Financing Arrangements (Details) (USD $)			3 Months Ended		6 Months Ended				3 Months Ended	6 Months Ended
	Jul. 03, 2011	Jan. 02, 2011	Jul. 03, 2011 1% Sr. Convertible Notes due 2013 [Member]	Jul. 04, 2010 1% Sr. Convertible Notes due 2013 [Member]	Jul. 03, 2011 1% Sr. Convertible Notes due 2013 [Member]	Jul. 04, 2010 1% Sr. Convertible Notes due 2013 [Member]	Jan. 02, 2011 1% Sr. Convertible Notes due 2013 [Member]	May 31, 2006 1% Sr. Convertible Notes due 2013 [Member]	Jul. 03, 2011 1.5% Sr. Convertible Notes due 2017 [Member]	Jul. 03, 2011 1.5% Sr. Convertible Notes due 2017 [Member]	Jan. 02, 2011 1.5% Sr. Convertible Notes due 2017 [Member]	Aug. 31, 2010 1.5% Sr. Convertible Notes due 2017 [Member]
Carrying value of the convertible debt
1% and 1.5% Notes due 2013 and 2017			$ 1,150,000,000		$ 1,150,000,000		$ 1,150,000,000	$ 1,150,000,000	$ 1,000,000,000	$ 1,000,000,000	$ 1,000,000,000	$ 1,000,000,000
Less: Unamortized interest discount			(125,900,000)		(125,900,000)		(156,800,000)		(264,900,000)	(264,900,000)	(282,200,000)
Carrying Value	1,759,217,000	1,711,032,000	1,024,073,000		1,024,073,000		993,199,000		735,144,000	735,144,000	717,833,000
Interest cost recognized for Convertible notes
Contractual interest coupon			2,900,000	2,900,000	5,800,000	5,800,000			3,700,000	7,500,000
Amortization of bond issuance costs			900,000	900,000	1,700,000	1,700,000			700,000	1,400,000
Amortization of bond discount			15,300,000	14,200,000	30,300,000	28,100,000			8,500,000	16,900,000
Total interest cost recognized			$ 19,100,000	$ 18,000,000	$ 37,800,000	$ 35,600,000			$ 12,900,000	$ 25,800,000