,602,935
Common stock, shares outstanding	101,347,744	101,602,935

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Recent Accounting Pronouncements Recent Accounting Pronouncements (Policies)

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Recent accounting pronouncements, policy

In May of 2014, the Financial Accounting Standards Board (the "FASB") issued Accounting Standard Update ("ASU") No. 2014-09, "Revenue from Contracts with Customers (Topic 606)" ("ASU 2014-09"). Under ASU 2014-09, an entity is required to follow a five-step process to determine the amount of revenue to recognize when promised goods or services are transferred to customers. ASU 2014-09 offers specific accounting guidance for costs to obtain or fulfill a contract with a customer. In addition, an entity is required to disclose sufficient information to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. For public companies, ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2016, including periods within that reporting period, and can be adopted either retrospectively or as a cumulative effect adjustment at the date of adoption, with early adoption not permitted. The Company will adopt this guidance beginning with its first quarter ending March 31, 2017. The Company is in the process of evaluating the potential future impact, if any, of ASU 2014-09 on its consolidated financial position, results of operations and cash flows.

In January of 2015, the FASB issued ASU No. 2015-01, "Extraordinary and Unusual Items (Subtopic 225-20)" ("ASU 2015-01"). ASU 2015-01 eliminates from generally accepted accounting principles the concept of extraordinary items; such that, an entity will no longer need to assess whether a particular event or transaction event is extraordinary. ASU 2015-01 is effective for annual reporting periods beginning after December 15, 2015, including periods within that reporting period, and early adoption is permitted. The Company will adopt this guidance beginning with its first quarter ending March 31, 2016. The application of this guidance is not expected to have a material impact on the Company's consolidated financial condition, results of operations or cash flows.

In April of 2015, the FASB issued ASU No. 2015-03, "Interest - Imputation of Interest (Subtopic 835-30)" ("ASU 2015-03"). ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability. ASU 2015-03 is effective for annual reporting periods beginning after December 15, 2015, including periods within that reporting period, requires retrospective application, and early adoption is permitted. The Company will adopt this guidance with its first quarter ending March 31, 2016. The application of this guidance affects classification only, and therefore, it is not expected to have a material impact on the Company's consolidated financial condition, results of operations or cashflows.

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Document and Entity Information	3 Months Ended
	Mar. 31, 2015	May 04, 2015
Document and Entity Information
Document type	10-Q
Amendment flag	false
Document period end date	Mar. 31, 2015
Document fiscal year focus	2015
Current fiscal year end date	--12-31
Document fiscal period focus	Q1
Entity registrant name	O REILLY AUTOMOTIVE INC
Entity central index key	0000898173
Entity filer category	Large Accelerated Filer
Entity common stock, shares outstanding		100,989,965

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2015

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]

Valuation of marketable securities

	Quoted Prices in Active Markets for Identical Instruments (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)				Total
	March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014
Marketable securities	$	16,656	$	15,378	$	—	$	—	$	—	$	—	$	16,656	$	15,378

Valuation of senior notes

	March 31, 2015				December 31, 2014
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
4.875% Senior Notes due 2021	$	497,964	$	558,055	$	497,876	$	566,700
4.625% Senior Notes due 2021	299,663		331,769		299,650		337,222
3.800% Senior Notes due 2022	299,134		314,468		299,109		310,749
3.850% Senior Notes due 2023	$	299,980	$	314,806	$	299,980	$	311,656

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Condensed Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Sales	$ 1,901,903	$ 1,727,943
Cost of goods sold, including warehouse and distribution expenses	914,944	850,227
Gross profit	986,959	877,716
Selling, general and administrative expenses	636,586	590,596
Operating income	350,373	287,120
Other income (expense):
Interest expense	(14,402)	(13,409)
Interest income	580	631
Other, net	1,113	618
Total other expense	(12,709)	(12,160)
Income before income taxes	337,664	274,960
Provision for income taxes	124,800	101,100
Net income	$ 212,864	$ 173,860
Earnings per share-basic:
Earnings per share - basic	$ 2.09	$ 1.64
Weighted-average common shares outstanding - basic	101,612	106,191
Earnings per share-assuming dilution:
Earnings per share - assuming dilution	$ 2.06	$ 1.61
Weighted-average common shares outstanding - assuming dilution	103,257	108,070

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Earnings Per Share

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Earnings per share

NOTE 7 – EARNINGS PER SHARE

The following table illustrates the computation of basic and diluted earnings per share for the three months ended March 31, 2015 and 2014 (in thousands, except per share data):

	For the Three Months Ended   March 31,
	2015		2014
Numerator (basic and diluted):
Net income	$	212,864	$	173,860
Denominator:
Denominator for basic earnings per share - weighted-average shares	101,612		106,191
Effect of stock options (1)	1,645		1,879
Denominator for diluted earnings per share - weighted-average shares	103,257		108,070
Earnings per share:
Earnings per share-basic	$	2.09	$	1.64
Earnings per share-assuming dilution	$	2.06	$	1.61
Antidilutive potential common shares not included in the calculation of diluted earnings per share:
Stock options (1)	278		288
Weighted-average exercise price per share of antidilutive stock options (1)	$	195.90	$	135.22

⁽¹⁾  See Note 6 for further discussion on the terms of the Company's share-based compensation plans.

For the three months ended March 31, 2015 and 2014, the computation of diluted earnings per share did not include certain securities. These securities represent underlying stock options not included in the computation of diluted earnings per share, because the inclusion of such equity awards would have been antidilutive.

Subsequent to the end of the first quarter and through May 8, 2015, the Company repurchased 0.6 million shares of its common stock, at an average price of $218.25, for a total investment of $133.9 million.

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Share-Based Compensation and Benefit Plans

3 Months Ended

Mar. 31, 2015

Employee Benefits and Share-based Compensation [Abstract]

Share-based compensation and benefit plans

NOTE 6 – SHARE-BASED COMPENSATION AND BENEFIT PLANS

The Company recognizes share-based compensation expense based on the fair value of the grants, awards or shares at the time of the grant, award or issuance. Share-based compensation includes stock option awards issued under the Company's employee incentive plans and director stock plan, restricted stock awarded under the Company's employee incentive plans, performance incentive plan and director stock plan, stock issued through the Company's employee stock purchase plan and stock awarded to employees through other benefit programs.

Stock options:

The Company's stock-based incentive plans provide for the granting of stock options for the purchase of common stock of the Company to directors and certain key employees of the Company. Options are granted at an exercise price that is equal to the closing market price of the Company's common stock on the date of the grant. Director options granted under the plans expire after seven years and are fully vested after six months. Employee options granted under the plans expire after ten years and typically vest 25% per year, over four years. The Company records compensation expense for the grant date fair value of the option awards, adjusted for estimated forfeitures, evenly over the minimum required service period.

The table below identifies stock option activity under these plans during the three months ended March 31, 2015:

	Shares (in thousands)		Weighted-Average Exercise Price
Outstanding at December 31, 2014	4,065		$	64.57
Granted	209		200.96
Exercised	(377	)	46.30
Forfeited	(28	)	86.31
Outstanding at March 31, 2015	3,869		$	73.58
Exercisable at March 31, 2015	2,566		$	48.16

The fair value of each stock option award is estimated on the date of the grant using the Black-Scholes option pricing model. The Black-Scholes model requires the use of assumptions, including the risk free rate, expected life, expected volatility and expected dividend yield.

• Risk-free interest rate – The United States Treasury rates in effect at the time the options are granted for the options' expected life.

•

• Expected life - Represents the period of time that options granted are expected to be outstanding. The Company uses historical experience to estimate the expected life of options granted.

• Expected volatility – Measure of the amount by which the Company's stock price has historically fluctuated.

• Expected dividend yield – The Company has not paid, nor does it have plans in the foreseeable future to pay, any dividends.

The table below identifies the weighted-average assumptions used for grants awarded during the three months ended March 31, 2015 and 2014:

	For the Three Months Ended   March 31,
	2015			2014
Risk free interest rate	1.57	%		1.74	%
Expected life	6.1		Years	5.9		Years
Expected volatility	22.4	%		25.5	%
Expected dividend yield	—	%		—	%

The Company's forfeiture rate is the estimated percentage of options awarded that are expected to be forfeited or canceled prior to becoming fully vested. The Company's estimate is evaluated periodically and is based upon historical experience at the time of evaluation and reduces expense ratably over the vesting period or the minimum required service period.

The following table summarizes activity related to stock options awarded by the Company for the three months ended March 31, 2015 and 2014 (in thousands, except per share data):

	For the Three Months Ended   March 31,
	2015		2014
Compensation expense for stock options awarded	$	4,997	$	4,085
Income tax benefit from compensation expense related to stock options	1,847		1,512
Weighted-average grant-date fair value of options awarded	$	51.57	$	39.13

The remaining unrecognized compensation expense related to unvested stock option awards at March 31, 2015, was $33.5 million and the weighted-average period of time over which this cost will be recognized is 2.7 years.

Other share-based compensation plans:

The Company sponsors other share-based compensation plans: an employee stock purchase plan (the "ESPP"), which permits all eligible employees to purchase shares of the Company’s common stock at 85% of the fair market value; a performance incentive plan, which provides for the award of shares of restricted stock to its corporate and senior management that vest evenly over a three-year period and are held in escrow until such vesting has occurred; and a director stock plan, which provides for the award of shares of restricted stock to the Company's independent directors that vest evenly over a three-year period and are held in escrow until such vesting has occurred. The fair value of shares awarded under these plans is based on the closing market price of the Company's common stock on the date of award, and compensation expense is recorded evenly over the minimum required service period.

The table below summarizes activity related to the Company's other share-based compensation plans for the three months ended March 31, 2015 and 2014 (in thousands):

	For the Three Months Ended   March 31,
	2015		2014
Compensation expense for shares issued under the ESPP	$	489	$	438
Income tax benefit from compensation expense related to shares issued under the ESPP	181		162
Compensation expense for restricted shares awarded	404		573
Income tax benefit from compensation expense related to restricted awards	$	149	$	212

Profit sharing and savings plan:

The Company sponsors a contributory profit sharing and savings plan (the "401(k) Plan") that covers substantially all employees who are at least 21 years of age and have at least six months of service. The Company makes matching contributions equal to 100% of the first 2% of each employee's wages that are contributed and 25% of the next 4% of each employee's wages that are contributed. An employee must be employed on December 31 to receive that year's Company matching contribution, with the matching contribution funded annually in the January following the year in which the matching contribution was earned. The Company may also make additional discretionary profit sharing contributions to the plan on an annual basis as determined by the Board of Directors. The Company did not make any discretionary contributions to the 401(k) Plan during the three months ended March 31, 2015 or 2014. The Company expensed matching contributions under the 401(k) Plan in the amounts of $4.2 million and $3.9 million for the three months ended March 31, 2015 and 2014, respectively.

Nonqualified deferred compensation plan:

The Company sponsors a nonqualified deferred compensation plan (the "Deferred Compensation Plan") for highly compensated employees whose contributions to the 401(k) Plan are limited due to the application of the annual limitations under the Internal Revenue Code. The Deferred Compensation Plan provides these employees with the opportunity to defer compensation that was precluded under the Company's 401(k) Plan due to the annual limitations, including salary and incentive based compensation, which is then matched by the Company using the same formula as the 401(k) Plan. An employee must be employed on December 31 to receive that year's Company matching contribution, with the matching contribution funded annually in the January following the year in which the matching contribution was earned. In the event of bankruptcy, the assets of this plan are available to satisfy the claims of general creditors. The Company has an unsecured obligation to pay, in the future, the value of the deferred compensation and Company match adjusted to reflect the performance, whether positive or negative, of selected investment measurement options chosen by each participant during the deferral period. The liability for compensation deferred under the Deferred Compensation Plan was $16.7 million and $15.4 million as of March 31, 2015, and December 31, 2014, respectively, and was included within "Other liabilities" on the Condensed Consolidated Balance Sheets. The Company expensed matching contributions under the Deferred Compensation Plan in the amounts of less than $0.1 million and $0.1 million for the three months ended March 31, 2015 and 2014, respectively.

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Computation of basic and diluted earnings per share

	For the Three Months Ended   March 31,
	2015		2014
Numerator (basic and diluted):
Net income	$	212,864	$	173,860
Denominator:
Denominator for basic earnings per share - weighted-average shares	101,612		106,191
Effect of stock options (1)	1,645		1,879
Denominator for diluted earnings per share - weighted-average shares	103,257		108,070
Earnings per share:
Earnings per share-basic	$	2.09	$	1.64
Earnings per share-assuming dilution	$	2.06	$	1.61
Antidilutive potential common shares not included in the calculation of diluted earnings per share:
Stock options (1)	278		288
Weighted-average exercise price per share of antidilutive stock options (1)	$	195.90	$	135.22

⁽¹⁾  See Note 6 for further discussion on the terms of the Company's share-based compensation plans.

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Long-Term Debt (Tables)

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Outstanding long-term debt and capital lease obligations

	March 31, 2015		December 31, 2014
Revolving Credit Facility	$	—	$	—
4.875% Senior Notes due 2021(1), effective interest rate of 4.966%	497,964		497,876
4.625% Senior Notes due 2021(2), effective interest rate of 4.648%	299,663		299,650
3.800% Senior Notes due 2022(3), effective interest rate of 3.845%	299,134		299,109
3.850% Senior Notes due 2023(4), effective interest rate of 3.851%	299,980		299,980
Capital leases	6		25
Total debt and capital lease obligations	1,396,747		1,396,640
Current portion of long-term debt	6		25
Long-term debt, less current portion	$	1,396,741	$	1,396,615

⁽¹⁾  Net of unamortized discount of $2.0 million as of March 31, 2015, and $2.1 million as of December 31, 2014.

⁽²⁾  Net of unamortized discount of $0.3 million as of March 31, 2015, and $0.4 million as of December 31, 2014.

⁽³⁾  Net of unamortized discount of $0.9 million as of March 31, 2015, and December 31, 2014.

⁽⁴⁾  Net of unamortized discount of less than $0.1 million as of March 31, 2015, and December 31, 2014.

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Fair Value Measurements (Policies)

3 Months Ended

Mar. 31, 2015

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]

Fair value of financial instruments, policy

The Company uses the fair value hierarchy, which prioritizes the inputs used to measure the fair value of certain of its financial instruments. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). The Company uses the income and market approaches to determine the fair value of its assets and liabilities.

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Legal Matters

3 Months Ended

Mar. 31, 2015

Loss Contingency [Abstract]

Legal matters

NOTE 8 – LEGAL MATTERS

O'Reilly is currently involved in litigation incidental to the ordinary conduct of the Company's business. The Company records reserves for litigation losses in instances where a material adverse outcome is probable and the Company is able to reasonably estimate the probable loss. The Company reserves for an estimate of material legal costs to be incurred in pending litigation matters. Although the Company cannot ascertain the amount of liability that it may incur from any of these matters, it does not currently believe that, in the aggregate, these matters, taking into account applicable insurance and reserves, will have a material adverse effect on its consolidated financial position, results of operations or cash flows in a particular quarter or annual period.

As previously reported, the Company received a subpoena from the District Attorney of the County of Alameda, along with other environmental prosecutorial offices in the state of California, seeking documents and information related to the handling, storage and disposal of hazardous waste. Management has an ongoing and open dialogue with these agencies regarding this matter and is cooperating fully with the request; however, at this time a prediction of the ultimate outcome of these efforts cannot be determined.

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Recent Accounting Pronouncements

3 Months Ended

Mar. 31, 2015

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Recent accounting pronouncements

NOTE 9 - RECENT ACCOUNTING PRONOUNCEMENTS

In May of 2014, the Financial Accounting Standards Board (the "FASB") issued Accounting Standard Update ("ASU") No. 2014-09, "Revenue from Contracts with Customers (Topic 606)" ("ASU 2014-09"). Under ASU 2014-09, an entity is required to follow a five-step process to determine the amount of revenue to recognize when promised goods or services are transferred to customers. ASU 2014-09 offers specific accounting guidance for costs to obtain or fulfill a contract with a customer. In addition, an entity is required to disclose sufficient information to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. For public companies, ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2016, including periods within that reporting period, and can be adopted either retrospectively or as a cumulative effect adjustment at the date of adoption, with early adoption not permitted. The Company will adopt this guidance beginning with its first quarter ending March 31, 2017. The Company is in the process of evaluating the potential future impact, if any, of ASU 2014-09 on its consolidated financial position, results of operations and cash flows.

In January of 2015, the FASB issued ASU No. 2015-01, "Extraordinary and Unusual Items (Subtopic 225-20)" ("ASU 2015-01"). ASU 2015-01 eliminates from generally accepted accounting principles the concept of extraordinary items; such that, an entity will no longer need to assess whether a particular event or transaction event is extraordinary. ASU 2015-01 is effective for annual reporting periods beginning after December 15, 2015, including periods within that reporting period, and early adoption is permitted. The Company will adopt this guidance beginning with its first quarter ending March 31, 2016. The application of this guidance is not expected to have a material impact on the Company's consolidated financial condition, results of operations or cash flows.

In April of 2015, the FASB issued ASU No. 2015-03, "Interest - Imputation of Interest (Subtopic 835-30)" ("ASU 2015-03"). ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability. ASU 2015-03 is effective for annual reporting periods beginning after December 15, 2015, including periods within that reporting period, requires retrospective application, and early adoption is permitted. The Company will adopt this guidance with its first quarter ending March 31, 2016. The application of this guidance affects classification only, and therefore, it is not expected to have a material impact on the Company's consolidated financial condition, results of operations or cashflows.

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Warranties (Policies)

3 Months Ended

Mar. 31, 2015

Product Warranties Disclosures [Abstract]

Warranties, policy

The Company provides warranties on certain merchandise it sells with warranty periods ranging from 30 days to limited lifetime warranties. The risk of loss arising from warranty claims is typically the obligation of the Company's suppliers. Certain suppliers provide upfront allowances to the Company in lieu of accepting the obligation for warranty claims. For this merchandise, when sold, the Company bears the risk of loss associated with the cost of warranty claims. Differences between supplier allowances received by the Company in lieu of warranty obligations and estimated warranty expense are recorded as an adjustment to cost of sales. Estimated warranty costs, which are recorded as obligations at the time of sale, are based on the historical failure rate of each individual product line. The Company's historical experience has been that failure rates are relatively consistent over time and that the ultimate cost of warranty claims to the Company has been driven by volume of units sold as opposed to fluctuations in failure rates or the variation of the cost of individual claims.

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Share-Based Compensation and Benefit Plans (Other Share-Based Compensation) (Narrative) (Details)	3 Months Ended
	Mar. 31, 2015 Rate
Employee Stock Purchase Plan [Member]
Other employee benefit plan description	an employee stock purchase plan (the "ESPP"), which permits all eligible employees to purchase shares of the Company’s common stock at 85% of the fair market value
Employee stock purchase plan stock purchase percentage	85.00%
Restricted Stock [Member]
Other employee benefit plan description	a performance incentive plan, which provides for the award of shares of restricted stock to its corporate and senior management that vest evenly over a three-year period and are held in escrow until such vesting has occurred; and a director stock plan, which provides for the award of shares of restricted stock to the Company's independent directors that vest evenly over a three-year period and are held in escrow until such vesting has occurred. The fair value of shares awarded under these plans is based on the closing market price of the Company's common stock on the date of award, and compensation expense is recorded evenly over the minimum required service period
Vesting period	3 years

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Share Repurchase Program (Tables)

3 Months Ended

Mar. 31, 2015

Proceeds from (Repurchase of) Equity [Abstract]

Schedule of shares repurchased

	For the Three Months Ended   March 31,
	2015		2014
Shares repurchased	650		149
Average price per share	$	207.50	$	148.18
Total investment	$	134,803	$	22,065

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Fair Value Measurements (Fair Value of Senior Notes) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Senior Notes due 2021 at 4.875% [Member]
Carrying amount of senior notes	$ 497,964	$ 497,876
Estimated fair value of senior notes	558,055	566,700
Senior Notes due 2021 at 4.625% [Member]
Carrying amount of senior notes	299,663	299,650
Estimated fair value of senior notes	331,769	337,222
Senior Notes due 2022 at 3.800% [Member]
Carrying amount of senior notes	299,134	299,109
Estimated fair value of senior notes	314,468	310,749
Senior Notes due 2023 at 3.850% [Member]
Carrying amount of senior notes	299,980	299,980
Estimated fair value of senior notes	$ 314,806	$ 311,656

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Earnings Per Share (Narrative) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		1 Months Ended	52 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	May 08, 2015	May 08, 2015
Earnings Per Share
Common stock repurchased, shares	650	149
Common stock repurchased, average price per share	$ 207.50	$ 148.18
Common stock repurchased, value	$ 134,803	$ 22,065
Subsequent Event [Member]
Earnings Per Share
Common stock repurchased, shares			600	47,600
Common stock repurchased, average price per share			$ 218.25	$ 94.29
Common stock repurchased, value			$ 133,900	$ 4,500,000

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Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Operating activities:
Net income	$ 212,864		$ 173,860
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property, equipment and intangibles	54,950		47,477
Amortization of debt discount and issuance costs	525		520
Excess tax benefit from stock options exercised	(21,188)		(17,850)
Deferred income taxes	(4,441)		(3,796)
Share-based compensation programs	5,890		5,096
Other	1,355		1,526
Changes in operating assets and liabilities:
Accounts receivable	(19,867)		(13,016)
Inventory	26,807		(21,994)
Accounts payable	53,582		104,376
Income taxes payable	117,221		69,922
Other	(21,673)		(572)
Net cash provided by operating activities	406,025		345,549
Investing activities:
Purchases of property and equipment	(91,140)		(83,085)
Proceeds from sale of property and equipment	658		287
Payments received on notes receivable	935		900
Net cash used in investing activities	(89,547)		(81,898)
Financing activities:
Principal payments on capital leases	(19)		(18)
Repurchases of common stock	(134,813)		(22,067)
Excess tax benefit from stock options exercised	21,188		17,850
Net proceeds from issuance of common stock	20,252		21,097
Net cash (used in) provided by financing activities	(93,392)		16,862
Net increase in cash and cash equivalents	223,086		280,513
Cash and cash equivalents at beginning of the period	250,560	[1]	231,318
Cash and cash equivalents at end of the period	473,646		511,831
Supplemental disclosures of cash flow information:
Income taxes paid	8,675		33,331
Interest paid, net of capitalized interest	$ 23,435		$ 22,419

[1] The balance sheet at December 31, 2014, has been derived from the audited consolidated financial statements at that date, but does not include all of the information and footnotes required by United States generally accepted accounting principles for complete financial statements.

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Share Repurchase Program

3 Months Ended

Mar. 31, 2015

Proceeds from (Repurchase of) Equity [Abstract]

Share repurchase program

NOTE 5 – SHARE REPURCHASE PROGRAM

In January of 2011, the Company's Board of Directors approved a share repurchase program. Under the program, the Company may, from time to time, repurchase shares of its common stock, solely through open market purchases effected through a broker dealer at prevailing market prices, based on a variety of factors such as price, corporate trading policy requirements and overall market conditions. The Company and its Board of Directors may increase or otherwise modify, renew, suspend or terminate the share repurchase program at any time, without prior notice. As announced on February 4, 2015, the Company's Board of Directors approved a resolution to increase the authorization amount under the share repurchase program by an additional $500 million, resulting in a cumulative authorization amount of $5.0 billion. The additional $500 million authorization is effective for a three-year period, beginning on its announcement date.

The following table identifies shares of the Company's common stock that have been repurchased as part of the Company's publicly announced share repurchase program (in thousands, except per share data):

	For the Three Months Ended   March 31,
	2015		2014
Shares repurchased	650		149
Average price per share	$	207.50	$	148.18
Total investment	$	134,803	$	22,065

As of March 31, 2015, the Company had $644.5 million remaining under its share repurchase program. Subsequent to the end of the first quarter and through May 8, 2015, the Company repurchased an additional 0.6 million shares of its common stock under its share repurchase program, at an average price of $218.25, for a total investment of $133.9 million. The Company has repurchased a total of 47.6 million shares of its common stock under its share repurchase program since the inception of the program in January of 2011 and through May 8, 2015, at an average price of $94.29, for a total aggregate investment of $4.5 billion.

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Long-Term Debt (Unsecured Revolving Credit Facility) (Details) (Unsecured debt [Member], Line of credit facility [Member], USD $)	3 Months Ended
	Mar. 31, 2015 Rate	Dec. 31, 2014
Credit agreement inception date	Jan. 14, 2011
Current maximum borrowing capacity under credit facility	$ 600,000,000
Line of credit facility expiration date	Jul. 02, 2018
Maximum aggregate increase to credit facility	200,000,000
Letters of credit	50,500,000	47,900,000
Outstanding borrowings under credit facility	0	0
Covenant description for debt instrument	The Credit Agreement contains certain covenants, including limitations on indebtedness, a minimum consolidated fixed charge coverage ratio of 2.50 times through maturity, and a maximum consolidated leverage ratio of 3.00 times through maturity. The consolidated leverage ratio includes a calculation of adjusted debt to earnings before interest, taxes, depreciation, amortization, rent and non-cash share-based compensation expense. Adjusted debt includes outstanding debt, outstanding stand-by letters of credit and similar instruments, six-times rent expense and excludes any premium or discount recorded in conjunction with the issuance of long-term debt. In the event that the Company should default on any covenant contained within the Credit Agreement, certain actions may be taken, including, but not limited to, possible termination of commitments, immediate payment of outstanding principal amounts plus accrued interest and other amounts payable under the Credit Agreement and litigation from lenders.
Line of credit facility fee percentage	0.125%
Line of credit facility covenant compliance	As of March 31, 2015, the Company remained in compliance with all covenants under the Credit Agreement.
Amendment one [Member]
Credit agreement amendment date	Sep. 09, 2011
Amendment two [Member]
Credit agreement amendment date	Jul. 02, 2013
Letter of credit [Member]
Line of credit facility sublimit	200,000,000
Swing line revolver [Member]
Line of credit facility sublimit	$ 75,000,000
Spread over Eurodollar rate [Member]
Line of credit current interest rate	0.875%
Spread over Base rate [Member]
Line of credit current interest rate	0.00%
Through maturity [Member]
Minimum debt instrument consolidated fixed charge coverage ratio covenant	2.50
Maximum debt instrument consolidated leverage ratio covenant	3.00

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Share-Based Compensation and Benefit Plans (Other Share-Based Compensation Activity) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Employee Stock Purchase Plan [Member]
Compensation expense for benefit plans	$ 489	$ 438
Income tax benefit from compensation expense for benefit plans	181	162
Restricted Stock [Member]
Compensation expense for benefit plans	404	573
Income tax benefit from compensation expense for benefit plans	$ 149	$ 212

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Warranties (Tables)

3 Months Ended

Mar. 31, 2015

Product Warranties Disclosures [Abstract]

Product warranty liabilities

Balance at December 31, 2014	$	34,226
Warranty claims	(10,733		)
Warranty accruals	8,616
Balance at March 31, 2015	$	32,109