O'Reilly Automotive (ORLY) 10-K 28 Feb 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Feb. 24, 2014	Jun. 30, 2013
Document and Entity Information	'	'	'
Document type	'10-K	'	'
Amendment flag	'false	'	'
Document period end date	31-Dec-13	'	'
Document fiscal year focus	'2013	'	'
Current fiscal year end date	'--12-31	'	'
Document fiscal period focus	'FY	'	'
Entity registrant name	'O REILLY AUTOMOTIVE INC	'	'
Trading symbol	'orly	'	'
Entity central index key	'0000898173	'	'
Entity well-known seasoned issuer	'Yes	'	'
Entity voluntary filers	'No	'	'
Entity current reporting status	'Yes	'	'
Entity filer category	'Large Accelerated Filer	'	'
Entity common stock, shares outstanding	'	106,364,924	108,886,775
Entity public float	'	$16,366,370,856	$12,262,828,601

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Assets	'	'
Cash and cash equivalents	$231,318	$248,128
Accounts receivable, less allowance for doubtful accounts $6,661 in 2013 and $6,447 in 2012	131,504	122,989
Amounts receivable from vendors	66,619	58,185
Inventory	2,375,047	2,276,331
Other current assets	30,713	27,315
Total current assets	2,835,201	2,732,948
Property and equipment, at cost	3,606,837	3,269,570
Less: accumulated depreciation and amortization	1,181,734	1,057,980
Net property and equipment	2,425,103	2,211,590
Notes receivable, less current portion	13,066	5,347
Goodwill	756,225	758,410
Other assets, net	37,613	40,892
Total assets	6,067,208	5,749,187
Liabilities and shareholders' equity	'	'
Accounts payable	2,056,521	1,929,112
Self-insurance reserves	57,700	54,190
Accrued payroll	65,520	60,120
Accrued benefits and withholdings	41,262	42,417
Deferred income taxes	20,222	19,472
Income taxes payable	0	5,932
Other current liabilities	181,718	161,400
Current portion of long-term debt	67	222
Total current liabilities	2,423,010	2,272,865
Long-term debt, less current portion	1,396,141	1,095,734
Deferred income taxes	80,713	79,544
Other liabilities	201,023	192,737
Shareholders' equity:	'	'
Preferred stock, $0.01 par value: Authorized shares - 5,000,000 Issued and outstanding shares - none	0	0
Common stock, $0.01 par value: Authorized shares - 245,000,000 Issued and outstanding shares - 105,939,766 as of December 31, 2013, and 112,963,413 as of December 31, 2012	1,059	1,130
Additional paid-in capital	1,118,929	1,083,910
Retained earnings	846,333	1,023,267
Total shareholders' equity	1,966,321	2,108,307
Total liabilities and shareholders' equity	$6,067,208	$5,749,187

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Accounts receivable, allowance for doubtful accounts	$6,661	$6,447
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	245,000,000	245,000,000
Common stock, shares issued	105,939,766	112,963,413
Common stock, shares outstanding	105,939,766	112,963,413

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement [Abstract]	'	'	'
Sales	$6,649,237	$6,182,184	$5,788,816
Cost of goods sold, including warehouse and distribution expenses	3,280,236	3,084,766	2,951,467
Gross profit	3,369,001	3,097,418	2,837,349
Selling, general and administrative expenses	2,265,516	2,120,025	1,973,381
Former CSK officer clawback	0	0	-2,798
Operating income	1,103,485	977,393	866,766
Other income (expense):	'	'	'
Interest expense	-49,074	-40,200	-28,165
Interest income	1,992	2,441	2,245
Write-off of asset-based revolving credit facility debt issuance costs	0	0	-21,626
Termination of interest rate swap agreements	0	0	-4,237
Other, net	2,539	1,887	790
Total other expense	-44,543	-35,872	-50,993
Income before income taxes	1,058,942	941,521	815,773
Provision for income taxes	388,650	355,775	308,100
Net income	$670,292	$585,746	$507,673
Earnings per share-basic:	'	'	'
Earnings per share - basic	$6.14	$4.83	$3.77
Weighted-average common shares outstanding - basic	109,244	121,182	134,667
Earnings per share-assuming dilution:	'	'	'
Earnings per share - assuming dilution	$6.03	$4.75	$3.71
Weighted-average common shares outstanding - assuming dilution	111,101	123,314	136,983

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Components of Comprehensive Income	'	'	'
Net income	$670,292	$585,746	$507,673
Reclassification adjustment for unrealized losses on cash flow hedges, net of tax, included in net income	0	0	2,970
Other comprehensive income	0	0	2,970
Total comprehensive income	$670,292	$585,746	$510,643

Consolidated_Statements_of_Sha

Consolidated Statements of Shareholders' Equity (USD $)	Total	Common stock [Member]	Additional paid-in capital [Member]	Retained earnings [Member]	Accumulated other comprehensive income (loss) [Member]
In Thousands, except Share data
Balance at Dec. 31, 2010	$3,209,685	$1,410	$1,141,749	$2,069,496	($2,970)
Balance (in shares) at Dec. 31, 2010	'	141,026,000	'	'	'
Net income	507,673	'	'	507,673	'
Reclassification adjustment for unrealized losses on cash flow hedge, net of tax of $1,875, included in net income	2,970	'	'	'	2,970
Issuance of common stock under employee benefit plans, net of forfeitures and shares withheld to cover taxes	9,039	2	9,037	'	'
Issuance of common stock under employee benefit plans, net of forfeitures and shares withheld to cover taxes, shares	'	170,000	'	'	'
Net issuance of common stock upon exercise of stock options	50,309	19	50,290	'	'
Net issuance of common stock upon exercise of stock options, shares	'	1,861,000	'	'	'
Excess tax benefit of stock options exercised	22,885	'	22,885	'	'
Share based compensation	18,922	'	18,922	'	'
Share repurchases, including fees	-976,632	-159	-132,778	-843,695	'
Share repurchases, including fees, shares	'	-15,877,000	'	'	'
Balance at Dec. 31, 2011	2,844,851	1,272	1,110,105	1,733,474	'
Balance (in shares) at Dec. 31, 2011	'	127,180,000	'	'	'
Net income	585,746	'	'	585,746	'
Reclassification adjustment for unrealized losses on cash flow hedge, net of tax of $1,875, included in net income	0	'	'	'	'
Issuance of common stock under employee benefit plans, net of forfeitures and shares withheld to cover taxes	9,553	1	9,552	'	'
Issuance of common stock under employee benefit plans, net of forfeitures and shares withheld to cover taxes, shares	'	124,000	'	'	'
Net issuance of common stock upon exercise of stock options	54,876	19	54,857	'	'
Net issuance of common stock upon exercise of stock options, shares	'	1,860,000	'	'	'
Excess tax benefit of stock options exercised	38,572	'	38,572	'	'
Share based compensation	19,996	'	19,996	'	'
Share repurchases, including fees	-1,445,287	-162	-149,172	-1,295,953	'
Share repurchases, including fees, shares	-16,201,000	-16,201,000	'	'	'
Balance at Dec. 31, 2012	2,108,307	1,130	1,083,910	1,023,267	'
Balance (in shares) at Dec. 31, 2012	112,963,413	112,963,000	'	'	'
Net income	670,292	'	'	670,292	'
Reclassification adjustment for unrealized losses on cash flow hedge, net of tax of $1,875, included in net income	0	'	'	'	'
Issuance of common stock under employee benefit plans, net of forfeitures and shares withheld to cover taxes	10,663	'	10,663	'	'
Issuance of common stock under employee benefit plans, net of forfeitures and shares withheld to cover taxes, shares	'	113,000	'	'	'
Net issuance of common stock upon exercise of stock options	59,745	14	59,731	'	'
Net issuance of common stock upon exercise of stock options, shares	'	1,393,000	'	'	'
Excess tax benefit of stock options exercised	30,811	'	30,811	'	'
Share based compensation	19,531	'	19,531	'	'
Share repurchases, including fees	-933,028	-85	-85,717	-847,226	'
Share repurchases, including fees, shares	-8,529,000	-8,529,000	'	'	'
Balance at Dec. 31, 2013	$1,966,321	$1,059	$1,118,929	$846,333	'
Balance (in shares) at Dec. 31, 2013	105,939,766	105,940,000	'	'	'

Consolidated_Statements_of_Sha1

Consolidated Statements of Shareholders' Equity (Parenthetical) (USD $)	Dec. 31, 2011
In Thousands, unless otherwise specified
Statement of Stockholders' Equity [Abstract]	'
Tax effect of unrealized loss on cash flow hedge	$1,875

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating activities:	'	'	'
Net income	$670,292	$585,746	$507,673
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Depreciation and amortization of property, equipment and intangibles	183,180	177,106	165,880
Amortization of debt premium, discount and issuance costs	2,054	1,788	1,797
Write-off of asset-based revolving credit facility debt issuance costs	0	0	21,626
Excess tax benefit from stock options exercised	-30,811	-38,631	-22,985
Deferred income taxes	1,919	8,162	54,120
Share-based compensation programs	21,722	22,026	20,579
Other	7,405	7,464	8,292
Changes in operating assets and liabilities:	'	'	'
Accounts receivable	-16,937	4,404	-21,219
Inventory	-96,876	-276,904	37,740
Accounts payable	127,178	645,706	383,632
Income taxes payable	24,777	71,346	-8,625
Accrued payroll	5,400	7,655	-269
Accrued benefits and withholdings	2,355	5,464	1,500
Other	6,368	30,223	-30,750
Net cash provided by operating activities	908,026	1,251,555	1,118,991
Investing activities:	'	'	'
Purchases of property and equipment	-395,881	-300,719	-328,319
Proceeds from sale of property and equipment	1,731	3,044	2,715
Payments received on notes receivable	5,396	4,157	5,435
Other	0	-23,889	516
Net cash used in investing activities	-388,754	-317,407	-319,653
Financing activities:	'	'	'
Proceeds from borrowings on asset-based revolving credit facility	0	0	42,400
Payments on asset-based revolving credit facility	0	0	-398,400
Proceeds from the issuance of long-term debt	299,976	298,881	795,963
Payment of debt issuance costs	-2,967	-2,376	-9,942
Principal payments on debt and capital leases	-224	-935	-1,443
Repurchases of common stock	-933,028	-1,445,287	-976,632
Excess tax benefit from stock options exercised	30,811	38,631	22,985
Net proceeds from issuance of common stock	69,350	63,514	57,562
Net cash used in financing activities	-536,082	-1,047,572	-467,507
Net (decrease) increase in cash and cash equivalents	-16,810	-113,424	331,831
Cash and cash equivalents at beginning of year	248,128	361,552	29,721
Cash and cash equivalents at end of year	231,318	248,128	361,552
Supplemental disclosures of cash flow information:	'	'	'
Income taxes paid	362,596	274,637	252,769
Interest paid, net of capitalized interest	$46,760	$34,655	$13,350

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Policy Text Block [Abstract]	'
Summary of significant accounting policies	'
	NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Nature of business:
	O'Reilly Automotive, Inc. (“O’Reilly” or the “Company”) is a specialty retailer and supplier of automotive aftermarket parts. The Company’s stores carry an extensive product line, including new and remanufactured automotive hard parts, maintenance items and various automotive accessories. As of December 31, 2013, the Company owned and operated 4,166 stores in 42 states, servicing both the do-it-yourself (“DIY”) customer and the professional service provider. The Company’s robust distribution system provides stores with same-day or overnight access to an extensive inventory of hard-to-find items not typically stocked in the stores of other auto parts retailers.
	Segment reporting:
	The Company is managed and operated by a single management team reporting to the chief operating decision maker. O'Reilly stores have similar characteristics including the nature of the products and services, the type and class of customers and the methods used to distribute products and provide service to its customers and, as a whole, make up a single operating segment. The Company does not prepare discrete financial information with respect to product lines or geographic locations and as such has one reportable segment.
	Principles of consolidation:
	The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant inter-company balances and transactions have been eliminated in consolidation.
	Use of estimates:
	The preparation of the consolidated financial statements, in conformity with accounting principles generally accepted in the United States (“GAAP”), requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could materially differ from those estimates.
	Cash equivalents:
	Cash equivalents include investments with maturities of 90 days or less on the date of purchase.
	Accounts receivable:
	The Company maintains allowances for doubtful accounts for estimated losses resulting from the inability of the Company’s customers to make required payments. The Company considers the following factors when determining if collection is reasonably assured: customer creditworthiness, past transaction history with the customer, current economic and industry trends and changes in customer payment terms. Amounts due to the Company from its Team Members are included as a component of accounts receivable. These amounts consist primarily of purchases of merchandise on Team Member accounts. Accounts receivable due from Team Members was approximately $1.0 million and $2.1 million as of December 31, 2013 and 2012, respectively.
	The Company grants credit to certain customers who meet the Company’s pre-established credit requirements. Concentrations of credit risk with respect to these receivables are limited because the Company’s customer base consists of a large number of small customers, spreading the credit risk across a broad base. The Company also controls this credit risk through credit approvals, credit limits and accounts receivable and credit monitoring procedures. Generally, the Company does not require security when credit is granted to customers. Credit losses are provided for in the Company’s consolidated financial statements and have consistently been within management’s expectations.
	Amounts receivable from vendors:
	The Company receives concessions from its vendors through a variety of programs and arrangements, including allowances for new stores and warranties, volume purchase rebates and co-operative advertising. Co-operative advertising allowances that are incremental to the Company’s advertising program, specific to a product or event and identifiable for accounting purposes, are reported as a reduction of advertising expense in the period in which the advertising occurred. All other vendor concessions are recognized as a reduction to the cost of inventory. Amounts receivable from vendors also includes amounts due to the Company for changeover merchandise and product returns. The Company regularly reviews vendor receivables for collectability and assesses the need for a reserve for uncollectable amounts based on an evaluation of the Company’s vendors’ financial positions and corresponding abilities to meet financial obligations. Management does not believe there is a reasonable likelihood that the Company will be unable to collect the amounts receivable from vendors and the Company did not record a reserve for uncollectable amounts from vendors in the consolidated financial statements as of December 31, 2013 or 2012.
	Inventory:
	Inventory, which consists of automotive hard parts, maintenance items, accessories and tools, is stated at the lower of cost or market. Inventory also includes capitalized costs related to procurement, warehousing and distribution centers (“DCs”). Cost has been determined using the last-in, first-out (“LIFO”) method, which more accurately matches costs with related revenues. Over time, as the Company's merchandise inventory purchases have increased, this has resulted in improved acquisition costs from its suppliers and the corresponding price deflation exhausted the Company's LIFO reserve balance during the year ended December 31, 2013. The Company's policy is not to write up the value of its inventory in excess of its replacement cost. Accordingly, the Company's merchandise inventory is effectively being recorded at replacement cost as of December 31, 2013. The replacement cost of inventory was $2.38 billion and $2.31 billion as of December 31, 2013 and 2012, respectively. LIFO costs exceeded replacement costs by $21.6 million at December 31, 2013.
	Property and equipment:
	Property and equipment are carried at cost. Depreciation is calculated using the straight-line method generally over the estimated useful lives of the assets. Leasehold improvements are amortized over the lesser of the lease term or the estimated economic life of the assets. The lease term includes renewal options determined by management at lease inception for which failure to execute renewal options would result in a substantial economic penalty to the Company. Maintenance and repairs are charged to expense as incurred. Upon retirement or sale, the cost and accumulated depreciation are eliminated and the gain or loss, if any, is included as a component of “Other income (expense)” in the Company’s Consolidated Statements of Income. The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be fully recoverable.
	Notes receivable:
	The Company had notes receivable from vendors and other third parties amounting to $17.2 million and $9.5 million at December 31, 2013 and 2012, respectively. The notes receivable, which bear interest at rates ranging from 0% to 10%, are due in varying amounts through March of 2019. Interest income on notes receivable is recorded in accordance with the note terms to the extent that such amounts are expected to be collected. The Company regularly reviews its notes receivable for collectability and assesses the need for a reserve for uncollectable amounts based on an evaluation of the Company’s borrowers’ financial positions and corresponding abilities to meet financial obligations. Management does not believe there is a reasonable likelihood that the Company will be unable to collect the notes receivable and the Company did not record a reserve for uncollectable notes receivable in the consolidated financial statements as of December 31, 2013 or 2012.
	Goodwill and other intangibles:
	The accompanying Consolidated Balance Sheets at December 31, 2013 and 2012, include goodwill and other intangible assets recorded as the result of acquisitions. The Company reviews goodwill for impairment annually during the fourth quarter, or when events or changes in circumstances indicate the carrying value of these assets might exceed their current fair values, rather than systematically amortizing goodwill against earnings. During 2013 and 2012, the goodwill impairment test included a quantitative assessment, which compared the fair value of the reporting unit to its carrying amount, including goodwill. The Company operates as a single reporting unit, and the Company determined that its fair value exceeded its carrying value, including goodwill, as of December 31, 2013 and 2012; as such, no goodwill impairment adjustment was required as of December 31, 2013 and 2012. Finite-lived intangibles are carried at cost. Amortization is calculated using the straight-line method, generally over the estimated useful lives of the intangibles.
	Impairment of long-lived assets:
	The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. When such an event occurs, the Company compares the sum of the undiscounted expected future cash flows of the asset (asset group) with the carrying amounts of the asset. If the undiscounted expected future cash flows are less than the carrying value of the assets, the Company measures the amount of impairment loss as the amount by which the carrying amount of the assets exceeds the fair value of the assets. The Company has not historically recorded any material impairment to its long-lived assets and the Company did not record an impairment to its long-lived assets during the year ended December 31, 2013 or 2012.
	Self-insurance reserves:
	The Company uses a combination of insurance and self-insurance mechanisms to provide for potential liabilities for Team Member health care benefits, workers’ compensation, vehicle liability, general liability and property loss. With the exception of certain Team Member health care benefit liabilities, employment related claims and litigation, certain commercial litigation and certain regulatory matters, the Company obtains third-party insurance coverage to limit its exposure. The Company estimates its self-insurance liabilities by considering a number of factors, including historical claims experience and trend-lines, projected medical and legal inflation, growth patterns and exposure forecasts. Certain of these liabilities were recorded at an estimate of their net present value, using a credit-adjusted discount rate.
	The following table identifies the components of the Company’s self-insurance reserves as of December 31, 2013 and 2012 (in thousands):
		December 31,
		2013		2012
	Self-insurance reserves (undiscounted)	$	126,715	$	122,866
	Self-insurance reserves (discounted)	$	116,062	$	111,840
	The current portion of the Company’s discounted self-insurance reserves totaled $57.7 million and $54.2 million as of December 31, 2013 and 2012, respectively. The remainder was included within “Other liabilities” on the accompanying Consolidated Balance Sheets as of December 31, 2013 and 2012.
	Warranties:
	The Company offers 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 vendors. Certain vendors 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 vendor 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. See Note 9 for further information concerning the Company’s aggregate product warranty liability.
	Litigation reserves:
	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 on pending litigation matters. Although the Company cannot ascertain the total amount of liability that it may incur from any of these matters, the Company does not currently believe that in the aggregate, taking into account applicable insurance coverage, these matters will have a material adverse effect on its consolidated financial position, results of operations or cash flows. In addition, O’Reilly was involved in resolving legacy governmental investigations and litigation commenced by the Department of Justice (“DOJ”) and Securities and Exchange Commission (“SEC”) against CSK Automotive Corporation (“CSK”) and certain former CSK employees arising out of alleged conduct relating to periods prior to the Company’s acquisition of CSK in 2008; as a result, O’Reilly incurred legal fees and costs related to potential indemnification obligations. See Note 14 for further information concerning these legal matters.
	Closed property liabilities:
	The Company maintains reserves for closed stores and other properties that are no longer being utilized in current operations. The Company provides for these liabilities using a credit-adjusted discount rate to calculate the present value of the remaining non-cancelable lease payments, occupancy costs and lease termination fees after the close date, net of estimated sublease income. In conjunction with the acquisition of CSK, the Company’s reserves include purchase accounting liabilities related to acquired properties that were no longer being utilized in the acquired business as well as the Company’s planned exit activities. See Note 7 for further information concerning these closed property liabilities.
	Derivative instruments and hedging activities:
	The Company’s accounting policies for derivative financial instruments are based on whether the instruments meet the criteria for designation as cash flow or fair value hedges. The criteria for designating a derivative as a hedge include the assessment of the instrument’s effectiveness in risk reduction, matching of the derivative instrument to its underlying transaction and the probability that the underlying transaction will occur. A designated hedge of the exposure to variability in the future cash flows of an asset or a liability qualifies as a cash flow hedge. A designated hedge of the exposure to changes in fair value of an asset or a liability qualifies as a fair value hedge. For derivatives with cash flow hedge accounting designation, the Company would recognize the after-tax gain or loss from the effective portion of the hedge as a component of “Accumulated other comprehensive loss” and would reclassify it into earnings in the same period or periods in which the hedged transaction affects earnings, and within the same income statement line item as the impact of the hedged transaction. For derivatives with fair value hedge accounting designation, the Company would recognize gains or losses from the change in fair value of these derivatives, as well as the offsetting change in the fair value of the underlying hedged item, in earnings. As of December 31, 2013 and 2012, the Company did not hold any instruments that qualified as cash flow or fair value hedge derivatives.
	Share repurchases:
	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. All shares repurchased under the share repurchase program are retired and recorded under the par value method on the accompanying Consolidated Balance Sheets. See Note 10 for further information concerning the Company’s share repurchase program.
	Revenue recognition:
	Over-the-counter retail sales are recorded when the customer takes possession of the merchandise. Sales to professional service provider customers, also referred to as “commercial sales,” are recorded upon same-day delivery of the merchandise to the customer, generally at the customer’s place of business. Wholesale sales to other retailers, also referred to as “jobber sales,” are recorded upon shipment of the merchandise from a regional DC with same-day delivery to the jobber customer's location. Internet retail sales are recorded when the merchandise is shipped or when the merchandise is picked up in a store. All sales are recorded net of estimated returns allowances, discounts and taxes.
	Cost of goods sold and selling, general and administrative expenses:
	The following table illustrates the primary costs classified in each major expense category:
	Cost of goods sold, including warehouse and distribution expenses		Selling, general and administrative expenses
	Total cost of merchandise sold, including:		Payroll and benefit costs for store and corporate Team Members
	Freight expenses associated with acquiring merchandise and with moving merchandise inventories from the Company's distribution centers to the stores		Occupancy costs of store and corporate facilities
	Defective merchandise and warranty costs		Depreciation and amortization related to store and corporate assets
	Vendor allowances and incentives, including:		Vehicle expenses for store delivery services
	Allowances that are not reimbursements for specific, incremental and identifiable costs		Self-insurance costs
	Cash discounts on payments to vendors		Closed store expenses
	Costs associated with the Company's supply chain, including:		Other administrative costs, including:
	Payroll and benefit costs		Accounting, legal and other professional services
	Warehouse occupancy costs		Bad debt, banking and credit card fees
	Transportation costs		Supplies
	Depreciation		Travel
	Inventory shrinkage		Advertising costs
	Operating leases:
	The Company recognizes rent expense on a straight-line basis over the lease terms of its stores and DCs. Generally, the lease term for stores is the base lease term and the lease term for DCs includes the base lease term plus certain renewal option periods for which renewal is reasonably assured and failure to exercise the renewal option would result in a significant economic penalty. The Company’s policy is to amortize leasehold improvements associated with the Company’s operating leases over the lesser of the lease term or the estimated economic life of those assets.
Advertising expenses:
Advertising expense consists primarily of expenses related to the Company’s integrated marketing program, which includes television, radio, direct mail and newspaper distribution, in-store and online promotions, and sports and event sponsorships. The Company expenses advertising costs as incurred. The Company also participates in cooperative advertising arrangements with certain of its vendors. Advertising expense, net of cooperative advertising allowances from vendors that were incremental to the specific advertising program and identifiable, included as a component of “Selling, general and administrative expenses” (“SG&A”) on the accompanying Consolidated Statements of Income amounted to $78.3 million, $74.8 million and $73.8 million for the years ended December 31, 2013, 2012 and 2011, respectively.
Share-based compensation and benefit plans:
The Company sponsors employee share-based benefit plans and employee and director share-based compensation plans. The Company recognizes compensation expense for its share-based plans based on the fair value of the awards on the date of the grant, award or issuance. Share-based plans include stock option awards issued under the Company’s employee incentive plans, director stock plan, stock issued through the Company’s employee stock purchase plan and stock awarded to employees and directors through other compensation plans. See Note 12 for further information concerning these plans.
Pre-opening expenses:
Costs associated with the opening of new stores, which consist primarily of payroll and occupancy costs, are charged to SG&A as incurred. Costs associated with the opening of new distribution centers, which consist primarily of payroll and occupancy costs, are included as a component of “Cost of goods sold, including warehouse and distribution expenses” on the accompanying Consolidated Statements of Income as incurred.
Interest expense:
The Company capitalizes interest costs as a component of construction in progress, based on the weighted-average interest rates incurred on its long-term borrowings. Total interest costs capitalized for the years ended December 31, 2013, 2012 and 2011, were $10.6 million, $6.1 million and $4.7 million, respectively.
In conjunction with the issuance or amendment of long-term debt instruments, the Company incurs various costs including debt registration fees, accounting and legal fees and underwriter and book runner fees. These debt issuance costs have been deferred and are being amortized over the term of the corresponding debt issue and the amortization expense is included as a component of “Interest expense” in the accompanying Consolidated Statements of Income. Deferred debt issuance costs totaled $11.5 million and $10.1 million, net of amortization, as of December 31, 2013 and 2012, respectively, of which $1.6 million and $1.5 million were included within “Other current assets” on the accompanying Consolidated Balance Sheets as of December 31, 2013 and 2012, with the remainder included within “Other assets, net” on the accompanying Consolidated Balance Sheets as of December 31, 2013 and 2012. See Note 5 for further information concerning debt issuance costs associated with the issuances of or amendments to long-term debt instruments.
Income taxes:
The Company accounts for income taxes using the liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined based on differences between the GAAP basis and tax basis of assets and liabilities using enacted tax rules and rates currently scheduled to be in effect for the year in which the differences are expected to reverse. Tax carry forwards are also recognized in deferred tax assets and liabilities under this method. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period of the enactment date. The Company would record a valuation allowance against deferred tax assets to the extent it is more likely than not the amount will not be realized, based upon evidence available at the time of the determination and any change in the valuation allowance is recorded in the period of a change in such determination. The Company did not establish a valuation allowance for deferred tax assets as of December 31, 2013 and 2012, as it was considered more likely than not that deferred tax assets were realizable through a combination of future taxable income, the realization of deferred tax liabilities and tax planning strategies. The Company regularly reviews its potential tax liabilities for tax years subject to audit. The amount of such liabilities is based on various factors, such as differing interpretations of tax regulations by the responsible tax authority, experience with previous tax audits and applicable tax law rulings. Changes in the Company’s tax liability may occur in the future as its assessments change based on the progress of tax examinations in various jurisdictions and/or changes in tax regulations. In management’s opinion, adequate provisions for income taxes have been made for all years presented. The estimates of the Company’s potential tax liabilities contain uncertainties because management must use judgment to estimate the exposures associated with the Company’s various tax positions and actual results could differ from estimates.
Earnings per share:
Basic earnings per share is calculated by dividing net income by the weighted average number of common shares outstanding during the fiscal period. Diluted earnings per share is calculated by dividing the weighted-average number of common shares outstanding plus, the common stock equivalents associated with the potential impact of dilutive stock options. Certain common stock equivalents that could potentially dilute basic earnings per share in the future, were not included in the fully diluted computation because they would have been antidilutive. Generally, stock options are antidilutive and excluded from the earnings per share calculation when the exercise price exceeds the market price of the common shares. See Note 17 for further information concerning these common stock equivalents.
New accounting pronouncements:
In July of 2013, the FASB issued ASU No. 2013-11, “Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists” (“ASU 2013-11”). Under ASU 2013-11, an entity is required to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward. If a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. ASU 2013-11 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. The Company will adopt this guidance beginning with its first quarter ending March 31, 2014; the application of this guidance affects presentation only and, therefore, it is not expected to have a material impact on the Company’s consolidated financial condition, results of operations or cash flows.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2013
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 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.
	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 December 31, 2013 and 2012, 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 Consolidated Balance Sheets as of December 31, 2013 and 2012.
	The table below identifies the estimated fair value of the Company’s senior notes, using the market approach. The fair value as of December 31, 2013 and 2012, was determined by reference to quoted market prices of the same or similar instruments (Level 2) (in thousands):
		December 31, 2013				December 31, 2012
		Carrying		Estimated Fair Value		Carrying		Estimated Fair Value
		Amount				Amount
	4.875% Senior Notes due 2021	$	497,525	$	524,434	$	497,173	$	559,870
	4.625% Senior Notes due 2021	$	299,598	$	310,141	$	299,545	$	331,224
	3.800% Senior Notes due 2022	$	299,011	$	290,453	$	298,916	$	313,890
	3.850% Senior Notes due 2023	$	299,976	$	289,362	$	—	$	—
	The accompanying Consolidated Balance Sheets include other financial instruments, including cash and cash equivalents, accounts receivable, amounts receivable from vendors 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.

Property_and_Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property and equipment	'
	NOTE 3 – PROPERTY AND EQUIPMENT
	The following table identifies the types of property and equipment included in the accompanying consolidated financial statements as of December 31, 2013 and 2012 (in thousands, except useful lives):
		Original Useful Lives	December 31, 2013		December 31, 2012
	Land		$	457,858	$	420,292
	Buildings and building improvements	15 – 39 years	1,197,369		1,078,265
	Leasehold improvements	3 – 25 years	483,578		447,046
	Furniture, fixtures and equipment	3 – 20 years	960,928		932,406
	Vehicles	5 – 10 years	251,505		231,615
	Construction in progress		255,599		159,946
	Total property and equipment		3,606,837		3,269,570
	Less: accumulated depreciation and amortization		1,181,734		1,057,980
	Net property and equipment		$	2,425,103	$	2,211,590
	The contractual terms of all original and amended vehicle capital lease agreements expired in the fourth quarter of 2013. The vehicles under these expired capital lease agreements were either disposed, purchased by the Company or remain under short-term monthly agreements with the original lessor. The gross value of capital lease assets included in the “Vehicles” amounts of the above table was $7.0 million and $8.4 million at December 31, 2013 and 2012, respectively. As of December 31, 2013 and 2012, the Company recorded accumulated amortization on these capital lease assets in the amounts of $7.0 million and $8.4 million, respectively, all of which was included in “accumulated depreciation and amortization” in the above table.

Goodwill_and_Other_Intangibles

Goodwill and Other Intangibles	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and other intangibles	'
	GOODWILL AND OTHER INTANGIBLES
	Goodwill:
	Goodwill is reviewed for impairment annually during the fourth quarter, or more frequently if events or changes in business conditions indicate that impairment may exist. Goodwill is not amortizable for financial statement purposes. During the year ended December 31, 2013, the Company recorded a decrease in goodwill of $2.2 million, resulting from adjustments to purchase price allocations related to small acquisitions. During the year ended December 31, 2012, the Company recorded an increase in goodwill of $14.5 million, resulting primarily from purchase price allocations related to small acquisitions, partially offset by the excess tax benefit related to exercises of stock options acquired in the acquisition of CSK. The Company did not record any goodwill impairment during the years ended December 31, 2013 or 2012.
	The following table identifies the changes in goodwill for the years ended December 31, 2013 and 2012 (in thousands):
	Balance at December 31, 2011	$	743,907
	Activity	14,503
	Balance at December 31, 2012	758,410
	Activity	(2,185		)
	Balance at December 31, 2013	$	756,225
	As of December 31, 2013 and 2012, other than goodwill, the Company did not have any other indefinite lived intangible assets.
	Intangibles other than goodwill:
	The following table identifies the components of the Company’s amortizable intangibles as of December 31, 2013 and 2012 (in thousands):
		Cost of Amortizable					Accumulated Amortization						Net Amortizable Intangibles
		Intangibles					(Expense) Benefit
		December 31,			December 31,		December 31,			December 31,			December 31,		December 31,
		2013			2012		2013			2012			2013		2012
	Amortizable intangible assets:
	Favorable leases	$	50,910		$	50,910	$	(32,463	)	$	(28,566	)	$	18,447	$	22,344
	Non-compete agreements	647			717		(428		)	(447		)	219		270
	Total amortizable intangible assets	$	51,557		$	51,627	$	(32,891	)	$	(29,013	)	$	18,666	$	22,614
	Unfavorable leases	$	49,380		$	49,380	$	36,758		$	32,210		$	12,622	$	17,170
	The Company recorded favorable lease assets in conjunction with the acquisition of CSK; these favorable lease assets represent the values of operating leases acquired with favorable terms. These favorable leases had an estimated weighted-average remaining useful life of approximately 10.0 years as of December 31, 2013. For the years ended December 31, 2013, 2012 and 2011, the Company recorded amortization expense of $4.0 million, $4.7 million and $6.1 million, respectively, related to its amortizable intangible assets, which are included in “Other assets, net” on the accompanying Consolidated Balance Sheets.
	The Company recorded unfavorable lease liabilities in conjunction with the acquisition of CSK; these unfavorable lease liabilities represent the values of operating leases acquired with unfavorable terms. These unfavorable leases had an estimated weighted-average remaining useful life of approximately 4.9 years as of December 31, 2013. For the years ended December 31, 2013, 2012 and 2011, the Company recognized an amortized benefit of $4.5 million, $5.7 million and $6.7 million, respectively, related to these unfavorable operating leases, which are included in “Other liabilities” on the accompanying Consolidated Balance Sheets. These unfavorable lease liabilities are not included as a component of the Company’s closed store reserves, which are discussed in Note 6.
	The following table identifies the estimated amortization expense and benefit of the Company’s intangibles for each of the next five years as of December 31, 2013 (in thousands):
		Amortization Expense			Amortization Benefit		Total Amortization (Expense) Benefit
	2014	$	(3,109	)	$	3,642	$	533
	2015	(2,679		)	2,794		115
	2016	(2,323		)	2,076		(247		)
	2017	(1,907		)	1,493		(414		)
	2018	(1,444		)	923		(521		)
	Total	$	(11,462	)	$	10,928	$	(534	)

Financing

Financing	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Financing	'
	NOTE 5 – FINANCING
	The following table identifies the balances of the Company’s financing facilities as of December 31, 2013 and 2012 (in thousands):
		December 31,
		2013			2012
	Revolving Credit Facility	—			—
	4.875% Senior Notes due 2021 (1), effective interest rate of 4.970%	497,525			497,173
	4.625% Senior Notes due 2021 (2), effective interest rate of 4.649%	299,598			299,545
	3.800% Senior Notes due 2022 (3), effective interest rate of 3.845%	299,011			298,916
	3.850% Senior Notes due 2023 (4), effective interest rate of 3.851%	299,976			—
	(1)	Net of unamortized discount of $2.5 million and $2.8 million as of December 31, 2013 and 2012, respectively.
	(2)	Net of unamortized discount of $0.4 million and $0.5 million as of December 31, 2013 and 2012, respectively.
	(3)	Net of unamortized discount of $1.0 million and $1.1 million as of December 31, 2013 and 2012, respectively.
	(4)	Net of unamortized discount of less than $0.1 million as of December 31, 2013.
	The following table identifies the principal maturities of the Company’s financing facilities as of December 31, 2013 (in thousands):
			Scheduled Maturities
	2014		$	—
	2015		—
	2016		—
	2017		—
	2018		—
	Thereafter		1,400,000
	Total		$	1,400,000
	Unsecured revolving credit facility:
	In January of 2011, the Company entered into a credit agreement (the "Credit Agreement") for a five-year $750 million unsecured revolving credit facility (the "Revolving Credit Facility") arranged by Bank of America, N.A. and Barclays Capital, originally scheduled to mature in January of 2016. In September of 2011, the Company amended the Credit Agreement, decreasing the aggregate commitments under the Revolving Credit Facility to $660 million, extending the maturity date on the Credit Agreement to September of 2016 and reducing the facility fee and interest rate margins for borrowings under the Revolving Credit Facility. In conjunction with the amendment, the Company recognized a one-time charge related to the modification in the amount of $0.3 million, which is included in “Other income (expense)” on the accompanying Consolidated Statements of Income for the year ended December 31, 2011. In July of 2013, the Company again amended the Credit Agreement, decreasing the aggregate commitments under the Revolving Credit Facility to $600 million, extending the maturity date on the Credit Agreement to July of 2018 and reducing the facility fee and interest rate margins for borrowings under the Revolving Credit Facility. 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 December 31, 2013 and 2012, 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 $51.7 million and $57.3 million, respectively, reducing the aggregate availability under the Revolving Credit Facility by those amounts. As of December 31, 2013 and 2012, 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 Rating Services, subject to limited exceptions. Based upon the Company’s credit ratings at December 31, 2013, its margin for Base Rate loans was 0.000%, its margin for Eurodollar Rate loans was 0.975% and its facility fee was 0.150%.
	The Credit Agreement contains certain covenants, including limitations on indebtedness, a minimum consolidated fixed charge coverage ratio of 2.25 times through December 31, 2014, and 2.50 times thereafter 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 adjusted earnings before interest, taxes, depreciation, amortization, rent and stock-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 credit extensions, immediate payment of outstanding principal amounts plus accrued interest and other amounts payable under the Credit Agreement and litigation from lenders. As of December 31, 2013, the Company remained in compliance with all covenants under the Credit Agreement.
	Senior notes:
	4.875% Senior Notes due 2021:
	On January 14, 2011, the Company issued $500 million aggregate principal amount of unsecured 4.875% Senior Notes due 2021 (“4.875% Senior Notes due 2021”) at a price to the public of 99.297% of their face value with United Missouri Bank, N.A. (“UMB”) as trustee. Interest on the 4.875% Senior Notes due 2021 is payable on January 14 and July 14 of each year and is computed on the basis of a 360-day year.
	4.625% Senior Notes due 2021:
	On September 19, 2011, the Company issued $300 million aggregate principal amount of unsecured 4.625% Senior Notes due 2021 (“4.625% Senior Notes due 2021”) at a price to the public of 99.826% of their face value with UMB as trustee. Interest on the 4.625% Senior Notes due 2021 is payable on March 15 and September 15 of each year and is computed on the basis of a 360-day year.
	3.800% Senior Notes due 2022:
	On August 21, 2012, the Company issued $300 million aggregate principal amount of unsecured 3.800% Senior Notes due 2022 (“3.800% Senior Notes due 2022”) at a price to the public of 99.627% of their face value with UMB as trustee. Interest on the 3.800% Senior Notes due 2022 is payable on March 1 and September 1 of each year and is computed on the basis of a 360-day year.
	3.850% Senior Notes due 2023:
	On June 20, 2013, the Company issued $300 million aggregate principal amount of unsecured 3.850% Senior Notes due 2023 (“3.850% Senior Notes due 2023”) at a price to the public of 99.992% of their face value with UMB as trustee. Interest on the 3.850% Senior Notes due 2023 is payable on June 15 and December 15 of each year, which began on December 15, 2013, and is computed on the basis of a 360-day year. The net proceeds from the issuance of the 3.850% Senior Notes due 2023 were used to pay fees and expenses related to the offering, with the remainder intended to be used for general corporate purposes, including share repurchases.
	The senior notes are guaranteed on a senior unsecured basis by each of the Company’s subsidiaries (“Subsidiary Guarantors”) that incurs or guarantees the Company’s obligations under the Company’s Revolving Credit Facility or certain other debt of the Company or any of the 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, are 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 December 31, 2013.

Leasing

Leasing	12 Months Ended
	Dec. 31, 2013
Leases [Abstract]	'
Leasing	'
	LEASING
	The following table identifies the future minimum lease payments under all of the Company’s operating and capital leases for each of the next five years and in the aggregate as of December 31, 2013 (in thousands):
		Operating Leases				Capital Leases
		Related Parties		Non-Related Parties		Non-Related Parties		Total
	2014	$	4,555	$	242,571	$	77	$	247,203
	2015	4,621		228,364		26		233,011
	2016	4,633		208,269		—		212,902
	2017	4,405		186,686		—		191,091
	2018	4,196		160,049		—		164,245
	Thereafter	11,331		881,810		—		893,141
	Total	$	33,741	$	1,907,749	$	103	$	1,941,593
	Capital lease agreements:
	The Company assumed certain vehicle capital leases in the acquisition of CSK. The remaining vehicle capital lease agreements expired on October 15, 2013. There were no future minimum lease payments under these vehicle capital leases as of December 31, 2013. The present value of the future minimum lease payments under these vehicle capital leases totaled approximately $0.2 million at December 31, 2012, which were classified as long-term debt in the accompanying consolidated financial statements. The Company did not acquire any additional vehicles under capital leases during the years ended December 31, 2013 or 2012.
	The Company assumed certain building capital leases in the acquisition of CSK. The remaining building capital lease agreement will expire on April 30, 2015. The present value of future minimum lease payments under this building capital lease totaled approximately $0.1 million and $0.2 million at December 31, 2013 and 2012, respectively, which was classified as long-term debt in the accompanying consolidated financial statements. The Company did not acquire any additional buildings under capital leases during the years ended December 31, 2013 or 2012. See Note 15 for further information on the Company's related party operating leases.
	Operating lease commitments:
	The Company leases certain office space, retail stores, property and equipment under long-term, non-cancelable operating leases. Most of these leases include renewal options and some include options to purchase, provisions for percentage rent based on sales and/or incremental step increase provisions.
	The future minimum lease payments under the Company’s operating leases, in the table above, do not include potential amounts for percentage rent or other operating lease related costs and have not been reduced by expected future minimum sublease income. Expected future minimum sublease income under non-cancelable subleases is approximately $15.8 million at December 31, 2013.
	The following table summarizes the net rent expense amounts for the years ended December 31, 2013, 2012 and 2011:
		For the Year Ended December 31,
		2013		2012		2011
	Minimum operating lease expense	$	247,039	$	234,113	$	226,158
	Contingent rents	701		744		534
	Other lease related occupancy costs	11,257		10,043		8,821
	Total rent expense	258,997		244,900		235,513
	Less: sublease income	4,105		4,031		4,616
	Net rent expense	$	254,892	$	240,869	$	230,897

Exit_Activities

Exit Activities	12 Months Ended
	Dec. 31, 2013
Restructuring Charges [Abstract]	'
Exit activities	'
	NOTE 7 – EXIT ACTIVITIES
	The Company maintains reserves for closed stores and other properties that are no longer utilized in current operations.
	The following table identifies the closure reserves for stores and administrative office and distribution facilities, at December 31, 2013 and 2012 (in thousands):
		Store Closure			Administrative Office and Distribution Facilities Closure Liabilities
		Liabilities
	Balance at December 31, 2011	$	11,312		$	3,544
	Additions and accretion	584			170
	Payments	(2,998		)	(2,038		)
	Revisions to estimates	(561		)	—
	Balance at December 31, 2012	8,337			1,676
	Additions and accretion	459			105
	Payments	(2,458		)	(422		)
	Revisions to estimates	(499		)	—
	Balance at December 31, 2013	$	5,839		$	1,359
	The Company accrues for closed property operating lease liabilities using a credit-adjusted discount rate to calculate the present value of the remaining non-cancelable lease payments, contractual occupancy costs and lease termination fees after the closing date, net of estimated sublease income. The closed property lease liabilities are expected to be paid over the remaining lease terms, which currently extend through April 30, 2023. The Company estimates sublease income and future cash flows based on the Company’s experience and knowledge of the market in which the closed property is located, the Company’s previous efforts to dispose of similar assets and existing economic conditions. Adjustments to closed property reserves are made to reflect changes in estimated sublease income or actual contracted exit costs, which vary from original estimates, and are made for material changes in estimates in the period in which the changes become known.
	Revisions to estimates in closure reserves for stores and administrative office and distribution facilities include changes in the estimates of sublease agreements, changes in assumptions of various store closure activities, changes in assumed leasing arrangements and actual exit costs since the inception of the exit activities. Revisions to estimates and additions or accretions to reserves for store and administrative office closure liabilities are included in “Selling, general and administrative expenses” on the accompanying Consolidated Statements of Income for the year ended December 31, 2013 and 2012. Revisions to estimates and additions or accretions to reserves for distribution facility closure liabilities are included in “Cost of goods sold, including warehouse and distribution expenses” on the accompanying Consolidated Statements of Income for the years ended December 31, 2013 and 2012.
	The cumulative amount incurred in closure reserves for stores from the inception of the exit activity through December 31, 2013, was $24.4 million. The cumulative amount incurred in administrative office and distribution facilities from the inception of the exit activity through December 31, 2013, was $10.1 million. The balance of both these reserves is included in “Other current liabilities” and “Other liabilities” on the accompanying Consolidated Balance Sheets as of December 31, 2013 and 2012, based upon the dates when the reserves are expected to be settled.

Derivative_Instruments_and_Hed

Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative instruments and hedging activities	'
	NOTE 8 – DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
	Historically, the Company entered into interest rate swap contracts with various counterparties to mitigate cash flow risk associated with floating interest rates on previously outstanding borrowings under its asset-based revolving credit facility (the "ABL Credit Facility"). The fair values of the Company’s outstanding hedges were recorded as liabilities, the effective portion of the change in fair values of the Company’s cash flow hedges was recorded as a component of “Accumulated other comprehensive loss”, and any ineffectiveness was recognized in “Other income (expense)” in the accompanying Consolidated Statements of Income in the period of ineffectiveness. The interest rate swap contracts were designated as cash flow hedges with interest payments designed to offset the interest payments for borrowings under the ABL Credit Facility that corresponded with the notional amounts of the swaps. In January of 2011, the ABL Credit Facility was retired concurrent with the issuance of the Company’s 4.875% Senior Notes due 2021 and all interest rate swap contracts were terminated at the Company’s request. The Company recognized a charge of $4.2 million related to the termination of the interest rate swap contracts, which was included as a component of “Other income (expense)” in the accompanying Consolidated Statements of Income for the year ended December 31, 2011. As of December 31, 2013 and 2012, the Company did not hold any instruments that qualified as cash flow hedge derivatives.
	The table below outlines the effects the Company’s derivative financial instruments had on its Consolidated Statements of Income for the years ended December 31, 2013, 2012 and 2011 (in thousands):
		Location and Amount of Loss Recognized in Income on Derivatives
	Derivatives Designated as Hedging Instruments		For the Year Ended December 31,
		Classification	2013		2012		2011
	Interest rate swap contracts	Other income (expense)	$	—	$	—	$	(4,237	)

Warranties

Warranties	12 Months Ended
	Dec. 31, 2013
Product Warranties Disclosures [Abstract]	'
Warranties	'
	NOTE 9 – WARRANTIES
	The Company’s product warranty liabilities are included in “Other current liabilities” on the accompanying Consolidated Balance Sheets as of December 31, 2013 and 2012. The following table identifies the changes in the Company’s aggregate product warranty liabilities for the years ended December 31, 2013 and 2012 (in thousands):
		2013			2012
	Balance at January 1,	$	28,001		$	21,642
	Warranty claims	(50,859		)	(50,009		)
	Warranty accruals	56,244			56,368
	Balance at December 31,	$	33,386		$	28,001

Share_Repurchase_Program

Share Repurchase Program	12 Months Ended
	Dec. 31, 2013
Proceeds from (Repurchase of) Equity [Abstract]	'
Share repurchase program	'
	NOTE 10 – 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, for a three-year period. 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. During 2013, the Company announced that its Board of Directors approved a resolution to increase the cumulative authorization amount by an additional $500 million, which is effective for a three-year period and expires May 29, 2016. As of December 31, 2013, the cumulative authorization amount under the program was $3.5 billion. On February 5, 2014, the Company announced that its Board of Directors approved a resolution to increase the cumulative authorization amount by an additional $500 million, which is effective for a three-year period and expires February 5, 2017. As of February 5, 2014, the cumulative authorization amount under the program was $4.0 billion.
	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 Year Ended December 31,
		2013		2012
	Shares repurchased	8,529		16,201
	Average price per share	$	109.38	$	89.2
	Total investment	$	932,900	$	1,445,044
	As of December 31, 2013, the Company had $145.7 million remaining under its share repurchase program. Subsequent to the end of the year and through February 28, 2014, the Company did not repurchase a material number of shares of its common stock. The Company repurchased a total of 40.6 million shares of its common stock under its share repurchase program since the inception of the program in January of 2011 and through February 28, 2014, at an average price of $82.61 for a total aggregate investment of $3.4 billion.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]	'
Accumulated other comprehensive loss	'
	NOTE 11 – ACCUMULATED OTHER COMPREHENSIVE LOSS
	The table below identifies reclassification adjustments from “Accumulated other comprehensive loss” and the affect on the Consolidated Statements of Income for the year ended December 31, 2011 (in thousands):
	Affected Line Item in the Consolidated Statements of Income	Amount Reclassified from Accumulated Other Comprehensive Loss
	Unrealized loss on cash flow hedges:
	Termination of interest rate swap agreements, before tax	$	4,237
	Tax expense	(1,267		)
	Net of tax as of December 31, 2011	$	2,970
	No adjustments to “Accumulated other comprehensive loss” were recorded during the years ended December 31, 2013 or 2012.

ShareBased_Compensation_and_Be

Share-Based Compensation and Benefit Plans	12 Months Ended
	Dec. 31, 2013
Employee Benefits and Share-based Compensation [Abstract]	'
Share-based employee compensation plans and other compensation and benefit plans	'
	NOTE 12 – 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.
	The table below identifies the shares that have been authorized for issuance and the shares available for future issuance under the Company plans, as of December 31, 2013 (in thousands):
	Plans		Total Shares Authorized for Issuance under the Plans			Shares Available for Future
						Issuance under the Plans
	Employee Incentive Plans		34,000			6,711
	Director Stock Plan		1,000			267
	Performance Incentive Plan		650			378
	Employee Stock Purchase Plans		4,250			901
	Profit Sharing and Savings Plan		4,200			349
	Stock options:
	The Company’s employee incentive plans provide for the granting of stock options for the purchase of common stock of the Company to certain key employees of the Company. Employee stock 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. Employee stock options granted under the plans expire after ten years and typically vest 25% per year, over four years, or the minimum required service period. The Company records compensation expense for the grant date fair value of the option awards, adjusted for estimated forfeitures, evenly over the vesting period.
	The table below identifies the employee stock option activity under these plans during the year ended December 31, 2013:
		Shares			Weighted-Average Exercise Price				Average Remaining Contractual Terms		Aggregate
		(in thousands)							(in years)		Intrinsic Value
											(in thousands)
	Outstanding at December 31, 2012	6,721			$	51.03
	Granted	363			105.11
	Exercised	(1,375	)		43.09
	Forfeited	(532	)		76.77
	Outstanding at December 31, 2013	5,177			$	54.28			6.1		$	385,330
	Vested or expected to vest at December 31, 2013	4,909			$	52.87			6		$	372,291
	Exercisable at December 31, 2013	3,169			$	36.92			4.8		$	290,911
	The Company’s director stock plan provides for the granting of stock options for the purchase of common stock of the Company to directors of the Company. Director stock 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 stock options granted under the plans expire after seven years and vest fully after six months. The Company records compensation expense for the grant date fair value of the option awards evenly over the vesting period.
	The table below identifies the director stock option activity under this plan during the year ended December 31, 2013:
		Shares			Weighted-Average Exercise Price				Average Remaining Contractual Terms		Aggregate
		(in thousands)							(in years)		Intrinsic Value
											(in thousands)
	Outstanding at December 31, 2012	68			$	35.03
	Granted	—			—
	Exercised	(18	)		28.54
	Forfeited	—			—
	Outstanding at December 31, 2013	50			$	37.37			2.5		$	4,567
	Vested or expected to vest at December 31, 2013	50			$	37.37			2.5		$	4,567
	Exercisable at December 31, 2013	50			$	37.37			2.5		$	4,567
	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 years ended December 31, 2013, 2012 and 2011:
		December 31,
		2013				2012				2011
	Risk free interest rate	0.96	%			0.59	%			1.16	%
	Expected life	5		Years		3.9		Years		3.7		Years
	Expected volatility	31	%			33.5	%			33.3	%
	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 years ended December 31, 2013, 2012 and 2011:
		For the Year Ended December 31,
		2013				2012				2011
	Compensation expense for stock options awarded (in millions)	$	17.8			$	18.5			$	17.6
	Income tax benefit from compensation expense related to stock options (in millions)	6.8				7.1				6.8
	Total intrinsic value of stock options exercised (in millions)	95.8				113.6				71.5
	Cash received from exercise of stock options (in millions)	59.7				54.9				50.3
	Weighted-average grant-date fair value of options awarded	$	29.98			$	23.57			$	16.93
	Weighted-average remaining contractual life of exercisable options (in years)	4.77				5.13				5.12
	The remaining unrecognized compensation expense related to unvested stock option awards at December 31, 2013, was $36.6 million and the weighted-average period of time over which this cost will be recognized is 2.5 years.
	Restricted stock:
	The Company’s performance incentive plan 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. Generally, unvested shares are forfeited when an employee ceases employment. The fair value of shares awarded under this plan 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 vesting period.
	The table below identifies the employee restricted stock activity under this plan during the year ended December 31, 2013:
		Shares			Weighted-Average Grant-Date Fair Value
(in thousands)
Non-vested at December 31, 2012	27			$	70.64
Granted during the period	16			100.82
Vested during the period (1)	(22	)		73.67
Forfeited during the period	(1	)		83.06
Non-vested at December 31, 2013	20			$	92.02
(1)	Includes 9 thousand shares withheld to cover employees' taxes upon vesting.
The Company’s director stock plan provides for the award of shares of restricted stock that vest evenly over a three-year period and are held in escrow until such vesting has occurred. Generally, unvested shares are forfeited when a director ceases their service on the Company’s Board of Directors. The fair value of shares awarded under this plan 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 vesting period.
The table below identifies the director restricted stock activity under this plan during the year ended December 31, 2013:
	Shares			Weighted-Average Grant-Date Fair Value
	(in thousands)
Non-vested at December 31, 2012	10			$	79.58
Granted during the period	5			109.45
Vested during the period	(4	)		75.39
Forfeited during the period	—			—
Non-vested at December 31, 2013	11			$	94.18
The following table summarizes activity related to restricted stock awarded by the Company for the years ended December 31, 2013, 2012 and 2011:
	For the Year Ended December 31,
	2013				2012				2011
Compensation expense for restricted shares awarded (in millions)	$	2.2			$	2			$	1.7
Income tax benefit from compensation expense related to restricted shares (in millions)	$	0.8			$	0.8			$	0.6
Total fair value of restricted shares at vest date (in millions)	$	3.3			$	2.7			$	2.6
Shares awarded under the plans (in thousands)	21.2				23.7				49.9
Average grant-date fair value of shares awarded under the plans	$	102.63			$	90.1			$	56.18
The remaining unrecognized compensation expense related to unvested restricted share awards at December 31, 2013, was $2.9 million and the weighted-average period of time over which this cost will be recognized is 2.1 years.
Employee stock purchase plan:
The Company’s employee stock purchase plan (the “ESPP”) permits eligible employees to purchase shares of the Company’s common stock at 85% of the fair market value. Employees may authorize the Company to withhold up to 5% of their annual salary to participate in the plan. The fair value of shares issued under the ESPP is based on the average of the high and low market prices of the Company’s common stock during the offering periods. Compensation expense is recognized based on the discount between the grant-date fair value and the employee purchase price for the shares sold to employees.
The following table summarizes activity related to the Company’s ESPP for the years ended December 31, 2013, 2012 and 2011:
	For the Year Ended December 31,
	2013				2012				2011
Compensation expense for shares issued under the ESPP (in millions)	$	1.7			$	1.5			$	1.3
Income tax benefit from compensation expense for shares issued under the ESPP (in millions)	$	0.6			$	0.6			$	0.5
Shares issued under the ESPP (in thousands)	100.6				114.6				134.5
Weighted-average price of shares issued under the ESPP	$	95.51			$	75.42			$	53.93
Profit sharing and savings plan:
The Company sponsors a contributory profit sharing and savings 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. 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 issue any shares under this plan for the years ended December 31, 2013, 2012 or 2011. The Company does not anticipate funding the plan with the issuance of shares in the future. The Company made monetary matching contributions to the plan in the amounts of $16.5 million, $15.6 million and $11.8 million for the years ended December 31, 2013, 2012 and 2011, respectively.

Commitments

Commitments	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments	'
	COMMITMENTS
	Construction commitments:
	As of December 31, 2013, the Company had construction commitments in the amount of $80.8 million.
	Letter of credit commitments:
	As of December 31, 2013, the Company had outstanding letters of credit, primarily to satisfy workers’ compensation, general liability and other insurance policies, in the amount of $51.7 million (see Note 5).
	Debt financing commitments:
	The Company’s senior notes are redeemable in whole, at any time, or in part, from time to time, at the Company’s option upon not less than 30 nor more than 60 days’ notice at a redemption price, plus any accrued and unpaid interest to, but not including the redemption date, equal to the greater of (i) 100% of the principal amount thereof or (ii) the sum of the present value of the remaining scheduled payments of principal and interest thereon discounted to the redemption date on a semiannual basis at the applicable Treasury Yield plus basis points identified in the indentures governing the notes. In addition, if at any time the Company undergoes a Change of Control Triggering Event (as defined in the indentures governing the notes), the holders may require the Company to repurchase all or a portion of their senior notes at a price equal to 101% of the principal amount of the notes being repurchased, plus accrued and unpaid interest, if any, to but not including the repurchase date (see Note 5).
	Self-insurance reserves:
	The Company uses a combination of insurance and self-insurance mechanisms to provide for the potential liabilities for Team Member health care benefits, workers’ compensation, vehicle liability, general liability and property loss. With the exception of certain Team Member health care benefit liabilities, employment related claims and litigation, certain commercial litigation and certain regulatory matters, the Company obtains third-party insurance coverage to limit its exposure to this obligation.

Legal_Matters

Legal Matters	12 Months Ended
	Dec. 31, 2013
Loss Contingency [Abstract]	'
Legal matters	'
	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.
	In addition, O’Reilly was involved in resolving governmental investigations that were being conducted against CSK and CSK’s former officers and other litigation, prior to its acquisition by O’Reilly, as described below.
	As previously reported, the governmental investigations of CSK regarding its legacy pre-acquisition accounting practices have concluded. All criminal charges against former employees of CSK related to its legacy pre-acquisition accounting practices, as well as the civil litigation filed against CSK’s former Chief Executive Officer by the SEC, have concluded.
	Under Delaware law, the charter documents of the CSK entities, and certain indemnification agreements, CSK may have certain indemnification obligations. As a result of the CSK acquisition, O’Reilly has incurred legal fees and costs related to these potential indemnification obligations arising from the litigation commenced by the Department of Justice and SEC against CSK’s former employees. Whether those legal fees and costs are covered by CSK’s insurance is subject to uncertainty, and, given its complexity and scope, the final outcome cannot be predicted at this time. O’Reilly has a remaining reserve, with respect to the indemnification obligations of $13.4 million at December 31, 2013, which relates to the payment of those legal fees and costs already incurred. It is possible that in a particular quarter or annual period the Company’s results of operations and cash flows could be materially affected by resolution of such matter, depending, in part, upon the results of operations or cash flows for such period. However, at this time, management believes that the ultimate outcome of this matter, after consideration of applicable reserves, should not have a material adverse effect on the Company’s consolidated financial condition, results of operations or cash flows.

Related_Parties

Related Parties	12 Months Ended
	Dec. 31, 2013
Related Party Transaction [Line Items]	'
Related parties	'
	NOTE 15 – RELATED PARTIES
	The Company leases certain land and buildings related to 77 of its O'Reilly Auto Parts stores and one of its bulk facilities under fifteen- or twenty-year operating lease agreements with entities in which certain of the Company’s affiliated directors, members of an affiliated director’s immediate family or certain of the Company’s executive officers, are affiliated. Generally, these lease agreements provide for renewal options for an additional five years at the option of the Company and the lease agreements are periodically modified to further extend the lease term for specific stores under the agreements. Lease payments under these operating leases totaled $4.4 million, $4.4 million and $4.2 million during the years ended December 31, 2013, 2012 and 2011, respectively. We believe that the lease agreements with the affiliated entities are on terms comparable to those obtainable from third parties. See Note 6 for further information on the Company's operating leases.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Deferred Income Taxes and Tax Credits [Abstract]	'
Income taxes	'
	NOTE 16 – INCOME TAXES
	Deferred income tax assets and liabilities:
	Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes, and also include the tax effect of carryforwards.
	The following table identifies significant components of the Company’s deferred tax assets and liabilities as of December 31, 2013 and 2012 (in thousands):
		December 31,
		2013			2012
	Deferred tax assets:
	Current:
	Allowance for doubtful accounts	$	1,997		$	1,937
	Tax credits	1,636			1,583
	Other accruals	61,100			55,683
	Total current deferred tax assets	64,733			59,203
	Noncurrent:
	Tax credits	5,333			5,333
	Net operating losses	1,180			2,077
	Other accruals	59,176			58,605
	Total noncurrent deferred tax assets	65,689			66,015
	Total deferred tax assets	130,422			125,218
	Deferred tax liabilities:
	Current:
	Inventories	84,955			78,675
	Total current deferred tax liabilities	84,955			78,675
	Noncurrent:
	Property and equipment	131,851			132,547
	Other	14,551			13,012
	Total noncurrent deferred tax liabilities	146,402			145,559
	Total deferred tax liabilities	231,357			224,234
	Net deferred tax liabilities	$	(100,935	)	$	(99,016	)
	The following table reconciles the above net deferred tax assets (liabilities) as presented on the accompanying Consolidated Balance Sheets as of December 31, 2013 and 2012 (in thousands):
		December 31,
		2013			2012
	Deferred tax assets - current	$	64,733		$	59,203
	Deferred tax liabilities - current	(84,955		)	(78,675		)
	Deferred tax liabilities - current	$	(20,222	)	$	(19,472	)
	Deferred tax assets - noncurrent	65,689			66,015
	Deferred tax liabilities - noncurrent	(146,402		)	(145,559		)
	Deferred tax liabilities - noncurrent	$	(80,713	)	$	(79,544	)
	Net deferred tax liabilities	$	(100,935	)	$	(99,016	)
	Provision for income taxes:
	The following table reconciles the “Provision for income taxes” included in the accompanying Consolidated Statements of Income for the years ended December 31, 2013, 2012 and 2011 (in thousands):
		Current			Deferred			Total
	2013
	Federal	$	348,303		$	847		$	349,150
	State	38,428			1,072			39,500
		$	386,731		$	1,919		$	388,650
	2012
	Federal	$	311,631		$	10,030		$	321,661
	State	35,982			(1,868		)	34,114
		$	347,613		$	8,162		$	355,775
	2011
	Federal	$	228,443		$	55,175		$	283,618
	State	25,537			(1,055		)	24,482
		$	253,980		$	54,120		$	308,100
	The following table outlines the reconciliation of the “Provision for income taxes” amounts included in the accompanying Consolidated Statements of Income to the amounts computed at the federal statutory rate for the years ended December 31, 2013, 2012 and 2011 (in thousands):
		For the Year Ended December 31,
		2013			2012			2011
	Federal income taxes at statutory rate	$	370,632		$	329,532		$	285,524
	State income taxes, net of federal tax benefit	26,802			22,426			16,132
	Other items, net	(8,784		)	3,817			6,444
	Total provision for income taxes	$	388,650		$	355,775		$	308,100
	The excess tax benefit associated with the exercise of non-qualified stock options has been included within “Additional paid-in capital” on the accompanying consolidated financial statements.
	As of December 31, 2013, the Company had tax credit carryforwards available for state tax purposes, net of federal impact, of $7.0 million. As of December 31, 2013, the Company had net operating loss carryforwards available for state purposes of $23.2 million. The Company’s state net operating loss carryforwards generally expire in years ranging from 2021 to 2027, and the Company’s tax credits generally expire in 2024.
	CSK had net operating losses in various years dating back to the tax year 1993. For CSK, the statute of limitation for a particular tax year for examination by the IRS is three years subsequent to the last year in which the loss carryover is finally used. The IRS completed an examination of the CSK consolidated federal tax return for the fiscal years ended January 30, 2005, January 29, 2006, February 4, 2007 and February 2, 2008. The statute of limitation for a particular tax year for examination by various states is generally three to four years subsequent to the last year in which the loss carryover is finally used.
Unrecognized tax benefits:
The following table summarizes the changes in the gross amount of unrecognized tax benefits, excluding interest and penalties, for the years ended December 31, 2013, 2012 and 2011 (in thousands):
	For the Year Ended December 31,
	2013			2012			2011
Balance as of January 1,	$	51,004		$	45,800		$	36,710
Additions based on tax positions related to the current year	7,046			8,100			7,308
Additions based on tax positions related to prior years	—			1,301			4,060
Payments related to items settled with taxing authorities	(1,056		)	(451		)	—
Reductions due to the lapse of statute of limitations and settlements	(6,535		)	(3,746		)	(2,278		)
Balance as of December 31,	$	50,459		$	51,004		$	45,800
For the years ended December 31, 2013, 2012 and 2011, the Company recorded a reserve for unrecognized tax benefits (including interest and penalties) of $58.6 million, $59.3 million and $53.0 million, respectively. All of the unrecognized tax benefits recorded as of December 31, 2013, would affect the Company’s effective tax rate if recognized, generally net of the federal tax effect of approximately $16.6 million. The Company recognizes interest and penalties related to uncertain tax positions in income tax expense. As of the years ended December 31, 2013, 2012 and 2011, the Company had accrued approximately $8.1 million, $8.3 million and $7.2 million, respectively, of interest and penalties related to uncertain tax positions before the benefit of the deduction for interest on state and federal returns. During the years ended December 31, 2013, 2012 and 2011, the Company recorded tax expense related to an increase in its liability for interest and penalties of $2.1 million, $2.6 million and $3.9 million, respectively. Although unrecognized tax benefits for individual tax positions may increase or decrease during 2014, the Company expects a reduction of $4.3 million of unrecognized tax benefits during the one-year period subsequent to December 31, 2013, resulting from settlement or expiration of the statute of limitations.
The Company’s United States federal income tax returns for tax years 2011 and beyond remain subject to examination by the Internal Revenue Service (“IRS”). The IRS concluded an examination of the O'Reilly consolidated 2008, 2009 and 2010 federal income tax returns in the first quarter of 2013. The statute of limitations for the Company’s federal income tax returns for tax years 2009 and prior expired on September 15, 2013. The statute of limitations for the Company’s U.S. federal income tax return for 2010 will expire on September 15, 2014, unless otherwise extended. The IRS is currently conducting an examination of the Company’s consolidated returns for the tax year 2011. The Company’s state income tax returns remain subject to examination by various state authorities for tax years ranging from 2002 through 2012.

Earnings_Per_Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Earnings per share	'
	EARNINGS PER SHARE
	The following table reconciles the numerator and denominator used in the basic and diluted earnings per share calculations for the years ended December 31, 2013, 2012 and 2011 (in thousands, except per share data):
		For the Year Ended December 31,
		2013		2012		2011
	Numerator (basic and diluted):
	Net income	$	670,292	$	585,746	$	507,673
	Denominator:
	Denominator for basic earnings per share - weighted-average shares	109,244		121,182		134,667
	Effect of stock options (1)	1,857		2,132		2,316
	Denominator for diluted earnings per share - weighted-average shares	111,101		123,314		136,983
	Earnings per share:
	Earnings per share-basic	$	6.14	$	4.83	$	3.77
	Earnings per share-assuming dilution	$	6.03	$	4.75	$	3.71
	Antidilutive common stock equivalents not included in the calculation of diluted earnings per share:
	Stock options (1)	498		1,816		1,756
	Weighted-average exercise price per share of antidilutive stock options (1)	$	103.8	$	87.88	$	62.79
	(1)	See Note 12 for further discussion on the terms of the Company's share-based compensation plans.
	Subsequent to the end of the year and through February 28, 2014, the Company did not repurchase a material number of shares of its common stock.

Quarterly_Results_Unaudited

Quarterly Results (Unaudited)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Data [Abstract]	'
Quarterly results (unaudited)	'
	QUARTERLY RESULTS (Unaudited)
	The following table sets forth certain quarterly unaudited operating data for the fiscal years ended December 31, 2013 and 2012. The unaudited quarterly information includes all adjustments, which the Company considers necessary for a fair presentation of the information shown:
		Fiscal 2013
		First		Second		Third		Fourth
		Quarter		Quarter		Quarter		Quarter
		(In thousands, except per share data)
	Sales	$	1,585,009	$	1,714,969	$	1,728,025	$	1,621,234
	Gross profit	798,663		871,875		879,163		819,300
	Operating income	251,084		296,261		300,380		255,760
	Net income	154,329		177,127		186,489		152,347
	Earnings per share – basic (1)	$	1.38	$	1.61	$	1.72	$	1.43
	Earnings per share – assuming dilution (1)	$	1.36	$	1.58	$	1.69	$	1.4
		Fiscal 2012
		First		Second		Third		Fourth
		Quarter		Quarter		Quarter		Quarter
		(In thousands, except per share data)
	Sales	$	1,529,392	$	1,562,849	$	1,601,558	$	1,488,385
	Gross profit	761,680		779,861		805,493		750,384
	Operating income	247,501		243,603		263,318		222,971
	Net income	147,492		146,120		159,332		132,802
	Earnings per share – basic (1)	$	1.16	$	1.17	$	1.34	$	1.16
	Earnings per share – assuming dilution (1)	$	1.14	$	1.15	$	1.32	$	1.14
	(1)	Earnings per share amounts are computed independently for each quarter and annual period. The quarterly earnings per share amounts may not sum to equal the full-year earnings per share.
	The unaudited operating data presented above should be read in conjunction with the Company’s consolidated financial statements and related notes, and the other financial information included therein.

Schedule_II_Valuation_and_Qual

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2013
Valuation and Qualifying Accounts [Abstract]	'
Schedule II - valuation and qualifying accounts	'
	SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
	O’REILLY AUTOMOTIVE, INC. AND SUBSIDIARIES
	Column A		Column B		Column C					Column D			Column E
	Description		Balance at Beginning of Period		Additions - Charged to Costs and Expenses			Additions - Charged to Other Accounts - Describe		Deductions - Describe			Balance at End of Period
	(amounts in thousands)
	Sales and returns allowances
	For the year ended December 31, 2013		$	7,326	$	(826	)	$	—	$	—		$	6,500
	For the year ended December 31, 2012		6,406		920			—		—			7,326
	For the year ended December 31, 2011		5,634		772			—		—			6,406
	Allowance for doubtful accounts
	For the year ended December 31, 2013		$	6,447	$	8,499		$	—	$	8,285	(1)	$	6,661
	For the year ended December 31, 2012		6,403		8,043			—		7,999		(1)	6,447
	For the year ended December 31, 2011		8,349		7,695			—		9,641		(1)	6,403
	(1)	Uncollectable accounts written off.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2013
Policy Text Block [Abstract]	'
Nature of business	'
	Nature of business:
	O'Reilly Automotive, Inc. (“O’Reilly” or the “Company”) is a specialty retailer and supplier of automotive aftermarket parts. The Company’s stores carry an extensive product line, including new and remanufactured automotive hard parts, maintenance items and various automotive accessories. As of December 31, 2013, the Company owned and operated 4,166 stores in 42 states, servicing both the do-it-yourself (“DIY”) customer and the professional service provider. The Company’s robust distribution system provides stores with same-day or overnight access to an extensive inventory of hard-to-find items not typically stocked in the stores of other auto parts retailers.
Segment reporting	'
	Segment reporting:
	The Company is managed and operated by a single management team reporting to the chief operating decision maker. O'Reilly stores have similar characteristics including the nature of the products and services, the type and class of customers and the methods used to distribute products and provide service to its customers and, as a whole, make up a single operating segment. The Company does not prepare discrete financial information with respect to product lines or geographic locations and as such has one reportable segment.
Principles of consolidation	'
	Principles of consolidation:
	The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant inter-company balances and transactions have been eliminated in consolidation.
Use of estimates	'
	Use of estimates:
	The preparation of the consolidated financial statements, in conformity with accounting principles generally accepted in the United States (“GAAP”), requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could materially differ from those estimates.
Cash equivalents	'
	Cash equivalents:
	Cash equivalents include investments with maturities of 90 days or less on the date of purchase.
Accounts receivable	'
	Accounts receivable:
	The Company maintains allowances for doubtful accounts for estimated losses resulting from the inability of the Company’s customers to make required payments. The Company considers the following factors when determining if collection is reasonably assured: customer creditworthiness, past transaction history with the customer, current economic and industry trends and changes in customer payment terms. Amounts due to the Company from its Team Members are included as a component of accounts receivable. These amounts consist primarily of purchases of merchandise on Team Member accounts. Accounts receivable due from Team Members was approximately $1.0 million and $2.1 million as of December 31, 2013 and 2012, respectively.
	The Company grants credit to certain customers who meet the Company’s pre-established credit requirements. Concentrations of credit risk with respect to these receivables are limited because the Company’s customer base consists of a large number of small customers, spreading the credit risk across a broad base. The Company also controls this credit risk through credit approvals, credit limits and accounts receivable and credit monitoring procedures. Generally, the Company does not require security when credit is granted to customers. Credit losses are provided for in the Company’s consolidated financial statements and have consistently been within management’s expectations.
Amounts receivable from vendors	'
	Amounts receivable from vendors:
	The Company receives concessions from its vendors through a variety of programs and arrangements, including allowances for new stores and warranties, volume purchase rebates and co-operative advertising. Co-operative advertising allowances that are incremental to the Company’s advertising program, specific to a product or event and identifiable for accounting purposes, are reported as a reduction of advertising expense in the period in which the advertising occurred. All other vendor concessions are recognized as a reduction to the cost of inventory. Amounts receivable from vendors also includes amounts due to the Company for changeover merchandise and product returns. The Company regularly reviews vendor receivables for collectability and assesses the need for a reserve for uncollectable amounts based on an evaluation of the Company’s vendors’ financial positions and corresponding abilities to meet financial obligations. Management does not believe there is a reasonable likelihood that the Company will be unable to collect the amounts receivable from vendors and the Company did not record a reserve for uncollectable amounts from vendors in the consolidated financial statements as of December 31, 2013 or 2012.
Inventory	'
	Inventory:
	Inventory, which consists of automotive hard parts, maintenance items, accessories and tools, is stated at the lower of cost or market. Inventory also includes capitalized costs related to procurement, warehousing and distribution centers (“DCs”). Cost has been determined using the last-in, first-out (“LIFO”) method, which more accurately matches costs with related revenues. Over time, as the Company's merchandise inventory purchases have increased, this has resulted in improved acquisition costs from its suppliers and the corresponding price deflation exhausted the Company's LIFO reserve balance during the year ended December 31, 2013. The Company's policy is not to write up the value of its inventory in excess of its replacement cost. Accordingly, the Company's merchandise inventory is effectively being recorded at replacement cost as of December 31, 2013. The replacement cost of inventory was $2.38 billion and $2.31 billion as of December 31, 2013 and 2012, respectively. LIFO costs exceeded replacement costs by $21.6 million at December 31, 2013.
Property and equipment	'
	Property and equipment:
	Property and equipment are carried at cost. Depreciation is calculated using the straight-line method generally over the estimated useful lives of the assets. Leasehold improvements are amortized over the lesser of the lease term or the estimated economic life of the assets. The lease term includes renewal options determined by management at lease inception for which failure to execute renewal options would result in a substantial economic penalty to the Company. Maintenance and repairs are charged to expense as incurred. Upon retirement or sale, the cost and accumulated depreciation are eliminated and the gain or loss, if any, is included as a component of “Other income (expense)” in the Company’s Consolidated Statements of Income. The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be fully recoverable.
Notes receivable	'
	Notes receivable:
	The Company had notes receivable from vendors and other third parties amounting to $17.2 million and $9.5 million at December 31, 2013 and 2012, respectively. The notes receivable, which bear interest at rates ranging from 0% to 10%, are due in varying amounts through March of 2019. Interest income on notes receivable is recorded in accordance with the note terms to the extent that such amounts are expected to be collected. The Company regularly reviews its notes receivable for collectability and assesses the need for a reserve for uncollectable amounts based on an evaluation of the Company’s borrowers’ financial positions and corresponding abilities to meet financial obligations. Management does not believe there is a reasonable likelihood that the Company will be unable to collect the notes receivable and the Company did not record a reserve for uncollectable notes receivable in the consolidated financial statements as of December 31, 2013 or 2012.
Goodwill and other intangibles	'
	Goodwill and other intangibles:
	The accompanying Consolidated Balance Sheets at December 31, 2013 and 2012, include goodwill and other intangible assets recorded as the result of acquisitions. The Company reviews goodwill for impairment annually during the fourth quarter, or when events or changes in circumstances indicate the carrying value of these assets might exceed their current fair values, rather than systematically amortizing goodwill against earnings. During 2013 and 2012, the goodwill impairment test included a quantitative assessment, which compared the fair value of the reporting unit to its carrying amount, including goodwill. The Company operates as a single reporting unit, and the Company determined that its fair value exceeded its carrying value, including goodwill, as of December 31, 2013 and 2012; as such, no goodwill impairment adjustment was required as of December 31, 2013 and 2012. Finite-lived intangibles are carried at cost. Amortization is calculated using the straight-line method, generally over the estimated useful lives of the intangibles.
Impairment of long-lived assets	'
	Impairment of long-lived assets:
	The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. When such an event occurs, the Company compares the sum of the undiscounted expected future cash flows of the asset (asset group) with the carrying amounts of the asset. If the undiscounted expected future cash flows are less than the carrying value of the assets, the Company measures the amount of impairment loss as the amount by which the carrying amount of the assets exceeds the fair value of the assets. The Company has not historically recorded any material impairment to its long-lived assets and the Company did not record an impairment to its long-lived assets during the year ended December 31, 2013 or 2012.
Self-insurance reserves	'
	Self-insurance reserves:
	The Company uses a combination of insurance and self-insurance mechanisms to provide for potential liabilities for Team Member health care benefits, workers’ compensation, vehicle liability, general liability and property loss. With the exception of certain Team Member health care benefit liabilities, employment related claims and litigation, certain commercial litigation and certain regulatory matters, the Company obtains third-party insurance coverage to limit its exposure.
Warranties	'
	Warranties:
	The Company offers 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 vendors. Certain vendors 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 vendor 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.
Litigation reserves	'
	Litigation reserves:
	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 on pending litigation matters. Although the Company cannot ascertain the total amount of liability that it may incur from any of these matters, the Company does not currently believe that in the aggregate, taking into account applicable insurance coverage, these matters will have a material adverse effect on its consolidated financial position, results of operations or cash flows. In addition, O’Reilly was involved in resolving legacy governmental investigations and litigation commenced by the Department of Justice (“DOJ”) and Securities and Exchange Commission (“SEC”) against CSK Automotive Corporation (“CSK”) and certain former CSK employees arising out of alleged conduct relating to periods prior to the Company’s acquisition of CSK in 2008; as a result, O’Reilly incurred legal fees and costs related to potential indemnification obligations.
Closed property liabilities	'
	Closed property liabilities:
	The Company maintains reserves for closed stores and other properties that are no longer being utilized in current operations. The Company provides for these liabilities using a credit-adjusted discount rate to calculate the present value of the remaining non-cancelable lease payments, occupancy costs and lease termination fees after the close date, net of estimated sublease income. In conjunction with the acquisition of CSK, the Company’s reserves include purchase accounting liabilities related to acquired properties that were no longer being utilized in the acquired business as well as the Company’s planned exit activities.
Derivative instruments and hedging activities	'
	Derivative instruments and hedging activities:
	The Company’s accounting policies for derivative financial instruments are based on whether the instruments meet the criteria for designation as cash flow or fair value hedges. The criteria for designating a derivative as a hedge include the assessment of the instrument’s effectiveness in risk reduction, matching of the derivative instrument to its underlying transaction and the probability that the underlying transaction will occur. A designated hedge of the exposure to variability in the future cash flows of an asset or a liability qualifies as a cash flow hedge. A designated hedge of the exposure to changes in fair value of an asset or a liability qualifies as a fair value hedge. For derivatives with cash flow hedge accounting designation, the Company would recognize the after-tax gain or loss from the effective portion of the hedge as a component of “Accumulated other comprehensive loss” and would reclassify it into earnings in the same period or periods in which the hedged transaction affects earnings, and within the same income statement line item as the impact of the hedged transaction. For derivatives with fair value hedge accounting designation, the Company would recognize gains or losses from the change in fair value of these derivatives, as well as the offsetting change in the fair value of the underlying hedged item, in earnings. As of December 31, 2013 and 2012, the Company did not hold any instruments that qualified as cash flow or fair value hedge derivatives.
Share repurchases	'
	Share repurchases:
	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. All shares repurchased under the share repurchase program are retired and recorded under the par value method on the accompanying Consolidated Balance Sheets.
Revenue recognition	'
	Revenue recognition:
	Over-the-counter retail sales are recorded when the customer takes possession of the merchandise. Sales to professional service provider customers, also referred to as “commercial sales,” are recorded upon same-day delivery of the merchandise to the customer, generally at the customer’s place of business. Wholesale sales to other retailers, also referred to as “jobber sales,” are recorded upon shipment of the merchandise from a regional DC with same-day delivery to the jobber customer's location. Internet retail sales are recorded when the merchandise is shipped or when the merchandise is picked up in a store. All sales are recorded net of estimated returns allowances, discounts and taxes.
Cost of goods sold and selling, general and administrative expenses	'
	Cost of goods sold and selling, general and administrative expenses:
	The following table illustrates the primary costs classified in each major expense category:
	Cost of goods sold, including warehouse and distribution expenses	Selling, general and administrative expenses
	Total cost of merchandise sold, including:	Payroll and benefit costs for store and corporate Team Members
	Freight expenses associated with acquiring merchandise and with moving merchandise inventories from the Company's distribution centers to the stores	Occupancy costs of store and corporate facilities
	Defective merchandise and warranty costs	Depreciation and amortization related to store and corporate assets
	Vendor allowances and incentives, including:	Vehicle expenses for store delivery services
	Allowances that are not reimbursements for specific, incremental and identifiable costs	Self-insurance costs
	Cash discounts on payments to vendors	Closed store expenses
	Costs associated with the Company's supply chain, including:	Other administrative costs, including:
	Payroll and benefit costs	Accounting, legal and other professional services
	Warehouse occupancy costs	Bad debt, banking and credit card fees
	Transportation costs	Supplies
	Depreciation	Travel
	Inventory shrinkage	Advertising costs
Operating leases	'
	Operating leases:
	The Company recognizes rent expense on a straight-line basis over the lease terms of its stores and DCs. Generally, the lease term for stores is the base lease term and the lease term for DCs includes the base lease term plus certain renewal option periods for which renewal is reasonably assured and failure to exercise the renewal option would result in a significant economic penalty. The Company’s policy is to amortize leasehold improvements associated with the Company’s operating leases over the lesser of the lease term or the estimated economic life of those assets.
Advertising expenses	'
	Advertising expenses:
	Advertising expense consists primarily of expenses related to the Company’s integrated marketing program, which includes television, radio, direct mail and newspaper distribution, in-store and online promotions, and sports and event sponsorships. The Company expenses advertising costs as incurred. The Company also participates in cooperative advertising arrangements with certain of its vendors. Advertising expense, net of cooperative advertising allowances from vendors that were incremental to the specific advertising program and identifiable, included as a component of “Selling, general and administrative expenses” (“SG&A”) on the accompanying Consolidated Statements of Income amounted to $78.3 million, $74.8 million and $73.8 million for the years ended December 31, 2013, 2012 and 2011, respectively.
Share-based compensation and benefit plans	'
	Share-based compensation and benefit plans:
	The Company sponsors employee share-based benefit plans and employee and director share-based compensation plans. The Company recognizes compensation expense for its share-based plans based on the fair value of the awards on the date of the grant, award or issuance. Share-based plans include stock option awards issued under the Company’s employee incentive plans, director stock plan, stock issued through the Company’s employee stock purchase plan and stock awarded to employees and directors through other compensation plans.
Pre-opening expenses	'
	Pre-opening expenses:
	Costs associated with the opening of new stores, which consist primarily of payroll and occupancy costs, are charged to SG&A as incurred. Costs associated with the opening of new distribution centers, which consist primarily of payroll and occupancy costs, are included as a component of “Cost of goods sold, including warehouse and distribution expenses” on the accompanying Consolidated Statements of Income as incurred.
Interest expense	'
	Interest expense:
	The Company capitalizes interest costs as a component of construction in progress, based on the weighted-average interest rates incurred on its long-term borrowings. Total interest costs capitalized for the years ended December 31, 2013, 2012 and 2011, were $10.6 million, $6.1 million and $4.7 million, respectively.
	In conjunction with the issuance or amendment of long-term debt instruments, the Company incurs various costs including debt registration fees, accounting and legal fees and underwriter and book runner fees. These debt issuance costs have been deferred and are being amortized over the term of the corresponding debt issue and the amortization expense is included as a component of “Interest expense” in the accompanying Consolidated Statements of Income. Deferred debt issuance costs totaled $11.5 million and $10.1 million, net of amortization, as of December 31, 2013 and 2012, respectively, of which $1.6 million and $1.5 million were included within “Other current assets” on the accompanying Consolidated Balance Sheets as of December 31, 2013 and 2012, with the remainder included within “Other assets, net” on the accompanying Consolidated Balance Sheets as of December 31, 2013 and 2012.
Income taxes	'
	Income taxes:
	The Company accounts for income taxes using the liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined based on differences between the GAAP basis and tax basis of assets and liabilities using enacted tax rules and rates currently scheduled to be in effect for the year in which the differences are expected to reverse. Tax carry forwards are also recognized in deferred tax assets and liabilities under this method. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period of the enactment date. The Company would record a valuation allowance against deferred tax assets to the extent it is more likely than not the amount will not be realized, based upon evidence available at the time of the determination and any change in the valuation allowance is recorded in the period of a change in such determination. The Company did not establish a valuation allowance for deferred tax assets as of December 31, 2013 and 2012, as it was considered more likely than not that deferred tax assets were realizable through a combination of future taxable income, the realization of deferred tax liabilities and tax planning strategies. The Company regularly reviews its potential tax liabilities for tax years subject to audit. The amount of such liabilities is based on various factors, such as differing interpretations of tax regulations by the responsible tax authority, experience with previous tax audits and applicable tax law rulings. Changes in the Company’s tax liability may occur in the future as its assessments change based on the progress of tax examinations in various jurisdictions and/or changes in tax regulations. In management’s opinion, adequate provisions for income taxes have been made for all years presented. The estimates of the Company’s potential tax liabilities contain uncertainties because management must use judgment to estimate the exposures associated with the Company’s various tax positions and actual results could differ from estimates.
Earnings per share	'
	Earnings per share:
	Basic earnings per share is calculated by dividing net income by the weighted average number of common shares outstanding during the fiscal period. Diluted earnings per share is calculated by dividing the weighted-average number of common shares outstanding plus, the common stock equivalents associated with the potential impact of dilutive stock options. Certain common stock equivalents that could potentially dilute basic earnings per share in the future, were not included in the fully diluted computation because they would have been antidilutive. Generally, stock options are antidilutive and excluded from the earnings per share calculation when the exercise price exceeds the market price of the common shares.
New accounting pronouncements	'
	New accounting pronouncements:
	In July of 2013, the FASB issued ASU No. 2013-11, “Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists” (“ASU 2013-11”). Under ASU 2013-11, an entity is required to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward. If a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. ASU 2013-11 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. The Company will adopt this guidance beginning with its first quarter ending March 31, 2014; the application of this guidance affects presentation only and, therefore, it is not expected to have a material impact on the Company’s consolidated financial condition, results of operations or cash flows.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Policy Text Block [Abstract]	'
Components of self-insurance reserves	'
		December 31,
		2013		2012
	Self-insurance reserves (undiscounted)	$	126,715	$	122,866
	Self-insurance reserves (discounted)	$	116,062	$	111,840

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]	'
Valuation of senior notes	'
		December 31, 2013				December 31, 2012
		Carrying		Estimated Fair Value		Carrying		Estimated Fair Value
		Amount				Amount
	4.875% Senior Notes due 2021	$	497,525	$	524,434	$	497,173	$	559,870
	4.625% Senior Notes due 2021	$	299,598	$	310,141	$	299,545	$	331,224
	3.800% Senior Notes due 2022	$	299,011	$	290,453	$	298,916	$	313,890
	3.850% Senior Notes due 2023	$	299,976	$	289,362	$	—	$	—

Property_and_Equipment_Tables

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property and equipment, including original useful lives	'
		Original Useful Lives	December 31, 2013		December 31, 2012
	Land		$	457,858	$	420,292
	Buildings and building improvements	15 – 39 years	1,197,369		1,078,265
	Leasehold improvements	3 – 25 years	483,578		447,046
	Furniture, fixtures and equipment	3 – 20 years	960,928		932,406
	Vehicles	5 – 10 years	251,505		231,615
	Construction in progress		255,599		159,946
	Total property and equipment		3,606,837		3,269,570
	Less: accumulated depreciation and amortization		1,181,734		1,057,980
	Net property and equipment		$	2,425,103	$	2,211,590

Goodwill_and_Other_Intangibles1

Goodwill and Other Intangibles (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Change in goodwill	'
	Balance at December 31, 2011	$	743,907
	Activity	14,503
	Balance at December 31, 2012	758,410
	Activity	(2,185		)
	Balance at December 31, 2013	$	756,225
Amortizable intangibles	'
		Cost of Amortizable					Accumulated Amortization						Net Amortizable Intangibles
		Intangibles					(Expense) Benefit
		December 31,			December 31,		December 31,			December 31,			December 31,		December 31,
		2013			2012		2013			2012			2013		2012
	Amortizable intangible assets:
	Favorable leases	$	50,910		$	50,910	$	(32,463	)	$	(28,566	)	$	18,447	$	22,344
	Non-compete agreements	647			717		(428		)	(447		)	219		270
	Total amortizable intangible assets	$	51,557		$	51,627	$	(32,891	)	$	(29,013	)	$	18,666	$	22,614
	Unfavorable leases	$	49,380		$	49,380	$	36,758		$	32,210		$	12,622	$	17,170
Estimated net amortization of intangibles	'
		Amortization Expense			Amortization Benefit		Total Amortization (Expense) Benefit
	2014	$	(3,109	)	$	3,642	$	533
	2015	(2,679		)	2,794		115
	2016	(2,323		)	2,076		(247		)
	2017	(1,907		)	1,493		(414		)
	2018	(1,444		)	923		(521		)
	Total	$	(11,462	)	$	10,928	$	(534	)

Financing_Tables

Financing (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Outstanding financing facilities	'
		December 31,
		2013			2012
	Revolving Credit Facility	—			—
	4.875% Senior Notes due 2021 (1), effective interest rate of 4.970%	497,525			497,173
	4.625% Senior Notes due 2021 (2), effective interest rate of 4.649%	299,598			299,545
	3.800% Senior Notes due 2022 (3), effective interest rate of 3.845%	299,011			298,916
	3.850% Senior Notes due 2023 (4), effective interest rate of 3.851%	299,976			—
	(1)	Net of unamortized discount of $2.5 million and $2.8 million as of December 31, 2013 and 2012, respectively.
	(2)	Net of unamortized discount of $0.4 million and $0.5 million as of December 31, 2013 and 2012, respectively.
	(3)	Net of unamortized discount of $1.0 million and $1.1 million as of December 31, 2013 and 2012, respectively.
	(4)	Net of unamortized discount of less than $0.1 million as of December 31, 2013.
Principal maturities of financing facilities	'
			Scheduled Maturities
	2014		$	—
	2015		—
	2016		—
	2017		—
	2018		—
	Thereafter		1,400,000
	Total		$	1,400,000

Leasing_Tables

Leasing (Tables)	12 Months Ended
	Dec. 31, 2013
Leases [Abstract]	'
Future minimum lease payments for operating leases and capital leases	'
		Operating Leases				Capital Leases
		Related Parties		Non-Related Parties		Non-Related Parties		Total
	2014	$	4,555	$	242,571	$	77	$	247,203
	2015	4,621		228,364		26		233,011
	2016	4,633		208,269		—		212,902
	2017	4,405		186,686		—		191,091
	2018	4,196		160,049		—		164,245
	Thereafter	11,331		881,810		—		893,141
	Total	$	33,741	$	1,907,749	$	103	$	1,941,593
Schedule of net rent expense	'
		For the Year Ended December 31,
		2013		2012		2011
	Minimum operating lease expense	$	247,039	$	234,113	$	226,158
	Contingent rents	701		744		534
	Other lease related occupancy costs	11,257		10,043		8,821
	Total rent expense	258,997		244,900		235,513
	Less: sublease income	4,105		4,031		4,616
	Net rent expense	$	254,892	$	240,869	$	230,897

Exit_Activities_Tables

Exit Activities (Tables)	12 Months Ended
	Dec. 31, 2013
Restructuring Charges [Abstract]	'
Summary of closure reserves for stores, administrative office and distribution facilities	'
		Store Closure			Administrative Office and Distribution Facilities Closure Liabilities
		Liabilities
	Balance at December 31, 2011	$	11,312		$	3,544
	Additions and accretion	584			170
	Payments	(2,998		)	(2,038		)
	Revisions to estimates	(561		)	—
	Balance at December 31, 2012	8,337			1,676
	Additions and accretion	459			105
	Payments	(2,458		)	(422		)
	Revisions to estimates	(499		)	—
	Balance at December 31, 2013	$	5,839		$	1,359

Derivative_Instruments_and_Hed1

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Effect of derivative financial instruments on Consolidated Statements of Income	'
		Location and Amount of Loss Recognized in Income on Derivatives
	Derivatives Designated as Hedging Instruments		For the Year Ended December 31,
		Classification	2013		2012		2011
	Interest rate swap contracts	Other income (expense)	$	—	$	—	$	(4,237	)

Warranties_Tables

Warranties (Tables)	12 Months Ended
	Dec. 31, 2013
Product Warranties Disclosures [Abstract]	'
Product warranty liabilities	'
		2013			2012
	Balance at January 1,	$	28,001		$	21,642
	Warranty claims	(50,859		)	(50,009		)
	Warranty accruals	56,244			56,368
	Balance at December 31,	$	33,386		$	28,001

Share_Repurchase_Program_Table

Share Repurchase Program (Tables)	12 Months Ended
	Dec. 31, 2013
Proceeds from (Repurchase of) Equity [Abstract]	'
Schedule of shares repurchased	'
		For the Year Ended December 31,
		2013		2012
	Shares repurchased	8,529		16,201
	Average price per share	$	109.38	$	89.2
	Total investment	$	932,900	$	1,445,044

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]	'
Schedule of amounts reclassified from Accumulated other comprehensive loss	'
	Affected Line Item in the Consolidated Statements of Income	Amount Reclassified from Accumulated Other Comprehensive Loss
	Unrealized loss on cash flow hedges:
	Termination of interest rate swap agreements, before tax	$	4,237
	Tax expense	(1,267		)
	Net of tax as of December 31, 2011	$	2,970

ShareBased_Compensation_and_Be1

Share-Based Compensation and Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2013
Summary of shares authorized and available for future issuance under compensation and benefit plans	'
	Plans		Total Shares Authorized for Issuance under the Plans			Shares Available for Future
						Issuance under the Plans
	Employee Incentive Plans		34,000			6,711
	Director Stock Plan		1,000			267
	Performance Incentive Plan		650			378
	Employee Stock Purchase Plans		4,250			901
	Profit Sharing and Savings Plan		4,200			349
Restricted Stock [Member]	'
Summary of activity of share-based employee compensation plans and other compensation and benefit plans	'
		For the Year Ended December 31,
		2013				2012				2011
	Compensation expense for restricted shares awarded (in millions)	$	2.2			$	2			$	1.7
	Income tax benefit from compensation expense related to restricted shares (in millions)	$	0.8			$	0.8			$	0.6
	Total fair value of restricted shares at vest date (in millions)	$	3.3			$	2.7			$	2.6
	Shares awarded under the plans (in thousands)	21.2				23.7				49.9
	Average grant-date fair value of shares awarded under the plans	$	102.63			$	90.1			$	56.18
Director [Member]	'
Summary of stock options	'
		Shares			Weighted-Average Exercise Price				Average Remaining Contractual Terms		Aggregate
		(in thousands)							(in years)		Intrinsic Value
											(in thousands)
	Outstanding at December 31, 2012	68			$	35.03
	Granted	—			—
	Exercised	(18	)		28.54
	Forfeited	—			—
	Outstanding at December 31, 2013	50			$	37.37			2.5		$	4,567
	Vested or expected to vest at December 31, 2013	50			$	37.37			2.5		$	4,567
	Exercisable at December 31, 2013	50			$	37.37			2.5		$	4,567
Director [Member] | Restricted Stock [Member]	'
Summary of restricted stock	'
		Shares			Weighted-Average Grant-Date Fair Value
		(in thousands)
	Non-vested at December 31, 2012	10			$	79.58
	Granted during the period	5			109.45
	Vested during the period	(4	)		75.39
	Forfeited during the period	—			—
	Non-vested at December 31, 2013	11			$	94.18
Employee Stock [Member]	'
Summary of stock options	'
		Shares			Weighted-Average Exercise Price				Average Remaining Contractual Terms		Aggregate
		(in thousands)							(in years)		Intrinsic Value
											(in thousands)
	Outstanding at December 31, 2012	6,721			$	51.03
	Granted	363			105.11
	Exercised	(1,375	)		43.09
	Forfeited	(532	)		76.77
	Outstanding at December 31, 2013	5,177			$	54.28			6.1		$	385,330
	Vested or expected to vest at December 31, 2013	4,909			$	52.87			6		$	372,291
	Exercisable at December 31, 2013	3,169			$	36.92			4.8		$	290,911
Employee Stock [Member] | Restricted Stock [Member]	'
Summary of restricted stock	'
		Shares			Weighted-Average Grant-Date Fair Value
		(in thousands)
	Non-vested at December 31, 2012	27			$	70.64
	Granted during the period	16			100.82
	Vested during the period (1)	(22	)		73.67
	Forfeited during the period	(1	)		83.06
	Non-vested at December 31, 2013	20			$	92.02
	(1)	Includes 9 thousand shares withheld to cover employees' taxes upon vesting.
Stock Option [Member]	'
Black-Scholes option pricing model	'
		December 31,
		2013				2012				2011
	Risk free interest rate	0.96	%			0.59	%			1.16	%
	Expected life	5		Years		3.9		Years		3.7		Years
	Expected volatility	31	%			33.5	%			33.3	%
	Expected dividend yield	—	%			—	%			—	%
Summary of activity of share-based employee compensation plans and other compensation and benefit plans	'
		For the Year Ended December 31,
		2013				2012				2011
	Compensation expense for stock options awarded (in millions)	$	17.8			$	18.5			$	17.6
	Income tax benefit from compensation expense related to stock options (in millions)	6.8				7.1				6.8
	Total intrinsic value of stock options exercised (in millions)	95.8				113.6				71.5
	Cash received from exercise of stock options (in millions)	59.7				54.9				50.3
	Weighted-average grant-date fair value of options awarded	$	29.98			$	23.57			$	16.93
	Weighted-average remaining contractual life of exercisable options (in years)	4.77				5.13				5.12
Employee Stock Purchase Plan [Member]	'
Summary of activity of share-based employee compensation plans and other compensation and benefit plans	'
		For the Year Ended December 31,
		2013				2012				2011
	Compensation expense for shares issued under the ESPP (in millions)	$	1.7			$	1.5			$	1.3
	Income tax benefit from compensation expense for shares issued under the ESPP (in millions)	$	0.6			$	0.6			$	0.5
	Shares issued under the ESPP (in thousands)	100.6				114.6				134.5
	Weighted-average price of shares issued under the ESPP	$	95.51			$	75.42			$	53.93

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Deferred Income Taxes and Tax Credits [Abstract]	'
Schedule of deferred tax assets and liabilities	'
		December 31,
		2013			2012
	Deferred tax assets:
	Current:
	Allowance for doubtful accounts	$	1,997		$	1,937
	Tax credits	1,636			1,583
	Other accruals	61,100			55,683
	Total current deferred tax assets	64,733			59,203
	Noncurrent:
	Tax credits	5,333			5,333
	Net operating losses	1,180			2,077
	Other accruals	59,176			58,605
	Total noncurrent deferred tax assets	65,689			66,015
	Total deferred tax assets	130,422			125,218
	Deferred tax liabilities:
	Current:
	Inventories	84,955			78,675
	Total current deferred tax liabilities	84,955			78,675
	Noncurrent:
	Property and equipment	131,851			132,547
	Other	14,551			13,012
	Total noncurrent deferred tax liabilities	146,402			145,559
	Total deferred tax liabilities	231,357			224,234
	Net deferred tax liabilities	$	(100,935	)	$	(99,016	)
Reconciliation of net deferred tax assets (liabilities)	'
		December 31,
		2013			2012
	Deferred tax assets - current	$	64,733		$	59,203
	Deferred tax liabilities - current	(84,955		)	(78,675		)
	Deferred tax liabilities - current	$	(20,222	)	$	(19,472	)
	Deferred tax assets - noncurrent	65,689			66,015
	Deferred tax liabilities - noncurrent	(146,402		)	(145,559		)
	Deferred tax liabilities - noncurrent	$	(80,713	)	$	(79,544	)
	Net deferred tax liabilities	$	(100,935	)	$	(99,016	)
Schedule of components of the provision for income taxes	'
		Current			Deferred			Total
	2013
	Federal	$	348,303		$	847		$	349,150
	State	38,428			1,072			39,500
		$	386,731		$	1,919		$	388,650
	2012
	Federal	$	311,631		$	10,030		$	321,661
	State	35,982			(1,868		)	34,114
		$	347,613		$	8,162		$	355,775
	2011
	Federal	$	228,443		$	55,175		$	283,618
	State	25,537			(1,055		)	24,482
		$	253,980		$	54,120		$	308,100
Reconciliation of the provision for income taxes to the amounts computed at the federal statutory rate	'
		For the Year Ended December 31,
		2013			2012			2011
	Federal income taxes at statutory rate	$	370,632		$	329,532		$	285,524
	State income taxes, net of federal tax benefit	26,802			22,426			16,132
	Other items, net	(8,784		)	3,817			6,444
	Total provision for income taxes	$	388,650		$	355,775		$	308,100
Summary of changes in gross amount of unrecognized tax benefits, excluding interest and penalties	'
		For the Year Ended December 31,
		2013			2012			2011
	Balance as of January 1,	$	51,004		$	45,800		$	36,710
	Additions based on tax positions related to the current year	7,046			8,100			7,308
	Additions based on tax positions related to prior years	—			1,301			4,060
	Payments related to items settled with taxing authorities	(1,056		)	(451		)	—
	Reductions due to the lapse of statute of limitations and settlements	(6,535		)	(3,746		)	(2,278		)
	Balance as of December 31,	$	50,459		$	51,004		$	45,800

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Computation of basic and diluted earnings per share	'
		For the Year Ended December 31,
		2013		2012		2011
	Numerator (basic and diluted):
	Net income	$	670,292	$	585,746	$	507,673
	Denominator:
	Denominator for basic earnings per share - weighted-average shares	109,244		121,182		134,667
	Effect of stock options (1)	1,857		2,132		2,316
	Denominator for diluted earnings per share - weighted-average shares	111,101		123,314		136,983
	Earnings per share:
	Earnings per share-basic	$	6.14	$	4.83	$	3.77
	Earnings per share-assuming dilution	$	6.03	$	4.75	$	3.71
	Antidilutive common stock equivalents not included in the calculation of diluted earnings per share:
	Stock options (1)	498		1,816		1,756
	Weighted-average exercise price per share of antidilutive stock options (1)	$	103.8	$	87.88	$	62.79
	(1)	See Note 12 for further discussion on the terms of the Company's share-based compensation plans.

Quarterly_Results_Unaudited_Ta

Quarterly Results (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Data [Abstract]	'
Quarterly unaudited operating data	'
		Fiscal 2013
		First		Second		Third		Fourth
		Quarter		Quarter		Quarter		Quarter
		(In thousands, except per share data)
	Sales	$	1,585,009	$	1,714,969	$	1,728,025	$	1,621,234
	Gross profit	798,663		871,875		879,163		819,300
	Operating income	251,084		296,261		300,380		255,760
	Net income	154,329		177,127		186,489		152,347
	Earnings per share – basic (1)	$	1.38	$	1.61	$	1.72	$	1.43
	Earnings per share – assuming dilution (1)	$	1.36	$	1.58	$	1.69	$	1.4
		Fiscal 2012
		First		Second		Third		Fourth
		Quarter		Quarter		Quarter		Quarter
		(In thousands, except per share data)
	Sales	$	1,529,392	$	1,562,849	$	1,601,558	$	1,488,385
	Gross profit	761,680		779,861		805,493		750,384
	Operating income	247,501		243,603		263,318		222,971
	Net income	147,492		146,120		159,332		132,802
	Earnings per share – basic (1)	$	1.16	$	1.17	$	1.34	$	1.16
	Earnings per share – assuming dilution (1)	$	1.14	$	1.15	$	1.32	$	1.14
	(1)	Earnings per share amounts are computed independently for each quarter and annual period. The quarterly earnings per share amounts may not sum to equal the full-year earnings per share.

Schedule_II_Valuation_and_Qual1

Schedule II - Valuation and Qualifying Accounts (Tables)	12 Months Ended
	Dec. 31, 2013
Valuation and Qualifying Accounts [Abstract]	'
Valuation and qualifying accounts table	'
	Column A		Column B		Column C					Column D			Column E
	Description		Balance at Beginning of Period		Additions - Charged to Costs and Expenses			Additions - Charged to Other Accounts - Describe		Deductions - Describe			Balance at End of Period
	(amounts in thousands)
	Sales and returns allowances
	For the year ended December 31, 2013		$	7,326	$	(826	)	$	—	$	—		$	6,500
	For the year ended December 31, 2012		6,406		920			—		—			7,326
	For the year ended December 31, 2011		5,634		772			—		—			6,406
	Allowance for doubtful accounts
	For the year ended December 31, 2013		$	6,447	$	8,499		$	—	$	8,285	(1)	$	6,661
	For the year ended December 31, 2012		6,403		8,043			—		7,999		(1)	6,447
	For the year ended December 31, 2011		8,349		7,695			—		9,641		(1)	6,403
	(1)	Uncollectable accounts written off.

Summary_of_Significant_Account3

Summary of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	stores
	states
Number of stores	4,166	'	'
Number of states in which entity operates	42	'	'
Accounts receivable due from employees to the Company	$1,000,000	$2,100,000	'
Allowance for doubtful vendor receivables	0	0	'
Replacement cost of inventory	2,380,000,000	2,310,000,000	'
LIFO inventory value in excess of replacement cost of inventory	21,600,000	'	'
Notes receivable from vendors and other third parties	17,200,000	9,500,000	'
Reserve for uncollectable notes receivables	0	0	'
Goodwill impairment	0	0	'
Impairment of long-lived assets	0	0	'
Self-insurance reserves, current	57,700,000	54,190,000	'
Instruments qualifying as cash flow or fair value hedges	0	0	'
Advertising expense, net	78,300,000	74,800,000	73,800,000
Total interest costs capitalized	10,600,000	6,100,000	4,700,000
Deferred debt issuance costs, net of amortization	11,500,000	10,100,000	'
Deferred debt issuance costs, net of amortization, included in "Other current assets"	1,600,000	1,500,000	'
Valuation allowance for deferred tax assets	$0	$0	'
Minimum [Member]	'	'	'
Note receivable interest rate	0.00%	'	'
Maximum [Member]	'	'	'
Note receivable interest rate	10.00%	'	'

Summary_of_Significant_Account4

Summary of Significant Accounting Policies (Components of Self-Insurance Reserves) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Policy Text Block [Abstract]	'	'
Self-insurance reserves (undiscounted)	$126,715	$122,866
Self-insurance reserves (discounted)	$116,062	$111,840

Fair_Value_Measurements_Narrat

Fair Value Measurements (Narrative) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]	'	'
Non-financial assets and liabilities measured at fair value on a nonrecurring basis	$0	$0

Fair_Value_Measurements_Fair_V

Fair Value Measurements (Fair Value of Senior Notes) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Senior Notes due 2021 at 4.875% [Member]	'	'
Estimated fair value of senior notes	$524,434	$559,870
Senior Notes due 2021 at 4.625% [Member]	'	'
Estimated fair value of senior notes	310,141	331,224
Senior Notes due 2022 at 3.800% [Member]	'	'
Estimated fair value of senior notes	290,453	313,890
Senior Notes due 2023 at 3.850% [Member]	'	'
Estimated fair value of senior notes	289,362	0
Senior Notes due 2021 at 4.875% [Member]	'	'
Carrying amount of senior notes	497,525	497,173
Senior Notes due 2021 at 4.625% [Member]	'	'
Carrying amount of senior notes	299,598	299,545
Senior Notes due 2022 at 3.800% [Member]	'	'
Carrying amount of senior notes	299,011	298,916
Senior Notes due 2023 at 3.850% [Member]	'	'
Carrying amount of senior notes	$299,976	$0

Property_and_Equipment_Narrati

Property and Equipment (Narrative) (Details) (Vehicles [Member], USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Vehicles [Member]	'	'
Property and Equipment	'	'
Gross value of capital lease assets	$7	$8.40
Accumulated amortization on capital lease assets	$7	$8.40

Property_and_Equipment_Propert

Property and Equipment (Property and Equipment, Including Original Useful Lives) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013
In Thousands, unless otherwise specified			Building and building improvements [Member]	Building and building improvements [Member]	Leasehold improvements [Member]	Leasehold improvements [Member]	Furniture, fixtures and equipment [Member]	Furniture, fixtures and equipment [Member]	Vehicles [Member]	Vehicles [Member]
			Minimum [Member]	Maximum [Member]	Minimum [Member]	Maximum [Member]	Minimum [Member]	Maximum [Member]	Minimum [Member]	Maximum [Member]
Property and Equipment	'	'	'	'	'	'	'	'	'	'
Land	$457,858	$420,292	'	'	'	'	'	'	'	'
Building and building improvements	1,197,369	1,078,265	'	'	'	'	'	'	'	'
Leasehold improvements	483,578	447,046	'	'	'	'	'	'	'	'
Furniture, fixtures and equipment	960,928	932,406	'	'	'	'	'	'	'	'
Vehicles	251,505	231,615	'	'	'	'	'	'	'	'
Construction in progress	255,599	159,946	'	'	'	'	'	'	'	'
Total property and equipment	3,606,837	3,269,570	'	'	'	'	'	'	'	'
Less: accumulated depreciation and amortization	1,181,734	1,057,980	'	'	'	'	'	'	'	'
Net property and equipment	$2,425,103	$2,211,590	'	'	'	'	'	'	'	'
Property, plant and equipment, useful lives, in years	'	'	'15 years	'39 years	'3 years	'25 years	'3 years	'20 years	'5 years	'10 years

Goodwill_and_Other_Intangibles2

Goodwill and Other Intangibles (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
(Decrease) increase in goodwill	($2,185,000)	$14,503,000	'
Goodwill impairment	0	0	'
Indefinite-lived intangible assets, other than goodwill	0	0	'
Amortization expense of amortizable intangible assets	4,000,000	4,700,000	6,100,000
Favorable leases [Member]	'	'	'
Weighted-average remaining useful life of favorable leases, in years	'9 years 11 months 27 days	'	'
Unfavorable leases [Member]	'	'	'
Weighted-average remaining useful life of unfavorable leases, in years	'4 years 11 months 2 days	'	'
Amortization benefit of unfavorable operating leases	$4,500,000	$5,700,000	$6,700,000

Goodwill_and_Other_Intangibles3

Goodwill and Other Intangibles (Changes in Net Goodwill) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]	'	'
Beginning balance	$758,410	$743,907
Activity	-2,185	14,503
Ending balance	$756,225	$758,410

Goodwill_and_Other_Intangibles4

Goodwill and Other Intangibles (Amortizable Intangibles) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Amortizable intangible assets, cost	$51,557	$51,627
Amortizable intangible assets, accumulated amortization expense	-32,891	-29,013
Net amortizable intangible assets	18,666	22,614
Favorable leases [Member]	'	'
Amortizable intangible assets, cost	50,910	50,910
Amortizable intangible assets, accumulated amortization expense	-32,463	-28,566
Net amortizable intangible assets	18,447	22,344
Noncompete Agreements [Member]	'	'
Amortizable intangible assets, cost	647	717
Amortizable intangible assets, accumulated amortization expense	-428	-447
Net amortizable intangible assets	219	270
Unfavorable leases [Member]	'	'
Amortizable intangibles, cost	49,380	49,380
Amortizable intangibles, accumulated amortization benefit	36,758	32,210
Net amortizable intangibles	$12,622	$17,170

Goodwill_and_Other_Intangibles5

Goodwill and Other Intangibles (Estimated Amortization of Intangibles) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
2014 amortization expense	($3,109)
2015 amortization expense	-2,679
2016 amortization expense	-2,323
2017 amortization expense	-1,907
2018 amortization expense	-1,444
Total amortization expense	-11,462
2014 amortization benefit	3,642
2015 amortization benefit	2,794
2016 amortization benefit	2,076
2017 amortization benefit	1,493
2018 amortization benefit	923
Total amortization benefit	10,928
2014 amortization, net	533
2015 amortization, net	115
2016 amortization, net	-247
2017 amortization, net	-414
2018 amortization, net	-521
Total amortization, net	($534)

Financing_Unsecured_Revolving_

Financing (Unsecured Revolving Credit Facility) (Details) (USD $)

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

Dec. 31, 2013

Jan. 14, 2011

Dec. 31, 2013

Dec. 31, 2012

Sep. 09, 2011

Jul. 02, 2013

Jul. 02, 2013

Jul. 02, 2013

Dec. 31, 2013

Dec. 31, 2013

Jul. 02, 2013

Jul. 02, 2013

Unsecured debt [Member]

Unsecured debt [Member]

Unsecured debt [Member]

Unsecured debt [Member]

Unsecured debt [Member]

Unsecured debt [Member]

Unsecured debt [Member]

Unsecured debt [Member]

Unsecured debt [Member]

Unsecured debt [Member]

Unsecured debt [Member]

Line of credit facility [Member]

Line of credit facility [Member]

Line of credit facility [Member]

Line of credit facility [Member]

Line of credit facility [Member]

Line of credit facility [Member]

Line of credit facility [Member]

Line of credit facility [Member]

Line of credit facility [Member]

Line of credit facility [Member]

Line of credit facility [Member]

Rate

Amendment one [Member]

Amendment two [Member]

Letter of credit [Member]

Swing line revolver [Member]

Euro Dollar rate [Member]

Base rate [Member]

Through December 2014 [Member]

Through maturity [Member]

Rate

Rate

Rate

Rate

Credit agreement inception date

'

14-Jan-11

'

'

'

'

'

'

'

'

'

'

Number of years in credit facility term

'

'5 years

'

'

'5 years

'5 years

'

'

'

'

'

'

Current maximum borrowing capacity under credit facility

'

$750,000,000

'

'

$660,000,000

$600,000,000

'

'

'

'

'

'

Credit agreement amendment date

'

'

'

'

9-Sep-11

2-Jul-13

'

'

'

'

'

'

Line of credit facility expiration date

'

14-Jan-16

'

'

9-Sep-16

2-Jul-18

'

'

'

'

'

'

One-time charge related to the modification of the credit agreement

'

'

'

'

300,000

'

'

'

'

'

'

'

Maximum aggregate increase to credit facility

'

200,000,000

'

'

200,000,000

200,000,000

'

'

'

'

'

'

Letters of credit

'

'

51,700,000

57,300,000

'

'

'

'

'

'

'

'

Outstanding borrowings under credit facility

'

'

0

0

'

'

'

'

'

'

'

'

Line of credit facility fee percentage

'

'

0.15%

'

'

'

'

'

'

'

'

'

Covenant description for debt instrument

'Each of the senior notes is subject to certain customary covenants, with which the Company complied as of December 31, 2013.

'

'

'

'

'The Credit Agreement contains certain covenants, including limitations on indebtedness, a minimum consolidated fixed charge coverage ratio of 2.25 times through December 31, 2014, and 2.50 times thereafter 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 adjusted earnings before interest, taxes, depreciation, amortization, rent and stock-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 credit extensions, 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 covenant compliance

'

'

'As of December 31, 2013, the Company remained in compliance with all covenants under the Credit Agreement.

'

'

'

'

'

'

'

'

'

Line of credit facility sublimit

'

'

'

'

'

'

$200,000,000

$75,000,000

'

'

'

'

Line of credit current interest rate

'

'

'

'

'

'

'

'

0.98%

0.00%

'

'

Minimum debt instrument consolidated fixed charge coverage ratio covenant

'

'

'

'

'

'

'

'

'

'

2.25%

2.50%

Maximum debt instrument consolidated leverage ratio covenant

'

'

'

'

'

'

'

'

'

'

'

3.00%

Financing_Senior_Notes_Details

Financing (Senior Notes) (Details) (USD $)	12 Months Ended	0 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Jan. 14, 2011	Sep. 19, 2011	Aug. 21, 2012	Jun. 20, 2013
		Senior Notes due 2021 at 4.875% [Member]	Senior Notes due 2021 at 4.625% [Member]	Senior Notes due 2022 at 3.800% [Member]	Senior Notes due 2023 at 3.850% [Member]
		D	D	D	D
		Rate	Rate	Rate	Rate
Debt instrument offering date	'	14-Jan-11	19-Sep-11	21-Aug-12	20-Jun-13
Face amount of senior notes	'	$500	$300	$300	$300
Interest rate of notes	'	4.88%	4.63%	3.80%	3.85%
Percentage of face value of debt instrument pricing	'	99.30%	99.83%	99.63%	99.99%
Number of days in annual interest calculation period	'	360	360	360	360
Debt instrument covenant description	'Each of the senior notes is subject to certain customary covenants, with which the Company complied as of December 31, 2013.	'	'	'	'

Financing_Outstanding_Financin

Financing (Outstanding Financing Facilities) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Revolving Credit Facility	$0	$0
Senior Notes due 2021 at 4.875% [Member]	'	'
Senior notes	497,525	497,173
Senior notes, unamortized discount	2,500	2,800
Effective interest rate	4.97%	'
Senior Notes due 2021 at 4.625% [Member]	'	'
Senior notes	299,598	299,545
Senior notes, unamortized discount	400	500
Effective interest rate	4.65%	'
Senior Notes due 2022 at 3.800% [Member]	'	'
Senior notes	299,011	298,916
Senior notes, unamortized discount	1,000	1,100
Effective interest rate	3.85%	'
Senior Notes due 2023 at 3.850% [Member]	'	'
Senior notes	299,976	0
Senior notes, unamortized discount	$23	'
Effective interest rate	3.85%	'

Financing_Principal_Maturities

Financing (Principal Maturities of Financing Facilities) (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Maturities of Long-term Debt [Abstract]	'
2014	$0
2015	0
2016	0
2017	0
2018	0
Thereafter	1,400,000
Total financing facility obligations	$1,400,000

Leasing_Narrative_Details

Leasing (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Operating lease [Member]	'	'
Description of lessee leasing arrangements	'The Company leases certain office space, retail stores, property and equipment under long-term, non-cancelable operating leases. Most of these leases include renewal options and some include options to purchase, provisions for percentage rent based on sales and/or incremental step increase provisions.	'
Future minimum sublease income under non-cancelable subleases	$15.80	'
Capital lease [Member] | Building [Member]	'	'
Description of lessee leasing arrangements	'The Company assumed certain building capital leases in the acquisition of CSK. The remaining building capital lease agreement will expire on AprilB 30, 2015.	'
Present value of future minimum capital lease payments, classified as long-term debt	0.1	0.2
Additional acquired capital leases	0	0
Capital lease [Member] | Vehicles [Member]	'	'
Description of lessee leasing arrangements	'The Company assumed certain vehicle capital leases in the acquisition of CSK. The remaining vehicle capital lease agreements expired on OctoberB 15, 2013.	'
Present value of future minimum capital lease payments, classified as long-term debt	'	0.2
Additional acquired capital leases	$0	$0

Leasing_Future_Minimum_Lease_P

Leasing (Future Minimum Lease Payments for Operating and Capital Leases) (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Related parties [Member] | Operating lease expense [Member]	'
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]	'
2014	$4,555
2015	4,621
2016	4,633
2017	4,405
2018	4,196
Thereafter	11,331
Total	33,741
Non-related parties [Member] | Capital lease expense [Member]	'
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]	'
2014	77
2015	26
2016	0
2017	0
2018	0
Thereafter	0
Total	103
Non-related parties [Member] | Operating lease expense [Member]	'
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]	'
2014	242,571
2015	228,364
2016	208,269
2017	186,686
2018	160,049
Thereafter	881,810
Total	1,907,749
Lease Agreements [Member]	'
2014	247,203
2015	233,011
2016	212,902
2017	191,091
2018	164,245
Thereafter	893,141
Total	$1,941,593

Leasing_Net_Rent_Expense_Detai

Leasing (Net Rent Expense) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Leases, Rent Expense, Net [Abstract]	'	'	'
Minimum operating lease expense	$247,039	$234,113	$226,158
Contingent rents	701	744	534
Other lease related occupancy costs	11,257	10,043	8,821
Total rent expense	258,997	244,900	235,513
Less: sublease income	4,105	4,031	4,616
Net rent expense	$254,892	$240,869	$230,897

Exit_Activities_Narrative_Deta

Exit Activities (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Store closure liabilities [Member]	'
Restructuring and related activities, completion date	30-Apr-23
Cumulative amount incurred for exit activities	$24.40
Administrative office and distribution facilities closure liabilities [Member]	'
Cumulative amount incurred for exit activities	$10.10

Exit_Activities_Summary_of_Clo

Exit Activities (Summary of Closure Reserves for Stores, Administrative Office and Distribution Facilities and Reserves for Employee Separation Costs) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Store closure liabilities [Member]	'	'
Beginning balance	$8,337	$11,312
Additions and accretion	459	584
Payments	-2,458	-2,998
Revisions to estimates	-499	-561
Ending balance	5,839	8,337
Administrative office and distribution facilities closure liabilities [Member]	'	'
Beginning balance	1,676	3,544
Additions and accretion	105	170
Payments	-422	-2,038
Revisions to estimates	0	0
Ending balance	$1,359	$1,676

Derivative_Instruments_and_Hed2

Derivative Instruments and Hedging Activities (Narrative) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Cash flow hedge loss reclassified to Other income (expense)	$0	$0	($4,237)
Cash flow hedging [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Instruments held qualifying as cash flow hedge derivatives	$0	$0	'

Derivative_Instruments_and_Hed3

Derivative Instruments and Hedging Activities (Location and Amount of Loss Recognized in Income on Derivatives) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'	'	'
Cash flow hedge loss reclassified to Other income (expense)	$0	$0	($4,237)

Warranties_Product_Warranty_Li

Warranties (Product Warranty Liabilities) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Product Warranties Disclosures [Abstract]	'	'
Beginning balance	$28,001	$21,642
Warranty claims	-50,859	-50,009
Warranty accruals	56,244	56,368
Ending balance	$33,386	$28,001

Share_Repurchase_Program_Narra

Share Repurchase Program (Narrative) (Details) (USD $)	0 Months Ended	12 Months Ended		38 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Feb. 05, 2014	Dec. 31, 2013	Dec. 31, 2012	Feb. 28, 2014
Proceeds from (Repurchase of) Equity [Abstract]	'	'	'	'
Increase in authorized amount	$500,000,000	$500,000,000	'	'
Cumulative authorized amount	4,000,000,000	3,500,000,000	'	'
Authorization effective period	'3 years	'3 years	'	'
Common stock repurchased, shares	'	8,529	16,201	40,600
Common stock repurchased, average price per share	'	$109.38	$89.20	$82.61
Common stock repurchased, value	'	932,900,000	1,445,044,000	3,400,000,000
Remaining balance under share repurchase program	'	$145,700,000	'	$645,100,000

Share_Repurchase_Program_Sched

Share Repurchase Program (Schedule Of Shares Repurchased) (Details) (USD $)	12 Months Ended		38 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Feb. 28, 2014
Proceeds from (Repurchase of) Equity [Abstract]	'	'	'
Shares repurchased	8,529	16,201	40,600
Average price per share	$109.38	$89.20	$82.61
Total investment	$932,900	$1,445,044	$3,400,000

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Loss (Narrative) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]	'	'
Adjustments to accumulated other comprehensive loss	$0	$0

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Loss (Schedule of Amounts Reclassified from Accumulated Other Comprehensive Loss) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2011
Equity [Abstract]	'
Unrealized loss on cash flow hedges, before tax	$4,237
Unrealized loss on cash flow hedges, tax expense	-1,267
Unrealized loss on cash flow hedges, net of tax	$2,970

ShareBased_Compensation_and_Be2

Share-Based Compensation and Benefit Plans (Stock Option Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
	Rate
Employee Stock Option [Member]	'
Vesting of options, description	'The Companybs employee incentive plans provide for the granting of stock options for the purchase of common stock of the Company to certain key employees of the Company. Employee stock options are granted at an exercise price that is equal to the closing market price of the Companybs common stock on the date of the grant.
Options expiration date, years	'10 years
Options vesting period	'4 years
Option vesting rate per year	25.00%
Stock Option [Member]	'
Remaining unrecognized compensation expense	36.6
Weighted-average period for cost recognition, years	'2 years 5 months 14 days
Stock Option [Member] | Director [Member]	'
Vesting of options, description	'The Companybs director stock plan provides for the granting of stock options for the purchase of common stock of the Company to directors of the Company. Director stock options are granted at an exercise price that is equal to the closing market price of the Companybs common stock on the date of the grant.
Options expiration date, years	'7 years
Options vesting period	'6 months

ShareBased_Compensation_and_Be3

Share-Based Compensation and Benefit Plans (Restricted Stock) (Narrative) (Details) (USD $)	12 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Dec. 31, 2013
Director [Member]	'
Restricted stock awards plan description	'The Companybs director stock plan provides for the award of shares of restricted stock that vest evenly over a three-year period and are held in escrow until such vesting has occurred. Generally, unvested shares are forfeited when a director ceases their service on the Companybs Board of Directors. The fair value of shares awarded under this plan is based on the closing market price of the Companybs common stock on the date of award and compensation expense is recorded evenly over the vesting period.
Employee Stock [Member]	'
Restricted stock awards plan description	'The Companybs performance incentive plan 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. Generally, unvested shares are forfeited when an employee ceases employment. The fair value of shares awarded under this plan is based on the closing market price of the Companybs common stock on the date of award and compensation expense is recorded evenly over the vesting period.
Restricted Stock [Member]	'
Remaining unrecognized compensation expense	2.9
Weighted-average period for cost recognition, years	'2 years 0 months 19 days
Shares withheld to cover employees' taxes upon vesting	9

ShareBased_Compensation_and_Be4

Share-Based Compensation and Benefit Plans (Employee Stock Purchase Plan) (Narrative) (Details) (Employee Stock Purchase Plan [Member])	12 Months Ended
	Dec. 31, 2013
	Rate
Employee Stock Purchase Plan [Member]	'
Employee stock purchase plan stock purchase percentage	85.00%
Other employee benefit plan descriptions	'The Companybs employee stock purchase plan (the bESPPb) permits eligible employees to purchase shares of the Companybs common stock at 85% of the fair market value. Employees may authorize the Company to withhold up to 5% of their annual salary to participate in the plan.

ShareBased_Compensation_and_Be5

Share-Based Compensation and Benefit Plans (Profit Sharing and Savings Plan) (Narrative) (Detail) (Profit Sharing and Savings Plan Member, USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Profit Sharing and Savings Plan Member	'	'	'
Other employee benefit plan descriptions	'The Company sponsors a contributory profit sharing and savings 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 employeebs wages that are contributed and 25% of the next 4% of each employeebs wages that are contributed.	'	'
Issuance of common stock under employee benefit plans, net of forfeitures and shares withheld to cover taxes, shares	0	0	0
Profit sharing and savings plan cost recognized	$16.50	$15.60	$11.80

ShareBased_Compensation_and_Be6

Share-Based Compensation and Benefit Plans (Summary of Shares Authorized and Available for Future Issuance Under Benefit and Compensation Plans) (Details)	Dec. 31, 2013
In Thousands, unless otherwise specified
Profit Sharing and Savings Plan Member	'
Shares authorized for issuance under compensation and benefit plans	4,200
Shares available for future issuance under compensation and benefit plans	349
Director [Member]	'
Shares authorized for issuance under compensation and benefit plans	1,000
Shares available for future issuance under compensation and benefit plans	267
Restricted Stock [Member]	'
Shares authorized for issuance under compensation and benefit plans	650
Shares available for future issuance under compensation and benefit plans	378
Employee Stock Option [Member]	'
Shares authorized for issuance under compensation and benefit plans	34,000
Shares available for future issuance under compensation and benefit plans	6,711
Employee Stock Purchase Plan [Member]	'
Shares authorized for issuance under compensation and benefit plans	4,250
Shares available for future issuance under compensation and benefit plans	901

ShareBased_Compensation_and_Be7

Share-Based Compensation and Benefit Plans (Summary Of Stock Options) (Details) (USD $)	12 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Stock Option [Member]	'	'	'
Outstanding at December 31, 2012 shares	6,721	'	'
Outstanding at December 31, 2012 weighted-average exercise price	51.03	'	'
Granted, shares	363	'	'
Granted, weighted-average exercise price	105.11	'	'
Exercised, shares	-1,375	'	'
Exercised, weighted-average exercise price	43.09	'	'
Forfeited, shares	-532	'	'
Forfeited, weighted-average exercise price	76.77	'	'
Outstanding at December 31, 2013 shares	5,177	'	'
Outstanding at December 31, 2013 weighted-average exercise price	54.28	'	'
Outstanding at December 31, 2013, average remaining contractual term	'6 years 1 month 13 days	'	'
Outstanding at December 31, 2013, aggregate intrinsic value	385,330	'	'
Vested or expected to vest at December 31, 2013, shares	4,909	'	'
Vested or expected to vest at December 31, 2013, weighted-average exercise price	52.87	'	'
Vested or expected to vest at December 31, 2013, average remaining contractual term	'6 years 0 months 12 days	'	'
Vested or expected to vest at December 31, 2013, aggregate intrinsic value	372,291	'	'
Exercisable at December 31, 2013, shares	3,169	'	'
Exercisable at December 31, 2013, weighted-average exercise price	36.92	'	'
Exercisable at December 31, 2013, average remaining contractual term	'4 years 9 months 26 days	'	'
Exercisable at December 31, 2013, aggregate intrinsic value	290,911	'	'
Stock Option [Member]	'	'	'
Exercisable at December 31, 2013, average remaining contractual term	'4 years 9 months 9 days	'5 years 1 month 16 days	'5 years 1 month 13 days
Director [Member]	'	'	'
Outstanding at December 31, 2012 shares	68	'	'
Outstanding at December 31, 2012 weighted-average exercise price	35.03	'	'
Granted, shares	0	'	'
Granted, weighted-average exercise price	0	'	'
Exercised, shares	-18	'	'
Exercised, weighted-average exercise price	28.54	'	'
Forfeited, shares	0	'	'
Forfeited, weighted-average exercise price	0	'	'
Outstanding at December 31, 2013 shares	50	'	'
Outstanding at December 31, 2013 weighted-average exercise price	37.37	'	'
Outstanding at December 31, 2013, average remaining contractual term	'2 years 6 months 0 days	'	'
Outstanding at December 31, 2013, aggregate intrinsic value	4,567,000	'	'
Vested or expected to vest at December 31, 2013, shares	50	'	'
Vested or expected to vest at December 31, 2013, weighted-average exercise price	37.37	'	'
Vested or expected to vest at December 31, 2013, average remaining contractual term	'2 years 6 months 0 days	'	'
Vested or expected to vest at December 31, 2013, aggregate intrinsic value	4,567,000	'	'
Exercisable at December 31, 2013, shares	50	'	'
Exercisable at December 31, 2013, weighted-average exercise price	37.37	'	'
Exercisable at December 31, 2013, average remaining contractual term	'2 years 6 months 0 days	'	'
Exercisable at December 31, 2013, aggregate intrinsic value	4,567,000	'	'

ShareBased_Compensation_and_Be8

Share-Based Compensation and Benefit Plans (Black-Scholes Option Pricing Model) (Details) (Stock Option [Member])	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	Rate	Rate	Rate
Stock Option [Member]	'	'	'
Risk-free interest rate	0.96%	0.59%	1.16%
Expected life	'5 years 0 months 0 days	'3 years 10 months 24 days	'3 years 8 months 12 days
Expected volatility	31.00%	33.50%	33.30%
Expected dividend yield	0.00%	0.00%	0.00%

ShareBased_Compensation_and_Be9

Share-Based Compensation and Benefit Plans (Stock Option Activity) (Details) (Stock Option [Member], USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock Option [Member]	'	'	'
Compensation expense for benefit plans	$17.80	$18.50	$17.60
Income tax benefit from compensation expense for benefit plans	6.8	7.1	6.8
Total intrinsic value of options exercised	95.8	113.6	71.5
Cash received from the exercise of stock options	$59.70	$54.90	$50.30
Weighted-average grant date fair value of options awarded	$29.98	$23.57	$16.93
Weighted-average remaining contractual life of options currently exercisable, years	'4 years 9 months 9 days	'5 years 1 month 16 days	'5 years 1 month 13 days

Recovered_Sheet1

Share-Based Compensation and Benefit Plans (Summary of Restricted Stock) (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Employee Stock [Member]	'		'	'
Non-vested restricted stock at December 31, 2012 shares	27		'	'
Non-vested restricted stock at December 31, 2012 weighted-average grant date fair value	$70.64		'	'
Restricted stock granted during the period, shares	16		'	'
Restricted stock granted during period, weighted-average grant date fair value	$100.82		'	'
Restricted stock vested during the period, shares	-22	[1]	'	'
Restricted stock vested during the period, weighted-average grant date fair value	$73.67	[1]	'	'
Restricted stock forfeited during the period, shares	-1		'	'
Restricted stock forfeited during the period, weighted-average grant date fair value	$83.06		'	'
Non-vested restricted stock at December 31, 2013 shares	20		'	'
Non-vested restricted stock at December 31, 2013 weighted-average grant date fair value	$92.02		'	'
Restricted Stock [Member]	'		'	'
Restricted stock granted during period, weighted-average grant date fair value	$102.63		$90.10	$56.18
Director [Member] | Restricted Stock [Member]	'		'	'
Non-vested restricted stock at December 31, 2012 shares	10		'	'
Non-vested restricted stock at December 31, 2012 weighted-average grant date fair value	$79.58		'	'
Restricted stock granted during the period, shares	5		'	'
Restricted stock granted during period, weighted-average grant date fair value	$109.45		'	'
Restricted stock vested during the period, shares	-4		'	'
Restricted stock vested during the period, weighted-average grant date fair value	$75.39		'	'
Restricted stock forfeited during the period, shares	0		'	'
Restricted stock forfeited during the period, weighted-average grant date fair value	$0		'	'
Non-vested restricted stock at December 31, 2013 shares	11		'	'
Non-vested restricted stock at December 31, 2013 weighted-average grant date fair value	$94.18		'	'
[1]	Includes 9 thousand shares withheld to cover employees' taxes upon vesting.

Recovered_Sheet2

Share-Based Compensation and Benefit Plans (Restricted Stock Activity) (Details) (Restricted Stock [Member], USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restricted Stock [Member]	'	'	'
Compensation expense for benefit plans	$2.20	$2	$1.70
Income tax benefit from compensation expense for benefit plans	0.8	0.8	0.6
Total fair value of shares vested (at vest date)	$3.30	$2.70	$2.60
Issuance of common stock under employee benefit plans, net of forfeitures and shares withheld to cover taxes, shares	21,200	23,700	49,900
Average grant-date fair value of shares issued during the period in compensation and benefit plans other than stock options	$102.63	$90.10	$56.18

Recovered_Sheet3

Share-Based Compensation and Benefit Plans (Employee Stock Purchase Plan Activity) (Details) (Employee Stock Purchase Plan [Member], USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Stock Purchase Plan [Member]	'	'	'
Compensation expense for benefit plans	$1.70	$1.50	$1.30
Income tax benefit from compensation expense for benefit plans	$0.60	$0.60	$0.50
Issuance of common stock under employee benefit plans, net of forfeitures and shares withheld to cover taxes, shares	100,600	114,600	134,500
Average grant-date fair value of shares issued during the period in compensation and benefit plans other than stock options	$95.51	$75.42	$53.93

Commitments_Commitments_Narrat

Commitments (Commitments) (Narrative) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Other Commitments [Line Items]	'	'
Debt instrument minimum number of days callable	30	'
Debt instrument maximum number of days callable	60	'
Percentage principal amount of debt that can be redeemed by the Company	100.00%	'
Percentage principal amount of debt redeemable upon change in control	101.00%	'
Construction [Member]	'	'
Other Commitments [Line Items]	'	'
Construction commitments	$80.80	'
Unsecured debt [Member] | Line of credit facility [Member]	'	'
Other Commitments [Line Items]	'	'
Letters of credit	$51.70	$57.30

Legal_Matters_Details

Legal Matters (Details) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Loss Contingency [Abstract]	'
Legacy CSK DOJ indemnity litigation reserve	$13.40

Related_Parties_Narrative_Deta

Related Parties (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	bulk_facilities
	stores
Related Party Transaction [Line Items]	'	'	'
Number of stores	4,166	'	'
Related parties [Member]	'	'	'
Related Party Transaction [Line Items]	'	'	'
Number of stores	77	'	'
Number of bulk facilities	1	'	'
Lease payments under related party operating leases	$4.40	$4.40	$4.20

Income_Taxes_Provision_for_Inc

Income Taxes (Provision for Income Taxes) (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
State and local jurisdiction [Member]	'
Tax credit carryforwards available for state tax purposes, net of federal impact	7
Net operating loss carryforwards available for state purposes	23.2
Minimum [Member]	'
State operating loss carryforwards, expiration year	31-Dec-21
Maximum [Member]	'
State operating loss carryforwards, expiration year	31-Dec-27

Income_Taxes_Unrecognized_Tax_

Income Taxes (Unrecognized Tax Benefits) (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued [Abstract]	'	'	'	'
Reserve for unrecognized tax benefits (including interest and penalties)	'	$58,600,000	$59,300,000	$53,000,000
Amounts that would affect the effective tax rate if recognized	'	58,600,000	59,300,000	53,000,000
Federal tax effect for unrecognized tax benefits	'	16,600,000	'	'
Accrual of interest and penalties related to uncertain tax positions	'	8,100,000	8,300,000	7,200,000
Tax expense related to an increase in liabilities for interest and penalties	'	2,100,000	2,600,000	3,900,000
Reduction due to lapse of statute of limitations (with 2014 estimate)	($4,300,000)	($6,535,000)	($3,746,000)	($2,278,000)

Income_Taxes_Schedule_of_Compo

Income Taxes (Schedule of Components of Deferred Tax Assets and Liabilities) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current deferred tax assets:	'	'
Allowance for doubtful accounts	$1,997	$1,937
Tax credits	1,636	1,583
Other accruals	61,100	55,683
Total current deferred tax assets	64,733	59,203
Noncurrent deferred tax assets:	'	'
Tax credits	5,333	5,333
Net operating losses	1,180	2,077
Other accruals	59,176	58,605
Total noncurrent deferred tax assets	65,689	66,015
Total deferred tax assets	130,422	125,218
Current deferred tax liabilities:	'	'
Inventories	84,955	78,675
Total current deferred tax liabilities	84,955	78,675
Noncurrent deferred tax liabilities:	'	'
Property and equipment	131,851	132,547
Other	14,551	13,012
Total noncurrent deferred tax liabilities	146,402	145,559
Total deferred tax liabilities	231,357	224,234
Net deferred tax liabilities	($100,935)	($99,016)

Income_Taxes_Reconciliation_of

Income Taxes (Reconciliation of Net Deferred Tax Assets and Liabilities) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Deferred Income Taxes and Tax Credits [Abstract]	'	'
Deferred tax assets - current	$64,733	$59,203
Deferred tax liabilities - current	-84,955	-78,675
Deferred tax liabilities - current	-20,222	-19,472
Deferred tax assets - noncurrent	65,689	66,015
Deferred tax liabilities - noncurrent	-146,402	-145,559
Deferred tax liabilities - noncurrent	-80,713	-79,544
Net deferred tax liabilities	($100,935)	($99,016)

Income_Taxes_Reconciliation_of1

Income Taxes (Reconciliation of the Provision for Income Taxes to the Amounts Computed at the Federal Statutory Rate) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deferred Income Taxes and Tax Credits [Abstract]	'	'	'
Federal, current	$348,303	$311,631	$228,443
Federal, deferred	847	10,030	55,175
Federal, total	349,150	321,661	283,618
State, current	38,428	35,982	25,537
State, deferred	1,072	-1,868	-1,055
State, total	39,500	34,114	24,482
Current income tax expense (benefit)	386,731	347,613	253,980
Deferred income tax expense (benefit)	1,919	8,162	54,120
Provision for income taxes	$388,650	$355,775	$308,100

Income_Taxes_Schedule_of_Compo1

Income Taxes (Schedule of Components of the Provision for Income Taxes) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Federal income taxes at statutory rate	$370,632	$329,532	$285,524
State income taxes, net of federal tax benefit	26,802	22,426	16,132
Other items, net	-8,784	3,817	6,444
Provision for income taxes	$388,650	$355,775	$308,100

Income_Taxes_Summary_of_Change

Income Taxes (Summary of Changes in Gross Amount of Unrecognized Tax Benefits) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued [Abstract]	'	'	'	'
Balance as of January 1,	$50,459	$51,004	$45,800	$36,710
Additions based on tax positions related to the current year	'	7,046	8,100	7,308
Additions based on tax positions related to prior years	'	'	1,301	4,060
Payments related to settled items	'	-1,056	-451	'
Reduction due to lapse of statute of limitations (with 2014 estimate)	-4,300	-6,535	-3,746	-2,278
Balance as of December 31,	'	$50,459	$51,004	$45,800

Earnings_Per_Share_Narrative_D

Earnings Per Share (Narrative) (Details) (USD $)	12 Months Ended		38 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Feb. 28, 2014
Earnings Per Share [Abstract]	'	'	'
Common stock repurchased, shares	8,529	16,201	40,600
Common stock repurchased, average price per share	$109.38	$89.20	$82.61
Common stock repurchased, value	$932,900	$1,445,044	$3,400,000

Earnings_Per_Share_Computation

Earnings Per Share (Computation of Basic and Diluted Earnings Per Share) (Details) (USD $)

3 Months Ended

12 Months Ended

In Thousands, except Per Share data, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Numerator (basic and diluted):

'

'

'

'

'

'

'

'

'

'

'

Net income

$152,347

$186,489

$177,127

$154,329

$132,802

$159,332

$146,120

$147,492

$670,292

$585,746

$507,673

Denominator:

'

'

'

'

'

'

'

'

'

'

'

Denominator for basic earnings per share - weighted-average shares

'

'

'

'

'

'

'

'

109,244

121,182

134,667

Effect of stock options

'

'

'

'

'

'

'

'

1,857

[1]

2,132

[1]

2,316

[1]

Denominator for diluted earnings per share - weighted-average shares and assumed conversion

'

'

'

'

'

'

'

'

111,101

123,314

136,983

Earnings per share - basic

$1.43

[2]

$1.72

[2]

$1.61

[2]

$1.38

[2]

$1.16

[2]

$1.34

[2]

$1.17

[2]

$1.16

[2]

$6.14

$4.83

$3.77

Earnings per share - assuming dilution

$1.40

[2]

$1.69

[2]

$1.58

[2]

$1.36

[2]

$1.14

[2]

$1.32

[2]

$1.15

[2]

$1.14

[2]

$6.03

$4.75

$3.71

Antidilutive stock options

'

'

'

'

'

'

'

'

498

[1]

1,816

[1]

1,756

[1]

Weighted-average exercise price

'

'

'

'

'

'

'

'

$103.80

[1]

$87.88

[1]

$62.79

[1]

[1]

See Note 12 for further discussion on the terms of the Company's share-based compensation plans.

[2]

Earnings per share amounts are computed independently for each quarter and annual period. The quarterly earnings per share amounts may not sum to equal the full-year earnings per share.

Quarterly_Results_unaudited_Un

Quarterly Results (unaudited) (Unaudited Operating Data) (Details) (USD $)	3 Months Ended																12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Financial Data [Abstract]	'		'		'		'		'		'		'		'		'	'	'
Sales	$1,621,234		$1,728,025		$1,714,969		$1,585,009		$1,488,385		$1,601,558		$1,562,849		$1,529,392		$6,649,237	$6,182,184	$5,788,816
Gross profit	819,300		879,163		871,875		798,663		750,384		805,493		779,861		761,680		3,369,001	3,097,418	2,837,349
Operating income	255,760		300,380		296,261		251,084		222,971		263,318		243,603		247,501		1,103,485	977,393	866,766
Net income	$152,347		$186,489		$177,127		$154,329		$132,802		$159,332		$146,120		$147,492		$670,292	$585,746	$507,673
Earnings per share - basic	$1.43	[1]	$1.72	[1]	$1.61	[1]	$1.38	[1]	$1.16	[1]	$1.34	[1]	$1.17	[1]	$1.16	[1]	$6.14	$4.83	$3.77
Earnings per share - assuming dilution	$1.40	[1]	$1.69	[1]	$1.58	[1]	$1.36	[1]	$1.14	[1]	$1.32	[1]	$1.15	[1]	$1.14	[1]	$6.03	$4.75	$3.71
[1]	Earnings per share amounts are computed independently for each quarter and annual period. The quarterly earnings per share amounts may not sum to equal the full-year earnings per share.

Schedule_II_Valuation_and_Qual2

Schedule II - Valuation and Qualifying Accounts (Valuation and Qualifying Accounts) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Sales returns and allowances [Member]	'		'		'
Balance at beginning of period	$7,326		$6,406		$5,634
Additions - charged to costs and expenses	-826		920		772
Additions - charged to other accounts - describe	0		0		0
Deductions - describe	0		0		0
Balance at end of period	6,500		7,326		6,406
Allowance for doubtful accounts [Member]	'		'		'
Balance at beginning of period	6,447		6,403		8,349
Additions - charged to costs and expenses	8,499		8,043		7,695
Additions - charged to other accounts - describe	0		0		0
Deductions - describe	8,285	[1]	7,999	[1]	9,641	[1]
Balance at end of period	$6,661		$6,447		$6,403
[1]	Uncollectable accounts written off.