Investments and Fair Value Measurements-Fin Assets and Liabilities 2 (Details 3) (USD $) In Thousands, unless otherwise specified	Dec. 30, 2012		Jan. 01, 2012
Financial assets measured at fair value on a recurring basis
Short-term marketable securities	$ 1,880,034		$ 1,681,492
Long-term marketable securities	2,835,931		2,766,263
Total financial assets	5,548,126		5,454,454
Financial Liabilities measured at fair value on a recurring basis
Total financial liabilities	13,584		45,835
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets measured at fair value on a recurring basis
Total financial assets	610,129		1,115,931
Financial Liabilities measured at fair value on a recurring basis
Total financial liabilities	0		0
Significant Other Observable Inputs (Level 2) [Member]
Financial assets measured at fair value on a recurring basis
Total financial assets	4,937,997		4,338,523
Financial Liabilities measured at fair value on a recurring basis
Total financial liabilities	13,584		45,835
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]
Financial Liabilities measured at fair value on a recurring basis
Other current accrued liabilities	13,584		40,045
Other Current Accued Liabilities [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	0		0
Other Current Accued Liabilities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial Liabilities measured at fair value on a recurring basis
Other current accrued liabilities	13,584		40,045
Other Current Accued Liabilities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial Liabilities measured at fair value on a recurring basis
Other current accrued liabilities	0		0
Non-current liabilities [Member]
Financial Liabilities measured at fair value on a recurring basis
Non-current liabilities	0		5,790
Non-current liabilities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial Liabilities measured at fair value on a recurring basis
Non-current liabilities	0		0
Non-current liabilities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial Liabilities measured at fair value on a recurring basis
Non-current liabilities	0		5,790
Non-current liabilities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial Liabilities measured at fair value on a recurring basis
Non-current liabilities	0		0
Cash Equivalents [Member]
Financial assets measured at fair value on a recurring basis
Cash equivalents	812,103	[1]	981,105	[1]
Cash Equivalents [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets measured at fair value on a recurring basis
Cash equivalents	582,743	[1]	926,994	[1]
Cash Equivalents [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets measured at fair value on a recurring basis
Cash equivalents	229,360	[1]	54,111	[1]
Cash Equivalents [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]
Financial assets measured at fair value on a recurring basis
Short-term marketable securities	1,880,034		1,681,492
Short-term marketable securities [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	16,589		155,538
Short-term marketable securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets measured at fair value on a recurring basis
Short-term marketable securities	1,863,445		1,525,954
Short-term marketable securities [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]
Financial assets measured at fair value on a recurring basis
Long-term marketable securities	2,835,931		2,766,263
Long term Marketable Securities [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	10,797		33,399
Long term Marketable Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets measured at fair value on a recurring basis
Long-term marketable securities	2,825,134		2,732,864
Long term Marketable Securities [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 and Non-Current Assets [Member]
Financial assets measured at fair value on a recurring basis
Other current assets and other non-current assets	20,058		25,594
Other Current and Non-Current Assets [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 and other non-current assets	0		0
Other Current and Non-Current Assets [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets measured at fair value on a recurring basis
Other current assets and other non-current assets	20,058		25,594
Other Current and Non-Current Assets [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets measured at fair value on a recurring basis
Other current assets and other non-current assets	$ 0		$ 0

[1] Cash equivalents exclude cash of $183.4 million and $186.4 million included in Cash and cash equivalents on the Consolidated Balance Sheets as of December 30, 2012 and January 1, 2012, respectively.