Investments and Fair Value Measurements-Fin Assets and Liabilities 2 (Details 3) (USD $)	Mar. 30, 2014		Dec. 29, 2013
Financial assets measured at fair value on a recurring basis
Short-term marketable securities	$ 1,692,801,000		$ 1,919,611,000
Long-term marketable securities	3,508,081,000		3,179,471,000
Other current assets	177,532,000		166,885,000
Other current assets and other non-current assets	95,330,000		167,430,000
Significant Unobservable Inputs (Level 3) [Member]
Financial assets measured at fair value on a recurring basis
Total financial assets	0		0
Financial Liabilities measured at fair value on a recurring basis
Total financial liabilities	0		0
Fair Value, Measurements, Recurring [Member]
Financial assets measured at fair value on a recurring basis
Total financial assets	6,135,149,000		5,906,393,000
Financial Liabilities measured at fair value on a recurring basis
Total financial liabilities	17,129,000		45,859,000
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets measured at fair value on a recurring basis
Total financial assets	1,027,165,000		920,557,000
Financial Liabilities measured at fair value on a recurring basis
Total financial liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets measured at fair value on a recurring basis
Total financial assets	5,107,984,000		4,985,836,000
Financial Liabilities measured at fair value on a recurring basis
Total financial liabilities	17,129,000		45,859,000
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets measured at fair value on a recurring basis
Total financial assets	0		0
Financial Liabilities measured at fair value on a recurring basis
Total financial liabilities	0		0
Other Current Accued Liabilities [Member] | Fair Value, Measurements, Recurring [Member]
Financial Liabilities measured at fair value on a recurring basis
Other Current Accrued Liabilities, Fair Value Disclosure	17,129,000		45,741,000
Other Current Accued Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial Liabilities measured at fair value on a recurring basis
Other Current Accrued Liabilities, Fair Value Disclosure	0		0
Other Current Accued Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial Liabilities measured at fair value on a recurring basis
Other Current Accrued Liabilities, Fair Value Disclosure	17,129,000		45,741,000
Other Current Accued Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial Liabilities measured at fair value on a recurring basis
Other Current Accrued Liabilities, Fair Value Disclosure	0		0
Non-current Liabilities [Member] | Fair Value, Measurements, Recurring [Member]
Financial Liabilities measured at fair value on a recurring basis
Other liabilities, Fair Value Disclosure	0		118,000
Non-current Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial Liabilities measured at fair value on a recurring basis
Other liabilities, Fair Value Disclosure	0		0
Non-current Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial Liabilities measured at fair value on a recurring basis
Other liabilities, Fair Value Disclosure	0		118,000
Non-current Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial Liabilities measured at fair value on a recurring basis
Other liabilities, Fair Value Disclosure	0		0
Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member]
Financial assets measured at fair value on a recurring basis
Cash equivalents	934,242,000	[1]	806,534,000	[1]
Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets measured at fair value on a recurring basis
Cash equivalents	884,279,000	[1]	773,435,000	[1]
Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets measured at fair value on a recurring basis
Cash equivalents	49,963,000	[1]	33,099,000	[1]
Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets measured at fair value on a recurring basis
Cash equivalents	0	[1]	0	[1]
Short-term marketable securities [Member] | Fair Value, Measurements, Recurring [Member]
Financial assets measured at fair value on a recurring basis
Short-term marketable securities	1,692,801,000		1,919,611,000
Short-term marketable securities [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets measured at fair value on a recurring basis
Short-term marketable securities	22,093,000		15,090,000
Short-term marketable securities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets measured at fair value on a recurring basis
Short-term marketable securities	1,670,708,000		1,904,521,000
Short-term marketable securities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets measured at fair value on a recurring basis
Short-term marketable securities	0		0
Long term Marketable Securities [Member] | Fair Value, Measurements, Recurring [Member]
Financial assets measured at fair value on a recurring basis
Long-term marketable securities	3,508,081,000		3,179,471,000
Long term Marketable Securities [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets measured at fair value on a recurring basis
Long-term marketable securities	120,793,000		132,032,000
Long term Marketable Securities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets measured at fair value on a recurring basis
Long-term marketable securities	3,387,288,000		3,047,439,000
Long term Marketable Securities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets measured at fair value on a recurring basis
Long-term marketable securities	0		0
Other Current Assets [Member] | Fair Value, Measurements, Recurring [Member]
Financial assets measured at fair value on a recurring basis
Other current assets	25,000		777,000
Other Current Assets [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets measured at fair value on a recurring basis
Other current assets	0		0
Other Current Assets [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets measured at fair value on a recurring basis
Other current assets	25,000		777,000
Other Current Assets [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets measured at fair value on a recurring basis
Other current assets	$ 0		$ 0

[1] Cash equivalents exclude cash of $182.7 million and $179.7 million included in Cash and cash equivalents on the Condensed Consolidated Balance Sheets as of March 30, 2014 and December 29, 2013, respectively.