Document And Entity Information	9 Months Ended
Document And Entity Information	Sep. 28, 2013	Oct. 28, 2013
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 28, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Trading Symbol	GRMN
Entity Common Stock, Shares Outstanding		208,077,418
Entity Registrant Name	GARMIN LTD
Entity Central Index Key	0001121788
Current Fiscal Year End Date	--12-28
Entity Filer Category	Large Accelerated Filer

Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 28, 2013	Dec. 29, 2012
Current assets:
Cash and cash equivalents	$ 1,068,700	$ 1,231,180
Marketable securities	134,253	153,083
Accounts receivable, net	475,707	603,673
Inventories, net	416,725	389,931
Deferred income taxes	67,437	68,785
Deferred costs	56,749	53,948
Prepaid expenses and other current assets	225,067	35,520
Total current assets	2,444,638	2,536,120
Property and equipment, net	413,675	409,751
Marketable securities	1,594,144	1,488,312
Restricted cash	252	836
Noncurrent deferred income tax	94,734	93,920
Noncurrent deferred costs	39,625	42,359
Other intangible assets, net	221,979	232,597
Other assets	14,179	15,229
Total assets	4,823,226	4,819,124
Current liabilities:
Accounts payable	151,798	131,263
Salaries and benefits payable	63,064	55,969
Accrued warranty costs	34,639	37,301
Accrued sales program costs	36,487	57,080
Deferred revenue	255,830	252,375
Accrued royalty costs	34,285	71,745
Accrued advertising expense	16,862	25,192
Other accrued expenses	73,241	69,806
Deferred income taxes	63	332
Income taxes payable	44,060	32,031
Dividend payable	263,704	175,932
Total current liabilities	974,033	909,026
Deferred income taxes	3,516	2,467
Non-current income taxes	121,091	181,754
Non-current deferred revenue	166,165	193,047
Other liabilities	917	1,034
Stockholders' equity:
Shares, CHF 10 par value, 208,077,418 shares authorized and issued; 195,221,791 shares outstanding at September 28, 2013 and 195,591,854 shares outstanding at December 29, 2012	1,797,435	1,797,435
Additional paid-in capital	87,377	72,462
Treasury stock	(100,912)	(81,280)
Retained earnings	1,701,823	1,604,625
Accumulated other comprehensive income	71,781	138,554
Total stockholders' equity	3,557,504	3,531,796
Total liabilities and stockholders' equity	$ 4,823,226	$ 4,819,124

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 28, 2013	Dec. 29, 2012
Shares, par value	$ 10	$ 10
Shares, shares authorized	208,077,418	208,077,418
Shares, shares issued	208,077,418	208,077,418
Shares, shares outstanding	195,221,791	195,591,854

Condensed Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Net sales	$ 643,637	$ 672,376	$ 1,872,156	$ 1,947,127
Cost of goods sold	290,748	313,321	859,494	882,501
Gross profit	352,889	359,055	1,012,662	1,064,626
Advertising expense	26,251	30,102	77,983	91,952
Selling, general and administrative expense	86,462	86,402	260,769	275,763
Research and development expense	88,427	82,489	272,349	242,510
Total operating expense	201,140	198,993	611,101	610,225
Operating income	151,749	160,062	401,561	454,401
Other income (expense):
Interest income	8,435	7,987	25,512	26,278
Foreign currency gains (losses)	(822)	(6,364)	18,280	(16,124)
Other	1,438	942	3,666	5,064
Total other income (expense)	9,051	2,565	47,458	15,218
Income before income taxes	160,800	162,627	449,019	469,619
Income tax (benefit) provision	(26,869)	22,279	192	56,510
Net income	$ 187,669	$ 140,348	$ 448,827	$ 413,109
Net income per share:
Basic	$ 0.96	$ 0.72	$ 2.30	$ 2.12
Diluted	$ 0.96	$ 0.72	$ 2.29	$ 2.11
Weighted average common shares outstanding:
Basic	195,325	194,912	195,488	194,834
Diluted	196,300	196,161	196,312	196,171
Dividends declared per share			$ 1.80	$ 1.80

Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Net income	$ 187,669	$ 140,348	$ 448,827	$ 413,109
Translation adjustment	13,379	22,591	(24,177)	31,881
Change in fair value of available-for-sale marketable securities, net of deferred taxes	(6,441)	3,844	(42,596)	2,543
Comprehensive income	$ 194,607	$ 166,783	$ 382,054	$ 447,533

Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012
Operating Activities:
Net income	$ 448,827	$ 413,109
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	36,840	40,025
Amortization	23,629	21,192
(Gain)/Loss on sale of property and equipment	41	(17)
Provision for doubtful accounts	1,023	2,786
Deferred income taxes	2,851	(7,384)
Unrealized foreign currency losses/(gains)	(17,273)	24,974
Provision for obsolete and slow moving inventories	15,965	3,795
Stock compensation expense	15,608	26,364
Realized gains on marketable securities	(2,963)	(1,647)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	128,098	103,039
Inventories	(44,337)	(44,761)
Other current and non-current assets	(18,329)	14,051
Accounts payable	21,936	(20,271)
Other current and non-current liabilities	(60,719)	(63,839)
Deferred revenue	(22,613)	35,277
Deferred cost	(57)	(8,561)
Income taxes payable	(48,256)	(28,098)
Net cash provided by operating activities	480,271	510,034
Investing activities:
Purchases of property and equipment	(41,325)	(26,881)
Proceeds from sale of property and equipment	65	25
Purchase of intangible assets	(1,574)	(5,174)
Purchase of marketable securities	(716,226)	(1,004,021)
Redemption of marketable securities	578,464	735,521
Advances under loan receivable commitment	(173,708)	0
Change in restricted cash	584	(59)
Acquisitions, net of cash acquired	(5,686)	(4,010)
Net cash used in investing activities	(359,406)	(304,599)
Financing activities:
Dividends paid	(263,857)	(253,386)
Purchase of treasury stock under share repurchase plan	(26,926)	0
Purchase of treasury stock related to equity awards	(7,430)	(6,542)
Proceeds from issuance of treasury stock related to equity awards	13,620	10,971
Tax benefit from issuance of equity awards	411	1,810
Net cash used in financing activities	(284,182)	(247,147)
Effect of exchange rate changes on cash and cash equivalents	837	1,625
Net increase/(decrease) in cash and cash equivalents	(162,480)	(40,087)
Cash and cash equivalents at beginning of period	1,231,180	1,287,160
Cash and cash equivalents at end of period	$ 1,068,700	$ 1,247,073

Basis of Presentation

9 Months Ended

Sep. 28, 2013

Organization, Consolidation and Presentation Of Financial Statements [Abstract]

Basis of Presentation

1. Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the 13-week and 39-week periods ended September 28, 2013 are not necessarily indicative of the results that may be expected for the year ending December 28, 2013.

The condensed consolidated balance sheet at December 29, 2012 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 29, 2012.

The Company’s fiscal year is based on a 52-53 week period ending on the last Saturday of the calendar year. Therefore the financial results of certain fiscal years, and the associated 14-week quarters, will not be exactly comparable to the prior and subsequent 52-week fiscal years and the associated quarters having only 13 weeks. The quarters ended September 28, 2013 and September 29, 2012 both contain operating results for 13 weeks.

Inventories

9 Months Ended

Sep. 28, 2013

Inventory Disclosure [Abstract]

Inventories

2. Inventories

The components of inventories consist of the following:

	September 28, 2013		December 29, 2012
Raw materials	$	136,923	$	119,142
Work-in-process		52,894		53,656
Finished goods		256,996		243,238
Inventory reserves		(30,088)		(26,105)
Inventory, net of reserves	$	416,725	$	389,931

Earnings Per Share

9 Months Ended

Sep. 28, 2013

Earnings Per Share [Abstract]

Earnings Per Share

3. Earnings Per Share

The following table sets forth the computation of basic and diluted net income per share:

	13-Weeks Ended
	Sept 28,		Sept 29,
	2013		2012
Numerator:
Numerator for basic and diluted net income per share - net income	$	187,669	$	140,348

Denominator:
Denominator for basic net income per share – weighted-average common shares		195,325		194,912

Effect of dilutive securities – stock options, stock appreciation rights and restricted stock units		975		1,249

Denominator for diluted net income per share – adjusted weighted-average common shares		196,300		196,161

Basic net income per share	$	0.96	$	0.72

Diluted net income per share	$	0.96	$	0.72

	39-Weeks Ended
	Sept 28,		Sept 29,
	2013		2012
Numerator:
Numerator for basic and diluted net income per share - net income	$	448,827	$	413,109

Denominator:
Denominator for basic net income per share – weighted-average common shares		195,488		194,834

Effect of dilutive securities – stock options, stock appreciation rights and restricted stock units		824		1,337

Denominator for diluted net income per share – adjusted weighted-average common shares		196,312		196,171

Basic net income per share	$	2.30	$	2.12

Diluted net income per share	$	2.29	$	2.11

There were 5,443,047 and 5,599,936 anti-dilutive stock options, stock appreciation rights and restricted stock units (collectively “equity awards”) for the 13-week periods ended September 28, 2013 and September 29, 2012, respectively.

There were 5,507,363 and 5,667,000 anti-dilutive equity awards for the 39-week periods ended September 28, 2013 and September 29, 2012, respectively.

There were 233,703 and 94,668 shares issued as a result of exercises of equity awards for the 13-week periods ended September 28, 2013 and September 29, 2012, respectively.

There were 344,254 and 307,386 shares issued as a result of exercises of equity awards for the 39-week periods ended September 28, 2013 and September 29, 2012, respectively.

Segment Information

9 Months Ended

Sep. 28, 2013

Segment Reporting [Abstract]

Segment Information

4. Segment Information

The Company has identified five operating segments – Auto/Mobile, Aviation, Marine, Outdoor and Fitness. Each operating segment is individually reviewed and evaluated by our Chief Operating Decision Maker, who allocates resources and assesses performance of each segment individually.

Net sales, operating income, and income before taxes for each of the Company’s reportable segments are presented below:

	Reportable Segments
							Auto/
	Outdoor		Fitness		Marine		Mobile		Aviation		Total
13-Weeks Ended September 28, 2013

Net sales	$	101,350	$	81,007	$	55,301	$	322,520	$	83,459	$	643,637
Operating income	$	44,107	$	26,493	$	4,118	$	53,848	$	23,183	$	151,749
Income before taxes	$	45,556	$	27,938	$	4,347	$	58,144	$	24,815	$	160,800

13-Weeks Ended September 29, 2012

Net sales	$	105,572	$	64,788	$	44,766	$	384,393	$	72,857	$	672,376
Operating income	$	48,384	$	21,219	$	8,378	$	65,165	$	16,916	$	160,062
Income before taxes	$	48,953	$	21,853	$	8,705	$	65,399	$	17,717	$	162,627

39-Weeks Ended September 28, 2013

Net sales	$	284,372	$	237,660	$	178,344	$	919,810	$	251,970	$	1,872,156
Operating income	$	110,538	$	76,026	$	16,089	$	134,324	$	64,584	$	401,561
Income before taxes	$	117,996	$	81,186	$	20,828	$	160,803	$	68,206	$	449,019

39-Weeks Ended September 29, 2012

Net sales	$	283,230	$	217,815	$	168,620	$	1,055,786	$	221,676	$	1,947,127
Operating income	$	118,032	$	76,016	$	35,584	$	170,208	$	54,561	$	454,401
Income before taxes	$	119,971	$	77,916	$	36,596	$	178,978	$	56,158	$	469,619

Allocation of certain research and development expenses, and selling, general, and administrative expenses are made to each segment on a percent of revenue basis.

Net sales and property and equipment, net by geographic area are as follows as of and for the 39-week periods ended September 28, 2013 and September 29, 2012. Note that APAC includes Asia Pacific and EMEA includes Europe, the Middle East and Africa:

	Americas		APAC		EMEA		Total
September 28, 2013
Net sales to external customers	$	1,002,796	$	176,524	$	692,836	$	1,872,156
Property and equipment, net	$	235,520	$	123,763	$	54,392	$	413,675

September 29, 2012
Net sales to external customers	$	1,068,289	$	186,165	$	692,673	$	1,947,127
Property and equipment, net	$	221,085	$	135,227	$	51,541	$	407,853

Warranty Reserves

9 Months Ended

Sep. 28, 2013

Product Warranties Disclosures [Abstract]

Warranty Reserves

5. Warranty Reserves

The Company’s products sold are generally covered by a warranty for periods ranging from one to two years. The Company’s estimate of costs to service its warranty obligations are based on historical experience and expectation of future conditions and are recorded as a liability on the balance sheet. The following reconciliation provides an illustration of changes in the aggregate warranty reserve.

	13-Weeks Ended
	Sept 28,		Sept 29,
	2013		2012
Balance - beginning of the period	$	34,288	$	40,797
Accrual for products sold		10,884		9,009
Expenditures		(10,533)		(10,659)
Balance - end of the period	$	34,639	$	39,147

	39-Weeks Ended
	Sept 28,		Sept 29,
	2013		2012
Balance - beginning of the period	$	37,301	$	46,773
Accrual for products sold		29,076		24,863
Expenditures		(31,738)		(32,489)
Balance - end of the period	$	34,639	$	39,147

Commitments and Contingencies

9 Months Ended

Sep. 28, 2013

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

6. Commitments and Contingencies

We are party to certain commitments, which includes raw materials, advertising and other indirect purchases in connection with conducting our business. Pursuant to these agreements, the Company is contractually committed to make purchases of approximately $213,173 over the next five years.

In the normal course of business, the Company and its subsidiaries are parties to various legal claims, actions, and complaints, including matters involving patent infringement, other intellectual property, product liability, customer claims and various other risks. It is not possible to predict with certainty whether or not the Company and its subsidiaries will ultimately be successful in any of these legal matters, or if not, what the impact might be. However, the Company’s management does not expect that the results in any of these legal proceedings will have a material adverse effect on the Company’s results of operations, financial position or cash flows.

On March 14, 2013, the Company entered into a Memorandum of Agreement (the “Agreement”) with Bombardier, Inc. (“Bombardier”). The Company is the supplier of the avionics system for the Lear 70 and Lear 75 aircraft currently in development for Learjet, Inc., which is a subsidiary of Bombardier (the “Program”). In order to assist Bombardier in connection with delayed cash flows from the Program partially related to the certification of avionics for the Program exceeding the planned delivery date, the Company agreed to provide Bombardier a short term, interest free, loan of $173,708 in cash in seven installments beginning on March 22, 2013 and ending on September 20, 2013 pursuant to the terms and conditions of the Agreement. Bombardier will repay the loan in five installments beginning in November 2013 and ending in March 2014 pursuant to the terms and conditions of the Agreement. As of September 28, 2013, the Company had advanced $173,708 to Bombardier, which is included in prepaid and other current assets in the accompanying condensed consolidated balance sheet.

Income Taxes

9 Months Ended

Sep. 28, 2013

Income Tax Disclosure [Abstract]

Income Taxes

7. Income Taxes

Our earnings before taxes decreased 1.1% when compared to the same quarter in 2012, while our income tax expense decreased by $49,148, to ($26,869) for the 13-week period ended September 28, 2013, from $22,279 for the 13-week period ended September 29, 2012. The significant decline was due primarily to the impact of a $52,180 benefit in the third quarter which includes the release of uncertain tax position reserves from 2009 offset by Taiwan surtax expense due to this reserve release. Excluding this item, we would have reported an effective tax rate of 15.7% in the third quarter of 2013 compared to 13.7% in the third quarter of 2012. This increase was primarily driven by an unfavorable income mix across tax jurisdictions, as well as the release of other uncertain tax position reserves, amounting to approximately ($401) in third quarter 2013 and $1,737 in the third quarter 2012 that are considered immaterial, tend to be more recurring in nature and are comparable between periods.

Our earnings before taxes decreased 4.4% when compared to the same period in 2012, while our income tax expense decreased by $56,318 to $192, for the 39-week period ended September 28, 2013, from $56,510 for the 39-week period ended September 29, 2012. The significant decline was due to the impact of a $52,180 benefit in the third quarter, which includes the release of uncertain tax position reserves from 2009 offset by Taiwan surtax expense due to this reserve release and a $16,536 benefit in the first quarter of 2013, also related to reserve releases. Excluding these items, we would have reported an effective tax rate of 15.3% for the first three quarters of 2013 compared to 12.0% for the first three quarters of 2012. This increase was primarily driven by an unfavorable income mix across tax jurisdictions, as well as the release of other uncertain tax position reserves amounting to approximately $9,556 for the 39-weeks ended September 28, 2013 and $11,945 for the 39-weeks ended September 29, 2012 that are considered immaterial, tend to be more recurring in nature and are comparable between periods, partially offset by the impact of $6,301 of research and development tax credits related to 2012 which were recognized when the related legislation was enacted in January 2013.

Marketable Securities

9 Months Ended

Sep. 28, 2013

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

8. Marketable Securities

The FASB ASC topic entitled Fair Value Measurements and Disclosures defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). The accounting guidance classifies the inputs used to measure fair value into the following hierarchy:

Level 1	Unadjusted quoted prices in active markets for identical assets or liability

Level 2	Observable inputs for the asset or liability, either directly or indirectly, such as quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs other than quoted prices that are observable for the asset or liability

Level 3	Unobservable inputs for the asset or liability

The Company endeavors to utilize the best available information in measuring fair value. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The valuation methods used by the Company for each significant class of investments are summarized below.

Mortgage-backed securities, corporate bonds and obligations of states and political subdivisions – Valued based on prices obtained from an independent pricing vendor using both market and income approaches. The primary inputs to the valuation include quoted prices for similar assets in active markets, quoted prices for identical or similar assets in markets that are not active, contractual cash flows, benchmark yields, and credit spreads.

Common stocks – Valued at the closing price reported on the active market on which the individual securities are traded.

The methods described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Company believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

Available for sale securities measured at estimated fair value on a recurring basis are summarized below:

	Fair Value Measurements as of September 28, 2013
Description	Total		Level 1		Level 2		Level 3

Mortgage-backed securities	$	518,840	$	-	$	518,840	$	-
Obligations of states and political subdivisions		690,615		-		690,615		-
Corporate bonds		420,345		-		420,345		-
Common stocks		27,435		27,435		-		-
Other		71,162		-		71,162		-
Total	$	1,728,397	$	27,435	$	1,700,962	$	-

	Fair Value Measurements as
	of December 29, 2012
Description	Total		Level 1		Level 2		Level 3

Mortgage-backed securities	$	650,895	$	-	$	650,895	$	-
Obligations of states and political subdivisions		499,857		-		499,857		-
Corporate bonds		399,941		-		399,941		-
Common stocks		22,982		22,982		-		-
Other		67,720		-		67,720		-
Total	$	1,641,395	$	22,982	$	1,618,413	$	-

The following is a summary of the Company’s marketable securities classified as available-for-sale securities at September 28, 2013:

									Estimated Fair
					Gross		Other Than		Value (Net
			Gross Unrealized		Unrealized		Temporary		Carrying
	Amortized Cost		Gains		Losses		Impairment		Amount)
Mortgage-backed securities	$	534,722	$	4,386	$	(20,268)	$	-	$	518,840
Obligations of states and political subdivisions		711,989		1,649		(23,023)		-		690,615
U.S. corporate bonds		424,439		1,658		(4,478)		(1,274)		420,345
Common stocks		23,795		3,975		(335)		-		27,435
Other		67,914		3,335		(87)		-		71,162
Total	$	1,762,859	$	15,003	$	(48,191)	$	(1,274)	$	1,728,397

In the first three quarters of 2013, Garmin experienced unrealized, non-cash losses on its investment portfolio resulting in a balance of $48,191 of gross unrealized losses on marketable securities at September 28, 2013. The amortized cost and estimated fair value of the securities at an unrealized loss position at September 28, 2013 were $1,165,053 and $1,116,862, respectively. This decrease in estimated fair value is primarily due to market valuations on mortgage-backed securities and obligations of states and political subdivisions declining. The decline was due to increases in the 10 Year Treasury Bond Yield during the second and third quarters, which caused market valuations of certain securities in our investment portfolios to decline. Approximately 47% of the securities in our portfolio were at an unrealized loss position at September 28, 2013. We have the ability to hold these securities until maturity or their value is recovered. We do not consider these unrealized losses to be other than temporary and no impairment has been recorded in the accompanying condensed consolidated statement of income.

The following is a summary of the Company’s marketable securities classified as available-for-sale securities at December 29, 2012:

									Estimated Fair
					Gross		Other Than		Value (Net
			Gross Unrealized		Unrealized		Temporary		Carrying
	Amortized Cost		Gains		Losses		Impairment		Amount)
Mortgage-backed securities	$	644,388	$	8,894	$	(2,387)	$	-	$	650,895
Obligations of states and political subdivisions		499,241		2,345		(1,729)		-		499,857
U.S. corporate bonds		400,310		3,138		(2,233)		(1,274)		399,941
Common stocks		21,113		2,392		(523)		-		22,982
Other		67,181		551		(12)		-		67,720
Total	$	1,632,233	$	17,320	$	(6,884)	$	(1,274)	$	1,641,395

The cost of securities sold is based on the specific identification method.

The amortized cost and estimated fair value of marketable securities at September 28, 2013, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties.

	Cost		Estimated Fair Value
Due in one year or less	$	136,835	$	134,253
Due after one year through five years		688,846		686,299
Due after five years through ten years		257,244		249,112
Due after ten years		621,050		592,932
Other (No contractual maturity dates)		58,884		65,801
	$	1,762,859	$	1,728,397

Share Repurchase Plan

9 Months Ended

Sep. 28, 2013

Treasury Stock [Abstract]

Share Repurchase Plan

9. Share Repurchase Plan

On February 15, 2013, the Board of Directors approved a share repurchase program authorizing the Company to purchase up to $300,000 of its common shares. A Rule 10b5-1 plan was adopted and allows the repurchase of its shares at times when it otherwise might be prevented from doing so under insider trading laws or because of self-imposed trading blackout periods. The share repurchase authorization expires on December 31, 2014. As of September 28, 2013, the Company had repurchased 713,092 shares using cash of $26,926. There remains approximately $273,074 available for repurchase under this authorization.

Accumulated Other Comprehensive Income

9 Months Ended

Sep. 28, 2013

Accumulated Other Comprehensive Income [Abstract]

Accumulated Other Comprehensive Income

10. Accumulated Other Comprehensive Income

The following provides required disclosure of changes in accumulated other comprehensive income (AOCI) balances by component for the 13-week and 39-week periods ended September 28, 2013:

	13-Weeks Ended Sept 28, 2013
	Foreign Currency Translation Adjustment		Unrealized Gains (Losses) on Available for Sale Securities		Total
Balance - beginning of period	$	91,416	$	(26,573)	$	64,843
Other comprehensive income before reclassification		13,379		(6,336)		7,043
Amounts reclassified from accumulated other comprehensive income		-		(105)		(105)
Net current-period other comprehensive income		13,379		(6,441)		6,938
Balance - end of period	$	104,795	$	(33,014)	$	71,781

	39-Weeks Ended Sept 28, 2013
	Foreign Currency Translation Adjustment		Unrealized Gains (Losses) on Available for Sale Securities		Total
Balance - beginning of period	$	128,972	$	9,582	$	138,554
Other comprehensive income before reclassification		(24,177)		(39,810)		(63,987)
Amounts reclassified from accumulated other comprehensive income		-		(2,786)		(2,786)
Net current-period other comprehensive income		(24,177)		(42,596)		(66,773)
Balance - end of period	$	104,795	$	(33,014)	$	71,781

The following provides required disclosure of reporting reclassifications out of AOCI for the 13-week and 39-week periods ended September 28, 2013:

13-Weeks Ended Sept 28, 2013
Details about Accumulated Other Comprehensive Income Components		Amount Reclassified from Accumulated Other Comprehensive Income	Affected Line Item in the Statement Where Net Income is Presented
Unrealized gains (losses) on available-for-sale securities	$	137	Other income (expense)
		(32)	Income tax provision
	$	105	Net of tax

39-Weeks Ended Sept 28, 2013
Details about Accumulated Other Comprehensive Income Components	Amount Reclassified from Accumulated Other Comprehensive Income		Affected Line Item in the Statement Where Net Income is Presented
Unrealized gains (losses) on available-for-sale securities	$	2,963	Other income (expense)
		(177)	Income tax provision
	$	2,786	Net of tax

License Fees

9 Months Ended

Sep. 28, 2013

License Fees Disclosure [Abstract]

License Fees

11. License Fees

During the second quarter of 2012, the Company determined certain license fee payments to one of its suppliers had exceeded contractual requirements since the third quarter of 2010. The periodic royalty audit by the supplier, which was already underway, was completed in June 2012, resulting in a net overpayment of such license fees of $20.8 million. This credit is reflected in cost of goods sold for the 39-week period ended September 29, 2012.

Recently Issued Accounting Pronouncements

9 Months Ended

Sep. 28, 2013

New Accounting Pronouncements and Changes In Accounting Principles [Abstract]

Recently Issued Accounting Pronouncements

12. Recently Issued Accounting Pronouncements

In July 2012, the FASB issued Accounting Standards Update No. 2012-02 “Testing Indefinite-Lived Intangible Assets for Impairment” (ASU 2012-02), which is included in ASC Topic 350 (Intangibles—Goodwill and Other). ASU 2012-02 provides an option for companies to use a qualitative approach to test indefinite-lived intangible assets for impairment if certain conditions are met. The amendments are effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. The implementation of the amended accounting guidance did not have a material impact on the Company’s financial statements.

In February 2013, the FASB issued Accounting Standards Update No. 2013-02 “Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income” (ASU 2013-02), which is included in ASC Topic 220 (Comprehensive Income). The objective of ASU 2013-02 is to improve the reporting of reclassifications out of accumulated other comprehensive income. The amendments are effective prospectively for reporting periods beginning after December 15, 2012. The Company has implemented this amendment and has included the required disclosure in the Notes to Condensed Consolidated Financial Statements.

In July 2013, the FASB issued Accounting Standards Update No. 2013-11 “Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists” (ASU 2013-11), which is included in ASC Topic 740 (Income Taxes). ASU 2013-11 requires an entity to net its liability for unrecognized tax positions against a net operating loss carryforward, a similar tax loss or a tax credit carryforward when settlement in this manner is available under the tax law. The provisions of this new guidance are effective for reporting periods beginning after December 15, 2013. We are currently evaluating the impact of the new guidance on our financial statements.

Inventories (Tables)

9 Months Ended

Sep. 28, 2013

Disclosure Inventories [Abstract]

Components of Inventories

The components of inventories consist of the following:

	September 28, 2013		December 29, 2012
Raw materials	$	136,923	$	119,142
Work-in-process		52,894		53,656
Finished goods		256,996		243,238
Inventory reserves		(30,088)		(26,105)
Inventory, net of reserves	$	416,725	$	389,931

Earnings Per Share (Tables)

9 Months Ended

Sep. 28, 2013

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Income Per Share

The following table sets forth the computation of basic and diluted net income per share:

	13-Weeks Ended
	Sept 28,		Sept 29,
	2013		2012
Numerator:
Numerator for basic and diluted net income per share - net income	$	187,669	$	140,348

Denominator:
Denominator for basic net income per share – weighted-average common shares		195,325		194,912

Effect of dilutive securities – stock options, stock appreciation rights and restricted stock units		975		1,249

Denominator for diluted net income per share – adjusted weighted-average common shares		196,300		196,161

Basic net income per share	$	0.96	$	0.72

Diluted net income per share	$	0.96	$	0.72

	39-Weeks Ended
	Sept 28,		Sept 29,
	2013		2012
Numerator:
Numerator for basic and diluted net income per share - net income	$	448,827	$	413,109

Denominator:
Denominator for basic net income per share – weighted-average common shares		195,488		194,834

Effect of dilutive securities – stock options, stock appreciation rights and restricted stock units		824		1,337

Denominator for diluted net income per share – adjusted weighted-average common shares		196,312		196,171

Basic net income per share	$	2.30	$	2.12

Diluted net income per share	$	2.29	$	2.11

Segment Information (Tables)

9 Months Ended

Sep. 28, 2013

Segment Reporting [Abstract]

Net Sales Operating Income and Income Before Taxes for Reportable Segments

Net sales, operating income, and income before taxes for each of the Company’s reportable segments are presented below:

	Reportable Segments
							Auto/
	Outdoor		Fitness		Marine		Mobile		Aviation		Total
13-Weeks Ended September 28, 2013

Net sales	$	101,350	$	81,007	$	55,301	$	322,520	$	83,459	$	643,637
Operating income	$	44,107	$	26,493	$	4,118	$	53,848	$	23,183	$	151,749
Income before taxes	$	45,556	$	27,938	$	4,347	$	58,144	$	24,815	$	160,800

13-Weeks Ended September 29, 2012

Net sales	$	105,572	$	64,788	$	44,766	$	384,393	$	72,857	$	672,376
Operating income	$	48,384	$	21,219	$	8,378	$	65,165	$	16,916	$	160,062
Income before taxes	$	48,953	$	21,853	$	8,705	$	65,399	$	17,717	$	162,627

39-Weeks Ended September 28, 2013

Net sales	$	284,372	$	237,660	$	178,344	$	919,810	$	251,970	$	1,872,156
Operating income	$	110,538	$	76,026	$	16,089	$	134,324	$	64,584	$	401,561
Income before taxes	$	117,996	$	81,186	$	20,828	$	160,803	$	68,206	$	449,019

39-Weeks Ended September 29, 2012

Net sales	$	283,230	$	217,815	$	168,620	$	1,055,786	$	221,676	$	1,947,127
Operating income	$	118,032	$	76,016	$	35,584	$	170,208	$	54,561	$	454,401
Income before taxes	$	119,971	$	77,916	$	36,596	$	178,978	$	56,158	$	469,619

Net Sales and Property and Equipment Net by Geographic Area

	Americas		APAC		EMEA		Total
September 28, 2013
Net sales to external customers	$	1,002,796	$	176,524	$	692,836	$	1,872,156
Property and equipment, net	$	235,520	$	123,763	$	54,392	$	413,675

September 29, 2012
Net sales to external customers	$	1,068,289	$	186,165	$	692,673	$	1,947,127
Property and equipment, net	$	221,085	$	135,227	$	51,541	$	407,853

Warranty Reserves (Tables)

9 Months Ended

Sep. 28, 2013

Product Warranties Disclosures [Abstract]

Changes in Aggregate Warranty Reserve

The following reconciliation provides an illustration of changes in the aggregate warranty reserve.

	13-Weeks Ended
	Sept 28,		Sept 29,
	2013		2012
Balance - beginning of the period	$	34,288	$	40,797
Accrual for products sold		10,884		9,009
Expenditures		(10,533)		(10,659)
Balance - end of the period	$	34,639	$	39,147

	39-Weeks Ended
	Sept 28,		Sept 29,
	2013		2012
Balance - beginning of the period	$	37,301	$	46,773
Accrual for products sold		29,076		24,863
Expenditures		(31,738)		(32,489)
Balance - end of the period	$	34,639	$	39,147

Marketable Securities (Tables)

9 Months Ended

Sep. 28, 2013

Investments, Debt and Equity Securities [Abstract]

Available For Sale Securities Measured At Estimated Fair Value On Recurring Basis

Available for sale securities measured at estimated fair value on a recurring basis are summarized below:

	Fair Value Measurements as of September 28, 2013
Description	Total		Level 1		Level 2		Level 3

Mortgage-backed securities	$	518,840	$	-	$	518,840	$	-
Obligations of states and political subdivisions		690,615		-		690,615		-
Corporate bonds		420,345		-		420,345		-
Common stocks		27,435		27,435		-		-
Other		71,162		-		71,162		-
Total	$	1,728,397	$	27,435	$	1,700,962	$	-

	Fair Value Measurements as
	of December 29, 2012
Description	Total		Level 1		Level 2		Level 3

Mortgage-backed securities	$	650,895	$	-	$	650,895	$	-
Obligations of states and political subdivisions		499,857		-		499,857		-
Corporate bonds		399,941		-		399,941		-
Common stocks		22,982		22,982		-		-
Other		67,720		-		67,720		-
Total	$	1,641,395	$	22,982	$	1,618,413	$	-

Marketable Securities Classified as Available-For-Sale Securities

The following is a summary of the Company’s marketable securities classified as available-for-sale securities at September 28, 2013:

									Estimated Fair
					Gross		Other Than		Value (Net
			Gross Unrealized		Unrealized		Temporary		Carrying
	Amortized Cost		Gains		Losses		Impairment		Amount)
Mortgage-backed securities	$	534,722	$	4,386	$	(20,268)	$	-	$	518,840
Obligations of states and political subdivisions		711,989		1,649		(23,023)		-		690,615
U.S. corporate bonds		424,439		1,658		(4,478)		(1,274)		420,345
Common stocks		23,795		3,975		(335)		-		27,435
Other		67,914		3,335		(87)		-		71,162
Total	$	1,762,859	$	15,003	$	(48,191)	$	(1,274)	$	1,728,397

The following is a summary of the Company’s marketable securities classified as available-for-sale securities at December 29, 2012:

									Estimated Fair
					Gross		Other Than		Value (Net
			Gross Unrealized		Unrealized		Temporary		Carrying
	Amortized Cost		Gains		Losses		Impairment		Amount)
Mortgage-backed securities	$	644,388	$	8,894	$	(2,387)	$	-	$	650,895
Obligations of states and political subdivisions		499,241		2,345		(1,729)		-		499,857
U.S. corporate bonds		400,310		3,138		(2,233)		(1,274)		399,941
Common stocks		21,113		2,392		(523)		-		22,982
Other		67,181		551		(12)		-		67,720
Total	$	1,632,233	$	17,320	$	(6,884)	$	(1,274)	$	1,641,395

Amortized Cost and Estimated Fair Value of Marketable Securities, by Contractual Maturity

	Cost		Estimated Fair Value
Due in one year or less	$	136,835	$	134,253
Due after one year through five years		688,846		686,299
Due after five years through ten years		257,244		249,112
Due after ten years		621,050		592,932
Other (No contractual maturity dates)		58,884		65,801
	$	1,762,859	$	1,728,397

Accumulated Other Comprehensive Income (Tables)

9 Months Ended

Sep. 28, 2013

Accumulated Other Comprehensive Income [Abstract]

Changes in Accumulated Other Comprehensive Income

The following provides required disclosure of changes in accumulated other comprehensive income (AOCI) balances by component for the 13-week and 39-week periods ended September 28, 2013:

	13-Weeks Ended Sept 28, 2013
	Foreign Currency Translation Adjustment		Unrealized Gains (Losses) on Available for Sale Securities		Total
Balance - beginning of period	$	91,416	$	(26,573)	$	64,843
Other comprehensive income before reclassification		13,379		(6,336)		7,043
Amounts reclassified from accumulated other comprehensive income		-		(105)		(105)
Net current-period other comprehensive income		13,379		(6,441)		6,938
Balance - end of period	$	104,795	$	(33,014)	$	71,781

	39-Weeks Ended Sept 28, 2013
	Foreign Currency Translation Adjustment		Unrealized Gains (Losses) on Available for Sale Securities		Total
Balance - beginning of period	$	128,972	$	9,582	$	138,554
Other comprehensive income before reclassification		(24,177)		(39,810)		(63,987)
Amounts reclassified from accumulated other comprehensive income		-		(2,786)		(2,786)
Net current-period other comprehensive income		(24,177)		(42,596)		(66,773)
Balance - end of period	$	104,795	$	(33,014)	$	71,781

Reclassifications out of AOCI

The following provides required disclosure of reporting reclassifications out of AOCI for the 13-week and 39-week periods ended September 28, 2013:

13-Weeks Ended Sept 28, 2013
Details about Accumulated Other Comprehensive Income Components		Amount Reclassified from Accumulated Other Comprehensive Income	Affected Line Item in the Statement Where Net Income is Presented
Unrealized gains (losses) on available-for-sale securities	$	137	Other income (expense)
		(32)	Income tax provision
	$	105	Net of tax

39-Weeks Ended Sept 28, 2013
Details about Accumulated Other Comprehensive Income Components	Amount Reclassified from Accumulated Other Comprehensive Income		Affected Line Item in the Statement Where Net Income is Presented
Unrealized gains (losses) on available-for-sale securities	$	2,963	Other income (expense)
		(177)	Income tax provision
	$	2,786	Net of tax

Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2013	Dec. 29, 2012
Schedule of Inventory [Line Items]
Raw materials	$ 136,923	$ 119,142
Work-in-process	52,894	53,656
Finished goods	256,996	243,238
Inventory reserves	(30,088)	(26,105)
Inventory, net of reserves	$ 416,725	$ 389,931

Earnings Per Share (Computation of Basic and Diluted Net Income Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Numerator:
Numerator for basic and diluted net income per share - net income	$ 187,669	$ 140,348	$ 448,827	$ 413,109
Denominator:
Denominator for basic net income per share - weighted-average common shares	195,325	194,912	195,488	194,834
Effect of dilutive securities - stock options, stock appreciation rights and restricted stock units	975	1,249	824	1,337
Denominator for diluted net income per share - adjusted weighted-average common shares	196,300	196,161	196,312	196,171
Basic net income per share	$ 0.96	$ 0.72	$ 2.30	$ 2.12
Diluted net income per share	$ 0.96	$ 0.72	$ 2.29	$ 2.11

Earnings Per Share (Additional Information) (Details)	3 Months Ended		9 Months Ended
Earnings Per Share (Additional Information) (Details)	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive stock options, stock appreciation rights and restricted stock units	5,443,047	5,599,936	5,507,363	5,667,000
Shares issued as a result of exercises of equity awards	233,703	94,668	344,254	307,386

Segment Information (Net Sales Operating Income and Income Before Taxes for Reportable Segments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Segment Reporting Information [Line Items]
Net sales	$ 643,637	$ 672,376	$ 1,872,156	$ 1,947,127
Operating income	151,749	160,062	401,561	454,401
Income before taxes	160,800	162,627	449,019	469,619
Outdoor [Member]
Segment Reporting Information [Line Items]
Net sales	101,350	105,572	284,372	283,230
Operating income	44,107	48,384	110,538	118,032
Income before taxes	45,556	48,953	117,996	119,971
Fitness [Member]
Segment Reporting Information [Line Items]
Net sales	81,007	64,788	237,660	217,815
Operating income	26,493	21,219	76,026	76,016
Income before taxes	27,938	21,853	81,186	77,916
Marine [Member]
Segment Reporting Information [Line Items]
Net sales	55,301	44,766	178,344	168,620
Operating income	4,118	8,378	16,089	35,584
Income before taxes	4,347	8,705	20,828	36,596
Auto/Mobile [Member]
Segment Reporting Information [Line Items]
Net sales	322,520	384,393	919,810	1,055,786
Operating income	53,848	65,165	134,324	170,208
Income before taxes	58,144	65,399	160,803	178,978
Aviation [Member]
Segment Reporting Information [Line Items]
Net sales	83,459	72,857	251,970	221,676
Operating income	23,183	16,916	64,584	54,561
Income before taxes	$ 24,815	$ 17,717	$ 68,206	$ 56,158

Segment Information (Net Sales and Property and Equipment Net by Geographic Area) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Dec. 29, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales to external customers	$ 643,637	$ 672,376	$ 1,872,156	$ 1,947,127
Property and equipment, net	413,675	407,853	413,675	407,853	409,751
Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales to external customers			1,002,796	1,068,289
Property and equipment, net	235,520	221,085	235,520	221,085
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales to external customers			176,524	186,165
Property and equipment, net	123,763	135,227	123,763	135,227
Europe, Middle East and Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales to external customers			692,836	692,673
Property and equipment, net	$ 54,392	$ 51,541	$ 54,392	$ 51,541

Warranty Reserves (Changes in Aggregate Warranty Reserve) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Product Liability Contingency [Line Items]
Balance - beginning of the period	$ 34,288	$ 40,797	$ 37,301	$ 46,773
Accrual for products sold	10,884	9,009	29,076	24,863
Expenditures	(10,533)	(10,659)	(31,738)	(32,489)
Balance - end of the period	$ 34,639	$ 39,147	$ 34,639	$ 39,147

Commitments and Contingencies (Additional Information) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 28, 2013
Long-term Purchase Commitment [Line Items]
Commitments to make purchases, amount committed	$ 213,173
Commitments to make purchases, time period	5 years
Short Term Interest Free Loan Payable	173,708
Number Of Installments For Short Term Loan Payable	7
Number Of Installments To Be Received For Loan and Advance	5
Payments for Advance to Affiliate	$ 173,708

Income Taxes (Additional Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Mar. 30, 2013
Income Taxes [Line Items]
Decrease in earnings before taxes compared to same period in 2012	1.10%		4.40%
Decrease in income tax expense	$ 49,148		$ 56,318
Income tax provision	(26,869)	22,279	192	56,510
Effective tax rate	15.70%	13.70%	15.30%	12.00%
Liability for Uncertain Tax Positions, Current	52,180		52,180		16,536
Income Tax Reconciliation, Tax Credits, Research			6,301
Other Uncertain Tax Position Reserves	$ 401	$ 1,737	$ 9,556	$ 11,945

Marketable Securities (Available for Sale Securities Measured at Estimated Fair Value on Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2013	Dec. 29, 2012
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	$ 1,728,397	$ 1,641,395
Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	1,728,397	1,641,395
Fair Value, Measurements, Recurring [Member] \| Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	518,840	650,895
Fair Value, Measurements, Recurring [Member] \| Obligations of States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	690,615	499,857
Fair Value, Measurements, Recurring [Member] \| Corporate Bond Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	420,345	399,941
Fair Value, Measurements, Recurring [Member] \| Common Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	27,435	22,982
Fair Value, Measurements, Recurring [Member] \| Other securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	71,162	67,720
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	27,435	22,982
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	0	0
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Obligations of States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	0	0
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Corporate Bond Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	0	0
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Common Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	27,435	22,982
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Other securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	0	0
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	1,700,962	1,618,413
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	518,840	650,895
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Obligations of States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	690,615	499,857
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Corporate Bond Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	420,345	399,941
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Common Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	0	0
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Other securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Total	$ 71,162	$ 67,720

Marketable Securities (Classified as Available-For-Sale Securities) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 28, 2013	Dec. 29, 2012
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 1,762,859	$ 1,632,233
Gross Unrealized Gains	15,003	17,320
Gross Unrealized Losses	(48,191)	(6,884)
Other Than Temporary Impairment	(1,274)	(1,274)
Estimated Fair Value (Net Carrying Amount)	1,728,397	1,641,395
Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	534,722	644,388
Gross Unrealized Gains	4,386	8,894
Gross Unrealized Losses	(20,268)	(2,387)
Other Than Temporary Impairment	0	0
Estimated Fair Value (Net Carrying Amount)	518,840	650,895
Obligations of States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	711,989	499,241
Gross Unrealized Gains	1,649	2,345
Gross Unrealized Losses	(23,023)	(1,729)
Other Than Temporary Impairment	0	0
Estimated Fair Value (Net Carrying Amount)	690,615	499,857
U.S. Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	424,439	400,310
Gross Unrealized Gains	1,658	3,138
Gross Unrealized Losses	(4,478)	(2,233)
Other Than Temporary Impairment	(1,274)	(1,274)
Estimated Fair Value (Net Carrying Amount)	420,345	399,941
Common Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	23,795	21,113
Gross Unrealized Gains	3,975	2,392
Gross Unrealized Losses	(335)	(523)
Other Than Temporary Impairment	0	0
Estimated Fair Value (Net Carrying Amount)	27,435	22,982
Other [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	67,914	67,181
Gross Unrealized Gains	3,335	551
Gross Unrealized Losses	(87)	(12)
Other Than Temporary Impairment	0	0
Estimated Fair Value (Net Carrying Amount)	$ 71,162	$ 67,720

Marketable Securities (Amortized Cost and Estimated Fair Value of Marketable Securities by Contractual Maturity) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2013	Dec. 29, 2012
Cost
Due in one year or less	$ 136,835
Due after one year through five years	688,846
Due after five years through ten years	257,244
Due after ten years	621,050
Other (No contractual maturity dates)	58,884
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Total	1,762,859
Estimated Fair Value
Due in one year or less	134,253
Due after one year through five years	686,299
Due after five years through ten years	249,112
Due after ten years	592,932
Other (No contractual maturity dates)	65,801
Estimated Fair Value (Net Carrying Amount)	$ 1,728,397	$ 1,641,395

Marketable Securities (Additional information) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 28, 2013	Dec. 29, 2012
Gross Unrealized Losses	$ (48,191)	$ (6,884)
Change In Treasury Bond Yield Description	The decline was due to increases in the 10 Year Treasury Bond Yield during the second and third quarters, which caused market valuations of certain securities in our investment portfolios to decline.
Held To Maturity Securities Continuous Unrealized Loss Position Percentage	47.00%
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	1,116,862
Available For Sale Securities Continuous Unrealized Loss Position Amortization Cost	$ 1,165,053

Share Repurchase Plan (Additional information) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	9 Months Ended
	Feb. 15, 2013	Sep. 28, 2013
Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount	$ 300,000
Share repurchase program, shares repurchased		713,092
Share repurchase program, shares repurchased value		26,926
Stock Repurchase Program, Remaining Authorized Repurchase Amount		$ 273,074

Accumulated Other Comprehensive Income (Changes in Accumulated Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Foreign Currency Translation Adjustment
Balance - beginning of period	$ 91,416		$ 128,972
Other comprehensive income before reclassification	13,379	22,591	(24,177)	31,881
Amounts reclassified from accumulated other comprehensive income	0		0
Net current-period other comprehensive income	13,379		(24,177)
Balance - end of period	104,795		104,795
Unrealized Gains (Losses) on Available for Sale Securities
Balance - beginning of period	(26,573)		9,582
Other comprehensive income before reclassification	(6,336)		(39,810)
Amounts reclassified from accumulated other comprehensive income	(105)		(2,786)
Net current-period other comprehensive income	(6,441)		(42,596)
Balance - end of period	(33,014)		(33,014)
Total
Balance - beginning of period	64,843		138,554
Other comprehensive income before reclassification	7,043		(63,987)
Amounts reclassified from accumulated other comprehensive income	(105)		(2,786)
Net current-period other comprehensive income	6,938		(66,773)
Balance - end of period	$ 71,781		$ 71,781

Accumulated Other Comprehensive Income (Reclassifications Out of AOCI) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Other income (expense)	$ 9,051	$ 2,565	$ 47,458	$ 15,218
Income tax provision	26,869	(22,279)	(192)	(56,510)
Unrealized Gains (Losses) On Available-For-Sale Securities [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Other income (expense)	137		2,963
Income tax provision	(32)		(177)
Net of tax	$ 105		$ 2,786

License Fees (Additional Information) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 28, 2013
License Fees [Line Items]
Net overpayment of license fees	$ 20.8