LKQ (LKQ) 8-K 27 Jan 14 Other Events Financial data

Document_and_Entity_Informatio

Document and Entity Information	0 Months Ended
	Jan. 27, 2014
Document and Entity Information [Abstract]	'
Document Type	'8-K
Amendment Flag	'false
Document Period End Date	27-Jan-14
Entity Registrant Name	'LKQ CORP
Entity Central Index Key	'0001065696

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Current Assets:	'	'	'
Cash and equivalents	$107,337	$59,770	$48,247
Receivables, net	438,800	311,808	281,764
Inventory	1,018,169	900,803	736,846
Deferred income taxes	53,129	53,485	45,690
Prepaid income taxes	13,825	29,537	17,597
Prepaid expenses and other current assets	44,391	28,948	19,591
Total Current Assets	1,675,651	1,384,351	1,149,735
Property and Equipment, net	531,897	494,379	424,098
Intangible Assets:	'	'	'
Goodwill	1,920,916	1,690,284	1,476,063
Other intangibles, net	154,429	106,715	108,910
Other Assets	78,166	47,727	40,898
Total Assets	4,361,059	3,723,456	3,199,704
Current Liabilities:	'	'	'
Accounts payable	284,900	219,335	210,875
Accrued expenses:	'	'	'
Accrued payroll-related liabilities	66,366	44,400	53,256
Other accrued expenses	146,641	90,422	77,769
Income taxes payable	16,473	2,748	7,262
Contingent consideration liabilities	49,275	42,255	600
Other current liabilities	17,735	17,068	18,407
Current portion of long-term obligations	61,123	71,716	29,524
Total Current Liabilities	642,513	487,944	397,693
Long-Term Obligations, Excluding Current Portion	1,250,932	1,046,762	926,552
Deferred Income Taxes	118,693	102,275	88,796
Contingent Consideration Liabilities	5,210	47,754	81,782
Other Noncurrent Liabilities	89,605	74,627	60,796
Commitments and Contingencies	'	'	'
Stockholders’ Equity:	'	'	'
Common stock, $0.01 par value	3,005	2,978	2,939
Additional paid-in capital	996,248	950,338	901,313
Retained earnings	1,243,778	1,010,019	748,794
Accumulated other comprehensive income (loss)	11,075	759	-8,961
Total Stockholders’ Equity	2,254,106	1,964,094	1,644,085
Total Liabilities and Stockholders’ Equity	$4,361,059	$3,723,456	$3,199,704

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Financial Position [Abstract]	'	'	'
Common stock, par value	$0.01	$0.01	$0.01
Common stock, shares authorized	1,000,000,000	500,000,000	500,000,000
Common stock, shares issued	300,548,111	297,810,896	293,897,216
Common stock, shares outstanding	300,548,111	297,810,896	293,897,216

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Income Statement [Abstract]	'		'		'
Revenue	$4,122,930		$3,269,862		$2,469,881
Cost of goods sold	2,398,790		1,877,869		1,376,401
Gross margin	1,724,140		1,391,993		1,093,480
Facility and warehouse expenses	347,917		293,423		233,993
Distribution expenses	375,835		287,626		212,718
Selling, general and administrative expenses	495,591		391,942		310,228
Restructuring and acquisition related expenses	2,751		7,590		668
Depreciation and amortization	64,093		49,929		37,996
Operating income	437,953		361,483		297,877
Other expense (income):	'		'		'
Interest expense, net	-31,215		-22,447		-28,316
Interest expense	31,429		24,307		29,765
Loss on debt extinguishment	0		5,345		0
Change in fair value of contingent consideration liabilities	1,643		-1,408		0
Interest and other income, net	-4,286		-2,532		-2,013
Total other expense, net	28,786		25,712		27,752
Income from continuing operations before provision for income taxes	409,167		335,771		270,125
Provision for income taxes	147,942		125,507		103,007
Income from continuing operations	261,225		210,264		167,118
Discontinued operations:	'		'		'
Income from discontinued operations, net of taxes	0		0		224
Gain on sale of discontinued operations, net of taxes	0		0		1,729
Income from discontinued operations	0		0		1,953
Net income	$261,225		$210,264		$169,071
Basic earnings per share:	'		'		'
Income from continuing operations	$0.88	[1]	$0.72	[1]	$0.58	[1]
Income from discontinued operations	$0	[1]	$0	[1]	$0.01	[1]
Total	$0.88	[1]	$0.72	[1]	$0.59	[1]
Diluted earnings per share:	'		'		'
Income from continuing operations	$0.87	[1]	$0.71	[1]	$0.57	[1]
Income from discontinued operations	$0	[1]	$0	[1]	$0.01	[1]
Total	$0.87	[1]	$0.71	[1]	$0.58	[1]
[1]	The sum of the individual earnings per share amounts may not equal the total due to rounding.

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2011

Sep. 30, 2011

Jun. 30, 2011

Mar. 31, 2011

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Statement of Other Comprehensive Income [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income

$73,445

$62,188

[1]

$54,048

[1]

$63,998

[1]

$80,991

[1]

$56,145

$49,231

$46,706

$58,182

$233,759

$199,037

$261,225

$210,264

$169,071

Other comprehensive income (loss), net of tax:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Foreign currency translation

28,514

'

10,182

'

'

'

'

'

'

6,330

12,518

12,921

-4,273

3,078

Net change in unrecognized gains (losses) on interest rate swaps, net of tax

625

'

-1,242

'

'

'

'

'

'

3,986

-4,233

-3,201

-9,066

8,712

Reversal of unrealized gain on pension plan, net of tax

'

'

'

'

'

'

'

'

'

'

'

0

0

-15

Total other comprehensive income (loss)

29,139

'

8,940

'

'

'

'

'

'

10,316

8,285

9,720

-13,339

11,775

Total comprehensive income

$102,584

'

$62,988

'

'

'

'

'

'

$244,075

$207,322

$270,945

$196,925

$180,846

[1]

Gross margin and operating income during the quarters ended March 31, 2012, June 30, 2012, September 30, 2012 and December 31, 2012 include gains of $8.3 million, $8.4 million, $0.5 million and $0.7 million, respectively, resulting from lawsuit settlements with certain of our aftermarket product suppliers as discussed in Note 8, "Commitments and Contingencies."

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'	'	'	'
Net income	$233,759	$199,037	$261,225	$210,264	$169,071
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'	'	'
Depreciation and amortization	61,868	51,574	70,165	54,505	41,428
Stock-based compensation expense	16,292	11,976	15,634	13,107	9,974
Deferred income taxes	'	'	4,222	9,302	8,963
Excess tax benefit from stock-based payments	-15,998	-11,071	-15,737	-7,973	-15,000
Other	7,424	3,961	4,515	6,556	-47
Changes in operating assets and liabilities, net of effects from acquisitions and divestitures:	'	'	'	'	'
Receivables	-35,287	-12,394	-12,813	-18,074	-12,309
Inventory	-18,207	-47,669	-95,042	-90,091	-67,795
Prepaid expenses and other assets	'	'	-18,952	-5,094	-5,240
Prepaid income taxes/income taxes payable	40,551	2,688	-774	2,251	7,492
Accounts payable	1,641	-7,892	-15,097	28,589	10,156
Accrued expenses and other current liabilities	'	'	2,208	-3,303	8,056
Other noncurrent liabilities	'	'	-6,636	-11,733	-4,434
Other operating assets and liabilities	-48,886	8,138	'	'	'
Net cash provided by operating activities	340,929	182,072	206,190	211,772	159,183
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'	'	'	'
Purchases of property and equipment	-61,126	-60,636	-88,255	-86,416	-61,438
Proceeds from sales of property and equipment	1,459	692	1,057	1,743	1,441
Investment in unconsolidated subsidiary	-9,136	0	'	'	'
Proceeds from sale of businesses, net of cash sold	'	'	0	0	11,992
Acquisitions, net of cash acquired	-395,974	-133,123	-265,336	-486,934	-143,578
Net cash used in investing activities	-464,777	-193,067	-352,534	-571,607	-191,583
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'	'	'	'
Proceeds from exercise of stock options	13,647	14,187	17,693	11,919	13,962
Excess tax benefit from stock-based payments	15,998	11,071	15,737	7,973	15,000
Debt issuance costs	-16,912	-175	-253	-11,048	-419
Proceeds from issuance of senior notes	600,000	0	'	'	'
Borrowings under revolving credit facility	399,758	500,087	742,381	1,111,369	0
Repayments under revolving credit facility	-745,313	-747,851	-855,402	-453,867	0
Borrowings under term loans	35,000	200,000	200,000	250,000	0
Repayments under term loans	-11,250	-14,375	-20,000	-600,464	-7,476
Borrowings under receivables securitization facility	41,500	77,272	82,700	0	0
Repayments under receivables securitization facility	-111,500	0	-2,700	0	0
Repayments of other long-term debt	-19,518	-8,336	'	'	'
Payments of other obligations	-32,091	-600	-23,084	-4,471	-2,105
Net cash provided by financing activities	169,319	31,280	157,072	311,411	18,962
Effect of exchange rate changes on cash and equivalents	2,096	682	795	982	221
Net increase (decrease) in cash and equivalents	47,567	20,967	11,523	-47,442	-13,217
Cash and equivalents, beginning of period	59,770	48,247	48,247	95,689	108,906
Cash and equivalents, end of period	107,337	69,214	59,770	48,247	95,689
Supplemental disclosure of cash paid for:	'	'	'	'	'
Income taxes, net of refunds	82,536	110,911	146,478	113,433	88,294
Interest	22,853	20,823	29,026	21,354	27,421
Supplemental disclosure of noncash investing and financing activities:	'	'	'	'	'
Notes payable and long-term obligations, including notes issued in connection with business acquisitions	10,728	8,272	17,637	42,865	11,889
Contingent consideration liabilities	3,854	5,540	5,456	81,239	2,000
Stock issued in connection with business acquisitions	'	'	0	0	14,945
Debt assumed with business acquisitions	'	'	3,989	13,564	0
Property and equipment acquired under capital leases	'	'	14,467	414	0
Non-cash property and equipment additions	$2,657	$9,487	$6,564	$3,567	$1,425

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (USD $)	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income
In Thousands, except Share data
Beginning Balance at Dec. 31, 2009	$1,179,434	$2,840	$814,532	$369,459	($7,397)
Beginning Balance, shares at Dec. 31, 2009	'	284,010,000	'	'	'
Net income	169,071	'	'	169,071	'
Other comprehensive income (loss)	11,775	'	'	'	11,775
Stock issued in business acquisitions, shares	'	1,379,000	'	'	'
Stock issued in business acquisitions, value	14,945	14	14,931	'	'
Stock issued as director compensation, shares	'	28,000	'	'	'
Stock issued as director compensation, value	290	'	290	'	'
Stock-based compensation expense	9,684	'	9,684	'	'
Exercise of stock options, shares	'	5,516,000	'	'	'
Exercise of stock options, value	13,962	55	13,907	'	'
Excess tax benefit from stock-based payments	15,000	'	15,000	'	'
Ending Balance at Dec. 31, 2010	1,414,161	2,909	868,344	538,530	4,378
Ending Balance, shares at Dec. 31, 2010	'	290,933,000	'	'	'
Net income	210,264	'	'	210,264	'
Other comprehensive income (loss)	-13,339	'	'	'	-13,339
Stock issued in business acquisitions, value	0	'	'	'	'
Restricted stock units vested, shares	'	164,000	'	'	'
Restricted stock units vested, value	'	2	-2	'	'
Stock issued as director compensation, shares	'	32,000	'	'	'
Stock issued as director compensation, value	399	'	399	'	'
Stock-based compensation expense	12,708	'	12,708	'	'
Exercise of stock options, shares	'	2,768,000	'	'	'
Exercise of stock options, value	11,919	28	11,891	'	'
Excess tax benefit from stock-based payments	7,973	'	7,973	'	'
Ending Balance at Dec. 31, 2011	1,644,085	2,939	901,313	748,794	-8,961
Ending Balance, shares at Dec. 31, 2011	'	293,897,000	'	'	'
Net income	261,225	'	'	261,225	'
Other comprehensive income (loss)	9,720	'	'	'	9,720
Stock issued in business acquisitions, value	0	'	'	'	'
Restricted stock units vested, shares	'	467,000	'	'	'
Restricted stock units vested, value	'	5	-5	'	'
Stock-based compensation expense	15,634	'	15,634	'	'
Exercise of stock options, shares	'	3,447,000	'	'	'
Exercise of stock options, value	17,693	34	17,659	'	'
Excess tax benefit from stock-based payments	15,737	'	15,737	'	'
Ending Balance at Dec. 31, 2012	1,964,094	2,978	950,338	1,010,019	759
Ending Balance, shares at Dec. 31, 2012	'	297,811,000	'	'	'
Net income	233,759	'	'	233,759	'
Other comprehensive income (loss)	10,316	'	'	'	10,316
Restricted stock units vested, shares	'	594,000	'	'	'
Restricted stock units vested, value	'	6	-6	'	'
Stock-based compensation expense	16,292	'	16,292	'	'
Exercise of stock options, shares	'	2,143,000	'	'	'
Exercise of stock options, value	13,647	21	13,626	'	'
Excess tax benefit from stock-based payments	15,998	'	15,998	'	'
Ending Balance at Sep. 30, 2013	$2,254,106	$3,005	$996,248	$1,243,778	$11,075
Ending Balance, shares at Sep. 30, 2013	'	300,548,000	'	'	'

Business

Business	12 Months Ended
	Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Business	'
	Business
	The financial statements presented in this report represent the consolidation of LKQ Corporation, a Delaware corporation, and its subsidiaries. LKQ Corporation is a holding company and all operations are conducted by subsidiaries. When the terms "the Company," "we," "us," or "our" are used in this document, those terms refer to LKQ Corporation and its consolidated subsidiaries.
	We provide replacement parts, components and systems needed to repair cars and trucks. We are the nation's largest provider of alternative vehicle collision replacement products, and a leading provider of alternative vehicle mechanical replacement products. We also have operations in the United Kingdom, Canada, Mexico and Central America. In total, we operate more than 500 facilities.
	As described in Note 3, "Discontinued Operations," during 2010, we sold certain of our self service facilities. These facilities qualified for treatment as discontinued operations. The financial results of these facilities are segregated from our continuing operations and presented as discontinued operations in the Consolidated Statements of Income for all periods presented. The remaining liabilities of discontinued operations are not material to our financial position for the periods presented.
	In 2012, our Board of Directors approved a two-for-one split of our common stock. The stock split was completed in the form of a stock dividend that was issued on September 18, 2012 to stockholders of record at the close of business on August 28, 2012. The stock began trading on a split adjusted basis on September 19, 2012. The Company’s historical share and per share information within this Annual Report on Form 10-K has been retroactively adjusted to give effect to this stock split.

Interim_Financial_Statements

Interim Financial Statements	9 Months Ended
	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Interim Financial Statements	'
	Interim Financial Statements
	The unaudited financial statements presented in this report represent the consolidation of LKQ Corporation, a Delaware corporation, and its subsidiaries. LKQ Corporation is a holding company and all operations are conducted by subsidiaries. When the terms "LKQ," "the Company," "we," "us," or "our" are used in this document, those terms refer to LKQ Corporation and its consolidated subsidiaries.
	We have prepared the accompanying unaudited consolidated condensed financial statements pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC") applicable to interim financial statements. Accordingly, certain information related to our significant accounting policies and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States have been condensed or omitted. These unaudited consolidated condensed financial statements reflect, in the opinion of management, all material adjustments (which include only normal recurring adjustments) necessary to fairly state, in all material respects, our financial position, results of operations and cash flows for the periods presented.
	During the 2013 Annual Meeting of Stockholders in May 2013, our stockholders approved an amendment to our Certificate of Incorporation to increase the number of authorized shares of common stock from 500 million to 1 billion. The increased number of authorized shares is reflected on our Unaudited Consolidated Condensed Balance Sheet as of September 30, 2013.
	Operating results for interim periods are not necessarily indicative of the results that can be expected for any subsequent interim period or for a full year. These interim financial statements should be read in conjunction with our audited consolidated financial statements and notes thereto included in our most recent Annual Report on Form 10-K for the year ended December 31, 2012 filed with the SEC on March 1, 2013.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	9 Months Ended																12 Months Ended
	Sep. 30, 2013																Dec. 31, 2012
Accounting Policies [Abstract]	'																'
Summary of Significant Accounting Policies	'																'
	Financial Statement Information																Summary of Significant Accounting Policies
	Revenue Recognition																Principles of Consolidation
	The majority of our revenue is derived from the sale of vehicle parts. Revenue is recognized when the products are shipped, delivered to or picked up by customers and title has transferred, subject to an allowance for estimated returns, discounts and allowances that we estimate based upon historical information. We recorded a reserve for estimated returns, discounts and allowances of $30.5 million and $24.7 million at September 30, 2013 and December 31, 2012, respectively. We present taxes assessed by governmental authorities collected from customers on a net basis. Therefore, the taxes are excluded from revenue on our Unaudited Consolidated Condensed Statements of Income and are shown as a current liability on our Unaudited Consolidated Condensed Balance Sheets until remitted. We recognize revenue from the sale of scrap, cores and other metals when title has transferred, which typically occurs upon delivery to the customer.																The accompanying consolidated financial statements include the accounts of LKQ Corporation and its subsidiaries. All intercompany transactions and accounts have been eliminated.
	Receivables																Use of Estimates
	We recorded a reserve for uncollectible accounts of $14.1 million and $9.5 million at September 30, 2013 and December 31, 2012, respectively.																In preparing our financial statements in conformity with accounting principles generally accepted in the United States we are required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.
	Inventory																Revenue Recognition
	Inventory consists of the following (in thousands):																The majority of our revenue is derived from the sale of vehicle parts. Revenue is recognized when the products are shipped or picked up by customers and title has transferred, subject to an allowance for estimated returns, discounts and allowances that we estimate based upon historical information. We recorded a reserve for estimated returns, discounts and allowances of approximately $24.7 million and $22.8 million at December 31, 2012 and 2011, respectively. We present taxes assessed by governmental authorities collected from customers on a net basis. Therefore, the taxes are excluded from revenue on our Consolidated Statements of Income and are shown as a current liability on our Consolidated Balance Sheets until remitted. Revenue from the sale of separately-priced extended warranty contracts is reported as deferred revenue and recognized ratably over the term of the contracts or three years in the case of lifetime warranties. We recognize revenue from the sale of scrap, cores and other metals when title has transferred, which typically occurs upon delivery to the customer.
																	Shipping & Handling
																	Revenue also includes amounts billed to customers related to shipping and handling of approximately $25.6 million, $23.9 million and $17.3 million during the years ended December 31, 2012, 2011 and 2010, respectively. Distribution expenses in the accompanying Consolidated Statements of Income are the costs incurred to prepare and deliver products to customers.
		September 30,			December 31,												Receivables and Allowance for Doubtful Accounts
		2013			2012												In the normal course of business, we extend credit to customers after a review of each customer's credit history. We recorded a reserve for uncollectible accounts of approximately $9.5 million and $8.3 million at December 31, 2012 and 2011, respectively. The reserve is based upon the aging of the accounts receivable, our assessment of the collectability of specific customer accounts and historical experience. Receivables are written off once collection efforts have been exhausted. Recoveries of receivables previously written off are recorded when received.
	Aftermarket and refurbished products	$	649,768		$	523,677											Concentrations of Credit Risk
																	Financial instruments that potentially subject us to significant concentration of credit risk consist primarily of cash and equivalents and accounts receivable. We control our exposure to credit risk associated with these instruments by (i) placing our cash and equivalents with several major financial institutions; (ii) holding high-quality financial instruments; and (iii) maintaining strict policies over credit extension that include credit evaluations, credit limits and monitoring procedures. In addition, our overall credit risk with respect to accounts receivable is limited to some extent because our customer base is composed of a large number of geographically diverse customers.
	Salvage and remanufactured products	368,401			377,126												Inventory
																	We classify our inventory into the following categories: aftermarket and refurbished vehicle replacement products; and salvage and remanufactured vehicle replacement products. This classification reflects the historically distinct distribution channels used in the sale of alternative repair products in North America, although we continue to work toward integrating these distribution channels.
		$	1,018,169		$	900,803											An aftermarket product is a new vehicle product manufactured by a company other than the original equipment manufacturer. Cost is established based on the average price we pay for parts, and includes expenses incurred for freight and overhead costs. For items purchased from foreign companies, import fees and duties and transportation insurance are also included. Refurbished inventory cost is based on the average price we pay for cores, which are recycled automotive parts that are not suitable for sale as a replacement part without further processing. The cost of our refurbished inventory also includes expenses incurred for freight, labor and other overhead.
																	A salvage product is a recycled vehicle part suitable for sale as a replacement part. Cost is established based upon the price we pay for a vehicle, including auction, storage and towing fees, as well as expenditures for buying and dismantling. Inventory carrying value is determined using the average cost to sales percentage at each of our facilities and applying that percentage to the facility's inventory at expected selling prices. The average cost to sales percentage is derived from each facility's historical vehicle profitability for salvage vehicles purchased at auction or from contracted rates for salvage vehicles acquired under certain direct procurement arrangements. Remanufactured inventory cost is based upon the price paid for cores, and also includes expenses incurred for freight, direct manufacturing costs and overhead.
	Intangible Assets																For all inventory, carrying value is recorded at the lower of cost or market and is reduced to reflect the age of the inventory and current anticipated demand. If actual demand differs from our estimates, additional reductions to inventory carrying value would be necessary in the period such determination is made.
	Intangible assets consist primarily of goodwill (the cost of purchased businesses in excess of the fair value of the identifiable net assets acquired) and other specifically identifiable intangible assets, such as trade names, trademarks, customer relationships and covenants not to compete.																Inventory consists of the following (in thousands):
	The change in the carrying amount of goodwill by reportable segment during the nine months ended September 30, 2013 is as follows (in thousands):
																		December 31,
		North America			Europe			Total										2012			2011
	Balance as of January 1, 2013	$	1,339,831		$	350,453		$	1,690,284								Aftermarket and refurbished products	$	523,677		$	445,787
	Business acquisitions and adjustments to previously recorded goodwill	17,623			209,638			227,261									Salvage and remanufactured products	377,126			291,059
	Exchange rate effects	(4,407		)	7,778			3,371										$	900,803		$	736,846
	Balance as of September 30, 2013	$	1,353,047		$	567,869		$	1,920,916								Property and Equipment
																	Property and equipment are recorded at cost. Expenditures for major additions and improvements that extend the useful life of the related asset are capitalized. As property and equipment are sold or retired, the applicable cost and accumulated depreciation are removed from the accounts and any resulting gain or loss thereon is recognized. Construction in progress consists primarily of building and land improvements at our existing facilities. Depreciation is calculated using the straight-line method over the estimated useful lives or, in the case of leasehold improvements, the term of the related lease and reasonably assured renewal periods, if shorter.
	The components of other intangibles are as follows (in thousands):																The internal and external costs incurred to develop internal use computer software during the application development stage of the implementation, including the design of the chosen path, are capitalized. Other costs, including expenses incurred during the preliminary project stage, training expenses, data conversion costs and expenses incurred in the post implementation stage are expensed in the period incurred. Capitalized costs are amortized ratably over the useful life of the software when the software becomes operational. Upgrades and enhancements to internal use software are capitalized only if the costs result in additional functionality. We do not plan to sell or market our internal use computer software to third parties.
																	Our estimated useful lives are as follows:
		September 30, 2013								December 31, 2012
		Gross			Accumulated			Net		Gross		Accumulated			Net		Land improvements	10-20 years
		Carrying			Amortization					Carrying		Amortization					Buildings and improvements	20-40 years
		Amount								Amount							Furniture, fixtures and equipment	3-20 years
	Trade names and trademarks	$	144,254		$	(26,167	)	$	118,087	$	118,422	$	(21,599	)	$	96,823	Computer equipment and software	3-10 years
																	Vehicles and trailers	3-10 years
	Customer relationships	45,252			(10,616		)	34,636		14,426		(6,642		)	7,784		Property and equipment consists of the following (in thousands):
	Covenants not to compete	3,822			(2,116		)	1,706		3,654		(1,546		)	2,108
																		December 31,
		$	193,328		$	(38,899	)	$	154,429	$	136,502	$	(29,787	)	$	106,715		2012			2011
																	Land and improvements	$	87,720		$	81,170
	During the nine months ended September 30, 2013, we recorded $24.7 million of trade names and $25.3 million of customer relationships for our acquisition of Sator Beheer B.V. ("Sator") as discussed in Note 9, "Business Combinations." Trade names and trademarks are amortized over a useful life ranging from 10 to 30 years on a straight-line basis. Customer relationships are amortized over the expected period to be benefited (5 to 15 years) on either a straight-line or accelerated basis. Covenants not to compete are amortized over the lives of the respective agreements, which range from one to five years, on a straight-line basis. Amortization expense for intangibles was $9.0 million and $7.1 million during the nine month periods ended September 30, 2013 and 2012, respectively. Estimated amortization expense for each of the five years in the period ending December 31, 2017 is $13.0 million, $14.2 million, $12.8 million, $11.4 million and $10.5 million, respectively.
	Investment in Unconsolidated Subsidiary																Buildings and improvements	133,368			119,414
	In August 2013, we entered into an agreement with Suncorp Group, a leading general insurance group in Australia and New Zealand, to develop an alternative vehicle replacement parts business in those countries. We hold a 49% equity interest in the entity and will contribute our experience to help establish automotive parts recycling operations and to facilitate the procurement of aftermarket parts; Suncorp Group holds a 51% equity interest and will supply salvage vehicles to the venture as well as assist in establishing relationships with repair shops as customers. We are accounting for our interest in this subsidiary using the equity method of accounting, as our investment gives us the ability to exercise significant influence, but not control, over the investee. The total of our investment in the equity-method investee is included within Other Assets on our Unaudited Consolidated Condensed Balance Sheets. As of September 30, 2013, the carrying value of our investment in this unconsolidated subsidiary was $9.3 million. Our equity in the net earnings of the investee for the three months ended September 30, 2013 was not material.
	Depreciation Expense																Furniture, fixtures and equipment	243,565			192,514
	Included in Cost of Goods Sold on the Unaudited Consolidated Condensed Statements of Income is depreciation expense associated with our refurbishing, remanufacturing, and furnace operations and our distribution centers.
	Warranty Reserve																Computer equipment and software	91,588			79,195
	Some of our salvage mechanical products are sold with a standard six month warranty against defects. Additionally, some of our remanufactured engines are sold with a standard three year warranty against defects. We also provide a limited lifetime warranty for certain of our aftermarket products. We record the estimated warranty costs at the time of sale using historical warranty claim information to project future warranty claims activity. The changes in the warranty reserve during the nine month period ended September 30, 2013 were as follows (in thousands):
																	Vehicles and trailers	51,187			40,825
																	Leasehold improvements	91,280			69,079
	Balance as of January 1, 2013	$	10,574
																		698,708			582,197
	Warranty expense	22,652
																	Less—Accumulated depreciation	(231,130		)	(179,950		)
	Warranty claims	(21,109		)													Construction in progress	26,801			21,851
	Balance as of September 30, 2013	$	12,117
																		$	494,379		$	424,098
	For an additional fee, we also sell extended warranty contracts for certain mechanical products. The expense related to extended warranty claims is recognized when the claim is made.
	Recent Accounting Pronouncements																Intangibles
	Effective January 1, 2013, we adopted the Financial Accounting Standards Board ("FASB") Accounting Standards Update ("ASU") 2013-02, "Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income." This update requires disclosure of amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the financial statements or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income. For amounts that are not required to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures that provide additional details about those amounts. The update does not change the items reported in other comprehensive income or when an item of other comprehensive income is reclassified to net income. As this guidance only revises the presentation and disclosures related to the reclassification of items out of accumulated other comprehensive income, the adoption of this guidance did not affect our financial position, results of operations or cash flows. See Note 12, "Accumulated Other Comprehensive Income" for the additional required disclosures.																Intangible assets consist primarily of goodwill (the cost of purchased businesses in excess of the fair value of the identifiable net assets acquired) and other specifically identifiable intangible assets, such as trade names, trademarks, customer relationships and covenants not to compete.
																	Goodwill is tested for impairment at least annually, and we performed annual impairment tests during the fourth quarters of 2012, 2011 and 2010. The results of all of these tests indicated that goodwill was not impaired.
																	The changes in the carrying amount of goodwill by reportable segment are as follows (in thousands):
																		North America			Europe			Total
																	Balance as of January 1, 2010	$	938,783		$	—		$	938,783
																Business acquisitions and adjustments to previously recorded goodwill	91,757			—			91,757
																Exchange rate effects	2,433			—			2,433
																Balance as of December 31, 2010	$	1,032,973		$	—		$	1,032,973
																Business acquisitions and adjustments to previously recorded goodwill	105,177			337,031			442,208
																Exchange rate effects	(1,520		)	2,402			882
																Balance as of December 31, 2011	$	1,136,630		$	339,433		$	1,476,063
																Business acquisitions and adjustments to previously recorded goodwill	201,742			(4,140		)	197,602
																Exchange rate effects	1,459			15,160			16,619
																Balance as of December 31, 2012	$	1,339,831		$	350,453		$	1,690,284
																In 2011 and 2012, we finalized the valuation of certain intangible assets acquired related to our 2010 and 2011 acquisitions, respectively. As these adjustments did not have a material impact on our financial position or results of operations, we recorded these adjustments to goodwill and amortization expense in 2011 and 2012, respectively.
																The components of other intangibles are as follows (in thousands):
																	December 31, 2012								December 31, 2011
																	Gross			Accumulated			Net		Gross		Accumulated			Net
																	Carrying			Amortization					Carrying		Amortization
																	Amount								Amount
																Trade names and trademarks	$	118,422		$	(21,599	)	$	96,823	$	115,954	$	(16,305	)	$	99,649
																Customer relationships	14,426			(6,642		)	7,784		10,050		(3,065		)	6,985
																Covenants not to compete	3,654			(1,546		)	2,108		3,194		(918		)	2,276
																	$	136,502		$	(29,787	)	$	106,715	$	129,198	$	(20,288	)	$	108,910
																In 2012, we recorded $0.6 million of trade names, $4.1 million of customer relationships and $0.6 million of covenants not to compete resulting from our 2012 acquisitions and adjustments to certain preliminary intangible asset valuations from our 2011 acquisitions. In 2011, we recorded $40.1 million of trade names, $5.7 million of customer relationships and $1.5 million of covenants not to compete resulting from our 2011 acquisitions and adjustments to certain preliminary intangible asset valuations from our 2010 acquisitions. The trade names recorded in 2011 included $39.3 million for the Euro Car Parts trade name related to our acquisition of Euro Car Parts Holdings Limited (“ECP”) effective October 1, 2011. Trade names and trademarks are amortized over a useful life ranging from 10 to 30 years on a straight-line basis. Customer relationships are amortized over the expected period to be benefited (5 to 10 years) on either a straight-line or accelerated basis. Covenants not to compete are amortized over the lives of the respective agreements, which range from one to five years, on a straight-line basis. Amortization expense for intangibles was $9.5 million, $7.9 million and $4.2 million during the years ended December 31, 2012, 2011 and 2010, respectively. Estimated amortization expense for each of the five years in the period ending December 31, 2017 is $8.8 million, $7.9 million, $7.1 million, $6.3 million and $6.0 million, respectively.
																Impairment of Long-Lived Assets
																Long-lived assets are reviewed for possible impairment whenever events or circumstances indicate that the carrying amount of such assets may not be recoverable. If such review indicates that the carrying amount of long-lived assets is not recoverable, the carrying amount of such assets is reduced to fair value. There were no material adjustments to the carrying value of long-lived assets of continuing operations during the years ended December 31, 2012, 2011 or 2010.
																Product Warranties
																Some of our salvage mechanical products are sold with a standard six month warranty against defects. Additionally, some of our remanufactured engines are sold with a standard three year warranty against defects. We also provide a limited lifetime warranty for certain of our aftermarket products. We record the estimated warranty costs at the time of sale using historical warranty claim information to project future warranty claims activity. The changes in the warranty reserve are as follows (in thousands):
																Balance as of January 1, 2011	$	2,063
																Warranty expense	22,364
																Warranty claims	(20,802		)
																Business acquisitions	3,722
																Balance as of December 31, 2011	$	7,347
																Warranty expense	29,628
																Warranty claims	(27,514		)
																Business acquisitions	1,113
																Balance as of December 31, 2012	$	10,574
																For an additional fee, we also sell extended warranty contracts for certain mechanical products. The expense related to extended warranty claims is recognized when the claim is made.
																Self-Insurance Reserves
																We self-insure a portion of employee medical benefits under the terms of our employee health insurance program. We purchase certain stop-loss insurance to limit our liability exposure. We also self-insure a portion of our property and casualty risk, which includes automobile liability, general liability, directors and officers liability, workers' compensation and property coverage, under deductible insurance programs. The insurance premium costs are expensed over the contract periods. A reserve for liabilities associated with these losses is established for claims filed and claims incurred but not yet reported based upon our estimate of ultimate cost, which is calculated using analyses of historical data. We monitor new claims and claim development as well as trends related to the claims incurred but not reported in order to assess the adequacy of our insurance reserves. Total self-insurance reserves were $44.1 million and $37.4 million, including $21.5 million and $18.2 million classified as Other Accrued Expenses, as of December 31, 2012 and 2011, respectively. The remaining balances of self-insurance reserves are classified as Other Noncurrent Liabilities, which reflects management's estimates of when claims will be paid. The reserves presented on the Consolidated Balance Sheets are net of claims deposits of $0.5 million at both December 31, 2012 and 2011. In addition to these claims deposits, we had outstanding letters of credit of $37.1 million and $31.8 million at December 31, 2012 and 2011, respectively, to guarantee self-insurance claims payments. While we do not expect the amounts ultimately paid to differ significantly from our estimates, our insurance reserves and corresponding expenses could be affected if future claims experience differs significantly from historical trends and assumptions.
																Income Taxes
																Current income taxes are provided on income reported for financial reporting purposes, adjusted for transactions that do not enter into the computation of income taxes payable in the same year. Deferred income taxes have been provided to show the effect of temporary differences between the tax bases of assets and liabilities and their reported amounts in the financial statements. A valuation allowance is provided for deferred tax assets if it is more likely than not that these items will either expire before we are able to realize their benefit or that future deductibility is uncertain.
																We recognize the benefits of uncertain tax positions taken or expected to be taken in tax returns in the provision for income taxes only for those positions that are more likely than not to be realized. We follow a two-step approach to recognizing and measuring uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement. We consider many factors when evaluating and estimating our tax positions and tax benefits, which may require periodic adjustments and which may not accurately forecast actual outcomes. Our policy is to include interest and penalties associated with income tax obligations in income tax expense.
																U.S. federal income taxes are not provided on our interest in undistributed earnings of foreign subsidiaries when it is management's intent that such earnings will remain invested in those subsidiaries or other foreign subsidiaries. Taxes will be provided on these earnings in the period in which a decision is made to repatriate the earnings.
																Depreciation Expense
																Included in Cost of Goods Sold on the Consolidated Statements of Income is depreciation expense associated with our refurbishing, remanufacturing, and furnace operations and our distribution centers.
																Rental Expense
																We recognize rental expense on a straight-line basis over the respective lease terms, including reasonably-assured renewal periods, for all of our operating leases.
																Foreign Currency Translation
																For most of our foreign operations, the local currency is the functional currency. Assets and liabilities are translated into U.S. dollars at the period-ending exchange rate. Statements of Income amounts are translated to U.S. dollars using average exchange rates during the period. Translation gains and losses are reported as a component of Accumulated Other Comprehensive Income (Loss) in stockholders' equity.
																Recent Accounting Pronouncements
																Effective January 1, 2012, we adopted the Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) No. 2011-05, “Presentation of Comprehensive Income” and ASU No. 2011-12, “Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05.” These ASUs eliminate the option to present the components of other comprehensive income in the statement of changes in stockholders’ equity. Instead, entities have the option to present the components of net income, the components of other comprehensive income and total comprehensive income in a single continuous statement or in two separate but consecutive statements. The amendments did not change the items reported in other comprehensive income or when an item of other comprehensive income is reclassified to net income. As a result, the adoption of this guidance did not affect our financial position, results of operations or cash flows. We have presented the components of net income, the components of other comprehensive income and total comprehensive income in two separate but consecutive statements.
																Additionally, in February 2013, the FASB issued ASU 2013-02, “Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income.” This update requires disclosure of amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the financial statements or in the notes, significant amounts reclassified out of AOCI by the respective line items of net income. For amounts that are not required to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures that provide additional details about those amounts. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2012. The update does not change the items reported in other comprehensive income or when an item of other comprehensive income is reclassified to net income. As this guidance only revises the presentation and disclosures related to the reclassification of items out of accumulated other comprehensive income, the adoption of this guidance will not affect our financial position, results of operations or cash flows.
																Effective January 1, 2012, we adopted FASB ASU No. 2011-04, “Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs.” This update clarifies existing fair value measurement requirements, amends existing guidance primarily related to fair value measurements for financial instruments, and requires enhanced disclosures on fair value measurements. The additional disclosures are specific to Level 3 fair value measurements, transfers between Level 1 and Level 2 of the fair value hierarchy, financial instruments not measured at fair value and use of an asset measured or disclosed at fair value differing from its highest and best use. We applied the provisions of this ASU to our fair value measurements during the current year, however, the adoption did not have a material effect on our financial statements. See Note 7, "Fair Value Measurements," for the required disclosures.

Discontinued_Operations

Discontinued Operations	12 Months Ended
	Dec. 31, 2012
Discontinued Operations and Disposal Groups [Abstract]	'
Discontinued Operations	'
	Discontinued Operations
	In connection with our 2009 agreement with Schnitzer Steel Industries, Inc., we agreed to sell two self service retail facilities in Dallas, Texas on January 15, 2010 for $12.0 million. We recognized a gain on the sale of approximately $1.7 million, net of tax, in our first quarter 2010 results. Goodwill totaling $6.7 million was included in the cost basis of net assets disposed when determining the gain on sale.
	The self service facilities that we sold qualified for treatment as discontinued operations. The financial results of these facilities are segregated from our continuing operations and presented as discontinued operations in the Consolidated Statements of Income for all periods presented. The remaining liabilities of discontinued operations are not material to our financial position for the periods presented.
	Results of operations for the discontinued operations are as follows (in thousands):
		Year Ended December 31,
		2012		2011		2010
	Revenue	$	—	$	—	$	686
	Income before income tax provision	$	—	$	—	$	355
	Income tax provision	—		—		131
	Income from discontinued operations, net of taxes, before gain on sale of discontinued operations	—		—		224
	Gain on sale of discontinued operations, net of taxes of $1,015	—		—		1,729
	Income from discontinued operations, net of taxes	$	—	$	—	$	1,953

Equity_Incentive_Plans

Equity Incentive Plans	9 Months Ended																				12 Months Ended
	Sep. 30, 2013																				Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'																				'
Equity Incentive Plans	'																				'
	Equity Incentive Plans																				Equity Incentive Plans
	In order to attract and retain employees, non-employee directors, consultants, and other persons associated with us, we may grant qualified and nonqualified stock options, stock appreciation rights, restricted stock, restricted stock units ("RSUs"), performance shares and performance units under the LKQ Corporation 1998 Equity Incentive Plan (the "Equity Incentive Plan").																				In order to attract and retain employees, non-employee directors, consultants, and other persons associated with us, we may grant qualified and nonqualified stock options, stock appreciation rights, restricted stock, restricted stock units (“RSUs”), performance shares and performance units under the LKQ Corporation 1998 Equity Incentive Plan (the “Equity Incentive Plan”). In the first quarter of 2012, our Board of Directors approved an amendment to the Equity Incentive Plan, which was subsequently approved by our stockholders at our 2012 Annual Meeting in May 2012, to explicitly allow participation of our non-employee directors, to allow issuance of shares of our common stock to non-employee directors in lieu of cash compensation, to increase the number of shares available for issuance under the Equity Incentive Plan by 1,088,834, and to make certain updating amendments.
	We have granted RSUs, stock options, and restricted stock under the Equity Incentive Plan. These awards vest over periods of up to five years. Vesting of the awards is subject to a continued service condition. Each RSU converts into one share of LKQ common stock on the applicable vesting date. Shares of restricted stock may not be sold, pledged or otherwise transferred until they vest. Stock options expire ten years from the date they are granted. We expect to issue new shares of common stock to cover past and future equity grants.																				In connection with the amendment to the Equity Incentive Plan, our Board of Directors approved the termination of the Stock Option and Compensation Plan for Non-Employee Directors (the “Director Plan”), other than with respect to any options currently outstanding under the Director Plan. We had not issued options under the Director Plan since 2007. The increase in the number of shares available for issuance under the Equity Incentive Plan as approved by our Board of Directors in the first quarter of 2012 represented the remaining number of shares available for issuance under the Director Plan as of December 31, 2011.
	In March 2013, the Compensation Committee approved the cancellation of 671,400 unvested RSUs held by our executive officers and approved the issuance of 946,800 RSUs containing both a performance-based vesting condition and a time-based vesting condition.  Of the 946,800 RSUs, 671,400 were granted as a replacement of the canceled RSUs and include a performance-based condition that the Company reports positive diluted earnings per share, subject to certain adjustments, during the year ending December 31, 2013.  In addition, these RSUs retain the same remaining time-based vesting conditions as the canceled RSUs (vesting in equal tranches each six months beginning July 2013 through either January 2016 or January 2017).  The remaining 275,400 RSUs granted in March 2013 include a performance-based condition that the Company reports positive diluted earnings per share, subject to certain adjustments, during any fiscal year period within five years following the grant date.  In addition, these RSUs include a time-based vesting condition, vesting in equal tranches each six months beginning July 2013 through January 2016. In all cases, both conditions must be met before any RSUs vest. If the applicable performance-based condition of an RSU is not met, the RSU is forfeited.  If and when the performance-based condition is met, all applicable RSUs that had previously met the time-based vesting condition will vest immediately and the remaining RSUs will vest according to the remaining schedule of the time-based condition.																				The total number of shares approved by our stockholders for issuance under the Equity Incentive Plan is 69.9 million shares, subject to antidilution and other adjustment provisions, which includes the 1.1 million shares authorized in 2012 and 12.8 million shares authorized in 2011. Of the shares approved by our stockholders for issuance under the Equity Incentive Plan, 14.6 million shares remained available for issuance as of December 31, 2012.
	A summary of transactions in our stock-based compensation plans for the nine months ended September 30, 2013 is as follows:																				Most of our RSUs, stock options, and restricted stock vest over a period of five years. Vesting of the awards is subject to a continued service condition. Each RSU converts into one share of LKQ common stock on the applicable vesting date. Shares of restricted stock may not be sold, pledged or otherwise transferred until they vest. Stock options expire ten years from the date they are granted. We expect to issue new shares of common stock to cover past and future equity grants.
																					As a result of the stock split in September 2012 as discussed in Note 1, "Business," the following adjustments were made in accordance with the nondiscretionary antidilution provisions of our 1998 Equity Incentive Plan:  the number of shares available for issuance doubled; the number of outstanding RSUs, shares subject to stock options and shares of restricted stock all also doubled; and the exercise prices of outstanding stock options were reduced to 50% of the exercise prices prior to the stock split.
																					A summary of transactions in our stock-based compensation plans is as follows:
		Shares			RSUs							Stock Options					Restricted Stock
		Available For
		Grant			Number			Weighted-				Number			Weighted-		Number		Weighted-			Shares			RSUs							Stock Options							Restricted Stock
					Outstanding			Average				Outstanding			Average		Outstanding		Average			Available For
								Grant Date							Exercise				Grant Date			Grant			Number			Weighted				Number			Weighted				Number		Weighted
								Fair Value							Price				Fair Value						Outstanding			Average				Outstanding			Average				Outstanding		Average
	Balance, January 1, 2013	14,643,932			2,351,362			$	14.02			9,355,070			$	6.9	116,000		$	9.47								Grant Date							Exercise						Grant Date
																												Fair Value							Price						Fair Value
	Granted	(924,312	)		924,312			22.18				—			—		—		—		Balance, January 1, 2010	7,285,606			—			$	—			18,658,814			$	4.41			404,000		$	9.5
	Exercised	—			—			—				(2,143,544	)		6.37		—		—		Granted	(3,423,066	)		—			—				3,423,066			9.98				—		—
	Vested	—			(593,671	)		15.04				—			—		(86,000	)	9.54		Exercised	—			—			—				(5,516,310	)		2.53				—		—
	Canceled	177,174			(97,254	)		16.14				(79,920	)		8.8		—		—		Vested	—			—			—				—			—				(96,000	)	9.51
	Balance, September 30, 2013	13,896,794			2,584,749			$	16.63			7,131,606			$	7.04	30,000		$	9.3	Cancelled	417,640			—			—				(417,640	)		8.06				—		—
	The RSUs containing a performance-based vesting condition that were granted in replacement of canceled RSUs were accounted for as a modification of the original awards, and therefore are not reflected as grants or cancellations in the table above.																				Balance, December 31, 2010	4,280,180			—			$	—			16,147,930			$	6.14			308,000		$	9.5
	The fair value of RSUs is based on the market price of LKQ stock on the grant date. When estimating forfeitures, we consider voluntary and involuntary termination behavior as well as analysis of historical forfeitures. For valuing RSUs granted during the nine month period ended September 30, 2013, we used forfeiture rates of 10% for grants to employees and 0% for grants to non-employee directors and executive officers. The fair value of RSUs that vested during the nine months ended September 30, 2013 was approximately $14.3 million.
	For the 2013 RSU grants that contain both a performance-based vesting condition and a time-based vesting condition, we recognize compensation expense under the accelerated attribution method, pursuant to which expense is recognized over the requisite service period for each separate vesting tranche of the award. For the RSUs that were canceled and replaced, the fair values of the RSUs immediately before and after the modification were the same. As a result, there was no charge recorded in the nine months ended September 30, 2013 and the expense for these RSUs was continued at the grant date fair value. During the three and nine months ended September 30, 2013, we recognized $2.3 million and $6.0 million, respectively, of stock-based compensation expense related to the RSUs containing a performance-based vesting condition. For all other awards, which are subject to only a time-based vesting condition, we recognize compensation expense on a straight-line basis over the requisite service period of the entire award.																				Granted	(1,643,348	)		1,643,348			11.8				—			—				—		—
	The components of pre-tax stock-based compensation expense are as follows (in thousands):
																					Shares Issued for Director Compensation	(31,166	)		—			—				—			—				—		—
		Three Months Ended								Nine Months Ended											Exercised	—			—			—				(2,768,038	)		4.31				—		—
		September 30,								September 30,
		2013				2012				2013				2012							Vested	—			(164,862	)		11.84				—			—				(96,000	)	9.51
	RSUs	$	4,559			$	2,048			$	12,674			$	6,131
																					Cancelled	346,704			(44,904	)		11.77				(301,800	)		8.44				—		—
	Stock options	1,124				1,720				3,457				5,162
																					Additional Shares Authorized	12,800,000			—			—				—			—				—		—
	Restricted stock	47				230				161				683
																					Balance, December 31, 2011	15,752,370			1,433,582			$	11.8			13,078,092			$	6.47			212,000		$	9.49
	Total stock-based compensation expense	$	5,730			$	3,998			$	16,292			$	11,976
																					Granted	(1,504,410	)		1,504,410			15.86				—			—				—		—
	The following table sets forth the classification of total stock-based compensation expense included in our Unaudited Consolidated Condensed Statements of Income (in thousands):
																					Exercised	—			—			—				(3,446,472	)		5.13				—		—
		Three Months Ended								Nine Months Ended											Vested	—			(467,208	)		13.09				—			—				(96,000	)	9.51
		September 30,								September 30,
		2013				2012				2013				2012							Cancelled	395,972			(119,422	)		14.03				(276,550	)		8.3				—		—
	Cost of goods sold	$	98			$	99			$	294			$	298
																					Balance, December 31, 2012	14,643,932			2,351,362			$	14.02			9,355,070			$	6.9			116,000		$	9.47
	Facility and warehouse expenses	687				648				2,058				1,951
																					In January 2013, our Board of Directors granted 594,700 RSUs to employees. The annual award to executive officers has not been granted as of March 1, 2013.
	Selling, general and administrative expenses	4,945				3,251				13,940				9,727							The following table summarizes information about expected to vest RSUs and restricted stock, and vested and expected to vest options at December 31, 2012:
		5,730				3,998				16,292				11,976
																						Shares			Weighted		Intrinsic				Weighted
	Income tax benefit	(2,235		)		(1,559		)		(6,354		)		(4,671		)									Average		Value				Average
	Total stock-based compensation expense, net of tax	$	3,495			$	2,439			$	9,938			$	7,305										Remaining		(in thousands)				Exercise
																									Contractual						Price
	We have not capitalized any stock-based compensation costs during either of the nine month periods ended September 30, 2013 or 2012.																								Life (Yrs)
	As of September 30, 2013, unrecognized compensation expense related to unvested RSUs, stock options and restricted stock is expected to be recognized as follows (in thousands):																				RSUs	2,319,877			3.5		$	48,949			$	—
																					Stock options	9,079,684			5		129,421				6.85
		RSUs				Stock				Restricted				Total
						Options				Stock											Restricted stock	116,000			0.6		2,448				—
	Remainder of 2013	$	4,459			$	1,123			$	47			$	5,629
																					The aggregate intrinsic value represents the total pre-tax intrinsic value based on our closing stock price of $21.10 on December 31, 2012. This amount changes based upon the fair market value of our common stock. The aggregate intrinsic value of total outstanding RSUs and restricted stock was $49.6 million and $2.4 million at December 31, 2012, respectively.
	2014	12,829				3,007				139				15,975							The following table summarizes information about outstanding and exercisable stock options at December 31, 2012:
	2015	9,421				75				—				9,496
																							Outstanding									Exercisable
	2016	5,673				—				—				5,673							Range of Exercise Prices		Shares			Weighted		Weighted				Shares			Weighted		Weighted
																										Average		Average							Average		Average
2017	2,575				—				—				2,575							Remaining						Exercise			Remaining	Exercise
																				Contractual						Price			Contractual	Price
2018	96				—				—				96							Life (Yrs)									Life (Yrs)
																				$1.50 - $3.50		1,357,538			1.6		$	2.11			1,357,538			1.6		$	2.11
Total unrecognized compensation expense	$	35,053			$	4,205			$	186			$	39,444
																				$3.51 - $5.50		1,676,760			3.5		4.85				1,676,760			3.5		4.85
Our stock-based compensation expense for the remainder of 2013 related to the RSUs containing a performance-based vesting condition is expected to be $2.3 million.																				$5.51 - $7.50		2,193,800			6		5.98				1,448,330			6		5.98
																				$7.51 - $9.50		215,666			6.1		9.21				160,733			5.8		9.25
																				$9.51 +		3,911,306			6.3		9.84				2,253,124			6		9.78
																						9,355,070			5		$	6.9			6,896,485			4.5		$	6.26
																				The aggregate intrinsic value of outstanding and exercisable stock options at December 31, 2012 was $132.8 million and $102.3 million, respectively.
																				The fair value of RSUs and restricted stock is based on the market price of LKQ stock on the date of issuance. When estimating forfeitures, we consider voluntary and involuntary termination behavior as well as analysis of historical forfeitures. For valuing RSUs, we used forfeiture rates of 10% for grants to employees and 0% for grants to non-employee directors and executive officers.
																				The fair value of RSUs that vested during the years ended December 31, 2012 and 2011 was $7.8 million and $2.2 million, respectively. There were no RSU vestings during the year ended December 31, 2010 as we did not issue RSUs prior to 2011. The fair value of restricted stock that vested during the years ended December 31, 2012, 2011 and 2010 was approximately $1.6 million, $1.1 million and $1.0 million, respectively.
																				We did not grant any stock options during the years ended December 31, 2012 and 2011. For the stock options granted during 2010, the fair value was estimated using the Black-Scholes option-pricing model. The following table summarizes the weighted average assumptions used to compute the fair value of stock option grants:
																					Year Ended
																					December 31,
																					2010
																				Expected life (in years)	6.4
																				Risk-free interest rate	3.17		%
																				Volatility	43.9		%
																				Dividend yield	0		%
																				Weighted average fair value of options granted	$	4.77
																				Expected life—The expected life represents the period that our stock-based awards are expected to be outstanding. At the last grant date (in 2010), we used the simplified method in developing an estimate of expected life of stock options because we lacked sufficient data to calculate an expected life based on historical experience. Our first annual option grant with a full five year vesting period since we became a public company was on January 13, 2006, and these awards became fully vested in January 2011. Additionally, our options have a ten year life while our existence as a public company was just over six years when the 2010 grant was made. Therefore, we used the simplified expected term method as permitted by the Securities and Exchange Commission Staff Accounting Bulletin No. 107, as amended by Staff Accounting Bulletin No. 110.
																				Risk-free interest rate—We base the risk-free interest rate used in the Black-Scholes option-pricing model on the implied yield available on U.S. Treasury zero-coupon issues with the same or substantially equivalent remaining term.
																				Expected volatility—We use the trading history and historical volatility of our common stock in determining an estimated volatility factor for the Black-Scholes option-pricing model.
																				Expected dividend yield—We have not declared and have no plans to declare dividends and have therefore used a zero value for the expected dividend yield in the Black-Scholes option-pricing model.
																				Estimated forfeitures—When estimating forfeitures, we consider voluntary and involuntary termination behavior as well as analysis of historical forfeitures. A forfeiture rate of 9% was used for valuing employee option grants, while a forfeiture rate of 0% was used for valuing non-employee director and executive officer option grants.
																				The total grant-date fair value of options that vested during the years ended December 31, 2012, 2011 and 2010 was $7.2 million, $8.6 million and $7.7 million respectively. The total intrinsic value (market value of stock less option exercise price) of stock options exercised was $45.3 million, $24.8 million and $43.2 million during the years ended December 31, 2012, 2011 and 2010, respectively.
																				We recognize compensation expense on a straight-line basis over the requisite service period of the award. The components of pre-tax stock-based compensation expense are as follows (in thousands):
																					Year Ended December 31,
																					2012				2011				2010
																				RSUs	$	8,411			$	3,666			$	—
																				Stock options	6,310				8,129				8,771
																				Restricted stock	913				913				913
																				Stock issued to non-employee directors	—				399				290
																				Total stock-based compensation expense	$	15,634			$	13,107			$	9,974
																				The following table sets forth the classification of total stock-based compensation expense included in our Consolidated Statements of Income (in thousands):
																					Year Ended December 31,
																					2012				2011				2010
																				Cost of goods sold	$	376			$	327			$	278
																				Facility and warehouse expenses	2,465				2,391				2,069
																				Selling, general and administrative expenses	12,793				10,389				7,627
																					15,634				13,107				9,974
																				Income tax benefit	(6,097		)		(5,059		)		(3,920		)
																				Total stock-based compensation expense, net of tax	$	9,537			$	8,048			$	6,054
																				We have not capitalized any stock-based compensation costs during the years ended December 31, 2012, 2011 or 2010.
																				As of December 31, 2012, unrecognized compensation expense related to unvested RSUs, stock options and restricted stock is expected to be recognized as follows (in thousands):
																					RSUs				Stock				Restricted				Total
																									Options				Stock
																				2013	$	8,254			$	4,580			$	208			$	13,042
																				2014	7,897				3,007				139				11,043
																				2015	7,861				75				—				7,936
																				2016	4,394				—				—				4,394
																				2017	141				—				—				141
																				Total unrecognized compensation expense	$	28,547			$	7,662			$	347			$	36,556

LongTerm_Obligations

Long-Term Obligations	9 Months Ended							12 Months Ended
	Sep. 30, 2013							Dec. 31, 2012
Debt Disclosure [Abstract]	'							'
Long-Term Obligations	'							'
	Long-Term Obligations							Long-Term Obligations
	Long-Term Obligations consist of the following (in thousands):							Long-Term Obligations consist of the following (in thousands):
		September 30,			December 31,				December 31,
		2013			2012				2012			2011
	Senior secured credit agreement:							Senior secured credit agreement:
	Term loans payable	$	444,375		$	420,625		Term loans payable	$	420,625		$	240,625
	Revolving credit facility	199,831			553,964			Revolving credit facility	553,964			660,730
	Senior notes	600,000			—			Receivables securitization facility	80,000			—
	Receivables securitization facility	10,000			80,000			Notes payable through October 2018 at weighted average interest rates of 1.7% and 2.0%, respectively	42,398			38,338
	Notes payable through October 2018 at weighted average interest rates of 1.8% and 1.7%, respectively	38,941			42,398			Other long-term debt at weighted average interest rates of 3.3% and 3.2%, respectively	21,491			16,383
	Other long-term debt at weighted average interest rates of 3.5% and 3.3%, respectively	18,908			21,491				1,118,478			956,076
		1,312,055			1,118,478			Less current maturities	(71,716		)	(29,524		)
									$	1,046,762		$	926,552
	Less current maturities	(61,123		)	(71,716		)
		$	1,250,932		$	1,046,762
								The scheduled maturities of long-term obligations outstanding at December 31, 2012 are as follows (in thousands):
	Senior Secured Credit Agreement
	On May 3, 2013, we entered into an amended and restated credit agreement (the "Credit Agreement") with the several lenders from time to time party thereto, Wells Fargo Bank, National Association, as administrative agent, Bank of America N.A., as syndication agent, The Bank of Tokyo-Mitsubishi UFJ, LTD and RBS Citizens, N.A., as co-documentation agents, and Wells Fargo Securities, LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated, The Bank of Tokyo-Mitsubishi UFJ, LTD and RBS Citizens, N.A., as joint lead arrangers and joint bookrunners. The Credit Agreement retains many of the terms of the Company's amended and restated credit agreement dated September 30, 2011 (the "Original Credit Agreement") while also modifying certain terms to (1) extend the maturity date by approximately two years to May 3, 2018; (2) increase the total availability under the Credit Agreement from $1.4 billion to $1.8 billion (composed of $1.2 billion in the revolving credit facility's multicurrency component, $150 million in the revolving credit facility's US dollar component, and $450 million of term loans; (3) increase the amount of letters of credit that may be issued under the revolving credit facility to $150 million from $125 million; (4) raise the amount of swing line loans available under the revolving credit facility to $50 million from $25 million; (5) increase the maximum net leverage ratio covenant; (6) add certain subsidiaries as additional borrowers under the revolving credit facility; and (7) make other immaterial or clarifying modifications and amendments to the terms of the Original Credit Agreement. The Credit Agreement allows the Company to increase the amount of the revolving credit facility or obtain incremental term loans up to the greater of $400 million or the amount that may be borrowed while maintaining a senior secured leverage ratio of less than or equal to 2.50 to 1.00, subject to the agreement of the lenders. The proceeds of the Credit Agreement were used to repay amounts outstanding under the Original Credit Agreement, to pay fees related to the amendment and restatement, and for general corporate purposes.
	Amounts under the revolving credit facility are due and payable upon maturity of the Credit Agreement on May 3, 2018. Amounts under the initial and additional term borrowings are due and payable in quarterly installments equal to 1.25% of the original principal amount beginning on September 30, 2013, with the remaining balance due and payable on the maturity date of the Credit Agreement. We are required to prepay the term loan by amounts equal to proceeds from the sale or disposition of certain assets if the proceeds are not reinvested within twelve months. We also have the option to prepay outstanding amounts under the Credit Agreement without penalty.							2013	$	71,716
	The Credit Agreement contains customary representations and warranties, and contains customary covenants that provide limitations and conditions on our ability to enter into certain transactions. The Credit Agreement also contains financial and affirmative covenants under which we (i) may not exceed a maximum net leverage ratio of 3.50 to 1.00 (an increase from 3.00 to 1.00 under the Original Credit Agreement), except in connection with permitted acquisitions with aggregate consideration in excess of $200 million during any period of four consecutive fiscal quarters in which case the maximum net leverage ratio may increase to 4.00 to 1.00 for the subsequent four fiscal quarters (an increase from 3.50 to 1.00 under the Original Credit Agreement) and (ii) are required to maintain a minimum interest coverage ratio of 3.00 to 1.00. We were in compliance with all restrictive covenants under the Credit Agreement and the Original Credit Agreement as of September 30, 2013 and December 31, 2012, respectively.
	Borrowings under the Credit Agreement bear interest at variable rates, which depend on the currency and duration of the borrowing elected, plus an applicable margin. The applicable margin is subject to change in increments of 0.25% depending on our net leverage ratio. Interest payments are due on the last day of the selected interest period or quarterly in arrears depending on the type of borrowing. Including the effect of the interest rate swap agreements described in Note 5, "Derivative Instruments and Hedging Activities," the weighted average interest rates on borrowings outstanding against the Credit Agreement at September 30, 2013 and December 31, 2012 were 3.08% and 2.85%, respectively. We also pay a commitment fee based on the average daily unused amount of the revolving credit facility. The commitment fee is subject to change in increments of 0.05% depending on our net leverage ratio. In addition, we pay a participation commission on outstanding letters of credit at an applicable rate based on our net leverage ratio, as well as a fronting fee of 0.125% to the issuing bank, which are due quarterly in arrears. Borrowings under the Credit Agreement totaled $644.2 million and $974.6 million at September 30, 2013 and December 31, 2012, respectively, of which $22.5 million and $31.9 million were classified as current maturities, respectively. As of September 30, 2013, there were letters of credit outstanding in the aggregate amount of $53.2 million. The amounts available under the revolving credit facility are reduced by the amounts outstanding under letters of credit, and thus availability on the revolving credit facility at September 30, 2013 was $1.1 billion.							2014	54,611
	Related to the execution of the Credit Agreement, we incurred $7.2 million of fees, of which $6.1 million were capitalized within Other Assets on our Unaudited Consolidated Condensed Balance Sheet and are amortized over the term of the agreement. The remaining $1.1 million of fees were expensed, together with $1.7 million of capitalized debt issuance costs related to the Original Credit Agreement, as a loss on debt extinguishment in our Unaudited Consolidated Condensed Statements of Income for the nine months ended September 30, 2013.
	Senior Notes							2015	138,323
	On May 9, 2013, we completed an offering of $600 million aggregate principal amount of senior notes due May 15, 2023 (the "Notes") in a private placement conducted pursuant to Rule 144A and Regulation S under the Securities Act of 1933. The proceeds from the offering were used to repay revolver borrowings under our Credit Agreement, including amounts borrowed to finance our acquisition of Sator in May 2013 as discussed further in Note 9, "Business Combinations," to pay related fees and expenses, and for general corporate purposes. The Notes are governed by the Indenture dated as of May 9, 2013 among LKQ Corporation, certain of our subsidiaries (the "Guarantors") and U.S. Bank National Association, as trustee.
	The Notes bear interest at a rate of 4.75% per year from the date of original issuance or from the most recent payment date on which interest has been paid or provided for. Interest on the Notes is payable in arrears on May 15 and November 15 of each year, beginning on November 15, 2013. The Notes are fully and unconditionally guaranteed by the Guarantors.							2016	847,759
	The Notes and the guarantees will be our and each Guarantor's senior unsecured obligations and will be subordinated to all of the Guarantors' existing and future secured debt to the extent of the assets securing that secured debt. In addition, the Notes will be effectively subordinated to all of the liabilities of our subsidiaries that are not guaranteeing the Notes to the extent of the assets of those subsidiaries.
	The Notes will be redeemable, in whole or in part, at any time on or after May 15, 2018 on the redemption dates and at the respective redemption prices specified in the Indenture. In addition, we may redeem up to 35% of the notes before May 15, 2016 with the net cash proceeds from certain equity offerings. We may also redeem some or all of the notes before May 15, 2018 at a redemption price of 100% of the principal amount thereof plus accrued and unpaid interest, if any, to the redemption date, plus a "make whole" premium. We may be required to make an offer to purchase the notes upon the sale of certain assets, subject to certain exceptions, and upon a change of control.							2017	848
	In connection with the sale of the Notes, the Company entered into a Registration Rights Agreement dated as of May 9, 2013 (the "Registration Rights Agreement") with the Guarantors and the representative of the initial purchasers of the Notes identified therein. Under the Registration Rights Agreement, the Company and the Guarantors have agreed to (i) file an exchange offer registration statement to exchange the Notes for a new issue of debt securities registered under the Securities Act of 1933, with terms substantially identical to those of the Notes (except that the exchange notes will not contain terms with respect to additional interest, registration rights, or certain transfer restrictions); (ii) use their commercially reasonable efforts to consummate the exchange offer within 365 days after the issue date of the Notes; and (iii) in certain circumstances, file a shelf registration statement for the resale of the Notes. If the Company and the Guarantors fail to consummate the exchange offer within 365 days of the issue date of the Notes or otherwise fail to satisfy their registration obligations under the Registration Rights Agreement, then the annual interest rate on the Notes will increase by 0.25% per annum and by an additional 0.25% per annum for each subsequent 90-day period during which the registration default continues, up to a maximum additional interest rate of 1.0% per annum.
	Fees incurred related to the offering of the Notes totaling $9.7 million were capitalized within Other Assets on our Unaudited Consolidated Condensed Balance Sheet and are amortized over the term of the Notes.							Thereafter	5,221
	Receivables Securitization Facility
	On September 28, 2012, we entered into a three year receivables securitization facility with The Bank of Tokyo-Mitsubishi UFJ, Ltd. ("BTMU"), as Administrative Agent. Under the facility, LKQ sells an ownership interest in certain receivables, related collections and security interests to BTMU for the benefit of conduit investors and/or financial institutions for up to $80 million in cash proceeds. Upon payment of the receivables by customers, rather than remitting to BTMU the amounts collected, LKQ retains such collections as proceeds for the sale of new receivables generated by certain of the ongoing operations of the Company.								$	1,118,478
	The sale of the ownership interest in the receivables is accounted for as a secured borrowing in our Unaudited Consolidated Condensed Balance Sheets, under which the receivables included in the program collateralize the amounts invested by BTMU, the conduit investors and/or financial institutions. The receivables are held by LKQ Receivables Finance Company, LLC ("LRFC"), a wholly owned bankruptcy-remote special purpose subsidiary of LKQ, and therefore, the receivables are available first to satisfy the creditors of LRFC, including the investors. As of September 30, 2013 and December 31, 2012, $110.3 million and $116.9 million, respectively, of net receivables were collateral for the investment under the receivables facility.
	Under the receivables facility, we pay variable interest rates plus a margin on the outstanding amounts invested by the Purchasers. The variable rates are based on (i) commercial paper rates, (ii) the London InterBank Offered Rate ("LIBOR") plus 1.25%, or (iii) base rates, and are payable monthly in arrears. Commercial paper rates will be the applicable variable rate unless conduit investors are not available to invest in the receivables at commercial paper rates. In such case, financial institutions will invest at the LIBOR rate plus 1.25% or at base rates. We also pay a commitment fee on the excess of the investment maximum over the average daily outstanding investment, payable monthly in arrears. As of September 30, 2013 and December 31, 2012, the interest rate under the receivables facility was based on commercial paper rates and was 1.01% and 1.05%, respectively. The outstanding balances of $10.0 million and $80.0 million as of September 30, 2013 and December 31, 2012, respectively, were classified as long-term on the Unaudited Consolidated Condensed Balance Sheets because we have the ability and intent to refinance these borrowings on a long-term basis.							Senior Secured Credit Agreement
								On March 25, 2011, we entered into a credit agreement with the several lenders from time to time party thereto, JPMorgan Chase Bank, N.A., as administrative agent, Bank of America N.A., as syndication agent, RBS Citizens, N.A. and Wells Fargo Bank, National Association, as co-documentation agents, and J.P. Morgan Securities LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated, RBS Citizens, N.A. and Wells Fargo Securities, LLC, as joint lead arrangers and joint bookrunners, which was amended on September 30, 2011 (as amended, the “Credit Agreement”). The Credit Agreement provides for borrowings up to $1.4 billion, consisting of (1) a $950 million revolving credit facility (the “Revolving Credit Facility”), (2) a $250 million term loan facility (the “Term Loan Facility”) and (3) an additional term loan facility of up to $200 million (“New Term Loan Facility”). Under the Revolving Credit Facility, we are permitted to draw up to the U.S. dollar equivalent of $500 million in Canadian dollars, pounds sterling, euros, and other agreed-upon currencies. The Credit Agreement also provides for (a) the issuance of up to $125 million of letters of credit under the Revolving Credit Facility in agreed-upon currencies, (b) the issuance of up to $25 million of swing line loans under the Revolving Credit Facility, and (c) the opportunity to increase the amount of the Revolving Credit Facility or obtain incremental term loans up to $400 million. Outstanding letters of credit and swing line loans are taken into account when determining availability under the Revolving Credit Facility. In January 2012, we borrowed the full $200 million available under the New Term Loan Facility, which we used to pay down a portion of our Revolving Credit Facility borrowings.
								The obligations under the Credit Agreement are unconditionally guaranteed by our direct and indirect domestic subsidiaries and certain foreign subsidiaries. Obligations under the Credit Agreement, including the related guarantees, are collateralized by a security interest and lien on a majority of the existing and future personal property of, and a security interest in 100% of our equity interest in, each of our existing and future direct and indirect domestic and foreign subsidiaries, provided that if a pledge of 100% of a foreign subsidiary’s voting equity interests gives rise to an adverse tax consequence, such pledge shall be limited to 65% of the voting equity interest of the first tier foreign subsidiary. In the event that we obtain and maintain certain ratings from S&P (BBB- or better, with stable or better outlook) or Moody’s (Baa3 or better, with stable or better outlook), and upon our request, the security interests in and liens on the collateral described above shall be released. As of December 31, 2012, our our credit ratings from Moody’s and S&P were Ba2 and BB+, respectively, with a stable outlook.
								Amounts under the Revolving Credit Facility are due and payable upon maturity of the Credit Agreement in March 2016. Amounts under the Term Loan Facility are due and payable in quarterly installments, with the annual payments equal to 5% of the original principal amount in the first and second years, 10% of the original principal amount in the third and fourth years, and 15% of the original principal amount in the fifth year. The remaining balance under the Term Loan Facility is due and payable on the maturity date of the Credit Agreement. Amounts under the New Term Loan Facility are due and payable in quarterly installments beginning after March 31, 2012, with the annual payments equal to 5% of the original principal amount in the first and second years and 10% of the original principal amount in the third and fourth years. The remaining balance under the New Term Loan Facility is due and payable on the maturity date of the Credit Agreement. We are required to prepay the Term Loan Facility and the New Term Loan Facility by amounts equal to proceeds from the sale or disposition of certain assets if the proceeds are not reinvested within twelve months. We also have the option to prepay outstanding amounts under the Credit Agreement without penalty.
								The Credit Agreement contains customary representations and warranties, and contains customary covenants that provide limitations and conditions on our ability to, among other things (i) incur indebtedness, except for certain exclusions such as borrowings on a permitted receivables facility up to $100 million, (ii) incur liens, (iii) enter into any merger, consolidation, amalgamation, or otherwise liquidate or dissolve the Company, (iv) dispose of certain property, (v) make dividend payments, repurchase our stock, or enter into derivative contracts indexed to the value of our common stock, (vi) make certain investments, including the acquisition of assets constituting a business or the stock of a business designated as a non-guarantor, (vii) make optional prepayments of subordinated debt, (viii) enter into sale-leaseback transactions, (ix) issue preferred stock, redeemable stock, convertible stock or other similar equity instruments, and (x) enter into hedge agreements for speculative purposes or otherwise not in the ordinary course of business. The Credit Agreement also contains financial and affirmative covenants under which we (i) may not exceed a maximum net leverage ratio of 3.00 to 1.00, except in connection with permitted acquisitions with aggregate consideration in excess of $200 million during any period of four consecutive fiscal quarters in which case the maximum net leverage ratio may increase to 3.50 to 1.00 for the subsequent four fiscal quarters and (ii) are required to maintain a minimum interest coverage ratio of 3.00 to 1.00. We were in compliance with all restrictive covenants under the Credit Agreement as of December 31, 2012 and 2011.
								The Credit Agreement contains events of default that include (i) our failure to pay principal when due or interest, fees, or other amounts after grace periods, (ii) our material breach of any representation or warranty, (iii) covenant defaults, (iv) cross defaults to certain other indebtedness, (v) bankruptcy, (vi) certain ERISA events, (vii) material judgments, (viii) change of control, and (ix) failure of subordinated indebtedness to be validly and sufficiently subordinated.
								Borrowings under the Credit Agreement bear interest at variable rates, which depend on the currency and duration of the borrowing elected, plus an applicable margin. The applicable margin is subject to change in increments of 0.25% depending on our total leverage ratio. Interest payments are due on the last day of the selected interest period or quarterly in arrears depending on the type of borrowing. Including the effect of the interest rate swap agreements described in Note 6, "Derivative Instruments and Hedging Activities," the weighted average interest rates on borrowings outstanding against the Credit Agreement at December 31, 2012 and 2011 were 2.85% and 2.59%, respectively. We also pay a commitment fee based on the average daily unused amount of the Revolving Credit Facility. The commitment fee is subject to change in increments of 0.05% depending on our total leverage ratio. In addition, we pay a participation commission on outstanding letters of credit at an applicable rate based on our total leverage ratio, as well as a fronting fee of 0.125% to the issuing bank, which are due quarterly in arrears. Borrowings under the Credit Agreement totaled $974.6 million and $901.4 million at December 31, 2012 and 2011, respectively, of which $31.9 million and $12.5 million were classified as current maturities, respectively. As of December 31, 2012, there were $39.9 million of outstanding letters of credit. The amounts available under the Revolving Credit Facility are reduced by the amounts outstanding under letters of credit, and thus availability on the Revolving Credit Facility at December 31, 2012 was $356.1 million.
								In 2011, we incurred a loss on debt extinguishment of $5.3 million related to the write off of the unamortized balance of capitalized debt issuance costs under our previous debt agreement. The amount of the write off excludes debt issuance cost amortization, which is recorded as a component of interest expense. We incurred $11.0 million in fees related to the execution of the Credit Agreement during 2011. These fees were capitalized within Other Assets on our Consolidated Balance Sheets and are amortized over the term of the agreement.
								Receivables Securitization Facility
								On September 28, 2012, we entered into a three year receivables securitization facility (the "Receivables Facility") pursuant to (i) a Receivables Sale Agreement (the "RSA"), among certain subsidiaries of LKQ, as "Originators," and LKQ Receivables Finance Company, LLC ("LRFC"), a wholly owned, bankruptcy-remote special purpose subsidiary of LKQ, as Buyer and (ii) a Receivables Purchase Agreement (the "RPA") among LRFC, as Seller, LKQ, as Servicer, certain conduit investors and The Bank of Tokyo-Mitsubishi UFJ, Ltd. ("BTMU"), as Administrative Agent, Managing Agent and Financial Institution.
								Under the terms of the RSA, the Originators sell at a discount or contribute certain of their trade accounts receivable, related collections and security interests (the "Receivables") to LRFC on a revolving basis. Under the terms of the RPA, LRFC sells to BTMU for the benefit of the conduit investors and/or financial institutions (together with BTMU, the "Purchasers") an undivided ownership interest in the Receivables for up to $80 million in cash proceeds, subject to additional Incremental Purchases, as defined in the RPA, which may increase the maximum amount of aggregate investments made by the Purchasers. The proceeds from the Purchasers' initial investment of $77.3 million were used to finance LRFC's initial purchase from the Originators, and the proceeds from LRFC's initial purchase from the Originators were used to repay outstanding borrowings under the Revolving Credit Facility. Upon payment of the Receivables by customers, rather than remitting to BTMU the amounts collected, LRFC has reinvested and will reinvest such Receivables payments to purchase additional Receivables from the Originators, subject to the Originators generating sufficient eligible Receivables to sell to LRFC in replacement of collected balances. LRFC may also use the proceeds from a subordinated loan made by the Originators to LRFC to finance purchases of the Receivables from the Originators. Because the Receivables are held by LRFC, a separate bankruptcy-remote corporate entity, the Receivables will be available first to satisfy the creditors of LRFC, including the Purchasers. At the end of the initial three year term, the financial institutions may elect to renew their commitments under the RPA.
								The sale of the ownership interest in the Receivables is accounted for as a secured borrowing on our Consolidated Balance Sheets, under which the Receivables collateralize the amounts invested by the Purchasers. As of December 31, 2012, $116.9 million of net Receivables were collateral for the investment under the Receivables Facility. Under the RPA, we pay variable interest rates plus a margin on the outstanding amounts invested by the Purchasers. The variable rates are based on (i) commercial paper rates, (ii) LIBOR rates plus 1.25%, or (iii) base rates, and are payable monthly in arrears. We also pay a commitment fee on the excess of the investment maximum over the average daily outstanding investment, payable monthly in arrears. As of December 31, 2012, the interest rate under the Receivables Facility was 1.05%. During 2012, we also incurred $0.3 million of arrangement fees and other related transaction costs which were capitalized within Other Assets on the Consolidated Balance Sheets and are amortized over the term of the facility. As of December 31, 2012, the outstanding balance of $80.0 million was classified as long-term on the Consolidated Balance Sheets because we have the ability and intent to refinance these borrowings on a long-term basis.
								The RPA contains customary representations and warranties and customary covenants, including covenants to preserve the bankruptcy remote status of LRFC. The RPA also contains customary default and termination provisions that provide for acceleration of amounts owed under the RPA upon the occurrence of certain specified events with respect to LRFC, the Originators or LKQ, including, but not limited to, (i) LRFC's failure to pay interest and other amounts due, (ii) failure by LRFC, the Originators, or LKQ to pay certain indebtedness, (iii) certain insolvency events with respect to LRFC, the Originators or LKQ, (iv) certain judgments entered against LRFC, the Originators or LKQ, (v) certain liens filed with respect to the assets of LRFC or the Originators, and (vi) breach of certain financial ratios designed to capture events negatively affecting the overall credit quality of the Receivables securing amounts invested by the Purchasers.
								Other Long-Term Obligations
								As part of the consideration for business acquisitions completed during 2012, 2011 and 2010, we issued promissory notes totaling approximately $16.0 million, $34.2 million and $5.5 million, respectively. The weighted average interest rates on the notes outstanding at December 31, 2012 and 2011 were 1.7% and 2.0%, respectively.

Derivative_Instruments_and_Hed

Derivative Instruments and Hedging Activities	9 Months Ended															12 Months Ended
	Sep. 30, 2013															Dec. 31, 2012
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'															'
Derivative Instruments and Hedging Activities	'															'
	Derivative Instruments and Hedging Activities															Derivative Instruments and Hedging Activities
	We are exposed to market risks, including the effect of changes in interest rates, foreign currency exchange rates and commodity prices. Under our current policies, we use derivatives to manage our exposure to variable interest rates on our senior secured debt, changing foreign exchange rates for certain foreign currency denominated transactions, and changes in metals prices. We do not hold or issue derivatives for trading purposes.															We are exposed to market risks, including the effect of changes in interest rates, foreign currency exchange rates and commodity prices. Under our current policies, we use derivatives to manage our exposure to variable interest rates on our senior secured debt. For certain of our operations, we also use short-term foreign currency and commodity forward contracts to manage our exposure to variability in foreign currency denominated transactions and changing metals prices, respectively. We do not hold or issue derivatives for trading purposes.
	Cash Flow Hedges															Interest Rate Swaps
	At September 30, 2013, we had interest rate swap agreements in place to hedge a portion of the variable interest rate risk on our variable rate borrowings under our Credit Agreement, with the objective of minimizing the impact of interest rate fluctuations and stabilizing cash flows. Under the terms of the interest rate swap agreements, we pay the fixed interest rate and receive payment at a variable rate of interest based on LIBOR or the Canadian Dealer Offered Rate ("CDOR") for the respective currency of each interest rate swap agreement's notional amount. The effective portion of changes in the fair value of the interest rate swap agreements is recorded in Accumulated Other Comprehensive Income and is reclassified to interest expense when the underlying interest payment has an impact on earnings. The ineffective portion of changes in the fair value of the interest rate swap agreements is reported in interest expense. Our interest rate swap contracts have maturity dates ranging from 2013 through 2016.															At December 31, 2012, we had interest rate swap agreements in place to hedge a portion of the variable interest rate risk on our variable rate borrowings under our credit agreement, with the objective of minimizing the impact of interest rate fluctuations and stabilizing cash flows. Under the terms of the interest rate swap agreements, we pay the fixed interest rate and have received and will receive payment at a variable rate of interest based on the London InterBank Offered Rate (“LIBOR”) or the Canadian Dealer Offered Rate (“CDOR”) for the respective currency of each interest rate swap agreement’s notional amount. The interest rate swap agreements qualify as cash flow hedges, and we have elected to apply hedge accounting for these swap agreements. As a result, the effective portion of changes in the fair value of the interest rate swap agreements is recorded in Accumulated Other Comprehensive Income (Loss) and is reclassified to interest expense when the underlying interest payment has an impact on earnings. The ineffective portion of changes in the fair value of the interest rate swap agreements is reported in interest expense.
	We hold foreign currency forward contracts related to certain foreign currency denominated intercompany transactions, with the objective of minimizing the impact of changing exchange rates on these future cash flows, as well as minimizing the impact of fluctuating exchange rates on our results of operations through the respective dates of settlement. Under the terms of the foreign currency forward contracts, we will sell euros and pounds sterling in exchange for U.S. dollars at a fixed rate on the maturity dates of the contracts. The effective portion of the changes in fair value of the foreign currency forward contracts is recorded in Accumulated Other Comprehensive Income and reclassified to other income (expense) when the underlying transaction has an impact on earnings. These foreign currency forward contracts expire in 2014.															The following table summarizes the terms of our interest rate swap agreements as of December 31, 2012:
	The following table summarizes the notional amounts and fair values of our designated cash flow hedges as of September 30, 2013 and December 31, 2012 (in thousands):
																Notional Amount	Effective Date	Maturity Date	Fixed Interest Rate*
																USD $250,000,000	October 14, 2010	October 14, 2015	3.31%
		Notional Amount				Fair Value at September 30, 2013 (USD)						Fair Value at December 31, 2012 (USD)				USD $100,000,000	April 14, 2011	October 14, 2013	2.86%
		30-Sep-13		31-Dec-12		Other Assets		Other Accrued Expenses		Other Noncurrent Liabilities		Other Accrued Expenses		Other Noncurrent Liabilities		USD $60,000,000	November 30, 2011	October 31, 2016	2.95%
	Interest rate swap agreements															USD $60,000,000	November 30, 2011	October 31, 2016	2.94%
	USD denominated	$	420,000	$	520,000	$	—	$	—	$	8,631	$	705	$	12,791	USD $50,000,000	December 30, 2011	December 30, 2016	2.94%
																GBP £50,000,000	November 30, 2011	October 30, 2016	3.11%
	GBP denominated	£	50,000	£	50,000	—		—		937		—		2,135		CAD $25,000,000	December 30, 2011	March 24, 2016	3.17%
	CAD denominated	C$	25,000	C$	25,000	52		—		—		—		12
																* Includes applicable margin of 1.75% per annum on LIBOR or CDOR-based debt in effect as of December 31, 2012 under the Credit Agreement.
	Foreign currency forward contracts															As of December 31, 2012, the fair market value of the $100 million notional amount swap was a liability of $0.7 million included in Other Accrued Expenses on our Consolidated Balance Sheets. The fair market value of the other swap contracts was a liability of $14.9 million included in Other Noncurrent Liabilities. As of December 31, 2011, the fair market value of the interest rate swap contracts was a liability of $10.6 million included in Other Noncurrent Liabilities on our Consolidated Balance Sheets. While our interest rate swaps executed with the same counterparty are subject to master netting arrangements, we present our interest rate swaps on a gross basis in our Consolidated Balance Sheets.
	EUR denominated	€	149,976	—		—		7,964		—		—		—		The activity related to our interest swap agreements is included in Note 14, "Accumulated Other Comprehensive Income (Loss)." In connection with the execution of our credit agreement on March 25, 2011 as discussed in Note 5, "Long-Term Obligations," we temporarily experienced differences in critical terms between the interest rate swaps and the underlying debt. As a result, we incurred a loss of $0.2 million related to hedge ineffectiveness in 2011. Beginning on April 14, 2011, we have held, and expect to continue to hold through the maturity of the respective interest rate swap agreements, at least the notional amount of each agreement in the respective variable-rate debt, such that we expect any future ineffectiveness will be immaterial and the swaps will continue to be highly effective in hedging our variable rate debt.
																As of December 31, 2012, we estimate that $4.1 million of derivative losses (net of tax) included in Accumulated Other Comprehensive Income (Loss) will be reclassified into interest expense within the next 12 months.
	GBP denominated	£	70,000	—		—		7,439		—		—		—		Other Derivative Instruments
																We hold other short-term derivative instruments, including foreign currency forward contracts and commodity forward contracts, to manage our exposure to variability in exchange rates and metals prices in certain of our operations. We have elected not to apply hedge accounting for these transactions, and therefore the contracts are adjusted to fair value through our results of operations as of each balance sheet date, which could result in volatility in our earnings. The notional amount and fair value of these contracts at December 31, 2012 and 2011, along with the effect on our results of operations in 2012 and 2011, were immaterial. We did not hold any foreign currency forward contracts or commodity forward contracts during the year ended December 31, 2010.
	Total cash flow hedges					$	52	$	15,403	$	9,568	$	705	$	14,938
	While our derivative instruments executed with the same counterparty are subject to master netting arrangements, we present our cash flow hedge derivative instruments on a gross basis on our Unaudited Consolidated Condensed Balance Sheets. The impact of netting the fair values of these contracts would not have a material effect on our Unaudited Consolidated Condensed Balance Sheets at September 30, 2013 or December 31, 2012.
	The activity related to our cash flow hedges is included in Note 12, "Accumulated Other Comprehensive Income." In May 2013, we repaid a portion of our variable rate U.S. dollar denominated credit agreement borrowings with the proceeds of our fixed rate senior notes, which resulted in one of our interest rate swap contracts, which expires in October 2013, no longer being designated as an effective cash flow hedge. As a result, we experienced an immaterial amount of hedge ineffectiveness during the three and nine month periods ended September 30, 2013. Hedge ineffectiveness related to our foreign currency forward contracts was immaterial to our results of operations during the three and nine months ended September 30, 2013. We expect future ineffectiveness related to our cash flow hedges will not have a material effect on our results of operations.
	As of September 30, 2013, we estimate that $3.8 million of derivative losses (net of tax) included in Accumulated Other Comprehensive Income will be reclassified into our Unaudited Consolidated Condensed Statements of Income within the next 12 months.
	Other Derivative Instruments
	We hold other short-term derivative instruments, including foreign currency forward contracts and commodity forward contracts, to manage our exposure to variability in exchange rates related to purchases of inventory invoiced in a non-functional currency and to metals prices in certain of our operations. We have elected not to apply hedge accounting for these transactions, and therefore the contracts are adjusted to fair value through our results of operations at each balance sheet date, which could result in volatility in our earnings. The notional amount and fair value of these contracts at September 30, 2013 and December 31, 2012, along with the effect on our results of operations during each of the three and nine month periods ended September 30, 2013 and September 30, 2012, were immaterial.

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended												12 Months Ended
	Sep. 30, 2013												Dec. 31, 2012
Fair Value Disclosures [Abstract]	'												'
Fair Value Measurements	'												'
	Fair Value Measurements												Fair Value Measurements
	Financial Assets and Liabilities Measured at Fair Value												Financial Assets and Liabilities Measured at Fair Value
	We use the market and income approaches to value our financial assets and liabilities, and during the nine months ended September 30, 2013, there were no significant changes in valuation techniques or inputs related to the financial assets or liabilities that we have historically recorded at fair value. In the second quarter of 2013, we entered into several foreign currency forward contracts as described in Note 5, "Derivative Instruments and Hedging Activities," which are recorded at fair market value. The tiers in the fair value hierarchy include: Level 1, defined as observable inputs such as quoted market prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.												We use the market and income approaches to value our financial assets and liabilities, and there were no significant changes in valuation techniques or inputs during the year ended December 31, 2012. The tiers in the fair value hierarchy include: Level 1, defined as observable inputs such as quoted market prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.
	The following tables present information about our financial assets and liabilities measured at fair value on a recurring basis and indicate the fair value hierarchy of the valuation inputs we utilized to determine such fair value as of September 30, 2013 and December 31, 2012 (in thousands):												The following tables present information about our financial assets and liabilities measured at fair value on a recurring basis and indicate the fair value hierarchy of the valuation inputs we utilized to determine such fair value as of December 31, 2012 and 2011 (in thousands):
		Balance as of September 30, 2013			Fair Value Measurements as of September 30, 2013									Balance as of December 31, 2012				Fair Value Measurements as of December 31, 2012
					Level 1		Level 2			Level 3								Level 1		Level 2		Level 3
	Assets:												Assets:
	Cash surrender value of life insurance	$	23,847		$	—	$	23,847		$	—		Cash surrender value of life insurance	$	19,492			$	—	$	19,492	$	—
	Interest rate swaps	52					52						Total Assets	$	19,492			$	—	$	19,492	$	—
	Total Assets	$	23,899		$	—	$	23,899		$	—		Liabilities:
													Contingent consideration liabilities	$	90,009			$	—	$	—	$	90,009
	Liabilities:
	Contingent consideration liabilities	$	54,485		$	—	$	—		$	54,485		Deferred compensation liabilities	19,843				—		19,843		—
	Deferred compensation liabilities	23,572			—		23,572			—			Interest rate swaps	15,643				—		15,643		—
	Foreign currency forward contracts	15,403			—		15,403			—			Total Liabilities	$	125,495			$	—	$	35,486	$	90,009
	Interest rate swaps	9,606			—		9,606			—
	Total Liabilities	$	103,066		$	—	$	48,581		$	54,485			Balance as of December 31, 2011				Fair Value Measurements as of December 31, 2011
																		Level 1		Level 2		Level 3
													Assets:
													Cash surrender value of life insurance	$	13,413			$	—	$	13,413	$	—
		Balance as of December 31, 2012			Fair Value Measurements as of December 31, 2012
					Level 1		Level 2			Level 3			Total Assets	$	13,413			$	—	$	13,413	$	—
	Assets:
	Cash surrender value of life insurance	$	19,492		$	—	$	19,492		$	—		Liabilities:
													Contingent consideration liabilities	$	82,382			$	—	$	—	$	82,382
	Total Assets	$	19,492		$	—	$	19,492		$	—
													Deferred compensation liabilities	14,071				—		14,071		—
	Liabilities:
	Contingent consideration liabilities	$	90,009		$	—	$	—		$	90,009		Interest rate swaps	10,576				—		10,576		—
	Deferred compensation liabilities	19,843			—		19,843			—			Total Liabilities	$	107,029			$	—	$	24,647	$	82,382
	Interest rate swaps	15,643			—		15,643			—
													The cash surrender value of life insurance and deferred compensation liabilities are included in Other Assets and Other Noncurrent Liabilities, respectively, on our Consolidated Balance Sheets. The contingent consideration liabilities are classified as separate line items in both current and noncurrent liabilities on our Consolidated Balance Sheets based on the expected timing of the related payments.
	Total Liabilities	$	125,495		$	—	$	35,486		$	90,009		Our Level 2 assets and liabilities are valued using inputs from third parties and market observable data. We obtain valuation data for the cash surrender value of life insurance and deferred compensation liabilities from third party sources, which determine the net asset values for our accounts using quoted market prices, investment allocations and reportable trades. We value the interest rate swaps using a third party valuation model that performs a discounted cash flow analysis based on the terms of the contracts and market observable inputs such as current and forward interest rates.
													Our contingent consideration liabilities are related to our business acquisitions as further described in Note 9, "Business Combinations." Under the terms of the contingent consideration agreements, payments may be made at specified future dates depending on the performance of the acquired business subsequent to the acquisition. The liabilities for these payments are classified as Level 3 liabilities because the related fair value measurement, which is determined using an income approach, includes significant inputs not observable in the market. These unobservable inputs include internally-developed assumptions of the probabilities of achieving specified targets, which are used to determine the resulting cash flows and the applicable discount rate. Our Level 3 fair value measurements are established and updated quarterly by our corporate accounting department using current information about these key assumptions, with the input and oversight of our operational and executive management teams. We evaluate the performance of the business during the period compared to our previous expectations, along with any changes to our future projections, and update the estimated cash flows accordingly. In addition, we consider changes to our cost of capital and changes to the probability of achieving the earnout payment targets when updating our discount rate on a quarterly basis.
													The significant unobservable inputs used in the fair value measurements of our Level 3 contingent consideration liabilities were as follows:
	The cash surrender value of life insurance and deferred compensation liabilities are included in Other Assets and Other Noncurrent Liabilities, respectively, on our Unaudited Consolidated Condensed Balance Sheets. The contingent consideration liabilities are classified as separate line items in both current and noncurrent liabilities on our Unaudited Consolidated Condensed Balance Sheets based on the expected timing of the related payments. The balance sheet classification of the interest rate swaps and foreign currency forward contracts is presented in Note 5, "Derivative Instruments and Hedging Activities."
	Our Level 2 assets and liabilities are valued using inputs from third parties and market observable data. We obtain valuation data for the cash surrender value of life insurance and deferred compensation liabilities from third party sources, which determine the net asset values for our accounts using quoted market prices, investment allocations and reportable trades. We value our derivative instruments using a third party valuation model that performs a discounted cash flow analysis based on the terms of the contracts and market observable inputs such as current and forward interest rates and current and forward foreign exchange rates.
	Our contingent consideration liabilities are related to certain of our business acquisitions as further described in Note 9, "Business Combinations." Under the terms of the contingent consideration agreements, payments may be made at specified future dates depending on the performance of the acquired business subsequent to the acquisition. The liabilities for these payments are classified as Level 3 liabilities because the related fair value measurement, which is determined using an income approach, includes significant inputs not observable in the market. These unobservable inputs include internally-developed assumptions of the probabilities of achieving specified targets, which are used to determine the resulting cash flows and the applicable discount rate. Our Level 3 fair value measurements are established and updated quarterly by our corporate accounting department using current information about these key assumptions, with the input and oversight of our operational and executive management teams. We evaluate the performance of the business during the period compared to our previous expectations, along with any changes to our future projections, and update the estimated cash flows accordingly. In addition, we consider changes to our cost of capital and changes to the probability of achieving the earnout payment targets when updating our discount rate on a quarterly basis.													December 31,
	The significant unobservable inputs used in the fair value measurements of our Level 3 contingent consideration liabilities were as follows:													2012			2011
													Unobservable Input	(Weighted Average)
													Probability of achieving payout targets	79.7	%		78.1	%
	Unobservable Input	September 30, 2013 Weighted Average		December 31, 2012 Weighted Average									Discount rate	6.6	%		3	%
	Probability of achieving payout targets	71.7	%	79.7	%								A significant decrease in the assessed probabilities of achieving the targets or a significant increase in the discount rate, in isolation, would result in a significantly lower fair value measurement. Changes in the values of the liabilities are recorded in Change in Fair Value of Contingent Consideration Liabilities within Other Expense (Income) on our Consolidated Statements of Income.
	Discount rate	6.5	%	6.6	%								Changes in the fair value of our contingent consideration obligations are as follows (in thousands):
	A significant decrease in the assessed probabilities of achieving the targets or a significant increase in the discount rate, in isolation, would result in a significantly lower fair value measurement. Changes in the values of the liabilities are recorded in Change in Fair Value of Contingent Consideration Liabilities within Other Expense (Income) on our Unaudited Consolidated Condensed Statements of Income.
	Changes in the fair value of our contingent consideration liabilities for the three and nine months ended September 30, 2013 and 2012 were as follows (in thousands):
													Balance as of January 1, 2011	$	2,000
		Three Months Ended					Nine Months Ended						Contingent consideration liabilities recorded for business acquisitions	81,239
		September 30,					September 30,
		2013			2012		2013			2012			Decrease in fair value included in earnings	(1,408		)
	Beginning balance	$	49,473		$	88,037	$	90,009		$	82,382		Exchange rate effects	551
	Contingent consideration liabilities recorded for business acquisitions	1,204			—		3,854			5,540			Balance as of December 31, 2011	$	82,382
	Payments	—			—		(38,349		)	(600		)	Contingent consideration liabilities recorded for business acquisitions	5,456
	Loss included in earnings	712			1,892		1,765			1,787			Payments	(3,100		)
													Increase in fair value included in earnings	1,643
	Exchange rate effects	3,096			2,353		(2,794		)	3,173
													Exchange rate effects	3,628
	Ending balance	$	54,485		$	92,282	$	54,485		$	92,282
													Balance as of December 31, 2012	$	90,009
	The purchase price for our 2011 acquisition of Euro Car Parts Holdings Limited ("ECP") included contingent payments depending on the achievement of certain annual performance targets in 2012 and 2013. The performance target for 2012 was exceeded, and during the three months ended March 31, 2013, we paid £25.0 million, the maximum contingent payment, through a cash payment of $33.9 million (£22.4 million) and the issuance of notes for $3.9 million (£2.6 million). In April 2013, we amended the ECP contingent payment agreement, and as a result, we are obligated to pay Draco Limited, one of the sellers of ECP, approximately £27 million in the first quarter of 2014, which is equal to the maximum payment for Draco Limited's share of the contingent payment agreement for the 2013 performance period. The effect of the amendment did not have a material effect on our financial position or our results of operations, and we believe the amendment will not have a material effect on our future cash flows, as the fair value of the contingent payment liability prior to the amendment was calculated assuming a high probability of achieving the performance targets for the maximum payment. See Note 9, "Business Combinations" for further information on the amendment.
	Of the amounts included in earnings for the three and nine months ended September 30, 2013, $0.7 million and $2.8 million of losses, respectively, relate to contingent consideration liabilities outstanding as of September 30, 2013. The amounts included in earnings for the three and nine months ended September 30, 2012 included $0.9 million and $0.5 million of losses, respectively, related to contingent consideration liabilities outstanding as of September 30, 2013. The changes in the fair value of contingent consideration liabilities during the respective periods in 2013 and 2012 are a result of the quarterly assessment of the fair value inputs. The net loss during the nine month period ended September 30, 2012 also includes the impact related to the adoption of FASB ASU No. 2011-04, "Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs" (which adoption did not have a material impact).												The net loss included in earnings for the year ended December 31, 2012 included $1.5 million of losses related to contingent consideration obligations outstanding as of December 31, 2012. The gain included in earnings for the year ended December 31, 2011 is related to a contingent consideration obligation that was settled prior to December 31, 2012. The changes in the fair value of contingent consideration obligations during 2012 and 2011 are a result of the quarterly assessment of the fair value inputs. The loss during the year ended December 31, 2012 also includes the impact related to the adoption of FASB ASU No. 2011-04 as described in Note 2, "Summary of Significant Accounting Policies" (which adoption did not have a material impact).
	Financial Assets and Liabilities Not Measured at Fair Value												Financial Assets and Liabilities Not Measured at Fair Value
	Our debt is reflected on the Unaudited Consolidated Condensed Balance Sheets at cost. Based on market conditions as of September 30, 2013 and December 31, 2012, the fair value of our credit agreement borrowings reasonably approximated the carrying value of $644 million and $975 million, respectively. In addition, based on market conditions, the fair value of the outstanding borrowings under the receivables facility reasonably approximated the carrying value of $10 million and $80 million at September 30, 2013 and December 31, 2012, respectively. As of September 30, 2013, the fair value of our senior notes was approximately $560 million compared to a carrying value of $600 million.												Our debt is reflected on the Consolidated Balance Sheets at cost. Based on market conditions as of December 31, 2012 and 2011, the fair value of our Credit Agreement borrowings reasonably approximated the carrying value of $975 million and $901 million, respectively. As discussed in Note 5, "Long-Term Obligations," we entered into a Receivables Facility on September 28, 2012. Based on market conditions as of December 31, 2012, the fair value of the outstanding borrowings under the Receivables Facility reasonably approximated the carrying value of $80 million.
The fair value measurements of the borrowings under our credit agreement and receivables facility are classified as Level 2 within the fair value hierarchy since they are determined based upon significant inputs observable in the market including interest rates on recent financing transactions with similar terms and maturities. We estimated the fair value by calculating the upfront cash payment a market participant would require at September 30, 2013 to assume these obligations. The fair value of our senior notes, which is determined using quoted market prices in the secondary market, is also classified as Level 2 within the fair value hierarchy because the market for these financial instruments is not considered an active market.												The fair value measurements of our debt instruments are classified as Level 2 within the fair value hierarchy since they are determined based upon significant inputs observable in the market including interest rates on recent financing transactions with similar terms and maturities. We estimated the fair value by calculating the upfront cash payment a market participant would require at December 31, 2012 to assume these obligations.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended			12 Months Ended
	Sep. 30, 2013			Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]	'			'
Commitments and Contingencies	'			'
	Commitments and Contingencies			Commitments and Contingencies
	Operating Leases			Operating Leases
	We are obligated under noncancelable operating leases for corporate office space, warehouse and distribution facilities, trucks and certain equipment.			We are obligated under noncancelable operating leases for corporate office space, warehouse and distribution facilities, trucks and certain equipment.
	The future minimum lease commitments under these leases at September 30, 2013 are as follows (in thousands):			The future minimum lease commitments under these leases at December 31, 2012 are as follows (in thousands):
	Three months ending December 31, 2013	$	28,271	Years ending December 31:
				2013	$	99,345
	Years ending December 31:
	2014	106,631		2014	88,494
	2015	94,988		2015	78,536
	2016	76,776		2016	62,795
	2017	60,730		2017	51,159
	2018	47,713		Thereafter	156,506
	Thereafter	145,446		Future Minimum Lease Payments	$	536,835
	Future Minimum Lease Payments	$	560,555	Rental expense for operating leases was approximately $101.1 million, $83.7 million and $66.9 million during the years ended December 31, 2012, 2011 and 2010, respectively.
				We guarantee the residual values of the majority of our truck and equipment operating leases. The residual values decline over the lease terms to a defined percentage of original cost. In the event the lessor does not realize the residual value when a piece of equipment is sold, we would be responsible for a portion of the shortfall. Similarly, if the lessor realizes more than the residual value when a piece of equipment is sold, we would be paid the amount realized over the residual value. Had we terminated all of our operating leases subject to these guarantees at December 31, 2012, the guaranteed residual value would have totaled approximately $28.7 million. We have not recorded a liability for the guaranteed residual value of equipment under operating leases as the recovery on disposition of the equipment under the leases is expected to approximate the guaranteed residual value.
	Litigation and Related Contingencies			Litigation and Related Contingencies
	We are a plaintiff in a class action lawsuit against several aftermarket product suppliers. During the three and nine month periods ended September 30, 2012, we recognized gains of $0.5 million and $17.2 million, respectively, resulting from settlements with certain of the defendants. These gains were recorded as a reduction of Cost of Goods Sold on our Unaudited Consolidated Condensed Statements of Income.			We are a plaintiff in a class action lawsuit against several aftermarket product suppliers. During 2012, we recognized gains totaling $17.9 million resulting from settlements with certain of the defendants. These gains were recorded as a reduction of Cost of Goods Sold on our Consolidated Statements of Income. The class action is still pending against two defendants, the results of which are not expected to be material to our results of operations or cash flows. If there is a class settlement with (or a favorable judgment entered against) each of the remaining defendants, we will recognize the gain from such settlement or judgment when substantially all uncertainties regarding its timing and amount are resolved and realization is assured.
	We also have certain contingencies resulting from litigation, claims and other commitments and are subject to a variety of environmental and pollution control laws and regulations incident to the ordinary course of business. We currently expect that the resolution of such contingencies will not materially affect our financial position, results of operations or cash flows.			We also have certain contingencies resulting from litigation, claims and other commitments and are subject to a variety of environmental and pollution control laws and regulations incident to the ordinary course of business. We currently expect that the resolution of such contingencies will not materially affect our financial position, results of operations or cash flows.

Business_Combinations

Business Combinations	9 Months Ended													12 Months Ended
	Sep. 30, 2013													Dec. 31, 2012
Business Combinations [Abstract]	'													'
Business Combinations	'													'
	Business Combinations													Business Combinations
	On May 1, 2013, LKQ Netherlands B.V., a subsidiary of LKQ Corporation, entered into a sale and purchase agreement with H2 Sator B.V., Cooperatieve H2 Sator U.A. and H2 Sator U.A. (collectively the "Sellers") to acquire the shares of Sator, an automotive aftermarket parts distribution company based in the Netherlands, with operations in the Netherlands, Belgium and Northern France.  With the acquisition of Sator, we expanded our geographic presence in the European automotive aftermarket products market into continental Europe to complement our existing U.K. operations. Total acquisition date fair value of the consideration for the acquisition of Sator was €209.8 million ($272.8 million) of cash, net of cash acquired. We recorded $139.2 million of goodwill related to our acquisition of Sator, which we do not expect will be deductible for income tax purposes. In the period between May 1, 2013 and September 30, 2013, Sator generated approximately $165.4 million of revenue and $4.4 million of net income.													During the year ended December 31, 2012, we made 30 acquisitions in North America, including 22 wholesale businesses and eight self service retail operations. These acquisitions enabled us to expand our geographic presence and enter new markets. Additionally, two of our acquisitions were completed with a goal of improving the recovery from scrap and other metals harvested from the vehicles we purchase: a precious metals refining and reclamation business, which we acquired with the goal of improving the profitability of the precious metals we extract from our recycled vehicle parts; and a scrap metal shredder, which we expect will improve the profitability of the scrap metals recovered from the vehicle hulks in certain of our recycled product operations.
	In addition to our acquisition of Sator, we made sixteen acquisitions during the nine months ended September 30, 2013, including seven wholesale businesses in our European segment, eight wholesale businesses in North America and a self service operation. Our European acquisitions included five automotive paint distribution businesses in the U.K., which enabled us to expand our collision product offerings. Our other acquisitions completed during the nine months ended September 30, 2013 enabled us to expand into new product lines and enter new markets. Total acquisition date fair value of the consideration for these acquisitions was $133.1 million, composed of $122.4 million of cash (net of cash acquired), $6.8 million of notes payable, $0.1 million of other purchase price obligations (non-interest bearing) and $3.9 million for the estimated value of contingent payments to former owners. The maximum amount of the contingent payment is $4.9 million. During the nine months ended September 30, 2013, we recorded $88.1 million of goodwill related to these acquisitions and immaterial adjustments to preliminary purchase price allocations related to certain of our 2012 acquisitions. We expect $9.5 million of the $88.1 million of goodwill recorded to be deductible for income tax purposes. In the period between the acquisition dates and September 30, 2013, these acquisitions generated $56.0 million of revenue and $2.2 million of net income.													Total acquisition date fair value of the consideration for the 2012 acquisitions was $284.6 million, composed of $261.5 million of cash (net of cash acquired), $16.0 million of notes payable, $1.6 million of other purchase price obligations (non-interest bearing) and $5.5 million of contingent payments to former owners. The contingent consideration arrangements made in connection with our 2012 acquisitions have a maximum potential payout of $6.5 million.
	The consideration for our 2011 acquisition of ECP included a contingent payment agreement with a potential payment of up to £30 million based on ECP's 2013 results. In April 2013, we entered into an agreement waiving for Draco Limited, one of the sellers of ECP, the condition of ECP achieving the 2013 performance target, subject to the closing of the Sator acquisition.  As a result of the waiver and the closing of the Sator acquisition in May 2013, we are obligated to pay Draco Limited approximately £27 million in the first quarter of 2014, which is equal to the maximum payment for Draco Limited's share of the contingent payment agreement. The waiver of the 2013 performance targets did not have a material impact on our financial position or results of operations, and it is not expected to have a material impact on our cash flows, as the fair value of the contingent payment liability prior to the waiver was calculated assuming a high probability of achieving the performance targets for the maximum payment. We also believe the waiver will improve our flexibility to execute our European strategy.													During the year ended December 31, 2012, we recorded $197.6 million of goodwill related to these acquisitions and immaterial adjustments to preliminary purchase price allocations related to certain of our 2011 acquisitions. We expect $157.8 million of the $197.6 million of goodwill recorded to be deductible for income tax purposes. In the period between the acquisition dates and December 31, 2012, our 2012 acquisitions generated $116.3 million of revenue and $11.0 million of operating income. Of our 30 acquisitions completed in 2012, eight were completed in December 2012, and therefore, contributed less than one month of revenue and operating income for the year ended December 31, 2012.
	During the year ended December 31, 2012, we made 30 acquisitions in North America, including 22 wholesale businesses and 8 self service retail operations. These acquisitions enabled us to expand our geographic presence and to enter new markets. Additionally, two of our acquisitions were completed with a goal of improving the recovery from scrap and other metals harvested from the vehicles we purchase: a precious metals refining and reclamation business and a scrap metal shredder.													Subsequent to December 31, 2012, we completed the acquisition of an aftermarket product distributor in the U.K. and a paint distribution business in Canada. We are in the process of completing the purchase accounting for these acquisitions, and as a result, we are unable to disclose the amounts recognized for each major class of assets acquired and liabilities assumed, or the pro forma effect of the acquisition on our results of operations.
	Total acquisition date fair value of the consideration for the 2012 acquisitions was $284.6 million, composed of $261.5 million of cash (net of cash acquired), $16.0 million of notes payable, $1.6 million of other purchase price obligations (non-interest bearing) and $5.5 million of contingent payments to former owners. The contingent consideration arrangements made in connection with our 2012 acquisitions have a maximum potential payout of $6.5 million.													On October 3, 2011, LKQ Corporation, LKQ Euro Limited (“LKQ Euro”), a subsidiary of LKQ Corporation, and Draco Limited (“Draco”) entered into an Agreement for the Sale and Purchase of Shares of Euro Car Parts Holdings Limited (the “Sale and Purchase Agreement”). Under the terms of the Sale and Purchase Agreement, effective October 1, 2011, LKQ Euro acquired all of the shares in the capital of ECP, an automotive aftermarket products distributor in the U.K., from Draco and the other shareholders of ECP. With the acquisition of ECP, we expanded our geographic presence beyond North America into the European market. Our acquisition of ECP established our Wholesale – Europe operating segment. Total acquisition date fair value of the consideration for the ECP acquisition was £261.6 million ($403.7 million), composed of £190.3 million ($293.7 million) of cash (net of cash acquired), £18.4 million ($28.3 million) of notes payable, £2.7 million ($4.1 million) of other purchase price obligations (non-interest bearing) and a contingent payment to the former owners of ECP. Pursuant to the contingent payment terms, if certain annual performance targets are met by ECP, we will be obligated to pay between £22 million and £25 million and between £23 million and £30 million for the years ending December 31, 2012 and 2013, respectively. We determined the acquisition date fair value of these contingent payments to be £50.2 million ($77.5 million at the exchange rate on October 3, 2011). For the 2012 annual performance period, ECP exceeded the stated performance targets, and therefore, we accrued the maximum payout for the 2012 earnout period as of December 31, 2012. See Note 7, "Fair Value Measurements" for additional information on changes to the fair value of our contingent consideration liabilities during the years ended December 31, 2012 and 2011.
	During the year ended December 31, 2012, we recorded $197.6 million of goodwill related to these 30 acquisitions and immaterial adjustments to preliminary purchase price allocations related to certain of our 2011 acquisitions. Of this amount, approximately $157.8 million is expected to be deductible for income tax purposes.													We recorded goodwill of $332.9 million for the ECP acquisition, which will not be deductible for income tax purposes.
	Our acquisitions are accounted for under the purchase method of accounting and are included in our unaudited consolidated condensed financial statements from the dates of acquisition. The purchase prices were allocated to the net assets acquired based upon estimated fair market values at the dates of acquisition. The purchase price allocations for the acquisitions made during the nine months ended September 30, 2013 and the last three months of 2012 are preliminary as we are in the process of determining the following: 1) valuation amounts for certain receivables, inventories and fixed assets acquired; 2) valuation amounts for certain intangible assets acquired; 3) the acquisition date fair value of certain liabilities assumed; and 4) the final estimation of the tax basis of the entities acquired. We have recorded preliminary estimates for certain of the items noted above and will record adjustments, if any, to the preliminary amounts upon finalization of the valuations.													In addition to our acquisition of ECP, we made 20 acquisitions in North America in 2011 (17 wholesale businesses and three self service retail operations). Our acquisitions included the purchase of two engine remanufacturers, which expanded our presence in the remanufacturing industry that we entered in 2010. Additionally, our acquisition of an automotive heating and cooling component distributor supplements our expansion into the automotive heating and cooling aftermarket products market. Our North American wholesale business acquisitions also included the purchase of the U.S. vehicle refinish paint distribution business of Akzo Nobel Automotive and Aerospace Coatings (the “Akzo Nobel paint business”), which allowed us to increase our paint and related product offerings and expand our geographic presence in the automotive paint market. Our other 2011 acquisitions enabled us to expand our geographic presence and enter new markets.
	The preliminary purchase price allocations for the acquisitions completed during the nine months ended September 30, 2013 and the year ended December 31, 2012 are as follows (in thousands):													Total acquisition date fair value of the consideration for these 20 acquisitions was $207.3 million, composed of $193.2 million of cash (net of cash acquired), $5.9 million of notes payable, $4.5 million of other purchase price obligations (non-interest bearing) and $3.7 million of contingent payments to former owners. In conjunction with the acquisition of the Akzo Nobel paint business on May 26, 2011, we entered into a wholesaler agreement under which we became an authorized distributor of Akzo Nobel products in the acquired markets. Included in this agreement is a requirement to make an additional payment to Akzo Nobel in the event that our purchases of Akzo Nobel products do not meet specified thresholds from June 1, 2011 to May 31, 2014. This contingent payment will be calculated as the difference between our actual purchases and the targeted purchase levels outlined in the agreement for the specified period with a maximum payment of $21 million. The contingent consideration liability recorded in 2011 also includes two additional arrangements that have a maximum potential payout of $4.6 million. The acquisition date fair value of these contingent consideration agreements is immaterial.
														During the year ended December 31, 2011, we recorded $105.2 million of goodwill related to these 20 acquisitions and immaterial adjustments to preliminary purchase price allocations related to certain of our 2010 acquisitions. Of this amount, approximately $88.3 million is expected to be deductible for income tax purposes.
														In 2010, we made 20 acquisitions in North America (18 wholesale businesses and two self service retail operations). Our acquisitions included the purchase of an engine remanufacturer, which allowed us to further vertically integrate our supply chain. We expanded our product offerings through the acquisition of an automotive heating and cooling component business, as well as a tire recycling business. Our 2010 acquisitions have also enabled us to expand our geographic presence, most notably in Canada through our purchase of Cross Canada, an aftermarket product supplier.
														Total acquisition date fair value of the consideration for the 2010 acquisitions was $170.4 million, composed of $143.6 million of cash (net of cash acquired), $5.5 million of notes payable, $4.4 million of other purchase price obligations (non-interest bearing), $2.0 million of contingent payments to former owners and $14.9 million in stock issued (1,379,310 shares). The $14.9 million of common stock was issued in connection with our acquisition of Cross Canada on November 1, 2010. The fair value of common stock issued was based on the market price of LKQ stock on the date of issuance. We recorded goodwill of $91.8 million for the 2010 acquisitions, of which $74.9 million is expected to be deductible for income tax purposes.
		Nine Months Ended September 30, 2013									Year Ended			Our acquisitions are accounted for under the purchase method of accounting and are included in our consolidated financial statements from the dates of acquisition. The purchase prices were allocated to the net assets acquired based upon estimated fair market values at the dates of acquisition. In connection with the 2012 acquisitions, the purchase price allocations are preliminary as we are in the process of determining the following: 1) valuation amounts for certain of the inventories and equipment acquired; 2) valuation amounts for certain intangible assets acquired; 3) the acquisition date fair value of certain liabilities assumed; and 4) the final estimation of the tax basis of the entities acquired.
		Sator			Other Acquisitions			Total			31-Dec-12			The purchase price allocations for the acquisitions completed during 2012 and 2011 are as follows (in thousands):
	Receivables	$	61,639		$	38,329		$	99,968		$	15,473
	Receivable reserves	(8,563		)	(3,023		)	(11,586		)	(1,459		)
	Inventory	71,784			24,119			95,903			62,305				Year Ended December 31,
															2012			2011
	Prepaid expenses and other current assets	7,184			2,027			9,211			201				(Preliminary)			ECP			Other Acquisitions			Total
														Receivables	$	15,473		$	54,225		$	23,538		$	77,763
	Property and equipment	19,484			12,517			32,001			31,930
														Receivable reserves	(1,459		)	(3,832		)	(1,121		)	(4,953		)
	Goodwill	139,158			88,103			227,261			201,742			Inventory	62,305			93,835			59,846			153,681
	Other intangibles	49,978			4,868			54,846			655			Prepaid expenses and other current assets	201			3,189			2,820			6,009
	Other assets	2,049			1,232			3,281			187			Property and equipment	31,930			41,830			10,614			52,444
	Deferred income taxes	(15,222		)	49			(15,173		)	428			Goodwill	201,742			332,891			105,177			438,068
	Current liabilities assumed	(49,593		)	(34,438		)	(84,031		)	(22,910		)	Other intangibles	655			43,723			7,683			51,406
	Debt assumed	—			(664		)	(664		)	(3,989		)
														Other assets	187			13			9,420			9,433
	Other noncurrent liabilities assumed	(5,074		)	—			(5,074		)	—
														Deferred income taxes	428			(13,218		)	7,235			(5,983		)
	Contingent consideration liabilities	—			(3,854		)	(3,854		)	(5,456		)
														Current liabilities assumed	(22,910		)	(135,390		)	(17,257		)	(152,647		)
	Other purchase price obligations	—			(86		)	(86		)	(1,647		)	Debt assumed	(3,989		)	(13,564		)	—			(13,564		)
	Notes issued	—			(6,782		)	(6,782		)	(15,990		)	Other noncurrent liabilities assumed	—			—			(619		)	(619		)
	Cash used in acquisitions, net of cash acquired	$	272,824		$	122,397		$	395,221		$	261,470		Contingent consideration liabilities	(5,456		)	(77,539		)	(3,700		)	(81,239		)
														Other purchase price obligations	(1,647		)	(4,136		)	(4,510		)	(8,646		)
	Included in other noncurrent liabilities recorded for our Sator acquisition is a preliminary estimate for certain pension and other post-retirement obligations we assumed with the acquisition. Due to the immateriality of these plans, we have not provided the detailed disclosures otherwise prescribed by the accounting guidance on pensions and other post-retirement obligations.													Notes issued	(15,990		)	(28,302		)	(5,917		)	(34,219		)
	The primary reason for our acquisitions made during the nine months ended September 30, 2013 and the year ended December 31, 2012 was to leverage our strategy of becoming a one-stop provider for alternative vehicle replacement products. These acquisitions enabled us to expand our market presence, to widen our product offerings, including paint and related equipment in the U.K., and to enter new markets, including continental Europe through the Sator acquisition. When we identify potential acquisitions, we attempt to target companies with a leading market share, an experienced management team and workforce that provide a fit with our existing operations and strong cash flows. For certain of our acquisitions, we have identified cost savings and synergies as a result of integrating the company with our existing business that provide additional value to the combined entity. In many cases, acquiring companies with these characteristics can result in purchase prices that include a significant amount of goodwill.													Cash used in acquisitions, net of cash acquired	$	261,470		$	293,725		$	193,209		$	486,934
	es and judgments that we believe are reasonable. The unaudited pro forma supplemental information includes the effect of purchase accounting adjustments, such as the adjustment of inventory acquired to net realizable value, adjustments to depreciation on acquired property and equipment, adjustments to rent expense for above or below market leases, adjustments to amortization on acquired intangible assets, adjustments to interest expense, and the related tax effects. The pro forma impact of our Sator acquisition reflects the elimination of acquisition related expenses totaling $3.6 million for the nine months ended September 30, 2013, which do not have a continuing impact on the our operating results. Additionally, the pro forma impact of our other acquisitions reflects the elimination of acquisition related expenses totaling $1.6 million and $2.0 million for the three and nine months ended September 30, 2013, respectively. Refer to Note 10, "Restructuring and Acquisition Related Expenses," for further information on our acquisition related expenses. These pro forma results are not necessarily indicative either of what would have occurred if the acquisitions had been in effect for the period presented or of future results.
														The primary reason for our acquisitions made in 2012, 2011 and 2010 was to leverage our strategy of becoming a one-stop provider for alternative vehicle replacement products. These acquisitions enabled us to expand our market presence, widen our product offerings and enter new markets. When we identify potential acquisitions, we attempt to target companies with a leading market share, an experienced management team and workforce that provide a fit with our existing operations and strong cash flows. In many cases, acquiring companies with these characteristics can result in purchase prices that include a significant amount of goodwill.
														Our acquisition of ECP in 2011 marked our entry into the European automotive aftermarket business and provides an opportunity to us as that market has historically had a low penetration of alternative collision parts. We targeted the U.K. as a desirable market for international expansion. We believe growth opportunities exist for this business, both through the geographic expansion into new primary and secondary markets, as well as through increased product offerings including alternative collision parts. By acquiring ECP, a leading distributor of alternative automotive products, we were able to gain access to this market in a manner that we viewed as quicker and more cost effective than would have been achievable through a start-up organization and organic growth. The potential growth opportunities, combined with the developed distribution network, experienced management team, and established workforce, contributed to the $332.9 million of goodwill recognized related to this acquisition.
														The following pro forma summary presents the effect of the businesses acquired during the year ended December 31, 2012 as though the businesses had been acquired as of January 1, 2011, the businesses acquired during the year ended December 31, 2011 as though they had been acquired as of January 1, 2010 and the businesses acquired during the year ended December 31, 2010 as though they had been acquired as of January 1, 2009. The pro forma adjustments are based upon unaudited financial information of the acquired entities (in thousands, except per share data):
															Year Ended December 31,
															2012			2011			2010
														Revenue, as reported	$	4,122,930		$	3,269,862		$	2,469,881
														Revenue of purchased businesses for the period prior to acquisition:
														ECP	—			407,042			420,769
														Other acquisitions	202,144			466,002			504,044
														Pro forma revenue	$	4,325,074		$	4,142,906		$	3,394,694
														Income from continuing operations, as reported	$	261,225		$	210,264		$	167,118
														Net income of purchased businesses for the period prior to acquisition, including pro forma purchase accounting adjustments:
														ECP	—			21,858			9,669
														Other acquisitions	12,674			27,396			12,996
														Pro forma income from continuing operations	$	273,899		$	259,518		$	189,783
														Basic earnings per share from continuing operations, as reported	$	0.88		$	0.72		$	0.58
														Effect of purchased businesses for the period prior to acquisition:
														ECP	—			0.07			0.03
														Other acquisitions	0.04			0.09			0.05
														Pro forma basic earnings per share from continuing operations (a)	$	0.93		$	0.89		$	0.66
														Diluted earnings per share from continuing operations, as reported	$	0.87		$	0.71		0.57
														Effect of purchased businesses for the period prior to acquisition:
														ECP	—			0.07			0.03
													Other acquisitions	0.04			0.09			0.04
													Pro forma diluted earnings per share from continuing operations (a)	$	0.91		$	0.87		$	0.65
													(a) The sum of the individual earnings per share amounts may not equal the total due to rounding.
													Unaudited pro forma supplemental information is based upon accounting estimates and judgments that we believe are reasonable. The unaudited pro forma supplemental information includes the effect of purchase accounting adjustments, such as the adjustment of inventory acquired to net realizable value, adjustments to depreciation on acquired property and equipment, adjustments to amortization on acquired intangible assets, adjustments to interest expense, and the related tax effects. These pro forma results are not necessarily indicative either of what would have occurred if the acquisitions had been in effect for the period presented or of future results.

Restructuring_and_Acquisition_

Restructuring and Acquisition Related Expenses	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Restructuring and Related Activities [Abstract]	'	'
Restructuring and Acquisition Related Expenses	'	'
	Restructuring and Acquisition Related Expenses	Restructuring and Acquisition Related Expenses
	Acquisition Related Expenses	Refurbished Bumper and Wheel Restructuring
	Acquisition related expenses, which include external costs such as advisory, legal and accounting fees, totaled $2.0 million and $6.0 million for the three and nine months ended September 30, 2013. Expenses incurred during the three and nine months ended September 30, 2013 included $1.4 million related to our U.K. paint acquisitions. Expenses for the nine months ended September 30, 2013 also included $3.6 million related to our acquisition of Sator in May 2013. These costs are expensed as incurred.	In the second quarter of 2012, we initiated a restructuring plan to improve the operational efficiency of our refurbished product operations and to reduce the cost structure of the related refurbished bumper and wheel product lines. As part of the restructuring plan, we consolidated certain of our bumper and wheel refurbishing operations, with a focus on increasing output at the remaining operations to improve economies of scale. Restructuring costs included the write off of disposed assets, severance costs for termination of overlapping headcount, costs to move equipment and inventory, and excess facility costs. These costs are expensed as incurred, when the costs meet the criteria to be accrued, or, in the case of non-performing lease reserves, at the cease-use date of the facility. During the year ended December 31, 2012, we incurred $1.1 million of expense related to this restructuring plan. We are in the process of finalizing our restructuring plan, and we do not expect the remaining expenses to complete our plan will be material.
	Acquisition Integration Plans	Akzo Nobel Paint Business Integration
	During the three and nine months ended September 30, 2013, we incurred $0.2 million and $1.4 million, respectively, of restructuring expenses primarily related to the integration of certain of our 2012 acquisitions. Our integration activities included the closure of duplicate facilities, termination of employees in connection with the consolidation of overlapping facilities with our existing business, moving expenses, and other third party services directly related to our acquisitions. We expect our integration plans for these acquisitions to be completed by the end of 2013. Remaining costs to complete these integration activities are expected to be immaterial.	With our acquisition of the Akzo Nobel paint business in the second quarter of 2011, we initiated certain restructuring activities to integrate the acquired paint distribution locations into our existing business. Our restructuring plan included the closure of duplicate facilities, elimination of overlapping delivery routes and termination of employees in connection with the consolidation of the overlapping facilities and delivery routes. During the year ended December 31, 2011, we incurred $2.6 million of charges primarily related to excess facility costs, which were expensed at the cease-use date for the facilities. We substantially completed the integration activities related to the Akzo Nobel paint business acquisition as of December 31, 2011.
	Beginning in the fourth quarter of 2013, we expect to initiate restructuring plans to integrate certain of our 2013 European acquisitions into our existing operations. Our restructuring plans include the closure of duplicate facilities, elimination of overlapping delivery routes and termination of employees in duplicate functions. Restructuring costs are estimated to be approximately $4.0 million, which includes severance, moving costs and other facility closure costs. The majority of the integration activities related to these acquisitions is expected to be completed by the end of 2014.	Other Acquisition Integration Plans and Acquisition Related Expenses
	During the three and nine months ended September 30, 2012, we incurred $0.1 million and $1.4 million, respectively, of restructuring and acquisition related expenses related to certain of our 2011 and 2012 acquisitions. Our integration activities included the closure of duplicate facilities, termination of employees in connection with the consolidation of overlapping facilities with our existing business, moving expenses, and other third party services directly related to our acquisitions. These integration activities were substantially completed in 2012.	During the year ended December 31, 2012, we incurred $1.2 million of restructuring expenses related to the integration of certain of our 2011 and 2012 acquisitions. These integration activities included the closure of duplicate facilities, termination of employees in connection with the consolidation of overlapping facilities with our existing business, and moving expenses. Future expenses to complete these integration plans in the first half of 2013, including expenses for additional closures of overlapping facilities and termination of duplicate headcount, are not expected to exceed $1 million. Acquisition related expenses, which consist of external costs directly related to our acquisitions, such as closing costs and advisory, legal, accounting, valuation and other professional fees, totaled $0.5 million during the year ended December 31, 2012. These costs are expensed as incurred.
	Refurbished Bumper and Wheel Restructuring	During the year ended December 31, 2011, we incurred $1.8 million of restructuring costs in addition to the expenses related to the Akzo Nobel integration. These expenses included $1.4 million related to the integration plan for our 2010 acquisition of Cross Canada and $0.4 million related to the integration of certain of our other 2010 and 2011 acquisitions. Our restructuring plan related to our acquisition of Cross Canada included the integration of the acquired business into our existing Canadian operations, as well as the transition of certain corporate functions to our corporate headquarters and our field support center in Nashville. This integration plan was completed in 2011. During the year ended December 31, 2011, we also incurred $3.2 million of acquisition related expenses, primarily related to our fourth quarter 2011 acquisition of ECP.
	In the second quarter of 2012, we initiated a restructuring plan to improve the operational efficiency of our refurbished product operations and to reduce the cost structure of the related refurbished bumper and wheel product lines. As part of the restructuring plan, we consolidated certain of our bumper and wheel refurbishing operations, with a focus on increasing output at the remaining operations to improve economies of scale. Restructuring costs included the write off of disposed assets, severance costs for termination of overlapping headcount, costs to move equipment and inventory, and excess facility costs. These costs are expensed as incurred, when the costs meet the criteria to be accrued, or, in the case of non-performing lease reserves, at the cease-use date of the facility. During the nine months ended September 30, 2012, we incurred $1.1 million related to this restructuring plan. These restructuring activities were substantially completed in 2012.	During the year ended December 31, 2010, we incurred $0.7 million of restructuring expenses related to our acquisition of Greenleaf on October 1, 2009. The restructuring plan included the integration of the acquired Greenleaf operations in our existing wholesale recycled operations, which resulted in the combination or closure of duplicate facilities and delivery routes. The restructuring activities related to the Greenleaf acquisition were substantially completed in 2010.

Retirement_Plans

Retirement Plans	12 Months Ended
	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]	'
Retirement Plans	'
	Retirement Plans
	401(k) Plan
	We sponsor a 401(k) defined contribution plan that covers substantially all of our eligible, full time U.S. employees. Contributions to the plan are made by both the employee and us. Our contributions are based on the level of employee contributions and are subject to certain vesting provisions based upon years of service. Expenses related to this plan totaled approximately $5.4 million, $5.3 million and $4.8 million during 2012, 2011 and 2010, respectively.
	Nonqualified Deferred Compensation Plan
	We also offer a nonqualified deferred compensation plan to eligible employees who, due to Internal Revenue Service ("IRS") guidelines, may not take full advantage of our 401(k) defined contribution plan. The plan allows participants to defer eligible compensation, subject to certain limitations. We will match 50% of the portion of the employee's contributions that does not exceed 6% of the employee's eligible deferrals. The deferred compensation, together with our matching contributions and accumulated earnings, is accrued and is payable after retirement or termination of employment, subject to vesting provisions. Participants may also elect to receive amounts deferred in a given year on any plan anniversary five or more years subsequent to the year of deferral. Our matching contributions vest over a four year period and totaled $0.9 million, $0.8 million and $0.7 million in 2012, 2011 and 2010, respectively, net of allowable transfers into our 401(k) defined contribution plan. Total deferred compensation liabilities were approximately $19.8 million and $14.1 million at December 31, 2012 and 2011, respectively.
	The nonqualified deferred compensation plan is funded under a trust agreement whereby we pay to the trust amounts deferred by employees, together with our match, with such amounts invested in life insurance policies carried to meet the obligations under the deferred compensation plan. We held 184 contracts as of both December 31, 2012 and 2011with a face value of $81.8 million and $80.6 million, respectively. The cash surrender value of these policies was $19.5 million and $13.4 million at December 31, 2012 and 2011, respectively.

Earnings_Per_Share

Earnings Per Share	9 Months Ended									12 Months Ended
	Sep. 30, 2013									Dec. 31, 2012
Earnings Per Share [Abstract]	'									'
Earnings Per Share	'									'
	Earnings Per Share									Earnings Per Share
	The following chart sets forth the computation of earnings per share (in thousands, except per share amounts):									Basic earnings per share are computed using the weighted average number of common shares outstanding during the period. Diluted earnings per share incorporate the incremental shares issuable upon the assumed exercise of stock options and the assumed vesting of RSUs and restricted stock. Certain of our stock options and restricted stock were excluded from the calculation of diluted earnings per share because they were antidilutive, but these equity instruments could be dilutive in the future.
										The following chart sets forth the computation of earnings per share (in thousands, except per share amounts):
		Three Months Ended				Nine Months Ended
		September 30,				September 30,					Year Ended December 31,
		2013		2012		2013		2012			2012			2011			2010
	Net income	$	73,445	$	54,048	$	233,759	$	199,037	Income from continuing operations	$	261,225		$	210,264		$	167,118
	Denominator for basic earnings per share—weighted average shares outstanding	300,223		296,437		299,213		295,338		Denominator for basic earnings per share—Weighted-average shares outstanding	295,810			292,252			286,542
	Effect of dilutive securities:									Effect of dilutive securities:
	RSUs	883		430		775		436		RSUs	479			182			—
	Stock options	3,564		4,241		3,765		4,398		Stock options	4,346			4,250			5,118
	Restricted stock	15		64		18		54		Restricted stock	58			66			54
	Denominator for diluted earnings per share—Adjusted weighted average shares outstanding	304,685		301,172		303,771		300,226		Denominator for diluted earnings per share—Adjusted weighted-average shares outstanding	300,693			296,750			291,714
	Earnings per share, basic	$	0.24	$	0.18	$	0.78	$	0.67	Basic earnings per share from continuing operations	$	0.88		$	0.72		$	0.58
	Earnings per share, diluted	$	0.24	$	0.18	$	0.77	$	0.66	Diluted earnings per share from continuing operations	$	0.87		$	0.71		$	0.57
	There were no employee stock-based compensation awards that would have had an antidilutive effect on the computation of diluted earnings per share for the three and nine months ended September 30, 2013 or September 30, 2012.									The following table sets forth the number of employee stock-based compensation awards outstanding but not included in the computation of diluted earnings per share because their effect would have been antidilutive (in thousands):
											Year Ended December 31,
											2012		2011			2010
										Antidilutive securities:
										Stock options	—		2,340			5,714
										Restricted stock	—		—			80

Income_Taxes

Income Taxes	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]	'	'
Income Taxes	'	'
	Income Taxes	Income Taxes
	At the end of each interim period, we estimate our annual effective tax rate and apply that rate to our interim earnings. We also record the tax impact of certain unusual or infrequently occurring items, including changes in judgment about valuation allowances and the effects of changes in tax laws or rates, in the interim period in which they occur.	The provision for income taxes consists of the following components (in thousands):
	The computation of the annual estimated effective tax rate at each interim period requires certain estimates and significant judgment including, but not limited to, the expected operating income for the year, projections of the proportion of income earned and taxed in state and foreign jurisdictions, permanent and temporary differences between book and taxable income, and the likelihood of recovering deferred tax assets generated in the current year. The accounting estimates used to compute the provision for income taxes may change as new events occur, additional information is obtained or as the tax environment changes.
	Our effective income tax rate for the nine months ended September 30, 2013 was 34.6% compared with 36.3% for the comparable prior year period. We continued to expand our international operations during the last quarter of 2012 and the first nine months of 2013 with both acquisition related and organic growth in our European segment as well as acquisitions in Canada, which contributed to a lower effective tax rate as a larger proportion of our pretax income was generated in lower rate jurisdictions. In the nine months ended September 30, 2013 and 2012, we recorded favorable discrete tax adjustments of $2.6 million and $1.2 million, respectively. Our favorable discrete tax adjustments during the nine months ended September 30, 2013 and 2012 included $1.6 million and $0.9 million, respectively, related to the revaluation of our net U.K. deferred tax liabilities as a result of reductions in the U.K. corporate income tax rate. In addition, we recorded a $0.9 million favorable deferred tax adjustment in the nine months ended September 30, 2013 resulting from changes in state tax legislation.
			Year Ended December 31,
			2012				2011				2010
		Current:
		Federal	$	110,825			$	97,887			$	75,009
		State	19,693				14,435				16,552
		Foreign	13,202				3,883				2,483
			$	143,720			$	116,205			$	94,044
		Deferred:
		Federal	$	5,824			$	8,376			$	8,928
		State	(647		)		919				598
		Foreign	(955		)		7				(563		)
			$	4,222			$	9,302			$	8,963
		Provision for income taxes	$	147,942			$	125,507			$	103,007
		Income taxes have been based on the following components of income from continuing operations before provision for income taxes (in thousands):
			Year Ended December 31,
			2012				2011				2010
		Domestic	$	348,150			$	319,305			$	264,438
		Foreign	61,017				16,466				5,687
			$	409,167			$	335,771			$	270,125
		The U.S. federal statutory rate is reconciled to the effective tax rate as follows:
			Year Ended December 31,
			2012			2011			2010
		U.S. federal statutory rate	35	%		35	%		35	%
		State income taxes, net of state credits and federal tax impact	3.1	%		3.1	%		3.4	%
		Impact of international operations	(2.3	)%		(0.8	)%		(0.3	)%
		Non-deductible expenses	0.8	%		0.7	%		0.3	%
		Federal production incentives and credits	(0.3	)%		(0.4	)%		(0.2	)%
		Revaluation of deferred taxes	(0.3	)%		—	%		(0.5	)%
		Other, net	0.2	%		(0.2	)%		0.4	%
		Effective tax rate	36.2	%		37.4	%		38.1	%
		Undistributed earnings of the Company's foreign subsidiaries amounted to approximately $74 million at December 31, 2012. Those earnings are considered to be indefinitely reinvested, and accordingly no provision for U.S. income taxes has been
		provided thereon. Upon repatriation of those earnings, in the form of dividends or otherwise, the Company would be subject to both U.S. income taxes (subject to adjustment for foreign tax credits) and potential withholding taxes payable to the various foreign countries. Determination of the amount of unrecognized deferred US income tax liability is not practicable due to the complexities associated with its hypothetical calculation; however, unrecognized foreign tax credits would be available to reduce materially any U.S. liability.
		The greater impact of international operations in 2012 compared to 2011 is primarily a result of our expanding international operations as a larger proportion of our pretax income was generated in lower rate jurisdictions.
		The significant components of our deferred tax assets and liabilities are as follows (in thousands):
			December 31,
			2012				2011
		Deferred Tax Assets:
		Inventory	$	29,523			$	22,267
		Accrued expenses and reserves	27,361				18,357
		Accounts receivable	10,037				10,860
		Stock-based compensation	9,442				8,945
		Qualified and nonqualified retirement plans	7,476				5,157
		Net operating loss carryforwards	4,451				4,722
		Interest rate swaps	5,461				3,679
		Other	4,711				8,621
			98,462				82,608
		Less valuation allowance	(1,631		)		(1,911		)
		Total deferred tax assets	$	96,831			$	80,697
		Deferred Tax Liabilities:
		Goodwill and other intangible assets	$	64,704			$	46,373
		Property and equipment	48,994				44,535
		Trade name	30,336				32,592
		Other	1,428				1,864
		Total deferred tax liabilities	$	145,462			$	125,364
		Net deferred tax liability	$	(48,631	)		$	(44,667	)
		Deferred tax assets and liabilities are reflected on our Consolidated Balance Sheets as follows (in thousands):
			December 31,
			2012				2011
		Current deferred tax assets	$	53,485			$	45,690
	Noncurrent deferred tax assets	164				—
	Current deferred tax liabilities	5				1,561
	Noncurrent deferred tax liabilities	102,275				88,796
	Our noncurrent deferred tax assets and current deferred tax liabilities are included in Other Assets and Other Current Liabilities, respectively, on our Consolidated Balance Sheets.
	We had net operating loss carryforwards for federal and certain of our state tax jurisdictions, the tax benefits of which total approximately $4.5 million and $4.7 million at December 31, 2012 and 2011, respectively. At both December 31, 2012 and 2011, we had tax credit carryforwards of $1.0 million related to certain of our state tax jurisdictions. As of December 31, 2012 and 2011, a valuation allowance of $1.6 million and $1.9 million, respectively, was recognized for a portion of the deferred tax assets related to net operating loss and tax credit carryforwards. The valuation allowance for net operating loss and tax credit carryforwards decreased by $0.3 million during the year ended December 31, 2012 due to current utilization of some of the underlying tax benefits as well as a change in judgment regarding the realization of the remaining carryforwards. The net operating loss carryforwards expire over the period from 2013 through 2030, while nearly all of the tax credit carryforwards have no expiration. Realization of these deferred tax assets is dependent on the generation of sufficient taxable income prior to the expiration dates. Based on historical and projected operating results, we believe that it is more likely than not that earnings will be sufficient to realize the deferred tax assets for which valuation allowances have not been provided. While we expect to realize the deferred tax assets, net of valuation allowances, changes in estimates of future taxable income or in tax laws may alter this expectation.
	A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows (in thousands):
		2012				2011				2010
	Balance at January 1	$	5,497			$	5,441			$	8,526
	Additions based on tax positions related to the current year	973				952				713
	Additions for tax positions of prior years	167				192				281
	Reductions for tax positions of prior years	(2,379		)		—				(86		)
	Reductions for tax positions of prior years—timing differences	—				—				(2,041		)
	Lapse of statutes of limitations	(998		)		(892		)		(1,952		)
	Settlements with taxing authorities	(957		)		(196		)		—
	Balance at December 31	$	2,303			$	5,497			$	5,441
	At December 31, 2012 and 2011, we had accumulated interest and penalties included in gross unrecognized tax benefits of $0.6 million and $1.2 million, respectively. During each of the years ended December 31, 2012, 2011, and 2010, $0.2 million of interest and penalties were recorded through the income tax provision, prior to any reversals for lapses in the statutes of limitations. We had deferred tax assets of $0.1 million and $0.2 million related to the accumulated interest balance as of December 31, 2012 and 2011, respectively. The amount of the unrecognized tax benefits, which if resolved favorably (in whole or in part) would reduce our effective tax rate, is approximately $1.6 million and $3.8 million at December 31, 2012 and 2011, respectively. The balance of unrecognized tax benefits at December 31, 2012 and 2011 also includes $0.7 million and $1.7 million, respectively, of tax benefits that, if recognized, would result in adjustments to deferred taxes.
	During the twelve months beginning January 1, 2013, it is reasonably possible that we will reduce gross unrecognized tax benefits by up to approximately $0.4 million, of which approximately $0.3 million would impact our effective tax rate, primarily as a result of the expiration of certain statutes of limitations.
	Tax years after 2009 remain subject to examination by the IRS. In the U.K., tax years through 2009 are no longer open to inquiry. For certain of our Canadian subsidiaries, certain tax years from 2008 to 2011 are currently under examination. Tax years from 2009 are subject to income tax examinations by various U.S. state and local jurisdictions. Adjustments from such examinations, if any, are not expected to have a material effect on our consolidated financial statements.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Loss)	9 Months Ended																			12 Months Ended
	Sep. 30, 2013																			Dec. 31, 2012
Equity [Abstract]	'																			'
Accumulated Other Comprehensive Income (Loss)	'																			'
	Accumulated Other Comprehensive Income																			Accumulated Other Comprehensive Income (Loss)
	Changes in Accumulated Other Comprehensive Income were as follows (in thousands):																			The components of Accumulated Other Comprehensive Income (Loss) are as follows (in thousands):
		Three Months Ended									Three Months Ended										Foreign			Unrealized (Loss)			Unrealized Gain			Accumulated
		30-Sep-13									30-Sep-12										Currency			Gain			(Loss)			Other
		Foreign			Unrealized  (Loss)			Accumulated			Foreign			Unrealized  (Loss)			Accumulated				Translation			on Interest Rate			on Pension Plan			Comprehensive
		Currency Translation			Gain			Other			Currency			Gain			Other							Swaps						(Loss) Income
					on Cash Flow Hedges			Comprehensive			Translation			on Cash Flow Hedges			Comprehensive			Balance at January 1, 2010	$	(876	)	$	(6,536	)	$	15		$	(7,397	)
								Income (Loss)									Income (Loss)
	Beginning balance	$	(11,334	)	$	(6,730	)	$	(18,064	)	$	265		$	(9,881	)	$	(9,616	)	Pretax income	3,078			3,230			—			6,308
	Pretax income (loss)	28,514			(15,315		)	13,199			10,182			(3,557		)	6,625			Income tax expense	—			(1,054		)	—			(1,054		)
	Income tax effect	—			5,647			5,647			—			1,259			1,259			Reversal of unrealized (gain) loss	—			10,377			(15		)	10,362
	Reclassification of unrealized loss	—			15,956			15,956			—			1,641			1,641			Reversal of deferred income taxes	—			(3,841		)	—			(3,841		)
	Reclassification of deferred income taxes	—			(5,849		)	(5,849		)	—			(585		)	(585		)	Balance at December 31, 2010	$	2,202		$	2,176		$	—		$	4,378
	Hedge ineffectiveness	—			293			293			—			—			—			Pretax loss	(4,273		)	(19,391		)	—			(23,664		)
	Income tax effect	—			(107		)	(107		)	—			—			—			Income tax benefit	—			6,847			—			6,847
	Ending balance	$	17,180		$	(6,105	)	$	11,075		$	10,447		$	(11,123	)	$	(676	)	Reversal of unrealized loss	—			5,641			—			5,641
																				Reversal of deferred income taxes	—			(2,019		)	—			(2,019		)
																				Hedge ineffectiveness	—			(225		)	—			(225		)
		Nine Months Ended									Nine Months Ended
		30-Sep-13									30-Sep-12									Income tax benefit	—			81			—			81
		Foreign			Unrealized  (Loss)			Accumulated			Foreign			Unrealized  (Loss)			Accumulated
		Currency			Gain			Other			Currency			Gain			Other			Balance at December 31, 2011	$	(2,071	)	$	(6,890	)	$	—		$	(8,961	)
		Translation			on Cash Flow Hedges			Comprehensive			Translation			on Cash Flow Hedges			Comprehensive
								Income (Loss)									Income (Loss)			Pretax income (loss)	12,921			(11,313		)	—			1,608
	Beginning balance	$	10,850		$	(10,091	)	$	759		$	(2,071	)	$	(6,890	)	$	(8,961	)
																				Income tax benefit	—			3,962			—			3,962
	Pretax income (loss)	6,330			(14,170		)	(7,840		)	12,518			(11,266		)	1,252
																				Reversal of unrealized loss	—			6,439			—			6,439
	Income tax effect	—			5,305			5,305			—			3,981			3,981
																				Reversal of deferred income taxes	—			(2,289		)	—			(2,289		)
	Reclassification of unrealized loss	—			19,771			19,771			—			4,753			4,753
																				Balance at December 31, 2012	$	10,850		$	(10,091	)	$	—		$	759
	Reclassification of deferred income taxes	—			(7,211		)	(7,211		)	—			(1,701		)	(1,701		)
	Hedge ineffectiveness	—			460			460			—			—			—
	Income tax effect	—			(169		)	(169		)	—			—			—
	Ending balance	$	17,180		$	(6,105	)	$	11,075		$	10,447		$	(11,123	)	$	(676	)
	Unrealized losses on our foreign currency forward contracts totaling $14.4 million and $15.1 million were reclassified to other expense in our Unaudited Consolidated Condensed Statements of Income during the three and nine months ended September 30, 2013, respectively. These losses offset the remeasurement of certain of our intercompany balances as discussed in Note 5, "Derivative Instruments and Hedging Activities." The remaining reclassification of unrealized losses related to our interest rate swap contracts and was recorded to interest expense in our Unaudited Consolidated Condensed Statements of Income during the three and nine months ended September 30, 2013 and 2012. The deferred income taxes related to our cash flow hedges were reclassified from Accumulated Other Comprehensive Income to income tax expense during the three and nine months ended September 30, 2013 and 2012.

Segment_and_Geographic_Informa

Segment and Geographic Information	9 Months Ended									12 Months Ended
	Sep. 30, 2013									Dec. 31, 2012
Segment Reporting [Abstract]	'									'
Segment and Geographic Information	'									'
	Segment and Geographic Information									Segment and Geographic Information
	We have three operating segments: Wholesale – North America; Wholesale – Europe; and Self Service. Our operations in North America, which include our Wholesale – North America and Self Service operating segments, are aggregated into one reportable segment because they possess similar economic characteristics and have common products and services, customers, and methods of distribution. Our Wholesale – Europe operating segment, which includes Sator, is presented as a separate reportable segment. Therefore, we present our reportable segments on a geographic basis.									We have three operating segments: Wholesale – North America; Wholesale – Europe; and Self Service. Our operations in North America, which include our Wholesale – North America and Self Service operating segments, are aggregated into one reportable segment because they possess similar economic characteristics and have common products and services, customers, and methods of distribution. Our Wholesale – Europe operating segment, formed with our acquisition of ECP effective October 1, 2011, marks our entry into the European automotive aftermarket business, and is presented as a separate reportable segment. Although the Wholesale – Europe operating segment shares many of the characteristics of our North American operations, including types of products offered, distribution methods, and procurement, we have provided separate financial information as we believe this data would be beneficial to users in understanding our results. Therefore, we present our reportable segments on a geographic basis.
	The following table presents our financial performance, including revenue, earnings before interest, taxes, depreciation and amortization ("EBITDA"), and depreciation and amortization by reportable segment for the periods indicated (in thousands):									The following table presents our financial performance, including revenue, earnings before interest, taxes, depreciation and amortization (“EBITDA”), and depreciation and amortization by reportable segment for the periods indicated (in thousands):
		Three Months Ended				Nine Months Ended					Year Ended December 31,
		September 30,				September 30,					2012		2011		2010
		2013		2012		2013		2012		Revenue
	Revenue									North America	$	3,426,858	$	3,131,376	$	2,469,881
	North America	$	928,307	$	835,324	$	2,865,613	$	2,547,743
										Europe	696,072		138,486		—
	Europe	369,787		181,383		880,226		507,272
										Total revenue	$	4,122,930	$	3,269,862	$	2,469,881
	Total revenue	$	1,298,094	$	1,016,707	$	3,745,839	$	3,055,015
										EBITDA
	EBITDA									North America	$	440,448	$	405,924	$	339,869
	North America	$	108,314	$	89,265	$	362,281	$	331,140
										Europe	70,099		12,144		—
	Europe	38,088		20,079		95,920		55,669
										Total EBITDA	$	510,547	$	418,068	$	339,869
	Total EBITDA	$	146,402	$	109,344	$	458,201	$	386,809
										Depreciation and Amortization
	Depreciation and Amortization									North America	$	59,132	$	52,481	$	41,428
	North America	$	16,417	$	14,830	$	48,555	$	43,603
										Europe	11,033		2,024		—
	Europe	5,740		3,298		13,313		7,971
										Total depreciation and amortization	$	70,165	$	54,505	$	41,428
	Total depreciation and amortization	$	22,157	$	18,128	$	61,868	$	51,574
										EBITDA during 2012 for our North American segment is inclusive of gains of $17.9 million resulting from lawsuit settlements with certain of our aftermarket product suppliers as discussed in Note 8, "Commitments and Contingencies." EBITDA for our North America segment also includes net gains of $2.0 million in each of the years ended December 31, 2012 and 2011 from the change in fair value of contingent consideration liabilities related to certain of our acquisitions. Included within EBITDA of our European segment are losses of $3.6 million and $0.6 million for the years ended December 31, 2012 and 2011, respectively, for the change in fair value of contingent consideration liabilities related to our ECP acquisition. See Note 7, "Fair Value Measurements," for further information on these changes in fair value of the contingent consideration obligations recorded in earnings during the periods.
	EBITDA for our North American segment included gains of $0.5 million and $17.2 million during the three and nine months ended September 30, 2012 resulting from lawsuit settlements with certain of our aftermarket product suppliers as discussed in Note 7, "Commitments and Contingencies." Included within EBITDA of our European segment are losses of $0.8 million and $2.1 million during the three months ended September 30, 2013 and 2012, respectively, from the change in fair value of contingent consideration liabilities, primarily related to our 2011 ECP acquisition. During the nine month periods ended September 30, 2013 and 2012, our European segment recognized losses of $2.7 million and $1.9 million, respectively, related to the remeasurement of these contingent consideration liabilities. See Note 6, "Fair Value Measurements" for further information on our contingent consideration liabilities. For the three and nine months ended September 30, 2013, EBITDA for our European segment also included restructuring and acquisition related expenses of $1.6 million and $5.3 million, respectively, primarily related to our acquisitions of Sator and five automotive paint distribution businesses in the U.K.									The table below provides a reconciliation from EBITDA to Income from Continuing Operations (in thousands):
	The table below provides a reconciliation from EBITDA to Net Income (in thousands):
											Year Ended December 31,
		Three Months Ended				Nine Months Ended					2012		2011		2010
		September 30,				September 30,				EBITDA	$	510,547	$	418,068	$	339,869
		2013		2012		2013		2012
	EBITDA	$	146,402	$	109,344	$	458,201	$	386,809	Depreciation and amortization	70,165		54,505		41,428
	Depreciation and amortization	22,157		18,128		61,868		51,574		Interest expense, net	31,215		22,447		28,316
	Interest expense, net	15,200		7,964		36,287		22,687		Loss on debt extinguishment	—		5,345		—
	Loss on debt extinguishment	—		—		2,795		—		Provision for income taxes	147,942		125,507		103,007
	Provision for income taxes	35,600		29,204		123,492		113,511		Income from continuing operations	$	261,225	$	210,264	$	167,118
	Net income	$	73,445	$	54,048	$	233,759	$	199,037	The key measure of segment profit or loss reviewed by our chief operating decision maker, who is our Chief Executive Officer, is EBITDA. Segment EBITDA includes revenue and expenses that are controllable by the segment. Corporate and administrative expenses are allocated to the segments based on usage, with shared expenses apportioned based on the segment’s percentage of consolidated revenue. Segment EBITDA excludes depreciation, amortization, interest (including loss on debt extinguishment) and taxes. Loss on debt extinguishment is considered a component of interest in calculating EBITDA, as the write-off of debt issuance costs is similar to the treatment of debt issuance cost amortization.
										The following table presents capital expenditures, which includes additions to property and equipment, by reportable segment (in thousands):
	The key measure of segment profit or loss reviewed by our chief operating decision maker, who is our Chief Executive Officer, is EBITDA. Segment EBITDA includes revenue and expenses that are controllable by the segment. Corporate and administrative expenses are allocated to the segments based on usage, with shared expenses apportioned based on the segment’s percentage of consolidated revenue. Segment EBITDA excludes depreciation, amortization, interest and taxes. Loss on debt extinguishment is considered a component of interest in calculating EBITDA, as the write-off of debt issuance costs is similar to the treatment of debt issuance cost amortization.
	The following table presents capital expenditures, which includes additions to property and equipment, by reportable segment (in thousands):
											Year Ended December 31,
											2012		2011		2010
		Three Months Ended				Nine Months Ended				Capital Expenditures
		September 30,				September 30,				North America	$	73,331	$	84,856	$	61,438
		2013		2012		2013		2012
	Capital Expenditures									Europe	14,924		1,560		—
	North America	$	14,960	$	15,015	$	48,662	$	49,521
											$	88,255	$	86,416	$	61,438
	Europe	6,015		4,006		12,464		11,115
										The following table presents assets by reportable segment (in thousands):
		$	20,975	$	19,021	$	61,126	$	60,636
	The following table presents assets by reportable segment (in thousands):										December 31,
											2012		2011		2010
										Receivables, net
		September 30,		December 31,						North America	$	241,627	$	230,871	$	191,085
		2013		2012
	Receivables, net									Europe	70,181		50,893		—
	North America	$	260,413	$	241,627
										Total receivables, net	311,808		281,764		191,085
	Europe	178,387		70,181
										Inventory
Total receivables, net	438,800		311,808						North America	750,565		636,145		492,688
Inventory									Europe	150,238		100,701		—
North America	725,213		750,565
									Total inventory	900,803		736,846		492,688
Europe	292,956		150,238
									Property and Equipment, net
Total inventory	1,018,169		900,803						North America	434,010		380,282		331,312
Property and Equipment, net									Europe	60,369		43,816		—
North America	441,940		434,010
									Total property and equipment, net	494,379		424,098		331,312
Europe	89,957		60,369
									Other unallocated assets	2,016,466		1,756,996		1,284,424
Total property and equipment, net	531,897		494,379
									Total assets	$	3,723,456	$	3,199,704	$	2,299,509
Other unallocated assets	2,372,193		2,016,466
									We report net trade receivables, inventories, and net property and equipment by segment as that information is used by the chief operating decision maker in assessing segment performance. These assets provide a measure for the operating capital employed in each segment. Unallocated assets include cash, prepaid and other current and noncurrent assets, goodwill, intangibles and income taxes.
Total assets	$	4,361,059	$	3,723,456					Our operations are primarily conducted in the U.S. Our European operations, which we started with the acquisition of ECP in the fourth quarter of 2011, are located in the U.K. Our operations in other countries include recycled and aftermarket operations in Canada, engine remanufacturing and bumper refurbishing operations in Mexico, an aftermarket parts distribution facility in Taiwan, and other alternative parts operations in Guatemala and Costa Rica.
									The following table sets forth our revenue by geographic area (in thousands):
We report net trade receivables, inventories, and net property and equipment by segment as that information is used by the chief operating decision maker in assessing segment performance. These assets provide a measure for the operating capital employed in each segment. Unallocated assets include cash, prepaid and other current and noncurrent assets, goodwill, intangibles and income taxes.
Our operations are primarily conducted in the U.S. Our European operations are located in the U.K., the Netherlands, Belgium and France. Our operations in other countries include recycled and aftermarket operations in Canada, engine remanufacturing and bumper refurbishing operations in Mexico, an aftermarket parts freight consolidation warehouse in Taiwan, and other alternative parts operations in Guatemala and Costa Rica. Our revenue is attributed to geographic area based on the location of the selling operation.
The following table sets forth our revenue by geographic area (in thousands):										Year Ended December 31,
										2012		2011		2010
									Revenue
	Three Months Ended				Nine Months Ended				United States	$	3,209,024	$	2,952,620	$	2,366,224
	September 30,				September 30,
	2013		2012		2013		2012		United Kingdom	696,072		138,486		—
Revenue
United States	$	868,052	$	784,270	$	2,672,545	$	2,394,581	Other countries	217,834		178,756		103,657
United Kingdom	266,384		181,383		708,089		507,272			$	4,122,930	$	3,269,862	$	2,469,881
Other countries	163,658		51,054		365,205		153,162		The following table sets forth our tangible long-lived assets by geographic area (in thousands):
	$	1,298,094	$	1,016,707	$	3,745,839	$	3,055,015
										December 31,
The following table sets forth our tangible long-lived assets by geographic area (in thousands):										2012		2011
									Long-lived Assets
									United States	$	408,244	$	360,961
	September 30,		December 31,
	2013		2012						United Kingdom	60,369		43,816
Long-lived Assets
United States	$	411,957	$	408,244					Other countries	25,766		19,321
United Kingdom	69,309		60,369							$	494,379	$	424,098
Other countries	50,631		25,766						The following table sets forth our revenue by product category (in thousands):
	$	531,897	$	494,379
										Year Ended December 31,
The following table sets forth our revenue by product category (in thousands):										2012		2011		2010
									Aftermarket, other new and refurbished products	$	2,286,853	$	1,634,003	$	1,236,806
	Three Months Ended				Nine Months Ended				Recycled, remanufactured and related products and services	1,277,023		1,115,088		888,320
	September 30,				September 30,
	2013		2012		2013		2012		Other	559,054		520,771		344,755
Aftermarket, other new and refurbished products	$	793,925	$	562,750	$	2,199,009	$	1,676,006
										$	4,122,930	$	3,269,862	$	2,469,881
Recycled, remanufactured and related products and services	349,411		317,877		1,060,681		967,250
									All of the product categories include revenue from our North American reportable segment, while our European segment, which is composed of ECP, an automotive aftermarket products distributor, currently generates revenue only from the sale of aftermarket products. Revenue from other sources includes scrap sales, bulk sales to mechanical remanufacturers (including cores) and sales of aluminum ingots and sows from our furnace operations. With our acquisition of a precious metals refining and reclamation business in the second quarter of 2012, revenue from other sources also includes the sales of precious metals harvested from various components, including certain of our salvage vehicle parts.
Other	154,758		136,080		486,149		411,759
	$	1,298,094	$	1,016,707	$	3,745,839	$	3,055,015
Our North American reportable segment generates revenue from all of our product categories, while our European segment generates revenue primarily from the sale of aftermarket products. Revenue from other sources includes scrap sales, bulk sales to mechanical remanufacturers (including cores) and sales of aluminum ingots and sows from our furnace operations.

Selected_Quarterly_Data

Selected Quarterly Data	12 Months Ended
	Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]	'
Selected Quarterly Data	'
	Selected Quarterly Data (unaudited)
	The following table represents unaudited selected quarterly financial data for the two years ended December 31, 2012. Beginning with quarter ended December 31, 2011, the selected quarterly financial data includes the results of ECP, which was acquired effective October 1, 2011. The operating results for any quarter are not necessarily indicative of the results for any future period.
		Quarter Ended
	(In thousands, except per share data)	Mar. 31		Jun. 30		Sep. 30		Dec. 31
	2011
	Revenue	$	786,648	$	759,684	$	783,898	$	939,632
	Gross margin(1)	343,646		322,236		334,322		391,789
	Operating income(1)	107,371		78,486		85,488		90,138
	Net income(2)	58,182		46,706		49,231		56,145
	Basic earnings per share(3)	$	0.2	$	0.16	$	0.17	$	0.19
	Diluted earnings per share(3)	$	0.2	$	0.16	$	0.17	$	0.19
		Quarter Ended
	(In thousands, except per share data)	Mar. 31		Jun. 30		Sep. 30		Dec. 31
	2012
	Revenue	$	1,031,777	$	1,006,531	$	1,016,707	$	1,067,915
	Gross margin(1)	447,383		421,931		409,705		445,121
	Operating income(1)	133,608		108,567		91,434		104,344
	Net income(2)	80,991		63,998		54,048		62,188
	Basic earnings per share(3)	$	0.28	$	0.22	$	0.18	$	0.21
	Diluted earnings per share(3)	$	0.27	$	0.21	$	0.18	$	0.21
	-1	Gross margin and operating income during the quarters ended March 31, 2012, June 30, 2012, September 30, 2012 and December 31, 2012 include gains of $8.3 million, $8.4 million, $0.5 million and $0.7 million, respectively, resulting from lawsuit settlements with certain of our aftermarket product suppliers as discussed in Note 8, "Commitments and Contingencies."
	-2	Net income during the quarters ended June 30, 2011 and December 31, 2011 includes a gain of $1.6 million and a loss of $0.2 million, respectively, for changes in fair value of our contingent consideration liabilities. The quarters ended March 31, 2012 and December 31, 2012 include gains for changes in fair value of our contingent consideration liabilities of $1.3 million and $0.2 million, respectively, while the quarters ended June 30, 2012 and September 30, 2012 include losses of $1.2 million and $1.9 million, respectively. See Note 7, "Fair Value Measurements," for further information on these changes in fair value of the contingent consideration obligations recorded in earnings during the periods.
	-3	The sum of the quarters may not equal the total of the respective year's earnings per share on either a basic or diluted basis due to changes in weighted average shares outstanding throughout the year.

Condensed_Consolidating_Financ

Condensed Consolidating Financial Information Condensed Consolidating Financial Information	9 Months Ended																12 Months Ended
	Sep. 30, 2013																Dec. 31, 2012
Condensed Consolidating Financial Information [Abstract]	'																'
Condensed Consolidating Financial Information	'																'
	Condensed Consolidating Financial Information																Condensed Consolidating Financial Information
	LKQ Corporation (the "Parent") and certain of its 100% owned subsidiaries (the "Guarantors") have fully and unconditionally guaranteed, jointly and severally, the $600 million aggregate principal amount of the Company's Notes due on May 15, 2023. A Guarantor's guarantee will be unconditionally and automatically released and discharged upon the occurrence of any of the following events: (i) a transfer (including as a result of consolidation or merger) by the Guarantor to any person that is not a Guarantor of all or substantially all assets and properties of such Guarantor, provided the Guarantor is also released from its obligations with respect to indebtedness under the Credit Agreement or other indebtedness giving rise to the guarantee obligation; (ii) a transfer (including as a result of consolidation or merger) to any person that is not a Guarantor of the equity interests of a Guarantor or issuance by a Guarantor of its equity interests such that the Guarantor ceases to be a subsidiary, as defined in the Indenture, provided the Guarantor is also released from its obligations with respect to indebtedness under the Credit Agreement or other indebtedness giving rise to the guarantee obligation; (iii) the release of the Guarantor from all of its obligations with respect to indebtedness under the Credit Agreement or any other indebtedness giving rise to the guarantee obligation; and (iv) upon legal defeasance, covenant defeasance or satisfaction and discharge of the Indenture, as defined in the Indenture.																On May 9, 2013, we completed an offering of $600 million aggregate principal amount of senior notes due on May 15, 2023 (the "Notes") in a private placement conducted pursuant to Rule 144A and Regulation S under the Securities Act of 1933. The Notes bear interest at a rate of 4.75% per year from the date of original issuance or from the most recent payment date on which interest has been paid or provided for. Interest on the Notes is payable in arrears on May 15 and November 15 of each year, beginning on November 15, 2013.
	Presented below are the condensed consolidating financial statements of the Parent, the Guarantors, the non-guarantor subsidiaries (the "Non-Guarantors"), and the elimination entries necessary to present the Company's financial statements on a consolidated basis as required by Rule 3-10 of Regulation S-X of the Securities Exchange Act of 1934, as amended, resulting from the guarantees of the Notes. Investments in consolidated subsidiaries have been presented under the equity method of accounting. The principal elimination entries eliminate investments in subsidiaries, intercompany balances, and intercompany revenues and expenses. The condensed consolidating financial statements below have been prepared from the Company's financial information on the same basis of accounting as the consolidated financial statements, and may not necessarily be indicative of the financial position, results of operations or cash flows had the Parent, Guarantors and Non-Guarantors operated as independent entities.																LKQ Corporation (the "Parent") and certain of its 100% owned subsidiaries (the "Guarantors") have fully and unconditionally guaranteed, jointly and severally, the Notes. A Guarantor's guarantee will be unconditionally and automatically released and discharged upon the occurrence of any of the following events: (i) a transfer (including as a result of consolidation or merger) by the Guarantor to any person that is not a Guarantor of all or substantially all assets and properties of such Guarantor, provided the Guarantor is also released from its obligations with respect to indebtedness under the Credit Agreement or other indebtedness giving rise to the guarantee obligation; (ii) a transfer (including as a result of consolidation or merger) to any person that is not a Guarantor of the equity interests of a Guarantor or issuance by a Guarantor of its equity interests such that the Guarantor ceases to be a subsidiary, as defined in the Indenture, provided the Guarantor is also released from its obligations with respect to indebtedness under the Credit Agreement or other indebtedness giving rise to the guarantee obligation; (iii) the release of the Guarantor from all of its obligations with respect to indebtedness under the Credit Agreement or any other indebtedness giving rise to the guarantee obligation; and (iv) upon legal defeasance, covenant defeasance or satisfaction and discharge of the Indenture, as defined in the Indenture.
	LKQ CORPORATION AND SUBSIDIARIES																Presented below are the condensed consolidating financial statements of the Parent, the Guarantors, the non-guarantor subsidiaries (the "Non-Guarantors"), and the elimination entries necessary to present the Company's financial statements on a consolidated basis as required by Rule 3-10 of Regulation S-X of the Securities Exchange Act of 1934, as amended, resulting from the guarantees of the Notes. Investments in consolidated subsidiaries have been presented under the equity method of accounting. The principal elimination entries eliminate investments in subsidiaries, intercompany balances, and intercompany revenues and expenses. The condensed consolidating financial statements below have been prepared from the Company's financial information on the same basis of accounting as the consolidated financial statements, and may not necessarily be indicative of the financial position, results of operations or cash flows had the Parent, Guarantors and Non-Guarantors operated as independent entities.
	Condensed Consolidating Balance Sheets																LKQ CORPORATION AND SUBSIDIARIES
	(In thousands)																Condensed Consolidating Balance Sheets
																	(In thousands)
		September 30, 2013																31-Dec-12
		Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated				Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
	Assets																Assets
	Current Assets:																Current Assets:
	Cash and equivalents	$	35,966		$	12,218		$	59,153		$	—		$	107,337		Cash and equivalents	$	18,396		$	18,253		$	23,121		$	—		$	59,770
	Receivables, net	929			123,256			314,615			—			438,800			Receivables, net	—			94,435			217,373			—			311,808
	Intercompany receivables, net	4,719			—			1,236			(5,955		)	—			Intercompany receivables, net	1,781			5,970			—			(7,751		)	—
	Inventory	—			666,819			351,350			—			1,018,169			Inventory	—			690,365			210,438			—			900,803
	Deferred income taxes	4,774			45,643			2,712			—			53,129			Deferred income taxes	4,778			45,255			3,452			—			53,485
	Prepaid income taxes	11,444			—			2,381			—			13,825			Prepaid income taxes	26,538			—			2,999			—			29,537
	Prepaid expenses and other current assets	361			23,291			20,739			—			44,391			Prepaid expenses and other current assets	1,065			16,608			11,275			—			28,948
	Total Current Assets	58,193			871,227			752,186			(5,955		)	1,675,651			Total Current Assets	52,558			870,886			468,658			(7,751		)	1,384,351
	Property and Equipment, net	737			412,699			118,461			—			531,897			Property and Equipment, net	970			408,944			84,465			—			494,379
	Intangible Assets:																Intangible Assets:
	Goodwill	—			1,238,664			682,252			—			1,920,916			Goodwill	—			1,226,718			463,566			—			1,690,284
	Other intangibles, net	—			57,398			97,031			—			154,429			Other intangibles, net	—			61,815			44,900			—			106,715
	Investment in Subsidiaries	2,303,747			254,421			—			(2,558,168		)	—			Investment in Subsidiaries	1,923,997			142,334			—			(2,066,331		)	—
	Intercompany Notes Receivable	953,682			94,334			—			(1,048,016		)	—			Intercompany Notes Receivable	711,624			39,239			—			(750,863		)	—
	Other Assets	55,236			20,055			15,453			(12,578		)	78,166			Other Assets	41,692			17,830			3,528			(15,323		)	47,727
	Total Assets	$	3,371,595		$	2,948,798		$	1,665,383		$	(3,624,717	)	$	4,361,059		Total Assets	$	2,730,841		$	2,767,766		$	1,065,117		$	(2,840,268	)	$	3,723,456
	Liabilities and Stockholders’ Equity																Liabilities and Stockholders’ Equity
	Current Liabilities:																Current Liabilities:
	Accounts payable	$	413		$	93,076		$	191,411		$	—		$	284,900		Accounts payable	$	52		$	97,678		$	121,605		$	—		$	219,335
	Intercompany payables, net	—			1,236			4,719			(5,955		)	—			Intercompany payables, net	—			—			7,751			(7,751		)	—
	Accrued expenses:																Accrued expenses:
	Accrued payroll-related liabilities	4,636			38,172			23,558			—			66,366			Accrued payroll-related liabilities	3,731			25,697			14,972			—			44,400
	Other accrued expenses	27,813			57,245			61,583			—			146,641			Other accrued expenses	2,258			48,805			39,359			—			90,422
	Income taxes payable	—			—			16,473			—			16,473			Income taxes payable	—			—			2,748			—			2,748
	Contingent consideration liabilities	—			1,875			47,400			—			49,275			Contingent consideration liabilities	—			1,518			40,737			—			42,255
	Other current liabilities	286			14,339			3,110			—			17,735			Other current liabilities	286			16,241			541			—			17,068
	Current portion of long-term obligations	24,421			3,906			32,796			—			61,123			Current portion of long-term obligations	32,300			9,940			29,476			—			71,716
	Total Current Liabilities	57,569			209,849			381,050			(5,955		)	642,513			Total Current Liabilities	38,627			199,879			257,189			(7,751		)	487,944
	Long-Term Obligations, Excluding Current Portion	1,021,876			5,925			223,131			—			1,250,932			Long-Term Obligations, Excluding Current Portion	691,670			7,549			347,543			—			1,046,762
	Intercompany Notes Payable	—			611,004			437,012			(1,048,016		)	—			Intercompany Notes Payable	—			681,275			69,588			(750,863		)	—
	Deferred Income Taxes	—			101,698			29,573			(12,578		)	118,693			Deferred Income Taxes	—			102,702			14,896			(15,323		)	102,275
	Contingent Consideration Liabilities	—			733			4,477			—			5,210			Contingent Consideration Liabilities	—			2,500			45,254			—			47,754
	Other Noncurrent Liabilities	38,044			44,893			6,668			—			89,605			Other Noncurrent Liabilities	36,450			35,383			2,794			—			74,627
	Stockholders’ Equity	2,254,106			1,974,696			583,472			(2,558,168		)	2,254,106			Stockholders’ Equity	1,964,094			1,738,478			327,853			(2,066,331		)	1,964,094
	Total Liabilities and Stockholders’ Equity	$	3,371,595		$	2,948,798		$	1,665,383		$	(3,624,717	)	$	4,361,059		Total Liabilities and Stockholders’ Equity	$	2,730,841		$	2,767,766		$	1,065,117		$	(2,840,268	)	$	3,723,456
																	LKQ CORPORATION AND SUBSIDIARIES
	LKQ CORPORATION AND SUBSIDIARIES																Condensed Consolidating Balance Sheets
	Condensed Consolidating Balance Sheets																(In thousands)
	(In thousands)
																		31-Dec-11
		December 31, 2012																Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
		Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated			Assets
	Assets																Current Assets:
	Current Assets:																Cash and equivalents	$	9,908		$	17,433		$	20,906		$	—		$	48,247
	Cash and equivalents	$	18,396		$	18,253		$	23,121		$	—		$	59,770
																	Receivables, net	—			214,805			66,959			—			281,764
	Receivables, net	—			94,435			217,373			—			311,808
																	Intercompany receivables, net	2,416			—			4,966			(7,382		)	—
	Intercompany receivables, net	1,781			5,970			—			(7,751		)	—
																	Inventory	—			595,223			141,623			—			736,846
	Inventory	—			690,365			210,438			—			900,803
																	Deferred income taxes	3,049			40,068			2,573			—			45,690
Deferred income taxes	4,778			45,255			3,452			—			53,485
																Prepaid income taxes	15,989			—			1,608			—			17,597
Prepaid income taxes	26,538			—			2,999			—			29,537
																Prepaid expenses and other current assets	482			14,257			4,852			—			19,591
Prepaid expenses and other current assets	1,065			16,608			11,275			—			28,948
																Total Current Assets	31,844			881,786			243,487			(7,382		)	1,149,735
Total Current Assets	52,558			870,886			468,658			(7,751		)	1,384,351
																Property and Equipment, net	1,097			359,815			63,186			—			424,098
Property and Equipment, net	970			408,944			84,465			—			494,379
																Intangible Assets:
Intangible Assets:																Goodwill	—			1,080,358			395,705			—			1,476,063
Goodwill	—			1,226,718			463,566			—			1,690,284
																Other intangibles, net	—			68,133			40,777			—			108,910
Other intangibles, net	—			61,815			44,900			—			106,715
																Investment in Subsidiaries	1,602,727			124,578			—			(1,727,305		)	—
Investment in Subsidiaries	1,923,997			142,334			—			(2,066,331		)	—
																Intercompany Notes Receivable	781,338			—			—			(781,338		)	—
Intercompany Notes Receivable	711,624			39,239			—			(750,863		)	—
																Other Assets	35,283			15,771			2,324			(12,480		)	40,898
Other Assets	41,692			17,830			3,528			(15,323		)	47,727
																Total Assets	$	2,452,289		$	2,530,441		$	745,479		$	(2,528,505	)	$	3,199,704
Total Assets	$	2,730,841		$	2,767,766		$	1,065,117		$	(2,840,268	)	$	3,723,456
																Liabilities and Stockholders’ Equity
Liabilities and Stockholders’ Equity																Current Liabilities:
Current Liabilities:																Accounts payable	$	241		$	92,218		$	118,416		$	—		$	210,875
Accounts payable	$	52		$	97,678		$	121,605		$	—		$	219,335
																Intercompany payables, net	—			4,966			2,416			(7,382		)	—
Intercompany payables, net	—			—			7,751			(7,751		)	—
																Accrued expenses:
Accrued expenses:																Accrued payroll-related liabilities	11,076			30,520			11,660			—			53,256
Accrued payroll-related liabilities	3,731			25,697			14,972			—			44,400
																Other accrued expenses	2,077			50,399			25,293			—			77,769
Other accrued expenses	2,258			48,805			39,359			—			90,422
																Income taxes payable	914			—			6,348			—			7,262
Income taxes payable	—			—			2,748			—			2,748
																Contingent consideration liabilities	—			600			—			—			600
Contingent consideration liabilities	—			1,518			40,737			—			42,255
																Other current liabilities	305			11,723			6,379			—			18,407
Other current liabilities	286			16,241			541			—			17,068
																Current portion of long-term obligations	16,080			2,253			11,191			—			29,524
Current portion of long-term obligations	32,300			9,940			29,476			—			71,716
																Total Current Liabilities	30,693			192,679			181,703			(7,382		)	397,693
Total Current Liabilities	38,627			199,879			257,189			(7,751		)	487,944
																Long-Term Obligations, Excluding Current Portion	749,125			6,498			170,929			—			926,552
Long-Term Obligations, Excluding Current Portion	691,670			7,549			347,543			—			1,046,762
																Intercompany Notes Payable	—			750,545			30,793			(781,338		)	—
Intercompany Notes Payable	—			681,275			69,588			(750,863		)	—
																Deferred Income Taxes	—			89,497			11,779			(12,480		)	88,796
Deferred Income Taxes	—			102,702			14,896			(15,323		)	102,275
																Contingent Consideration Liabilities	—			3,111			78,671			—			81,782
Contingent Consideration Liabilities	—			2,500			45,254			—			47,754
																Other Noncurrent Liabilities	28,386			30,404			2,006			—			60,796
Other Noncurrent Liabilities	36,450			35,383			2,794			—			74,627
																Stockholders’ Equity	1,644,085			1,457,707			269,598			(1,727,305		)	1,644,085
Stockholders’ Equity	1,964,094			1,738,478			327,853			(2,066,331		)	1,964,094
																Total Liabilities and Stockholders’ Equity	$	2,452,289		$	2,530,441		$	745,479		$	(2,528,505	)	$	3,199,704
Total Liabilities and Stockholders’ Equity	$	2,730,841		$	2,767,766		$	1,065,117		$	(2,840,268	)	$	3,723,456
																LKQ CORPORATION AND SUBSIDIARIES
LKQ CORPORATION AND SUBSIDIARIES																Condensed Consolidating Statements of Operations
Condensed Consolidating Statements of Operations																(In thousands)
(In thousands)
																	Year Ended December 31, 2012
	Three Months Ended September 30, 2013																Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
	Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated			Revenue	$	—		$	3,236,507		$	976,710		$	(90,287	)	$	4,122,930
Revenue	$	—		$	876,862		$	450,505		$	(29,273	)	$	1,298,094
																Cost of goods sold	—			1,886,098			602,979			(90,287		)	2,398,790
Cost of goods sold	—			522,176			287,284			(29,273		)	780,187
																Gross margin	—			1,350,409			373,731			—			1,724,140
Gross margin	—			354,686			163,221			—			517,907
																Facility and warehouse expenses	—			287,036			60,881			—			347,917
Facility and warehouse expenses	—			79,565			28,784			—			108,349
																Distribution expenses	—			281,011			94,824			—			375,835
Distribution expenses	—			73,752			35,841			—			109,593
																Selling, general and administrative expenses	21,098			346,596			127,897			—			495,591
Selling, general and administrative expenses	6,813			93,549			53,184			—			153,546
																Restructuring and acquisition related expenses	—			1,812			939			—			2,751
Restructuring and acquisition related expenses	—			411			1,795			—			2,206
																Depreciation and amortization	296			49,782			14,015			—			64,093
Depreciation and amortization	65			14,014			6,739			—			20,818
																Operating (loss) income	(21,394		)	384,172			75,175			—			437,953
Operating (loss) income	(6,878		)	93,395			36,878			—			123,395
																Other (income) expense:
Other expense (income):																Interest expense	24,272			308			6,849			—			31,429
Interest expense, net	13,335			81			1,784			—			15,200
																Intercompany interest (income) expense, net	(37,491		)	27,377			10,114			—			—
Intercompany interest (income) expense, net	(13,028		)	5,593			7,435			—			—
																Change in fair value of contingent consideration liabilities	—			(1,943		)	3,586			—			1,643
Change in fair value of contingent consideration liabilities	—			(72		)	784			—			712
																Interest and other income, net	(43		)	(3,638		)	(605		)	—			(4,286		)
Other expense (income), net	45			(912		)	(695		)	—			(1,562		)
																Total other (income) expense, net	(13,262		)	22,104			19,944			—			28,786
Total other expense, net	352			4,690			9,308			—			14,350
																(Loss) income before (benefit) provision for income taxes	(8,132		)	362,068			55,231			—			409,167
(Loss) income before (benefit) provision for income taxes	(7,230		)	88,705			27,570			—			109,045
																(Benefit) provision for income taxes	(3,287		)	140,150			11,079			—			147,942
(Benefit) provision for income taxes	(2,867		)	33,973			4,494			—			35,600
																Equity in earnings of subsidiaries	266,070			12,481			—			(278,551		)	—
Equity in earnings of subsidiaries	77,808			5,656			—			(83,464		)	—
																Net income	$	261,225		$	234,399		$	44,152		$	(278,551	)	$	261,225
Net income	$	73,445		$	60,388		$	23,076		$	(83,464	)	$	73,445
																LKQ CORPORATION AND SUBSIDIARIES
LKQ CORPORATION AND SUBSIDIARIES																Condensed Consolidating Statements of Operations
Condensed Consolidating Statements of Operations																(In thousands)
(In thousands)
																	Year Ended December 31, 2011
	Three Months Ended September 30, 2012																Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
	Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated			Revenue	$	—		$	2,975,275		$	370,912		$	(76,325	)	$	3,269,862
Revenue	$	—		$	791,672		$	249,248		$	(24,213	)	$	1,016,707
																Cost of goods sold	—			1,721,419			232,775			(76,325		)	1,877,869
Cost of goods sold	—			477,842			153,373			(24,213		)	607,002
																Gross margin	—			1,253,856			138,137			—			1,391,993
Gross margin	—			313,830			95,875			—			409,705
																Facility and warehouse expenses	—			261,260			32,163			—			293,423
Facility and warehouse expenses	—			72,037			14,702			—			86,739
																Distribution expenses	—			257,395			30,231			—			287,626
Distribution expenses	—			69,758			23,894			—			93,652
																Selling, general and administrative expenses	22,680			321,403			47,859			—			391,942
Selling, general and administrative expenses	4,876			85,360			30,813			—			121,049
																Restructuring and acquisition related expenses	—			3,438			4,152			—			7,590
Restructuring and acquisition related expenses	—			70			46			—			116
																Depreciation and amortization	239			44,724			4,966			—			49,929
Depreciation and amortization	75			12,642			3,998			—			16,715
																Operating (loss) income	(22,919		)	365,636			18,766			—			361,483
Operating (loss) income	(4,951		)	73,963			22,422			—			91,434
																Other (income) expense:
Other (income) expense:																Interest expense	21,839			99			2,369			—			24,307
Interest expense, net	6,350			47			1,567			—			7,964
																Intercompany interest (income) expense, net	(36,018		)	31,036			4,982			—			—
Intercompany interest (income) expense, net	(9,367		)	7,124			2,243			—			—
																Loss on debt extinguishment	5,345			—			—			—			5,345
Change in fair value of contingent consideration liabilities	—			(148		)	2,040			—			1,892
																Change in fair value of contingent consideration liabilities	(2,000		)	11			581			—			(1,408		)
Other income, net	(38		)	(1,220		)	(416		)	—			(1,674		)
																Interest and other income, net	(332		)	(1,979		)	(221		)	—			(2,532		)
Total other (income) expense, net	(3,055		)	5,803			5,434			—			8,182
																Total other (income) expense, net	(11,166		)	29,167			7,711			—			25,712
(Loss) income before (benefit) provision for income taxes	(1,896		)	68,160			16,988			—			83,252
																(Loss) income before (benefit) provision for income taxes	(11,753		)	336,469			11,055			—			335,771
(Benefit) provision for income taxes	(1,228		)	27,844			2,588			—			29,204
																(Benefit) provision for income taxes	(6,034		)	128,930			2,611			—			125,507
Equity in earnings of subsidiaries	54,716			4,113			—			(58,829		)	—
																Equity in earnings of subsidiaries	215,983			3,036			—			(219,019		)	—
Net income	$	54,048		$	44,429		$	14,400		$	(58,829	)	$	54,048
																Net income	$	210,264		$	210,575		$	8,444		$	(219,019	)	$	210,264
LKQ CORPORATION AND SUBSIDIARIES
Condensed Consolidating Statements of Operations																LKQ CORPORATION AND SUBSIDIARIES
(In thousands)																Condensed Consolidating Statements of Operations
																(In thousands)
	Nine Months Ended September 30, 2013
	Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated				Year Ended December 31, 2010
Revenue	$	—		$	2,698,008		$	1,133,369		$	(85,538	)	$	3,745,839			Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
																Revenue	$	—		$	2,370,488		$	113,369		$	(13,976	)	$	2,469,881
Cost of goods sold	—			1,593,764			707,884			(85,538		)	2,216,110
																Cost of goods sold	—			1,324,924			65,453			(13,976		)	1,376,401
Gross margin	—			1,104,244			425,485			—			1,529,729
																Gross margin	—			1,045,564			47,916			—			1,093,480
Facility and warehouse expenses	—			240,389			71,091			—			311,480
																Facility and warehouse expenses	—			218,384			15,609			—			233,993
Distribution expenses	—			224,266			95,767			—			320,033
																Distribution expenses	—			202,649			10,069			—			212,718
Selling, general and administrative expenses	20,130			282,364			134,120			—			436,614
																Selling, general and administrative expenses	20,873			272,797			16,558			—			310,228
Restructuring and acquisition related expenses	—			750			6,641			—			7,391
																Restructuring and acquisition related expenses	—			668			—			—			668
Depreciation and amortization	187			41,568			16,095			—			57,850
																Depreciation and amortization	93			36,184			1,719			—			37,996
Operating (loss) income	(20,317		)	314,907			101,771			—			396,361
																Operating (loss) income	(20,966		)	314,882			3,961			—			297,877
Other (income) expense:
Interest expense, net	29,589			621			6,077			—			36,287			Other (income) expense:
																Interest expense	28,069			560			1,136			—			29,765
Intercompany interest (income) expense, net	(34,318		)	16,901			17,417			—			—
																Intercompany interest (income) expense, net	(35,967		)	34,816			1,151			—			—
Loss on debt extinguishment	2,795			—			—			—			2,795
																Interest and other income, net	(129		)	(1,548		)	(336		)	—			(2,013		)
Change in fair value of contingent consideration liabilities	—			(936		)	2,701			—			1,765
																Total other (income) expense, net	(8,027		)	33,828			1,951			—			27,752
Other expense (income), net	172			(2,380		)	471			—			(1,737		)
																(Loss) income before (benefit) provision for income taxes	(12,939		)	281,054			2,010			—			270,125
Total other (income) expense, net	(1,762		)	14,206			26,666			—			39,110
																(Benefit) provision for income taxes	(6,238		)	108,737			508			—			103,007
(Loss) income before (benefit) provision for income taxes	(18,555		)	300,701			75,105			—			357,251
																Equity in earnings of subsidiaries	175,772			64			—			(175,836		)	—
(Benefit) provision for income taxes	(7,199		)	115,625			15,066			—			123,492
																Income from continuing operations	169,071			172,381			1,502			(175,836		)	167,118
Equity in earnings of subsidiaries	245,115			15,496			—			(260,611		)	—
																Discontinued operations:
Net income	$	233,759		$	200,572		$	60,039		$	(260,611	)	$	233,759
																Income from discontinued operations, net of taxes	—			224			—			—			224
LKQ CORPORATION AND SUBSIDIARIES																Gain on sale of discontinued operations, net of taxes	—			1,729			—			—			1,729
Condensed Consolidating Statements of Operations
(In thousands)																Income from discontinued operations	—			1,953			—			—			1,953
	Nine Months Ended September 30, 2012															Net income	$	169,071		$	174,334		$	1,502		$	(175,836	)	$	169,071
	Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
Revenue	$	—		$	2,415,328		$	709,201		$	(69,514	)	$	3,055,015
Cost of goods sold	—			1,410,926			434,584			(69,514		)	1,775,996
																LKQ CORPORATION AND SUBSIDIARIES
Gross margin	—			1,004,402			274,617			—			1,279,019			Condensed Consolidating Statements of Comprehensive Income (Loss)
																(In thousands)
Facility and warehouse expenses	—			211,861			42,178			—			254,039
																	Year Ended December 31, 2012
Distribution expenses	—			210,315			67,076			—			277,391				Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
																Net income	$	261,225		$	234,399		$	44,152		$	(278,551	)	$	261,225
Selling, general and administrative expenses	16,082			256,001			92,378			—			364,461
																Other comprehensive income (loss), net of tax:
Restructuring and acquisition related expenses	—			1,808			750			—			2,558			Foreign currency translation	12,921			5,278			12,334			(17,612		)	12,921
Depreciation and amortization	222			36,703			10,036			—			46,961			Net change in unrecognized gains/losses on derivative instruments, net of tax	(3,201		)	—			(519		)	519			(3,201		)
Operating (loss) income	(16,304		)	287,714			62,199			—			333,609			Total other comprehensive income	9,720			5,278			11,815			(17,093		)	9,720
Other (income) expense:																Total comprehensive income	$	270,945		$	239,677		$	55,967		$	(295,644	)	$	270,945
Interest expense, net	18,262			20			4,405			—			22,687
Intercompany interest (income) expense, net	(27,964		)	20,987			6,977			—			—
Change in fair value of contingent consideration liabilities	—			(83		)	1,870			—			1,787			LKQ CORPORATION AND SUBSIDIARIES
																Condensed Consolidating Statements of Comprehensive Income (Loss)
Other income, net	(32		)	(2,665		)	(716		)	—			(3,413		)	(In thousands)
Total other (income) expense, net	(9,734		)	18,259			12,536			—			21,061
																	Year Ended December 31, 2011
(Loss) income before (benefit) provision for income taxes	(6,570		)	269,455			49,663			—			312,548				Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
																Net income	$	210,264		$	210,575		$	8,444		$	(219,019	)	$	210,264
(Benefit) provision for income taxes	(2,924		)	106,473			9,962			—			113,511
																Other comprehensive loss, net of tax:
Equity in earnings of subsidiaries	202,683			9,449			—			(212,132		)	—			Foreign currency translation	(4,273		)	(1,440		)	(3,790		)	5,230			(4,273		)
Net income	$	199,037		$	172,431		$	39,701		$	(212,132	)	$	199,037		Net change in unrecognized gains/losses on derivative instruments, net of tax	(9,066		)	—			(1,042		)	1,042			(9,066		)
																Total other comprehensive loss	(13,339		)	(1,440		)	(4,832		)	6,272			(13,339		)
																Total comprehensive income	$	196,925		$	209,135		$	3,612		$	(212,747	)	$	196,925
LKQ CORPORATION AND SUBSIDIARIES
Condensed Consolidating Statements of Comprehensive Income (Loss)
(In thousands)
	Three Months Ended September 30, 2013															LKQ CORPORATION AND SUBSIDIARIES
	Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated			Condensed Consolidating Statements of Comprehensive Income
Net income	$	73,445		$	60,388		$	23,076		$	(83,464	)	$	73,445		(In thousands)
Other comprehensive income, net of tax:																	Year Ended December 31, 2010
Foreign currency translation	28,514			13,130			28,104			(41,234		)	28,514				Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
																Net income	$	169,071		$	174,334		$	1,502		$	(175,836	)	$	169,071
Net change in unrecognized gains/losses on derivative instruments, net of tax	625			—			127			(127		)	625
																Other comprehensive income, net of tax:
Total other comprehensive income	29,139			13,130			28,231			(41,361		)	29,139			Foreign currency translation	3,078			1,517			2,706			(4,223		)	3,078
Total comprehensive income	$	102,584		$	73,518		$	51,307		$	(124,825	)	$	102,584		Net change in unrecognized gains/losses on derivative instruments, net of tax	8,712			—			—			—			8,712
																Reversal of unrealized gain on pension plan, net of tax	(15		)	(15		)	—			15			(15		)
																Total other comprehensive income	11,775			1,502			2,706			(4,208		)	11,775
LKQ CORPORATION AND SUBSIDIARIES
Condensed Consolidating Statements of Comprehensive Income (Loss)																Total comprehensive income	$	180,846		$	175,836		$	4,208		$	(180,044	)	$	180,846
(In thousands)
																LKQ CORPORATION AND SUBSIDIARIES
	Three Months Ended September 30, 2012															Condensed Consolidating Statements of Cash Flows
	Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated			(In thousands)
Net income	$	54,048		$	44,429		$	14,400		$	(58,829	)	$	54,048
																	Year Ended December 31, 2012
Other comprehensive income (loss), net of tax:																	Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
Foreign currency translation	10,182			3,880			9,485			(13,365		)	10,182			CASH FLOWS FROM OPERATING ACTIVITIES:
																Net cash provided by (used in) operating activities	$	150,309		$	289,013		$	(74,085	)	$	(159,047	)	$	206,190
Net change in unrecognized gains/losses on derivative instruments, net of tax	(1,242		)	—			(166		)	166			(1,242		)
																CASH FLOWS FROM INVESTING ACTIVITIES:
Total other comprehensive income	8,940			3,880			9,319			(13,199		)	8,940			Purchases of property and equipment	(150		)	(68,344		)	(19,761		)	—			(88,255		)
Total comprehensive income	$	62,988		$	48,309		$	23,719		$	(72,028	)	$	62,988		Proceeds from sales of property and equipment	—			699			358			—			1,057
																Investment and intercompany note activity with subsidiaries	(132,006		)	—			—			132,006			—
																Cash used in acquisitions, net of cash acquired	—			(183,716		)	(81,620		)	—			(265,336		)
LKQ CORPORATION AND SUBSIDIARIES
Condensed Consolidating Statements of Comprehensive Income (Loss)																Net cash used in investing activities	(132,156		)	(251,361		)	(101,023		)	132,006			(352,534		)
(In thousands)
																CASH FLOWS FROM FINANCING ACTIVITIES:
																Proceeds from exercise of stock options	17,693			—			—			—			17,693
	Nine Months Ended September 30, 2013
	Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated			Excess tax benefit from stock-based payments	15,737			—			—			—			15,737
Net income	$	233,759		$	200,572		$	60,039		$	(260,611	)	$	233,759
																Debt issuance costs	(30		)	—			(223		)	—			(253		)
Other comprehensive income, net of tax:
Foreign currency translation	6,330			3,386			7,107			(10,493		)	6,330			Borrowings under revolving credit facility	612,700			—			129,681			—			742,381
Net change in unrecognized gains/losses on derivative instruments, net of tax	3,986			—			903			(903		)	3,986			Repayments under revolving credit facility	(832,700		)	—			(22,702		)	—			(855,402		)
Total other comprehensive income	10,316			3,386			8,010			(11,396		)	10,316			Borrowings under term loans	200,000			—			—			—			200,000
Total comprehensive income	$	244,075		$	203,958		$	68,049		$	(272,007	)	$	244,075		Repayments under term loans	(20,000		)	—			—			—			(20,000		)
																Borrowings under receivables securitization facility	—			—			82,700			—			82,700
																Repayments under receivables securitization facility	—			—			(2,700		)	—			(2,700		)
LKQ CORPORATION AND SUBSIDIARIES
Condensed Consolidating Statements of Comprehensive Income (Loss)																Payments of other obligations	(3,065		)	(6,861		)	(13,158		)	—			(23,084		)
(In thousands)
																Investment and intercompany note activity with parent	—			129,076			2,930			(132,006		)	—
	Nine Months Ended September 30, 2012															Dividends	—			(159,047		)	—			159,047			—
	Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
Net income	$	199,037		$	172,431		$	39,701		$	(212,132	)	$	199,037		Net cash (used in) provided by financing activities	(9,665		)	(36,832		)	176,528			27,041			157,072
Other comprehensive income (loss), net of tax:																Effect of exchange rate changes on cash and equivalents	—			—			795			—			795
Foreign currency translation	12,518			4,965			11,735			(16,700		)	12,518
																Net increase in cash and equivalents	8,488			820			2,215			—			11,523
Net change in unrecognized gains/losses on derivative instruments, net of tax	(4,233		)	—			(619		)	619			(4,233		)
																Cash and equivalents, beginning of period	9,908			17,433			20,906			—			48,247
Total other comprehensive income	8,285			4,965			11,116			(16,081		)	8,285
																Cash and equivalents, end of period	$	18,396		$	18,253		$	23,121		$	—		$	59,770
Total comprehensive income	$	207,322		$	177,396		$	50,817		$	(228,213	)	$	207,322
																LKQ CORPORATION AND SUBSIDIARIES
																Condensed Consolidating Statements of Cash Flows
																(In thousands)
																	Year Ended December 31, 2011
LKQ CORPORATION AND SUBSIDIARIES																	Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
Condensed Consolidating Statements of Cash Flows																CASH FLOWS FROM OPERATING ACTIVITIES:
(In thousands)																Net cash provided by operating activities	$	72,199		$	201,029		$	4,341		$	(65,797	)	$	211,772
	Nine Months Ended September 30, 2013															CASH FLOWS FROM INVESTING ACTIVITIES:
	Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated			Purchases of property and equipment	(922		)	(79,474		)	(6,020		)	—			(86,416		)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net cash provided by operating activities	$	101,136		$	195,524		$	116,212		$	(71,943	)	$	340,929		Proceeds from sales of property and equipment	2			1,557			184			—			1,743
CASH FLOWS FROM INVESTING ACTIVITIES:																Investment and intercompany note activity with subsidiaries	(347,005		)	(93,985		)	—			440,990			—
Purchases of property and equipment	(1		)	(40,824		)	(20,301		)	—			(61,126		)
																Cash used in acquisitions, net of cash acquired	—			(193,292		)	(293,642		)	—			(486,934		)
Proceeds from sales of property and equipment	—			1,032			427			—			1,459
																Net cash used in investing activities	(347,925		)	(365,194		)	(299,478		)	440,990			(571,607		)
Investment in unconsolidated subsidiary	—			—			(9,136		)	—			(9,136		)
																CASH FLOWS FROM FINANCING ACTIVITIES:
Investment and intercompany note activity with subsidiaries	(418,205		)	(84,893		)	—			503,098			—			Proceeds from exercise of stock options	11,919			—			—			—			11,919
Acquisitions, net of cash acquired	—			(21,570		)	(374,404		)	—			(395,974		)	Excess tax benefit from stock-based payments	7,973			—			—			—			7,973
Net cash used in investing activities	(418,206		)	(146,255		)	(403,414		)	503,098			(464,777		)	Debt issuance costs	(10,874		)	—			(174		)	—			(11,048		)
CASH FLOWS FROM FINANCING ACTIVITIES:																Borrowings under revolving credit facility	748,329			—			363,040			—			1,111,369
Proceeds from exercise of stock options	13,647			—			—			—			13,647
																Repayments under revolving credit facility	(227,329		)	—			(226,538		)	—			(453,867		)
Excess tax benefit from stock-based payments	15,998			—			—			—			15,998
																Borrowings under term loans	250,000			—			—			—			250,000
Debt issuance costs	(16,830		)	—			(82		)	—			(16,912		)
																Repayments under term loans	(563,079		)	—			(37,385		)	—			(600,464		)
Proceeds from issuance of senior notes	600,000			—			—			—			600,000
																Payments of other obligations	(1,640		)	(849		)	(1,982		)	—			(4,471		)
Borrowings under revolving credit facility	315,000			—			84,758			—			399,758
																Investment and intercompany note activity with parent	—			226,872			214,118			(440,990		)	—
Repayments under revolving credit facility	(616,000		)	—			(129,313		)	—			(745,313		)
																Dividends	—			(65,797		)	—			65,797			—
Borrowings under term loans	35,000			—			—			—			35,000
																Net cash provided by financing activities	215,299			160,226			311,079			(375,193		)	311,411
Repayments under term loans	(11,250		)	—			—			—			(11,250		)
																Effect of exchange rate changes on cash and equivalents	—			—			982			—			982
Borrowings under receivables securitization facility	—			—			41,500			—			41,500
																Net (decrease) increase in cash and equivalents	(60,427		)	(3,939		)	16,924			—			(47,442		)
Repayments under receivables securitization facility	—			—			(111,500		)	—			(111,500		)
																Cash and equivalents, beginning of period	70,335			21,372			3,982			—			95,689
Repayments of other long-term debt	(925		)	(7,983		)	(10,610		)	—			(19,518		)
																Cash and equivalents, end of period	$	9,908		$	17,433		$	20,906		$	—		$	48,247
Payments of other obligations	—			(473		)	(31,618		)	—			(32,091		)
																LKQ CORPORATION AND SUBSIDIARIES
Investment and intercompany note activity with parent	—			25,095			478,003			(503,098		)	—			Condensed Consolidating Statements of Cash Flows
																(In thousands)
Dividends	—			(71,943		)	—			71,943			—
																	Year Ended December 31, 2010
Net cash provided by (used in) financing activities	334,640			(55,304		)	321,138			(431,155		)	169,319				Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
																CASH FLOWS FROM OPERATING ACTIVITIES:
Effect of exchange rate changes on cash and equivalents	—			—			2,096			—			2,096			Net cash provided by (used in) operating activities	$	53,403		$	163,533		$	(2,115	)	$	(55,638	)	$	159,183
Net increase (decrease) in cash and equivalents	17,570			(6,035		)	36,032			—			47,567			CASH FLOWS FROM INVESTING ACTIVITIES:
																Purchases of property and equipment	(705		)	(57,687		)	(3,046		)	—			(61,438		)
Cash and equivalents, beginning of period	18,396			18,253			23,121			—			59,770
																Proceeds from sales of property and equipment	16			1,040			385			—			1,441
Cash and equivalents, end of period	$	35,966		$	12,218		$	59,153		$	—		$	107,337
																Proceeds from sale of businesses, net of cash sold	—			11,992			—			—			11,992
LKQ CORPORATION AND SUBSIDIARIES
Condensed Consolidating Statements of Cash Flows																Investment and intercompany note activity with subsidiaries	(77,421		)	—			—			77,421			—
(In thousands)
																Cash used in acquisitions, net of cash acquired	—			(121,384		)	(22,194		)	—			(143,578		)
	Nine Months Ended September 30, 2012
	Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated			Net cash used in investing activities	(78,110		)	(166,039		)	(24,855		)	77,421			(191,583		)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net cash provided by (used in) operating activities	$	134,934		$	252,440		$	(67,023	)	$	(138,279	)	$	182,072		CASH FLOWS FROM FINANCING ACTIVITIES:
																Proceeds from exercise of stock options	13,962			—			—			—			13,962
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(45		)	(47,446		)	(13,145		)	—			(60,636		)	Excess tax benefit from stock-based payments	15,000			—			—			—			15,000
Proceeds from sales of property and equipment	—			458			234			—			692			Debt issuance costs	(419		)	—			—			—			(419		)
Investment and intercompany note activity with subsidiaries	(48,690		)	—			—			48,690			—			Repayments under term loans	(7,037		)	—			(439		)	—			(7,476		)
Acquisitions, net of cash acquired	—			(110,713		)	(22,410		)	—			(133,123		)	Payments of other obligations	(850		)	(399		)	(856		)	—			(2,105		)
Net cash used in investing activities	(48,735		)	(157,701		)	(35,321		)	48,690			(193,067		)	Investment and intercompany note activity with parent	—			56,459			20,962			(77,421		)	—
CASH FLOWS FROM FINANCING ACTIVITIES:																Dividends	—			(55,638		)	—			55,638			—
Proceeds from exercise of stock options	14,187			—			—			—			14,187
																Net cash provided by financing activities	20,656			422			19,667			(21,783		)	18,962
Excess tax benefit from stock-based payments	11,071			—			—			—			11,071
																Effect of exchange rate changes on cash and equivalents	—			—			221			—			221
Debt issuance costs	—			—			(175		)	—			(175		)
																Net decrease in cash and equivalents	(4,051		)	(2,084		)	(7,082		)	—			(13,217		)
Borrowings under revolving credit facility	442,500			—			57,587			—			500,087
																Cash and equivalents, beginning of period	74,386			23,456			11,064			—			108,906
Repayments under revolving credit facility	(733,500		)	—			(14,351		)	—			(747,851		)
																Cash and equivalents, end of period	$	70,335		$	21,372		$	3,982		$	—		$	95,689
Borrowings under term loans	200,000			—			—			—			200,000
Repayments under term loans	(14,375		)	—			—			—			(14,375		)
Borrowings under receivables securitization facility	—			—			77,272			—			77,272
Repayments of other long-term debt	(2,580		)	(1,834		)	(3,922		)	—			(8,336		)
Payments of other obligations	—			(600		)	—			—			(600		)
Investment and intercompany note activity with parent	—			47,754			936			(48,690		)	—
Dividends	—			(138,279		)	—			138,279			—
Net cash (used in) provided by financing activities	(82,697		)	(92,959		)	117,347			89,589			31,280
Effect of exchange rate changes on cash and equivalents	—			—			682			—			682
Net increase in cash and equivalents	3,502			1,780			15,685			—			20,967
Cash and equivalents, beginning of period	9,908			17,433			20,906			—			48,247
Cash and equivalents, end of period	$	13,410		$	19,213		$	36,591		$	—		$	69,214

Schedule_IIValuation_and_Quali

Schedule II-Valuation and Qualifying Accounts and Reserves	12 Months Ended
	Dec. 31, 2012
Valuation and Qualifying Accounts [Abstract]	'
Schedule II-Valuation and Qualifying Accounts and Reserves	'
	Schedule II—Valuation and Qualifying Accounts and Reserves
	Descriptions	Balance at		Additions		Acquisitions and		Deductions			Balance at End
		Beginning of		Charged to		Other					of Period
		Period		Costs and
				Expenses
		(in thousands)
	ALLOWANCE FOR DOUBTFUL ACCOUNTS:
	Year ended December 31, 2010	$	6,507	$	4,326	$	1,125	$	(5,063	)	$	6,895
	Year ended December 31, 2011	6,895		5,084		2,199		(5,831		)	8,347
	Year ended December 31, 2012	8,347		5,928		308		(5,113		)	9,470
	ALLOWANCE FOR ESTIMATED RETURNS, DISCOUNTS & ALLOWANCES:
	Year ended December 31, 2010	$	15,802	$	541,314	$	1,061	$	(539,992	)	$	18,185
	Year ended December 31, 2011	18,185		668,936		2,754		(667,071		)	22,804
	Year ended December 31, 2012	22,804		714,880		1,151		(714,143		)	24,692

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	9 Months Ended																12 Months Ended
	Sep. 30, 2013																Dec. 31, 2012
Accounting Policies [Abstract]	'																'
Principles of Consolidation	'																'
																	Principles of Consolidation
																	The accompanying consolidated financial statements include the accounts of LKQ Corporation and its subsidiaries. All intercompany transactions and accounts have been eliminated.
Use of Estimates	'																'
																	Use of Estimates
																	In preparing our financial statements in conformity with accounting principles generally accepted in the United States we are required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.
Revenue Recognition	'																'
	Revenue Recognition																Revenue Recognition
	The majority of our revenue is derived from the sale of vehicle parts. Revenue is recognized when the products are shipped, delivered to or picked up by customers and title has transferred, subject to an allowance for estimated returns, discounts and allowances that we estimate based upon historical information. We recorded a reserve for estimated returns, discounts and allowances of $30.5 million and $24.7 million at September 30, 2013 and December 31, 2012, respectively. We present taxes assessed by governmental authorities collected from customers on a net basis. Therefore, the taxes are excluded from revenue on our Unaudited Consolidated Condensed Statements of Income and are shown as a current liability on our Unaudited Consolidated Condensed Balance Sheets until remitted. We recognize revenue from the sale of scrap, cores and other metals when title has transferred, which typically occurs upon delivery to the customer.																The majority of our revenue is derived from the sale of vehicle parts. Revenue is recognized when the products are shipped or picked up by customers and title has transferred, subject to an allowance for estimated returns, discounts and allowances that we estimate based upon historical information. We recorded a reserve for estimated returns, discounts and allowances of approximately $24.7 million and $22.8 million at December 31, 2012 and 2011, respectively. We present taxes assessed by governmental authorities collected from customers on a net basis. Therefore, the taxes are excluded from revenue on our Consolidated Statements of Income and are shown as a current liability on our Consolidated Balance Sheets until remitted. Revenue from the sale of separately-priced extended warranty contracts is reported as deferred revenue and recognized ratably over the term of the contracts or three years in the case of lifetime warranties. We recognize revenue from the sale of scrap, cores and other metals when title has transferred, which typically occurs upon delivery to the customer.
Shipping & Handling	'																'
																	Shipping & Handling
																	Revenue also includes amounts billed to customers related to shipping and handling of approximately $25.6 million, $23.9 million and $17.3 million during the years ended December 31, 2012, 2011 and 2010, respectively. Distribution expenses in the accompanying Consolidated Statements of Income are the costs incurred to prepare and deliver products to customers.
Receivables and Allowance for Doubtful Accounts	'																'
																	Receivables and Allowance for Doubtful Accounts
																	In the normal course of business, we extend credit to customers after a review of each customer's credit history. We recorded a reserve for uncollectible accounts of approximately $9.5 million and $8.3 million at December 31, 2012 and 2011, respectively. The reserve is based upon the aging of the accounts receivable, our assessment of the collectability of specific customer accounts and historical experience. Receivables are written off once collection efforts have been exhausted. Recoveries of receivables previously written off are recorded when received.
Concentrations of Credit Risk	'																'
																	Concentrations of Credit Risk
																	Financial instruments that potentially subject us to significant concentration of credit risk consist primarily of cash and equivalents and accounts receivable. We control our exposure to credit risk associated with these instruments by (i) placing our cash and equivalents with several major financial institutions; (ii) holding high-quality financial instruments; and (iii) maintaining strict policies over credit extension that include credit evaluations, credit limits and monitoring procedures. In addition, our overall credit risk with respect to accounts receivable is limited to some extent because our customer base is composed of a large number of geographically diverse customers.
Inventory	'																'
																	Inventory
																	We classify our inventory into the following categories: aftermarket and refurbished vehicle replacement products; and salvage and remanufactured vehicle replacement products. This classification reflects the historically distinct distribution channels used in the sale of alternative repair products in North America, although we continue to work toward integrating these distribution channels.
																	An aftermarket product is a new vehicle product manufactured by a company other than the original equipment manufacturer. Cost is established based on the average price we pay for parts, and includes expenses incurred for freight and overhead costs. For items purchased from foreign companies, import fees and duties and transportation insurance are also included. Refurbished inventory cost is based on the average price we pay for cores, which are recycled automotive parts that are not suitable for sale as a replacement part without further processing. The cost of our refurbished inventory also includes expenses incurred for freight, labor and other overhead.
																	A salvage product is a recycled vehicle part suitable for sale as a replacement part. Cost is established based upon the price we pay for a vehicle, including auction, storage and towing fees, as well as expenditures for buying and dismantling. Inventory carrying value is determined using the average cost to sales percentage at each of our facilities and applying that percentage to the facility's inventory at expected selling prices. The average cost to sales percentage is derived from each facility's historical vehicle profitability for salvage vehicles purchased at auction or from contracted rates for salvage vehicles acquired under certain direct procurement arrangements. Remanufactured inventory cost is based upon the price paid for cores, and also includes expenses incurred for freight, direct manufacturing costs and overhead.
																	For all inventory, carrying value is recorded at the lower of cost or market and is reduced to reflect the age of the inventory and current anticipated demand. If actual demand differs from our estimates, additional reductions to inventory carrying value would be necessary in the period such determination is made.
																	Inventory consists of the following (in thousands):
																		December 31,
																		2012			2011
																	Aftermarket and refurbished products	$	523,677		$	445,787
																	Salvage and remanufactured products	377,126			291,059
																		$	900,803		$	736,846
Property and Equipment	'																'
																	Property and Equipment
																	Property and equipment are recorded at cost. Expenditures for major additions and improvements that extend the useful life of the related asset are capitalized. As property and equipment are sold or retired, the applicable cost and accumulated depreciation are removed from the accounts and any resulting gain or loss thereon is recognized. Construction in progress consists primarily of building and land improvements at our existing facilities. Depreciation is calculated using the straight-line method over the estimated useful lives or, in the case of leasehold improvements, the term of the related lease and reasonably assured renewal periods, if shorter.
																	The internal and external costs incurred to develop internal use computer software during the application development stage of the implementation, including the design of the chosen path, are capitalized. Other costs, including expenses incurred during the preliminary project stage, training expenses, data conversion costs and expenses incurred in the post implementation stage are expensed in the period incurred. Capitalized costs are amortized ratably over the useful life of the software when the software becomes operational. Upgrades and enhancements to internal use software are capitalized only if the costs result in additional functionality. We do not plan to sell or market our internal use computer software to third parties.
																	Our estimated useful lives are as follows:
																	Land improvements	10-20 years
																	Buildings and improvements	20-40 years
																	Furniture, fixtures and equipment	3-20 years
																	Computer equipment and software	3-10 years
																	Vehicles and trailers	3-10 years
																	Property and equipment consists of the following (in thousands):
																		December 31,
																		2012			2011
																	Land and improvements	$	87,720		$	81,170
																	Buildings and improvements	133,368			119,414
																	Furniture, fixtures and equipment	243,565			192,514
																	Computer equipment and software	91,588			79,195
																	Vehicles and trailers	51,187			40,825
																	Leasehold improvements	91,280			69,079
																		698,708			582,197
																	Less—Accumulated depreciation	(231,130		)	(179,950		)
																	Construction in progress	26,801			21,851
																		$	494,379		$	424,098
Intangibles	'																'
	Intangible Assets																Intangibles
	Intangible assets consist primarily of goodwill (the cost of purchased businesses in excess of the fair value of the identifiable net assets acquired) and other specifically identifiable intangible assets, such as trade names, trademarks, customer relationships and covenants not to compete.																Intangible assets consist primarily of goodwill (the cost of purchased businesses in excess of the fair value of the identifiable net assets acquired) and other specifically identifiable intangible assets, such as trade names, trademarks, customer relationships and covenants not to compete.
	The change in the carrying amount of goodwill by reportable segment during the nine months ended September 30, 2013 is as follows (in thousands):																Goodwill is tested for impairment at least annually, and we performed annual impairment tests during the fourth quarters of 2012, 2011 and 2010. The results of all of these tests indicated that goodwill was not impaired.
																	The changes in the carrying amount of goodwill by reportable segment are as follows (in thousands):
		North America			Europe			Total
	Balance as of January 1, 2013	$	1,339,831		$	350,453		$	1,690,284									North America			Europe			Total
																	Balance as of January 1, 2010	$	938,783		$	—		$	938,783
	Business acquisitions and adjustments to previously recorded goodwill	17,623			209,638			227,261
																	Business acquisitions and adjustments to previously recorded goodwill	91,757			—			91,757
	Exchange rate effects	(4,407		)	7,778			3,371
																	Exchange rate effects	2,433			—			2,433
	Balance as of September 30, 2013	$	1,353,047		$	567,869		$	1,920,916
																	Balance as of December 31, 2010	$	1,032,973		$	—		$	1,032,973
	The components of other intangibles are as follows (in thousands):
																	Business acquisitions and adjustments to previously recorded goodwill	105,177			337,031			442,208
		September 30, 2013								December 31, 2012							Exchange rate effects	(1,520		)	2,402			882
		Gross			Accumulated			Net		Gross		Accumulated			Net
		Carrying			Amortization					Carrying		Amortization					Balance as of December 31, 2011	$	1,136,630		$	339,433		$	1,476,063
		Amount								Amount
	Trade names and trademarks	$	144,254		$	(26,167	)	$	118,087	$	118,422	$	(21,599	)	$	96,823	Business acquisitions and adjustments to previously recorded goodwill	201,742			(4,140		)	197,602
	Customer relationships	45,252			(10,616		)	34,636		14,426		(6,642		)	7,784		Exchange rate effects	1,459			15,160			16,619
	Covenants not to compete	3,822			(2,116		)	1,706		3,654		(1,546		)	2,108		Balance as of December 31, 2012	$	1,339,831		$	350,453		$	1,690,284
		$	193,328		$	(38,899	)	$	154,429	$	136,502	$	(29,787	)	$	106,715	In 2011 and 2012, we finalized the valuation of certain intangible assets acquired related to our 2010 and 2011 acquisitions, respectively. As these adjustments did not have a material impact on our financial position or results of operations, we recorded these adjustments to goodwill and amortization expense in 2011 and 2012, respectively.
																	The components of other intangibles are as follows (in thousands):
	During the nine months ended September 30, 2013, we recorded $24.7 million of trade names and $25.3 million of customer relationships for our acquisition of Sator Beheer B.V. ("Sator") as discussed in Note 9, "Business Combinations." Trade names and trademarks are amortized over a useful life ranging from 10 to 30 years on a straight-line basis. Customer relationships are amortized over the expected period to be benefited (5 to 15 years) on either a straight-line or accelerated basis. Covenants not to compete are amortized over the lives of the respective agreements, which range from one to five years, on a straight-line basis. Amortization expense for intangibles was $9.0 million and $7.1 million during the nine month periods ended September 30, 2013 and 2012, respectively. Estimated amortization expense for each of the five years in the period ending December 31, 2017 is $13.0 million, $14.2 million, $12.8 million, $11.4 million and $10.5 million, respectively.
																		December 31, 2012								December 31, 2011
																		Gross			Accumulated			Net		Gross		Accumulated			Net
																		Carrying			Amortization					Carrying		Amortization
																		Amount								Amount
																	Trade names and trademarks	$	118,422		$	(21,599	)	$	96,823	$	115,954	$	(16,305	)	$	99,649
																	Customer relationships	14,426			(6,642		)	7,784		10,050		(3,065		)	6,985
																	Covenants not to compete	3,654			(1,546		)	2,108		3,194		(918		)	2,276
																		$	136,502		$	(29,787	)	$	106,715	$	129,198	$	(20,288	)	$	108,910
																	In 2012, we recorded $0.6 million of trade names, $4.1 million of customer relationships and $0.6 million of covenants not to compete resulting from our 2012 acquisitions and adjustments to certain preliminary intangible asset valuations from our 2011 acquisitions. In 2011, we recorded $40.1 million of trade names, $5.7 million of customer relationships and $1.5 million of covenants not to compete resulting from our 2011 acquisitions and adjustments to certain preliminary intangible asset valuations from our 2010 acquisitions. The trade names recorded in 2011 included $39.3 million for the Euro Car Parts trade name related to our acquisition of Euro Car Parts Holdings Limited (“ECP”) effective October 1, 2011. Trade names and trademarks are amortized over a useful life ranging from 10 to 30 years on a straight-line basis. Customer relationships are amortized over the expected period to be benefited (5 to 10 years) on either a straight-line or accelerated basis. Covenants not to compete are amortized over the lives of the respective agreements, which range from one to five years, on a straight-line basis. Amortization expense for intangibles was $9.5 million, $7.9 million and $4.2 million during the years ended December 31, 2012, 2011 and 2010, respectively. Estimated amortization expense for each of the five years in the period ending December 31, 2017 is $8.8 million, $7.9 million, $7.1 million, $6.3 million and $6.0 million, respectively.
																	Intangibles
																	Intangible assets consist primarily of goodwill (the cost of purchased businesses in excess of the fair value of the identifiable net assets acquired) and other specifically identifiable intangible assets, such as trade names, trademarks, customer relationships and covenants not to compete.
																	Goodwill is tested for impairment at least annually, and we performed annual impairment tests during the fourth quarters of 2012, 2011 and 2010. The results of all of these tests indicated that goodwill was not impaired.
																	The changes in the carrying amount of goodwill by reportable segment are as follows (in thousands):
																		North America			Europe			Total
																	Balance as of January 1, 2010	$	938,783		$	—		$	938,783
																	Business acquisitions and adjustments to previously recorded goodwill	91,757			—			91,757
																	Exchange rate effects	2,433			—			2,433
																	Balance as of December 31, 2010	$	1,032,973		$	—		$	1,032,973
																	Business acquisitions and adjustments to previously recorded goodwill	105,177			337,031			442,208
																	Exchange rate effects	(1,520		)	2,402			882
																	Balance as of December 31, 2011	$	1,136,630		$	339,433		$	1,476,063
																	Business acquisitions and adjustments to previously recorded goodwill	201,742			(4,140		)	197,602
																	Exchange rate effects	1,459			15,160			16,619
																	Balance as of December 31, 2012	$	1,339,831		$	350,453		$	1,690,284
																	In 2011 and 2012, we finalized the valuation of certain intangible assets acquired related to our 2010 and 2011 acquisitions, respectively. As these adjustments did not have a material impact on our financial position or results of operations, we recorded these adjustments to goodwill and amortization expense in 2011 and 2012, respectively.
																	The components of other intangibles are as follows (in thousands):
																		December 31, 2012								December 31, 2011
																		Gross			Accumulated			Net		Gross		Accumulated			Net
																		Carrying			Amortization					Carrying		Amortization
																		Amount								Amount
																	Trade names and trademarks	$	118,422		$	(21,599	)	$	96,823	$	115,954	$	(16,305	)	$	99,649
																	Customer relationships	14,426			(6,642		)	7,784		10,050		(3,065		)	6,985
																	Covenants not to compete	3,654			(1,546		)	2,108		3,194		(918		)	2,276
																		$	136,502		$	(29,787	)	$	106,715	$	129,198	$	(20,288	)	$	108,910
																	In 2012, we recorded $0.6 million of trade names, $4.1 million of customer relationships and $0.6 million of covenants not to compete resulting from our 2012 acquisitions and adjustments to certain preliminary intangible asset valuations from our 2011 acquisitions. In 2011, we recorded $40.1 million of trade names, $5.7 million of customer relationships and $1.5 million of covenants not to compete resulting from our 2011 acquisitions and adjustments to certain preliminary intangible asset valuations from our 2010 acquisitions. The trade names recorded in 2011 included $39.3 million for the Euro Car Parts trade name related to our acquisition of Euro Car Parts Holdings Limited (“ECP”) effective October 1, 2011. Trade names and trademarks are amortized over a useful life ranging from 10 to 30 years on a straight-line basis. Customer relationships are amortized over the expected period to be benefited (5 to 10 years) on either a straight-line or accelerated basis. Covenants not to compete are amortized over the lives of the respective agreements, which range from one to five years, on a straight-line basis. Amortization expense for intangibles was $9.5 million, $7.9 million and $4.2 million during the years ended December 31, 2012, 2011 and 2010, respectively. Estimated amortization expense for each of the five years in the period ending December 31, 2017 is $8.8 million, $7.9 million, $7.1 million, $6.3 million and $6.0 million, respectively.
Impairment of Long-Lived Assets	'																'
																	Impairment of Long-Lived Assets
																	Long-lived assets are reviewed for possible impairment whenever events or circumstances indicate that the carrying amount of such assets may not be recoverable. If such review indicates that the carrying amount of long-lived assets is not recoverable, the carrying amount of such assets is reduced to fair value. There were no material adjustments to the carrying value of long-lived assets of continuing operations during the years ended December 31, 2012, 2011 or 2010.
Product Warranties	'																'
	Warranty Reserve																Product Warranties
	Some of our salvage mechanical products are sold with a standard six month warranty against defects. Additionally, some of our remanufactured engines are sold with a standard three year warranty against defects. We also provide a limited lifetime warranty for certain of our aftermarket products. We record the estimated warranty costs at the time of sale using historical warranty claim information to project future warranty claims activity. The changes in the warranty reserve during the nine month period ended September 30, 2013 were as follows (in thousands):																Some of our salvage mechanical products are sold with a standard six month warranty against defects. Additionally, some of our remanufactured engines are sold with a standard three year warranty against defects. We also provide a limited lifetime warranty for certain of our aftermarket products. We record the estimated warranty costs at the time of sale using historical warranty claim information to project future warranty claims activity. The changes in the warranty reserve are as follows (in thousands):
																	Balance as of January 1, 2011	$	2,063
	Balance as of January 1, 2013	$	10,574
																	Warranty expense	22,364
	Warranty expense	22,652
																	Warranty claims	(20,802		)
	Warranty claims	(21,109		)													Business acquisitions	3,722
	Balance as of September 30, 2013	$	12,117
																	Balance as of December 31, 2011	$	7,347
	For an additional fee, we also sell extended warranty contracts for certain mechanical products. The expense related to extended warranty claims is recognized when the claim is made.
																	Warranty expense	29,628
																	Warranty claims	(27,514		)
																	Business acquisitions	1,113
																	Balance as of December 31, 2012	$	10,574
																	For an additional fee, we also sell extended warranty contracts for certain mechanical products. The expense related to extended warranty claims is recognized when the claim is made.
Self-Insurance Reserves	'																'
																	Self-Insurance Reserves
																	We self-insure a portion of employee medical benefits under the terms of our employee health insurance program. We purchase certain stop-loss insurance to limit our liability exposure. We also self-insure a portion of our property and casualty risk, which includes automobile liability, general liability, directors and officers liability, workers' compensation and property coverage, under deductible insurance programs. The insurance premium costs are expensed over the contract periods. A reserve for liabilities associated with these losses is established for claims filed and claims incurred but not yet reported based upon our estimate of ultimate cost, which is calculated using analyses of historical data. We monitor new claims and claim development as well as trends related to the claims incurred but not reported in order to assess the adequacy of our insurance reserves. Total self-insurance reserves were $44.1 million and $37.4 million, including $21.5 million and $18.2 million classified as Other Accrued Expenses, as of December 31, 2012 and 2011, respectively. The remaining balances of self-insurance reserves are classified as Other Noncurrent Liabilities, which reflects management's estimates of when claims will be paid. The reserves presented on the Consolidated Balance Sheets are net of claims deposits of $0.5 million at both December 31, 2012 and 2011. In addition to these claims deposits, we had outstanding letters of credit of $37.1 million and $31.8 million at December 31, 2012 and 2011, respectively, to guarantee self-insurance claims payments. While we do not expect the amounts ultimately paid to differ significantly from our estimates, our insurance reserves and corresponding expenses could be affected if future claims experience differs significantly from historical trends and assumptions.
Income Taxes	'																'
																	Income Taxes
																	Current income taxes are provided on income reported for financial reporting purposes, adjusted for transactions that do not enter into the computation of income taxes payable in the same year. Deferred income taxes have been provided to show the effect of temporary differences between the tax bases of assets and liabilities and their reported amounts in the financial statements. A valuation allowance is provided for deferred tax assets if it is more likely than not that these items will either expire before we are able to realize their benefit or that future deductibility is uncertain.
																	We recognize the benefits of uncertain tax positions taken or expected to be taken in tax returns in the provision for income taxes only for those positions that are more likely than not to be realized. We follow a two-step approach to recognizing and measuring uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement. We consider many factors when evaluating and estimating our tax positions and tax benefits, which may require periodic adjustments and which may not accurately forecast actual outcomes. Our policy is to include interest and penalties associated with income tax obligations in income tax expense.
																	U.S. federal income taxes are not provided on our interest in undistributed earnings of foreign subsidiaries when it is management's intent that such earnings will remain invested in those subsidiaries or other foreign subsidiaries. Taxes will be provided on these earnings in the period in which a decision is made to repatriate the earnings.
Depreciation Expense	'																'
	Depreciation Expense																Depreciation Expense
	Included in Cost of Goods Sold on the Unaudited Consolidated Condensed Statements of Income is depreciation expense associated with our refurbishing, remanufacturing, and furnace operations and our distribution centers.																Included in Cost of Goods Sold on the Consolidated Statements of Income is depreciation expense associated with our refurbishing, remanufacturing, and furnace operations and our distribution centers.
Rental Expense	'																'
																	Rental Expense
																	We recognize rental expense on a straight-line basis over the respective lease terms, including reasonably-assured renewal periods, for all of our operating leases.
Foreign Currency Translation	'																'
																	Foreign Currency Translation
																	For most of our foreign operations, the local currency is the functional currency. Assets and liabilities are translated into U.S. dollars at the period-ending exchange rate. Statements of Income amounts are translated to U.S. dollars using average exchange rates during the period. Translation gains and losses are reported as a component of Accumulated Other Comprehensive Income (Loss) in stockholders' equity.
Recent Accounting Pronouncements	'																'
	Recent Accounting Pronouncements																Recent Accounting Pronouncements
	Effective January 1, 2013, we adopted the Financial Accounting Standards Board ("FASB") Accounting Standards Update ("ASU") 2013-02, "Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income." This update requires disclosure of amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the financial statements or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income. For amounts that are not required to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures that provide additional details about those amounts. The update does not change the items reported in other comprehensive income or when an item of other comprehensive income is reclassified to net income. As this guidance only revises the presentation and disclosures related to the reclassification of items out of accumulated other comprehensive income, the adoption of this guidance did not affect our financial position, results of operations or cash flows. See Note 12, "Accumulated Other Comprehensive Income" for the additional required disclosures.																Effective January 1, 2012, we adopted the Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) No. 2011-05, “Presentation of Comprehensive Income” and ASU No. 2011-12, “Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05.” These ASUs eliminate the option to present the components of other comprehensive income in the statement of changes in stockholders’ equity. Instead, entities have the option to present the components of net income, the components of other comprehensive income and total comprehensive income in a single continuous statement or in two separate but consecutive statements. The amendments did not change the items reported in other comprehensive income or when an item of other comprehensive income is reclassified to net income. As a result, the adoption of this guidance did not affect our financial position, results of operations or cash flows. We have presented the components of net income, the components of other comprehensive income and total comprehensive income in two separate but consecutive statements.
																	Additionally, in February 2013, the FASB issued ASU 2013-02, “Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income.” This update requires disclosure of amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the financial statements or in the notes, significant amounts reclassified out of AOCI by the respective line items of net income. For amounts that are not required to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures that provide additional details about those amounts. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2012. The update does not change the items reported in other comprehensive income or when an item of other comprehensive income is reclassified to net income. As this guidance only revises the presentation and disclosures related to the reclassification of items out of accumulated other comprehensive income, the adoption of this guidance will not affect our financial position, results of operations or cash flows.
																	Effective January 1, 2012, we adopted FASB ASU No. 2011-04, “Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs.” This update clarifies existing fair value measurement requirements, amends existing guidance primarily related to fair value measurements for financial instruments, and requires enhanced disclosures on fair value measurements. The additional disclosures are specific to Level 3 fair value measurements, transfers between Level 1 and Level 2 of the fair value hierarchy, financial instruments not measured at fair value and use of an asset measured or disclosed at fair value differing from its highest and best use. We applied the provisions of this ASU to our fair value measurements during the current year, however, the adoption did not have a material effect on our financial statements. See Note 7, "Fair Value Measurements," for the required disclosures.
Equity Method Investments	'																'
	Investment in Unconsolidated Subsidiary
	In August 2013, we entered into an agreement with Suncorp Group, a leading general insurance group in Australia and New Zealand, to develop an alternative vehicle replacement parts business in those countries. We hold a 49% equity interest in the entity and will contribute our experience to help establish automotive parts recycling operations and to facilitate the procurement of aftermarket parts; Suncorp Group holds a 51% equity interest and will supply salvage vehicles to the venture as well as assist in establishing relationships with repair shops as customers. We are accounting for our interest in this subsidiary using the equity method of accounting, as our investment gives us the ability to exercise significant influence, but not control, over the investee. The total of our investment in the equity-method investee is included within Other Assets on our Unaudited Consolidated Condensed Balance Sheets. As of September 30, 2013, the carrying value of our investment in this unconsolidated subsidiary was $9.3 million. Our equity in the net earnings of the investee for the three months ended September 30, 2013 was not material.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	9 Months Ended																12 Months Ended
	Sep. 30, 2013																Dec. 31, 2012
Accounting Policies [Abstract]	'																'
Schedule Of Inventory	'																'
	Inventory consists of the following (in thousands):																Inventory consists of the following (in thousands):
		September 30,			December 31,													December 31,
		2013			2012													2012			2011
	Aftermarket and refurbished products	$	649,768		$	523,677											Aftermarket and refurbished products	$	523,677		$	445,787
	Salvage and remanufactured products	368,401			377,126												Salvage and remanufactured products	377,126			291,059
		$	1,018,169		$	900,803												$	900,803		$	736,846
Schedule Of Estimated Useful Lives	'																'
																	Our estimated useful lives are as follows:
																	Land improvements	10-20 years
																	Buildings and improvements	20-40 years
																	Furniture, fixtures and equipment	3-20 years
																	Computer equipment and software	3-10 years
																	Vehicles and trailers	3-10 years
Schedule Of Property And Equipment	'																'
																	Property and equipment consists of the following (in thousands):
																		December 31,
																		2012			2011
																	Land and improvements	$	87,720		$	81,170
																	Buildings and improvements	133,368			119,414
																	Furniture, fixtures and equipment	243,565			192,514
																	Computer equipment and software	91,588			79,195
																	Vehicles and trailers	51,187			40,825
																	Leasehold improvements	91,280			69,079
																		698,708			582,197
																	Less—Accumulated depreciation	(231,130		)	(179,950		)
																	Construction in progress	26,801			21,851
																		$	494,379		$	424,098
Changes In Carrying Amount Of Goodwill	'																'
	The change in the carrying amount of goodwill by reportable segment during the nine months ended September 30, 2013 is as follows (in thousands):																The changes in the carrying amount of goodwill by reportable segment are as follows (in thousands):
		North America			Europe			Total										North America			Europe			Total
	Balance as of January 1, 2013	$	1,339,831		$	350,453		$	1,690,284								Balance as of January 1, 2010	$	938,783		$	—		$	938,783
	Business acquisitions and adjustments to previously recorded goodwill	17,623			209,638			227,261									Business acquisitions and adjustments to previously recorded goodwill	91,757			—			91,757
	Exchange rate effects	(4,407		)	7,778			3,371									Exchange rate effects	2,433			—			2,433
	Balance as of September 30, 2013	$	1,353,047		$	567,869		$	1,920,916								Balance as of December 31, 2010	$	1,032,973		$	—		$	1,032,973
																	Business acquisitions and adjustments to previously recorded goodwill	105,177			337,031			442,208
																	Exchange rate effects	(1,520		)	2,402			882
																	Balance as of December 31, 2011	$	1,136,630		$	339,433		$	1,476,063
																	Business acquisitions and adjustments to previously recorded goodwill	201,742			(4,140		)	197,602
																	Exchange rate effects	1,459			15,160			16,619
																	Balance as of December 31, 2012	$	1,339,831		$	350,453		$	1,690,284
Components Of Other Intangibles	'																'
	The components of other intangibles are as follows (in thousands):																The components of other intangibles are as follows (in thousands):
		September 30, 2013								December 31, 2012								December 31, 2012								December 31, 2011
		Gross			Accumulated			Net		Gross		Accumulated			Net			Gross			Accumulated			Net		Gross		Accumulated			Net
		Carrying			Amortization					Carrying		Amortization						Carrying			Amortization					Carrying		Amortization
		Amount								Amount								Amount								Amount
	Trade names and trademarks	$	144,254		$	(26,167	)	$	118,087	$	118,422	$	(21,599	)	$	96,823	Trade names and trademarks	$	118,422		$	(21,599	)	$	96,823	$	115,954	$	(16,305	)	$	99,649
	Customer relationships	45,252			(10,616		)	34,636		14,426		(6,642		)	7,784		Customer relationships	14,426			(6,642		)	7,784		10,050		(3,065		)	6,985
	Covenants not to compete	3,822			(2,116		)	1,706		3,654		(1,546		)	2,108		Covenants not to compete	3,654			(1,546		)	2,108		3,194		(918		)	2,276
		$	193,328		$	(38,899	)	$	154,429	$	136,502	$	(29,787	)	$	106,715		$	136,502		$	(29,787	)	$	106,715	$	129,198	$	(20,288	)	$	108,910
Changes In Warranty Reserve	'																'
	The changes in the warranty reserve during the nine month period ended September 30, 2013 were as follows (in thousands):																The changes in the warranty reserve are as follows (in thousands):
																	Balance as of January 1, 2011	$	2,063
	Balance as of January 1, 2013	$	10,574
																	Warranty expense	22,364
	Warranty expense	22,652
																	Warranty claims	(20,802		)
	Warranty claims	(21,109		)													Business acquisitions	3,722
	Balance as of September 30, 2013	$	12,117
																	Balance as of December 31, 2011	$	7,347
																	Warranty expense	29,628
																	Warranty claims	(27,514		)
																	Business acquisitions	1,113
																	Balance as of December 31, 2012	$	10,574

Discontinued_Operations_Discon

Discontinued Operations Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2012
Discontinued Operations and Disposal Groups [Abstract]	'
Results Of Operations For Discontinued Operations	'
	Results of operations for the discontinued operations are as follows (in thousands):
		Year Ended December 31,
		2012		2011		2010
	Revenue	$	—	$	—	$	686
	Income before income tax provision	$	—	$	—	$	355
	Income tax provision	—		—		131
	Income from discontinued operations, net of taxes, before gain on sale of discontinued operations	—		—		224
	Gain on sale of discontinued operations, net of taxes of $1,015	—		—		1,729
	Income from discontinued operations, net of taxes	$	—	$	—	$	1,953

Equity_Incentive_Plans_Tables

Equity Incentive Plans (Tables)	9 Months Ended																				12 Months Ended
	Sep. 30, 2013																				Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'																				'
Summary Of Transactions In Stock-Based Compensation Plans	'																				'
	A summary of transactions in our stock-based compensation plans for the nine months ended September 30, 2013 is as follows:																				A summary of transactions in our stock-based compensation plans is as follows:
		Shares			RSUs							Stock Options					Restricted Stock					Shares			RSUs							Stock Options							Restricted Stock
		Available For																				Available For
		Grant			Number			Weighted-				Number			Weighted-		Number		Weighted-			Grant			Number			Weighted				Number			Weighted				Number		Weighted
					Outstanding			Average				Outstanding			Average		Outstanding		Average						Outstanding			Average				Outstanding			Average				Outstanding		Average
								Grant Date							Exercise				Grant Date									Grant Date							Exercise						Grant Date
								Fair Value							Price				Fair Value									Fair Value							Price						Fair Value
	Balance, January 1, 2013	14,643,932			2,351,362			$	14.02			9,355,070			$	6.9	116,000		$	9.47	Balance, January 1, 2010	7,285,606			—			$	—			18,658,814			$	4.41			404,000		$	9.5
	Granted	(924,312	)		924,312			22.18				—			—		—		—		Granted	(3,423,066	)		—			—				3,423,066			9.98				—		—
	Exercised	—			—			—				(2,143,544	)		6.37		—		—		Exercised	—			—			—				(5,516,310	)		2.53				—		—
	Vested	—			(593,671	)		15.04				—			—		(86,000	)	9.54		Vested	—			—			—				—			—				(96,000	)	9.51
	Canceled	177,174			(97,254	)		16.14				(79,920	)		8.8		—		—		Cancelled	417,640			—			—				(417,640	)		8.06				—		—
	Balance, September 30, 2013	13,896,794			2,584,749			$	16.63			7,131,606			$	7.04	30,000		$	9.3	Balance, December 31, 2010	4,280,180			—			$	—			16,147,930			$	6.14			308,000		$	9.5
																					Granted	(1,643,348	)		1,643,348			11.8				—			—				—		—
																					Shares Issued for Director Compensation	(31,166	)		—			—				—			—				—		—
																					Exercised	—			—			—				(2,768,038	)		4.31				—		—
																					Vested	—			(164,862	)		11.84				—			—				(96,000	)	9.51
																					Cancelled	346,704			(44,904	)		11.77				(301,800	)		8.44				—		—
																					Additional Shares Authorized	12,800,000			—			—				—			—				—		—
																					Balance, December 31, 2011	15,752,370			1,433,582			$	11.8			13,078,092			$	6.47			212,000		$	9.49
																					Granted	(1,504,410	)		1,504,410			15.86				—			—				—		—
																					Exercised	—			—			—				(3,446,472	)		5.13				—		—
																					Vested	—			(467,208	)		13.09				—			—				(96,000	)	9.51
																					Cancelled	395,972			(119,422	)		14.03				(276,550	)		8.3				—		—
																					Balance, December 31, 2012	14,643,932			2,351,362			$	14.02			9,355,070			$	6.9			116,000		$	9.47
Summary Of Expected to Vest RSUs, Options, and Restricted Shares	'																				'
																					The following table summarizes information about expected to vest RSUs and restricted stock, and vested and expected to vest options at December 31, 2012:
																						Shares			Weighted		Intrinsic				Weighted
																									Average		Value				Average
																									Remaining		(in thousands)				Exercise
																									Contractual						Price
																									Life (Yrs)
																					RSUs	2,319,877			3.5		$	48,949			$	—
																					Stock options	9,079,684			5		129,421				6.85
																					Restricted stock	116,000			0.6		2,448				—
Summary Of Oustanding And Exercisable Stock Options	'																				'
																					The following table summarizes information about outstanding and exercisable stock options at December 31, 2012:
																							Outstanding									Exercisable
																					Range of Exercise Prices		Shares			Weighted		Weighted				Shares			Weighted		Weighted
																										Average		Average							Average		Average
																										Remaining		Exercise							Remaining		Exercise
																										Contractual		Price							Contractual		Price
																										Life (Yrs)									Life (Yrs)
																					$1.50 - $3.50		1,357,538			1.6		$	2.11			1,357,538			1.6		$	2.11
																					$3.51 - $5.50		1,676,760			3.5		4.85				1,676,760			3.5		4.85
																					$5.51 - $7.50		2,193,800			6		5.98				1,448,330			6		5.98
																					$7.51 - $9.50		215,666			6.1		9.21				160,733			5.8		9.25
																					$9.51 +		3,911,306			6.3		9.84				2,253,124			6		9.78
																							9,355,070			5		$	6.9			6,896,485			4.5		$	6.26
Summary Of Weighted Average Assumptions Used To Compute The Fair Value Of Stock Options	'																				'
																					The following table summarizes the weighted average assumptions used to compute the fair value of stock option grants:
																						Year Ended
																						December 31,
																						2010
																					Expected life (in years)	6.4
																					Risk-free interest rate	3.17		%
																					Volatility	43.9		%
																					Dividend yield	0		%
																					Weighted average fair value of options granted	$	4.77
Schedule Of Pre-Tax Stock-Based Compensation Expense	'																				'
	The components of pre-tax stock-based compensation expense are as follows (in thousands):																				The components of pre-tax stock-based compensation expense are as follows (in thousands):
		Three Months Ended								Nine Months Ended												Year Ended December 31,
		September 30,								September 30,												2012				2011				2010
		2013				2012				2013				2012							RSUs	$	8,411			$	3,666			$	—
	RSUs	$	4,559			$	2,048			$	12,674			$	6,131
																					Stock options	6,310				8,129				8,771
	Stock options	1,124				1,720				3,457				5,162
																					Restricted stock	913				913				913
	Restricted stock	47				230				161				683
																					Stock issued to non-employee directors	—				399				290
	Total stock-based compensation expense	$	5,730			$	3,998			$	16,292			$	11,976
																					Total stock-based compensation expense	$	15,634			$	13,107			$	9,974
Schedule Of Stock-Based Compensation Expense Included In Statements Of Income	'																				'
	The following table sets forth the classification of total stock-based compensation expense included in our Unaudited Consolidated Condensed Statements of Income (in thousands):																				The following table sets forth the classification of total stock-based compensation expense included in our Consolidated Statements of Income (in thousands):
		Three Months Ended								Nine Months Ended												Year Ended December 31,
		September 30,								September 30,												2012				2011				2010
		2013				2012				2013				2012							Cost of goods sold	$	376			$	327			$	278
	Cost of goods sold	$	98			$	99			$	294			$	298
																					Facility and warehouse expenses	2,465				2,391				2,069
	Facility and warehouse expenses	687				648				2,058				1,951
																					Selling, general and administrative expenses	12,793				10,389				7,627
	Selling, general and administrative expenses	4,945				3,251				13,940				9,727
																						15,634				13,107				9,974
		5,730				3,998				16,292				11,976
																					Income tax benefit	(6,097		)		(5,059		)		(3,920		)
	Income tax benefit	(2,235		)		(1,559		)		(6,354		)		(4,671		)					Total stock-based compensation expense, net of tax	$	9,537			$	8,048			$	6,054
	Total stock-based compensation expense, net of tax	$	3,495			$	2,439			$	9,938			$	7,305
Schedule Of Stock-Based Compensation Expense Expected To Be Recognized	'																				'
	As of September 30, 2013, unrecognized compensation expense related to unvested RSUs, stock options and restricted stock is expected to be recognized as follows (in thousands):																				As of December 31, 2012, unrecognized compensation expense related to unvested RSUs, stock options and restricted stock is expected to be recognized as follows (in thousands):
		RSUs				Stock				Restricted				Total								RSUs				Stock				Restricted				Total
						Options				Stock																Options				Stock
	Remainder of 2013	$	4,459			$	1,123			$	47			$	5,629						2013	$	8,254			$	4,580			$	208			$	13,042
	2014	12,829				3,007				139				15,975							2014	7,897				3,007				139				11,043
	2015	9,421				75				—				9,496							2015	7,861				75				—				7,936
	2016	5,673				—				—				5,673							2016	4,394				—				—				4,394
	2017	2,575				—				—				2,575							2017	141				—				—				141
	2018	96				—				—				96							Total unrecognized compensation expense	$	28,547			$	7,662			$	347			$	36,556
	Total unrecognized compensation expense	$	35,053			$	4,205			$	186			$	39,444

LongTerm_Obligations_Tables

Long-Term Obligations (Tables)	9 Months Ended							12 Months Ended
	Sep. 30, 2013							Dec. 31, 2012
Debt Disclosure [Abstract]	'							'
Schedule Of Long-Term Obligations	'							'
	Long-Term Obligations consist of the following (in thousands):							Long-Term Obligations consist of the following (in thousands):
		September 30,			December 31,				December 31,
		2013			2012				2012			2011
	Senior secured credit agreement:							Senior secured credit agreement:
	Term loans payable	$	444,375		$	420,625		Term loans payable	$	420,625		$	240,625
	Revolving credit facility	199,831			553,964			Revolving credit facility	553,964			660,730
	Senior notes	600,000			—			Receivables securitization facility	80,000			—
	Receivables securitization facility	10,000			80,000			Notes payable through October 2018 at weighted average interest rates of 1.7% and 2.0%, respectively	42,398			38,338
	Notes payable through October 2018 at weighted average interest rates of 1.8% and 1.7%, respectively	38,941			42,398			Other long-term debt at weighted average interest rates of 3.3% and 3.2%, respectively	21,491			16,383
	Other long-term debt at weighted average interest rates of 3.5% and 3.3%, respectively	18,908			21,491				1,118,478			956,076
		1,312,055			1,118,478			Less current maturities	(71,716		)	(29,524		)
									$	1,046,762		$	926,552
	Less current maturities	(61,123		)	(71,716		)
		$	1,250,932		$	1,046,762
Schedule Of Maturities Of Long-Term Obligations	'							'
								The scheduled maturities of long-term obligations outstanding at December 31, 2012 are as follows (in thousands):
								2013	$	71,716
								2014	54,611
								2015	138,323
								2016	847,759
								2017	848
								Thereafter	5,221
									$	1,118,478

Derivative_Instruments_and_Hed1

Derivative Instruments and Hedging Activities (Tables)	9 Months Ended															12 Months Ended
	Sep. 30, 2013															Dec. 31, 2012
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'															'
Terms Of Interest Rate Swap Agreements	'															'
	The following table summarizes the notional amounts and fair values of our designated cash flow hedges as of September 30, 2013 and December 31, 2012 (in thousands):															The following table summarizes the terms of our interest rate swap agreements as of December 31, 2012:
		Notional Amount				Fair Value at September 30, 2013 (USD)						Fair Value at December 31, 2012 (USD)				Notional Amount	Effective Date	Maturity Date	Fixed Interest Rate*
		30-Sep-13		31-Dec-12		Other Assets		Other Accrued Expenses		Other Noncurrent Liabilities		Other Accrued Expenses		Other Noncurrent Liabilities		USD $250,000,000	October 14, 2010	October 14, 2015	3.31%
	Interest rate swap agreements															USD $100,000,000	April 14, 2011	October 14, 2013	2.86%
	USD denominated	$	420,000	$	520,000	$	—	$	—	$	8,631	$	705	$	12,791	USD $60,000,000	November 30, 2011	October 31, 2016	2.95%
																USD $60,000,000	November 30, 2011	October 31, 2016	2.94%
	GBP denominated	£	50,000	£	50,000	—		—		937		—		2,135		USD $50,000,000	December 30, 2011	December 30, 2016	2.94%
																GBP £50,000,000	November 30, 2011	October 30, 2016	3.11%
	CAD denominated	C$	25,000	C$	25,000	52		—		—		—		12		CAD $25,000,000	December 30, 2011	March 24, 2016	3.17%
	Foreign currency forward contracts
	EUR denominated	€	149,976	—		—		7,964		—		—		—		* Includes applicable margin of 1.75% per annum on LIBOR or CDOR-based debt in effect as of December 31, 2012 under the Credit Agreement.
	GBP denominated	£	70,000	—		—		7,439		—		—		—
	Total cash flow hedges					$	52	$	15,403	$	9,568	$	705	$	14,938

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended												12 Months Ended
	Sep. 30, 2013												Dec. 31, 2012
Fair Value Disclosures [Abstract]	'												'
Financial Assets And Liabilities Measured At Fair Value On A Recurring Basis	'												'
	The following tables present information about our financial assets and liabilities measured at fair value on a recurring basis and indicate the fair value hierarchy of the valuation inputs we utilized to determine such fair value as of September 30, 2013 and December 31, 2012 (in thousands):												The following tables present information about our financial assets and liabilities measured at fair value on a recurring basis and indicate the fair value hierarchy of the valuation inputs we utilized to determine such fair value as of December 31, 2012 and 2011 (in thousands):
		Balance as of September 30, 2013			Fair Value Measurements as of September 30, 2013									Balance as of December 31, 2012				Fair Value Measurements as of December 31, 2012
					Level 1		Level 2			Level 3								Level 1		Level 2		Level 3
	Assets:												Assets:
	Cash surrender value of life insurance	$	23,847		$	—	$	23,847		$	—		Cash surrender value of life insurance	$	19,492			$	—	$	19,492	$	—
	Interest rate swaps	52					52						Total Assets	$	19,492			$	—	$	19,492	$	—
	Total Assets	$	23,899		$	—	$	23,899		$	—		Liabilities:
													Contingent consideration liabilities	$	90,009			$	—	$	—	$	90,009
	Liabilities:
	Contingent consideration liabilities	$	54,485		$	—	$	—		$	54,485		Deferred compensation liabilities	19,843				—		19,843		—
	Deferred compensation liabilities	23,572			—		23,572			—			Interest rate swaps	15,643				—		15,643		—
	Foreign currency forward contracts	15,403			—		15,403			—			Total Liabilities	$	125,495			$	—	$	35,486	$	90,009
	Interest rate swaps	9,606			—		9,606			—
	Total Liabilities	$	103,066		$	—	$	48,581		$	54,485			Balance as of December 31, 2011				Fair Value Measurements as of December 31, 2011
																		Level 1		Level 2		Level 3
													Assets:
													Cash surrender value of life insurance	$	13,413			$	—	$	13,413	$	—
		Balance as of December 31, 2012			Fair Value Measurements as of December 31, 2012
					Level 1		Level 2			Level 3			Total Assets	$	13,413			$	—	$	13,413	$	—
	Assets:
	Cash surrender value of life insurance	$	19,492		$	—	$	19,492		$	—		Liabilities:
													Contingent consideration liabilities	$	82,382			$	—	$	—	$	82,382
	Total Assets	$	19,492		$	—	$	19,492		$	—
													Deferred compensation liabilities	14,071				—		14,071		—
	Liabilities:
	Contingent consideration liabilities	$	90,009		$	—	$	—		$	90,009		Interest rate swaps	10,576				—		10,576		—
	Deferred compensation liabilities	19,843			—		19,843			—			Total Liabilities	$	107,029			$	—	$	24,647	$	82,382
	Interest rate swaps	15,643			—		15,643			—
	Total Liabilities	$	125,495		$	—	$	35,486		$	90,009
Significant Unobservable Inputs Used In Fair Value Measurements	'												'
	The significant unobservable inputs used in the fair value measurements of our Level 3 contingent consideration liabilities were as follows:												The significant unobservable inputs used in the fair value measurements of our Level 3 contingent consideration liabilities were as follows:
	Unobservable Input	September 30, 2013 Weighted Average		December 31, 2012 Weighted Average										December 31,
	Probability of achieving payout targets	71.7	%	79.7	%									2012			2011
	Discount rate	6.5	%	6.6	%								Unobservable Input	(Weighted Average)
													Probability of achieving payout targets	79.7	%		78.1	%
													Discount rate	6.6	%		3	%
Changes In Fair Value Of Contingent Consideration Obligations	'												'
	Changes in the fair value of our contingent consideration liabilities for the three and nine months ended September 30, 2013 and 2012 were as follows (in thousands):												Changes in the fair value of our contingent consideration obligations are as follows (in thousands):
		Three Months Ended					Nine Months Ended						Balance as of January 1, 2011	$	2,000
		September 30,					September 30,
		2013			2012		2013			2012			Contingent consideration liabilities recorded for business acquisitions	81,239
	Beginning balance	$	49,473		$	88,037	$	90,009		$	82,382
													Decrease in fair value included in earnings	(1,408		)
	Contingent consideration liabilities recorded for business acquisitions	1,204			—		3,854			5,540			Exchange rate effects	551
	Payments	—			—		(38,349		)	(600		)	Balance as of December 31, 2011	$	82,382
	Loss included in earnings	712			1,892		1,765			1,787			Contingent consideration liabilities recorded for business acquisitions	5,456
	Exchange rate effects	3,096			2,353		(2,794		)	3,173			Payments	(3,100		)
													Increase in fair value included in earnings	1,643
	Ending balance	$	54,485		$	92,282	$	54,485		$	92,282
													Exchange rate effects	3,628
													Balance as of December 31, 2012	$	90,009

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	9 Months Ended			12 Months Ended
	Sep. 30, 2013			Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]	'			'
Future Minimum Lease Commitments	'			'
	The future minimum lease commitments under these leases at September 30, 2013 are as follows (in thousands):			The future minimum lease commitments under these leases at December 31, 2012 are as follows (in thousands):
	Three months ending December 31, 2013	$	28,271	Years ending December 31:
				2013	$	99,345
	Years ending December 31:
	2014	106,631		2014	88,494
	2015	94,988		2015	78,536
	2016	76,776		2016	62,795
	2017	60,730		2017	51,159
	2018	47,713		Thereafter	156,506
	Thereafter	145,446		Future Minimum Lease Payments	$	536,835
	Future Minimum Lease Payments	$	560,555

Business_Combinations_Tables

Business Combinations (Tables)	9 Months Ended													12 Months Ended
	Sep. 30, 2013													Dec. 31, 2012
Business Combinations [Abstract]	'													'
Purchase Price Allocations For Acquisitions	'													'
	The preliminary purchase price allocations for the acquisitions completed during the nine months ended September 30, 2013 and the year ended December 31, 2012 are as follows (in thousands):													The purchase price allocations for the acquisitions completed during 2012 and 2011 are as follows (in thousands):
		Nine Months Ended September 30, 2013									Year Ended				Year Ended December 31,
		Sator			Other Acquisitions			Total			31-Dec-12				2012			2011
	Receivables	$	61,639		$	38,329		$	99,968		$	15,473			(Preliminary)			ECP			Other Acquisitions			Total
														Receivables	$	15,473		$	54,225		$	23,538		$	77,763
	Receivable reserves	(8,563		)	(3,023		)	(11,586		)	(1,459		)
	Inventory	71,784			24,119			95,903			62,305			Receivable reserves	(1,459		)	(3,832		)	(1,121		)	(4,953		)
														Inventory	62,305			93,835			59,846			153,681
	Prepaid expenses and other current assets	7,184			2,027			9,211			201
														Prepaid expenses and other current assets	201			3,189			2,820			6,009
	Property and equipment	19,484			12,517			32,001			31,930
														Property and equipment	31,930			41,830			10,614			52,444
	Goodwill	139,158			88,103			227,261			201,742
														Goodwill	201,742			332,891			105,177			438,068
	Other intangibles	49,978			4,868			54,846			655
														Other intangibles	655			43,723			7,683			51,406
	Other assets	2,049			1,232			3,281			187
														Other assets	187			13			9,420			9,433
	Deferred income taxes	(15,222		)	49			(15,173		)	428
														Deferred income taxes	428			(13,218		)	7,235			(5,983		)
	Current liabilities assumed	(49,593		)	(34,438		)	(84,031		)	(22,910		)
	Debt assumed	—			(664		)	(664		)	(3,989		)	Current liabilities assumed	(22,910		)	(135,390		)	(17,257		)	(152,647		)
														Debt assumed	(3,989		)	(13,564		)	—			(13,564		)
	Other noncurrent liabilities assumed	(5,074		)	—			(5,074		)	—
														Other noncurrent liabilities assumed	—			—			(619		)	(619		)
	Contingent consideration liabilities	—			(3,854		)	(3,854		)	(5,456		)
														Contingent consideration liabilities	(5,456		)	(77,539		)	(3,700		)	(81,239		)
	Other purchase price obligations	—			(86		)	(86		)	(1,647		)	Other purchase price obligations	(1,647		)	(4,136		)	(4,510		)	(8,646		)
														Notes issued	(15,990		)	(28,302		)	(5,917		)	(34,219		)
	Notes issued	—			(6,782		)	(6,782		)	(15,990		)	Cash used in acquisitions, net of cash acquired	$	261,470		$	293,725		$	193,209		$	486,934
	Cash used in acquisitions, net of cash acquired	$	272,824		$	122,397		$	395,221		$	261,470
Pro Forma Effect Of Businesses Acquired	'													'
	The following pro forma summary presents the effect of the businesses acquired during the nine months ended September 30, 2013 as though they had been acquired as of January 1, 2012 and the effect of the businesses acquired during the year ended December 31, 2012 as though they had been acquired as of January 1, 2011. The pro forma adjustments are based upon unaudited financial information of the acquired entities (in thousands, except per share data):													The following pro forma summary presents the effect of the businesses acquired during the year ended December 31, 2012 as though the businesses had been acquired as of January 1, 2011, the businesses acquired during the year ended December 31, 2011 as though they had been acquired as of January 1, 2010 and the businesses acquired during the year ended December 31, 2010 as though they had been acquired as of January 1, 2009. The pro forma adjustments are based upon unaudited financial information of the acquired entities (in thousands, except per share data):
		Three Months Ended						Nine Months Ended							Year Ended December 31,
		September 30,						September 30,							2012			2011			2010
		2013			2012			2013			2012			Revenue, as reported	$	4,122,930		$	3,269,862		$	2,469,881
	Revenue, as reported	$	1,298,094		$	1,016,707		$	3,745,839		$	3,055,015
														Revenue of purchased businesses for the period prior to acquisition:
	Revenue of purchased businesses for the period prior to acquisition:													ECP	—			407,042			420,769
	Sator	—			89,991			126,309			276,656
														Other acquisitions	202,144			466,002			504,044
	Other acquisitions	13,344			93,311			113,011			349,180
														Pro forma revenue	$	4,325,074		$	4,142,906		$	3,394,694
	Pro forma revenue	$	1,311,438		$	1,200,009		$	3,985,159		$	3,680,851
														Income from continuing operations, as reported	$	261,225		$	210,264		$	167,118
	Net income, as reported	$	73,445		$	54,048		$	233,759		$	199,037		Net income of purchased businesses for the period prior to acquisition, including pro forma purchase accounting adjustments:
														ECP	—			21,858			9,669
	Net income of purchased businesses for the period prior to acquisition, including pro forma purchase accounting adjustments:
	Sator	—			1,465			5,345			4,742			Other acquisitions	12,674			27,396			12,996
	Other acquisitions	1,791			4,396			7,812			18,822			Pro forma income from continuing operations	$	273,899		$	259,518		$	189,783
	Pro forma net income	$	75,236		$	59,909		$	246,916		$	222,601		Basic earnings per share from continuing operations, as reported	$	0.88		$	0.72		$	0.58
														Effect of purchased businesses for the period prior to acquisition:
	Earnings per share-basic, as reported	$	0.24		$	0.18		$	0.78		$	0.67		ECP	—			0.07			0.03
	Effect of purchased businesses for the period prior to acquisition:													Other acquisitions	0.04			0.09			0.05
	Sator	—			0			0.02			0.02
														Pro forma basic earnings per share from continuing operations (a)	$	0.93		$	0.89		$	0.66
	Other acquisitions	0.01			0.01			0.03			0.06
														Diluted earnings per share from continuing operations, as reported	$	0.87		$	0.71		0.57
	Pro forma earnings per share-basic (a)	$	0.25		$	0.2		$	0.83		$	0.75
														Effect of purchased businesses for the period prior to acquisition:
														ECP	—			0.07			0.03
	Earnings per share-diluted, as reported	$	0.24		$	0.18		$	0.77		$	0.66
														Other acquisitions	0.04			0.09			0.04
	Effect of purchased businesses for the period prior to acquisition:
	Sator	—			0			0.02			0.02			Pro forma diluted earnings per share from continuing operations (a)	$	0.91		$	0.87		$	0.65
	Other acquisitions	0.01			0.01			0.03			0.06
														(a) The sum of the individual earnings per share amounts may not equal the total due to rounding.
	Pro forma earnings per share-diluted (a)	$	0.25		$	0.2		$	0.81		$	0.74
	(a) The sum of the individual earnings per share amounts may not equal the total due to rounding.

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended									12 Months Ended
	Sep. 30, 2013									Dec. 31, 2012
Earnings Per Share [Abstract]	'									'
Computation Of Earnings Per Share	'									'
	The following chart sets forth the computation of earnings per share (in thousands, except per share amounts):									The following chart sets forth the computation of earnings per share (in thousands, except per share amounts):
		Three Months Ended				Nine Months Ended					Year Ended December 31,
		September 30,				September 30,					2012			2011			2010
		2013		2012		2013		2012		Income from continuing operations	$	261,225		$	210,264		$	167,118
	Net income	$	73,445	$	54,048	$	233,759	$	199,037
										Denominator for basic earnings per share—Weighted-average shares outstanding	295,810			292,252			286,542
	Denominator for basic earnings per share—weighted average shares outstanding	300,223		296,437		299,213		295,338
										Effect of dilutive securities:
	Effect of dilutive securities:									RSUs	479			182			—
	RSUs	883		430		775		436
										Stock options	4,346			4,250			5,118
	Stock options	3,564		4,241		3,765		4,398
										Restricted stock	58			66			54
	Restricted stock	15		64		18		54
										Denominator for diluted earnings per share—Adjusted weighted-average shares outstanding	300,693			296,750			291,714
	Denominator for diluted earnings per share—Adjusted weighted average shares outstanding	304,685		301,172		303,771		300,226
										Basic earnings per share from continuing operations	$	0.88		$	0.72		$	0.58
	Earnings per share, basic	$	0.24	$	0.18	$	0.78	$	0.67
										Diluted earnings per share from continuing operations	$	0.87		$	0.71		$	0.57
	Earnings per share, diluted	$	0.24	$	0.18	$	0.77	$	0.66
Schedule Of Antidilutive Securities Excluded From Computation Of Diluted Earnings Per Share	'									'
										The following table sets forth the number of employee stock-based compensation awards outstanding but not included in the computation of diluted earnings per share because their effect would have been antidilutive (in thousands):
											Year Ended December 31,
											2012		2011			2010
										Antidilutive securities:
										Stock options	—		2,340			5,714
										Restricted stock	—		—			80

Income_Taxes_Income_Taxes_Tabl

Income Taxes Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2012
Income Tax Disclosure [Abstract]	'
Schedule Of Components Of Income Tax Expense (Benefit)	'
	The provision for income taxes consists of the following components (in thousands):
		Year Ended December 31,
		2012				2011				2010
	Current:
	Federal	$	110,825			$	97,887			$	75,009
	State	19,693				14,435				16,552
	Foreign	13,202				3,883				2,483
		$	143,720			$	116,205			$	94,044
	Deferred:
	Federal	$	5,824			$	8,376			$	8,928
	State	(647		)		919				598
	Foreign	(955		)		7				(563		)
		$	4,222			$	9,302			$	8,963
	Provision for income taxes	$	147,942			$	125,507			$	103,007
Schedule Of Income Before Income Tax, Domestic and Foreign	'
	Income taxes have been based on the following components of income from continuing operations before provision for income taxes (in thousands):
		Year Ended December 31,
		2012				2011				2010
	Domestic	$	348,150			$	319,305			$	264,438
	Foreign	61,017				16,466				5,687
		$	409,167			$	335,771			$	270,125
Schedule Of Effective Income Tax Rate Reconciliation	'
	The U.S. federal statutory rate is reconciled to the effective tax rate as follows:
		Year Ended December 31,
		2012			2011			2010
	U.S. federal statutory rate	35	%		35	%		35	%
	State income taxes, net of state credits and federal tax impact	3.1	%		3.1	%		3.4	%
	Impact of international operations	(2.3	)%		(0.8	)%		(0.3	)%
	Non-deductible expenses	0.8	%		0.7	%		0.3	%
	Federal production incentives and credits	(0.3	)%		(0.4	)%		(0.2	)%
	Revaluation of deferred taxes	(0.3	)%		—	%		(0.5	)%
	Other, net	0.2	%		(0.2	)%		0.4	%
	Effective tax rate	36.2	%		37.4	%		38.1	%
Schedule Of Deferred Tax Assets and Liabilities	'
	The significant components of our deferred tax assets and liabilities are as follows (in thousands):
		December 31,
		2012				2011
	Deferred Tax Assets:
	Inventory	$	29,523			$	22,267
	Accrued expenses and reserves	27,361				18,357
	Accounts receivable	10,037				10,860
	Stock-based compensation	9,442				8,945
	Qualified and nonqualified retirement plans	7,476				5,157
	Net operating loss carryforwards	4,451				4,722
	Interest rate swaps	5,461				3,679
	Other	4,711				8,621
		98,462				82,608
	Less valuation allowance	(1,631		)		(1,911		)
	Total deferred tax assets	$	96,831			$	80,697
	Deferred Tax Liabilities:
	Goodwill and other intangible assets	$	64,704			$	46,373
	Property and equipment	48,994				44,535
	Trade name	30,336				32,592
	Other	1,428				1,864
	Total deferred tax liabilities	$	145,462			$	125,364
	Net deferred tax liability	$	(48,631	)		$	(44,667	)
Schedule Of Deferred Tax Assets And Liabilities Classification	'
	Deferred tax assets and liabilities are reflected on our Consolidated Balance Sheets as follows (in thousands):
		December 31,
		2012				2011
	Current deferred tax assets	$	53,485			$	45,690
	Noncurrent deferred tax assets	164				—
	Current deferred tax liabilities	5				1,561
	Noncurrent deferred tax liabilities	102,275				88,796
Schedule Of Unrecognized Tax Benefits Rollforward	'
	A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows (in thousands):
		2012				2011				2010
	Balance at January 1	$	5,497			$	5,441			$	8,526
	Additions based on tax positions related to the current year	973				952				713
	Additions for tax positions of prior years	167				192				281
	Reductions for tax positions of prior years	(2,379		)		—				(86		)
	Reductions for tax positions of prior years—timing differences	—				—				(2,041		)
	Lapse of statutes of limitations	(998		)		(892		)		(1,952		)
	Settlements with taxing authorities	(957		)		(196		)		—
	Balance at December 31	$	2,303			$	5,497			$	5,441

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended																			12 Months Ended
	Sep. 30, 2013																			Dec. 31, 2012
Equity [Abstract]	'																			'
Schedule Of Accumulated Other Comprehensive Income (Loss)	'																			'
	Changes in Accumulated Other Comprehensive Income were as follows (in thousands):																			The components of Accumulated Other Comprehensive Income (Loss) are as follows (in thousands):
		Three Months Ended									Three Months Ended										Foreign			Unrealized (Loss)			Unrealized Gain			Accumulated
		30-Sep-13									30-Sep-12										Currency			Gain			(Loss)			Other
		Foreign			Unrealized  (Loss)			Accumulated			Foreign			Unrealized  (Loss)			Accumulated				Translation			on Interest Rate			on Pension Plan			Comprehensive
		Currency Translation			Gain			Other			Currency			Gain			Other							Swaps						(Loss) Income
					on Cash Flow Hedges			Comprehensive			Translation			on Cash Flow Hedges			Comprehensive			Balance at January 1, 2010	$	(876	)	$	(6,536	)	$	15		$	(7,397	)
								Income (Loss)									Income (Loss)
	Beginning balance	$	(11,334	)	$	(6,730	)	$	(18,064	)	$	265		$	(9,881	)	$	(9,616	)	Pretax income	3,078			3,230			—			6,308
	Pretax income (loss)	28,514			(15,315		)	13,199			10,182			(3,557		)	6,625			Income tax expense	—			(1,054		)	—			(1,054		)
	Income tax effect	—			5,647			5,647			—			1,259			1,259			Reversal of unrealized (gain) loss	—			10,377			(15		)	10,362
	Reclassification of unrealized loss	—			15,956			15,956			—			1,641			1,641			Reversal of deferred income taxes	—			(3,841		)	—			(3,841		)
	Reclassification of deferred income taxes	—			(5,849		)	(5,849		)	—			(585		)	(585		)	Balance at December 31, 2010	$	2,202		$	2,176		$	—		$	4,378
	Hedge ineffectiveness	—			293			293			—			—			—			Pretax loss	(4,273		)	(19,391		)	—			(23,664		)
	Income tax effect	—			(107		)	(107		)	—			—			—			Income tax benefit	—			6,847			—			6,847
	Ending balance	$	17,180		$	(6,105	)	$	11,075		$	10,447		$	(11,123	)	$	(676	)	Reversal of unrealized loss	—			5,641			—			5,641
																				Reversal of deferred income taxes	—			(2,019		)	—			(2,019		)
																				Hedge ineffectiveness	—			(225		)	—			(225		)
		Nine Months Ended									Nine Months Ended
		30-Sep-13									30-Sep-12									Income tax benefit	—			81			—			81
		Foreign			Unrealized  (Loss)			Accumulated			Foreign			Unrealized  (Loss)			Accumulated
		Currency			Gain			Other			Currency			Gain			Other			Balance at December 31, 2011	$	(2,071	)	$	(6,890	)	$	—		$	(8,961	)
		Translation			on Cash Flow Hedges			Comprehensive			Translation			on Cash Flow Hedges			Comprehensive
								Income (Loss)									Income (Loss)			Pretax income (loss)	12,921			(11,313		)	—			1,608
	Beginning balance	$	10,850		$	(10,091	)	$	759		$	(2,071	)	$	(6,890	)	$	(8,961	)
																				Income tax benefit	—			3,962			—			3,962
	Pretax income (loss)	6,330			(14,170		)	(7,840		)	12,518			(11,266		)	1,252
																				Reversal of unrealized loss	—			6,439			—			6,439
	Income tax effect	—			5,305			5,305			—			3,981			3,981
																				Reversal of deferred income taxes	—			(2,289		)	—			(2,289		)
	Reclassification of unrealized loss	—			19,771			19,771			—			4,753			4,753
																				Balance at December 31, 2012	$	10,850		$	(10,091	)	$	—		$	759
	Reclassification of deferred income taxes	—			(7,211		)	(7,211		)	—			(1,701		)	(1,701		)
	Hedge ineffectiveness	—			460			460			—			—			—
	Income tax effect	—			(169		)	(169		)	—			—			—
	Ending balance	$	17,180		$	(6,105	)	$	11,075		$	10,447		$	(11,123	)	$	(676	)

Segment_and_Geographic_Informa1

Segment and Geographic Information (Tables)	9 Months Ended									12 Months Ended
	Sep. 30, 2013									Dec. 31, 2012
Segment Reporting [Abstract]	'									'
Schedule Of Financial Performance By Reportable Segment	'									'
	The following table presents our financial performance, including revenue, earnings before interest, taxes, depreciation and amortization ("EBITDA"), and depreciation and amortization by reportable segment for the periods indicated (in thousands):									The following table presents our financial performance, including revenue, earnings before interest, taxes, depreciation and amortization (“EBITDA”), and depreciation and amortization by reportable segment for the periods indicated (in thousands):
		Three Months Ended				Nine Months Ended					Year Ended December 31,
		September 30,				September 30,					2012		2011		2010
		2013		2012		2013		2012		Revenue
	Revenue									North America	$	3,426,858	$	3,131,376	$	2,469,881
	North America	$	928,307	$	835,324	$	2,865,613	$	2,547,743
										Europe	696,072		138,486		—
	Europe	369,787		181,383		880,226		507,272
										Total revenue	$	4,122,930	$	3,269,862	$	2,469,881
	Total revenue	$	1,298,094	$	1,016,707	$	3,745,839	$	3,055,015
										EBITDA
	EBITDA									North America	$	440,448	$	405,924	$	339,869
	North America	$	108,314	$	89,265	$	362,281	$	331,140
										Europe	70,099		12,144		—
	Europe	38,088		20,079		95,920		55,669
										Total EBITDA	$	510,547	$	418,068	$	339,869
	Total EBITDA	$	146,402	$	109,344	$	458,201	$	386,809
										Depreciation and Amortization
	Depreciation and Amortization									North America	$	59,132	$	52,481	$	41,428
	North America	$	16,417	$	14,830	$	48,555	$	43,603
										Europe	11,033		2,024		—
	Europe	5,740		3,298		13,313		7,971
										Total depreciation and amortization	$	70,165	$	54,505	$	41,428
	Total depreciation and amortization	$	22,157	$	18,128	$	61,868	$	51,574
Reconciliation Of Earnings Before Interest Taxes Depreciation And Amortization To Net Income Table [Text Block]	'									'
	The table below provides a reconciliation from EBITDA to Net Income (in thousands):									The table below provides a reconciliation from EBITDA to Income from Continuing Operations (in thousands):
		Three Months Ended				Nine Months Ended					Year Ended December 31,
		September 30,				September 30,					2012		2011		2010
		2013		2012		2013		2012		EBITDA	$	510,547	$	418,068	$	339,869
	EBITDA	$	146,402	$	109,344	$	458,201	$	386,809
										Depreciation and amortization	70,165		54,505		41,428
	Depreciation and amortization	22,157		18,128		61,868		51,574
										Interest expense, net	31,215		22,447		28,316
	Interest expense, net	15,200		7,964		36,287		22,687
										Loss on debt extinguishment	—		5,345		—
	Loss on debt extinguishment	—		—		2,795		—
										Provision for income taxes	147,942		125,507		103,007
	Provision for income taxes	35,600		29,204		123,492		113,511
										Income from continuing operations	$	261,225	$	210,264	$	167,118
	Net income	$	73,445	$	54,048	$	233,759	$	199,037
Schedule Of Capital Expenditures By Reportable Segment	'									'
	The following table presents capital expenditures, which includes additions to property and equipment, by reportable segment (in thousands):									The following table presents capital expenditures, which includes additions to property and equipment, by reportable segment (in thousands):
		Three Months Ended				Nine Months Ended					Year Ended December 31,
		September 30,				September 30,					2012		2011		2010
		2013		2012		2013		2012		Capital Expenditures
	Capital Expenditures									North America	$	73,331	$	84,856	$	61,438
	North America	$	14,960	$	15,015	$	48,662	$	49,521
										Europe	14,924		1,560		—
	Europe	6,015		4,006		12,464		11,115
											$	88,255	$	86,416	$	61,438
		$	20,975	$	19,021	$	61,126	$	60,636
Schedule Of Assets By Reportable Segment	'									'
	The following table presents assets by reportable segment (in thousands):									The following table presents assets by reportable segment (in thousands):
		September 30,		December 31,							December 31,
		2013		2012							2012		2011		2010
	Receivables, net									Receivables, net
	North America	$	260,413	$	241,627					North America	$	241,627	$	230,871	$	191,085
	Europe	178,387		70,181						Europe	70,181		50,893		—
	Total receivables, net	438,800		311,808						Total receivables, net	311,808		281,764		191,085
	Inventory									Inventory
	North America	725,213		750,565						North America	750,565		636,145		492,688
	Europe	292,956		150,238						Europe	150,238		100,701		—
	Total inventory	1,018,169		900,803						Total inventory	900,803		736,846		492,688
	Property and Equipment, net									Property and Equipment, net
	North America	441,940		434,010						North America	434,010		380,282		331,312
	Europe	89,957		60,369						Europe	60,369		43,816		—
	Total property and equipment, net	531,897		494,379						Total property and equipment, net	494,379		424,098		331,312
	Other unallocated assets	2,372,193		2,016,466						Other unallocated assets	2,016,466		1,756,996		1,284,424
	Total assets	$	4,361,059	$	3,723,456					Total assets	$	3,723,456	$	3,199,704	$	2,299,509
Schedule Of Revenue By Geographic Area	'									'
	The following table sets forth our revenue by geographic area (in thousands):									The following table sets forth our revenue by geographic area (in thousands):
		Three Months Ended				Nine Months Ended					Year Ended December 31,
		September 30,				September 30,					2012		2011		2010
		2013		2012		2013		2012		Revenue
	Revenue									United States	$	3,209,024	$	2,952,620	$	2,366,224
	United States	$	868,052	$	784,270	$	2,672,545	$	2,394,581
										United Kingdom	696,072		138,486		—
	United Kingdom	266,384		181,383		708,089		507,272
										Other countries	217,834		178,756		103,657
	Other countries	163,658		51,054		365,205		153,162
											$	4,122,930	$	3,269,862	$	2,469,881
		$	1,298,094	$	1,016,707	$	3,745,839	$	3,055,015
Schedule Of Tangible Long-Lived Assets By Geographic Area	'									'
	The following table sets forth our tangible long-lived assets by geographic area (in thousands):									The following table sets forth our tangible long-lived assets by geographic area (in thousands):
		September 30,		December 31,							December 31,
		2013		2012							2012		2011
	Long-lived Assets									Long-lived Assets
	United States	$	411,957	$	408,244					United States	$	408,244	$	360,961
	United Kingdom	69,309		60,369						United Kingdom	60,369		43,816
	Other countries	50,631		25,766						Other countries	25,766		19,321
		$	531,897	$	494,379						$	494,379	$	424,098
Schedule Of Revenue By Product Category	'									'
	The following table sets forth our revenue by product category (in thousands):									The following table sets forth our revenue by product category (in thousands):
		Three Months Ended				Nine Months Ended					Year Ended December 31,
		September 30,				September 30,					2012		2011		2010
		2013		2012		2013		2012		Aftermarket, other new and refurbished products	$	2,286,853	$	1,634,003	$	1,236,806
	Aftermarket, other new and refurbished products	$	793,925	$	562,750	$	2,199,009	$	1,676,006
										Recycled, remanufactured and related products and services	1,277,023		1,115,088		888,320
	Recycled, remanufactured and related products and services	349,411		317,877		1,060,681		967,250
										Other	559,054		520,771		344,755
	Other	154,758		136,080		486,149		411,759
											$	4,122,930	$	3,269,862	$	2,469,881
		$	1,298,094	$	1,016,707	$	3,745,839	$	3,055,015

Selected_Quarterly_Data_Select

Selected Quarterly Data Selected Quarterly Data (Tables)	12 Months Ended
	Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]	'
Summary Of Selected Quarterly Data	'
	The following table represents unaudited selected quarterly financial data for the two years ended December 31, 2012. Beginning with quarter ended December 31, 2011, the selected quarterly financial data includes the results of ECP, which was acquired effective October 1, 2011. The operating results for any quarter are not necessarily indicative of the results for any future period.
		Quarter Ended
	(In thousands, except per share data)	Mar. 31		Jun. 30		Sep. 30		Dec. 31
	2011
	Revenue	$	786,648	$	759,684	$	783,898	$	939,632
	Gross margin(1)	343,646		322,236		334,322		391,789
	Operating income(1)	107,371		78,486		85,488		90,138
	Net income(2)	58,182		46,706		49,231		56,145
	Basic earnings per share(3)	$	0.2	$	0.16	$	0.17	$	0.19
	Diluted earnings per share(3)	$	0.2	$	0.16	$	0.17	$	0.19
		Quarter Ended
	(In thousands, except per share data)	Mar. 31		Jun. 30		Sep. 30		Dec. 31
	2012
	Revenue	$	1,031,777	$	1,006,531	$	1,016,707	$	1,067,915
	Gross margin(1)	447,383		421,931		409,705		445,121
	Operating income(1)	133,608		108,567		91,434		104,344
	Net income(2)	80,991		63,998		54,048		62,188
	Basic earnings per share(3)	$	0.28	$	0.22	$	0.18	$	0.21
	Diluted earnings per share(3)	$	0.27	$	0.21	$	0.18	$	0.21
	-1	Gross margin and operating income during the quarters ended March 31, 2012, June 30, 2012, September 30, 2012 and December 31, 2012 include gains of $8.3 million, $8.4 million, $0.5 million and $0.7 million, respectively, resulting from lawsuit settlements with certain of our aftermarket product suppliers as discussed in Note 8, "Commitments and Contingencies."
	-2	Net income during the quarters ended June 30, 2011 and December 31, 2011 includes a gain of $1.6 million and a loss of $0.2 million, respectively, for changes in fair value of our contingent consideration liabilities. The quarters ended March 31, 2012 and December 31, 2012 include gains for changes in fair value of our contingent consideration liabilities of $1.3 million and $0.2 million, respectively, while the quarters ended June 30, 2012 and September 30, 2012 include losses of $1.2 million and $1.9 million, respectively. See Note 7, "Fair Value Measurements," for further information on these changes in fair value of the contingent consideration obligations recorded in earnings during the periods.
	-3	The sum of the quarters may not equal the total of the respective year's earnings per share on either a basic or diluted basis due to changes in weighted average shares outstanding throughout the year.

Condensed_Consolidating_Financ1

Condensed Consolidating Financial Information Condensed Consolidating Financial Information (Tables)	9 Months Ended																12 Months Ended
	Sep. 30, 2013																Dec. 31, 2012
Condensed Consolidating Financial Information [Abstract]	'																'
Consolidated Condensed Balance Sheets	'																'
	LKQ CORPORATION AND SUBSIDIARIES																LKQ CORPORATION AND SUBSIDIARIES
	Condensed Consolidating Balance Sheets																Condensed Consolidating Balance Sheets
	(In thousands)																(In thousands)
																		31-Dec-12
		September 30, 2013																Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
		Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated			Assets
	Assets																Current Assets:
	Current Assets:																Cash and equivalents	$	18,396		$	18,253		$	23,121		$	—		$	59,770
	Cash and equivalents	$	35,966		$	12,218		$	59,153		$	—		$	107,337
																	Receivables, net	—			94,435			217,373			—			311,808
	Receivables, net	929			123,256			314,615			—			438,800
																	Intercompany receivables, net	1,781			5,970			—			(7,751		)	—
	Intercompany receivables, net	4,719			—			1,236			(5,955		)	—
																	Inventory	—			690,365			210,438			—			900,803
	Inventory	—			666,819			351,350			—			1,018,169
																	Deferred income taxes	4,778			45,255			3,452			—			53,485
	Deferred income taxes	4,774			45,643			2,712			—			53,129
																	Prepaid income taxes	26,538			—			2,999			—			29,537
	Prepaid income taxes	11,444			—			2,381			—			13,825
																	Prepaid expenses and other current assets	1,065			16,608			11,275			—			28,948
	Prepaid expenses and other current assets	361			23,291			20,739			—			44,391
																	Total Current Assets	52,558			870,886			468,658			(7,751		)	1,384,351
	Total Current Assets	58,193			871,227			752,186			(5,955		)	1,675,651
																	Property and Equipment, net	970			408,944			84,465			—			494,379
	Property and Equipment, net	737			412,699			118,461			—			531,897
																	Intangible Assets:
	Intangible Assets:																Goodwill	—			1,226,718			463,566			—			1,690,284
	Goodwill	—			1,238,664			682,252			—			1,920,916
																	Other intangibles, net	—			61,815			44,900			—			106,715
	Other intangibles, net	—			57,398			97,031			—			154,429
																	Investment in Subsidiaries	1,923,997			142,334			—			(2,066,331		)	—
	Investment in Subsidiaries	2,303,747			254,421			—			(2,558,168		)	—
																	Intercompany Notes Receivable	711,624			39,239			—			(750,863		)	—
	Intercompany Notes Receivable	953,682			94,334			—			(1,048,016		)	—
																	Other Assets	41,692			17,830			3,528			(15,323		)	47,727
	Other Assets	55,236			20,055			15,453			(12,578		)	78,166
																	Total Assets	$	2,730,841		$	2,767,766		$	1,065,117		$	(2,840,268	)	$	3,723,456
	Total Assets	$	3,371,595		$	2,948,798		$	1,665,383		$	(3,624,717	)	$	4,361,059
																	Liabilities and Stockholders’ Equity
	Liabilities and Stockholders’ Equity																Current Liabilities:
	Current Liabilities:																Accounts payable	$	52		$	97,678		$	121,605		$	—		$	219,335
	Accounts payable	$	413		$	93,076		$	191,411		$	—		$	284,900
																	Intercompany payables, net	—			—			7,751			(7,751		)	—
	Intercompany payables, net	—			1,236			4,719			(5,955		)	—
																	Accrued expenses:
	Accrued expenses:																Accrued payroll-related liabilities	3,731			25,697			14,972			—			44,400
	Accrued payroll-related liabilities	4,636			38,172			23,558			—			66,366
																	Other accrued expenses	2,258			48,805			39,359			—			90,422
	Other accrued expenses	27,813			57,245			61,583			—			146,641
																	Income taxes payable	—			—			2,748			—			2,748
	Income taxes payable	—			—			16,473			—			16,473
																	Contingent consideration liabilities	—			1,518			40,737			—			42,255
	Contingent consideration liabilities	—			1,875			47,400			—			49,275
																	Other current liabilities	286			16,241			541			—			17,068
	Other current liabilities	286			14,339			3,110			—			17,735
																	Current portion of long-term obligations	32,300			9,940			29,476			—			71,716
	Current portion of long-term obligations	24,421			3,906			32,796			—			61,123
																	Total Current Liabilities	38,627			199,879			257,189			(7,751		)	487,944
	Total Current Liabilities	57,569			209,849			381,050			(5,955		)	642,513
																	Long-Term Obligations, Excluding Current Portion	691,670			7,549			347,543			—			1,046,762
	Long-Term Obligations, Excluding Current Portion	1,021,876			5,925			223,131			—			1,250,932
																	Intercompany Notes Payable	—			681,275			69,588			(750,863		)	—
	Intercompany Notes Payable	—			611,004			437,012			(1,048,016		)	—
Deferred Income Taxes																	—			102,702			14,896			(15,323		)	102,275
	Deferred Income Taxes	—			101,698			29,573			(12,578		)	118,693
Contingent Consideration Liabilities																	—			2,500			45,254			—			47,754
	Contingent Consideration Liabilities	—			733			4,477			—			5,210
Other Noncurrent Liabilities																	36,450			35,383			2,794			—			74,627
	Other Noncurrent Liabilities	38,044			44,893			6,668			—			89,605
Stockholders’ Equity																	1,964,094			1,738,478			327,853			(2,066,331		)	1,964,094
	Stockholders’ Equity	2,254,106			1,974,696			583,472			(2,558,168		)	2,254,106
Total Liabilities and Stockholders’ Equity																	$	2,730,841		$	2,767,766		$	1,065,117		$	(2,840,268	)	$	3,723,456
	Total Liabilities and Stockholders’ Equity	$	3,371,595		$	2,948,798		$	1,665,383		$	(3,624,717	)	$	4,361,059
LKQ CORPORATION AND SUBSIDIARIES
																Condensed Consolidating Balance Sheets
LKQ CORPORATION AND SUBSIDIARIES																(In thousands)
Condensed Consolidating Balance Sheets
(In thousands)																	31-Dec-11
																	Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
	December 31, 2012															Assets
	Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated			Current Assets:
Assets																Cash and equivalents	$	9,908		$	17,433		$	20,906		$	—		$	48,247
Current Assets:
Cash and equivalents	$	18,396		$	18,253		$	23,121		$	—		$	59,770		Receivables, net	—			214,805			66,959			—			281,764
Receivables, net	—			94,435			217,373			—			311,808			Intercompany receivables, net	2,416			—			4,966			(7,382		)	—
Intercompany receivables, net	1,781			5,970			—			(7,751		)	—			Inventory	—			595,223			141,623			—			736,846
Inventory	—			690,365			210,438			—			900,803			Deferred income taxes	3,049			40,068			2,573			—			45,690
Deferred income taxes	4,778			45,255			3,452			—			53,485			Prepaid income taxes	15,989			—			1,608			—			17,597
Prepaid income taxes	26,538			—			2,999			—			29,537			Prepaid expenses and other current assets	482			14,257			4,852			—			19,591
Prepaid expenses and other current assets	1,065			16,608			11,275			—			28,948			Total Current Assets	31,844			881,786			243,487			(7,382		)	1,149,735
Total Current Assets	52,558			870,886			468,658			(7,751		)	1,384,351			Property and Equipment, net	1,097			359,815			63,186			—			424,098
Property and Equipment, net	970			408,944			84,465			—			494,379			Intangible Assets:
																Goodwill	—			1,080,358			395,705			—			1,476,063
Intangible Assets:
Goodwill	—			1,226,718			463,566			—			1,690,284			Other intangibles, net	—			68,133			40,777			—			108,910
Other intangibles, net	—			61,815			44,900			—			106,715			Investment in Subsidiaries	1,602,727			124,578			—			(1,727,305		)	—
Investment in Subsidiaries	1,923,997			142,334			—			(2,066,331		)	—			Intercompany Notes Receivable	781,338			—			—			(781,338		)	—
Intercompany Notes Receivable	711,624			39,239			—			(750,863		)	—			Other Assets	35,283			15,771			2,324			(12,480		)	40,898
Other Assets	41,692			17,830			3,528			(15,323		)	47,727			Total Assets	$	2,452,289		$	2,530,441		$	745,479		$	(2,528,505	)	$	3,199,704
Total Assets	$	2,730,841		$	2,767,766		$	1,065,117		$	(2,840,268	)	$	3,723,456		Liabilities and Stockholders’ Equity
																Current Liabilities:
Liabilities and Stockholders’ Equity																Accounts payable	$	241		$	92,218		$	118,416		$	—		$	210,875
Current Liabilities:
Accounts payable	$	52		$	97,678		$	121,605		$	—		$	219,335		Intercompany payables, net	—			4,966			2,416			(7,382		)	—
Intercompany payables, net	—			—			7,751			(7,751		)	—			Accrued expenses:
																Accrued payroll-related liabilities	11,076			30,520			11,660			—			53,256
Accrued expenses:
Accrued payroll-related liabilities	3,731			25,697			14,972			—			44,400			Other accrued expenses	2,077			50,399			25,293			—			77,769
Other accrued expenses	2,258			48,805			39,359			—			90,422			Income taxes payable	914			—			6,348			—			7,262
Income taxes payable	—			—			2,748			—			2,748			Contingent consideration liabilities	—			600			—			—			600
Contingent consideration liabilities	—			1,518			40,737			—			42,255			Other current liabilities	305			11,723			6,379			—			18,407
Other current liabilities	286			16,241			541			—			17,068			Current portion of long-term obligations	16,080			2,253			11,191			—			29,524
Current portion of long-term obligations	32,300			9,940			29,476			—			71,716			Total Current Liabilities	30,693			192,679			181,703			(7,382		)	397,693
Total Current Liabilities	38,627			199,879			257,189			(7,751		)	487,944			Long-Term Obligations, Excluding Current Portion	749,125			6,498			170,929			—			926,552
Long-Term Obligations, Excluding Current Portion	691,670			7,549			347,543			—			1,046,762			Intercompany Notes Payable	—			750,545			30,793			(781,338		)	—
Intercompany Notes Payable	—			681,275			69,588			(750,863		)	—			Deferred Income Taxes	—			89,497			11,779			(12,480		)	88,796
Deferred Income Taxes	—			102,702			14,896			(15,323		)	102,275			Contingent Consideration Liabilities	—			3,111			78,671			—			81,782
Contingent Consideration Liabilities	—			2,500			45,254			—			47,754			Other Noncurrent Liabilities	28,386			30,404			2,006			—			60,796
Other Noncurrent Liabilities	36,450			35,383			2,794			—			74,627			Stockholders’ Equity	1,644,085			1,457,707			269,598			(1,727,305		)	1,644,085
Stockholders’ Equity	1,964,094			1,738,478			327,853			(2,066,331		)	1,964,094			Total Liabilities and Stockholders’ Equity	$	2,452,289		$	2,530,441		$	745,479		$	(2,528,505	)	$	3,199,704
Total Liabilities and Stockholders’ Equity	$	2,730,841		$	2,767,766		$	1,065,117		$	(2,840,268	)	$	3,723,456
Consolidated Condensed Statements of Income	'																'
	LKQ CORPORATION AND SUBSIDIARIES																LKQ CORPORATION AND SUBSIDIARIES
	Condensed Consolidating Statements of Operations																Condensed Consolidating Statements of Operations
	(In thousands)																(In thousands)
		Three Months Ended September 30, 2013																Year Ended December 31, 2012
		Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated				Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
	Revenue	$	—		$	876,862		$	450,505		$	(29,273	)	$	1,298,094		Revenue	$	—		$	3,236,507		$	976,710		$	(90,287	)	$	4,122,930
	Cost of goods sold	—			522,176			287,284			(29,273		)	780,187			Cost of goods sold	—			1,886,098			602,979			(90,287		)	2,398,790
	Gross margin	—			354,686			163,221			—			517,907			Gross margin	—			1,350,409			373,731			—			1,724,140
	Facility and warehouse expenses	—			79,565			28,784			—			108,349			Facility and warehouse expenses	—			287,036			60,881			—			347,917
	Distribution expenses	—			73,752			35,841			—			109,593			Distribution expenses	—			281,011			94,824			—			375,835
	Selling, general and administrative expenses	6,813			93,549			53,184			—			153,546			Selling, general and administrative expenses	21,098			346,596			127,897			—			495,591
	Restructuring and acquisition related expenses	—			411			1,795			—			2,206			Restructuring and acquisition related expenses	—			1,812			939			—			2,751
	Depreciation and amortization	65			14,014			6,739			—			20,818			Depreciation and amortization	296			49,782			14,015			—			64,093
	Operating (loss) income	(6,878		)	93,395			36,878			—			123,395			Operating (loss) income	(21,394		)	384,172			75,175			—			437,953
	Other expense (income):																Other (income) expense:
	Interest expense, net	13,335			81			1,784			—			15,200			Interest expense	24,272			308			6,849			—			31,429
	Intercompany interest (income) expense, net	(13,028		)	5,593			7,435			—			—			Intercompany interest (income) expense, net	(37,491		)	27,377			10,114			—			—
	Change in fair value of contingent consideration liabilities	—			(72		)	784			—			712			Change in fair value of contingent consideration liabilities	—			(1,943		)	3,586			—			1,643
	Other expense (income), net	45			(912		)	(695		)	—			(1,562		)	Interest and other income, net	(43		)	(3,638		)	(605		)	—			(4,286		)
	Total other expense, net	352			4,690			9,308			—			14,350			Total other (income) expense, net	(13,262		)	22,104			19,944			—			28,786
	(Loss) income before (benefit) provision for income taxes	(7,230		)	88,705			27,570			—			109,045			(Loss) income before (benefit) provision for income taxes	(8,132		)	362,068			55,231			—			409,167
	(Benefit) provision for income taxes	(2,867		)	33,973			4,494			—			35,600			(Benefit) provision for income taxes	(3,287		)	140,150			11,079			—			147,942
	Equity in earnings of subsidiaries	77,808			5,656			—			(83,464		)	—			Equity in earnings of subsidiaries	266,070			12,481			—			(278,551		)	—
	Net income	$	73,445		$	60,388		$	23,076		$	(83,464	)	$	73,445		Net income	$	261,225		$	234,399		$	44,152		$	(278,551	)	$	261,225
	LKQ CORPORATION AND SUBSIDIARIES																LKQ CORPORATION AND SUBSIDIARIES
	Condensed Consolidating Statements of Operations																Condensed Consolidating Statements of Operations
	(In thousands)																(In thousands)
		Three Months Ended September 30, 2012																Year Ended December 31, 2011
		Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated				Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
	Revenue	$	—		$	791,672		$	249,248		$	(24,213	)	$	1,016,707		Revenue	$	—		$	2,975,275		$	370,912		$	(76,325	)	$	3,269,862
	Cost of goods sold	—			477,842			153,373			(24,213		)	607,002			Cost of goods sold	—			1,721,419			232,775			(76,325		)	1,877,869
	Gross margin	—			313,830			95,875			—			409,705			Gross margin	—			1,253,856			138,137			—			1,391,993
	Facility and warehouse expenses	—			72,037			14,702			—			86,739			Facility and warehouse expenses	—			261,260			32,163			—			293,423
	Distribution expenses	—			69,758			23,894			—			93,652			Distribution expenses	—			257,395			30,231			—			287,626
	Selling, general and administrative expenses	4,876			85,360			30,813			—			121,049			Selling, general and administrative expenses	22,680			321,403			47,859			—			391,942
	Restructuring and acquisition related expenses	—			70			46			—			116			Restructuring and acquisition related expenses	—			3,438			4,152			—			7,590
	Depreciation and amortization	75			12,642			3,998			—			16,715			Depreciation and amortization	239			44,724			4,966			—			49,929
	Operating (loss) income	(4,951		)	73,963			22,422			—			91,434			Operating (loss) income	(22,919		)	365,636			18,766			—			361,483
	Other (income) expense:																Other (income) expense:
	Interest expense, net	6,350			47			1,567			—			7,964			Interest expense	21,839			99			2,369			—			24,307
	Intercompany interest (income) expense, net	(9,367		)	7,124			2,243			—			—			Intercompany interest (income) expense, net	(36,018		)	31,036			4,982			—			—
	Change in fair value of contingent consideration liabilities	—			(148		)	2,040			—			1,892			Loss on debt extinguishment	5,345			—			—			—			5,345
	Other income, net	(38		)	(1,220		)	(416		)	—			(1,674		)	Change in fair value of contingent consideration liabilities	(2,000		)	11			581			—			(1,408		)
	Total other (income) expense, net	(3,055		)	5,803			5,434			—			8,182			Interest and other income, net	(332		)	(1,979		)	(221		)	—			(2,532		)
	(Loss) income before (benefit) provision for income taxes	(1,896		)	68,160			16,988			—			83,252			Total other (income) expense, net	(11,166		)	29,167			7,711			—			25,712
	(Benefit) provision for income taxes	(1,228		)	27,844			2,588			—			29,204			(Loss) income before (benefit) provision for income taxes	(11,753		)	336,469			11,055			—			335,771
	Equity in earnings of subsidiaries	54,716			4,113			—			(58,829		)	—			(Benefit) provision for income taxes	(6,034		)	128,930			2,611			—			125,507
	Net income	$	54,048		$	44,429		$	14,400		$	(58,829	)	$	54,048		Equity in earnings of subsidiaries	215,983			3,036			—			(219,019		)	—
	LKQ CORPORATION AND SUBSIDIARIES																Net income	$	210,264		$	210,575		$	8,444		$	(219,019	)	$	210,264
	Condensed Consolidating Statements of Operations
	(In thousands)																LKQ CORPORATION AND SUBSIDIARIES
																	Condensed Consolidating Statements of Operations
		Nine Months Ended September 30, 2013															(In thousands)
		Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
	Revenue	$	—		$	2,698,008		$	1,133,369		$	(85,538	)	$	3,745,839			Year Ended December 31, 2010
																		Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
	Cost of goods sold	—			1,593,764			707,884			(85,538		)	2,216,110			Revenue	$	—		$	2,370,488		$	113,369		$	(13,976	)	$	2,469,881
	Gross margin	—			1,104,244			425,485			—			1,529,729			Cost of goods sold	—			1,324,924			65,453			(13,976		)	1,376,401
	Facility and warehouse expenses	—			240,389			71,091			—			311,480			Gross margin	—			1,045,564			47,916			—			1,093,480
	Distribution expenses	—			224,266			95,767			—			320,033			Facility and warehouse expenses	—			218,384			15,609			—			233,993
	Selling, general and administrative expenses	20,130			282,364			134,120			—			436,614			Distribution expenses	—			202,649			10,069			—			212,718
	Restructuring and acquisition related expenses	—			750			6,641			—			7,391			Selling, general and administrative expenses	20,873			272,797			16,558			—			310,228
	Depreciation and amortization	187			41,568			16,095			—			57,850			Restructuring and acquisition related expenses	—			668			—			—			668
Operating (loss) income	(20,317		)	314,907			101,771			—			396,361			Depreciation and amortization	93			36,184			1,719			—			37,996
Other (income) expense:																Operating (loss) income	(20,966		)	314,882			3,961			—			297,877
Interest expense, net	29,589			621			6,077			—			36,287
																Other (income) expense:
Intercompany interest (income) expense, net	(34,318		)	16,901			17,417			—			—			Interest expense	28,069			560			1,136			—			29,765
Loss on debt extinguishment	2,795			—			—			—			2,795			Intercompany interest (income) expense, net	(35,967		)	34,816			1,151			—			—
Change in fair value of contingent consideration liabilities	—			(936		)	2,701			—			1,765			Interest and other income, net	(129		)	(1,548		)	(336		)	—			(2,013		)
Other expense (income), net	172			(2,380		)	471			—			(1,737		)	Total other (income) expense, net	(8,027		)	33,828			1,951			—			27,752
Total other (income) expense, net	(1,762		)	14,206			26,666			—			39,110			(Loss) income before (benefit) provision for income taxes	(12,939		)	281,054			2,010			—			270,125
(Loss) income before (benefit) provision for income taxes	(18,555		)	300,701			75,105			—			357,251			(Benefit) provision for income taxes	(6,238		)	108,737			508			—			103,007
(Benefit) provision for income taxes	(7,199		)	115,625			15,066			—			123,492			Equity in earnings of subsidiaries	175,772			64			—			(175,836		)	—
Equity in earnings of subsidiaries	245,115			15,496			—			(260,611		)	—			Income from continuing operations	169,071			172,381			1,502			(175,836		)	167,118
Net income	$	233,759		$	200,572		$	60,039		$	(260,611	)	$	233,759		Discontinued operations:
																Income from discontinued operations, net of taxes	—			224			—			—			224
LKQ CORPORATION AND SUBSIDIARIES
Condensed Consolidating Statements of Operations																Gain on sale of discontinued operations, net of taxes	—			1,729			—			—			1,729
(In thousands)
																Income from discontinued operations	—			1,953			—			—			1,953
	Nine Months Ended September 30, 2012
	Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated			Net income	$	169,071		$	174,334		$	1,502		$	(175,836	)	$	169,071
Revenue	$	—		$	2,415,328		$	709,201		$	(69,514	)	$	3,055,015
Cost of goods sold	—			1,410,926			434,584			(69,514		)	1,775,996
Gross margin	—			1,004,402			274,617			—			1,279,019
Facility and warehouse expenses	—			211,861			42,178			—			254,039
Distribution expenses	—			210,315			67,076			—			277,391
Selling, general and administrative expenses	16,082			256,001			92,378			—			364,461
Restructuring and acquisition related expenses	—			1,808			750			—			2,558
Depreciation and amortization	222			36,703			10,036			—			46,961
Operating (loss) income	(16,304		)	287,714			62,199			—			333,609
Other (income) expense:
Interest expense, net	18,262			20			4,405			—			22,687
Intercompany interest (income) expense, net	(27,964		)	20,987			6,977			—			—
Change in fair value of contingent consideration liabilities	—			(83		)	1,870			—			1,787
Other income, net	(32		)	(2,665		)	(716		)	—			(3,413		)
Total other (income) expense, net	(9,734		)	18,259			12,536			—			21,061
(Loss) income before (benefit) provision for income taxes	(6,570		)	269,455			49,663			—			312,548
(Benefit) provision for income taxes	(2,924		)	106,473			9,962			—			113,511
Equity in earnings of subsidiaries	202,683			9,449			—			(212,132		)	—
Net income	$	199,037		$	172,431		$	39,701		$	(212,132	)	$	199,037
Consolidated Condensed Statements of Comprehensive Income (Loss)	'																'
	LKQ CORPORATION AND SUBSIDIARIES																LKQ CORPORATION AND SUBSIDIARIES
	Condensed Consolidating Statements of Comprehensive Income (Loss)																Condensed Consolidating Statements of Comprehensive Income (Loss)
	(In thousands)																(In thousands)
		Three Months Ended September 30, 2013																Year Ended December 31, 2012
		Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated				Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
	Net income	$	73,445		$	60,388		$	23,076		$	(83,464	)	$	73,445		Net income	$	261,225		$	234,399		$	44,152		$	(278,551	)	$	261,225
	Other comprehensive income, net of tax:																Other comprehensive income (loss), net of tax:
	Foreign currency translation	28,514			13,130			28,104			(41,234		)	28,514			Foreign currency translation	12,921			5,278			12,334			(17,612		)	12,921
	Net change in unrecognized gains/losses on derivative instruments, net of tax	625			—			127			(127		)	625			Net change in unrecognized gains/losses on derivative instruments, net of tax	(3,201		)	—			(519		)	519			(3,201		)
	Total other comprehensive income	29,139			13,130			28,231			(41,361		)	29,139			Total other comprehensive income	9,720			5,278			11,815			(17,093		)	9,720
	Total comprehensive income	$	102,584		$	73,518		$	51,307		$	(124,825	)	$	102,584		Total comprehensive income	$	270,945		$	239,677		$	55,967		$	(295,644	)	$	270,945
	LKQ CORPORATION AND SUBSIDIARIES																LKQ CORPORATION AND SUBSIDIARIES
	Condensed Consolidating Statements of Comprehensive Income (Loss)																Condensed Consolidating Statements of Comprehensive Income (Loss)
	(In thousands)																(In thousands)
		Three Months Ended September 30, 2012																Year Ended December 31, 2011
		Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated				Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
	Net income	$	54,048		$	44,429		$	14,400		$	(58,829	)	$	54,048		Net income	$	210,264		$	210,575		$	8,444		$	(219,019	)	$	210,264
	Other comprehensive income (loss), net of tax:																Other comprehensive loss, net of tax:
	Foreign currency translation	10,182			3,880			9,485			(13,365		)	10,182			Foreign currency translation	(4,273		)	(1,440		)	(3,790		)	5,230			(4,273		)
	Net change in unrecognized gains/losses on derivative instruments, net of tax	(1,242		)	—			(166		)	166			(1,242		)	Net change in unrecognized gains/losses on derivative instruments, net of tax	(9,066		)	—			(1,042		)	1,042			(9,066		)
	Total other comprehensive income	8,940			3,880			9,319			(13,199		)	8,940			Total other comprehensive loss	(13,339		)	(1,440		)	(4,832		)	6,272			(13,339		)
	Total comprehensive income	$	62,988		$	48,309		$	23,719		$	(72,028	)	$	62,988		Total comprehensive income	$	196,925		$	209,135		$	3,612		$	(212,747	)	$	196,925
	LKQ CORPORATION AND SUBSIDIARIES																LKQ CORPORATION AND SUBSIDIARIES
	Condensed Consolidating Statements of Comprehensive Income (Loss)																Condensed Consolidating Statements of Comprehensive Income
	(In thousands)																(In thousands)
																		Year Ended December 31, 2010
		Nine Months Ended September 30, 2013																Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
		Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated			Net income	$	169,071		$	174,334		$	1,502		$	(175,836	)	$	169,071
	Net income	$	233,759		$	200,572		$	60,039		$	(260,611	)	$	233,759
																	Other comprehensive income, net of tax:
	Other comprehensive income, net of tax:																Foreign currency translation	3,078			1,517			2,706			(4,223		)	3,078
	Foreign currency translation	6,330			3,386			7,107			(10,493		)	6,330
																	Net change in unrecognized gains/losses on derivative instruments, net of tax	8,712			—			—			—			8,712
	Net change in unrecognized gains/losses on derivative instruments, net of tax	3,986			—			903			(903		)	3,986
																	Reversal of unrealized gain on pension plan, net of tax	(15		)	(15		)	—			15			(15		)
	Total other comprehensive income	10,316			3,386			8,010			(11,396		)	10,316
																	Total other comprehensive income	11,775			1,502			2,706			(4,208		)	11,775
	Total comprehensive income	$	244,075		$	203,958		$	68,049		$	(272,007	)	$	244,075
																	Total comprehensive income	$	180,846		$	175,836		$	4,208		$	(180,044	)	$	180,846
	LKQ CORPORATION AND SUBSIDIARIES
	Condensed Consolidating Statements of Comprehensive Income (Loss)
	(In thousands)
		Nine Months Ended September 30, 2012
		Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
	Net income	$	199,037		$	172,431		$	39,701		$	(212,132	)	$	199,037
	Other comprehensive income (loss), net of tax:
	Foreign currency translation	12,518			4,965			11,735			(16,700		)	12,518
	Net change in unrecognized gains/losses on derivative instruments, net of tax	(4,233		)	—			(619		)	619			(4,233		)
	Total other comprehensive income	8,285			4,965			11,116			(16,081		)	8,285
	Total comprehensive income	$	207,322		$	177,396		$	50,817		$	(228,213	)	$	207,322
Consolidated Condensed Statements of Cash Flows	'																'
	LKQ CORPORATION AND SUBSIDIARIES																LKQ CORPORATION AND SUBSIDIARIES
	Condensed Consolidating Statements of Cash Flows																Condensed Consolidating Statements of Cash Flows
	(In thousands)																(In thousands)
		Nine Months Ended September 30, 2013																Year Ended December 31, 2012
		Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated				Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
	CASH FLOWS FROM OPERATING ACTIVITIES:																CASH FLOWS FROM OPERATING ACTIVITIES:
	Net cash provided by operating activities	$	101,136		$	195,524		$	116,212		$	(71,943	)	$	340,929		Net cash provided by (used in) operating activities	$	150,309		$	289,013		$	(74,085	)	$	(159,047	)	$	206,190
	CASH FLOWS FROM INVESTING ACTIVITIES:																CASH FLOWS FROM INVESTING ACTIVITIES:
	Purchases of property and equipment	(1		)	(40,824		)	(20,301		)	—			(61,126		)	Purchases of property and equipment	(150		)	(68,344		)	(19,761		)	—			(88,255		)
	Proceeds from sales of property and equipment	—			1,032			427			—			1,459			Proceeds from sales of property and equipment	—			699			358			—			1,057
	Investment in unconsolidated subsidiary	—			—			(9,136		)	—			(9,136		)	Investment and intercompany note activity with subsidiaries	(132,006		)	—			—			132,006			—
	Investment and intercompany note activity with subsidiaries	(418,205		)	(84,893		)	—			503,098			—			Cash used in acquisitions, net of cash acquired	—			(183,716		)	(81,620		)	—			(265,336		)
	Acquisitions, net of cash acquired	—			(21,570		)	(374,404		)	—			(395,974		)	Net cash used in investing activities	(132,156		)	(251,361		)	(101,023		)	132,006			(352,534		)
	Net cash used in investing activities	(418,206		)	(146,255		)	(403,414		)	503,098			(464,777		)	CASH FLOWS FROM FINANCING ACTIVITIES:
																	Proceeds from exercise of stock options	17,693			—			—			—			17,693
	CASH FLOWS FROM FINANCING ACTIVITIES:
	Proceeds from exercise of stock options	13,647			—			—			—			13,647			Excess tax benefit from stock-based payments	15,737			—			—			—			15,737
	Excess tax benefit from stock-based payments	15,998			—			—			—			15,998			Debt issuance costs	(30		)	—			(223		)	—			(253		)
	Debt issuance costs	(16,830		)	—			(82		)	—			(16,912		)	Borrowings under revolving credit facility	612,700			—			129,681			—			742,381
	Proceeds from issuance of senior notes	600,000			—			—			—			600,000			Repayments under revolving credit facility	(832,700		)	—			(22,702		)	—			(855,402		)
	Borrowings under revolving credit facility	315,000			—			84,758			—			399,758			Borrowings under term loans	200,000			—			—			—			200,000
	Repayments under revolving credit facility	(616,000		)	—			(129,313		)	—			(745,313		)	Repayments under term loans	(20,000		)	—			—			—			(20,000		)
	Borrowings under term loans	35,000			—			—			—			35,000			Borrowings under receivables securitization facility	—			—			82,700			—			82,700
	Repayments under term loans	(11,250		)	—			—			—			(11,250		)	Repayments under receivables securitization facility	—			—			(2,700		)	—			(2,700		)
	Borrowings under receivables securitization facility	—			—			41,500			—			41,500			Payments of other obligations	(3,065		)	(6,861		)	(13,158		)	—			(23,084		)
	Repayments under receivables securitization facility	—			—			(111,500		)	—			(111,500		)	Investment and intercompany note activity with parent	—			129,076			2,930			(132,006		)	—
	Repayments of other long-term debt	(925		)	(7,983		)	(10,610		)	—			(19,518		)	Dividends	—			(159,047		)	—			159,047			—
	Payments of other obligations	—			(473		)	(31,618		)	—			(32,091		)	Net cash (used in) provided by financing activities	(9,665		)	(36,832		)	176,528			27,041			157,072
	Investment and intercompany note activity with parent	—			25,095			478,003			(503,098		)	—			Effect of exchange rate changes on cash and equivalents	—			—			795			—			795
	Dividends	—			(71,943		)	—			71,943			—			Net increase in cash and equivalents	8,488			820			2,215			—			11,523
	Net cash provided by (used in) financing activities	334,640			(55,304		)	321,138			(431,155		)	169,319			Cash and equivalents, beginning of period	9,908			17,433			20,906			—			48,247
	Effect of exchange rate changes on cash and equivalents	—			—			2,096			—			2,096			Cash and equivalents, end of period	$	18,396		$	18,253		$	23,121		$	—		$	59,770
	Net increase (decrease) in cash and equivalents	17,570			(6,035		)	36,032			—			47,567			LKQ CORPORATION AND SUBSIDIARIES
																	Condensed Consolidating Statements of Cash Flows
	Cash and equivalents, beginning of period	18,396			18,253			23,121			—			59,770			(In thousands)
	Cash and equivalents, end of period	$	35,966		$	12,218		$	59,153		$	—		$	107,337			Year Ended December 31, 2011
																		Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
	LKQ CORPORATION AND SUBSIDIARIES																CASH FLOWS FROM OPERATING ACTIVITIES:
	Condensed Consolidating Statements of Cash Flows																Net cash provided by operating activities	$	72,199		$	201,029		$	4,341		$	(65,797	)	$	211,772
	(In thousands)
																	CASH FLOWS FROM INVESTING ACTIVITIES:
		Nine Months Ended September 30, 2012															Purchases of property and equipment	(922		)	(79,474		)	(6,020		)	—			(86,416		)
		Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
	CASH FLOWS FROM OPERATING ACTIVITIES:																Proceeds from sales of property and equipment	2			1,557			184			—			1,743
	Net cash provided by (used in) operating activities	$	134,934		$	252,440		$	(67,023	)	$	(138,279	)	$	182,072
																	Investment and intercompany note activity with subsidiaries	(347,005		)	(93,985		)	—			440,990			—
	CASH FLOWS FROM INVESTING ACTIVITIES:
	Purchases of property and equipment	(45		)	(47,446		)	(13,145		)	—			(60,636		)	Cash used in acquisitions, net of cash acquired	—			(193,292		)	(293,642		)	—			(486,934		)
	Proceeds from sales of property and equipment	—			458			234			—			692			Net cash used in investing activities	(347,925		)	(365,194		)	(299,478		)	440,990			(571,607		)
	Investment and intercompany note activity with subsidiaries	(48,690		)	—			—			48,690			—			CASH FLOWS FROM FINANCING ACTIVITIES:
																	Proceeds from exercise of stock options	11,919			—			—			—			11,919
	Acquisitions, net of cash acquired	—			(110,713		)	(22,410		)	—			(133,123		)
																	Excess tax benefit from stock-based payments	7,973			—			—			—			7,973
	Net cash used in investing activities	(48,735		)	(157,701		)	(35,321		)	48,690			(193,067		)
																	Debt issuance costs	(10,874		)	—			(174		)	—			(11,048		)
	CASH FLOWS FROM FINANCING ACTIVITIES:
	Proceeds from exercise of stock options	14,187			—			—			—			14,187			Borrowings under revolving credit facility	748,329			—			363,040			—			1,111,369
	Excess tax benefit from stock-based payments	11,071			—			—			—			11,071			Repayments under revolving credit facility	(227,329		)	—			(226,538		)	—			(453,867		)
	Debt issuance costs	—			—			(175		)	—			(175		)	Borrowings under term loans	250,000			—			—			—			250,000
	Borrowings under revolving credit facility	442,500			—			57,587			—			500,087			Repayments under term loans	(563,079		)	—			(37,385		)	—			(600,464		)
	Repayments under revolving credit facility	(733,500		)	—			(14,351		)	—			(747,851		)	Payments of other obligations	(1,640		)	(849		)	(1,982		)	—			(4,471		)
	Borrowings under term loans	200,000			—			—			—			200,000			Investment and intercompany note activity with parent	—			226,872			214,118			(440,990		)	—
	Repayments under term loans	(14,375		)	—			—			—			(14,375		)	Dividends	—			(65,797		)	—			65,797			—
Borrowings under receivables securitization facility	—			—			77,272			—			77,272			Net cash provided by financing activities	215,299			160,226			311,079			(375,193		)	311,411
Repayments of other long-term debt	(2,580		)	(1,834		)	(3,922		)	—			(8,336		)	Effect of exchange rate changes on cash and equivalents	—			—			982			—			982
Payments of other obligations	—			(600		)	—			—			(600		)	Net (decrease) increase in cash and equivalents	(60,427		)	(3,939		)	16,924			—			(47,442		)
Investment and intercompany note activity with parent	—			47,754			936			(48,690		)	—			Cash and equivalents, beginning of period	70,335			21,372			3,982			—			95,689
Dividends	—			(138,279		)	—			138,279			—			Cash and equivalents, end of period	$	9,908		$	17,433		$	20,906		$	—		$	48,247
Net cash (used in) provided by financing activities	(82,697		)	(92,959		)	117,347			89,589			31,280			LKQ CORPORATION AND SUBSIDIARIES
																Condensed Consolidating Statements of Cash Flows
Effect of exchange rate changes on cash and equivalents	—			—			682			—			682			(In thousands)
Net increase in cash and equivalents	3,502			1,780			15,685			—			20,967				Year Ended December 31, 2010
																	Parent			Guarantors			Non-Guarantors			Eliminations			Consolidated
Cash and equivalents, beginning of period	9,908			17,433			20,906			—			48,247			CASH FLOWS FROM OPERATING ACTIVITIES:
																Net cash provided by (used in) operating activities	$	53,403		$	163,533		$	(2,115	)	$	(55,638	)	$	159,183
Cash and equivalents, end of period	$	13,410		$	19,213		$	36,591		$	—		$	69,214
																CASH FLOWS FROM INVESTING ACTIVITIES:
																Purchases of property and equipment	(705		)	(57,687		)	(3,046		)	—			(61,438		)
																Proceeds from sales of property and equipment	16			1,040			385			—			1,441
																Proceeds from sale of businesses, net of cash sold	—			11,992			—			—			11,992
																Investment and intercompany note activity with subsidiaries	(77,421		)	—			—			77,421			—
																Cash used in acquisitions, net of cash acquired	—			(121,384		)	(22,194		)	—			(143,578		)
																Net cash used in investing activities	(78,110		)	(166,039		)	(24,855		)	77,421			(191,583		)
																CASH FLOWS FROM FINANCING ACTIVITIES:
																Proceeds from exercise of stock options	13,962			—			—			—			13,962
																Excess tax benefit from stock-based payments	15,000			—			—			—			15,000
																Debt issuance costs	(419		)	—			—			—			(419		)
																Repayments under term loans	(7,037		)	—			(439		)	—			(7,476		)
																Payments of other obligations	(850		)	(399		)	(856		)	—			(2,105		)
																Investment and intercompany note activity with parent	—			56,459			20,962			(77,421		)	—
																Dividends	—			(55,638		)	—			55,638			—
																Net cash provided by financing activities	20,656			422			19,667			(21,783		)	18,962
																Effect of exchange rate changes on cash and equivalents	—			—			221			—			221
																Net decrease in cash and equivalents	(4,051		)	(2,084		)	(7,082		)	—			(13,217		)
																Cash and equivalents, beginning of period	74,386			23,456			11,064			—			108,906
																Cash and equivalents, end of period	$	70,335		$	21,372		$	3,982		$	—		$	95,689

Business_Business_Additional_I

Business Business - Additional Information (Details)	12 Months Ended
	Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Number of facilities (more than 500)	500
Stock split conversion ratio	2

Interim_Financial_Statements_I

Interim Financial Statements Interim Financial Statements - Additional Information (Details)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'	'
Common stock, shares authorized	1,000,000,000	500,000,000	500,000,000

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Additional Information (Details) (USD $)	9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Finite-Lived Intangible Assets	'	'	'	'	'
Reserve for estimated returns, discounts and allowances	$30,500,000	'	$24,700,000	$22,800,000	'
Revenue recognition period for lifetime extended warranties	'	'	'3 years	'	'
Shipping and handling revenue	'	'	25,600,000	23,900,000	17,300,000
Reserve for uncollectible accounts	14,100,000	'	9,500,000	8,300,000	'
Amortization expense	9,000,000	7,100,000	9,500,000	7,900,000	4,200,000
Future Amortization Expense Recognized In Current Fiscal Year	13,000,000	'	'	'	'
Estimated annual amortization expense, 2013	14,200,000	'	8,800,000	'	'
Estimated annual amortization expense, 2014	12,800,000	'	7,900,000	'	'
Estimated annual amortization expense, 2015	11,400,000	'	7,100,000	'	'
Estimated annual amortization expense, 2016	10,500,000	'	6,300,000	'	'
Estimated annual amortization expense, 2017	'	'	6,000,000	'	'
Self-insurance reserve, total	'	'	44,100,000	37,400,000	'
Self-insurance reserve, current	'	'	21,500,000	18,200,000	'
Claims deposits	'	'	500,000	500,000	'
Percentage threshold to measure tax benefit	'	'	50.00%	'	'
Equity Method Investment, Ownership Percentage	49.00%	'	'	'	'
Equity method investment, ownership percentage of other investors	51.00%	'	'	'	'
Equity Method Investments	9,300,000	'	'	'	'
Self-insurance	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Outstanding letters of credit	'	'	37,100,000	31,800,000	'
Salvage Mechanical Products	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Standard warranty period	'6 months	'	'6 months	'	'
Remanufactured Engines	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Standard warranty period	'3 years	'	'3 years	'	'
Sator	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Intangible assets recognized	49,978,000	'	'	'	'
Euro Car Parts Holdings Limited	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Intangible assets recognized	'	'	'	43,723,000	'
Trade names and trademarks	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Intangible assets recognized	'	'	600,000	40,100,000	'
Trade names and trademarks | Minimum	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Useful life, years	'10 years	'	'10 years	'	'
Trade names and trademarks | Maximum	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Useful life, years	'30 years	'	'30 years	'	'
Trade names and trademarks | Sator	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Intangible assets recognized	24,700,000	'	'	'	'
Trade names and trademarks | Euro Car Parts Holdings Limited	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Intangible assets recognized	'	'	'	39,300,000	'
Customer relationships	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Intangible assets recognized	'	'	4,100,000	5,700,000	'
Customer relationships | Minimum	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Useful life, years	'5 years	'	'5 years	'	'
Customer relationships | Maximum	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Useful life, years	'15 years	'	'10 years	'	'
Customer relationships | Sator	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Intangible assets recognized	25,300,000	'	'	'	'
Covenants not to compete	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Intangible assets recognized	'	'	$600,000	$1,500,000	'
Covenants not to compete | Minimum	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Useful life, years	'1 year	'	'1 year	'	'
Covenants not to compete | Maximum	'	'	'	'	'
Finite-Lived Intangible Assets	'	'	'	'	'
Useful life, years	'5 years	'	'5 years	'	'

Summary_of_Significant_Account4

Summary of Significant Accounting Policies Schedule of Inventory (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
Product Information	'	'	'	'
Inventory	$1,018,169	$900,803	$736,846	$492,688
Aftermarket and refurbished products	'	'	'	'
Product Information	'	'	'	'
Inventory	649,768	523,677	445,787	'
Salvage and remanufactured products	'	'	'	'
Product Information	'	'	'	'
Inventory	$368,401	$377,126	$291,059	'

Summary_of_Significant_Account5

Summary of Significant Accounting Policies Schedule of Estimated Useful Lives (Details)	12 Months Ended
	Dec. 31, 2012
Land improvements | Minimum	'
Property, Plant and Equipment	'
Estimated useful life	'10 years
Land improvements | Maximum	'
Property, Plant and Equipment	'
Estimated useful life	'20 years
Buildings and improvements | Minimum	'
Property, Plant and Equipment	'
Estimated useful life	'20 years
Buildings and improvements | Maximum	'
Property, Plant and Equipment	'
Estimated useful life	'40 years
Furniture, fixtures and equipment | Minimum	'
Property, Plant and Equipment	'
Estimated useful life	'3 years
Furniture, fixtures and equipment | Maximum	'
Property, Plant and Equipment	'
Estimated useful life	'20 years
Computer equipment and software | Minimum	'
Property, Plant and Equipment	'
Estimated useful life	'3 years
Computer equipment and software | Maximum	'
Property, Plant and Equipment	'
Estimated useful life	'10 years
Vehicles and trailers | Minimum	'
Property, Plant and Equipment	'
Estimated useful life	'3 years
Vehicles and trailers | Maximum	'
Property, Plant and Equipment	'
Estimated useful life	'10 years

Summary_of_Significant_Account6

Summary of Significant Accounting Policies Schedule of Property and Equipment (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
Property, Plant and Equipment	'	'	'	'
Property and equipment excluding construction in progress, gross	'	$698,708	$582,197	'
Less—Accumulated depreciation	'	-231,130	-179,950	'
Construction in progress	'	26,801	21,851	'
Property, Plant and Equipment, Net	531,897	494,379	424,098	331,312
Land and improvements	'	'	'	'
Property, Plant and Equipment	'	'	'	'
Property and equipment excluding construction in progress, gross	'	87,720	81,170	'
Buildings and improvements	'	'	'	'
Property, Plant and Equipment	'	'	'	'
Property and equipment excluding construction in progress, gross	'	133,368	119,414	'
Furniture, fixtures and equipment	'	'	'	'
Property, Plant and Equipment	'	'	'	'
Property and equipment excluding construction in progress, gross	'	243,565	192,514	'
Computer equipment and software	'	'	'	'
Property, Plant and Equipment	'	'	'	'
Property and equipment excluding construction in progress, gross	'	91,588	79,195	'
Vehicles and trailers	'	'	'	'
Property, Plant and Equipment	'	'	'	'
Property and equipment excluding construction in progress, gross	'	51,187	40,825	'
Leasehold improvements	'	'	'	'
Property, Plant and Equipment	'	'	'	'
Property and equipment excluding construction in progress, gross	'	$91,280	$69,079	'

Changes_in_Carrying_Amount_of_

Changes in Carrying Amount of Goodwill (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Goodwill [Roll Forward]	'	'	'	'
Beginning balance	$1,690,284	$1,476,063	$1,032,973	$938,783
Business acquisitions and adjustments to previously recorded goodwill	227,261	197,602	442,208	91,757
Exchange rate effects	3,371	16,619	882	2,433
Ending balance	1,920,916	1,690,284	1,476,063	1,032,973
North America	'	'	'	'
Goodwill [Roll Forward]	'	'	'	'
Beginning balance	1,339,831	1,136,630	1,032,973	938,783
Business acquisitions and adjustments to previously recorded goodwill	17,623	201,742	105,177	91,757
Exchange rate effects	-4,407	1,459	-1,520	2,433
Ending balance	1,353,047	1,339,831	1,136,630	1,032,973
Europe	'	'	'	'
Goodwill [Roll Forward]	'	'	'	'
Beginning balance	350,453	339,433	0	'
Business acquisitions and adjustments to previously recorded goodwill	209,638	-4,140	337,031	'
Exchange rate effects	7,778	15,160	2,402	'
Ending balance	$567,869	$350,453	$339,433	'

Components_of_Other_Intangible

Components of Other Intangibles (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets	'	'	'
Gross carrying amount	$193,328	$136,502	$129,198
Accumulated amortization	-38,899	-29,787	-20,288
Net	154,429	106,715	108,910
Trade names and trademarks	'	'	'
Finite-Lived Intangible Assets	'	'	'
Gross carrying amount	144,254	118,422	115,954
Accumulated amortization	-26,167	-21,599	-16,305
Net	118,087	96,823	99,649
Customer relationships	'	'	'
Finite-Lived Intangible Assets	'	'	'
Gross carrying amount	45,252	14,426	10,050
Accumulated amortization	-10,616	-6,642	-3,065
Net	34,636	7,784	6,985
Covenants not to compete	'	'	'
Finite-Lived Intangible Assets	'	'	'
Gross carrying amount	3,822	3,654	3,194
Accumulated amortization	-2,116	-1,546	-918
Net	$1,706	$2,108	$2,276

Changes_in_Warranty_Reserve_De

Changes in Warranty Reserve (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
Warranty Reserve [Roll Forward]	'	'	'
Beginning balance	$10,574	$7,347	$2,063
Warranty expense	22,652	29,628	22,364
Warranty claims	-21,109	-27,514	-20,802
Business acquisitions	'	3,722	1,113
Ending balance	$12,117	$10,574	$7,347

Discontinued_Operations_Discon1

Discontinued Operations Discontinued Operations - Additional Information (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jan. 15, 2010
Discontinued Operations and Disposal Groups [Abstract]	'	'	'	'
Number of self service retail facilities sold	'	'	'	2
Proceeds from sale of businesses, net of cash sold	$0	$0	$11,992,000	'
Gain on sale of discontinued operations, net of taxes	0	0	1,729,000	'
Goodwill included in the cost basis of net assets disposed	'	'	'	$6,700,000

Discontinued_Operations_Result

Discontinued Operations Results of Operations for Discontinued Operations (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Discontinued Operations and Disposal Groups [Abstract]	'	'	'
Revenue	'	'	$686
Income before income tax provision	'	'	355
Income tax provision	'	'	131
Income from discontinued operations, net of taxes, before gain on sale of discontinued operations	0	0	224
Gain on sale of discontinued operations, net of taxes	0	0	1,729
Income from discontinued operations, net of taxes	$0	$0	$1,953

Discontinued_Operations_Result1

Discontinued Operations Results of Operations for Discontinued Operations (Parenthetical) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2010
Discontinued Operations and Disposal Groups [Abstract]	'
Tax portion of gain on sale of discontinued operations	$1,015

Equity_Incentive_Plans_Additio

Equity Incentive Plans - Additional Information (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

2 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2011

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2010

Dec. 31, 2009

Mar. 01, 2013

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Shares Available For Grant

Shares Available For Grant

Shares Available For Grant

Shares Available For Grant

Shares Available For Grant

RSUs

RSUs

RSUs

RSUs

RSUs

RSUs

RSUs

Stock Options

Stock Options

Stock Options

Stock Options

Stock Options

Stock Options

Stock Options

Restricted Stock

Restricted Stock

Restricted Stock

Restricted Stock

Restricted Stock

Restricted Stock

Restricted Stock

Replacement Performance Shares

New Performance Shares

Performance Shares

Performance Shares

1998 Equity Incentive Plan

1998 Equity Incentive Plan

Common Stock

Maximum

Maximum

Maximum

RSUs

Stock Options

Restricted Stock

Share-based Compensation Arrangement by Share-based Payment Award

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Increase in shares available for issuance under the Equity Incentive Plan

'

'

'

'

'

'

'

12,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,088,834

12,800,000

'

'

'

'

Total shares approved under the Equity Incentive Plan

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

69,900,000

'

'

'

'

'

Shares available for issuance under the Equity Incentive Plan

'

'

'

'

'

'

'

15,752,370

13,896,794

14,643,932

4,280,180

7,285,606

'

'

'

'

'

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'

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'

'

'

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'

'

'

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'

Vesting period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'5 years

'

'

'

'

'

'

'5 years

'

'

'6 months

'6 months

'

'

'

'

'

'5 years

'5 years

'5 years

Number of shares that RSUs convert into on the applicable vesting date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

1

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'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock options expiration period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'10 years

'

'10 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

97,254

'

119,422

44,904

'

'

'

'

'

'

'

'

'

'

'

'

'

'

671,400

'

'

'

'

'

'

'

'

'

Exercise price adjustment resulting from stock split

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

RSUs granted (shares)

'

'

'

'

'

'

'

'

'

'

'

'

594,700

'

'

924,312

'

1,504,410

1,643,348

'

'

'

'

'

'

'

'

'

'

'

'

'

'

671,400

275,400

'

946,800

'

'

'

'

'

'

Performance Period (Duration)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

Closing stock price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$21.10

'

'

'

Outstanding RSUs or restricted stock, intrinsic value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$49,600,000

'

'

'

'

'

'

'

'

'

'

'

'

$2,400,000

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding stock options, intrinsic value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

132,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercisable stock options, intrinsic value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

102,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Forfeiture rates used for grants to employees

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

'

10.00%

'

'

'

'

'

'

'

9.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Forfeiture rates used for grants to non-employee directors and executive officers

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.00%

'

0.00%

'

'

'

'

'

'

'

0.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of RSUs or restricted stock vested during the period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14,300,000

'

7,800,000

2,200,000

'

'

'

'

'

'

'

'

'

'

'

1,600,000

1,100,000

1,000,000

'

'

'

'

'

'

'

'

'

'

Period of time as a public company

'

'

'

'

'

'

'6 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of coupon issues related to the risk-free rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividend Yield

'

'

'

'

'

'

0.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of stock options vested

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7,200,000

8,600,000

7,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intrinsic value of stock options exercised

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

45,300,000

24,800,000

43,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock-based compensation expense

5,730,000

3,998,000

16,292,000

11,976,000

15,634,000

13,107,000

9,974,000

'

'

'

'

'

'

4,559,000

2,048,000

12,674,000

6,131,000

8,411,000

3,666,000

1,124,000

1,720,000

3,457,000

5,162,000

6,310,000

8,129,000

8,771,000

47,000

230,000

161,000

683,000

913,000

913,000

913,000

'

'

2,300,000

6,000,000

'

'

'

'

'

'

Unrecognized Stock Based Compensation Expense Expected To Be Recognize In Current Year

$5,629,000

'

$5,629,000

'

'

'

'

'

'

'

'

'

'

$4,459,000

'

$4,459,000

'

'

'

$1,123,000

'

$1,123,000

'

'

'

'

$47,000

'

$47,000

'

'

'

'

'

'

$2,300,000

$2,300,000

'

'

'

'

'

'

Summary_of_Transactions_in_Sto

Summary of Transactions in Stock-Based Compensation Plans (Details) (USD $)

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Mar. 01, 2013

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2011

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Shares Available For Grant

Shares Available For Grant

Shares Available For Grant

Shares Available For Grant

RSUs

RSUs

RSUs

RSUs

Stock Options

Stock Options

Stock Options

Stock Options

Restricted Stock

Restricted Stock

Restricted Stock

Restricted Stock

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Including Options, Shares Available for Grant [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance, beginning of period

'

14,643,932

15,752,370

4,280,180

7,285,606

'

'

'

'

'

'

'

'

'

'

'

'

Granted

'

-924,312

-1,504,410

-1,643,348

-3,423,066

'

'

'

'

'

'

'

'

'

'

'

'

Shares issued for director compensation

'

'

'

-31,166

'

'

'

'

'

'

'

'

'

'

'

'

'

Cancelled

'

177,174

395,972

346,704

417,640

'

'

'

'

'

'

'

'

'

'

'

'

Additional shares authorized

'

'

'

12,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance, end of period

'

13,896,794

14,643,932

15,752,370

4,280,180

'

'

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance, beginning of period

9,355,070

'

'

'

'

'

'

'

'

9,355,070

13,078,092

16,147,930

18,658,814

'

'

'

'

Granted

'

'

'

'

'

'

'

'

'

'

'

'

3,423,066

'

'

'

'

Exercised

'

'

'

'

'

'

'

'

'

-2,143,544

-3,446,472

-2,768,038

-5,516,310

'

'

'

'

Cancelled

'

'

'

'

'

'

'

'

'

-79,920

-276,550

-301,800

-417,640

'

'

'

'

Balance, end of period

9,355,070

'

'

'

'

'

'

'

'

7,131,606

9,355,070

13,078,092

16,147,930

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance, weighted average exercise price, beginning of period

$6.90

'

'

'

'

'

'

'

'

$6.90

$6.47

$6.14

$4.41

'

'

'

'

Granted, weighted average exercise price

'

'

'

'

'

'

'

'

'

'

'

'

$9.98

'

'

'

'

Exercised, weighted average exercise price

'

'

'

'

'

'

'

'

'

$6.37

$5.13

$4.31

$2.53

'

'

'

'

Cancelled, weighted average exercise price

'

'

'

'

'

'

'

'

'

$8.80

$8.30

$8.44

$8.06

'

'

'

'

Balance, weighted average exercise price, end of period

$6.90

'

'

'

'

'

'

'

'

$7.04

$6.90

$6.47

$6.14

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance, weighted average grant date fair value, beginning of period

'

'

'

'

'

$14.02

$14.02

$11.80

'

'

'

'

'

$9.47

$9.49

$9.50

$9.50

Granted, weighted average grant date fair value

'

'

'

'

'

'

$22.18

$15.86

$11.80

'

'

'

'

'

'

'

'

Vested, weighted average grant date fair value

'

'

'

'

'

'

$15.04

$13.09

$11.84

'

'

'

'

$9.54

$9.51

$9.51

$9.51

Cancelled, weighted average grant date fair value

'

'

'

'

'

'

$16.14

$14.03

$11.77

'

'

'

'

'

'

'

'

Balance, weighted average grant date fair value, end of period

'

'

'

'

'

'

$16.63

$14.02

$11.80

'

'

'

'

$9.30

$9.47

$9.49

$9.50

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance, beginning of period

'

'

'

'

'

2,351,362

2,351,362

1,433,582

'

'

'

'

'

116,000

212,000

308,000

404,000

Granted

'

'

'

'

'

594,700

924,312

1,504,410

1,643,348

'

'

'

'

'

'

'

'

Vested

'

'

'

'

'

'

-593,671

-467,208

-164,862

'

'

'

'

-86,000

-96,000

-96,000

-96,000

Cancelled

'

'

'

'

'

'

-97,254

-119,422

-44,904

'

'

'

'

'

'

'

'

Balance, end of period

'

'

'

'

'

'

2,584,749

2,351,362

1,433,582

'

'

'

'

30,000

116,000

212,000

308,000

Equity_Incentive_Plans_Summary

Equity Incentive Plans Summary of Expected to Vest RSUs, Stock Options, and Restricted Stock (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Sep. 30, 2013
Summary of Expected to Vest RSUs, Stock Options, and Restricted Stock [Line Items]	'	'
Unrecognized Stock Based Compensation Expense Expected To Be Recognize In Current Year	'	$5,629
2013	13,042	15,975
2014	11,043	9,496
2015	7,936	5,673
2016	4,394	2,575
2017	141	96
Total unrecognized compensation expense	36,556	39,444
RSUs	'	'
Summary of Expected to Vest RSUs, Stock Options, and Restricted Stock [Line Items]	'	'
Unrecognized Stock Based Compensation Expense Expected To Be Recognize In Current Year	'	4,459
Shares	2,319,877	'
Weighted average remaining contractual life	'3 years 6 months	'
Intrinsic value	48,949	'
2013	8,254	12,829
2014	7,897	9,421
2015	7,861	5,673
2016	4,394	2,575
2017	141	96
Total unrecognized compensation expense	28,547	35,053
Stock Options	'	'
Summary of Expected to Vest RSUs, Stock Options, and Restricted Stock [Line Items]	'	'
Unrecognized Stock Based Compensation Expense Expected To Be Recognize In Current Year	'	1,123
Shares	9,079,684	'
Weighted average remaining contractual life	'5 years	'
Intrinsic value	129,421	'
Weighted average exercise price	$6.85	'
2013	4,580	3,007
2014	3,007	75
2015	75	'
Total unrecognized compensation expense	7,662	4,205
Restricted Stock	'	'
Summary of Expected to Vest RSUs, Stock Options, and Restricted Stock [Line Items]	'	'
Unrecognized Stock Based Compensation Expense Expected To Be Recognize In Current Year	'	47
Shares	116,000	'
Weighted average remaining contractual life	'7 months	'
Intrinsic value	2,448	'
2013	208	139
2014	139	'
Total unrecognized compensation expense	$347	$186

Equity_Incentive_Plans_Summary1

Equity Incentive Plans Summary of Outstanding And Exercisable Stock Options (Details) (USD $)	12 Months Ended
	Dec. 31, 2012
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Outstanding shares	9,355,070
Weighted average remaining contractual life, outstanding options	'5 years
Weighted average exercise price, outstanding options	$6.90
Exercisable shares	6,896,485
Weighted average remaining contractual life, exercisable options	'4 years 6 months
Weighted average exercise price, exercisable options	$6.26
$1.50 - $3.50	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Lower range limit	$1.50
Upper range limit	$3.50
Outstanding shares	1,357,538
Weighted average remaining contractual life, outstanding options	'1 year 7 months
Weighted average exercise price, outstanding options	$2.11
Exercisable shares	1,357,538
Weighted average remaining contractual life, exercisable options	'1 year 7 months
Weighted average exercise price, exercisable options	$2.11
$3.51 - $5.50	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Lower range limit	$3.51
Upper range limit	$5.50
Outstanding shares	1,676,760
Weighted average remaining contractual life, outstanding options	'3 years 6 months
Weighted average exercise price, outstanding options	$4.85
Exercisable shares	1,676,760
Weighted average remaining contractual life, exercisable options	'3 years 6 months
Weighted average exercise price, exercisable options	$4.85
$5.51 - $7.50	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Lower range limit	$5.51
Upper range limit	$7.50
Outstanding shares	2,193,800
Weighted average remaining contractual life, outstanding options	'6 years
Weighted average exercise price, outstanding options	$5.98
Exercisable shares	1,448,330
Weighted average remaining contractual life, exercisable options	'6 years
Weighted average exercise price, exercisable options	$5.98
$7.51 - $9.50	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Lower range limit	$7.51
Upper range limit	$9.50
Outstanding shares	215,666
Weighted average remaining contractual life, outstanding options	'6 years 1 month
Weighted average exercise price, outstanding options	$9.21
Exercisable shares	160,733
Weighted average remaining contractual life, exercisable options	'5 years 9 months
Weighted average exercise price, exercisable options	$9.25
$9.51 and above	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Lower range limit	$9.51
Outstanding shares	3,911,306
Weighted average remaining contractual life, outstanding options	'6 years 3 months
Weighted average exercise price, outstanding options	$9.84
Exercisable shares	2,253,124
Weighted average remaining contractual life, exercisable options	'6 years
Weighted average exercise price, exercisable options	$9.78

Equity_Incentive_Plans_Summary2

Equity Incentive Plans Summary of Weighted Average Assumptions Used to Compute Fair Value of Stock Option Grants (Details) (USD $)	12 Months Ended
	Dec. 31, 2010
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Expected life	'6 years 5 months
Risk-free interest rate	3.17%
Volatility	43.90%
Dividend Yield	0.00%
Weighted average fair value of options granted	$4.77

Schedule_of_PreTax_StockBased_

Schedule of Pre-Tax Stock-Based Compensation Expense (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award	'	'	'	'	'	'	'
Stock-based compensation expense	$5,730	$3,998	$16,292	$11,976	$15,634	$13,107	$9,974
RSUs	'	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'	'	'	'	'	'
Stock-based compensation expense	4,559	2,048	12,674	6,131	8,411	3,666	'
Stock Options	'	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'	'	'	'	'	'
Stock-based compensation expense	1,124	1,720	3,457	5,162	6,310	8,129	8,771
Restricted Stock	'	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'	'	'	'	'	'
Stock-based compensation expense	47	230	161	683	913	913	913
Stock Issued To Non-Employee Directors	'	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'	'	'	'	'	'
Stock-based compensation expense	'	'	'	'	'	$399	$290

Schedule_of_StockBased_Compens

Schedule of Stock-Based Compensation Expense Included in Statements of Income (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Employee Service Share-based Compensation, Allocation of Recognized Period Costs	'	'	'	'	'	'	'
Stock-based compensation expense, before tax	$5,730	$3,998	$16,292	$11,976	$15,634	$13,107	$9,974
Income tax benefit	-2,235	-1,559	-6,354	-4,671	-6,097	-5,059	-3,920
Total stock-based compensation expense, net of tax	3,495	2,439	9,938	7,305	9,537	8,048	6,054
Cost of goods sold	'	'	'	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs	'	'	'	'	'	'	'
Stock-based compensation expense, before tax	98	99	294	298	376	327	278
Facility and warehouse expenses	'	'	'	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs	'	'	'	'	'	'	'
Stock-based compensation expense, before tax	687	648	2,058	1,951	2,465	2,391	2,069
Selling, general and administrative expenses	'	'	'	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs	'	'	'	'	'	'	'
Stock-based compensation expense, before tax	$4,945	$3,251	$13,940	$9,727	$12,793	$10,389	$7,627

Schedule_of_StockBased_Compens1

Schedule of Stock-Based Compensation Expense Expected to be Recognized (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Share-based Compensation Arrangement by Share-based Payment Award	'	'
2013	$15,975	$13,042
2014	9,496	11,043
2015	5,673	7,936
2016	2,575	4,394
2017	96	141
Total unrecognized compensation expense	39,444	36,556
RSUs	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'
2013	12,829	8,254
2014	9,421	7,897
2015	5,673	7,861
2016	2,575	4,394
2017	96	141
Total unrecognized compensation expense	35,053	28,547
Stock Options	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'
2013	3,007	4,580
2014	75	3,007
2015	'	75
Total unrecognized compensation expense	4,205	7,662
Restricted Stock	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'
2013	139	208
2014	'	139
Total unrecognized compensation expense	$186	$347

LongTerm_Obligations_Additiona

Long-Term Obligations - Additional Information (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Sep. 28, 2012

3-May-13

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2011

Sep. 30, 2011

Mar. 25, 2011

Sep. 30, 2013

3-May-13

Dec. 31, 2012

Sep. 28, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2011

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2011

3-May-13

3-May-13

3-May-13

3-May-13

9-May-13

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Loans Payable

Loans Payable

Loans Payable

Receivables Securitization

Receivables Securitization

Receivables Securitization

Notes Payable

Notes Payable

Notes Payable

Other Long Term Debt

Other Long Term Debt

Other Long Term Debt

Multicurrency Component [Member]

US Dollar Component [Member]

Amended Credit Agreement [Member]

Original Credit Agreement [Member]

Four Point Seven Five Percent Senior Notes Due May 2023

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Debt Instrument

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Credit Agreement, Extension Period of Maturity Date

'

'

'

'

'

'

'

'

'2 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum credit agreement borrowings

'

'

'

'

'

'

'

'

$1,800,000,000

'

'

'

$1,400,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum revolving credit facility borrowings

'

'

'

'

'

'

'

'

'

'

'

'

950,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

1,200,000,000

150,000,000

'

'

'

Debt and Capital Lease Obligations

1,312,055,000

'

1,312,055,000

'

1,118,478,000

956,076,000

'

'

'

974,600,000

644,200,000

'

'

'

444,375,000

450,000,000

420,625,000

'

10,000,000

80,000,000

38,941,000

42,398,000

'

18,908,000

21,491,000

'

'

'

'

'

'

Term loan

'

'

'

'

420,625,000

240,625,000

'

'

'

'

'

'

'

250,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum incremental term loan borrowings

'

'

'

'

'

'

'

'

'

'

'

'

200,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum U.S. dollar value of foreign currency borrowings

'

'

'

'

'

'

'

'

'

'

'

'

500,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum amount of letters of credit

'

'

'

'

'

'

'

'

150,000,000

'

'

'

125,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Swing line loan maximum capacity

'

'

'

'

'

'

'

'

50,000,000

'

'

'

25,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum increase of revolving credit facility or term loans

'

'

'

'

'

'

'

'

400,000,000

'

'

'

400,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from the new term loan

'

'

'

'

'

'

'

'

'

200,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Security interest in subsidiaries pledged as collateral

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Pleadge of a foreign subsidiary's voting equity interest evaluated for adverse tax consequences

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Minimum security interest percentage in foreign subidiaries

'

'

'

'

'

'

'

'

'

'

'

'

65.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Original principal payment percentage in first and second years

'

'

'

'

'

'

'

'

'

'

'

'

5.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Original principal payment percentage in third and fourth years

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Original principal payment percentage in fifth year

'

'

'

'

'

'

'

'

'

'

'

'

15.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restrictive covenants, maximum permitted receivables facility

'

'

'

'

'

'

'

'

'

'

'

'

100,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum net leverage ratio

'

'

'

'

'

'

'

'

3.5

'

'

'

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Minimum consideration for acquisitions during 12 month period to change the maximum net leverage ratio

'

'

'

'

'

'

'

'

200,000,000

'

'

'

200,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum Net Leverage Ratio Subsequent To Acquisitions

'

'

'

'

'

'

'

'

4

'

'

'

3.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum net leverage ratio subsequent to acquisition

'

'

'

'

'

'

'

'

'

'

'

'

3.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Minimum interest coverage ratio

'

'

'

'

'

'

'

'

3

'

'

'

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Increment change in applicable margin

'

'

'

'

'

'

'

'

0.25%

'

'

'

0.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average interest rates

'

'

'

'

'

'

'

'

'

2.85%

3.08%

2.59%

'

'

'

'

'

'

1.01%

1.05%

1.80%

1.70%

2.00%

3.50%

3.30%

3.20%

'

'

'

'

'

Increment change in commitment fees

'

'

'

'

'

'

'

'

0.05%

'

'

'

0.05%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fronting fee on letters of credit in addition to participation commission

'

'

'

'

'

'

'

'

0.13%

'

'

'

0.13%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Borrowings under credit agreement, carrying value

'

'

'

'

'

'

'

'

'

974,600,000

'

901,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current maturities of credit agreement

'

'

'

'

'

'

'

'

'

31,900,000

22,500,000

12,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding letters of credit

'

'

'

'

'

'

'

'

'

39,900,000

53,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Availability on the revolving credit facility

'

'

'

'

'

'

'

'

'

356,100,000

1,100,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Write-off of the unamortized balance of capitalized debt issuance costs

0

0

2,795,000

0

0

5,345,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fees incurred related to the execution of the agreement

'

'

'

'

'

'

'

'

'

'

'

11,000,000

'

'

'

'

'

'

'

300,000

'

'

'

'

'

'

'

'

'

'

'

Receivables securitization facility term period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

'

Receivables securitization maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

80,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Borrowings under receivable securitization facility, carrying value

'

'

'

'

80,000,000

'

'

77,300,000

'

'

'

'

'

'

'

'

'

'

'

80,000,000

'

'

'

'

'

'

'

'

'

'

'

Receivables used as collateral for receivables securitization facility

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

110,300,000

116,900,000

'

'

'

'

'

'

'

'

'

'

'

Margin above LIBOR for receivables secuirtization facility

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

Promissory notes issued for business acquisitions

'

'

'

'

16,000,000

34,200,000

5,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum Leverage Ratio for Incremental Borrowings

'

'

'

'

'

'

'

'

2.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Term Loan Quarterly Repayment, Percentage of Initial Balance

'

'

'

'

'

'

'

'

1.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Secured Debt, Prepayment Requirement, Duration to Reinvest Proceeds from Sale or Disposition of Certain Assets

'

'

'

'

'

'

'

'

'12 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments of Financing Costs

'

'

'

'

'

'

'

'

7,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Finance Costs, Noncurrent, Net

'

'

'

'

'

'

'

'

6,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9,700,000

Gains (Losses) on Extinguishment of Debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,100,000

1,700,000

'

Debt Instrument, Face Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$600,000,000

Debt Instrument, Interest Rate, Stated Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4.75%

Percent of Notes Redeemable Before May 15, 2016 With Net Cash Proceeds From Certain Equity Offerings

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

35.00%

Notes Redemption Price, Percent of Principal Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

Registration Rights Agreement, Period to Consummate Exchange Offer

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'365 days

Registration Rights Agreement, Failure to Consummate Exchange Offer, Annual Interest Rate Increase

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.25%

Registration Rights Agreement, Failure to Consummate Exchange Offer, For Each Subsequent Default Period, Additional Increase in Annual Interest Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.25%

Registration Rights Agreement, Failure to Consummate Exchange Offer, Subsequent Default Period For Additional Incremental Increase in Annual Interest Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'90 days

Registration Rights Agreement, Failure to Consummate Exchange Offer, Maximum Additional Increase in Annual Interest Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.00%

Schedule_of_LongTerm_Obligatio

Schedule of Long-Term Obligations (Details) (USD $)

Sep. 30, 2013

Dec. 31, 2012

Sep. 28, 2012

Dec. 31, 2011

Sep. 30, 2013

3-May-13

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

In Thousands, unless otherwise specified

Loans Payable

Loans Payable

Loans Payable

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Senior Notes

Senior Notes

Receivables Securitization

Receivables Securitization

Notes Payable

Notes Payable

Other Long Term Debt

Other Long Term Debt

Senior secured credit agreement:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Term loans payable

'

$420,625

'

$240,625

'

'

'

'

'

'

'

'

'

'

'

'

'

Revolving credit facility

'

553,964

'

660,730

'

'

'

'

'

'

'

'

'

'

'

'

'

Borrowings under receivable securitization facility, carrying value

'

80,000

77,300

'

'

'

'

'

'

'

'

'

80,000

'

'

'

'

Notes payable

'

42,398

'

38,338

'

'

'

'

'

'

'

'

'

'

'

'

'

Other long-term debt

'

21,491

'

16,383

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term obligations, total

1,312,055

1,118,478

'

956,076

444,375

450,000

420,625

199,831

553,964

600,000

0

10,000

80,000

38,941

42,398

18,908

21,491

Less current maturities

-61,123

-71,716

'

-29,524

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-Term Obligations, Excluding Current Portion

$1,250,932

$1,046,762

'

$926,552

'

'

'

'

'

'

'

'

'

'

'

'

'

Schedule_of_LongTerm_Obligatio1

Schedule of Long-Term Obligations (Parenthetical) (Details)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
Notes Payable	'	'	'
Debt Instrument	'	'	'
Weighted average interest rates	1.80%	1.70%	2.00%
Other Long Term Debt	'	'	'
Debt Instrument	'	'	'
Weighted average interest rates	3.50%	3.30%	3.20%

LongTerm_Obligations_Schedule_

Long-Term Obligations Schedule of Maturities of Long-Term Obligations (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]	'	'	'
2013	'	$71,716	'
2014	'	54,611	'
2015	'	138,323	'
2016	'	847,759	'
2017	'	848	'
Thereafter	'	5,221	'
Long-term obligations, total	$1,312,055	$1,118,478	$956,076

Derivative_Instruments_and_Hed2

Derivative Instruments and Hedging Activities - Additional Information (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2011	Dec. 31, 2012
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'	'	'
Cash flow hedge loss included in accumulated other comprehensive income (loss) to be reclassified to earnings within 12 months	($3,800,000)	'	'
Fair market value of interest rate swaps, current liability	15,403,000	'	705,000
Fair market value of interest rate swaps, noncurrent liability	9,568,000	10,600,000	14,938,000
Loss from hedge ineffectiveness	'	200,000	'
Net loss included in accumulated other comprehensive income (loss) to be reclassified into interest expense within the next 12 months	'	'	$4,100,000

Terms_of_Interest_Rate_Swap_Ag

Terms of Interest Rate Swap Agreements (Details)

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

3.31%

2.86%

2.95%

2.94% Maturity On October 31, 2016

2.94% Maturity On December 30, 2016

3.11%

3.17%

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

GBP (£)

CAD

Derivative [Line Items]

'

'

'

'

'

'

'

Notional Amount

$250,000,000

$100,000,000

$60,000,000

$60,000,000

$50,000,000

£ 50,000,000

25,000,000

Fixed Interest Rate

3.31%

[1]

2.86%

[1]

2.95%

[1]

2.94%

[1]

2.94%

[1]

3.11%

[1]

3.17%

[1]

[1]

Includes applicable margin of 1.75% per annum on LIBOR or CDOR-based debt in effect as of December 31, 2012 under the Credit Agreement.

Terms_of_Interest_Rate_Swap_Ag1

Terms of Interest Rate Swap Agreements (Parenthetical) (Details)	Dec. 31, 2012
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Applicable margin per annum as of the balance sheet date, under the Credit Agreement	1.75%

Derivative_Instruments_and_Hed3

Derivative Instruments and Hedging Activities Schedule of Derivative Instruments (Details)

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2011

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

In Thousands, unless otherwise specified

USD ($)

USD ($)

USD ($)

Pound Sterling Notional Amount

Interest Rate Swap

Interest Rate Swap

Interest Rate Swap

Interest Rate Swap

Interest Rate Swap

Interest Rate Swap

Interest Rate Swap

Interest Rate Swap

Interest Rate Swap

Foreign Exchange Forward

Foreign Exchange Forward

Foreign Exchange Forward

Foreign Exchange Forward

GBP (£)

US Dollar Notional Amount

US Dollar Notional Amount

Pound Sterling Notional Amount

Pound Sterling Notional Amount

Pound Sterling Notional Amount

Canadian Dollar Notional Amount

Canadian Dollar Notional Amount

Canadian Dollar Notional Amount

Canadian Dollar Notional Amount

Pound Sterling Notional Amount

Pound Sterling Notional Amount

Euro Notional Amount

Euro Notional Amount

USD ($)

USD ($)

USD ($)

USD ($)

GBP (£)

USD ($)

CAD

USD ($)

CAD

USD ($)

GBP (£)

USD ($)

EUR (€)

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative, notional amount

'

'

'

£ 50,000

$420,000

$520,000

'

'

£ 50,000

'

25,000

'

25,000

'

£ 70,000

'

€ 149,976

Derivative assets, noncurrent

52

'

'

'

'

'

'

'

'

52

'

'

'

'

'

'

'

Derivative liabilities, current

15,403

705

'

'

'

705

'

'

'

'

'

'

'

7,439

'

7,964

'

Derivative liabilities, noncurrent

$9,568

$14,938

$10,600

'

$8,631

$12,791

$937

$2,135

'

'

'

$12

'

'

'

'

'

Fair_Value_Measurements_Additi

Fair Value Measurements - Additional Information (Details)

3 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 28, 2012

Dec. 31, 2011

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2011

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2011

Dec. 31, 2011

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Credit Agreement

Credit Agreement

Credit Agreement

Receivables Securitization

Receivables Securitization

Senior Notes

Senior Notes

ECP 2012 Contingent Payment

ECP 2012 Contingent Payment

ECP 2012 Contingent Payment

ECP 2013 Contingent Payment Draco Portion

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

GBP (£)

GBP (£)

GBP (£)

Fair Value Measurements

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum payment under contingent consideration agreement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

£ 25,000,000

£ 27,000,000

Losses related to contingent consideration obligations outstanding at period-end

-700,000

-900,000

-2,800,000

-500,000

1,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Borrowings under credit agreement, carrying value

'

'

'

'

'

'

'

'

974,600,000

901,400,000

'

'

'

'

'

'

'

'

Borrowings under receivable securitization facility, carrying value

'

'

'

'

80,000,000

77,300,000

'

'

'

'

'

80,000,000

'

'

'

'

'

'

Business Acquisition Contingent Consideration Liabilities Payments Made

'

'

38,349,000

600,000

3,100,000

'

'

'

'

'

'

'

'

'

33,900,000

22,400,000

'

'

Business Acquisition Contingent Consideration Liabilities Other Settlements

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,900,000

2,600,000

'

'

Debt and Capital Lease Obligations

1,312,055,000

'

1,312,055,000

'

1,118,478,000

'

956,076,000

644,200,000

974,600,000

'

10,000,000

80,000,000

600,000,000

0

'

'

'

'

Long-term Debt, Fair Value

'

'

'

'

'

'

'

'

'

'

'

'

$560,000,000

'

'

'

'

'

Financial_Assets_and_Liabiliti

Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) (Fair Value, Measurements, Recurring, USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'	'
Fair value assets measured on recurring basis	$23,899	$19,492	$13,413
Fair value liabilities measured on recurring basis	103,066	125,495	107,029
Fair Value, Inputs, Level 2	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'	'
Fair value assets measured on recurring basis	23,899	19,492	13,413
Fair value liabilities measured on recurring basis	48,581	35,486	24,647
Fair Value, Inputs, Level 3	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'	'
Fair value liabilities measured on recurring basis	54,485	90,009	82,382
Foreign Exchange Forward	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'	'
Fair value liabilities measured on recurring basis	15,403	'	'
Foreign Exchange Forward | Fair Value, Inputs, Level 2	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'	'
Fair value liabilities measured on recurring basis	15,403	'	'
Deferred Compensation Liabilities	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'	'
Fair value liabilities measured on recurring basis	23,572	19,843	14,071
Deferred Compensation Liabilities | Fair Value, Inputs, Level 2	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'	'
Fair value liabilities measured on recurring basis	23,572	19,843	14,071
Contingent Consideration Liabilities	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'	'
Fair value liabilities measured on recurring basis	54,485	90,009	82,382
Contingent Consideration Liabilities | Fair Value, Inputs, Level 3	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'	'
Fair value liabilities measured on recurring basis	54,485	90,009	82,382
Interest Rate Swap	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'	'
Fair value assets measured on recurring basis	52	'	'
Fair value liabilities measured on recurring basis	9,606	15,643	10,576
Interest Rate Swap | Fair Value, Inputs, Level 2	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'	'
Fair value assets measured on recurring basis	52	'	'
Fair value liabilities measured on recurring basis	9,606	15,643	10,576
Cash Surrender Value	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'	'
Fair value assets measured on recurring basis	23,847	19,492	13,413
Cash Surrender Value | Fair Value, Inputs, Level 2	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	'	'	'
Fair value assets measured on recurring basis	$23,847	$19,492	$13,413

Significant_Unobservable_Input

Significant Unobservable Inputs Used in Fair Value Measurements (Details) (Contingent Consideration Liabilities, Fair Value, Inputs, Level 3)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
Contingent Consideration Liabilities | Fair Value, Inputs, Level 3	'	'	'
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation	'	'	'
Weighted Average, Probability of achieving payout targets	71.70%	79.70%	78.10%
Weighted Average, Discount rate	6.50%	6.60%	3.00%

Changes_in_Fair_Value_of_Conti

Changes in Fair Value of Contingent Consideration Obligations (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Contingent Consideration Obligations [Roll Forward]	'	'	'	'	'	'	'
Beginning balance	$49,473	$88,037	$90,009	$82,382	$82,382	$2,000	'
Contingent consideration liabilities recorded for business acquisitions	1,204	'	3,854	5,540	5,456	81,239	2,000
Payments	'	'	-38,349	-600	-3,100	'	'
Loss (gain) included in earnings	712	1,892	1,765	1,787	1,643	-1,408	'
Exchange rate effects	3,096	2,353	-2,794	3,173	3,628	551	'
Ending balance	$54,485	$92,282	$54,485	$92,282	$90,009	$82,382	$2,000

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Details) (USD $)	3 Months Ended				9 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Commitments and Contingencies Disclosure [Abstract]	'	'	'	'	'	'	'	'
Rent expense	'	'	'	'	'	$101.10	$83.70	$66.90
Guaranteed residual value of operating leases	28.7	'	'	'	'	28.7	'	'
Gain on lawsuit settlements	$0.70	$0.50	$8.40	$8.30	$17.20	$17.90	'	'
Number of defendants class action is pending against	2	'	'	'	'	2	'	'

Future_Minimum_Lease_Commitmen

Future Minimum Lease Commitments (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]	'	'
Operating Leases Future Minimum Payments Due For Remainder Of Current Fiscal Year	$28,271	'
Future minimum lease commitments due current	106,631	99,345
Future minimum payments due in two years	94,988	88,494
Future minimum payments due in three years	76,776	78,536
Future minimum payments due in four years	60,730	62,795
Future minimum payments due in five years	47,713	51,159
Thereafter	145,446	156,506
Future Minimum Lease Payments	$560,555	$536,835

Business_Combinations_Addition

Business Combinations - Additional Information (Details)

3 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

1 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2009

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2009

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2010

Dec. 31, 2010

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Europe

Europe

Europe

Europe

Europe

North America

North America

North America

North America

North America

Sator

Sator

All 2012 Acquisitions

All 2012 Acquisitions

All 2012 Acquisitions

All 2012 Acquisitions

All 2012 Acquisitions

All 2012 Acquisitions

All 2011 Acquisitions

Euro Car Parts Holdings Limited

Euro Car Parts Holdings Limited

ECP 2012 Contingent Payment

2013 Contingent Payment

All 2011 Acquisitions Excluding ECP

All 2011 Acquisitions Excluding ECP

All 2011 Acquisitions Excluding ECP

All 2011 Acquisitions Excluding ECP and Akzo

Engine Remanufacturers

Akzo Nobel

ECP 2013 Contingent Payment Draco Portion

All 2010 Acquisitions

All 2010 Acquisitions

All 2010 Acquisitions

All 2013 Acquisitions Excluding Sator

All 2013 Acquisitions Excluding Sator

All 2013 Acquisitions Excluding Sator

All 2013 Acquisitions Excluding Sator

UK Paint

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

EUR (€)

USD ($)

USD ($)

North America

Wholesale North America Segment

Scrap and Other Metals Processors

Self Service Segment

USD ($)

USD ($)

GBP (£)

GBP (£)

GBP (£)

USD ($)

Wholesale North America Segment

Self Service Segment

USD ($)

Wholesale North America Segment

Wholesale North America Segment

GBP (£)

USD ($)

Wholesale North America Segment

Self Service Segment

USD ($)

USD ($)

Europe

Wholesale North America Segment

Europe

USD ($)

Business Acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restructuring and acquisition related expenses

$2,206,000

$116,000

$7,391,000

$2,558,000

$2,751,000

$7,590,000

$668,000

'

$1,600,000

$5,300,000

'

'

'

'

'

'

'

'

$3,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,600,000

$2,000,000

'

'

'

Number of acquisitions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8

30

30

22

2

8

'

'

'

'

'

20

17

3

'

2

'

'

20

18

2

'

16

7

8

5

Total acquisition date fair value of the consideration for acquisitions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

284,600,000

284,600,000

'

'

'

'

'

403,700,000

261,600,000

'

'

207,300,000

'

'

'

'

'

'

170,400,000

'

'

133,100,000

133,100,000

'

'

'

Cash used in acquisitions, net of cash acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

272,824,000

209,800,000

261,470,000

261,470,000

'

'

'

'

486,934,000

293,725,000

190,300,000

'

'

193,209,000

'

'

'

'

'

'

143,600,000

'

'

122,397,000

122,397,000

'

'

'

Notes issued

'

'

'

'

16,000,000

34,200,000

5,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

15,990,000

15,990,000

'

'

'

'

34,219,000

28,302,000

18,400,000

'

'

5,917,000

'

'

'

'

'

'

5,500,000

'

'

6,782,000

6,782,000

'

'

'

Other purchase price obligations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,647,000

1,647,000

'

'

'

'

8,646,000

4,136,000

2,700,000

'

'

4,510,000

'

'

'

'

'

'

4,400,000

'

'

86,000

86,000

'

'

'

Acquisition date fair value of contingent consideration

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,456,000

5,456,000

'

'

'

'

81,239,000

77,539,000

50,200,000

'

'

3,700,000

'

'

'

'

'

'

2,000,000

'

'

3,854,000

3,854,000

'

'

'

Minimum payment under contingent consideration agreement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

22,000,000

23,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum payment under contingent consideration agreement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,500,000

6,500,000

'

'

'

'

'

'

'

25,000,000

30,000,000

'

'

'

4,600,000

'

21,000,000

27,000,000

'

'

'

4,900,000

4,900,000

'

'

'

Goodwill

1,920,916,000

'

1,920,916,000

'

1,690,284,000

1,476,063,000

1,032,973,000

938,783,000

567,869,000

567,869,000

350,453,000

339,433,000

0

1,353,047,000

1,339,831,000

1,136,630,000

1,032,973,000

938,783,000

139,158,000

'

201,742,000

201,742,000

'

'

'

'

438,068,000

332,891,000

'

'

'

105,177,000

'

'

'

'

'

'

91,800,000

'

'

88,103,000

88,103,000

'

'

'

Goodwill recorded for acquisitions

'

'

227,261,000

'

197,602,000

442,208,000

91,757,000

'

'

209,638,000

-4,140,000

337,031,000

'

17,623,000

201,742,000

105,177,000

91,757,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of contingent consideration arrangements resulting from acquisitions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

Goodwill expected to be deductible for income tax purposes

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

157,800,000

157,800,000

'

'

'

'

'

'

'

'

'

88,300,000

'

'

'

'

'

'

74,900,000

'

'

9,500,000

9,500,000

'

'

'

Revenue generated by acquisitions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

165,400,000

'

'

116,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

56,000,000

'

'

'

Operating income generated by acquisitions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,400,000

'

'

11,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,200,000

'

'

'

Stock issued in acquisitions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$14,900,000

'

'

'

'

'

'

'

Stock issued in acquisitions, shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,379,310

'

'

'

'

'

'

'

Purchase_Price_Allocations_for

Purchase Price Allocations for Acquisitions (Details)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2011	Dec. 31, 2011	Dec. 31, 2011
In Thousands, unless otherwise specified	USD ($)	USD ($)	USD ($)	USD ($)	USD ($)	All 2013 Acquisitions Excluding Sator	All 2013 Acquisitions	Sator	Sator	All 2012 Acquisitions	Euro Car Parts Holdings Limited	Euro Car Parts Holdings Limited	All 2011 Acquisitions Excluding ECP	All 2011 Acquisitions
						USD ($)	USD ($)	USD ($)	EUR (€)	USD ($)	USD ($)	GBP (£)	USD ($)	USD ($)
Business Acquisition	'	'	'	'	'	'	'	'	'	'	'	'	'	'
Receivables	'	'	'	'	'	$38,329	$99,968	$61,639	'	$15,473	$54,225	'	$23,538	$77,763
Receivable reserves	'	'	'	'	'	-3,023	-11,586	-8,563	'	-1,459	-3,832	'	-1,121	-4,953
Inventory	'	'	'	'	'	24,119	95,903	71,784	'	62,305	93,835	'	59,846	153,681
Prepaid expenses and other current assets	'	'	'	'	'	2,027	9,211	7,184	'	201	3,189	'	2,820	6,009
Property and equipment	'	'	'	'	'	12,517	32,001	19,484	'	31,930	41,830	'	10,614	52,444
Goodwill	1,920,916	1,690,284	1,476,063	1,032,973	938,783	88,103	227,261	139,158	'	201,742	332,891	'	105,177	438,068
Other intangibles	'	'	'	'	'	4,868	54,846	49,978	'	655	43,723	'	7,683	51,406
Other assets	'	'	'	'	'	1,232	3,281	2,049	'	187	13	'	9,420	9,433
Deferred income taxes	'	'	'	'	'	49	-15,173	-15,222	'	428	-13,218	'	7,235	-5,983
Current liabilities assumed	'	'	'	'	'	-34,438	-84,031	-49,593	'	-22,910	-135,390	'	-17,257	-152,647
Debt assumed	'	-3,989	-13,564	0	'	-664	-664	'	'	-3,989	-13,564	'	'	-13,564
Other noncurrent liabilities assumed	'	'	'	'	'	'	-5,074	-5,074	'	'	'	'	-619	-619
Contingent consideration liabilities	'	'	'	'	'	-3,854	-3,854	'	'	-5,456	-77,539	-50,200	-3,700	-81,239
Other purchase price obligations	'	'	'	'	'	-86	-86	'	'	-1,647	-4,136	-2,700	-4,510	-8,646
Notes issued	'	-16,000	-34,200	-5,500	'	-6,782	-6,782	'	'	-15,990	-28,302	-18,400	-5,917	-34,219
Cash used in acquisitions, net of cash acquired	'	'	'	'	'	$122,397	$395,221	$272,824	€ 209,800	$261,470	$293,725	£ 190,300	$193,209	$486,934

Pro_Forma_Effect_of_Businesses

Pro Forma Effect of Businesses Acquired (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

In Thousands, except Per Share data, unless otherwise specified

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2011

Sep. 30, 2011

Jun. 30, 2011

Mar. 31, 2011

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Business Acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue, as reported

$1,298,094

$1,067,915

[1]

$1,016,707

[1]

$1,006,531

[1]

$1,031,777

[1]

$939,632

$783,898

$759,684

$786,648

$3,745,839

$3,055,015

$4,122,930

$3,269,862

$2,469,881

Pro forma revenue

1,311,438

'

1,200,009

'

'

'

'

'

'

3,985,159

3,680,851

4,325,074

4,142,906

3,394,694

Net Income (Loss) Attributable to Parent

73,445

62,188

[1]

54,048

[1]

63,998

[1]

80,991

[1]

56,145

49,231

46,706

58,182

233,759

199,037

261,225

210,264

169,071

Income from continuing operations, as reported

'

'

'

'

'

'

'

'

'

'

'

261,225

210,264

167,118

Pro forma income from continuing operations

'

'

'

'

'

'

'

'

'

'

'

273,899

259,518

189,783

Basic earnings per share from continuing operations

'

'

'

'

'

'

'

'

'

'

'

$0.88

[2]

$0.72

[2]

$0.58

[2]

Pro forma basic earnings per share from continuing operations (a)

'

'

'

'

'

'

'

'

'

'

'

$0.93

[2]

$0.89

[2]

$0.66

[2]

Diluted earnings per share from continuing operations

'

'

'

'

'

'

'

'

'

'

'

$0.87

[2]

$0.71

[2]

$0.57

[2]

Pro forma diluted earnings per share from continuing operations (a)

'

'

'

'

'

'

'

'

'

'

'

$0.91

[2]

$0.87

[2]

$0.65

[2]

Business Acquisition, Pro Forma Net Income (Loss)

75,236

'

59,909

'

'

'

'

'

'

246,916

222,601

'

'

'

Earnings Per Share, Basic

$0.24

$0.21

[1]

$0.18

[1]

$0.22

[1]

$0.28

[1]

$0.19

[1]

$0.17

[1]

$0.16

[1]

$0.20

[1]

$0.78

$0.67

$0.88

[2]

$0.72

[2]

$0.59

[2]

Business Acquisition, Pro Forma Earnings Per Share, Basic

$0.25

[2]

'

$0.20

[2]

'

'

'

'

'

'

$0.83

[2]

$0.75

[2]

'

'

'

Earnings Per Share, Diluted

$0.24

$0.21

[1]

$0.18

[1]

$0.21

[1]

$0.27

[1]

$0.19

[1]

$0.17

[1]

$0.16

[1]

$0.20

[1]

$0.77

$0.66

$0.87

[2]

$0.71

[2]

$0.58

[2]

Business Acquisition, Pro Forma Earnings Per Share, Diluted

$0.25

[2]

'

$0.20

[2]

'

'

'

'

'

'

$0.81

[2]

$0.74

[2]

'

'

'

Sator

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue of purchased businesses for the period prior to acquisition

0

'

89,991

'

'

'

'

'

'

126,309

276,656

'

'

'

Net income of purchased businesses for the period prior to acquisition, including pro forma purchase accounting adjustments

0

'

1,465

'

'

'

'

'

'

5,345

4,742

'

'

'

Effect of purchased businesses for the period prior to acquisition

$0

'

$0

'

'

'

'

'

'

$0.02

$0.02

'

'

'

Effect of purchased businesses for the period prior to acquisition

$0

'

$0

'

'

'

'

'

'

$0.02

$0.02

'

'

'

All 2012 and 2013 Acquisitions Excluding Sator

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue of purchased businesses for the period prior to acquisition

13,344

'

93,311

'

'

'

'

'

'

113,011

349,180

'

'

'

Net income of purchased businesses for the period prior to acquisition, including pro forma purchase accounting adjustments

1,791

'

4,396

'

'

'

'

'

'

7,812

18,822

'

'

'

Effect of purchased businesses for the period prior to acquisition

$0.01

'

$0.01

'

'

'

'

'

'

$0.03

$0.06

'

'

'

Effect of purchased businesses for the period prior to acquisition

$0.01

'

$0.01

'

'

'

'

'

'

$0.03

$0.06

'

'

'

Euro Car Parts Holdings Limited

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue of purchased businesses for the period prior to acquisition

'

'

'

'

'

'

'

'

'

'

'

'

407,042

420,769

Net income of purchased businesses for the period prior to acquisition, including pro forma purchase accounting adjustments

'

'

'

'

'

'

'

'

'

'

'

'

21,858

9,669

Effect of purchased businesses for the period prior to acquisition

'

'

'

'

'

'

'

'

'

'

'

'

$0.07

$0.03

Effect of purchased businesses for the period prior to acquisition

'

'

'

'

'

'

'

'

'

'

'

'

$0.07

$0.03

All 2012 & 2011 Acquisitions Excluding ECP

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue of purchased businesses for the period prior to acquisition

'

'

'

'

'

'

'

'

'

'

'

202,144

466,002

'

Net income of purchased businesses for the period prior to acquisition, including pro forma purchase accounting adjustments

'

'

'

'

'

'

'

'

'

'

'

12,674

27,396

'

Effect of purchased businesses for the period prior to acquisition

'

'

'

'

'

'

'

'

'

'

'

$0.04

$0.09

'

Effect of purchased businesses for the period prior to acquisition

'

'

'

'

'

'

'

'

'

'

'

$0.04

$0.09

'

All 2011 & 2010 Acquisitions Excluding ECP

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue of purchased businesses for the period prior to acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

504,044

Net income of purchased businesses for the period prior to acquisition, including pro forma purchase accounting adjustments

'

'

'

'

'

'

'

'

'

'

'

'

'

$12,996

Effect of purchased businesses for the period prior to acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.05

Effect of purchased businesses for the period prior to acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.04

[1]

Gross margin and operating income during the quarters ended March 31, 2012, June 30, 2012, September 30, 2012 and December 31, 2012 include gains of $8.3 million, $8.4 million, $0.5 million and $0.7 million, respectively, resulting from lawsuit settlements with certain of our aftermarket product suppliers as discussed in Note 8, "Commitments and Contingencies."

[2]

The sum of the individual earnings per share amounts may not equal the total due to rounding.

Restructuring_and_Acquisition_1

Restructuring and Acquisition Related Expenses - Additional Information (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Restructuring Cost and Reserve	'	'	'	'	'	'	'
Restructuring and acquisition related expenses	$2,206,000	$116,000	$7,391,000	$2,558,000	$2,751,000	$7,590,000	$668,000
UK Paint	'	'	'	'	'	'	'
Restructuring Cost and Reserve	'	'	'	'	'	'	'
Restructuring and acquisition related expenses	1,400,000	'	1,400,000	'	'	'	'
Acquisition-related expenses	'	'	'	'	'	'	'
Restructuring Cost and Reserve	'	'	'	'	'	'	'
Restructuring and acquisition related expenses	2,000,000	'	6,000,000	'	'	'	'
Refurbished Bumper and Wheel Restructuring	'	'	'	'	'	'	'
Restructuring Cost and Reserve	'	'	'	'	'	'	'
Restructuring and acquisition related expenses	'	'	'	1,100,000	1,100,000	'	'
Akzo Nobel Paint Business Integration	'	'	'	'	'	'	'
Restructuring Cost and Reserve	'	'	'	'	'	'	'
Restructuring and acquisition related expenses	'	'	'	'	'	2,600,000	'
Greenleaf Integration	'	'	'	'	'	'	'
Restructuring Cost and Reserve	'	'	'	'	'	'	'
Restructuring and acquisition related expenses	'	'	'	'	'	'	700,000
Sator	'	'	'	'	'	'	'
Restructuring Cost and Reserve	'	'	'	'	'	'	'
Restructuring and acquisition related expenses	'	'	3,600,000	'	'	'	'
All 2012 and 2013 Acquisitions Excluding Sator	'	'	'	'	'	'	'
Restructuring Cost and Reserve	'	'	'	'	'	'	'
Restructuring and acquisition related expenses	200,000	'	1,400,000	'	'	'	'
All 2013 Acquisitions Excluding Sator	'	'	'	'	'	'	'
Restructuring Cost and Reserve	'	'	'	'	'	'	'
Restructuring and Related Cost, Expected Cost	'	'	4,000,000	'	'	'	'
All 2011 and 2012 Acquisitions	'	'	'	'	'	'	'
Restructuring Cost and Reserve	'	'	'	'	'	'	'
Restructuring and acquisition related expenses	'	100,000	'	1,400,000	'	'	'
Restructuring expenses | Other 2011 and 2012 Acquisitions	'	'	'	'	'	'	'
Restructuring Cost and Reserve	'	'	'	'	'	'	'
Restructuring and acquisition related expenses	'	'	'	'	1,200,000	'	'
Expected additional charges	'	'	'	'	1,000,000	'	'
Restructuring expenses | Excluding Akzo Nobel Paint Business Integration	'	'	'	'	'	'	'
Restructuring Cost and Reserve	'	'	'	'	'	'	'
Restructuring and acquisition related expenses	'	'	'	'	'	1,800,000	'
Restructuring expenses | Cross Canada Integration	'	'	'	'	'	'	'
Restructuring Cost and Reserve	'	'	'	'	'	'	'
Restructuring and acquisition related expenses	'	'	'	'	'	1,400,000	'
Restructuring expenses | Other 2010 and 2011 Acquisitions	'	'	'	'	'	'	'
Restructuring Cost and Reserve	'	'	'	'	'	'	'
Restructuring and acquisition related expenses	'	'	'	'	'	400,000	'
Acquisition-related expenses	'	'	'	'	'	'	'
Restructuring Cost and Reserve	'	'	'	'	'	'	'
Restructuring and acquisition related expenses	'	'	'	'	'	3,200,000	'
Acquisition-related expenses | Other 2011 and 2012 Acquisitions	'	'	'	'	'	'	'
Restructuring Cost and Reserve	'	'	'	'	'	'	'
Restructuring and acquisition related expenses	'	'	'	'	$500,000	'	'

Retirement_Plans_Retirement_Pl

Retirement Plans Retirement Plans - Additional Information (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
401(k) Plan	'	'	'
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'	'	'
Defined contribution plan expense	$5.40	$5.30	$4.80
Nonqualified Deferred Compensation Plan	'	'	'
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'	'	'
Defined contribution plan expense	0.9	0.8	0.7
Percentage of eligible employee contribution matched by employer	50.00%	'	'
Maximum percentage of employee deferrals subject to match by employer	6.00%	'	'
Period after which a participant may receive amounts deferred	'5 years	'	'
Vesting period of matching contributions	'4 years	'	'
Deferred compensation liabilities	19.8	14.1	'
Number of life settlement contracts	184	184	'
Face value of life settlement contracts	81.8	80.6	'
Cash surrender value of life insurance policies	$19.50	$13.40	'

Computation_of_Earnings_Per_Sh

Computation of Earnings Per Share (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

In Thousands, except Per Share data, unless otherwise specified

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2011

Sep. 30, 2011

Jun. 30, 2011

Mar. 31, 2011

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Earnings Per Share [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net Income (Loss) Attributable to Parent

$73,445

$62,188

[1]

$54,048

[1]

$63,998

[1]

$80,991

[1]

$56,145

$49,231

$46,706

$58,182

$233,759

$199,037

$261,225

$210,264

$169,071

Income from continuing operations

'

'

'

'

'

'

'

'

'

'

'

$261,225

$210,264

$167,118

Denominator for basic earnings per share—Weighted-average shares outstanding

300,223

'

296,437

'

'

'

'

'

'

299,213

295,338

295,810

292,252

286,542

Effect of dilutive securities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

RSUs

883

'

430

'

'

'

'

'

'

775

436

479

182

0

Stock options

3,564

'

4,241

'

'

'

'

'

'

3,765

4,398

4,346

4,250

5,118

Restricted stock

15

'

64

'

'

'

'

'

'

18

54

58

66

54

Denominator for diluted earnings per share—Adjusted weighted-average shares outstanding

304,685

'

301,172

'

'

'

'

'

'

303,771

300,226

300,693

296,750

291,714

Basic earnings per share from continuing operations

'

'

'

'

'

'

'

'

'

'

'

$0.88

[2]

$0.72

[2]

$0.58

[2]

Diluted earnings per share from continuing operations

'

'

'

'

'

'

'

'

'

'

'

$0.87

[2]

$0.71

[2]

$0.57

[2]

Earnings Per Share, Basic

$0.24

$0.21

[1]

$0.18

[1]

$0.22

[1]

$0.28

[1]

$0.19

[1]

$0.17

[1]

$0.16

[1]

$0.20

[1]

$0.78

$0.67

$0.88

[2]

$0.72

[2]

$0.59

[2]

Earnings Per Share, Diluted

$0.24

$0.21

[1]

$0.18

[1]

$0.21

[1]

$0.27

[1]

$0.19

[1]

$0.17

[1]

$0.16

[1]

$0.20

[1]

$0.77

$0.66

$0.87

[2]

$0.71

[2]

$0.58

[2]

[1]

Gross margin and operating income during the quarters ended March 31, 2012, June 30, 2012, September 30, 2012 and December 31, 2012 include gains of $8.3 million, $8.4 million, $0.5 million and $0.7 million, respectively, resulting from lawsuit settlements with certain of our aftermarket product suppliers as discussed in Note 8, "Commitments and Contingencies."

[2]

The sum of the individual earnings per share amounts may not equal the total due to rounding.

Schedule_of_Antidilutive_Secur

Schedule of Antidilutive Securities Excluded from Computation of Diluted Earnings Per Share (Details)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Stock Options	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share	'	'
Antidilutive securities	2,340	5,714
Restricted Stock	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share	'	'
Antidilutive securities	'	80

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Details) (USD $)	9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Line Items]	'	'	'	'	'
Effective Income Tax Rate, Continuing Operations	34.60%	36.30%	36.20%	37.40%	38.10%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	($2,600,000)	($1,200,000)	'	'	'
Undistributed earnings of foreign subsidiaries	'	'	74,000,000	'	'
Net operating loss carryforwards	'	'	4,451,000	4,722,000	'
Tax credit carryforwards	'	'	1,000,000	1,000,000	'
Valuation allowance	'	'	1,631,000	1,911,000	'
Change in valuation allowance	'	'	300,000	'	'
Accumulated interest and penalties	'	'	600,000	1,200,000	'
Accumulated interest and penalties recorded through the income tax provision	'	'	200,000	200,000	200,000
Deferred tax asset, accumulated interest balance	'	'	100,000	200,000	'
Unrecognized tax benefits that would impact effective tax rate	'	'	1,600,000	3,800,000	'
Unrecognized tax benefits that would impact deferred taxes	'	'	700,000	1,700,000	'
Estimated upper bound of reasonably possible changes in unrecognized tax benefits within the next 12 months	'	'	400,000	'	'
Estimated upper bound of reasonably possible changes in unrecognized tax benefits that will impact the effective tax rate within the next 12 months	'	'	300,000	'	'
Foreign Tax Authority	'	'	'	'	'
Income Taxes [Line Items]	'	'	'	'	'
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	-1,600,000	900,000	'	'	'
State and Local Jurisdiction	'	'	'	'	'
Income Taxes [Line Items]	'	'	'	'	'
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	$900,000	'	'	'	'

Income_Taxes_Schedule_of_Compo

Income Taxes Schedule of Components of Income Tax Expense (Benefit) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current:	'	'	'
Federal	$110,825	$97,887	$75,009
State	19,693	14,435	16,552
Foreign	13,202	3,883	2,483
Current income tax expense, total	143,720	116,205	94,044
Deferred:	'	'	'
Federal	5,824	8,376	8,928
State	-647	919	598
Foreign	-955	7	-563
Deferred income tax expense, total	4,222	9,302	8,963
Provision for income taxes	$147,942	$125,507	$103,007

Income_Taxes_Schedule_of_Incom

Income Taxes Schedule of Income before Income Tax, Domestic and Foreign (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Abstract]	'	'	'	'	'	'	'
Domestic income from continuing operations before provision for income taxes	'	'	'	'	$348,150	$319,305	$264,438
Foreign income from continuing operations before provision for income taxes	'	'	'	'	61,017	16,466	5,687
Income from continuing operations before provision for income taxes	$109,045	$83,252	$357,251	$312,548	$409,167	$335,771	$270,125

Income_Taxes_Schedule_of_Effec

Income Taxes Schedule of Effective Income Tax Rate Reconciliation (Details)	9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Abstract]	'	'	'	'	'
U.S. federal statutory rate	'	'	35.00%	35.00%	35.00%
State income taxes, net of state credits and federal tax impact	'	'	3.10%	3.10%	3.40%
Impact of international operations	'	'	-2.30%	-0.80%	-0.30%
Non-deductible expenses	'	'	0.80%	0.70%	0.30%
Federal production incentives and credits	'	'	-0.30%	-0.40%	-0.20%
Revaluation of deferred taxes	'	'	-0.30%	0.00%	-0.50%
Other, net	'	'	0.20%	-0.20%	0.40%
Effective tax rate	34.60%	36.30%	36.20%	37.40%	38.10%

Income_Taxes_Schedule_of_Defer

Income Taxes Schedule of Deferred Tax Assets and Liabilities (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Deferred Tax Assets:	'	'
Inventory	$29,523	$22,267
Accrued expenses and reserves	27,361	18,357
Accounts receivable	10,037	10,860
Stock-based compensation	9,442	8,945
Qualified and nonqualified retirement plans	7,476	5,157
Net operating loss carryforwards	4,451	4,722
Interest rate swaps	5,461	3,679
Other	4,711	8,621
Total deferred tax assets, gross	98,462	82,608
Less valuation allowance	-1,631	-1,911
Total deferred tax assets	96,831	80,697
Deferred Tax Liabilities:	'	'
Goodwill and other intangible assets	64,704	46,373
Property and equipment	48,994	44,535
Trade name	30,336	32,592
Other	1,428	1,864
Total deferred tax liabilities	145,462	125,364
Net deferred tax liability	($48,631)	($44,667)

Income_Taxes_Schedule_of_Defer1

Income Taxes Schedule of Deferred Tax Assets and Liabilities Classification (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Income Tax Disclosure [Abstract]	'	'	'
Current deferred tax assets	$53,129	$53,485	$45,690
Noncurrent deferred tax assets	'	164	'
Current deferred tax liabilities	'	5	1,561
Noncurrent deferred tax liabilities	$118,693	$102,275	$88,796

Income_Taxes_Schedule_of_Unrec

Income Taxes Schedule of Unrecognized Tax Benefits Rollforward (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]	'	'	'
Balance at January 1	$5,497	$5,441	$8,526
Additions based on tax positions related to the current year	973	952	713
Additions for tax positions of prior years	167	192	281
Reductions for tax positions of prior years	-2,379	'	-86
Reductions for tax positions of prior years—timing differences	'	'	-2,041
Lapse of statutes of limitations	-998	-892	-1,952
Settlements with taxing authorities	-957	-196	'
Balance at December 31	$2,303	$5,497	$5,441

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment [Roll Forward]	'	'	'	'	'	'	'
Balance, beginning	($11,334)	$265	$10,850	($2,071)	($2,071)	$2,202	($876)
Foreign currency translation	28,514	10,182	6,330	12,518	12,921	-4,273	3,078
Balance, ending	17,180	10,447	17,180	10,447	10,850	-2,071	2,202
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)	-15,315	-3,557	-14,170	-11,266	'	'	'
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges [Roll Forward]	'	'	'	'	'	'	'
Balance, beginning	-6,730	-9,881	-10,091	-6,890	-6,890	2,176	-6,536
Pretax (loss) income	'	'	'	'	-11,313	-19,391	3,230
Income tax expense (benefit)	5,647	1,259	5,305	3,981	3,962	6,847	-1,054
Reversal of unrealized loss (gain)	15,956	1,641	19,771	4,753	6,439	5,641	10,377
Reversal of deferred income taxes	-5,849	-585	-7,211	-1,701	-2,289	-2,019	-3,841
Hedge ineffectiveness	293	'	460	'	'	-225	'
Income tax benefit	-107	'	-169	'	'	81	'
Balance, ending	-6,105	-11,123	-6,105	-11,123	-10,091	-6,890	2,176
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans [Roll Forward]	'	'	'	'	'	'	'
Balance, beginning	'	'	'	'	'	0	15
Reversal of unrealized gain	'	'	'	'	'	'	-15
Balance, ending	'	'	'	'	'	'	0
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'	'	'	'	'	'	'
Balance, beginning	-18,064	-9,616	759	-8,961	-8,961	4,378	-7,397
Pretax income (loss)	13,199	6,625	-7,840	1,252	1,608	-23,664	6,308
Income tax expense (benefit)	-5,647	-1,259	-5,305	-3,981	-3,962	-6,847	1,054
Reversal of unrealized loss (gain)	15,956	1,641	19,771	4,753	6,439	5,641	10,362
Reversal of deferred income taxes	5,849	585	7,211	1,701	2,289	2,019	3,841
Hedge ineffectiveness	293	'	460	'	'	-225	'
Income tax benefit	-107	'	-169	'	'	81	'
Balance, ending	$11,075	($676)	$11,075	($676)	$759	($8,961)	$4,378

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) - Additional Information (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule of Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'	'	'	'
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax	$15,956	$1,641	$19,771	$4,753	$6,439	$5,641	$10,377
Foreign Exchange Forward	'	'	'	'	'	'	'
Schedule of Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'	'	'	'
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax	$14,400	'	$15,100	'	'	'	'

Segment_and_Geographic_Informa2

Segment and Geographic Information - Additional Information (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2011

Jun. 30, 2011

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Segment Reporting Information

'

'

'

'

'

'

'

'

'

'

'

'

Number of operating segments

'

'

'

'

'

'

'

3

'

3

'

'

Gain on lawsuit settlements

'

$700,000

$500,000

$8,400,000

$8,300,000

'

'

'

$17,200,000

$17,900,000

'

'

Change in fair value of contingent consideration liabilities

-712,000

200,000

-1,892,000

-1,200,000

1,300,000

-200,000

1,600,000

-1,765,000

-1,787,000

-1,643,000

1,408,000

0

Restructuring and acquisition related expenses

2,206,000

'

116,000

'

'

'

'

7,391,000

2,558,000

2,751,000

7,590,000

668,000

North America

'

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information

'

'

'

'

'

'

'

'

'

'

'

'

Number of reportable segments

'

'

'

'

'

'

'

1

'

1

'

'

Gain on lawsuit settlements

'

'

500,000

'

'

'

'

'

17,200,000

17,900,000

'

'

Change in fair value of contingent consideration liabilities

'

'

'

'

'

'

'

'

'

2,000,000

2,000,000

'

Europe

'

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information

'

'

'

'

'

'

'

'

'

'

'

'

Change in fair value of contingent consideration liabilities

800,000

'

2,100,000

'

'

'

'

-2,700,000

-1,900,000

-3,600,000

'

-600,000

Restructuring and acquisition related expenses

$1,600,000

'

'

'

'

'

'

$5,300,000

'

'

'

'

Schedule_of_Financial_Performa

Schedule of Financial Performance by Reportable Segment (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2011

Sep. 30, 2011

Jun. 30, 2011

Mar. 31, 2011

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Segment Reporting Information

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

$1,298,094

$1,067,915

[1]

$1,016,707

[1]

$1,006,531

[1]

$1,031,777

[1]

$939,632

$783,898

$759,684

$786,648

$3,745,839

$3,055,015

$4,122,930

$3,269,862

$2,469,881

EBITDA

146,402

'

109,344

'

'

'

'

'

'

458,201

386,809

510,547

418,068

339,869

Depreciation and amortization

22,157

'

18,128

'

'

'

'

'

'

61,868

51,574

70,165

54,505

41,428

North America

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

928,307

'

835,324

'

'

'

'

'

'

2,865,613

2,547,743

3,426,858

3,131,376

2,469,881

EBITDA

108,314

'

89,265

'

'

'

'

'

'

362,281

331,140

440,448

405,924

339,869

Depreciation and amortization

16,417

'

14,830

'

'

'

'

'

'

48,555

43,603

59,132

52,481

41,428

Europe

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

369,787

'

181,383

'

'

'

'

'

'

880,226

507,272

696,072

138,486

'

EBITDA

38,088

'

20,079

'

'

'

'

'

'

95,920

55,669

70,099

12,144

'

Depreciation and amortization

$5,740

'

$3,298

'

'

'

'

'

'

$13,313

$7,971

$11,033

$2,024

'

[1]

Gross margin and operating income during the quarters ended March 31, 2012, June 30, 2012, September 30, 2012 and December 31, 2012 include gains of $8.3 million, $8.4 million, $0.5 million and $0.7 million, respectively, resulting from lawsuit settlements with certain of our aftermarket product suppliers as discussed in Note 8, "Commitments and Contingencies."

Reconciliation_Of_EBITDA_To_In

Reconciliation Of EBITDA To Income From Continuing Operations (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2011

Sep. 30, 2011

Jun. 30, 2011

Mar. 31, 2011

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Segment Reporting [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

EBITDA

$146,402

'

$109,344

'

'

'

'

'

'

$458,201

$386,809

$510,547

$418,068

$339,869

Depreciation and amortization

22,157

'

18,128

'

'

'

'

'

'

61,868

51,574

70,165

54,505

41,428

Interest expense, net

15,200

'

7,964

'

'

'

'

'

'

36,287

22,687

31,215

22,447

28,316

Loss on debt extinguishment

0

'

0

'

'

'

'

'

'

2,795

0

0

5,345

0

Provision for income taxes

35,600

'

29,204

'

'

'

'

'

'

123,492

113,511

147,942

125,507

103,007

Net income

73,445

62,188

[1]

54,048

[1]

63,998

[1]

80,991

[1]

56,145

49,231

46,706

58,182

233,759

199,037

261,225

210,264

169,071

Income from continuing operations

'

'

'

'

'

'

'

'

'

'

'

$261,225

$210,264

$167,118

[1]

Gross margin and operating income during the quarters ended March 31, 2012, June 30, 2012, September 30, 2012 and December 31, 2012 include gains of $8.3 million, $8.4 million, $0.5 million and $0.7 million, respectively, resulting from lawsuit settlements with certain of our aftermarket product suppliers as discussed in Note 8, "Commitments and Contingencies."

Schedule_of_Capital_Expenditur

Schedule of Capital Expenditures by Reportable Segment (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information	'	'	'	'	'	'	'
Capital Expenditures	$20,975	$19,021	$61,126	$60,636	$88,255	$86,416	$61,438
North America	'	'	'	'	'	'	'
Segment Reporting Information	'	'	'	'	'	'	'
Capital Expenditures	14,960	15,015	48,662	49,521	73,331	84,856	61,438
Europe	'	'	'	'	'	'	'
Segment Reporting Information	'	'	'	'	'	'	'
Capital Expenditures	$6,015	$4,006	$12,464	$11,115	$14,924	$1,560	$0

Schedule_of_Assets_by_Reportab

Schedule of Assets by Reportable Segment (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
Segment Reporting Information	'	'	'	'
Receivables, net	$438,800	$311,808	$281,764	$191,085
Inventory	1,018,169	900,803	736,846	492,688
Property and Equipment, net	531,897	494,379	424,098	331,312
Other unallocated assets	2,372,193	2,016,466	1,756,996	1,284,424
Total Assets	4,361,059	3,723,456	3,199,704	2,299,509
North America	'	'	'	'
Segment Reporting Information	'	'	'	'
Receivables, net	260,413	241,627	230,871	191,085
Inventory	725,213	750,565	636,145	492,688
Property and Equipment, net	441,940	434,010	380,282	331,312
Europe	'	'	'	'
Segment Reporting Information	'	'	'	'
Receivables, net	178,387	70,181	50,893	'
Inventory	292,956	150,238	100,701	'
Property and Equipment, net	$89,957	$60,369	$43,816	'

Schedule_of_Revenue_by_Geograp

Schedule of Revenue by Geographic Area (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2011

Sep. 30, 2011

Jun. 30, 2011

Mar. 31, 2011

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Revenues from External Customers and Long-Lived Assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

$1,298,094

$1,067,915

[1]

$1,016,707

[1]

$1,006,531

[1]

$1,031,777

[1]

$939,632

$783,898

$759,684

$786,648

$3,745,839

$3,055,015

$4,122,930

$3,269,862

$2,469,881

United States

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenues from External Customers and Long-Lived Assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

868,052

'

784,270

'

'

'

'

'

'

2,672,545

2,394,581

3,209,024

2,952,620

2,366,224

United Kingdom

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenues from External Customers and Long-Lived Assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

266,384

'

181,383

'

'

'

'

'

'

708,089

507,272

696,072

138,486

'

Other countries

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenues from External Customers and Long-Lived Assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

$163,658

'

$51,054

'

'

'

'

'

'

$365,205

$153,162

$217,834

$178,756

$103,657

[1]

Gross margin and operating income during the quarters ended March 31, 2012, June 30, 2012, September 30, 2012 and December 31, 2012 include gains of $8.3 million, $8.4 million, $0.5 million and $0.7 million, respectively, resulting from lawsuit settlements with certain of our aftermarket product suppliers as discussed in Note 8, "Commitments and Contingencies."

Schedule_of_Tangible_LongLived

Schedule of Tangible Long-Lived Assets by Geographic Area (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
Revenues from External Customers and Long-Lived Assets	'	'	'	'
Long-lived Assets	$531,897	$494,379	$424,098	$331,312
United States	'	'	'	'
Revenues from External Customers and Long-Lived Assets	'	'	'	'
Long-lived Assets	411,957	408,244	360,961	'
United Kingdom	'	'	'	'
Revenues from External Customers and Long-Lived Assets	'	'	'	'
Long-lived Assets	69,309	60,369	43,816	'
Other countries	'	'	'	'
Revenues from External Customers and Long-Lived Assets	'	'	'	'
Long-lived Assets	$50,631	$25,766	$19,321	'

Schedule_of_Revenue_by_Product

Schedule of Revenue by Product Category (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2011

Sep. 30, 2011

Jun. 30, 2011

Mar. 31, 2011

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Revenue from External Customers

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

$1,298,094

$1,067,915

[1]

$1,016,707

[1]

$1,006,531

[1]

$1,031,777

[1]

$939,632

$783,898

$759,684

$786,648

$3,745,839

$3,055,015

$4,122,930

$3,269,862

$2,469,881

Aftermarket, other new and refurbished products

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customers

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

793,925

'

562,750

'

'

'

'

'

'

2,199,009

1,676,006

2,286,853

1,634,003

1,236,806

Recycled, remanufactured and related products and services

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customers

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

349,411

'

317,877

'

'

'

'

'

'

1,060,681

967,250

1,277,023

1,115,088

888,320

Other

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customers

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

$154,758

'

$136,080

'

'

'

'

'

'

$486,149

$411,759

$559,054

$520,771

$344,755

[1]

Gross margin and operating income during the quarters ended March 31, 2012, June 30, 2012, September 30, 2012 and December 31, 2012 include gains of $8.3 million, $8.4 million, $0.5 million and $0.7 million, respectively, resulting from lawsuit settlements with certain of our aftermarket product suppliers as discussed in Note 8, "Commitments and Contingencies."

Selected_Quarterly_Data_Select1

Selected Quarterly Data Selected Quarterly Data - Additional Information (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2011

Jun. 30, 2011

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Quarterly Financial Information Disclosure [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Gain on lawsuit settlements

'

$700,000

$500,000

$8,400,000

$8,300,000

'

'

'

$17,200,000

$17,900,000

'

'

Change in fair value of contingent consideration liabilities

($712,000)

$200,000

($1,892,000)

($1,200,000)

$1,300,000

($200,000)

$1,600,000

($1,765,000)

($1,787,000)

($1,643,000)

$1,408,000

$0

Selected_Quarterly_Data_Summar

Selected Quarterly Data Summary of Selected Quarterly Data (Details) (USD $)	3 Months Ended																	9 Months Ended		12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2011		Sep. 30, 2011		Jun. 30, 2011		Mar. 31, 2011		Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Quarterly Financial Information Disclosure [Abstract]	'	'		'		'		'		'		'		'		'		'	'	'		'		'
Revenue	$1,298,094	$1,067,915	[1]	$1,016,707	[1]	$1,006,531	[1]	$1,031,777	[1]	$939,632		$783,898		$759,684		$786,648		$3,745,839	$3,055,015	$4,122,930		$3,269,862		$2,469,881
Gross margin	517,907	445,121	[1]	409,705	[1]	421,931	[1]	447,383	[1]	391,789		334,322		322,236		343,646		1,529,729	1,279,019	1,724,140		1,391,993		1,093,480
Operating income	123,395	104,344	[1]	91,434	[1]	108,567	[1]	133,608	[1]	90,138		85,488		78,486		107,371		396,361	333,609	437,953		361,483		297,877
Net income	$73,445	$62,188	[1]	$54,048	[1]	$63,998	[1]	$80,991	[1]	$56,145		$49,231		$46,706		$58,182		$233,759	$199,037	$261,225		$210,264		$169,071
Earnings Per Share, Basic	$0.24	$0.21	[1]	$0.18	[1]	$0.22	[1]	$0.28	[1]	$0.19	[1]	$0.17	[1]	$0.16	[1]	$0.20	[1]	$0.78	$0.67	$0.88	[2]	$0.72	[2]	$0.59	[2]
Earnings Per Share, Diluted	$0.24	$0.21	[1]	$0.18	[1]	$0.21	[1]	$0.27	[1]	$0.19	[1]	$0.17	[1]	$0.16	[1]	$0.20	[1]	$0.77	$0.66	$0.87	[2]	$0.71	[2]	$0.58	[2]
[1]	Gross margin and operating income during the quarters ended March 31, 2012, June 30, 2012, September 30, 2012 and December 31, 2012 include gains of $8.3 million, $8.4 million, $0.5 million and $0.7 million, respectively, resulting from lawsuit settlements with certain of our aftermarket product suppliers as discussed in Note 8, "Commitments and Contingencies."
[2]	The sum of the individual earnings per share amounts may not equal the total due to rounding.

Condensed_Consolidating_Financ2

Condensed Consolidating Financial Information Condensed Consolidating Financial Information - Additional Information (Details) (Four Point Seven Five Percent Senior Notes Due May 2023, USD $)	9-May-13
In Millions, unless otherwise specified
Four Point Seven Five Percent Senior Notes Due May 2023	'
Debt Instrument	'
Debt Instrument, Interest Rate, Stated Percentage	4.75%
Debt Instrument, Face Amount	$600

Condensed_Consolidating_Financ3

Condensed Consolidating Financial Information Condensed Consolidating Balance Sheets (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
In Thousands, unless otherwise specified
Current Assets:	'	'	'	'	'	'
Cash and equivalents	$107,337	$59,770	$69,214	$48,247	$95,689	$108,906
Receivables, net	438,800	311,808	'	281,764	191,085	'
Intercompany receivables, net	0	0	'	0	'	'
Inventory	1,018,169	900,803	'	736,846	492,688	'
Deferred income taxes	53,129	53,485	'	45,690	'	'
Prepaid income taxes	13,825	29,537	'	17,597	'	'
Prepaid expenses and other current assets	44,391	28,948	'	19,591	'	'
Total Current Assets	1,675,651	1,384,351	'	1,149,735	'	'
Property and Equipment, net	531,897	494,379	'	424,098	331,312	'
Intangible Assets:	'	'	'	'	'	'
Goodwill	1,920,916	1,690,284	'	1,476,063	1,032,973	938,783
Other intangibles, net	154,429	106,715	'	108,910	'	'
Investment in Subsidiaries	0	0	'	0	'	'
Intercompany Notes Receivable	0	0	'	0	'	'
Other Assets	78,166	47,727	'	40,898	'	'
Total Assets	4,361,059	3,723,456	'	3,199,704	2,299,509	'
Current Liabilities:	'	'	'	'	'	'
Accounts payable	284,900	219,335	'	210,875	'	'
Intercompany payables, net	0	0	'	0	'	'
Accrued expenses:	'	'	'	'	'	'
Accrued payroll-related liabilities	66,366	44,400	'	53,256	'	'
Other accrued expenses	146,641	90,422	'	77,769	'	'
Income taxes payable	16,473	2,748	'	7,262	'	'
Contingent consideration liabilities	49,275	42,255	'	600	'	'
Other current liabilities	17,735	17,068	'	18,407	'	'
Current portion of long-term obligations	61,123	71,716	'	29,524	'	'
Total Current Liabilities	642,513	487,944	'	397,693	'	'
Long-Term Obligations, Excluding Current Portion	1,250,932	1,046,762	'	926,552	'	'
Intercompany Notes Payable	0	0	'	0	'	'
Deferred Income Taxes	118,693	102,275	'	88,796	'	'
Contingent Consideration Liabilities	5,210	47,754	'	81,782	'	'
Other Noncurrent Liabilities	89,605	74,627	'	60,796	'	'
Stockholders’ Equity	2,254,106	1,964,094	'	1,644,085	1,414,161	1,179,434
Total Liabilities and Stockholders’ Equity	4,361,059	3,723,456	'	3,199,704	'	'
Parent Company	'	'	'	'	'	'
Current Assets:	'	'	'	'	'	'
Cash and equivalents	35,966	18,396	13,410	9,908	70,335	74,386
Receivables, net	929	0	'	0	'	'
Intercompany receivables, net	4,719	1,781	'	2,416	'	'
Inventory	0	0	'	0	'	'
Deferred income taxes	4,774	4,778	'	3,049	'	'
Prepaid income taxes	11,444	26,538	'	15,989	'	'
Prepaid expenses and other current assets	361	1,065	'	482	'	'
Total Current Assets	58,193	52,558	'	31,844	'	'
Property and Equipment, net	737	970	'	1,097	'	'
Intangible Assets:	'	'	'	'	'	'
Goodwill	0	0	'	0	'	'
Other intangibles, net	0	0	'	0	'	'
Investment in Subsidiaries	2,303,747	1,923,997	'	1,602,727	'	'
Intercompany Notes Receivable	953,682	711,624	'	781,338	'	'
Other Assets	55,236	41,692	'	35,283	'	'
Total Assets	3,371,595	2,730,841	'	2,452,289	'	'
Current Liabilities:	'	'	'	'	'	'
Accounts payable	413	52	'	241	'	'
Intercompany payables, net	0	0	'	0	'	'
Accrued expenses:	'	'	'	'	'	'
Accrued payroll-related liabilities	4,636	3,731	'	11,076	'	'
Other accrued expenses	27,813	2,258	'	2,077	'	'
Income taxes payable	0	0	'	914	'	'
Contingent consideration liabilities	0	0	'	0	'	'
Other current liabilities	286	286	'	305	'	'
Current portion of long-term obligations	24,421	32,300	'	16,080	'	'
Total Current Liabilities	57,569	38,627	'	30,693	'	'
Long-Term Obligations, Excluding Current Portion	1,021,876	691,670	'	749,125	'	'
Intercompany Notes Payable	0	0	'	0	'	'
Deferred Income Taxes	0	0	'	0	'	'
Contingent Consideration Liabilities	0	0	'	0	'	'
Other Noncurrent Liabilities	38,044	36,450	'	28,386	'	'
Stockholders’ Equity	2,254,106	1,964,094	'	1,644,085	'	'
Total Liabilities and Stockholders’ Equity	3,371,595	2,730,841	'	2,452,289	'	'
Guarantor Subsidiaries	'	'	'	'	'	'
Current Assets:	'	'	'	'	'	'
Cash and equivalents	12,218	18,253	19,213	17,433	21,372	23,456
Receivables, net	123,256	94,435	'	214,805	'	'
Intercompany receivables, net	0	5,970	'	0	'	'
Inventory	666,819	690,365	'	595,223	'	'
Deferred income taxes	45,643	45,255	'	40,068	'	'
Prepaid income taxes	0	0	'	0	'	'
Prepaid expenses and other current assets	23,291	16,608	'	14,257	'	'
Total Current Assets	871,227	870,886	'	881,786	'	'
Property and Equipment, net	412,699	408,944	'	359,815	'	'
Intangible Assets:	'	'	'	'	'	'
Goodwill	1,238,664	1,226,718	'	1,080,358	'	'
Other intangibles, net	57,398	61,815	'	68,133	'	'
Investment in Subsidiaries	254,421	142,334	'	124,578	'	'
Intercompany Notes Receivable	94,334	39,239	'	0	'	'
Other Assets	20,055	17,830	'	15,771	'	'
Total Assets	2,948,798	2,767,766	'	2,530,441	'	'
Current Liabilities:	'	'	'	'	'	'
Accounts payable	93,076	97,678	'	92,218	'	'
Intercompany payables, net	1,236	0	'	4,966	'	'
Accrued expenses:	'	'	'	'	'	'
Accrued payroll-related liabilities	38,172	25,697	'	30,520	'	'
Other accrued expenses	57,245	48,805	'	50,399	'	'
Income taxes payable	0	0	'	0	'	'
Contingent consideration liabilities	1,875	1,518	'	600	'	'
Other current liabilities	14,339	16,241	'	11,723	'	'
Current portion of long-term obligations	3,906	9,940	'	2,253	'	'
Total Current Liabilities	209,849	199,879	'	192,679	'	'
Long-Term Obligations, Excluding Current Portion	5,925	7,549	'	6,498	'	'
Intercompany Notes Payable	611,004	681,275	'	750,545	'	'
Deferred Income Taxes	101,698	102,702	'	89,497	'	'
Contingent Consideration Liabilities	733	2,500	'	3,111	'	'
Other Noncurrent Liabilities	44,893	35,383	'	30,404	'	'
Stockholders’ Equity	1,974,696	1,738,478	'	1,457,707	'	'
Total Liabilities and Stockholders’ Equity	2,948,798	2,767,766	'	2,530,441	'	'
Non-Guarantor Subsidiaries	'	'	'	'	'	'
Current Assets:	'	'	'	'	'	'
Cash and equivalents	59,153	23,121	36,591	20,906	3,982	11,064
Receivables, net	314,615	217,373	'	66,959	'	'
Intercompany receivables, net	1,236	0	'	4,966	'	'
Inventory	351,350	210,438	'	141,623	'	'
Deferred income taxes	2,712	3,452	'	2,573	'	'
Prepaid income taxes	2,381	2,999	'	1,608	'	'
Prepaid expenses and other current assets	20,739	11,275	'	4,852	'	'
Total Current Assets	752,186	468,658	'	243,487	'	'
Property and Equipment, net	118,461	84,465	'	63,186	'	'
Intangible Assets:	'	'	'	'	'	'
Goodwill	682,252	463,566	'	395,705	'	'
Other intangibles, net	97,031	44,900	'	40,777	'	'
Investment in Subsidiaries	0	0	'	0	'	'
Intercompany Notes Receivable	0	0	'	0	'	'
Other Assets	15,453	3,528	'	2,324	'	'
Total Assets	1,665,383	1,065,117	'	745,479	'	'
Current Liabilities:	'	'	'	'	'	'
Accounts payable	191,411	121,605	'	118,416	'	'
Intercompany payables, net	4,719	7,751	'	2,416	'	'
Accrued expenses:	'	'	'	'	'	'
Accrued payroll-related liabilities	23,558	14,972	'	11,660	'	'
Other accrued expenses	61,583	39,359	'	25,293	'	'
Income taxes payable	16,473	2,748	'	6,348	'	'
Contingent consideration liabilities	47,400	40,737	'	0	'	'
Other current liabilities	3,110	541	'	6,379	'	'
Current portion of long-term obligations	32,796	29,476	'	11,191	'	'
Total Current Liabilities	381,050	257,189	'	181,703	'	'
Long-Term Obligations, Excluding Current Portion	223,131	347,543	'	170,929	'	'
Intercompany Notes Payable	437,012	69,588	'	30,793	'	'
Deferred Income Taxes	29,573	14,896	'	11,779	'	'
Contingent Consideration Liabilities	4,477	45,254	'	78,671	'	'
Other Noncurrent Liabilities	6,668	2,794	'	2,006	'	'
Stockholders’ Equity	583,472	327,853	'	269,598	'	'
Total Liabilities and Stockholders’ Equity	1,665,383	1,065,117	'	745,479	'	'
Consolidation, Eliminations	'	'	'	'	'	'
Current Assets:	'	'	'	'	'	'
Cash and equivalents	0	0	0	0	0	0
Receivables, net	0	0	'	0	'	'
Intercompany receivables, net	-5,955	-7,751	'	-7,382	'	'
Inventory	0	0	'	0	'	'
Deferred income taxes	0	0	'	0	'	'
Prepaid income taxes	0	0	'	0	'	'
Prepaid expenses and other current assets	0	0	'	0	'	'
Total Current Assets	-5,955	-7,751	'	-7,382	'	'
Property and Equipment, net	0	0	'	0	'	'
Intangible Assets:	'	'	'	'	'	'
Goodwill	0	0	'	0	'	'
Other intangibles, net	0	0	'	0	'	'
Investment in Subsidiaries	-2,558,168	-2,066,331	'	-1,727,305	'	'
Intercompany Notes Receivable	-1,048,016	-750,863	'	-781,338	'	'
Other Assets	-12,578	-15,323	'	-12,480	'	'
Total Assets	-3,624,717	-2,840,268	'	-2,528,505	'	'
Current Liabilities:	'	'	'	'	'	'
Accounts payable	0	0	'	0	'	'
Intercompany payables, net	-5,955	-7,751	'	-7,382	'	'
Accrued expenses:	'	'	'	'	'	'
Accrued payroll-related liabilities	0	0	'	0	'	'
Other accrued expenses	0	0	'	0	'	'
Income taxes payable	0	0	'	0	'	'
Contingent consideration liabilities	0	0	'	0	'	'
Other current liabilities	0	0	'	0	'	'
Current portion of long-term obligations	0	0	'	0	'	'
Total Current Liabilities	-5,955	-7,751	'	-7,382	'	'
Long-Term Obligations, Excluding Current Portion	0	0	'	0	'	'
Intercompany Notes Payable	-1,048,016	-750,863	'	-781,338	'	'
Deferred Income Taxes	-12,578	-15,323	'	-12,480	'	'
Contingent Consideration Liabilities	0	0	'	0	'	'
Other Noncurrent Liabilities	0	0	'	0	'	'
Stockholders’ Equity	-2,558,168	-2,066,331	'	-1,727,305	'	'
Total Liabilities and Stockholders’ Equity	($3,624,717)	($2,840,268)	'	($2,528,505)	'	'

Condensed_Consolidating_Financ4

Condensed Consolidating Financial Information Condensed Consolidating Statements of Income (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2011

Sep. 30, 2011

Jun. 30, 2011

Mar. 31, 2011

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Condensed Financial Statements, Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

$1,298,094

$1,067,915

[1]

$1,016,707

[1]

$1,006,531

[1]

$1,031,777

[1]

$939,632

$783,898

$759,684

$786,648

$3,745,839

$3,055,015

$4,122,930

$3,269,862

$2,469,881

Cost of goods sold

780,187

'

607,002

'

'

'

'

'

'

2,216,110

1,775,996

2,398,790

1,877,869

1,376,401

Gross margin

517,907

445,121

[1]

409,705

[1]

421,931

[1]

447,383

[1]

391,789

334,322

322,236

343,646

1,529,729

1,279,019

1,724,140

1,391,993

1,093,480

Facility and warehouse expenses

108,349

'

86,739

'

'

'

'

'

'

311,480

254,039

347,917

293,423

233,993

Distribution expenses

109,593

'

93,652

'

'

'

'

'

'

320,033

277,391

375,835

287,626

212,718

Selling, general and administrative expenses

153,546

'

121,049

'

'

'

'

'

'

436,614

364,461

495,591

391,942

310,228

Restructuring and acquisition related expenses

2,206

'

116

'

'

'

'

'

'

7,391

2,558

2,751

7,590

668

Depreciation and amortization

20,818

'

16,715

'

'

'

'

'

'

57,850

46,961

64,093

49,929

37,996

Operating income

123,395

104,344

[1]

91,434

[1]

108,567

[1]

133,608

[1]

90,138

85,488

78,486

107,371

396,361

333,609

437,953

361,483

297,877

Other expense (income):

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expense

'

'

'

'

'

'

'

'

'

'

'

31,429

24,307

29,765

Interest expense, net

15,200

'

7,964

'

'

'

'

'

'

36,287

22,687

31,215

22,447

28,316

Intercompany interest (income) expense, net

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Loss on debt extinguishment

0

'

0

'

'

'

'

'

'

2,795

0

0

5,345

0

Change in fair value of contingent consideration liabilities

712

-200

1,892

1,200

-1,300

200

'

-1,600

'

1,765

1,787

1,643

-1,408

0

Interest and other income, net

-1,562

'

-1,674

'

'

'

'

'

'

-1,737

-3,413

-4,286

-2,532

-2,013

Total other expense, net

14,350

'

8,182

'

'

'

'

'

'

39,110

21,061

28,786

25,712

27,752

Income from continuing operations before provision for income taxes

109,045

'

83,252

'

'

'

'

'

'

357,251

312,548

409,167

335,771

270,125

Provision for income taxes

35,600

'

29,204

'

'

'

'

'

'

123,492

113,511

147,942

125,507

103,007

Equity in earnings of subsidiaries

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Income from continuing operations

'

'

'

'

'

'

'

'

'

'

'

261,225

210,264

167,118

Discontinued operations:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income from discontinued operations, net of taxes

'

'

'

'

'

'

'

'

'

'

'

0

0

224

Gain on sale of discontinued operations, net of taxes

'

'

'

'

'

'

'

'

'

'

'

0

0

1,729

Income from discontinued operations

'

'

'

'

'

'

'

'

'

'

'

0

0

1,953

Net income

73,445

62,188

[1]

54,048

[1]

63,998

[1]

80,991

[1]

56,145

49,231

46,706

58,182

233,759

199,037

261,225

210,264

169,071

Parent Company

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Condensed Financial Statements, Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Cost of goods sold

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Gross margin

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Facility and warehouse expenses

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Distribution expenses

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Selling, general and administrative expenses

6,813

'

4,876

'

'

'

'

'

'

20,130

16,082

21,098

22,680

20,873

Restructuring and acquisition related expenses

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Depreciation and amortization

65

'

75

'

'

'

'

'

'

187

222

296

239

93

Operating income

-6,878

'

-4,951

'

'

'

'

'

'

-20,317

-16,304

-21,394

-22,919

-20,966

Other expense (income):

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expense

'

'

'

'

'

'

'

'

'

'

'

24,272

21,839

28,069

Interest expense, net

13,335

'

6,350

'

'

'

'

'

'

29,589

18,262

'

'

'

Intercompany interest (income) expense, net

-13,028

'

-9,367

'

'

'

'

'

'

-34,318

-27,964

-37,491

-36,018

-35,967

Loss on debt extinguishment

'

'

'

'

'

'

'

'

'

2,795

'

'

5,345

'

Change in fair value of contingent consideration liabilities

0

'

0

'

'

'

'

'

'

0

0

0

-2,000

'

Interest and other income, net

45

'

-38

'

'

'

'

'

'

172

-32

-43

-332

-129

Total other expense, net

352

'

-3,055

'

'

'

'

'

'

-1,762

-9,734

-13,262

-11,166

-8,027

Income from continuing operations before provision for income taxes

-7,230

'

-1,896

'

'

'

'

'

'

-18,555

-6,570

-8,132

-11,753

-12,939

Provision for income taxes

-2,867

'

-1,228

'

'

'

'

'

'

-7,199

-2,924

-3,287

-6,034

-6,238

Equity in earnings of subsidiaries

77,808

'

54,716

'

'

'

'

'

'

245,115

202,683

266,070

215,983

175,772

Income from continuing operations

'

'

'

'

'

'

'

'

'

'

'

'

'

169,071

Discontinued operations:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income from discontinued operations, net of taxes

'

'

'

'

'

'

'

'

'

'

'

'

'

0

Gain on sale of discontinued operations, net of taxes

'

'

'

'

'

'

'

'

'

'

'

'

'

0

Income from discontinued operations

'

'

'

'

'

'

'

'

'

'

'

'

'

0

Net income

73,445

'

54,048

'

'

'

'

'

'

233,759

199,037

261,225

210,264

169,071

Guarantor Subsidiaries

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Condensed Financial Statements, Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

876,862

'

791,672

'

'

'

'

'

'

2,698,008

2,415,328

3,236,507

2,975,275

2,370,488

Cost of goods sold

522,176

'

477,842

'

'

'

'

'

'

1,593,764

1,410,926

1,886,098

1,721,419

1,324,924

Gross margin

354,686

'

313,830

'

'

'

'

'

'

1,104,244

1,004,402

1,350,409

1,253,856

1,045,564

Facility and warehouse expenses

79,565

'

72,037

'

'

'

'

'

'

240,389

211,861

287,036

261,260

218,384

Distribution expenses

73,752

'

69,758

'

'

'

'

'

'

224,266

210,315

281,011

257,395

202,649

Selling, general and administrative expenses

93,549

'

85,360

'

'

'

'

'

'

282,364

256,001

346,596

321,403

272,797

Restructuring and acquisition related expenses

411

'

70

'

'

'

'

'

'

750

1,808

1,812

3,438

668

Depreciation and amortization

14,014

'

12,642

'

'

'

'

'

'

41,568

36,703

49,782

44,724

36,184

Operating income

93,395

'

73,963

'

'

'

'

'

'

314,907

287,714

384,172

365,636

314,882

Other expense (income):

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expense

'

'

'

'

'

'

'

'

'

'

'

308

99

560

Interest expense, net

81

'

47

'

'

'

'

'

'

621

20

'

'

'

Intercompany interest (income) expense, net

5,593

'

7,124

'

'

'

'

'

'

16,901

20,987

27,377

31,036

34,816

Loss on debt extinguishment

'

'

'

'

'

'

'

'

'

0

'

'

0

'

Change in fair value of contingent consideration liabilities

-72

'

-148

'

'

'

'

'

'

-936

-83

-1,943

11

'

Interest and other income, net

-912

'

-1,220

'

'

'

'

'

'

-2,380

-2,665

-3,638

-1,979

-1,548

Total other expense, net

4,690

'

5,803

'

'

'

'

'

'

14,206

18,259

22,104

29,167

33,828

Income from continuing operations before provision for income taxes

88,705

'

68,160

'

'

'

'

'

'

300,701

269,455

362,068

336,469

281,054

Provision for income taxes

33,973

'

27,844

'

'

'

'

'

'

115,625

106,473

140,150

128,930

108,737

Equity in earnings of subsidiaries

5,656

'

4,113

'

'

'

'

'

'

15,496

9,449

12,481

3,036

64

Income from continuing operations

'

'

'

'

'

'

'

'

'

'

'

'

'

172,381

Discontinued operations:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income from discontinued operations, net of taxes

'

'

'

'

'

'

'

'

'

'

'

'

'

224

Gain on sale of discontinued operations, net of taxes

'

'

'

'

'

'

'

'

'

'

'

'

'

1,729

Income from discontinued operations

'

'

'

'

'

'

'

'

'

'

'

'

'

1,953

Net income

60,388

'

44,429

'

'

'

'

'

'

200,572

172,431

234,399

210,575

174,334

Non-Guarantor Subsidiaries

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Condensed Financial Statements, Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

450,505

'

249,248

'

'

'

'

'

'

1,133,369

709,201

976,710

370,912

113,369

Cost of goods sold

287,284

'

153,373

'

'

'

'

'

'

707,884

434,584

602,979

232,775

65,453

Gross margin

163,221

'

95,875

'

'

'

'

'

'

425,485

274,617

373,731

138,137

47,916

Facility and warehouse expenses

28,784

'

14,702

'

'

'

'

'

'

71,091

42,178

60,881

32,163

15,609

Distribution expenses

35,841

'

23,894

'

'

'

'

'

'

95,767

67,076

94,824

30,231

10,069

Selling, general and administrative expenses

53,184

'

30,813

'

'

'

'

'

'

134,120

92,378

127,897

47,859

16,558

Restructuring and acquisition related expenses

1,795

'

46

'

'

'

'

'

'

6,641

750

939

4,152

0

Depreciation and amortization

6,739

'

3,998

'

'

'

'

'

'

16,095

10,036

14,015

4,966

1,719

Operating income

36,878

'

22,422

'

'

'

'

'

'

101,771

62,199

75,175

18,766

3,961

Other expense (income):

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expense

'

'

'

'

'

'

'

'

'

'

'

6,849

2,369

1,136

Interest expense, net

1,784

'

1,567

'

'

'

'

'

'

6,077

4,405

'

'

'

Intercompany interest (income) expense, net

7,435

'

2,243

'

'

'

'

'

'

17,417

6,977

10,114

4,982

1,151

Loss on debt extinguishment

'

'

'

'

'

'

'

'

'

0

'

'

0

'

Change in fair value of contingent consideration liabilities

784

'

2,040

'

'

'

'

'

'

2,701

1,870

3,586

581

'

Interest and other income, net

-695

'

-416

'

'

'

'

'

'

471

-716

-605

-221

-336

Total other expense, net

9,308

'

5,434

'

'

'

'

'

'

26,666

12,536

19,944

7,711

1,951

Income from continuing operations before provision for income taxes

27,570

'

16,988

'

'

'

'

'

'

75,105

49,663

55,231

11,055

2,010

Provision for income taxes

4,494

'

2,588

'

'

'

'

'

'

15,066

9,962

11,079

2,611

508

Equity in earnings of subsidiaries

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Income from continuing operations

'

'

'

'

'

'

'

'

'

'

'

'

'

1,502

Discontinued operations:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income from discontinued operations, net of taxes

'

'

'

'

'

'

'

'

'

'

'

'

'

0

Gain on sale of discontinued operations, net of taxes

'

'

'

'

'

'

'

'

'

'

'

'

'

0

Income from discontinued operations

'

'

'

'

'

'

'

'

'

'

'

'

'

0

Net income

23,076

'

14,400

'

'

'

'

'

'

60,039

39,701

44,152

8,444

1,502

Consolidation, Eliminations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Condensed Financial Statements, Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

-29,273

'

-24,213

'

'

'

'

'

'

-85,538

-69,514

-90,287

-76,325

-13,976

Cost of goods sold

-29,273

'

-24,213

'

'

'

'

'

'

-85,538

-69,514

-90,287

-76,325

-13,976

Gross margin

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Facility and warehouse expenses

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Distribution expenses

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Selling, general and administrative expenses

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Restructuring and acquisition related expenses

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Depreciation and amortization

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Operating income

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Other expense (income):

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expense

'

'

'

'

'

'

'

'

'

'

'

0

0

0

Interest expense, net

0

'

0

'

'

'

'

'

'

0

0

'

'

'

Intercompany interest (income) expense, net

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Loss on debt extinguishment

'

'

'

'

'

'

'

'

'

0

'

'

0

'

Change in fair value of contingent consideration liabilities

0

'

0

'

'

'

'

'

'

0

0

0

0

'

Interest and other income, net

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Total other expense, net

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Income from continuing operations before provision for income taxes

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Provision for income taxes

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Equity in earnings of subsidiaries

-83,464

'

-58,829

'

'

'

'

'

'

-260,611

-212,132

-278,551

-219,019

-175,836

Income from continuing operations

'

'

'

'

'

'

'

'

'

'

'

'

'

-175,836

Discontinued operations:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income from discontinued operations, net of taxes

'

'

'

'

'

'

'

'

'

'

'

'

'

0

Gain on sale of discontinued operations, net of taxes

'

'

'

'

'

'

'

'

'

'

'

'

'

0

Income from discontinued operations

'

'

'

'

'

'

'

'

'

'

'

'

'

0

Net income

($83,464)

'

($58,829)

'

'

'

'

'

'

($260,611)

($212,132)

($278,551)

($219,019)

($175,836)

[1]

Gross margin and operating income during the quarters ended March 31, 2012, June 30, 2012, September 30, 2012 and December 31, 2012 include gains of $8.3 million, $8.4 million, $0.5 million and $0.7 million, respectively, resulting from lawsuit settlements with certain of our aftermarket product suppliers as discussed in Note 8, "Commitments and Contingencies."

Condensed_Consolidating_Financ5

Condensed Consolidating Financial Information Condensed Consolidating Statements of Comprehensive Income (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2011

Sep. 30, 2011

Jun. 30, 2011

Mar. 31, 2011

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Condensed Financial Statements, Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income

$73,445

$62,188

[1]

$54,048

[1]

$63,998

[1]

$80,991

[1]

$56,145

$49,231

$46,706

$58,182

$233,759

$199,037

$261,225

$210,264

$169,071

Other comprehensive income, net of tax:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Foreign currency translation

28,514

'

10,182

'

'

'

'

'

'

6,330

12,518

12,921

-4,273

3,078

Net change in unrecognized gains/losses on derivative instruments, net of tax

625

'

-1,242

'

'

'

'

'

'

3,986

-4,233

-3,201

-9,066

8,712

Reversal of unrealized gain on pension plan, net of tax

'

'

'

'

'

'

'

'

'

'

'

0

0

-15

Total other comprehensive income (loss)

29,139

'

8,940

'

'

'

'

'

'

10,316

8,285

9,720

-13,339

11,775

Total comprehensive income

102,584

'

62,988

'

'

'

'

'

'

244,075

207,322

270,945

196,925

180,846

Parent Company

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Condensed Financial Statements, Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income

73,445

'

54,048

'

'

'

'

'

'

233,759

199,037

261,225

210,264

169,071

Other comprehensive income, net of tax:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Foreign currency translation

28,514

'

10,182

'

'

'

'

'

'

6,330

12,518

12,921

-4,273

3,078

Net change in unrecognized gains/losses on derivative instruments, net of tax

625

'

-1,242

'

'

'

'

'

'

3,986

-4,233

-3,201

-9,066

8,712

Reversal of unrealized gain on pension plan, net of tax

'

'

'

'

'

'

'

'

'

'

'

'

'

-15

Total other comprehensive income (loss)

29,139

'

8,940

'

'

'

'

'

'

10,316

8,285

9,720

-13,339

11,775

Total comprehensive income

102,584

'

62,988

'

'

'

'

'

'

244,075

207,322

270,945

196,925

180,846

Guarantor Subsidiaries

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Condensed Financial Statements, Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income

60,388

'

44,429

'

'

'

'

'

'

200,572

172,431

234,399

210,575

174,334

Other comprehensive income, net of tax:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Foreign currency translation

13,130

'

3,880

'

'

'

'

'

'

3,386

4,965

5,278

-1,440

1,517

Net change in unrecognized gains/losses on derivative instruments, net of tax

0

'

0

'

'

'

'

'

'

0

0

0

0

0

Reversal of unrealized gain on pension plan, net of tax

'

'

'

'

'

'

'

'

'

'

'

'

'

-15

Total other comprehensive income (loss)

13,130

'

3,880

'

'

'

'

'

'

3,386

4,965

5,278

-1,440

1,502

Total comprehensive income

73,518

'

48,309

'

'

'

'

'

'

203,958

177,396

239,677

209,135

175,836

Non-Guarantor Subsidiaries

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Condensed Financial Statements, Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income

23,076

'

14,400

'

'

'

'

'

'

60,039

39,701

44,152

8,444

1,502

Other comprehensive income, net of tax:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Foreign currency translation

28,104

'

9,485

'

'

'

'

'

'

7,107

11,735

12,334

-3,790

2,706

Net change in unrecognized gains/losses on derivative instruments, net of tax

127

'

-166

'

'

'

'

'

'

903

-619

-519

-1,042

0

Reversal of unrealized gain on pension plan, net of tax

'

'

'

'

'

'

'

'

'

'

'

'

'

0

Total other comprehensive income (loss)

28,231

'

9,319

'

'

'

'

'

'

8,010

11,116

11,815

-4,832

2,706

Total comprehensive income

51,307

'

23,719

'

'

'

'

'

'

68,049

50,817

55,967

3,612

4,208

Consolidation, Eliminations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Condensed Financial Statements, Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income

-83,464

'

-58,829

'

'

'

'

'

'

-260,611

-212,132

-278,551

-219,019

-175,836

Other comprehensive income, net of tax:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Foreign currency translation

-41,234

'

-13,365

'

'

'

'

'

'

-10,493

-16,700

-17,612

5,230

-4,223

Net change in unrecognized gains/losses on derivative instruments, net of tax

-127

'

166

'

'

'

'

'

'

-903

619

519

1,042

0

Reversal of unrealized gain on pension plan, net of tax

'

'

'

'

'

'

'

'

'

'

'

'

'

15

Total other comprehensive income (loss)

-41,361

'

-13,199

'

'

'

'

'

'

-11,396

-16,081

-17,093

6,272

-4,208

Total comprehensive income

($124,825)

'

($72,028)

'

'

'

'

'

'

($272,007)

($228,213)

($295,644)

($212,747)

($180,044)

[1]

Gross margin and operating income during the quarters ended March 31, 2012, June 30, 2012, September 30, 2012 and December 31, 2012 include gains of $8.3 million, $8.4 million, $0.5 million and $0.7 million, respectively, resulting from lawsuit settlements with certain of our aftermarket product suppliers as discussed in Note 8, "Commitments and Contingencies."

Condensed_Consolidating_Financ6

Condensed Consolidating Financial Information Condensed Consolidating Statements of Cash Flows (Details) (USD $)	9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'	'	'	'
Net cash provided by operating activities	$340,929	$182,072	$206,190	$211,772	$159,183
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'	'	'	'
Purchases of property and equipment	-61,126	-60,636	-88,255	-86,416	-61,438
Proceeds from sales of property and equipment	1,459	692	1,057	1,743	1,441
Proceeds from sale of businesses, net of cash sold	'	'	0	0	11,992
Investment in unconsolidated subsidiary	-9,136	0	'	'	'
Investment in subsidiaries	0	0	0	0	0
Acquisitions, net of cash acquired	-395,974	-133,123	-265,336	-486,934	-143,578
Net cash used in investing activities	-464,777	-193,067	-352,534	-571,607	-191,583
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'	'	'	'
Proceeds from exercise of stock options	13,647	14,187	17,693	11,919	13,962
Excess tax benefit from stock-based payments	15,998	11,071	15,737	7,973	15,000
Debt issuance costs	-16,912	-175	-253	-11,048	-419
Proceeds from issuance of senior notes	600,000	0	'	'	'
Borrowings under revolving credit facility	399,758	500,087	742,381	1,111,369	0
Repayments under revolving credit facility	-745,313	-747,851	-855,402	-453,867	0
Borrowings under term loans	35,000	200,000	200,000	250,000	0
Repayments under term loans	-11,250	-14,375	-20,000	-600,464	-7,476
Borrowings under receivables securitization facility	41,500	77,272	82,700	0	0
Repayments under receivables securitization facility	-111,500	0	-2,700	0	0
Repayments of other long-term debt	-19,518	-8,336	'	'	'
Payments of other obligations	-32,091	-600	-23,084	-4,471	-2,105
Investment and intercompany note activity with parent	0	0	0	0	0
Intercompany Dividend Paid	0	0	0	0	0
Net cash provided by financing activities	169,319	31,280	157,072	311,411	18,962
Effect of exchange rate changes on cash and equivalents	2,096	682	795	982	221
Net increase (decrease) in cash and equivalents	47,567	20,967	11,523	-47,442	-13,217
Cash and equivalents, beginning of period	59,770	48,247	48,247	95,689	108,906
Cash and equivalents, end of period	107,337	69,214	59,770	48,247	95,689
Parent Company	'	'	'	'	'
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'	'	'	'
Net cash provided by operating activities	101,136	134,934	150,309	72,199	53,403
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'	'	'	'
Purchases of property and equipment	-1	-45	-150	-922	-705
Proceeds from sales of property and equipment	0	0	0	2	16
Proceeds from sale of businesses, net of cash sold	'	'	'	'	0
Investment in unconsolidated subsidiary	0	'	'	'	'
Investment in subsidiaries	-418,205	-48,690	-132,006	-347,005	-77,421
Acquisitions, net of cash acquired	0	0	0	0	0
Net cash used in investing activities	-418,206	-48,735	-132,156	-347,925	-78,110
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'	'	'	'
Proceeds from exercise of stock options	13,647	14,187	17,693	11,919	13,962
Excess tax benefit from stock-based payments	15,998	11,071	15,737	7,973	15,000
Debt issuance costs	-16,830	0	-30	-10,874	-419
Proceeds from issuance of senior notes	600,000	'	'	'	'
Borrowings under revolving credit facility	315,000	442,500	612,700	748,329	'
Repayments under revolving credit facility	-616,000	-733,500	-832,700	-227,329	'
Borrowings under term loans	35,000	200,000	200,000	250,000	'
Repayments under term loans	-11,250	-14,375	-20,000	-563,079	-7,037
Borrowings under receivables securitization facility	0	0	0	'	'
Repayments under receivables securitization facility	0	'	0	'	'
Repayments of other long-term debt	-925	-2,580	'	'	'
Payments of other obligations	0	0	-3,065	-1,640	-850
Investment and intercompany note activity with parent	0	0	0	0	0
Intercompany Dividend Paid	0	0	0	0	0
Net cash provided by financing activities	334,640	-82,697	-9,665	215,299	20,656
Effect of exchange rate changes on cash and equivalents	0	0	0	0	0
Net increase (decrease) in cash and equivalents	17,570	3,502	8,488	-60,427	-4,051
Cash and equivalents, beginning of period	18,396	9,908	9,908	70,335	74,386
Cash and equivalents, end of period	35,966	13,410	18,396	9,908	70,335
Guarantor Subsidiaries	'	'	'	'	'
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'	'	'	'
Net cash provided by operating activities	195,524	252,440	289,013	201,029	163,533
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'	'	'	'
Purchases of property and equipment	-40,824	-47,446	-68,344	-79,474	-57,687
Proceeds from sales of property and equipment	1,032	458	699	1,557	1,040
Proceeds from sale of businesses, net of cash sold	'	'	'	'	11,992
Investment in unconsolidated subsidiary	0	'	'	'	'
Investment in subsidiaries	-84,893	0	0	-93,985	0
Acquisitions, net of cash acquired	-21,570	-110,713	-183,716	-193,292	-121,384
Net cash used in investing activities	-146,255	-157,701	-251,361	-365,194	-166,039
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'	'	'	'
Proceeds from exercise of stock options	0	0	0	0	0
Excess tax benefit from stock-based payments	0	0	0	0	0
Debt issuance costs	0	0	0	0	0
Proceeds from issuance of senior notes	0	'	'	'	'
Borrowings under revolving credit facility	0	0	0	0	'
Repayments under revolving credit facility	0	0	0	0	'
Borrowings under term loans	0	0	0	0	'
Repayments under term loans	0	0	0	0	0
Borrowings under receivables securitization facility	0	0	0	'	'
Repayments under receivables securitization facility	0	'	0	'	'
Repayments of other long-term debt	-7,983	-1,834	'	'	'
Payments of other obligations	-473	-600	-6,861	-849	-399
Investment and intercompany note activity with parent	-25,095	-47,754	-129,076	-226,872	-56,459
Intercompany Dividend Paid	-71,943	-138,279	-159,047	-65,797	-55,638
Net cash provided by financing activities	-55,304	-92,959	-36,832	160,226	422
Effect of exchange rate changes on cash and equivalents	0	0	0	0	0
Net increase (decrease) in cash and equivalents	-6,035	1,780	820	-3,939	-2,084
Cash and equivalents, beginning of period	18,253	17,433	17,433	21,372	23,456
Cash and equivalents, end of period	12,218	19,213	18,253	17,433	21,372
Non-Guarantor Subsidiaries	'	'	'	'	'
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'	'	'	'
Net cash provided by operating activities	116,212	-67,023	-74,085	4,341	-2,115
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'	'	'	'
Purchases of property and equipment	-20,301	-13,145	-19,761	-6,020	-3,046
Proceeds from sales of property and equipment	427	234	358	184	385
Proceeds from sale of businesses, net of cash sold	'	'	'	'	0
Investment in unconsolidated subsidiary	-9,136	'	'	'	'
Investment in subsidiaries	0	0	0	0	0
Acquisitions, net of cash acquired	-374,404	-22,410	-81,620	-293,642	-22,194
Net cash used in investing activities	-403,414	-35,321	-101,023	-299,478	-24,855
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'	'	'	'
Proceeds from exercise of stock options	0	0	0	0	0
Excess tax benefit from stock-based payments	0	0	0	0	0
Debt issuance costs	-82	-175	-223	-174	0
Proceeds from issuance of senior notes	0	'	'	'	'
Borrowings under revolving credit facility	84,758	57,587	129,681	363,040	'
Repayments under revolving credit facility	-129,313	-14,351	-22,702	-226,538	'
Borrowings under term loans	0	0	0	0	'
Repayments under term loans	0	0	0	-37,385	-439
Borrowings under receivables securitization facility	41,500	77,272	82,700	'	'
Repayments under receivables securitization facility	-111,500	'	-2,700	'	'
Repayments of other long-term debt	-10,610	-3,922	'	'	'
Payments of other obligations	-31,618	0	-13,158	-1,982	-856
Investment and intercompany note activity with parent	-478,003	-936	-2,930	-214,118	-20,962
Intercompany Dividend Paid	0	0	0	0	0
Net cash provided by financing activities	321,138	117,347	176,528	311,079	19,667
Effect of exchange rate changes on cash and equivalents	2,096	682	795	982	221
Net increase (decrease) in cash and equivalents	36,032	15,685	2,215	16,924	-7,082
Cash and equivalents, beginning of period	23,121	20,906	20,906	3,982	11,064
Cash and equivalents, end of period	59,153	36,591	23,121	20,906	3,982
Consolidation, Eliminations	'	'	'	'	'
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'	'	'	'
Net cash provided by operating activities	-71,943	-138,279	-159,047	-65,797	-55,638
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'	'	'	'
Purchases of property and equipment	0	0	0	0	0
Proceeds from sales of property and equipment	0	0	0	0	0
Proceeds from sale of businesses, net of cash sold	'	'	'	'	0
Investment in unconsolidated subsidiary	0	'	'	'	'
Investment in subsidiaries	503,098	48,690	132,006	440,990	77,421
Acquisitions, net of cash acquired	0	0	0	0	0
Net cash used in investing activities	503,098	48,690	132,006	440,990	77,421
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'	'	'	'
Proceeds from exercise of stock options	0	0	0	0	0
Excess tax benefit from stock-based payments	0	0	0	0	0
Debt issuance costs	0	0	0	0	0
Proceeds from issuance of senior notes	0	'	'	'	'
Borrowings under revolving credit facility	0	0	0	0	'
Repayments under revolving credit facility	0	0	0	0	'
Borrowings under term loans	0	0	0	0	'
Repayments under term loans	0	0	0	0	0
Borrowings under receivables securitization facility	0	0	0	'	'
Repayments under receivables securitization facility	0	'	0	'	'
Repayments of other long-term debt	0	0	'	'	'
Payments of other obligations	0	0	0	0	0
Investment and intercompany note activity with parent	503,098	48,690	132,006	440,990	77,421
Intercompany Dividend Paid	71,943	138,279	159,047	65,797	55,638
Net cash provided by financing activities	-431,155	89,589	27,041	-375,193	-21,783
Effect of exchange rate changes on cash and equivalents	0	0	0	0	0
Net increase (decrease) in cash and equivalents	0	0	0	0	0
Cash and equivalents, beginning of period	0	0	0	0	0
Cash and equivalents, end of period	$0	$0	$0	$0	$0

Schedule_IIValuation_and_Quali1

Schedule II-Valuation and Qualifying Accounts and Reserves Schedule II-Valuation and Qualifying Accounts and Reserves (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Allowance for Doubtful Accounts	'	'	'
Valuation and Qualifying Accounts Disclosure [Line Items]	'	'	'
Balance at Beginning of Period	$8,347	$6,895	$6,507
Additions Charged to Costs and Expenses	5,928	5,084	4,326
Acquisitions and Other	308	2,199	1,125
Deductions	-5,113	-5,831	-5,063
Balance at End of Period	9,470	8,347	6,895
Allowance for Estimated Returns, Discounts & Allowances	'	'	'
Valuation and Qualifying Accounts Disclosure [Line Items]	'	'	'
Balance at Beginning of Period	22,804	18,185	15,802
Additions Charged to Costs and Expenses	714,880	668,936	541,314
Acquisitions and Other	1,151	2,754	1,061
Deductions	-714,143	-667,071	-539,992
Balance at End of Period	$24,692	$22,804	$18,185