Investments (Details) - USD ($) $ in Thousands	Jul. 04, 2015	Jan. 03, 2015
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	$ 625,361	$ 1,319,899
Gross Unrealized Gains	154	96
Gross Unrealized Losses	(375)	(603)
Fair Value	625,140	1,319,392
Cash equivalents [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	78,616	314,764
Fair Value	78,616	314,764
Cash equivalents [Member] | Money market funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	67,104	189,137
Fair Value	67,104	189,137
Cash equivalents [Member] | Time deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	9,412	9,989
Fair Value	9,412	9,989
Cash equivalents [Member] | Commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost		115,638
Fair Value		115,638
Cash equivalents [Member] | Government and corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	2,100
Fair Value	2,100
Short-term investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	264,032	785,696
Gross Unrealized Gains	75	70
Gross Unrealized Losses	(33)	(103)
Fair Value	264,074	785,663
Short-term investments [Member] | Time deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	51,230	52,830
Gross Unrealized Losses		(1)
Fair Value	51,230	52,829
Short-term investments [Member] | Commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	4,600	435,555
Gross Unrealized Gains		1
Gross Unrealized Losses		(12)
Fair Value	4,600	435,544
Short-term investments [Member] | Government and corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	208,202	297,311
Gross Unrealized Gains	75	69
Gross Unrealized Losses	(33)	(90)
Fair Value	208,244	297,290
Long-term investments [Member] | Government and corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	282,713	219,439
Gross Unrealized Gains	79	26
Gross Unrealized Losses	(342)	(500)
Fair Value	$ 282,450	$ 218,965