Investments and Fair Value Measurements-Fin Assets and Liabilities 2 (Details 3) (USD $)	Jun. 29, 2014		Dec. 29, 2013
Financial assets measured at fair value on a recurring basis
Short-term marketable securities	$ 1,794,356,000		$ 1,919,611,000
Long-term marketable securities	3,569,453,000		3,179,471,000
Other current assets	277,951,000		166,885,000
Other current assets and other non-current assets	95,474,000		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	6,087,965,000		5,906,393,000
Financial Liabilities measured at fair value on a recurring basis
Total financial liabilities	7,358,000		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	826,689,000		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	5,261,276,000		4,985,836,000
Financial Liabilities measured at fair value on a recurring basis
Total financial liabilities	7,358,000		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	7,358,000		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	7,358,000		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	722,416,000	[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	703,084,000	[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	19,332,000	[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	1,794,356,000		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	7,005,000		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	1,787,351,000		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	3,569,453,000		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	116,600,000		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	3,452,853,000		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	1,740,000		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	1,740,000		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 holdings of $162.7 million and $179.7 million included in Cash and cash equivalents on the Condensed Consolidated Balance Sheets as of June 29, 2014 and December 29, 2013, respectively.